设置加劲肋的双层钢板-混凝土组合剪力墙抗震性能试验研究

为研究设置加劲肋的双层钢板-混凝土组合剪力墙的抗震性能，对5个试验轴压比为0.4的模型试件进行了恒轴力下的拟静力试验。通过改变加劲肋、中部钢管混凝土暗柱的布置形式，研究该组合剪力墙在水平反复荷载作用下的破坏机理、滞回性能、变形能力以及耗能能力。试验结果表明：试件破坏时底部墙体钢板均发生了屈曲，呈现典型的压弯破坏特征；试件具有良好的延性和耗能能力；在双层钢板-混凝土组合剪力墙中仅设置纵向加劲肋对承载力提高不明显，仅设置横向加劲肋可以略提高试件的承载力，而双向加劲肋的设置将较明显提高试件的承载力；在双层钢板-混凝土组合剪力墙中部增设钢管混凝土暗柱可以较为明显地改善试件的承载力与延性。

Experimental research on seismic behavior of composite shear wall with double steel plates and infill concrete with stiffeners

In order to study the seismic behavior of composite shear wall with double steel plates and infill concrete with stiffeners, the quasi-static experiment under constant axial load on five specimens was carried out. The testing axial compression ratio was 0.4. The parameters in the experiment included the forms of stiffening rib and setting the concrete filled steel tubular column in central of the specimens. The failure mechanism, hysteretic behavior, deformability and energy dissipation capacity of the specimens under a cyclic lateral load were analyzed. The experiment results show that local buckling occurs at the lower part of the specimens before failure, and the failure mode of specimens is a typical compression-bending failure. The specimens have good bearing capacity, deformability and energy dissipation. There is no increase of bearing capacity for composite shear wall with transverse stiffener, but a little increase for that with longitudinal stiffener, and significantly increase for that with both longitudinal and transverse stiffeners. The deformability and bearing capacity of the composite shear wall can be significantly improved by setting the concrete filled steel tubular columns in center of the specimens.