DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 1 PHAN 1 KIEN TRUC (5%) DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 2 CHUONG ITONG QUAN KIEN TRUC CONG TRNH I.1. NHU CAU XAY DUNG CONG TRNH: Trong nhung nam gan day, muc do do thi hoa nhanh,muc song nguoi dan ngay cang cao keo theo nhu cau ve an o,sinh hoat,ngh ngoi cung tang len khong ngung doi hoi mot khong gian song tot hon va tien nghi hon. V vay viec hnh thanh cac chung cu cao tang khong nhung dap ung ve nhu cau ha tang ma con gop phan tao nen bo mat canh quan do thi moi cua thanh pho tuong xung voi tam voc cua mot dat nuoc dang tren da phat trien.Chnh v the CHUNG CU CAO CAP BNH THANH ra doi va do la mot du an thiet thuc,kha thi. I.2. DIA DIEM XAY DUNG CONG TRNH: -Toa lac quan Tan Bnh, cong trnh nam o vi tr thoang dep, cong trnh da tao nen duoc diem nhan ve kien truc dong thoi tao nen su hai hoa hop ly va hien dai cho tong the quy hoach khu vuc dan cu. -Cong trnh nam tren truc chnh giao thong nen rat thuan tien cho viec cung cap vat tu va giao thong ngoai cong truong. -He thong dien, nuoc ben trong cong trnh da duoc cung cap day du, dap ung duoc nhu cau ve nguon nang luong cho cong tac xay dung. -Khu dat xay dung tren mat bang bang phang, hien trang khong co cong trnh cu, xung quanh la nha dan nhung da duoc dung rao an toan, ben duoi khong co cong trnh ngam nen rat thuan tien cho viec thi cong va lap tong bnh do xay dung. I.3. GIAI PHAP KIEN TRUC: I.3.1. MAT BANG VA PHAN KHU CHUC NANG: Mat bang cong trnh hnh chu nhat , chieu dai la 26m, chieu rong la 21.6m chiem dien tch xay dung la 561.6 m2. Cong trnh gom 2 tang ham + 1 tret + 15 tang lau. Cot 0.000 duoc duoc dat tai mat san tang tret. Mat dat tu nhien tai cot - 1.200m. Chieu cao cong trnh la 57m tnh tu san tang tret den nap ho nuoc mai. Thang may va thang bo duoc bo tr ngay giua cong trnh. Cac he thong ky thuat nhu be chua nuoc sinh hoat, tram bom, tram xu ly nuoc thai duoc bo tr hop ly nham lam giam chieu dai ong dan.Tang tret :Gom sanh don,nha bep,nha tre,nha tang le,phong sinh hoat cong dong va cac phong ban quan tri cao oc. Tang 1-14:Bo tr cac can ho dung de cho thue ngan han,dai han hoac nhu cau o.Tai moi tang co 2 ban cong lon phuc vu nhu cau hong mat,ngam canh giai tr cho dan cu cua ca cao oc. San thuong:Bo tr cac phong k thuat,may moc va cac thiet bi ve sinh. DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 3 Tren cung co ho nuoc mai cung cap nuoc cho toan chung cu va he thong thu loi chong set cho chung cu. Nhn chung giai phap mat bang rat don gian, tao khong gian rong lon de bo tr cac can ho ben trong va su dung vat lieu nhe de ngan chia khong gian ben tren mat bang phu hop voi xu huong cua van phong cho thue va de dang thay doi trong tuong lai. I.3.2. MAT DUNG: Su dung va khai thac tnh hien dai voi nhung tam knh lon. Tuong ngoai duoc hoan thien bang son nuoc. I.3.3. HE THONG GIAO THONG: Giao thong ngang trong moi don nguyen la he thong hanh lang. He thong giao thong dung la thang bo va thang may, bao gom 01 thang bo, 01 thang may. Thang may va thang bo duocbo tr o chnh giua nha, ben canh la nha ve sinh chung. Phan dien tch con lai duoc ngan nho cho thue. Do thang may va thang bo duoc bo tr o chnh giua nha nen viec giao thong giua cac phong rat thuan tien. I.4. GIAI PHAP KY THUAT: I.4.1. HE THONG DIEN: -He thong tiep nhan dien tu he thong dien chung cua khu do thi vao nha thong qua phong may dien. Tu day dien duoc dan di khap cong trnh thong qua mang luoi dien noi bo. -Ngoai ra khi bi su co mat dien co the dung ngay may phat dien du phong dat o tang ngam de phat. I.4.2. HE THONG NUOC: -Nguon nuoc duoc lay tu he thong cap nuoc khu vuc va dan vao be chua nuoc o tang ham roi bang he bom nuoc tu dong nuoc duoc bom den tung phong thong qua he thong gen chnh o gan phong phuc vu. -Giai phap ket cau san la san khong dam, khong co mu cot, ch dong tran o khu vuc san ve sinh ma khong dong tran o cac phong sinh hoat va hanh lang nham giam thieu chieu cao tang nen he thong ong dan nuoc ngang va dung duoc nghien cuu va giai quyet ket hop voi viec bo tr phong oc trong can ho that hai hoa. -Sau khi xu ly, nuoc thai duoc day vao he thong thoat nuoc chung cua khu vuc. I.4.3. THONG GIO CHIEU SANG: Bon mat cua cong trnh deu co bancol thong gio chieu sang cho cac phong. Ngoai ra con bo tr may dieu hoa o cac phong. I.4.4. PHONG CHAY THOAT HIEM: Cong trnh BTCT bo tr tuong ngan bang gach rong vua cach am vua cach nhiet. Doc hanh lang bo tr cac hop chong chay bang cac bnh kh CO2. Cac tang lau deu co 3 cau thang du dam bao thoat nguoi khi co su co ve chay no. Ben canh do tren dnh mai con co be nuoc lon phong chay chua chay. DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 4 I.4.5. CHONG SET: Chon su dung he thong thu set chu dong qua cau Dynasphere duoc thiet lap o tang mai va he thong day noi dat bang dong duoc thiet ke de toi thieu hoa nguy co bi set danh. I.4.6. HE THONG THOAT RAC: Rac thai o moi tang duoc do vao gen rac dua xuong gian rac, gian rac duoc bo tr o tang ham va co bo phan dua rac ra ngoai. Gian rac duoc thiet ke kn dao, ky cang de tranh lam boc mui gay o nhiem moi truong. DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 5 IANG IPEIO.OOOIANG 2+8.8OOIANG 3+7.2OOIANG 4+1O.GOOIANG 5+14.OOOIANG +17.4OOIANG 7+2O.8OOIANG 8+24.2OOIANG +27.GOOIANG 10+81.OOOIANG 11+84.4OOIANG 12+87.8OOIANG 13+41.2OOIANG 14+44.GOO+48.OOO+51.4OO$AN IHUONGMAI+57.OOO4 3 2 188OO 84OO 88OO2GOOO1.2OOMIN12OO88OO84OO84OO84OO84OO84OO84OO84OO84OO84OO84OO84OO84OO84OO84OOIANG kY IHUAI+58.OOO25OO81OO4OO8OO8GOO8OO28OO275OG5OG5O275OG5O275OG5O275O84OO84OO84OO84OO84OO84OO84OO84OO5OO2OOO18OO41OO78O88OO84OO84OO84OO84OO84OO84OO84OO84OO84OO84OO84OO84OO84OO84OO54OOIANG 1MAT DUNG TRUC A DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 6 O.OOO8.OOO4 3 2 188OO 84OO 88OO2GOOO1.2OO8E NUOC MAI12OO88OO84OO84OO84OO84OO84OO84OO84OO84OO84OO84OO84OO84OO84OO84OO18OO25OO81OO12OO1OOO18OO1OOO18OO11OO1OOO18OO11OO15OO1OOO18OO11OO1OOO18OO11OO1OOO18OO11OO1OOO18OO11OO1OOO18OO11OO1OOO18OO11OO1OOO18OO11OO1OOO18OO11OO1OOO18OO11OO1OOO18OO11OO1OOO18OO11OO1OOO18OO11OO18OO12OO1OOO8OO81OO18OO78O25OO84OO84OO84OO84OO84OO84OO84OO84OO84OO84OO84OO84OO84OO84OO88OO8OOO18OO8OOOG.OOO+8.8OO+7.2OO+1O.GOO+14.OOO+17.4OO+2O.8OO+24.2OO+27.GOO+81.OOO+84.4OO+87.8OO+41.2OO+44.GOO+48.OOO+51.4OO$AN IHUONGMAI+57.OOOIANG kY IHUAI+58.OOOIANG IPEIIANG 2IANG 3IANG 4 IANG 5IANG IANG 7IANG 8IANG IANG 10IANG 11IANG 12IANG 13IANG 14MINIANG 1MAT CAT A - A DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 7 12OO GOO 215O 58OO 185O 41OO 185O 5GOO 185O GOO 14OO18OO 88OO 84OO 88OO 2OOO2GOOO215O 215O28OO18OO285OGOO2G5O14OO1OOO2G5OGOO2G5O15OOGOO14OO2OOO82OO52OO82OO28OO12OO GOO 1G4O 15OO 18GO 15OO 1GOO 1GOO 18OO 1GOO 1OOO 1875 2G5O 25OO2OOO 88OO 88OO 88OO 18OO15OOGOO18OO285O2G5OGOO2G5O8OO185O15OO2G5OGOO2G5O15OOGOO14OO2OOO82OO52OO82OO21OO5OO 85OOR1OOOR1OOOR1OOO R1OOOR1OOODC8A4 3 2 1W618OO21GOOL0I LEh X00hTh hM8EF NHA IPEO.OOO NHOM IPE 2O.OOOD[CH VU CONG CONGO.OOOF.$INH HOAI CONG ONGO.OOO$ANHO.OOONHOM IPE 1O.OOOFCCCWCWCFCCC8AO VEHOFIHUkEIU8ANGIHONG 8AOO.O5O1.25OIOIVAOCHNH1.2OO1.2OO1.2OO1.2OOO.O5OA174O8OO8OO18OO 11758OO185O885O OOO 24OO 175O 17OO 71OO88OO12OOOOOG5O15OO1GOO8OO4O1O1G4O2GOO 12OO 21OO 11OO 75O 1O5O 7OO 545O 75O 8OO 2OOO 1OOO 4OOO 7OO2O5O75OO5OOOO45O8OO2OOG55O18OOA85O12OO14OO12OO85OMAT BANG TANG TRET DC8A4 3 2 12OO 415O 2OO 425O8OO 1OOO 1OOO

