新型全装配剪力墙抗震性能模拟

参考“螺栓连接件螺栓”式水平接缝连接构造全装配混凝土剪力墙(PSW-1),设计了一种新型“螺栓连接件”式水平接缝连接构造全装配混凝土剪力墙(PSW-2),并通过有限元软件ABAQUS建立了PSW-1、PSW-2和对比现浇剪力墙试件(SW-1)的理论分析模型。在试验工况下对PSW-1进行了单向加载模拟并将所得荷载位移曲线与试验结果进行对比,证明文中数值模拟方法有效;对PSW-1、PSW-2与SW-1进行了低周反复加载数值模拟,研究了这3类剪力墙试件的抗震性能。结果表明,PSW-2新型装配式剪力墙试件的抗震性能总体上优于PSW-1装配式剪力墙试件;PSW-2试件的承载力及刚度与SW-1现浇剪力墙试件基本一致,变形能力略好,但耗能能力略低于SW-1试件;3类试件破坏形态存在一定差异。

Research on seismic behavior of prefabricated shear wall with innovative horizontal joint

Based on an existing assembly shear wall with bolt-steel-bolt horizontal connector (PSW-1), an innovative prefabricated shear wall with bolt-steel horizontal connector (PSW-2) is designed. The theoretical analysis models of three specimens, including PSW-1, PSW-2 and a cast-in-place shear wall(SW-1), are established by finite analysis software ABAQUS. PSW-1 is analyzed under monotonic load, and the feasibility and accuracy of simulation method used in this paper is confirmed based on the comparison of load-displacement curves between the simulation and the test result. The seismic behavior of three specimens under cyclic load is studied and compared based on the finite element simulation result. The result of the research shows that the seismic behavior of PSW-2 is generally better than that of PSW-1. The bearing capacity and stiffness of PSW-2 and SW-1 are basically in good agreement. The deformability of PSW-2 is slightly better than that of SW-1, while the energy-dissipating capacity of PSW-2 is lower than that of SW-1. The failure mode of PSW-1, PSW-2 and SW-1 are different.