xaydung360.vn sv- du toan xay dung cong thuc bql
TRANSCRIPT
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8/13/2019 Xaydung360.Vn SV- Du Toan Xay Dung Cong Thuc BQL
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CNG THCNG THTNH TIN LTNH TIN L
11. Cng th. Cng th c tnh hnh phc tnh hnh ph ngng
negis
tered
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CNG THCNG TH
TNH TIN LTNH TIN L
11. Cng th. Cng th c tnh hnh phc tnh hnh ph ngng
an c
bdt = a x b
cv = (a+b)x2negis
tered
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CNG THCNG TH
TNH TIN LTNH TIN L
11. Cng th. Cng th c tnh hnh phc tnh hnh ph ngng
n am g c
h
a
dt= a x h
2Chu vi= a+b+c
cb
negis
tered
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CNG THCNG TH
TNH TIN LTNH TIN L
11. Cng th. Cng th c tnh hnh phc tnh hnh ph ngng
n am g c
h
a
dt= a x h
2 negis
tered
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11. Cng th. Cng th c tnh hnh phc tnh hnh ph ngngHnh tam gic vung
2
=2
+2
a
cb
c = a2 + b2
negis
tered
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CNG THCNG TH
TNH TIN LTNH TIN L
11. Cng th. Cng th c tnh hnh phc tnh hnh ph ngng
n am g c
h
a
dt= a x h
2 negis
tered
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CNG THCNG TH
TNH TIN LTNH TIN L
11. Cng th. Cng th c tnh hnh phc tnh hnh ph ngng
a
n ang
hdt= (a+b)xh
2
bn
egistere
d
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22. Cng th. Cng th
dtxq= ( xd)xhd
h
= x x
4
V= ( x r2
)xh
negistere
d
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22. Cng th. Cng th
negis
tered
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negis
tered
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22. Cng th. Cng th
aa
xq x x
a
V= axaxanegis
tered
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22. Cng th. Cng th
= + h
a
V= a x b x hb
negistere
d
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V= L x h x bn
egistere
d
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V= L x h x bn
egistere
d
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bbc i
L
Vkx= (L x h - bc ix hc i - b x h ) x b
negistere
d
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e
h
b
V= L x (( bxe+2 x (h-e)xe)
V= L x e x ( b+2 x (h-e))
negistere
d
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e
b
V= L x (( b-2xe)xe+2xhxe)V= L x e x (( b-2xe)+2xh)
V= L x (( bxh-(b-2xe)x(h-e))
negistere
d
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V= L x h x b2
negis
tered
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22. Cng th. Cng th
3
S= AxB
s= axb negis
tered
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22. Cng th. Cng thchp
V= h(S1+S2+4S3)6
S1= AxB
S2= axb t d i)
t trn)
S3= (a+A)x(b+B)2 2
u S1 v S2)
negis
tered
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y
V= h.[A.B+a.b+(a+A).(b+B)]6
S1= AxB
S2= axb
negis
tered
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negis
tered
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33. Cng th. Cng th c tnh khc tnh kh i li l ngng
Kh i l ng = th ch x kh i l ng ring
(Kg) (m3) (Kg/m3)
Kh i l ng= di n tch ) y vt thx chi u cao (chiu di)
x kh i l ng ring
Kh i l ng= ti t di n vt thx chi u cao (chiu di) x kh i l ng ring
negistere
d
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33. Cng th. Cng th c tnh khc tnh kh i li l ngng
V t th s t thp c kh i l ng ring :
7850 kg/m3
V t th btn c t th c kh i l n rin : 2500 kg/m3
V t th nhm (Al)c kh i l ng ring :
2600-2700 kg/m3
V t th m (Zn) c kh i l ng ring :
7000 kg/m3negis
tered
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33. Cng th. Cng th c tnh khc tnh kh i li l ngng
V t th ! ng (Cu) c kh i l ng ring :
8900 kg/m3
V t th n Au c kh i l n rin :19300 kg/m3
negis
tered
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ng knh ngoi (D) (m)
Kh i l ng = 3.14 x D2x chi u di thanh L x kh i l ng ring
4
(Kg) (m3) (Kg/m3)
(m)(m2)negis
tered
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33. Cng th. Cng th c tnh khc tnh kh i li l ngng
a
Kh i l ng = a x a xchi u di thanh L xkh i l ng ring
a
(Kg)(m3) (Kg/m
3)
(m)(m2)negis
tered
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33. Cng th. Cng th c tnh khc tnh kh i li l ngng
ng knh trong (d) (m)
ng knh ngoi (D) (m)
ng knh trung bnh (dtb) (m)
Chi u dy ng e (m) = D - d
e
Kh i l ng = 3.14 x dtb x e x chi u di ng L x kh i l ng ring
(Kg) (m3) (Kg/m3)
Dtb = D-e = d+e
(m)(m2)negis
tered
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33. Cng th. Cng th c tnh khc tnh kh i li l ngng
negis
tered
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33. Cng th. Cng th c tnh khc tnh kh i li l ngng
(A) (m) ng tim (tb) (m)
Chi u dy e (m) = A - a2
(a) (m)
(B)(m)
e
Kh i l ng = [(A e )+(B - e)]*2 x e x chi u di ng L x kh i l ng ring
Kh i l ng = (A e )*4 x e x chi u di ng L x 7850
(Kg) (m3) (Kg/m3)negis
tered
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33. Cng th. Cng th c tnh khc tnh kh i li l ngng
negis
tered
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33
(0,1) (m) ng tim (tb) (m)
Chi u dy e (m) = A - a = 0,1-0,0952
(0.095) (m)
,20)(m)
e = 0,0025 = 2,5 mm
2
11,578= [(0,1 0,0025 )+(0,2 0,0025)]*2 x 0.0025 x 1 x 7850
7,654 = (0,1 0,0025)*4 x 0,0025 x 1 x 7850
(
(Kg) (m3) (Kg/m3)
ng (chi u di ng L)negis
tered
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negis
tered
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negis
tered
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negis
tered
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negis
tered
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negis
tered
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negis
tered