2OO82OO1OOO5O 11OO 2G5O2OO17OO 1OO2OO415O1OO8OOO2OO185O2OO145O2OO 18OO15O2OO11OO215O 1OOO 1O5O 15OO 1GOO 85OO 14OO 85OO 1GOO 15OO 1O5O 1OOO 215O2OO1O5O2OO455O2OOGOOOOOG5O4O5O88OO 84OO 88OO18OO 18OO18OO14OO12OO275O15OO155O155O15OO275O12OO14OO2OO82OO52OO82OO11OO18OO21GOO14OO1OOO1GOO1OOO8OO12OO14OO18OO12OO85O2OO22OO15OO115O8OO82OO52OO82OO15OO 215O 1OOO 1O5O 15OO 1GOO 1OOO 25OO 14OO 1GOO 15OO 1O5O 1OOO 215O 15OO88OO 84OO 88OO2GOOOF.NGU 1F.NGU 2F.NGU 1F.kHACHF.NGU 1 F.NGU 1F.kHACHF.NGU 2F.NGU 1 F.NGU 1 F.kHACH F.kHACH F.NGU 1 F.NGU 1F.NGU 2 F.NGU 2F.kHACH + ANF.kHACH + ANF.kHACH + AN8AN CONG8OO1OOO8OO1OOO11OO18OOA A275O15OO185O1OOO 25OO8OO25OO 2O5O GGOO1OOO15OO GGOO 87OO85O145O22OO2OO88OO 85OO OOO 75O 85O 2OOO 11OO OOO4OOOOO 81OO 85O 75O OOO 42OO 82OO2OOGOO2O5O7OO85O12OO14OO12OO85OMAT BANG TANG DIEN HNH DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 8 PHAN 2 KET CAU (70%) DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 9 CHUONG II TONG QUAN VE KET CAU CONG TRNH II.1 LUA CHON GIAI PHAP KET CAU: II.1.1. HE KET CAU CHIU LUC CHNH: Cac cau kien chiu luc chnh tao thanh cac he chiu luc nha cao tang bao gom : - Cac cau kien dang thanh : cot, dam, thanh chong, thanh giang. - Cac cau kien dang tam : tuong (vach dac hoac co lo cua), san (san phang, san suon, cac loai panel duc san co lo hoac nhieu lop. Trong nha cao tang, san cac tang, ngoai kha nang chiu uon do tai trong thang dung, con phai co do cung lon de khong bi bien dang trong mat phang khi truyen tai trong ngang vao cot, vach, loi nen con goi la nhung san cung (tam cung). - Cau kien khong gian la cac vach nhieu canh ho hoac khep kn, tao thanh cac hop bo tr ben trong nha, duoc goi la loi cung. Ngoai loi cung ben trong, con co cac day cotbo tr theo chu vi nha voi khoang cach nho tao thanh mot he khung bien dang tuong vay. Tiet dien cac cot ngoai bien co the dac hoac rong. Khi la nhung cot rong hnh hop vuong hoac hnh tron se tao nen he ket cau duoc goi la ong trong ong. Dang ket cau nay thuong su dung trong nha co chieu cao lon. Tu cac thanh phan ket cau chnh neu tren, tuy thuoc vao cac giai phap kien truc, khi chung duoc lien ket voi nhau theo nhung yeu cau cau tao nhat dinh se tao thanh nhieu he chiu luc khac nhau. Tuy theo cach to hop cac ket cau chiu luc co the chia thanh 2 nhom : - Nhom thu nhat, ch gom mot loai ket cau chiu luc doc lap nhu khung, tuong, vach, loi hop (ong). - Nhom thu hai la cac he chiu luc duoc to hop tu 2 hoac 3 loai cau kien co ban tro len chang han nhu : + Ket cau khung + vach + Ket cau khung + loi + Ket cau khung + vach + loi. Can cu vao kha nang tiep thu tai trong, nhat la doi voi tai trong ngang co the chia thanh cac he chiu luc nhu sau: a) He khung: -He khung chiu luc duoc tao thanh tu cac cau kien thanh nhu cot, dam, lien ket cung tai cac nut tao thanh cac he khung phang hoac khung khong gian doc theo cac truc luoi cot tren mat bang nha. - Khung be tong cot thep thuong do lien khoi. Tuy nhien, doi voi nha cao tang viec thi cong cac ket cau dang thanh nhu dam,cot cang tro nen phuc tap tren nhung do cao lon. Nhuoc diem nay co the khac phuc bang viec su dung cac cau kien duc san tai cong xuong roi lap ghep. Khung BTCT lap ghep kho thuc hien cac lien ket cung, doi hoi do chnh xac cao trong lap ghep va deu duoc xet den trong qua trnh tnh toan. DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 10 - He khung chiu luc thuan tuy co do cung thap theo phuong ngang nen bi han che su dung trong nha co chieu cao tren 40m. Trong kien truc nha cao tang luon co nhung bo phan nhu hop thang may, thang bo, tuong ngan hoac bao che lien tuc tren chieu cao nha co the su dung nhu loi, vach cung nen he ket cau khung chiu luc thuan tuy tren thuc te khong ton tai. - Cac he khung BTCT lap ghep co the duoc thuc hien bang cong nghe cang sau cac cau kien BT ung luc truoc theo ca hai phuong va duoc su dung co hieu qua trong vung co dong dat. b) He khung ~ vach: He ket cau nay thuong duoc su dung cho nhung nha co mat bang chu nhat keo dai, chiu luc chu yeu theo phuong ngang nha. Cac vach cung duoc bo tr chu yeu doc theo phuong ngang ngoi nha. Trong cac kieu nha lap ghep tam lon tang co the xem cac tam lon nhieu tang co the xem cac tam tuong lien ket voi nhau tao thanh mot he tuong cung ngang doc lien tuc. Cac mo hnh tnh toan phu thuoc cau tao cac mach lap ghep tuong voi tuong va tuong voi san. Ket cau khung - vach thuong su dung pho bien hon ca v he nay phu hop voihau het cac giai phap kien truc cao tang. He ket cau nay tao dieu kien ung dung linh hoat cac cong nghe xay dung khac nhau nhu vua co the lap ghep vua do tai cho cac ket cau BTCT.c) He khung ~ loi: He khung - loi chiu luc thuong duoc su dung co hieu qua cho cac nha co do cao trung bnh va that lon, co mat bang don gian dang hnh chu nhat, hnh vuong. Loi co the dat trong hoac ngoai bien tren mat bang. He san cac tang duoc goi truc tiep vao tuong loi- hop hoac qua cac he cot trung gian. Phan trong loi thuong dung de bo tr thang may, cau thang va cac he thong ky thuat nha cao tang. d) He loi ~ hop: Hop la nhung loi co kch thuoc lon thuong duoc bo tr ca ben trong va gan bien ngoi nha. Khac voi khung - loi, he hop chiu luc toan bo tai trong dung va ngang do san truyen vao, khong co hoac rat t cot trung gian do san. Thong qua viec xem xet va danh gia uu nhuoc diem cua tung he ket cau th moi loai ket cau tren deu co nhung uu nhuoc diem rieng tuy thuoc vao nhu cau va kha nang thi cong thuc te cua tung cong trnh. Trong do ket cau tuong chiu luc (hay con goi la vach cung) la mot he thong tuong vua lam nhiem vu chiu tai trong dung vua la he thong chiu tai trong ngang. ay la loai ket cau ma theo nhieu tai lieu nuoc ngoai da ch ra rang rat thch hop cho cac chung cu cao tang. Uu diem noi bat cua he ket cau nay la khong can su dung he thong dam san nen ket hop toi uu voi phuong an san khong dam. ieu nay lam cho khong gian ben trong nha tro nen dep de, khong bi he thong dam can tro, do vay chieu cao cua ngoi nha giam xuong. He ket cau tuong chiu luc ket hop voi he san tao thanh mot he hop nhieu ngan co do cung khong gian lon, tnh lien khoi cao, do cung phuong ngang tot kha nang chiu luc lon, dat biet la tai trong ngang. Ket cau vach DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 11 cung co kha nang chiu dong dat tot. V vay day la giai phap ket cau duoc chon su dung cho cong trnh. II.1.2. HE KET CAU SAN: Trong cong trnh he san co anh huong rat lon toi su lam viec khong gian cua ket cau. Viec lua chon phuong an san hop ly la rat quan trong. Do vay, can phai co su phan tch dung de lua chon ra phuong an phu hop voi ket cau cua cong trnh. Ta xet cac phuong an san sau: a) He san suon: Cau tao bao gom he dam va ban san. + Uu diem: - Tnh toan don gian. - uoc su dung pho bien o nuoc ta voi cong nghe thi cong phong phu nen thuan tien cho viec lua chon cong nghe thi cong. + Nhuoc diem: - Chieu cao dam va do vong cua ban san rat lon khi vuot khau do lon, dan den chieu cao tang cua cong trnh lon nen gay bat loi cho ket cau cong trnh khi chiu tai trong ngang va khong tiet kiem chi ph vat lieu. - Khong tiet kiem khong gian su dung. b) He san o co: Cau tao gom he dam vuong goc voi nhau theo hai phuong, chia ban san thanh cac o ban ke bon canh co nhip be, theo yeu cau cau tao khoang cach giua cac dam khong qua 2m. + Uu diem: - Tranh duoc co qua nhieu cot ben trong nen tiet kiem duoc khong gian su dung va co kien truc dep,thch hop voi cac cong trnh yeu cau tham my cao va khong gian su dung lon nhu hoi truong, cau lac bo... + Nhuoc diem: - Khong tiet kiem, thi cong phuc tap. - Khi mat bang san qua rong can phai bo tr them cac dam chnh. V vay, no cung khong tranh duoc nhung han che do chieu cao dam chnh phai lon de giam do vong. c) San khong dam (khong co mu cot): Cau tao gom cac ban ke truc tiep len cot. + Uu diem: - Chieu cao ket cau nho nen giam duoc chieu cao cong trnh. - Tiet kiem duoc khong gian su dung. - De phan chia khong gian. - De bo tr he thong ky thuat dien, nuoc. - Thch hop voi nhung cong trnh co khau do vua. DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 12 - Viec thi cong phuong an nay nhanh hon so voi phuong an san dam boi khong phai mat cong gia cong cop pha, cot thep dam, cot thep duoc dat tuong doi dinh hnh va don gian, viec lap dung van khuon va cop pha cung don gian. - Do chieu cao tang giam nen thiet bi van chuyen dung cung khong can yeu cau cao, cong van chuyen dung giam nen giam gia thanh. - Tai trong ngang tac dung vao cong trnh giam do cong trnh co chieu cao giam so voi phuong an san dam. + Nhuoc diem: - Trong phuong an nay cac cot khong duoc lien ket voi nhau de tao thanh khung do do do cung nho hon nhieu so voi phuong an san dam, do vay kha nang chiu luc theo phuong ngang phuong an nay kem hon phuong an san dam, chnh v vay tai trong ngang hau het do vach chiu va tai trong dung do cot chiu. - San phai co chieu day lon de dam bao kha nang chiu uon va chong choc thung do do dan den tang khoi luong san. d) San khong dam ung luc truoc: + Uu diem: Ngoai cac dac diem chung cua phuong an san khong dam th phuong an san khong dam ung luc truoc se khac phuc duoc mot so nhuoc diem cua phuong an san khong dam: - Giam chieu day san khien giam duoc khoi luong san dan toi giam tai trong ngang tac dung vao cong trnh cung nhu giam tai trong dung truyen xuong mong. - Tang do cung cua san len, khien cho thoa man ve yeu cau su dung bnh thuong. - So do chiu luc tro nen toi uu hon do cot thep ung luc truoc duoc dat phu hop voi bieu do momen do tnh tai gay ra, nen tiet kiem duoc cot thep. + Nhuoc diem: Tuy khac phuc duoc cac uu diem cua san khong dam thong thuong nhung lai xuat hien mot so kho khan cho viec chon lua phuong an nay nhu sau: - Thiet bi thi cong phuc tap hon, yeu cau viec che tao va dat cot thep phai chnh xac do do yeu cau tay nghe thi cong phai cao hon, tuy nhien voi xu the hien dai hoa hien nay th dieu nay se la yeu cau tat yeu. - Thiet bi gia thanh cao va con hiem do trong nuoc chua san xuat duoc. II.1.3. KET LUAN: Qua phan tch cac dac diem tren,xem xet cac dac diem ve ket cau cua cong trnh:nhip cot cua cong trnh khong qua lon,cong trnh khong nam trong khu vuc han che chieu cao,can nhac ve yeu cau kinh te va de don gian cho viec thi cong nen ta chon phuong an san suon su dung cho cong trnh. II.2. LUA CHON VAT LIEU: - Vat lieu xay co cuong do cao, trong luong nho, kha nang chong chay tot. - Vat lieu co tnh bien dang cao: Kha nang bien dang deo cao co the bo sung cho tnh nang chiu luc thap. DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 13 - Vat lieu co tnh thoai bien thap: Co tac dung tot khi chiu tac dung cua tai trong lap lai (dong dat, gio bao). - Vat lieu co tnh lien khoi cao: Co tac dung trong truong hop tai trong co tnh chat lap lai khong bi tach roi cac bo phan cong trnh. - Vat lieu co gia thanh hop ly. Nha cao tang thuong co tai trong rat lon. Neu su dung cac loai vat lieu tren tao dieu kien giam duoc dang ke tai trong cho cong trnh, ke ca tai trong dung cung nhu tai trong ngang do luc quan tnh. Trong dieu kien nuoc ta hien nay th vat lieu BTCT hoac thep la loai vat lieu dang duoc cac nha thiet ke su dung pho bien trong cac ket cau nha cao tang. II.3. CAC TIEU CHUAN, QUY PHAM DUNG TRONG TNH TOAN: - Tieu chuan thiet ke ket cau betong cot thep TCVN 356:2005. - Tieu chuan thiet ke tai trong va tac dong TCVN 2737:1995. - Tieu chuan thiet ke nen nha va cong trnh TCVN 45:1978. - Tieu chuan thiet ke mong coc TCVN 205:1998. - Tieu chuan thiet ke va thi cong nha cao tang TCXD 198:1997. II.4. LUA CHON PHUONG PHAP TNH TOAN: II.4.1. SO DO TNH: Trong giai doan hien nay, nho su phat trien manh me cua may tnh dien tu, da co nhung thay doi quan trong trong cach nhn nhan phuong phap tnh toan cong trnh. Khuynh huong dac thu hoa va don gian hoa cac truong hop rieng le duoc thay the bang khuynh huong tong quat hoa. ong thoi khoi luong tnh toan so hoc khong con la mot tro ngai nua. Cac phuong phap moi co the dung cac so do tnh sat voi thuc te hon, co the xet toi su lam viec phuc tap cua ket cau voi cac moi quan he phu thuoc khac nhau trong khong gian. Viec tnh toan ket cau nha cao tang nen ap dung nhung cong nghe moi de co the su dung mo hnh khong gian nham tang muc do chnh xac va phan anh su lam viec cua cong trnh sat voi thuc te hon. II.4.2. CAC GIA THUYET DUNG TRONG TNH TOAN NHA CAO TANG: San la tuyet doi cung trong mat phang cua no (mat phang ngang) va lien ket ngam voi cac phan tu cot, vach cung o cao trnh san. Khong ke bien dang cong (ngoai mat phang san) len cac phan tu (thuc te khong cho phep san co bien dang cong). Bo qua su anh huong do cung uon cua san tang nay den cac san tang ke ben. Moi thanh phan he chiu luc tren tung tang deu co chuyen vi ngang nhu nhau. Cac cot va vach cung deu duoc ngam o chan cot va chan vach cung ngay mat dai mong. Khi tai trong ngang tac dung th tai trong tac dung nay se truyen vao cong trnh duoi dang luc phan bo tren cac san (vi tr tam cung cua tung tang) v co san nen cac luc nay truyen sang san va tu do truyen sang vach. Bien dang doc truc cua san, cua dam xem nhu la khong dang ke. DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 14 II.4.3. PHUONG PHAP TNH TOAN XAC DINH NOI LUC: - Hien nay tren the gioi co ba truong phai tnh toan he chiu luc nha nhieu tang the hien theo ba mo hnh sau: -Mo hnh lien tuc thuan tuy: Giai truc tiep phuong trnh vi phan bac cao, chu yeu la dua vao ly thuyet vo, xem toan bo he chiu luc la he chiu luc sieu tnh. Khi giai quyet theo mo hnh nay, khong the giai quyet duoc he co nhieu an. o chnh la gioi han cua mo hnh nay. -Mo hnh roi rac (Phuong phap phan tu huu han): Roi rac hoa toan bo he chiu luc cua nha nhieu tang, tai nhung lien ket xac lap nhung dieu kien tuong thch ve luc va chuyen vi. Khi su dung mo hnh nay cung voi su tro giup cua may tnh co the giai quyet duoc tat ca cac bai toan. Hien nay ta co cac phan mem tro giup cho viec giai quyet cac bai toan ket cau nhu ETABS, SAP, ... -Mo hnh roi rac - lien tuc (Phuong phap sieu khoi): Tung he chiu luc duoc xem la roi rac, nhung cac he chiu luc nay se lien ket lai voi nhau thong qua cac lien ket truot xem la phan bo lien tuc theo chieu cao. Khi giai quyet bai toan nay ta thuong chuyen he phuong trnh vi phan thanh he phuong trnh tuyen tnh bang phuong phap sai phan. Tu do giai cac ma tran va tm noi luc. +Gioi thieu ve phuong phap phan tu huu han (PPPTHH) -Trong cac phuong phap ke tren, phuong phap phan tu huu han hien duoc su dung pho bien hon ca do nhung uu diem cua no cung nhu su ho tro dac luc cua mot so phan mem tnh toan dua tren co so phuong phap tnh toan nay. -Theo phuong phap phan tu huu han, vat the thuc lien tuc duoc thay the bang mot so huu han cac phan tu roi rac co hnh dang don gian, co kch thuoc cang nho cang tot nhung huu han, chung duoc noi voi nhau bang mot so diem quy dinh duoc goi la nut. Cac vat the nay van duoc giu nguyen la cac vat the lien tuc trong pham vi cua moi phan tu, nhung co hnh dang don gian va kch thuoc be nen cho phep nghien cuu de dang hon dua tren co so quy luat ve su phan bo chuyen vi va noi luc (chang han cac quan he duoc xac lap trong ly thuyet dan hoi). Cac dac trung co ban cua moi phan tu duoc xac dinh va mo ta duoi dang cac ma tran do cung (hoac ma tran do mem) cua phan tu. Cac ma tran nay duoc dung de ghep cac phan tu lai thanh mot mo hnh roi rac hoa cua ket cau thuc cung duoi dang mot ma tran do cung (hoac ma tran do mem) cua ca ket cau. Cac tac dong ngoai gay ra noi luc va chuyen vi cua ket cau duoc quy doi ve cac thanh cac ung luc tai cac nut va duoc mo ta trong ma tran tai trong nut tuong duong. Cac an so can tm la cac chuyen vi nut (hoac noi luc) tai cac diem nut duoc xac dinh trong ma tran chuyen vi nut (hoac ma tran noi luc nut). Cac ma tran do cung, ma tran tai trong nut va ma tran chuyen vi nut duoc lien he voi nhau trong phuong trnh can bang theo quy luat tuyen tnh hay phi tuyen tuy theo ung xu that cua ket cau. Sau khi giai he phuong trnh tm duoc cac an so, nguoi ta co the tiep tuc xac dinh duoc cac truong ung suat, bien dang cua ket cau theo cac quy luat da duoc nghien cuu trong co hoc. -Sau day la thuat toan tong quat cua phuong phap PTHH: DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 15 Roi rac hoa ket cau thuc thanh thanh mot luoi cac phan tu chon truoc cho phu hop voi hnh dang hnh hoc cua ket cau va yeu cau chnh xac cua bai toan. -Xac dinh cac ma tran co ban cho tung phan tu (ma tran do cung, ma tran tai trong nut, ma tran chuyen vi nut.) theo truc toa do rieng cua phan tu. -Ghep cac ma tran co ban cung loai thanh ma tran ket cau theo truc toa do chung cua ca ket cau. -Dua vao dieu kien bien va ma tran do cung cua ket cau de khu dang suy bien cua no. -Giai he phuong trnh de xac dinh ma tran chuyen vi nut ca ket cau. -Tu chuyen vi nut tm duoc, xac dinh noi luc cho tung phan tu. -Ve bieu do noi luc cho ket cau. -Thuat toan tong quat tren duoc su dung cho hau het cac bai toan phan tch ket cau: phan tch tnh, phan tch dong va tnh toan on dinh ket cau. II.4.4. LUA CHON CONG CU TNH TOAN: a) Phan mem ETABS 9.0.4 -Dung de giai noi luc va phan tch dong cho he cong trnh bao gom cac dang va gia tri dao dong, kiem tra cac dang ung xu cua cong trnh khi chiu tai trong dong dat. - Do ETABS la phan mem phan tch thiet ke ket cau chuyen cho nha cao tang nen viec nhap va xu ly so lieu don gian va nhanh hon so voi cac phan mem khac. b) Phan mem SAP 10.0.1 -Dung de giai noi luc cho cac cau kien don gian cua he ket cau nham don gian hoa trong qua trnh tnh toan. c) Mot so luu y: -Khi su dung cac phan mem SAP, ETABS. can chu y den quan niem tung cau kien cua phan mem de cau kien lam viec dung voi quan niem thuc khi dua vao mo hnh. -Quan niem khoi (solid): khi 3 phuong co kch thuoc gan nhu nhau, va co kch thuoc lon hon nhieu so voi cac phan tu khac. -Quan niem ban, vach (shell): khi kch thuoc 2 phuong lon hon rat nhieu so voi phuong con lai. -Quan niem thanh (frame): khi kch thuoc 2 phuong nho hon rat nhieu so voi phuong con lai. -Quan niem diem (point): khi 3 phuong co kch thuoc gan nhu nhau, va co kch thuoc rat be. -Khi ta chia cang min cac cau kien th ket qua se cang chnh xac. Do phan tu huu han truyen luc nhau qua cac diem lien ket cua cac phan tu voi nhau. Neu ta chia cac cau kien ra nhung khong dung voi quan niem cua phan mem th cac cau kien do se co do cung tang dot ngot va lam viec sai voi chuc nang cua chung trong quan niem tnh, tu do dan den cac ket qua tnh cua ca he ket cau se thay doi. DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 16 II.4.5. NOI DUNG TNH TOAN He ket cau nha cao tang can duoc tnh toan ca ve tnh luc, on dinh va dong luc. Cac bo phan ket cau duoc tnh toan theo trang thai gioi han thu nhat (TTGH 1). Trong truong hop dac biet do yeu cau su dung th moi tnh toan theo trang thai gioi han thu hai (TTGH 2). Khac voi nha thap tang, trong thiet ke nha cao tang th tnh chat on dinh tong the cong trnh dong vai tro het suc quan trong va can phai duoc tnh toan kiem tra. II.5. SO LIEU TNH TOAN II.5.1. VAT LIEU Betong mong, san, b nuoc va khung, vach dung M300 voi cac ch tieu nhu sau: -Khoi luong rieng: = 2,5 T/m3 -Cuong do tnh toan: Rn = 130 kG/cm2 -Cuong do chiu keo tnh toan: Rk = 10 kG/cm2 -Modun dan hoi: Eb = 290.103 kG/cm2 Cot thep gan 10 cho ket cau ben tren va dai coc dung loai AIII voi cac ch tieu -Cuong do chiu nen tnh toan: Ra` = 2800 kG/cm2 -Cuong do chiu keo tnh toan: Ra = 3600 kG/cm2 -Cuong do tnh cot thep ngang: Rd = 2800 kG/cm2 -Modun dan hoi: Ea = 2,1.106 kG/cm2 Cot thep gan 10 cho coc khoan nhoi, khung, san dung loai AI voi cac ch tieu: -Cuong do chiu nen tnh toan: Ra` = 2300 kG/cm2 -Cuong do chiu keo tnh toan: Ra = 2300 kG/cm2 -Cuong do tnh cot thep ngang: Rd = 2200 kG/cm2 -Modun dan hoi: Ea = 2,1.106 kG/cm2 Cot thep tron n = 1,3 Khi ptc_ 200(daN/m)-> n = 1,2 DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 21 CHUC NANGptc (kG/m)nptt (kG/m) Hanh lang3001,2360 Phong khach2001,2240 WC2001,2240 Phong ngu2001,2240 Phong an2001,2240 Sanh3001,2360 Cau thang3001,2360 Ban cong3001,2360 III.2. TNH TOAN BAN SAN TANG DIEN HNH : III.2.1. MAT BANG BO TR O SAN: 88OO 84OO 88OO82OO52OO82OO18OO 18OO18OO18OO4825 4825 42OO 42OO 4825 4825 42OO4O254O2552OO4O254O25 DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 22 III.2.2.XAC DINH KCH THUOC SO BO: Dung o san lon nhat: co kch thuoc 5,2m x 4, 325m de tnh. Chieu day san duoc chon phu thuoc vao nhip va tai trong tac dung, co the so bo xac dinh chieu day san theo cong thuc so bo nhu sau: hs = 1 140 50 l1 Trong do: +l1 : la chieu dai canh ngan cua o san voi l1 = 4,325 m. hs =40 501 14325 (87 108) = mm Ta chon san day 100mm: hs = 100 mm. -Ta co kch thuoc dam da chon o chuong II : +oi voi dam chnh :300 x 700 mm +oi voi dam phu : 250 x 500 mm +oi voi dam consol : 300 x 400 mm +oi voi dam moi : 200 x 400 mm -Ta co t so giua chieu cao dam va chieu cao ban san: dbh 400= = 4 > 3h 100 Vay tat ca cac o san deu ngam vao dam. III.2.3. SO DO O BAN SAN SO DO TNH BAN SAN DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 23 III.2.4. TNH TOAN NOI LUC : a. Ban san lam viec hai phuongTnh toan theo so do dan hoi. e xet su lam viec dong thoi cua cac o ban, tnh noi luc trong ban theo so do ban lien tuc : g` = g + 0.5p (g: tnh tai san) p` = 0.5p (p: hoat tai san) Moment o nhip ban san duoc tnh theo cong thuc sau : M1 = mi1.G + m11.P M2 = mi2.G + m12.P Moment o goi duoc tnh theo cong thuc sau : MI= ki1( P + G ). MII = ki2( P + G ) Truong hop goi nam giua hai o san : Lay gia tri Momen lon de tnh toan va bo tr cot thep. Trong do: P = p`.l1.l2 G = g`.l1.l2 l1: Canh ngan cua o ban. l2: Canh dai cua o ban Voi san phong o (o 1, 2) g (tnh tai) = 515,8 + 210 = 725,8 (kG/m2) p (hoat tai)= 240 (kG/m2) Voi san ban cong (o 4,5,6)g (tnh tai)= 595 + 210 = 805 (kG/m2) p(hoat tai) = 360 (kG/m2) Voi san hanh lang(o 3,7) g (tnh tai) = 515,8 (kG/m2) p (hoat tai)= 360 (kG/m2) Cac O 1,2,3,7 thuoc o ban lam viec 2 phuong, 4 dau deu ngam, thuoc so do 9. O san 4,5,6 la ban lam viec 1 phuong. DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 24 SO DO LAM VIEC BAN SAN HAI PHUONG Cac he so m , k tra bang phu thuoc vao loai o ban , va t so = l2/l1 tuong ung. Bang Tra He So mi1, ki1,mi2 va ki2 O san L1 (m) L2 (m) L2/ L1 m91 m92 k91 k92 m11 m12 14.0254.3251.0750.01900.01660.04430.03830.03910.0336 24.0254.21.0440.01860.01720.04340.03970.03820.0344 34.3255.21.2020.02040.01420.04680.03250.04280.0298 73.15.21.6770.02010.00720.04420.01580.04870.0174 Bang tnh gia tri g` , p` , P , G O san g (kG/m2) p (kG/m2) g`=g+0,5p (kG/m2) p`=0,5p (kG/m2) G =g`.L1.L2 (kG) P =p`.L1.L2 (kG) 1725.8240845.8120147242089 2725.8240845.8120142982029 3725.8240845.8120190222699 7518.8360698.8180112652902 Bang Tnh Gia Tri Moment M1, M2, MI va MII O san M1 =m91.G +m11.P (kGm) M2 =m92.G +m12.P (kGm) MI =k91.(P+G) (kGm) MII =k92.(P+G) (kGm) 1361.44314.6744.82643.94 2343.45315.72708.59648.18 3503.57350.541016.54705.93 7367.75131.6626.18223.84 b. Ban san lam viec 1 phuong : - Cac o ban san 4,5,6 lam viec theo so do 2 dau ngamMomen dau ngam: Mg = ql2/12 = (g + p)l2/12 = (805+360)x1.32/12 = 164(kGm/m) Momen nhip : Mnh = ql2/24 = (g + p)l2/24 = (805+360)x1.32/24 = 82(kGm/m) DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 25 III.2.5.TNH TOAN VA BO TR COT THEP CHO BAN SAN : Cot thep chiu luc cua ban san duoc tnh theo truong hop tiet dien hnh chu nhat chiu uon, dat cot don. Cat thanh cac dai ban co b = 1m de tnh toan cot thep. Cac cong thuc de tnh cot thep nhu sau : m20 bMu R.bh

