| In recent years,many scholars began to study a new type of shear wall members-double steel plate-concrete composite shear wall.This new type of component is composed of outer steel plate and inner concrete.It can make full use of the material properties of steel plate and concrete.At the same time,steel plate can be used as formwork in construction,which greatly reduces the construction period.Scholars at home and abroad have done a lot of research on the composite shear wall with zigzag double steel plates and concrete,but there are often several shear walls with zigzag cross-section to form special-shaped shear walls in buildings,such as at the junction of longitudinal and transverse walls,the corner of the building,the core tube and so on.The shear force of special-shaped shear walls is complex,and its mechanical properties and design methods are less studied,therefore,in this paper,the failure mechanism and mechanical properties of T-shaped double steel plate-concrete composite shear wall are analyzed by finite element method,and the following work is accomplished concretely:Firstly,the model of T-shaped double steel plate-concrete composite shear wall is established by using finite element software ABAQUS.The mechanical properties and energy dissipation capacity of members are studied and analyzed by changing the concrete strength grade,steel plate strength grade,axial compression ratio,steel plate thickness of concealed columns,thickness of wall and partition plate,thickness of flange,thickness of web and other parameters in the model.The results show that T-shaped double shear wall has good energy dissipation capacity.Steel plate-concrete composite shear wall has good mechanical properties and high energy dissipation capacity.Secondly,the failure mechanism of concrete cracking point,yield point,peak load point and failure load point of typical members of T-shaped double steel plate-concrete composite shear wall is studied and analyzed. |
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