带螺栓连接的组合钢板联肢剪力墙抗震性能试验研究

为了研究带螺栓连接的组合钢板联肢剪力墙结构的抗震性能，对1个1∶4缩尺的5层带螺栓连接的组合钢板联肢剪力墙试件进行了恒定轴压力下的水平低周往复加载试验，分析试件在循环荷载作用下的破坏形态、滞回曲线、骨架曲线、刚度退化、耗能能力等，得到结构的受力特征和破坏机理。研究结果表明:剪力墙墙肢以弯曲破坏为主，钢连梁以剪切破坏为主；滞回曲线无明显的捏缩效应；试件的承载力略高于理论承载力；平均延性系数为2.39，破坏时的位移角介于1.88%～1.94%之间；结构体系通过钢连梁的剪切变形和墙肢底部的塑性铰变形来耗散能量，能够明显改善带螺栓连接的组合钢板联肢剪力墙的抗震性能，实现了连梁-墙肢双重设防机制。

Experimental study on seismic behavior of composite steel plate coupled wall system with bolt connection

In order to investigate the seismic behavior of composite steel plate coupled wall system with bolt connection, a five-layer and 1/4 scale specimen was tested under horizontal low cyclic reversed load and constant compression load. The force characteristics and failure mechanism of the structure are obtained by analyzing the failure shape, hysteretic curve, skeleton curve, stiffness degradation and energy dissipation capacity the specimen under cyclic loading. The experimental results indicate that the wall fails in flexure dominant patterns and steel coupling beam in shear, hysteresis curve has no obvious pinching phenomenon, the bearing capacity of the specimen is slightly higher than the theoretical bearing capacity, the average displacement ductility coefficient is 2.39 and the ultimate displacement angel is between 1.88%～1.94%. Structural system dissipates energy through the shear deformation of the steel coupling beam and the deformation of plastic hinges at the bottom of the wall The seismic performance of composite steel plate coupled wall system with bolt connection can be improved obviously and the dual line of defense of coupling beam-wall is realized.