m 1- 1- 2u 0 bSSRbhA R

S0A bh Betong su dung la Mac300 co Rb= 130 kG/cm2. Thep san 10 loai AI co Rs= 2300 kG/cm2. Gia tri gioi hanR = 0,4118 Chon khoang cach tu trong tam cot thep den mep ngoai ban a = 1.5 cm. Chieu cao san :h = 10 cm. h0 = 8.5 cm Ket qua tnh cot thep duoc trnh bay o bang sau: Asc (cm2/m) O san M(kG.m/m) m As (cm2/m)aAs As/ bh0 (%) M1361.440.02940.02991.4356 a1501.890.22 M2314.600.02560.0261.2476 a2001.410.17 MI744.820.06060.06263.0088a1503.350.39 S1 MII643.940.05240.05392.5898 a1503.350.39 M1343.450.0280.02841.3636 a2001.410.17 M2315.720.02570.0261.2516 a2001.410.17 MI708.590.05770.05952.8578a1503.350.39 S2 MII648.180.05280.05422.6068a1503.350.39 M1503.570.0410.04192.0126 a1002.830.33 M2350.540.02850.0291.3916 a2001.410.17 MI1016.540.08280.08654.1568 a1005.030.59 S3 MII705.930.05750.05922.8468 a1503.350.39 Mg1640.01340.01340.6466 a2001.410.17S4 Mnh820.00670.00670.3226 a2001.410.17 Mg1640.01340.01340.6466 a2001.410.17S5 Mnh820.00670.00670.3226 a2001.410.17 Mg1640.01340.01340.6466 a2001.410.17S6 Mnh820.00670.00670.3226 a2001.410.17 M1367.750.02990.03041.4616 a1501.890.22 M2131.60.01070.01080.5186 a2001.410.17 MI626.180.0510.05242.5158 a2002.510.30 S7 MII223.840.01820.01840.8846 a2001.410.17 DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 26 III.2.6. KIEM TRA DO VONG BAN SAN: Ta chon rao san co kch thuoc lon nhat va tai trong nguy hiem nhat de kiem tra do la o san so 3 III.2.6.1.CONG THUC TNH DO VONG:oi voi ban tnh theo so do 2 dau ngam c4 c2 2 c2q l q l l MlI x (cm)384B 24 16B 16B oi voi ban tnh theo so do 2 dau khop c4 c2 2 c25q l q l 5l 5MlI x(cm)384B 24 16B 16B Trong do do cung B: voi b = 0,9 va = 0,45; = 0,15(tai trong dai han); 0s bS S b b,redhZBEA vEA Tnh Z: 20' ' z 1- h(cm)2( ' ) Tnh : 1 15(LT)1,810n Voi: 'sI0A u2v bh ;20 b,serMo bhR; sbEu E;s0A bh; 'II0h 1-2h Tnh dien tch qui doi: Ab,red = (f + )bh0 (cm2) Tnh s : bt,ser plsls R W1, 25-MVoi ls = 1,1 - doi voi tai trong tac dung ngan han ls = 0,8 - doi voi tai trong tac dung dai han Neu s> 1 th lay a=1 Voi: 'so so 3 bopl bo2(I uI uI )W S (cm)h - x Trong do : 0x h; 3bobxI 3 ; 2so sI A(h - x - a) ; ' ' ' 2so sI A(x - a ) ;2bob(h - x)S 2 DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 27 III.2.6.2. DO VONG CHO PHEP: o vong cho phep cua cau kien khi:L < 6m: [f] = L/200 L < 7.5m: [f] = 3cm L > 7.5m: [f] = L/250 Vay doi voi ban san nay th [f] = L/200 = 432.5/200 = 2.16(cm) Cuong do tieu chuan cua be tong Mac300: Rb = 130 (kG/cm2); Rbt = 10 (kG/cm2) Mo dun dan hoi cua BT M300 va thep doc A-III: Eb = 2,9x105 (kG/cm2);Ea = 2,1x106 (kG/cm2) Chieu cao lam viec cua ban: h0 = h - a(cm), a = 1.5cm(ban) III.2.6.3. KET QUA KIEM TRA DO VONG CUA BAN SAN: O ban san so 3 co nhung thong so nhu sau : -Do o san chiu tai trong dai han nen ta co : b = 0,9; = 0,15; S = 0,8 -Momen uon lon nhat trong o san : Mc = 503.57 (kg.m) -Chieu cao lam viec cua ban: h0 = h - a=10 -1.5=8.5(cm), a = 1.5cm -Chieu dai o san : l = 4.325 m -Dien tch cot thep tnh toan : As = 2.012 (cm2) -Dien tch cot thep chon : As` = 2.83 (cm2) Cac thong so can tnh toan :

