Parametric Study of Composite Shear Wall with Embedded Steel Truss

Abstract

Shear walls can be designed to have sufficient bearing capacity and deformation and absorb energy due to nonlinear shear-bending and axial load - bending, interactions. However, in the event that reinforced concrete walls do not have sufficient seismic resistance, the effective solution is to use new composite wall options. The use of steel trusses, consisting of steel columns and embedded steel brace in the reinforced concrete shear wall is one of the types of composite shear walls. In this study, seismic behavior of composite shear wall with embedded steel truss is investigated. For this purpose, various models of these walls have been modeled using finite element method at 5, 10 and 15 storys. The influence of various factors such as bracket area, column area, and axial load ratio on the performance of this system against lateral loads is evaluated. The influence of various factors such as brace area, column area, and axial load ratio on the performance of this system against lateral loads is evaluated. The results show the steel braces to increase lateral bearing capacity and column steel has been more effective in absorbing energy. Axial load had a greater effect on increasing the initial hardness. But , to avoid the adverse effects on ductility behavior, the axial load ratio must be limited to the medium level

Keywords

• composite shear wall
• steel truss
• finite element analysis
• full cohesion
• seismic behavior