reinforced concrete structureshaluk/rc/lbsd_week6_hs.pdfbetonarme yapılar taşıyıcı sistem...
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![Page 1: Reinforced Concrete Structureshaluk/rc/LBSD_week6_HS.pdfBetonarme Yapılar Taşıyıcı Sistem Düzenleme İlkeleri (kiriúli) (a ) deroeve 1 (a ) deroeve (kiriúsiz) 2 Kiriúli) (c](https://reader030.vdocuments.net/reader030/viewer/2022040109/5e414d988b5839543b4d497d/html5/thumbnails/1.jpg)
LATERAL LOAD RESISTING SYSTEMSTALL BUILDINGS
Reinforced Concrete StructuresMIM 232E
LBSD-5
Dr. Haluk SesigürI.T.U. Faculty of Architecture
Structural and Earthquake Engineering WG
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• High Rise Bldgs, h>20~40m
• Lateral loads are more effective (rather than vertical loads)• The most important lateral load is EQ effect for RC
• RC, Steel or Composite
• Optimum solution;LBS+Arch.+Installation etc.
• Alternative solutions are prepared and investigated
High Rise BuildingsDesign under Lateral loads General
RC_LBSD_6 2
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• Additional problems due to increase of the heigth
• Principle;Resistance against lateral loadsTransferring vertical loads to soil, safely.
• Special design is required for vertical/lateral load carrying, installation etc.
• Site selection; depends on weather and soil condition etc.
• For areas with heavy wind ; this effect should be considered precisely
High Rise BuildingsDesign under Lateral loads General
RC_LBSD_6 3
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• There is an installation storey (in almost all high rise building)
• Arch. Project; aesthetics and compatible with function
• LBS; compatible with installation
• Multi-diciplinary work
High Rise BuildingsDesign under Lateral loads General
RC_LBSD_6 4
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High Rise Steel buildings;
• End of 19th Century; 118 m (Park Row. New York)• 1913; 242 m (Woolworth Bld., New York)• 1929; 313m (Chrysler)• 1931; 381m (Empire state)• 1972; 415m (World Trade Center)• 1975; 445m (Chicago Sears)
High Rise BuildingsDesign under Lateral loads History
RC_LBSD_6 5
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• RC high rise buildings; ~1960s
• Development of RC High Rise Bldgs;
By new material tech., high-strength concrete, new formwork techs.
• In Turkey; 1950; 40m1958; 80m1987; 176m (Mersin)2011; 234m (Sapphire, İstanbul)2014; 200m (Folkart towers, İzmir)
High Rise BuildingsDesign under Lateral loads History
RC_LBSD_6 6
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High Rise BuildingsDesign under Lateral loads LBS types
RC_LBSD_6 7
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High Rise BuildingsDesign under Lateral loads LBS types
RC_LBSD_6 8
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Frame LBS (Moment Resisting Frame; column+beam)
High Rise BuildingsDesign under Lateral loads LBS types
http://www.nexus.globalquakemodel.org/gem-building-
taxonomy/overview/glossary/moment-frame--lfm
RC_LBSD_6 9
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High Rise BuildingsDesign under Lateral loads LBS types
RC_LBSD_6 10
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High Rise BuildingsDesign under Lateral loads LBS types
RC_LBSD_6 11
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High Rise BuildingsDesign under Lateral loads LBS types
RC_LBSD_6 12
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High Rise BuildingsDesign under Lateral loads LBS types
RC_LBSD_6 13
Lateral loads at the top are resisting by frames whereas the loads acting at the
Bottom are resisting by shear walls.