22 20 b,ser130M 503.57 10o 0, 054bhR 100 8, 5== s02.012 A 0.0024bh 100 8.5= = 6s5bE 2,1 10u 7, 24E2,9 10== Io2ah 8.52 1.5h 0.353 == 'sI0A u 7.24 2.83 0.162v bh 0.15 100 8.5 = = 'IIh0.353 1- 0.161 0,1322 2 = =1 1 0.09415(o ) 1 5(0.054 0.132)1.8 1.810u 10 0.0024 7.24= =+ ++ Ab,red = (f + )bh0 = (0.16 + 0.094)x 100x 8.5 = 215.9 (cm2) 2 20I 0.094z 1- h 1 8.5 8.35 (cm)2( ) 2(0.16 0.094) = =+ DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 28 0x h 0.094 8.5 0, 799(cm) = =3 34bo17bx 100 0.799I (cm)3 3= =2 2 4so s119.32 I A(h - x - a) 2.012 (10 0.799 1.5) (cm) = =2 23bob(h - x) 100 (10 0.799)S 4233 (cm)2 2 = ='so so 3 bopl bo2(I uI uI )2(17 7.24 119.32)W S 4233 4264 (cm)h - x 10 0.799=+ + = => bt,ser plsls50357R W10 42641.25- 1.25 0.8 0.573M = = Vay : 7 2 0s b5 6S S b b,redhZ8, 5 8.35B 36.7 10(kg.cm) 0.573 0.90.15 2.9 10 215.9 2.1 10 2.6309 EA vEA= = + o vong cua san la : 2 c4 c2 2 c27q l q l l M l 50357 (432.5)I 1.6 (cm)384B 24 16B 16B16 36.7 10 < [f] = 2.16 (cm) Vay ban san thoa man dieu kien do vong. DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 29 CHUONG IV THIET KE CAU THANG BO IV.1 SO DO BO TR KET CAU CAU THANG: 16430010R102011511511511520806020160120650 Tay vin inox 60Inox vuong20 x 20 xoay 45*La inox5x 20TtcBan thangVua tratGach xaya lot san 52OO8OO2OOOOOO2OOO8OO8OO 2O5O 2OOO0AM ThAh0(2OOx4OO) MAT BANG KET CAU CAU THANG BO DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 30 17OO17OO8OO 2O5O 2OOO 2OO SO DO KET CAU CAU CAU THANG BO IV.2CHON KCH THUOC TIET DIEN: Cau thang tang dien hnh cua cong trnh nay la loai cau thang 2 ve dang ban Chieu cao tang la 3.4m. Chieu cao bac la 189mm. Chieu rong bac la 250mm. Goc nghieng cua cau thang: tgu = h/b = 189/250 = 0.756 -> cosu = 0.7986 Chieu cao tiet dien thang dung cua ban thang: h` = hb/cos u = 150mm Ve 1 co 9 bac Ve 2 co 9 bacTong chieu cao: 189x18 = 3400 (mm). Ban thang khong co dam limong nen lam viec nhu san mot phuong. Chon chieu day ban thang hb = 120mm Chon dam thangco hd = 400mm, bd = 200mm. IV.3VAT LIEU: Betong Mac300:Rb = 130 (kG/cm2), Rbt = 10 (kG/cm2) Thep AIII ( 10):Rs = Rs` = 3600 (kG/cm2),Rsw = 2800 (kG/cm2),Thep AI ( < 10): Rs = Rs` = 2300 (kG/cm2),Rsw = 1800 (kG/cm2). Eb= 290000 (kG/cm2);Es= 2,1.106 (kG/cm2 ) DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 31 IV.4TNH TOAN BAN THANG: IV.4.1TAI TRONG: IV.4.1.1 Tai trong tac dung tren ban thang : Theo TCVN 2737 - 1995 ta co : + Tinh tai : (duoc cau tao nhu sau) Mat cat cau thang Ban nghieng duoc xac dinh theo chieu day tuong duong : =21. .itt| tJ| i (kG/cm2) Trong do i : khoi luong lop thu i ni : he so tin cay cua lop thu i tdi : chieu day tuong cua lop thu i theo phuong ban nghieng,duoc xac dinh nhu sau : oi voi lop gach da maitd1 = + ++ += 125 18.O 1cus 1 O.7O8G25| |||| || = 1.434cm oi voi lop gach vuaXM td2 = ++= 25 18.Ocus 2 O.7O8G25| |||| || = 2.8cm oi voi lop bac thang gach xay td2 == =18.Ocus O.7O8G 7.552 2||cm DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 32 TAI TRONGVat lieu tdi(m) i(kG/m3)ng`i(kG/m2) a mai0.014322001.135 Vua xi mang0.028018001.261 Bac thang (gach xay) 0.075518001.2163 Lop be tong cot thep 0.1225001.1330 TNH TAI Vua xi mang0.028018001.261 Tong cong g2tt = 650kG/m2 + Hoat tai : (Lay theo TCVN 2737 - 95) ptc = 300 (daN/m2) va n = 1.2 => ptt = 300x1.2 = 360(kG/m2) + Tong tai tac dung len ban thang phan bo theo chieu nghieng ban q2 = g2tt + ptt.cosu = 650 + 360x0.7986= 938 (kG/m2) Tai trong phan bo tren 1m be rong ban thang : q2 = 938 (kG/m) IV.4.1.2 Tai trong tac dung tren ban chieu ngh : TAI TRONGVat lieuhi(mm)i (kG/m3)ngttcn(kG/m2) a xe1022001.124 Vua xi mang2018001.243 Lop be tong cot thep12025001.1330 TNH TAI Vua xi mang2018001.243 HOAT TAICau thang3001.2360 Tong congq1 =801 Tai trong phan bo tren 1m be rong ban thang : q1 = 801 (kG/m) IV.4.2 SO DO TNH TOAN: Hien dang ton tai rat nhieu quan diem khac nhau ve so do tnh cau thang dang ban. Tuy nhien, trong do an nay, em da phoi hop 3 so do tnh co ban de co su thiet ke an toan nhat. Boi v: Trongquatrnhthicongcongtrnh,cacketcaudam,cot,vach,sanseduocthi congtruoc.Banthanglaketcaudoclapsethicongsaucung.Neuthicongkhong dung yeu cau, khong the dam bao do ngam cung cua ban thang va dam thang. Congtrnhcomatbangrong,khixayrahoahoan,dongdathoacsucobat thuong, cau thang bo dong vai tro thoat hiem nen uoc tnh tai trong tac dung len cau thang tang len nhieu lan so voi bnh thuong. Ban chiu luc theo mot phuong, cat 1m theo phuong chiu luc de tnh toan. DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 33 a) So do 1: 1 goi co dinh , 1 goi di dong( chon momen max tai nhip) b) So do 2: 2 goi co dinh( chon momen min tai doan gay) c) So do 3: 2 dau ngam( chon momen min o goi) IV.4.3. TNH COT THEP: -Mnhip = 3.07(Tm) = 307000 (kGcm). -Mgoi = - 0.64(Tm) = -64000 (kGcm) -Mgay = - 0.75(Tm) = -75000 (KGcm) Chon a = 2 cm => ho = h - a = 12 - 2 = 10 (cm)

m20 b bMu .R.bh

m 1- 1- 2u 0 bSSRbhA R

S0A bh Vi tr Momen (kGcm) Rs (kG/cm2) m AS Chon thep AS chon % Nhip30700036000.2360.2739.85812a10011.310.94 Goi- 6400023000.0490.0502.8268a1503.350.34 oan gay- 7500023000.0580.0603.3408a1503.350.34 DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 34 IV.4.4KIEM TRA KHA NANG CHIU CAT CUA BAN THANG: b4 max n bt 0 bt 0Q (1 + )R bh = 0.75R bh BIEU DO LUC CAT Giai noi luc ta duoc luc cat lon nhat tai goi trong 3 so do: Qmax = 2.59 (T) 0.75Rbtbh0 = 0.75x10x100x10 = 7500 (kG) = 7.5 (T) > Qmax = 2.35 (T) IV.5TNH TOAN DAM THANG : - DAAM THANG COU TIEAT DIEN : B X H = 20CM X 40CM - Chieu dai nhip dam thang : L = 5.2m a)Tai trong: Tai trong do ban thang truyen vao (bang phan luc cua ban thang) q1 = 3.12 Tm = 3120 (kG/m) PHAN LUC GOI TUA Tai trong ban than dam thang q2 = 0.2 x 0.4 x2500 x 1.1 = 200 (kG/m) Tai trong do o ban truyen vao (L1 = 4.325; L2 = 5.2) 1 2 13( - L ) 4.325 (5.2 - 4.325)2LLq = q = 875.8 = 1657(kG / m)2 DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 35 Trong do, hoat tai tac dung len san chieu toi duoc tnh toan theo o san so 3 TAI TRONGLOP CAU TAOd (cm)n (KG/m3) gtt (KG/m2) Gach ceramic11.1200022 Vua lot31.2180064.8 San BTCT101.32000275 Vua trat tran1.51.1250032.4 Thiet bi VS va M&E 1.21800100 TNH TAI Tran thach cao11.2180021.6 HOAT TAI1.2300360 Tong875.8 =>Tong tai trong tac dung len dam thang q = q1 + q2 + q3 = 3120 + 200 + 1657 = 4977(kG/m). b)So do tnh: Dam thangco hai dau ngam,nhip L = 5.2m c)Noi luc: -Mg = qL2/12 = 4977x5.22/12 = 11215(kG.m) -Mnh= qL2/24 = 4977x5.22/24 = 5607(kG.m) d)Tnh toan cot thep doc: Dung betong M300 co Rb = 130 (KG/cm2); Rbt = 10 (KG/cm2) - Thep AIII ( 10) co Rs = Rs` = 3600 kG/cm2. Rsw = 2800 kG/cm2 -Thep AI ( < 10) co Rs = Rs` = 2300 kG/cm2.Rsw = 1800 kG/cm2 => R = 0.58;R =0.412. Gia thiet a = 5cm ho = 40 - 5 = 35 (cm)

m20 b bMu .R.bh

m 1- 1- 2u 0 bSSRbhA R

S0A bh Vi tr M (KGm) Ra (KG/cm2) m Astt (cm2) Thep chon Asc (cm2) (%) Nhip506736000.1590.1744.43144.610.66 Goi1121536000.3180.3488.8216+2189.111.3 DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 36 => min < < max = nRaR 130u . 0.58 2.1()R 3600 e) Tnh cot thep ngang: Qmax = 0.5qL = 0.5 x 4977 x 5.2= 12940(kG) -Kiem tra dieu kien han che: max n 0 0 b4 bt btQ (1 )R bh 0, 75.R .b.h 0,75.Rbt.b.h0 = 0,75x10x20x35 = 5250 (kG) = 5.25 (T) < Qmax = 12940 (T) Betong khong du chiu cat nen can tnh cot dai. -Tnh cot dai: Dung dai 6, 2 nhanh. Buoc dai tnh toan: 22 2o btmaxs . .8Rbh 8 10 20 351800 2 0.283 11.9(cm)Q 12940Rttn f = =Buoc dai cuc dai: 2 2o btmaxmaxs1.5Rbh 1.5 10 20 3528.4(cm)Q 12940 = = Buoc dai cau tao:(h = 40cm < 45cm) - sct = min(h/2;15cm) = 15cm cho doan gan goi - sct = min(3h/4;50cm) = 30cm cho doan giua dam Bo tr dai:- s = 10 cho doan 1/4L gan goi tua - s = 20 cho doan 1/2L giua dam f) Tnh cot xien:

sw sww n f 1800x2x0.283q = = =101.88(kG/ cm)s 10R

bw o bt wQ = 2.8h Rbq = 2.8x35 10x20x101.88 = 13989(kG)> Qmax= 2940(kG) -> Khong can tnh cot xien. DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 37 CHUONG V TNH TOAN BE NUOC MAI V.1SO LIEU TNH TOAN: V.1.1. KIEN TRUC: - Trong cong trnh gom 2 loai be nuoc: Be nuoc duoi tang ham dung de chua nuoc duoc lay tu he thong nuoc thanh pho va bom len mai. Be nuoc mai:Cung cap nuoc cho sinh hoat cua cac bo phan trong cong trnh va luong nuoc cho cuu hoa. -Be nuoc mai nam tren tang ky thuat, cao do cua nap be la + 57.000 m. Be nuoc mai duoc dat tren he cot chnh, mat tren day be cao hon cao trnh san tang k thuat la 110 cm. V.1.2. KCH THUOC SO BO: - Be nuoc mai dat giua khung truc 2,3 va khung truc B,C - Be nuoc mai co kch thuoc 8.8 5.6 2.0 (m3). Cao trnh nap be la +57.000 m. - Be nuoc gom day be, thanh be, nap be, dam day va cac dam chia nho nap be va day be(khong co dam nap theo chu vi nap be) duoc duc BTCT toan khoi.- Chon kch thuoc ban nap : hbn = 100 mm

