框架填充墙平面外抗震性能数值模拟

Numerical Simulationon of Out-of-Plane Seismic Performance of Frame Infilled Wall

为研究不同程度平面内(IP)损伤,以及加载制度对框架填充墙平面外(OOP)抗震性能的影响,采用ABAQUS软件对分离式框架填充墙模型进行分析。模拟结果表明:框架填充墙平面内损伤程度是影响平面外承载力与刚度的重要因素,平面外承载力与刚度随着平面内损伤程度增大而降低;以1/200位移角为幅值进行低周往复加载后维持平面内位移,框架填充墙平面外承载力有一定提高,但维持平面内位移对于延缓平面外刚度退化影响不显著;框架填充墙平面内受损程度增加后,达到平面外峰值荷载时墙体面外变形程度增大,以1/100位移角为幅值进行低周往复加载后,维持平面内位移对墙体平面外横向变形有一定增大作用。

To investigate the effect of different degrees of in-plane(IP)damage and the loading system on the seismic performance of the frame infilled wall out-of-plane(OOP),the separation frame infilled wall model using ABAQUS software is analyzed.The simulation results show that the IP damage degree of the frame infilled wall is an important factor affecting the OOP bearing capacity and stiffness,the OOP bearing capacity and stiffness decrease as the IP damage degree increases.After low-frequency cyclic loading with a displacement angle of 1/200 as the amplitude,the IP displacement is maintained,and the OOP bearing capacity of the frame filled wall improves to a certain extent.Maintaining IP displacement has no significant effect on delaying the degradation of out of plane stiffness.As the IP damage degree of frame infilled wall increases,the OOP deformation of infill increases.The degree of IP damage of the frame filled wall increases,the degree of OOP deformation of the wall body increases when reaching the OOP peak load.After low-frequency cyclic loading with a displacement angle of 1/100,maintaining IP displacement has a certain increasing effect on the lateral deformation of OOP wall.