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• Different displacement (behavior) of frame and SW
Frame SW
High Rise BuildingsDesign under Lateral loads Frame+Shear Wall system
Frame+ SW
RC_LBSD_6 14
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• Up to 1960s, Frame+Shear wall LBS
High Rise BuildingsDesign under Lateral loads LBS types
RC_LBSD_6 15
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Frame+Shear wall + (Core) LBS
High Rise BuildingsDesign under Lateral loads LBS types
http://theconstructor.org/structural-engg/shear-walls-structural-
forms-positioning/6235/
RC_LBSD_6 16
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• 1964; Fazlur Khan-a basic calculation method for frame+shear wall LBS
High Rise BuildingsDesign under Lateral loads LBS types
Beck; coupled shear wall (SW)
http://theconstructor.org/structural-engg/shear-walls-structural-
forms-positioning/6235/
RC_LBSD_6 17
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• Use of tubes arranged by surrounding frames (Hohlkasten system)
3D LBS model
High Rise BuildingsDesign under Lateral loads LBS types
RC_LBSD_6 18
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• High Rise Bldgs large column CS
solution: High strength concrete
• Fc > 42Mpa
• 1962; Chicago 1000 Lake Shore; 41.4Mpa• 1988; Seatle P.F.C. ; 131 Mpa
• It is expensive; but more economical compared to total cost for
high rise buildings
High Rise BuildingsDesign under Lateral loads High Strength Concrete
RC_LBSD_6 19
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• Rapid construction
• However; strength brittleness
(should be considered)
• High strength concrete;generally used for only bottom levels
High Rise BuildingsDesign under Lateral loads High Strength Concrete
RC_LBSD_6 20
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a) 2D members;moment resisting frameshear wallcoupled shear wallsMR frame + shear wall system
b) 3D members;Tube-frameCore
Lateral load resisting members:
High Rise BuildingsDesign under Lateral loads Lateral load resisting members
RC_LBSD_6 21
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Betonarme Yapılar
Taşıyıcı Sistem Düzenleme İlkeleri
(kirişli)
(a ) Çerçeve1
(a ) Çerçeve
(kirişsiz)2
Kirişli)
(c ) Çekirdek
(Vierendeel3
kafes kiriş
(c ) Çekirdek+yatay5
perde
(c ) Çekirdek+ (d ) İç içe 1
tüp +dış tüp
(d ) Çekirdek2
(b) Perdeli
çerçeve konsol
(c ) Çekirdek+21
(c ) Çekirdek+
döşemeli
4
Frame: Column+Beam
(kirişli)
(a ) Çerçeve1
(a ) Çerçeve
(kirişsiz)2
Kirişli)
(c ) Çekirdek
(Vierendeel3
kafes kiriş
(c ) Çekirdek+yatay5
perde
(c ) Çekirdek+ (d ) İç içe 1
tüp +dış tüp
(d ) Çekirdek2
(b) Perdeli
çerçeve konsol
(c ) Çekirdek+21
(c ) Çekirdek+
döşemeli
4
Shear Wall: In CS; rectangularcantilever members withb/h>1/7 and havingvertical axis
(kirişli)
(a ) Çerçeve1
(a ) Çerçeve
(kirişsiz)2
Kirişli)
(c ) Çekirdek
(Vierendeel3
kafes kiriş
(c ) Çekirdek+yatay5
perde
(c ) Çekirdek+ (d ) İç içe 1
tüp +dış tüp
(d ) Çekirdek2
(b) Perdeli
çerçeve konsol
(c ) Çekirdek+21
(c ) Çekirdek+
döşemeli
4Coupled Shear wall: Shear wall withopening (for door, window etc.)
