栓钉连接下装配式剪力墙抗震性能模拟分析

Simulation analysis of seismic performance of assembled shear wall with stud connection

针对装配式剪力墙水平接缝在地震作用下易产生剪切滑移破坏的问题,为了保证结构的承载力和稳定性,设计了一种基于栓钉抗剪的连接方式,建立了装配式剪力墙模型,通过数值模拟分析水平接缝的不同构造方式对装配式剪力墙在地震作用下的破坏情况、水平力-位移滞回曲线、承载力、刚度退化、耗能能力和水平接缝相对位移等方面的影响。结果表明:与套筒灌浆连接相比,采用栓钉连接的剪力墙耗能能力提高了16.7%,变形能力更好;水平接缝相对位移减小了72.0%,结构整体性更好。

In view of the phenomenon that the horizontal joints of the assembled shear wall are prone to shear slip failure under the action of earthquake,in order to ensure the bearing capacity and stability of the structure,a connection mode was designed based on stud shear resistance.An assembled shear wall model was established.Through the numerical simulation,the effects of diffe-rent construction methods of horizontal joints on the failure,horizontal force displacement hysteretic curve,bearing capacity,stiffness degradation,energy dissipation capacity and relative displacement of the horizontal joints of the assembled shear walls under the action of earthquake were analyzed.The results show that compared with the sleeve grouting connection,the energy dissipation capacity of the shear wall connected by stud is increased by 16.7%,and the deformation capacity is better;the relative displacement of the horizontal joint is reduced by 72.0%,and the structural integrity is better.