EXPERIMENTAL AND ANALYTICAL STUDY OF COMPOSITE STEEL PLATE SHEAR WALL WITH ASSEMBLED MULTI-CONCRETE SLAB

The quasi-static test was carried out on composite steel plate shear wall with vertical assembling mode (V-CSPSW), composite steel plate shear wall with horizontal assembling mode (H-CSPSW) and traditional composite steel plate shear wall (CSPSW). The failure characteristic, hysteretic behavior, energy dissipation capability, displacement ductility, stiffness degradation and displacement ductility of the composite walls were analyzed. The numerical model was established by using ABAQUS, and a parametric study was then performed to study the effects of gap width, bolt spacing-to-steel thickness ratio and concrete slab thickness. The results show that the CSPSW assembled by multi-concrete slabs has lower lateral stiffness and energy dissipation capacity, but it can reduce the harmful effects of additional moment generated by the steel plate on frame columns. V-CSPSW is a lateral force resisting member possessing superior seismic performance, its energy dissipation capacity is 1.3 times of that the H-CSPSW has and its stiffness degradation is slower. In order to ensure the composite steel plate shear wall has good lateral resisting capacity, the gap width should be less than 48 mm and 72 mm if the bolt spacing-to-steel thickness ratio is 100 and 125, respectively. The bolt spacing-to-steel thickness ratio of the V-CSPSW should be less than 125 if the concrete slab possesses enough restraint stiffness.