自复位耗能支撑钢板剪力墙的滞回性能研究

Hysteretic Behavior of Steel Plate Shear Wall with Self-Centering Energy Dissipation Braces

提出一种带自复位耗能支撑的钢板剪力墙(SPSW-SCEDB),由墙板与自复位耗能支撑组成,对其构造及工作原理进行了介绍.对SPSW-SCEDB在低周往复荷载作用下的滞回性能进行数值模拟,并与两边连接钢板剪力墙进行对比分析.结果表明,SPSW-SCEDB滞回曲线呈旗形,具备良好的承载能力、耗能能力与复位能力.与两边连接钢板剪力墙相比,SPSW-SCEDB极限承载力提高31%,,残余变形角减小91%,;同时,由于支撑与墙板的共同作用减缓了承载力退化,改善了延性及耗能能力,验证了SPSW-SCEDB具有良好的抗震性能.

A kind of steel plate shear wall with self-centering energy dissipation brace(SPSW-SCEDB)is proposed,which is composed of steel plate and self-centering energy dissipation braces.Configuration and working principle of SPSW-SCEDB are introduced.Hysteretic behavior of SPSW-SCEDB is simulated under low cyclic reversed loadings,and then compared with that of steel plate shear wall with two-side connections.Results indicate that the SPSW-SCEDB exhibits flag-shaped hysteretic performance,and has good bearing capacity,energy dissipation capacity and self-centering capability.Compared with the steel plate shear wall with two-side connections,the ultimate bearing capacity of SPSW-SCEDB is increased by 31%,,and the residual drift ratio is reduced by 91%,.Meanwhile,the interaction between braces and steel plate slows down the bearing capacity degradation and improves the ductility and energy dissipation capabilities.It is verified that the SPSW-SCEDB has good seismic performance.