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Betonarme Yapılar
Taşıyıcı Sistem Düzenleme İlkeleri
(kirişli)
(a ) Çerçeve1
(a ) Çerçeve
(kirişsiz)2
Kirişli)
(c ) Çekirdek
(Vierendeel3
kafes kiriş
(c ) Çekirdek+yatay5
perde
(c ) Çekirdek+ (d ) İç içe 1
tüp +dış tüp
(d ) Çekirdek2
(b) Perdeli
çerçeve konsol
(c ) Çekirdek+21
(c ) Çekirdek+
döşemeli
4
Frame+ Shear Wall: Frameand Shear Wall areconnected to each other bylink beams
(kirişli)
(a ) Çerçeve1
(a ) Çerçeve
(kirişsiz)2
Kirişli)
(c ) Çekirdek
(Vierendeel3
kafes kiriş
(c ) Çekirdek+yatay5
perde
(c ) Çekirdek+ (d ) İç içe 1
tüp +dış tüp
(d ) Çekirdek2
(b) Perdeli
çerçeve konsol
(c ) Çekirdek+21
(c ) Çekirdek+
döşemeli
4
Tube - Frames;Frequent column arrangement
along 4 façades + beamscolumn distance ≤ 3𝑚
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• Usage of lateral load bearing system in RC high rise buildings
High Rise BuildingsDesign under Lateral loads Lateral load resisting members
frame Shear
Wall
Frame+ Shear
WallFrame+ tube Frame+
tube+coreMulti-cell tube
RC_LBSD_6 24
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Core: has thin wall, close formed shear wall membersGenerally; arranged around staircase/elevators
Lateral load resisting system:
Combination of lateral load resisting members given above + beams+ slabs
High Rise BuildingsDesign under Lateral loads Lateral load resisting members
RC_LBSD_6 25
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• Used for buildings with ~8-10 storey; to resist/carry vertical+lateral load
• For taller bldgs; displacements/Cıre System area of members increase. Therefore, Shear wall and/or Core systems are considered
High Rise BuildingsDesign under Lateral loads (Moment Resisting) Frame system
RC_LBSD_6 26
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- Displacement of SW and frame are different under lateral load
- Displacement under lateral load; SW; small disp. at bottom; large at upper lever
-In a frame+shear wall system;at bottom storeys; all lateral force is resisted by SWat upper storeys; shear force is resisted by Frame.
High Rise BuildingsDesign under Lateral loads Frame+Shear Wall system
RC_LBSD_6 27
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,
High Rise BuildingsDesign under Lateral loads Frame+Shear Wall system
RC_LBSD_6 28
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Behavior; similar to frame+SW systems
,
Coupled
SW
High Rise BuildingsDesign under Lateral loads Coupled SW + SW + Frame systems
RC_LBSD_6 29
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,
Coupled
SW
High Rise BuildingsDesign under Lateral loads Coupled SW + Frame+ Core systems
RC_LBSD_6 30
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• Shear force is directly transferred from SW to slab
• Therefore, thickness of slab between SWs increases
• Special design is required
High Rise BuildingsDesign under Lateral loads SW only systems
RC_LBSD_6 31
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,,
High Rise BuildingsDesign under Lateral loads SW + column+core systems
RC_LBSD_6 32
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• (surrounding) tube systems can be used for significantly high rise bldgs
• If the heigth of the bldg increases more; usage of tube + core system
• For the tallest bldgs, surrounding tubes are arranged as truss system• In tube systems; all of lateral forces and a part of vertical loads are
resisted by tube.
,,
High Rise BuildingsDesign under Lateral loads Tube Systems
RC_LBSD_6 33
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. G
. core
. G .G
Stabile, good
Arch. difficulty
Stabile
Poor torsional resistance
(easy to revolve)
unstable unstable
Labil Not good better ideal
One way No torsional
stiffnessgood
High Rise BuildingsDesign under Lateral loads Design Remarks
RC_LBSD_6 34
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• If axes of SWs intersect at a point; it cause torsion problem
High Rise BuildingsDesign under Lateral loads Design Remarks
RC_LBSD_6 35
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• Axis of vertical LBS members should overlap/be continous as possible