-Chon kch thuoc ban day : hbd = 150 mm

-Chon kch thuoc ban thanh : hbt = 120 mm

- Chon kch thuoc dam nap (DN):b x h = 200 x 400 mm - Chon kch thuoc dam day 1(D1): b x h = 300 x 700 mm

- Chon kch thuoc dam day 2,3(D2;D3): b x h = 300 x 500 mm - Chon kch thuoc cot la bxh = 400x400 mm V.1.3. VAT LIEU: Betong M300: Rb = 130 (kG/cm2 ), Rbt = 10 (kG/cm2). Thep AIII ( > 10): Rs = Rs` = 3600 (kG/cm2), Rsw = 2800 (kG/cm2). Thep AI ( < 10): Rs = Rs` = 2300 (kG/cm2), Rsw = 1800 (kG/cm2). DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 38 88OO5GOO44OO 44OO MAT BANG DAM NAP BE V.2. TNH TOAN NAP BE: V.2.1SO DO TNH: Napbecokchthuocla8.8x5.6mduocchianhothanh2obannhocokchthuoc 4.4 x 5.6 m Ta co t so giua hai canh cua o ban : 215.6l 1.273l 4.4 => o ban lam viec theo 2 phuong T so dbh40 4 3h 10=> ban ngam vao dam.Nap be do be tong toan khoi voi thanh be => ban ngam vao thanh be Vay so do tnh cuao banla: ban 4 dau ngam (ngam vao dam nap va ngam vao thanh be) .Noi luc o ban tra theo so do 9. 5GOO44OO DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 39 V.2.2TAI TRONG: + Tinh tai: Thanh phand (cm) (Kg/m3) gc (Kg/m2) n gtt (Kg/m2) Lop vuaximang21800 361.346.8 San betong cot thep102500 2501.1275 Vua trat chong tham1.51800 271.335.1 TONG CONG357 + Hoat tai: Do nap be khong co muc dch su dung khac nen chon hoat tai la hoat taisua chua: p = 75 (KG/m2) => Tong tai tac dung len nap be: qtt = 357+ 751.3 = 455 (KG/m2) V.2.3NOI LUC VA TNH COT THEP: * Voi o ban co kch thuoc (5.6m x 4.4m) ta co : Ta co 215.6l 1.273l 4.4

P =qtt l1l2 = 455 x 5.6 x 4.4 = 11211.2 (kG) Tra bang (so do 9) ta duoc:m91= 0.0208, m92 = 0.0128, k91 = 0.0474, k92 = 0.0584 - M1 = m91 x P = 0.0208 x 11211.2 = 233.2 kGm/m - M2 = m92 x P = 0.0128 x 11211.2 = 143.5 kGm/m - MI =k91 x P = 0.0474 x 11211.2= 531.4 kGm/m - MII = k91 x P = 0.0584 x 11211.2 = 654.7 kGm/m Tnh cot thep: - Be tong M300 Rn = 130 (kG/cm2) - Cot thep san AI Ra = 2300 (kG/cm2) - Tnh ban nhu cau kien chiu uon, tiet dien bh = 10010 cm. - Chon ao = 1,5cm ho = 10 - 1,5 = 8,5 (cm) - Cong thuc tnh:

m20 b bMu .R.bh

m 1- 1- 2u 0 bSSRbhA R

S0A bh DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 40 - Ham luong cot thep: ham luong cot thep khong duoc qua nhieu de tranh pha hoai don, cung khong duoc qua t: min max .voi = SoAbh. max = bRsR130 0.412 0.023R 2300 = 2.3 % min: Theo TCVN min = 0,05%, thuong lay min = 0,1%. BANG TNH COT THEP CHO BAN NAP Khieu M (kGm/m) ho (cm) AS

(cm2) Thep chon AS chon % M1233.28.50.02480.02511.2086 a2001.410.17 M2143.58.50.01530.01540.7406 a2001.410.17 MI531.48.50.05660.05832.8008 a1503.350.39 MII654.78.50.06970.07233.2748 a1503.350.39 Xung quanh lo tham ta gia cuong 8a50 ( dat theo hai phuong vuong goc nhau, moi phuong hai thanh ). So thep gia cuong dam bao lon hon so thep bi mat di. V.3TNH TOAN BAN THANH: V.3.1. TAI TRONG: Thanh be chiu tac dung cua gio va ap luc nuoc. Co 2 to hop nguy hiem nhat la: Be chua day nuoc + gio hut. Be khong chua nuoc + gio day. Gia tri tai trong: - Tai gio: q = W x 1m = n x W0 x k x c x 1m n: he so tin cay cua tai trong gio; n = 1.2. Vung IIA; dang dia hnh B => W0 = 83 (kG/m2). c = + 0.8 doi voi gio day va - 0.6 doi voi gio hut. k: h = 58.2 m => k = 1.3728 => qday= 1.2 x 83 x 1.3728 x 0.8 x 1 = 109.4 (kG/m) qhut= 1.2 x 83 x 1.3728 x 0.6 x 1 = 82 (kG/m) (ve do lon). - Ap luc nuoc: Phan bo theo hnh tam giac, lon nhat o day be:p = 1.1 x 1000 x 2= 2200 (kG/m2). => luc tac dung len dai thanh rong 1m: Pnuoc = 2200 (KG/m) DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 41 V.3.2. SO DO TNH: Co 2 loai o ban thanh kch thuoc: c x h = (8.8 x 2)mcoc 8.8h 2= = 4.4> 2 c x h = (5.6 x 2)mco5.6 ch 2= = 2.8 > 2 Voi t so 2 canh cua o ban th cac o ban lam viec theo dang ban dam ( theo 1 phuong). Cat dai co be rong 1 m theo phuong canh dung de tnh toan.So do tnh 1 dau ngam,1 dau khop. 2OOO2OOO Truong hop be day nuoc va gio hut DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 42 V.3.3. NOI LUC: Tach thanh 2 so do tnh. Noi luc duoc cong gop lai tu 2 so do. so do 1 so do Z8 8 8 8 L 8o do 1. 2 2A-p.l -82 2M = = = 41(kGm)8 8

2 2max9.p.l 9 82 2M = = = 23(kGm)128 128 tai x = 0.625l 8o do Z. 2 2-p.l -2200 2M = = = 587(kGm)A 15 15

2 2maxp.l 2200 2M = = = 262(kGm)33.6 33.6 tai x = 0.553l Vi tr co tiet dien momen duong va momen am lon nhat do tai trong gio va ap luc nuoc gay ra khong that su trung khop nhau.Tuy nhien gia tri momen do ap luc nuoc gay ra lon hon nhieu so voi tai trong gio gay ra nen de don gian va thien ve an toan,ta cong 2 gia tri momen lai de co momen am va momen duong lon nhat. -> MA = 41 + 587 = 628(kGm) Mmax = 23 + 262 = 285(kGm) V.3.4. TNH TOAN COT THEP: Mgoi = MA = 628 (kGm) Mnhip =Mmax = 285 (kGm) Chon a = 2 cm => ho = h - a = 12 - 2 = 10 (cm)

m20 b bMu .R.bh

m 1- 1- 2u 0 bSSRbhA R

S0A bh O ban Vi tr Momen (kGm) Rs (kG/cm2) m AS Chon thep AS chon % Nhip28523000.0220.0221.248a2002.500.25 1,2 Goi62823000.0480.0492.778a1802.790.28 Theo phuong canh dai cua be, dat thep cau tao 6a200 DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 43 V.3.5 . KIEM TRA BE RONG KHE NUT: ( ket qua duoc the hien chung o phan sau) V.4 .TNH TOAN BAN DAY: 88OO54OO44OO 44OO5GOO MAT BANG DAM SAN DAY HO V.4.1SO DO TNH: aybecokchthuocla8.8x5.6mduocchianhothanh2obannhocokchthuoc 4.4 x 5.6 m Ta co t so giua hai canh cua o ban : 215.6l 1.273l 4.4 => o ban lam viec theo 2 phuong T so dbh50 3.33 3h 15=> ban ngam vao dam.Vay so do tnh cua hai loai o ban deu la: ban 4 dau ngam (ngam vao dam). Noi luc o ban tra theo so do 9. V.4.2TAI TRONG: + Tinh tai: Thanh phand (cm) (Kg/m3)gc (Kg/m2)ngtt (Kg/m2) Lop vuaximang21800 361.346.8 San betong cot thep152500 3751.1412.5 Vua trat chong tham1.51800 271.335.1 Lop gach men118001801.1198 TONG CONG692.4 DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 44 + Hoat tai: (mot trong 2 truong hop) ay be chiu ap luc nuoc day voi tai trong nhu sau : p = 1.1 x 1000 x 2= 2200 (kG/m2). - Tai trong sua chua : p = 75 (KG/m2) Ta nhan thay tai trong cua nuoc tac dung len ban day lon hon rat nhieu so voi tai trong sua chua nen hoat tai duoc xet o day la tai trong cua cot nuoc => Tong tai tac dung len day be: qtt = 693 + 2200 = 2693 (KG/m2) V.4.3NOI LUC VA COT THEP: * Voi o ban co kch thuoc (5.6m x 4.4m) ta co : Ta co 215.61.273l ~1l 4.4

P =qtt l1l2 = 2693 x 5.6 x 4.4 = 66356 (kG) Tra bang (so do 9) ta duoc:m91= 0.0208, m92 = 0.0128, k91 = 0.0474, k92 = 0.0296 - M1 = m91 x P = 0.0208 x 66356 = 1380.2 kGm/m - M2 = m92 x P = 0.0128 x 66356 = 849.36 kGm/m - MI = k91 x P =0.0474 x 66356 = 3145.27 kGm/m - MII = k92 x P = 0.0296 x 66356 = 1964.14 kGm/m Tnh cot thep: - Be tong M300 Rb = 130 (kG/cm2) - Cot thep san AIII Rs = 3600 (kG/cm2) - Tnh ban nhu cau kien chiu uon, tiet dien bh = 10015 cm. - Chon ao = 2cm ho = 15 - 2 = 13 (cm) - Cong thuc tnh:

m20 b bMu .R.bh

m 1- 1- 2u 0 bSSRbhA R

S0A bh - Ham luong cot thep: ham luong cot thep khong duoc qua nhieu de tranh pha hoai don, cung khong duoc qua t: min max .voi = SoAbh. max = bRsR130 0.412 0.023R 2300 = 2.3 % min: Theo TCVN min = 0,05%, thuong lay min = 0,1%. DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 45 BANG TNH COT THEP CHO BAN DAY Khieu M (kGm/m) ho (cm) AS

(cm2) Thep chon AS chon % M11380.2130.06280.06493.04810 a2003.920.3 M2849.36130.03870.03941.85110 a2003.920.3 MI3145.27130.14320.15527.28610 a1007.85 0.6 MII1964.14130.08940.09384.40310 a1505.230.4 V.4.4KIEM TRA BE RONG KHE NUT: ( xem ket qua trnh bay o phan tnh toan khe nut) V.5 TNH TOAN KHUNG BE NUOC: Taitrongcuabanthanh,bannapvabandayduoctruyenvaodam.Sudungphan memdetnhtoannoiluc,giaogiuacotvoidamlanutcung,trongluongbanthan cua khung do phan mem tu tnh toan voi he so an toan 1.1. V.5.1 XAC DINH TAI TRONG: 88OO5GOOMAT BAh0 TRuYEh TA BAh hAF LEh BAh ThAhh - Tai trong ban nap truyen len ban thanh truc B,C dang tam giac: q = qs x 4.4 = 455 x4.42= 1000 kG/m - Tai trong ban nap truyen len ban thanh truc 2,3 dang hnh thang: q = qs x 4.4 = 455 x 4.42 = 1000 kG/m Tai trong ban thanh truyen xuong : q = 1,1 . 0,12 . 2500 . 2 = 660 (kG/m) DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 46 V.5.2. TNH TOAN DAM BE: V.5.2.1. Noi luc : V.5.2.1.1. Dam nap : a) So do tnh: 2 dau khop,nhip dam la 5.6m,chiu tai ban nap truyen vao dang hnh thang. b) Bieu do noi luc: BIEU DO MOMEN DAM NAP BIEU DO LUC CAT DAM NAP DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 47 V.5.2.1.2Dam day: 88OO44OO 44OO5GOO MAT BANG BO TR DAM DAY a) Tai trong tac dung len dam day: - Dam day 1: (DD1) q = 1OOOk0/mTA 00 BAh hAF TRuYEh Xu0h0TA 00 TR0h0 Lu0h0 BAh ThAhhq = GGOk0/m44OO 44OO - Dam day 2: (DD2) 5GOOq = 1OOOk0/mTA 00 TR0h0 Lu0h0 BAh ThAhhq = GGOk0/m DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 48 b) Nhap mo hnh Etabs:-Nhap khung ho nuoc mai(gom cot,dam day,ban day) -Tai trong gan len ban day: +Hoan thien: 280kG/m +Hoat tai nuoc day: 2200kG/m -Tai trong gan len dam day nhu da tnh o tren. MO HNH ETABS KHUNG HO NUOC DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 49 c) Bieu do noi luc : BIEU DO MOMEN DAM DAY BIEU DO LUC CAT DAM DAY DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 50 V.5.2.2. Tnh cot thep cho dam ho nuoc: a) Tnh thep doc: Dung betong M300 co Rb = 130 (KG/cm2); Rbt = 10 (KG/cm2) - Thep AIII( 1O) co Rs = Rs` = 3600 kG/cm2;Rsw = 2800 kG/cm2 -Thep AI( 1O) < co Rs = Rs` = 2300 kG/cm2;Rsw = 1800 kG/cm2 => R = 0.58;R = 0.412.

