Major elements:Core wall Serves as the major load taking element and to provide rigidity to resist deflection caused by lateral load (wind,earthquake loading) Usually formed by mechanical-lifted formwork system such as climb form or jump form Connection provision such as anchor plate for steel beams,build-in bar couplers or starter bar box for slab,and anchor frame for outrigger,will be provided in the core wall during its construction
Major elements: Core wall • Serves as the major load taking element and to provide rigidity to resist deflection caused by lateral load (wind, earthquake loading) • Usually formed by mechanical-lifted formwork system such as climb form or jump form • Connection provision such as anchor plate for steel beams, build-in bar couplers or starter bar box for slab, and anchor frame for outrigger, will be provided in the core wall during its construction
Shear wa ①②④ ⑧ 1200200 40 2800 2300 3300 。A structural sy: AZ2 0p0 panels)to cour structure.Wind 0Z8310Z8 loads that shea 20 of shear walls A encasing an el core. Q15 3300 zhulong.com
Shear wall • A structural system composed of braced panels (or shear panels) to counter the effects of lateral load acting on a structure. Wind and seismic loads are the most common loads that shear walls are designed to carry. A structure of shear walls in the center of a large building—often encasing an elevator shaft or stairwell — form a shear core
The design principles of Ductility Composite structural systems class composite shear walls are a H M included in specific codes- design of composite steel and concrete structures and u in provisions regarding the 41 Type 1 Type 2 design of buildings for Steel or composite Concrete walls re- moment frame with inforced by con- connected concrete nected encased ver- earthquake resistance. infill panels tical steel sections. Three types of composite Type 3 Composite or structural systems are concrete walls coupled u by steel or a defined (earthquake composite beams resistance)in Eurocode 8 Composite steel plate shear walls u =12 Qu part 7.10.(Type 2) a Figure 1.Design concepts and behavior factors
Figure 1. Design concepts and behavior factors. • The design principles of composite shear walls are included in specific codesdesign of composite steel and concrete structures and in provisions regarding the design of buildings for earthquake resistance. • Three types of composite structural systems are defined (earthquake resistance) in Eurocode 8 part 7.10 . (Type 2)
Composite shear walls ◆ Shear wall or core wall is the main lateral force resistant components,where the lateral forces could be induced by wind,by earthquake or combination of the two.The influence of the lateral forces on the building normally varies with the height of building, and therefore their structural requirements rise. Higher axial compression strength,higher ductility and thin structural wall size. Composite wall possesses these three features as compared to the RC shear walls
◆ Shear wall or core wall is the main lateral force resistant components, where the lateral forces could be induced by wind , by earthquake or combination of the two. The influence of the lateral forces on the building normally varies with the height of building, and therefore their structural requirements rise. ◆ Higher axial compression strength, higher ductility and thin structural wall size. ◆Composite wall possesses these three features as compared to the RC shear walls. Composite shear walls
>Steel encased comnosite shear wall 50.70 760 70,50 steel encased profile vertical reinforcement steel encased profile (70x70x5) (010/100) Encased steel pr (70x70x5) CSRCW-1 effectively con shear connector horizontal reinforcement (013/150) 760 (08/150) concrete cracks ir 7050 CSRCW-2 and to enable a be 1000 dissipation r 070 345 0 345 20 Normally the ste CSRCW-3 are encased as 1000 50,70 760 70 elements,which e CSRCW-4 seismic performar 1000 70 860 whole wall Shear CSRCW-5 is used at the sted interface. D.Dan,A.Fabian V.Stoian,Romania
➢Steel encased composite shear wall Encased steel profiles can effectively control the concrete cracks in the wall, and to enable a better energy dissipation mechanism. Normally the steel profiles are encased as the edge elements, which enhance the seismic performance of the whole wall . Shear connction is used at the steel-concrete interface. D.Dan , A.Fabian & V.Stoian, Romania