• Loads should be transferred to soil in the shortest way
• Lateral load bearing/resisting members should be arranged at outer edges of building, as possible (except core)
High Rise BuildingsDesign under Lateral loads Design Remarks
RC_LBSD_6 36
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• The core should be close to Center of Gravity of bldg, where it is main LB member
• As a measure againist torsion; where a core is the main LB member;
at least 2 parallel SW or frame at the sides/edges
High Rise BuildingsDesign under Lateral loads Design Remarks
RC_LBSD_6 37
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High Rise BuildingsDesign under Lateral loads Lateral load resisting members
RC_LBSD_6 38
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High Rise BuildingsDesign under Lateral loads Lateral load resisting members
RC_LBSD_6 39
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High Rise BuildingsDesign under Lateral loads Lateral load resisting members
RC_LBSD_6 40
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High Rise BuildingsDesign under Lateral loads Lateral load resisting members
RC_LBSD_6 41
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High Rise BuildingsDesign under Lateral loads Lateral load resisting members
RC_LBSD_6 42
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Betonarme Yapılar
Taşıyıcı Sistem Düzenleme İlkeleri
İstanbul Teknik Üniversitesi Mimarlık Fakültesi
Yapı Statiği ve Betonarme Birimi
![Page 44: Reinforced Concrete Structureshaluk/rc/LBSD_week6_HS.pdfBetonarme Yapılar Taşıyıcı Sistem Düzenleme İlkeleri (kiriúli) (a ) deroeve 1 (a ) deroeve (kiriúsiz) 2 Kiriúli) (c](https://reader030.vdocuments.net/reader030/viewer/2022040109/5e414d988b5839543b4d497d/html5/thumbnails/44.jpg)
Betonarme Yapılar
Taşıyıcı Sistem Düzenleme İlkeleri
İstanbul Teknik Üniversitesi Mimarlık Fakültesi
Yapı Statiği ve Betonarme Birimi
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Betonarme Yapılar
Taşıyıcı Sistem Düzenleme İlkeleri
İstanbul Teknik Üniversitesi Mimarlık Fakültesi
Yapı Statiği ve Betonarme Birimi
![Page 46: Reinforced Concrete Structureshaluk/rc/LBSD_week6_HS.pdfBetonarme Yapılar Taşıyıcı Sistem Düzenleme İlkeleri (kiriúli) (a ) deroeve 1 (a ) deroeve (kiriúsiz) 2 Kiriúli) (c](https://reader030.vdocuments.net/reader030/viewer/2022040109/5e414d988b5839543b4d497d/html5/thumbnails/46.jpg)
Betonarme Yapılar
Taşıyıcı Sistem Düzenleme İlkeleri
İstanbul Teknik Üniversitesi Mimarlık Fakültesi
Yapı Statiği ve Betonarme Birimi
![Page 47: Reinforced Concrete Structureshaluk/rc/LBSD_week6_HS.pdfBetonarme Yapılar Taşıyıcı Sistem Düzenleme İlkeleri (kiriúli) (a ) deroeve 1 (a ) deroeve (kiriúsiz) 2 Kiriúli) (c](https://reader030.vdocuments.net/reader030/viewer/2022040109/5e414d988b5839543b4d497d/html5/thumbnails/47.jpg)
Betonarme Yapılar
Taşıyıcı Sistem Düzenleme İlkeleri
İstanbul Teknik Üniversitesi Mimarlık Fakültesi
Yapı Statiği ve Betonarme Birimi
![Page 48: Reinforced Concrete Structureshaluk/rc/LBSD_week6_HS.pdfBetonarme Yapılar Taşıyıcı Sistem Düzenleme İlkeleri (kiriúli) (a ) deroeve 1 (a ) deroeve (kiriúsiz) 2 Kiriúli) (c](https://reader030.vdocuments.net/reader030/viewer/2022040109/5e414d988b5839543b4d497d/html5/thumbnails/48.jpg)
Betonarme Yapılar
Taşıyıcı Sistem Düzenleme İlkeleri
İstanbul Teknik Üniversitesi Mimarlık Fakültesi
Yapı Statiği ve Betonarme Birimi
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Betonarme Yapılar
Taşıyıcı Sistem Düzenleme İlkeleri
İstanbul Teknik Üniversitesi Mimarlık Fakültesi
Yapı Statiği ve Betonarme Birimi
![Page 50: Reinforced Concrete Structureshaluk/rc/LBSD_week6_HS.pdfBetonarme Yapılar Taşıyıcı Sistem Düzenleme İlkeleri (kiriúli) (a ) deroeve 1 (a ) deroeve (kiriúsiz) 2 Kiriúli) (c](https://reader030.vdocuments.net/reader030/viewer/2022040109/5e414d988b5839543b4d497d/html5/thumbnails/50.jpg)
Betonarme Yapılar
Taşıyıcı Sistem Düzenleme İlkeleri
İstanbul Teknik Üniversitesi Mimarlık Fakültesi
Yapı Statiği ve Betonarme Birimi
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Betonarme Yapılar
Taşıyıcı Sistem Düzenleme İlkeleri
İstanbul Teknik Üniversitesi Mimarlık Fakültesi
Yapı Statiği ve Betonarme Birimi