m20 b bMu .R.bh = 20 b bM.R.bh m 1- 1- 2u 0 bSSRbhA R

S0A bh DO AN TOT NGHIEP KSXD KHOA 2005 ~2010 CC CAO CAP ~ BNHTHANH~ TPHCM GVHD KET CAU: THAYMAIHA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 51 BANG TNH THEP DAM HO NUOC TIET DIEN DAM TEN DAM b(cm)h(cm)h0(cm) VI TR M (kGcm) m AS (cm2) Chon thep AS chon % DN 204035 BUNG 679000 0.1910.2145.7073166.030.675 307065 BUNG 4313000 0.2620.31021.80962222.811.639 D1 307065 GOI 2796000 0.1700.18713.18342215.201.397 305045 BUNG 1160000 0.1470.1607.7824168.040.565 D2 305045 GOI 776000 0.0980.1045.0523166.030.447 D3 305045 BUNG 2016000 0.2550.30014.64442215.201.690 Ghi chu: oi voi dam nap DN va dam day DDDD3 do momen goi rat nho nen ta dat thep cau tao tai goi la 216DO AN TOT NGHIEP KSXD KHOA 2005-2010CC CAO CAP~ BNH THANH ~ TPHCM GVHD KET CAU : THAY MAI HA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 52 b) Tnh toan cot dai cho dam ho nuoc: Phuong phap tnh : - Khoang cach cot dai:tt ctmaxs = min(s ,s ,s ) - Khoang cach tnh toan cua cot dai: 20 btsw sw tt28R bhs = R .n.fQ - Khoang cach lon nhat cua cot dai: 20 btmax1,5R bhs =Q - Khoang cach cau tao cua cot dai:ctsct1= s min(h/2 ;150mm) , khi h 450mm ct1s = min(h/3 ;300mm) , khih ~ 450mm ct2s = min(3h/4 ;500mm), khih 300mm O giua dat cot dai thua theo buoc dai cau tao nhu sau: s _ 3.h4va s _ 500mm c) Tnh cot xienKha nang chiu cat nho nhat cua be tong: sw0 wb btQ 2,8h R bq(kG)> Q(thoa) => khong can bo tr cot xien sw0 wb btQ 2,8h R bq(kG)< Q(khong thoa) => ta phai tnh cot xien Trong do: sw swswR .n.Iq s Rsw =1800 (kG/cm2) ( dung thep AI) Rbt=10 (kG/cm2)(Be tong M300) DO AN TOT NGHIEP KSXD KHOA 2005-2010CC CAO CAP~ BNH THANH ~ TPHCM GVHD KET CAU : THAY MAI HA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 53 Tu ket qua noi luc xuat ra tu ETABS nhu hnh tren, ta lap bang tnh thep dai sau : TIET DIEN DAMTEN DAM b(cm)h(cm) h0(cm) Q (T) Stt (cm) Sct (cm) S1 (cm) S2 (cm) Qwb

NHAN XET DN 204035 3.806 209.631515 20 14.06 THOA D1 307065 29.058 21.7623315 20 31.99 THOA D2 305045 13.316 58.3123315 20 26.12 THOA D3 305045 11.786 35.6816715 20 18.08 THOA Vay ta khong can tnh toan cot xien cho cac dam cua ho nuoc. V.5.3. TNH TOAN COT HO NUOC: - Do noi luc trong 4 cot ho nuoc la nhu nhau nen ta ch tnh cho 1 cot - Do noi luc cot thanh ho qua nho nen ta bo tr thep cau tao 44 18 Xuat ket qua noi luc ho nuoc tu ETABS CotVi trTo hopP(T)M2(Tm)M3(Tm)V2(T)V3(T) C1 - THANH0TINHTAI-0.880000 C1 - CHAN0TINHTAI-45.156.00-12.00-46.3921.00 a) Cong thuc tnh toan cot nen lech tam:Do TCVN chua co qui dinh ve tnh toan cot chiu nen theo 2 phuong nen ta quan niem tnh toan cho tung phuong rieng (se an toan hon). Dien tch thep cua cot se bang tong luong thep theo 2 phuong. Trnh tu thiet ke cho cot chiu nen lech tam 1 phuong dat thep doi xung. Tnh do lech tam ban dau ng0 01e e e-o lech tam do noi luc: 01Me N

-o lech tam ngau nhien nghe 25(do sai so thi cong) nhung luon luon _ 2cm Tnh he so uon doc: th1q N1-N -Luc nen toi han: a ath b b 2dh06, 4 SN EJ EJKI S la he so ke toi do lech tam -Khi eo < 0,05h lay S = 0,84 DO AN TOT NGHIEP KSXD KHOA 2005-2010CC CAO CAP~ BNH THANH ~ TPHCM GVHD KET CAU : THAY MAI HA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 54 -Khi 0,05h < eo < 5h lay S = 00,11S e0,1h -Khi eo > 5h lay S = 0,122 -Kdh la he so ke toi tnh chat dai han cua tai trong: dhdhdhhM N2K 1hM N2 -Neu khong tach rieng Mdh, Ndh th lay Kdh = 2 -Neu Mdh nguoc dau voi M th Mdh mang dau am. Neu Kdh < 1 phai lay Kdh = 1 -Mdh, Ndh la momen va luc doc do tai trong dai han gay ra. -Modun dan hoi cua thep Ea = 2,1 x 106 (kG/cm2) -Momen quan tnh cua thep: Ja = tbh0(0,5h -a )2 -Gia thiet t = 1 - 2% (ham luong thep tong cong) Tnh do lech tam tnh toan - 0he qe - a2 - 0he' qe - a'2 Xac dinh truong hop lech tam: bNx R.b

-Neu x < u0h0 th lech tam lon -Neu x _ u0h0 th lech tam be Tnh cot thep doc +Truong hop lech tam lon (x < o0h0) -Neu x > 2a` ( )( )0'S S'S 0Ne - h 0, 5xA A R h - a' -Neu x _2a` ( )'S S'S 0Ne'A A R h - a' Kiem tra lai ham luong min _ _ max (min = 0,4%; max = 3,5%) 'S S0A A 100b.hVa - t ( la ham luong tong cong) Neu khac nhieu voi t gia thiet th dung tnh lai Nth va q (A ch nen lay 0,25%) +Truong hop lech tam be (x > o0h0) -Neu qe0 _ 0,2h0 th DO AN TOT NGHIEP KSXD KHOA 2005-2010CC CAO CAP~ BNH THANH ~ TPHCM GVHD KET CAU : THAY MAI HA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 55 0 000, 5hx' h - 1, 8 - - 1, 4u qeh -Neu qe0 > 0,2h0 th ( )0 0 0 0ghx' 1, 8e - qe uh( )0 0 0ghe 0, 4 1, 25h - uh( )( )0 b'S SS 0Ne - Rbx' h - 0, 5x'A A R h - a' Kiem tra lai b) Ket qua tnh toan cot thep doc: COT b (cm) h (cm) ASX (cm2) X (%) (%)ASY (cm2) Y (%) (%)C1 - CHAN40402.880.4THOA5.880.81THOA Bang chon thep cot: COTFatt(cm2)ChonFac(cm2) (%)C1 - CHAN2x(2.88 + 5.88) = 17.5281820.361.41

c) Ket qua tnh toan thep dai cot: ieu kien tnh toan tiet dien nghieng theo luc cat : ( )n0 w1 0 b3 b bt b1 b b1 R bh Q0, 3. . ..R.bh Khoang cach giua hai cot dai theo tnh toan : ( )20 b2 b bt 2sw sw21 R bhns R .n.ad .Q Khoang cach lon nhat giua hai cot dai : 2n0 b2 b btmax(1 )R bhs Q Voi b2 = 2 , n = 0 , b = 1 , b3 = 0,6 Yeu cau cau tao cot dai duoc quy dinh nhu sau : DO AN TOT NGHIEP KSXD KHOA 2005-2010CC CAO CAP~ BNH THANH ~ TPHCM GVHD KET CAU : THAY MAI HA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 56 s.minwc15ds min 500 mm2bVoi ds.min - duong knh nho nhat cua cot doc bc - canh be nhat cua tiet dien cot Cau kien chiu nen ch dat cot dai khong co cot xien :

dbQQ Kha nang chiu cat cua betong va cot dai tai tiet dien nghieng nguy hiem nhat : 2n sw2 0 wb b btQ 2 (1 R bhq

Voi : sw wswR .n.Aq s ; 2swwdA a4 Trong do : n, dsw, Rsw - so nhanh, duong knh, cuong do cot dai. Ta co : Q = 46.39 (T) khong can phai tnh cot dai, betong cot du chiu cat at cot dai cau tao 6a200 cho ca phan cot thanh be va chan be. V.6.KIEM TRA DOVONG CHO CAC CAU KIEN HO NUOC: V.6.1CONG THUC TNH DO VONG: c 4 c 2 2 c 2q l q l l M lI x (cm)384B 24 16B 16B : doi voi dam, ban nap va ban day. c 4 c 2 2 c 25q l q l 5l 5M lI x (cm)384B 8 48B 48 B Trong mon hoc SBVL ta da biet : 1 Mr EI Trong do : 1r- do cong cua truc dam. EI - do cung cua dam voi vat lieu dan hoi, dong chat va dang huong. Nhungbetongcottheplavatlieudanhoi-deo,khongdongnhatvakhong dang huong thuong co vet nut trong mien keo nen khong the lay EI lam do cung cho dam. Thay do cung EI bang do cung B voi quan he nhu sau : DO AN TOT NGHIEP KSXD KHOA 2005-2010CC CAO CAP~ BNH THANH ~ TPHCM GVHD KET CAU : THAY MAI HA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 57 1 Mr B

Goi : f1 - do cong o giua nhip do tac dung ngan han cua toan bo tai trong f2 - do cong o giua nhip do tac dung ngan han cua tai trong dai han f3 - do cong o giua nhip do tac dung dai han cua tai trong dai han f = f1 - f2 + f3 : do vong cua dam Trong do do cung B: voi b = 0,9 va = 0,45; = 0,15(tai trong dai han); 0s bS S b b,redhZBEA vEA Tnh Z: 20Iz 1- h(cm)2( ) Tnh : 1 15(o )1,810u Voi: 'sI0A u2v bh ;20 b,serMo bhR; sbEu E;s0A bh; 'II0h 1-2h Tnh dien tch qui doi: Ab,red = (f + )bh0 (cm2) Tnh s : bt,ser plsls R W1, 25-MVoi ls = 1,1 - doi voi tai trong tac dung ngan han ls = 0,8 - doi voi tai trong tac dung dai han Neu s> 1 th lay a=1 Voi: 'so so 3 bopl bo2(I uI uI )W S (cm)h - x Trong do : 0x h; 2bobxI 3 ; 2so sI A(h - x - a) ; ' ' ' 2so sI A(x - a ) ; 2bob(h - x)S 2 V.6.2DO VONG CHO PHEP: o vong cho phep cua cau kien khi:L < 6m: [f] = L/200 L < 7.5m: [f] = 3cm L > 7.5m: [f] = L/250 V.6.3TAI TRONG: DO AN TOT NGHIEP KSXD KHOA 2005-2010CC CAO CAP~ BNH THANH ~ TPHCM GVHD KET CAU : THAY MAI HA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 58 Doi voi ban nap : qc = 357 + 75 = 432 (kG/m2) Doi voi ban day : qc = 618 + 2000 = 2618 (kG/m2) Doi voi ban thanh:Ap luc nuoc day ho : qcnuoc = 2000 (kG/m2) Ap luc gio hut: qcgio = 70 (kG/m2) Giai tuong tu nhu truong hop tai trong tnh toan, ta duoc ket qua noi luc sau: MA = - 0.25 (Tm)Mmax = 0.57 (Tm) Doi voi khung ho nuoc: TIET DIEN DAM TEN DAMb(cm)h(cm)h0(cm) VI TR M (Tm) DN204035BUNG 5.48 307065BUNG 20.74 DD1 307065GOI 13.82 305045BUNG 7.31 DD2 305045GOI 5.48 DD3305045BUNG 13.15 - Cuong do tieu chuan cua be tong M300: Rb,ser = 185 (kG/cm2); Rbt,ser= 16 (kG/cm2) - Mo dun dan hoi cua BT M300 va thep doc A-III: Eb = 2.9x105(kG/cm2) ;Es = 2,1x106 (kG/cm2) - Chieu cao lam viec cua dam: h0 = h - a(cm), a = 5cm (dam), a` = 1.5cm (ban nap); a` = 2cm(ban day) DO AN TOT NGHIEP KSXD KHOA 2005-2010CC CAO CAP~ BNH THANH ~ TPHCM GVHD KET CAU : THAY MAI HA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 59 DAMCAC DAC TRUNG DNDD1DD3 BAN DAY b(cm)203030100 h(cm)40705015 TIET DIEN h0(cm)35654513 L (m)5.68.45.24.4 Mc (Tm)6.7943.1320.161.255 As (cm2)6.0322.8115.203.92 A`s (cm2)5.4820.7414.6443.048 0.0930.2210.0910 0.0760.1470.0530.030 6.466.466.466.46 0.00490.01000.00330.0027 0.0930.2210.0910 0.1820.1780.1630.273 Ab,red192.99776.62343.37327.68 z32.8962.4342.6510.36 x6.3911.547.343.28 Ibo1736.5115378.783952.651172.83 Iso97.571047.23170.2328.18 I`so17.261136.7163.770.00 Sbo11298.7451258.8427299.586871.65 Wpl11298.7451258.8427299.586871.65 0.851.000.690.21 CAC BUOC TNH TRUNG GIAN B9.69E+091.67E+112.62E+104.05E+09 DO VONG f (cm)2.131.241.360.3 [f] (cm) gioi han2.243.362.082.2 NHAN XETTHOATHOATHOA THOA DO AN TOT NGHIEP KSXD KHOA 2005-2010CC CAO CAP~ BNH THANH ~ TPHCM GVHD KET CAU : THAY MAI HA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 60 V.7. KIEM TRA NUT CHO CAC CAU KIEN HO NUOC: a) Kiem tra nut cho ban day va ban thanh: - Theo TCVN 356 ~ 2005: Theo Qui dinh ve cap chong nut va be rong khe nut gioi han th be nuoc mai se co cap chong nut la cap 3 va be rong khe nut gioi han la: [acrc] = 0,25 mm. Thanh va day be duoc tnh theo cau kien chiu uon. Vet nut duoc tnh theo su hnh thanh vet nut thang goc voi truc doc cau kien. b) Co so l thuyet: Theo TCVN 365:2005 muc 7.2.2.1, be rong vet nut thang goc voi truc doc cau kien acrc duoc xac dinh theo cong thuc : ( )3 scrc1soa o q 203, 5-100 dETrong do : - he so lay doi voi : + Cau kien chiu uon va nen lech tam : bang 1,0 + Cau kien chiu keo : bang 1,2 ; 1 - he so, lay khi co tac dung cua : + Tai trong tam thoi ngan han va tac dung ngan han cua tai trong thuong xuyen va tai trong tam thoi dai han : 1,0 - he so lay nhu sau : + Voi cot thep thanh co go : 1,0 + Voi cot thep thanh tron tron : 1,3 + Voi cot thep soi co go hoac cap : 1,2 + Voi cot thep tron : 1,4 s - ung suat trong cac thanh cot thep lop ngoai cung duoc xac dinh theo cong thuc : SSMo Az

Trong do: M: Momen tieu chuan tac dung tren thanh ho trong 1 m chieu rong As: Dien tch cot thep DO AN TOT NGHIEP KSXD KHOA 2005-2010CC CAO CAP~ BNH THANH ~ TPHCM GVHD KET CAU : THAY MAI HA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 61 z: Khoang cach tu trong tam dien tch cot thep S den diem dat cua hop luc trong vung chiu nen cua tiet dien betong pha tren vet nut duoc xac dinh nhu sau:

'2IIoIhhoz h 1-2( ) h1 = 2a: doi voi cau kien chu nhat Chieu cao vung chiu nen tuong doi cua betong duoc tnh nhu sau: ( )I's,tot01, 51 +e15o 11, 5 +5 h10u So hang thu 2 cua cong thuc tren lay dau + khi co luc nen truoc, lay dau - khi co luc keo truoc, do tnh toan cho cau kien chiu uon nen so hang thu 2 nay bang 0. Trong do: - he so, lay nhu sau : oi voi betong nang va betong nhe: 1,8 oi voi betong hat nho: 1,6 oi voi betong rong va betong to ong: 1,4 '20 b,serMobhR 'II0h 1-2h abEu E S0A bh: ham luong cot thep es,tot - o lech tam cua luc doc N doi voi trong tam tiet dien cot thep, tuong ung voi no la momen M. (Do tnh theo cau kien chiu uon nen cho es,tot = 0). ( )' ' 'sI II0ub - bh A2vbhh'f = 2a` As`: dien tch cot thep cang truoc As` = 0 bf` : phan chieu cao chiu nen cua canh tiet dien chu I, T => bf` = 0 : He so dac trung trang thai dan hoi deo cua betong vung chiu nen, phu thuoc vao do am moi truong va tnh chat dai han cua tai trong. = 0,15 doi voi tai trong dai han. DO AN TOT NGHIEP KSXD KHOA 2005-2010CC CAO CAP~ BNH THANH ~ TPHCM GVHD KET CAU : THAY MAI HA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 62 = 0,45 doi voi tai trong ngan han trong moi truong co do am lon hon 40%. BAN DAYBAN THANH Canh ngan l1Canh dai l2Canh ngan l1Canh dai l2 CAC DAC TRUNG NhipGoiNhipGoiNhipGoiNhipGoi Rn (kG/cm2)130130130130130130130130 Es2.1x106 2.1x1062.1x1062.1x1062.1x1062.1x1062.1x1062.1x106 Eb (kG/cm2) 290000290000290000290000290000290000290000290000 6.466.466.466.466.466.466.466.46 b (cm)100100100100100100100100 h (cm)1515151512121212 a (cm)22222222 a' (cm)22222222 h1 (cm)66664444 hf' (cm)44443333 ho (cm)1212121210101010 As (cm2)3.927.853.925.232.52.792.52.79 Mtt (Tm)1.383.150.851.960.2850.6280.2850.628 Mtc (Tm)1.262.860.771.780.2590.570.2590.57 0.00330.00500.00330.00500.00250.00280.00250.0028 11111111 1 11 111111111 11111111 D (mm)8108108888 1.81.81.81.81.81.81.81.8 0.0390.1000.0420.0970.0160.0370.0160.037 f00000000 00000000 0.150.150.150.150.150.150.150.15 0.270.230.260.230.300.260.300.26 z (cm)10.3910.6210.4210.608.498.698.498.69 s(kG/cm2)2328.123446.342299.233370.931177.95 2349.971177.952349.97 acrc (mm)0.0590.1090.0580.1070.0220.0450.0220.045 [a] = 0,25THOATHOATHOATHOATHOATHOATHOATHOA Vaytiet dien da chon va bo thep nhu tren la phu hop. DO AN TOT NGHIEP KSXD KHOA 2005-2010CC CAO CAP~ BNH THANH ~ TPHCM GVHD KET CAU : THAY MAI HA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 63 CHUONG VI DAC TRUNG DONG HOC CONG TRNH VI .1. CO SO LY THUYET: MO HNH KHUNG KHONG GIAN CUA CONG TRNH Xem cong trnh la thanh consol co huu han khoi luong tap trung. Xet he gom mot thanh cong xon co n diem tap trung khoi luong co khoi luong tuong ung M1,M2,...Mn, phuong trnh vi phan tong quat dao dong cua he khi bo qua khoi luong thanh: [ ] [ ] [ ] ()'M.U CU KU Wt (1) Trong do: [M], [C], [K]: la ma tran khoi luong, can, do cung cua he. U, U, U : vector gia toc, van toc, dich chuyen cua cac toa do xac dinh bac tu do cua he. ( )'Wt :vector luc kch dong dat tai cac toa do tuong ung. DO AN TOT NGHIEP KSXD KHOA 2005-2010CC CAO CAP~ BNH THANH ~ TPHCM GVHD KET CAU : THAY MAI HA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 64 EJM11iiMEJnnMEJS0 B0 Thh ThAhh C0hS0L C0 huu hAh Kh0Lu0h0 TAF TRuh0Tan so va dang dao dong rieng cua he duoc xac dinh tu phuong trnh vi phan thuan nhat khong co can (Bo qua he so can C): [ ] [ ] M.U KU 0

(2) Gia thiet:[ ] U ysinet(3) [ ]2U - e ysinet

Suy ra: [ ] [ ] [ ] [ ]2K. y .sinet- M.e ysinet 0[ ] [ ] [ ]2(K- M.e). y 0 (4) Trong do :

12nmmM ... mla ma tran khoi luong 11 12 1n21 222nn1 n2nnkk... kkk... k K ... ... ... ... kk... k la ma tran do cung Voi: ijij1k o ieu kien ton tai dao dong la phuong trnh ton tai nghiem khong tam thuong : y 0 do do phai thoa man dieu kien: [ ] [ ]2K- M.e 0(5) co nghiem khong tam thuong, do do phai thoa man dieu kien : ( )2 2 211 1 i 12 2 i 1n n i2 2 22 21 1 i 22 2 i 2n n ii2 2 2n1 1 i n2 2 i nn n io m e-1o m e-1 ... o m e-1o m e-1o m e-1 ... o m e-1De 0 ... ... ... ... o m e-1o m e-1 ... o m e-1(6) Trong do : ijo : Chuyen vi tai diem do luc don vi dat tai diem I gay ra i: Tan so vong cua dao dong rieng (Rad/s) Phuong trnh (6) la phuong trnh dat trung, tu phuong trnh tren co the xac dinh n gia tri thuc,duong cua i . Thay cac gia tri ivao phuong trnh (4) se xac dinh duoc cac dang dao dong rieng. Voi N > 3, viec giai bai toan tren tro nen cuc ky phuc tap, khi do tan so va dang dao dong duoc xac dinh bang cach giai tren may tnh hoac bang cac phuong phap gan dung hoac cong thuc thuc nghiem (phuong phap thay the khoi luong, phuong phap khoi luong tuong duong, phuong phap dung dan, phuong phap sai phan). Mot trong nhung chuong trnh may tnh ho tro tnh toan tan so va dang dao dong theo dung ly thuyet duoc trnh bay o tren laETABS voi Modul EigenVector Analysis. DO AN TOT NGHIEP KSXD KHOA 2005-2010CC CAO CAP~ BNH THANH ~ TPHCM GVHD KET CAU : THAY MAI HA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 65 VI.2 . TNH TOAN CAC DANG DAO DONG RIENG: Ap dung ly thuyet tren chia cong trnh thanh 18 khoi luong tap trung ung voi cac so tang. Toan bo cac ket cau chiu luc cua cong trnh duoc mo hnh hoa dang khong gian 3 chieu, su dung cac dang phan tu khung (frame) cho cot, dam va phan tu tamvo (shell) cho san va vach cung.Tnh toan chu k dao dong rieng va dang dao dong rieng cho 8 dang dao dong rieng dau tien. Khoi luong tap trung duoc khai bao khi phan tch dao dong theo TCXD229:1999 la 100% tnh tai va 50% hoat tai. VI.3. BANG KHOI LUONG VA TAM KHOI LUONG TUNG TANG StoryDiaphragmMassXMassYXCMYCM LAU 15D1761.519961.519914.26312.1 LAU 14D1663.844763.844714.26312.1 LAU 13D1563.844763.844714.26312.1 LAU 12D1463.844763.844714.26312.1 LAU 11D1364.070764.070714.26312.1 LAU 10D1264.375864.375814.26312.1 LAU 9D1164.375864.375814.26312.1 LAU 8D1064.375864.375814.26312.1 LAU 7D964.80664.80614.26312.1 LAU 6D865.35965.35914.26412.1 LAU 5D765.35965.35914.26412.1 LAU 4D665.969265.969214.26812.104 LAU 3D566.636666.636614.26912.105 LAU 2D466.636666.636614.26912.105 LAU 1D367.776267.776214.26512.101 TRETD256.924556.924514.25912.1 HAM 2D156.412956.412914.2612.1 VI.4.BANGCHUKYDAODONGRIENGVAHESOTHAMGIAKHOI LUONG HUU HIEU CUA TUNG DAO DONG ModePeriodUXUYUZSumUXSumUYSumUZ 11.6759220.95364.772500.95364.77250 21.64734767.83080.9091068.783765.68170 31.3035520.00610.0259068.789965.70760 40.45041915.32710.0002084.116965.70770 50.3739120.000418.977084.117384.68470 60.3234620.00020.0666084.117584.75130 70.1993766.05410090.171684.75130 80.16010306.2264090.171690.97760 DO AN TOT NGHIEP KSXD KHOA 2005-2010CC CAO CAP~ BNH THANH ~ TPHCM GVHD KET CAU : THAY MAI HA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 66 Theo tieu chuan xay dung Viet Nam ve tnh toan thanh phan dong cua tai trong gio TCXD229:1999, ta ch thuc hien tnh toan cho nhung mode co tan so thoa dieu kien f fL,. Chu k rieng la mot ch tieu tong hop co ban.Gia tri chu k rieng hop l theo cong thuc kinh nghiem la:T = (0,09-0,1).n voi n la so tang nha oi voi cong trnh nay la he ket cau khung vach 18 tang nen chu k dao dong rieng hop l se la T = 1,62 - 1,8.Nhu vay cong trnh co do cung EJ hop l. DO AN TOT NGHIEP KSXD KHOA 2005-2010CC CAO CAP~ BNH THANH ~ TPHCM GVHD KET CAU : THAY MAI HA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 67 CHUONG VII TAI TRONG GIO TAC DUNG LEN CONG TRNH VII.1. THANH PHAN TNH: Ap luc gio:cj o(zi)WW . k. c

tt cj j ixxW .S W .voi Six = Dx . h

tt cj j iyyW .S W .voi Siy = Dy . h Trong do: W0 : Gia tri ap luc gio Tieu Chuan. Cong trh xay dung o TPHCM thuoc vung II-A, dang dia hnh B .(Tra Bang TCVN 2737-1995 ). Ta duoc:20) W83 (KG/cmk(z) : He so tnh den su thay doi ap luc gio theo do cao , dia hnh (Tra bang 7TCXD 229 - 1999 trang 13 ), chon dia hnh B c:Hesokhdong:phadongio: C0,8d; C- 0, 6h-> C 0,8 0, 6 1, 4Six ; Siy : Dien tch mat don gio theo phuong X va Y . he so tin cay 1.2 h : chieu cao 1 tang nha(m) D: Be rong cong trnh theo tung phuong (Dx = 28.6m, Dy = 24.2m) AP LUC GIO VA LUC GIO TNH TAC DUNG LEN TANG NHA Tang Cao do z hj (m) c k Wjc(T/m2) Six WjttX (T) Siy WjttY

(T) Tret1.23.81.40.3200.037108.684.84991.964.103 L153.41.40.8800.10297.2411.93282.2810.096 L28.43.41.40.9620.11297.2413.04482.2811.037 L311.83.41.41.0290.12097.2413.95282.2811.806 L415.23.41.41.0820.12697.2414.67182.2812.414 L518.63.41.41.1160.13097.2415.13282.2812.804 L6223.41.41.1480.13397.2415.56682.2813.171 L725.43.41.41.1790.13797.2415.98682.2813.527 L828.83.41.41.2090.14097.2416.39382.2813.871 L932.23.41.41.2330.14397.2416.71882.2814.146 L1035.63.41.41.2540.14697.2417.00382.2814.387 L11393.41.41.2740.14897.2417.27482.2814.617 L1242.43.41.41.2930.15097.2417.53282.2814.835 L1345.83.41.41.3150.15397.2417.83082.2815.087 L1449.23.41.41.3350.15597.2418.10182.2815.317 L1552.63.41.41.3500.15748.629.15341.147.745 DO AN TOT NGHIEP KSXD KHOA 2005-2010CC CAO CAP~ BNH THANH ~ TPHCM GVHD KET CAU : THAY MAI HA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 68 VII.2. THANH PHAN DONG: Thanh phan dong duoc tnh toan theo TCXD 229:1999. Ta co gia tri gioi han cua tang so dao dong rieng fL ung voi gio vung II va do giam loga cua = 0,3ung voi cong trnh betong cot thep: fL = 1.3 Chon nhung tang so thoa dieu kien : f S < fL < fs+l Ta co f = 1/ T voi T la chu k rieng da tnh. MODECHU KT(s) TAN SO f (Hz) NHAN XET 11.6760.597THOA 21.6470.607THOA 31.3040.767THOA 40.4502.222KHONG Theo phan tch dong hoc o tren ta co : f3 = 0.767 < fL= 1.3< f4 = 2.222 V vay can tnh toan thanh phan dong cua gio ung voi 3 dang dao dong dau tien. DO AN TOT NGHIEP KSXD KHOA 2005-2010CC CAO CAP~ BNH THANH ~ TPHCM GVHD KET CAU : THAY MAI HA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 69 VII.3.XAC DINH CHUYEN VI T DOI CUA 3 DANG DAO DONG DAU TIEN ( tnh theo TCXDVN 229:1999) Cong thuc :* * * *ij i j i j i j i jiysinu - shu - B (cosu - chu ) Voi 3 dang dau tien, ta co: 1 = 1.875; 2 = 4.694; 3 = 7.86 B1 = 1.365; B2 = 0.98; B3 = 1

j *jh H ;H = 52.6 (m) BANG CHUYEN VI TY DOI CUA TUNG TANG NHA CUA CAC DANG DAO DONG Chuyen dich ty doi Tang Cao do yj1yj2yj3 Tret1.20.02280.0020.0110.030 L150.09510.0420.1660.420 L28.40.15970.1130.4110.925 L311.80.22430.2170.7001.344 L415.20.28900.3480.9851.512 L518.60.35360.5031.2191.352 L6220.41830.6801.3670.881 L725.40.48290.8741.4020.208 L828.80.54751.0821.310-0.506 L932.20.61221.3021.089-1.086 L1035.60.67681.5310.746-1.387 L11390.74141.7660.298-1.335 L1242.40.80612.005-0.232-0.944 L1345.80.87072.247-0.816-0.314 L1449.20.93542.491-1.4340.396 L1552.61.00002.734-2.0661.006 DO AN TOT NGHIEP KSXD KHOA 2005-2010CC CAO CAP~ BNH THANH ~ TPHCM GVHD KET CAU : THAY MAI HA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 70 Hnh dang cua 3 dang dao dong: 0 0 h 10102030405060700 2 4yj1h(m)0 0 h Z010203040506070-2 0 2yj2h(m) 0 0 h 8010203040506070-2 0 2yj3h(m) HNH DANG 3 DANG DAO DONG CO BAN Gia tri tnh toan thanh phan dong cua tai trong gio tac dung len phan thu (co cao do z ) ung voi dang dao rieng thu i duoc xac dinh theo cong thuc (4.10) TCXD229:1999 ( )ttP(ji) j i i jiW Mx x x yx Trong do : M - Khoi luong tap trung cua phan cong trnh thu . i - He so dong luc ung voi dang dao dong thu i. yi - Dich chuyen ngang t doi cua trong tam phan cong trnh thu ung voi dang dao dong thu i. i-hesoduocxacdinhbangcachchiacongtrnhthanhnphan,Trongphamvi moi phan tai trong gio co the coi nhu khong doi . = 1.2 - he so do tin cay cua gio = 1 - he so dieu chnh tai trong theo thoi gian (t = 50 nam) VII.4. XAC DINH KHOI LUONG TAP TRUNG PHAN C.TRNH THU J: MI

Lay ket qua xuat ra tu bang Center Mass Rigidity cua ETABS ta duoc khoi luong tung tang duoc the hien trong bang khoi luong va tam khoi luong trong phan ket qua dao dong rieng o phan truocDO AN TOT NGHIEP KSXD KHOA 2005-2010CC CAO CAP~ BNH THANH ~ TPHCM GVHD KET CAU : THAY MAI HA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 71 VII.5 . XAC DINH HE SO : ( )( )nji Fjj1n i2ji jj1yx Wyx M He so I duoc xac dinh theo cong thuc:Trong do:WF :Gia tri tieu chuan thanh phan dong cua tai trong gio tac dung len phan thu cua cong trnh, ung voi cac dang dao dong khac nhau khi ch ke den anh huong cua xung van toc gio, duoc xac dinh theo cong thuc: Fj j i jWWx x u x STrong do :Wc : Gia tri tieu chuan cua gio tnh da tnh o bang tren. S : dien tch don gio ung voi phan thu i : He so ap luc dong cua tai trong gio o do cao z ung voi phan thu cua congtrnh.Phuthuocvaodang diahnhvachieucaoz.(Trabang3TCXD 229 - 1999) :Hesotuongquankhonggianaplucdongcuataitronggioduocxac dinh phu thuoc vao vao tham so : & va dang dao dong. (Trang 9 TCXD 229-1999) Theo bang 5 - trang 9 TCXD 229-1999, ta co: = D & = H Theo mat don gio zox: = 28.6m & = 52.6m Theo mat don gio zoy: = 24.2m & = 52.6m HE SO PHUONG 1 1 1 12 2 2 23 3 3 3 X0.68911 Y0.70211 D : Chieu dai cua mat don gio ung voi phan thu ; H : Chieu cao cua mat don gio ung voi phan thu ; L : Chieu rong cua mat don gio ung voi phan thu ; DO AN TOT NGHIEP KSXD KHOA 2005-2010CC CAO CAP~ BNH THANH ~ TPHCM GVHD KET CAU : THAY MAI HA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 72 THANH PHAN DONG CUA GIO

WjF = Wjc. (j . .Sj (T/m)Tang Cao do z(m) hj(m) Wjc (T/m) (j Sjx (m) Sjy (m) Phuong XPhuong Y Tret1.23.80.0370.517108.6891.961.4321.235 L153.40.1020.51797.2482.283.5333.046 L28.43.40.1120.49697.2482.283.7223.209 L311.83.40.1200.48197.2482.283.8673.334 L415.23.40.1260.47197.2482.283.9763.428 L518.63.40.1300.46197.2482.284.0153.462 L6223.40.1330.45497.2482.284.0453.488 L725.43.40.1370.44997.2482.284.1213.553 L828.83.40.1400.44597.2482.284.1743.598 L932.23.40.1430.44097.2482.284.2163.634 L1035.63.40.1460.43597.2482.284.2553.668 L11393.40.1480.43097.2482.284.2643.676 L1242.43.40.1500.42797.2482.284.2913.700 L1345.83.40.1530.42597.2482.284.3573.756 L1449.23.40.1550.42297.2482.284.3823.778 L1552.63.40.1570.42048.6241.142.2091.905

VII.6. XAC DINH HE SO I i la he so dong luc ung voi dang dao dong thu i, phu thuoc vao thong so i va dogiam loga cua dao dong (uong cong 1 ung voi = 0,3). Trong do: 0iiWc 940I = 1.2 la he so tin cay cua tai trong gio W0 = 830 N/m2

fi :la tan so dao dong rieng thui DO AN TOT NGHIEP KSXD KHOA 2005-2010CC CAO CAP~ BNH THANH ~ TPHCM GVHD KET CAU : THAY MAI HA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 73 He so dong luc i

Dang dao dongf1 (Hz) i i 10.5971.660.0561 20.6071.620.0553 30.7671.580.0438 VII.7.THANHPHANDONGCUATAITRONGGIOTACDUNGLEN CONG TRNH Theo tieu chuan muc 4.6 trang 11 TCXD 229-1999,cong trnh co mat bang doi xung th anh huong cua dang dao dong thu nhat den gia tri thanh phan dong cua tai trong gio la chu yeu.V vay ta co the xac dinh gia triWp (1)tt thanh phan dong tai trong gio theo cong thuc: WttP(j1) = (Mj . 1 . 1 . yj1). BANG TNH HE SO iMode 1 Phuong XPhuong YTang yj1 (m) Mj (T) yj1.WXFiy2j1.Mjyj1.WYFiy2j1.Mj Tret0.00256.92450.0030.0000.0020.000 L10.04267.77620.1480.1200.1280.120 L20.11366.63660.4210.8510.3630.851 L30.21766.63660.8393.1380.7233.138 L40.34865.96921.3847.9891.1937.989 L50.50365.35902.02016.5361.74116.536 L60.68065.35902.75130.2222.37230.222 L70.87464.80603.60249.5043.10549.504 L81.08264.37584.51675.3663.89475.366 L91.30264.37585.489109.1304.732109.130 DO AN TOT NGHIEP KSXD KHOA 2005-2010CC CAO CAP~ BNH THANH ~ TPHCM GVHD KET CAU : THAY MAI HA SAN GVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 74 L101.53164.37586.515150.8945.616150.894 L111.76664.07077.530199.8216.492199.821 L122.00563.84478.604256.6577.418256.657 L132.24763.84479.789322.3528.439322.352 L142.49163.844710.916396.1629.411396.162 L152.73461.51996.039459.8465.208459.846 Tong70.5662247.46570.5662078.589 i0.03140.0340 DO AN TOT NGHIEP KSXD KHOA 2005 ~ 2010CC CAO CAP ~ BNH THANH ~ TPHCM GVHD KET CAU : THAY MAI HA SANGVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 76 BANG TNH Wttp(j1) WttP(ij) = (Mj . I . i . yji). (T/m2) Phuong XPhuong YTang yj1 (m) Mj (T) ix Wttx iyWtty Tret0.00263.95840.03140.0070.0340.008 L10.04276.94980.03140.1780.0340.193 L20.11375.70150.03140.4710.0340.510 L30.21775.45670.03140.9040.0340.979 L40.34874.92280.03141.4360.0341.555 L50.50373.97220.03142.0560.0342.227 L60.68073.55970.03142.7800.0343.010 L70.87473.1020.03143.5430.0343.836 L81.08272.30390.03144.3570.0344.718 L91.30271.96770.03145.2430.0345.677 L101.53171.96770.03146.1650.0346.675 L111.76671.24310.03147.0770.0347.663 L122.00570.68090.03148.0070.0348.670 L132.24770.68090.03148.9730.0349.716 L142.49170.68090.03149.9480.03410.771 L152.73456.81510.031410.5200.03411.392 DO AN TOT NGHIEP KSXD KHOA 2005 ~ 2010CC CAO CAP ~ BNH THANH ~ TPHCM GVHD KET CAU : THAY MAI HA SANGVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 77 VII.8. KET QUA TAI GIO TAC DONG LEN CONG TRNH THEO TUNGPHUONG Ta co bang ket qua ap luc gio len cong trnh nhu sau: Gio tinh Wt (T)Gio dong Wp (T)(Wp / Wt) * 100 %(Wp+Wt) (T) Tang Phuong X Phuong Y Phuong X Phuong Y Phuong X Phuong Y Phuong X Phuong Y Tret4.8494.1030.0070.0080.150.194.8564.111 L111.93210.0960.1780.1931.491.9112.11010.289 L213.04411.0370.4710.5103.614.6213.51511.547 L313.95211.8060.9040.9796.488.3014.85612.785 L414.67112.4141.4361.5559.7912.5216.10713.969 L515.13212.8042.0562.22713.5917.3917.18815.031 L615.56613.1712.7803.01017.8622.8518.34616.181 L715.98613.5273.5433.83622.1628.3619.52917.363 L816.39313.8714.3574.71826.5834.0120.75018.589 L916.71814.1465.2435.67731.3640.1321.96119.823 L1017.00314.3876.1656.67536.2646.4023.16821.062 L1117.27414.6177.0777.66340.9752.4324.35122.280 L1217.53214.8358.0078.67045.6758.4425.53923.505 L1317.8315.0878.9739.71650.3364.4026.80324.803 L1418.10115.3179.94810.77154.9670.3228.04926.088 L159.1537.74510.52011.392114.94147.0819.67319.137 235.136198.96371.66577.599476.186609.354306.801276.562 DO AN TOT NGHIEP KSXD KHOA 2005 ~ 2010CC CAO CAP ~ BNH THANH ~ TPHCM GVHD KET CAU : THAY MAI HA SANGVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 78 CHUONG VIII THIET KE HE KHUNG TRUC D VIII .1 THIET KE DAM: VIII.1.1 NOI LUC VA TO HOP NOI LUC : Xem bang phu luc ve Noi luc va to hop noi luc phuc vu cho viec tnh toan. Chon noi luc to hop bao de tnh toan dam VIII.1.2 TNH TOAN CAU KIEN CHIU UON TIET DIEN CHU NHAT: -Dam chnh co kch thuoc la 300x700. Chon a = 6 cm => h0 = h - a = 70 - 6 = 64 (cm) -Vat lieu su dung : Betong M300:Rb = 130 (kG/cm2), Rbt = 12 (kG/cm2) Thep AIII ( 10):Rs = Rs` = 3600 (kG/cm2),Rsw = 2800 (kG/cm2),Thep AI ( < 10): Rs = Rs` = 2300 (kG/cm2),Rsw = 1800 (kG/cm2). a. Tnh cot doc: m20 b bMu .R.bh(1) ho: Chieu cao tu trong tam cot thep chiu keo den mep dam (pha doi dien) m 1- 1- 2u (2) 0 bSSRbhA R(3) Voi dat buoc dai 300 mm. VIII.1.3 KET QUA TNH TOAN VA BO TR THEP: V khung doi xung nen ch can tnh toan cac dam B2(nhip 2 -3) , B4(nhip 3-4) , B57(dam consol) Xem chi tiet o phu luc tnh toan va tren ban ve.DO AN TOT NGHIEP KSXD KHOA 2005 ~ 2010CC CAO CAP ~ BNH THANH ~ TPHCM GVHD KET CAU : THAY MAI HA SANGVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 80 a)Ket qua tnh cot thep doc: BANG TNH COT THEP DAM B57 TangVi trb (cm) h (cm) a (cm) M (kGcm) ho (cm) om As (cm2) ChonAs chon (cm2) (%) max (%) Lau 15Goi30405-211000350.0440.0451.7132 164.0200.3832.094 Lau 14Goi30405-191000350.0400.0411.5472 164.0200.3832.094 Lau 13Goi30405-193000350.0400.0411.5642 164.0200.3832.094 Lau 12Goi30405-195000350.0410.0421.5812 164.0200.3832.094 Lau11Goi30405-169000350.0350.0361.3662 164.0200.3832.094 Lau 10Goi30405-159000350.0330.0341.2842 164.0200.3832.094 Lau 9Goi30405-160000350.0330.0341.2922 164.0200.3832.094 Lau 8Goi30405-161000350.0340.0341.3002 164.0200.3832.094 Lau 7Goi30405-142000350.0300.0301.1442 164.0200.3832.094 Lau 6Goi30405-135000350.0280.0291.0872 164.0200.3832.094 Lau 5Goi30405-137000350.0290.0291.1032 164.0200.3832.094 Lau 4Goi30405-122000350.0260.0260.9812 164.0200.3832.094 Lau 3Goi30405-118000350.0250.0250.9482 164.0200.3832.094 Lau 2Goi30405-119000350.0250.0250.9572 164.0200.3832.094 Lau 1Goi30405-112000350.0230.0240.9002 164.0200.3832.094 DO AN TOT NGHIEP KSXD KHOA 2005 ~ 2010CC CAO CAP ~ BNH THANH ~ TPHCM GVHD KET CAU : THAY MAI HA SANGVHD THI CONG : THAY TRINH TUAN SVTH : NGUYEN XUAN THINH ~ MSSV : X052200 81 BANG TNH COT THEP DAM B4 TangVi trb (cm) h (cm) a (cm) M (kGcm) ho (cm) om As (cm2) ChonAs chon (cm2) (%)max (%) Goi A30706-769000640.0480.0493.4224168.0400.422.094 Nhip AB307062384000640.1490.1409.6732 16+31811.6500.61