基于新型自复位摩擦耗能支撑的RC框架结构地震残余变形控制  

Seismic residual deformation control for RC frame structures based on a novel self-centering friction damping brace

作　　者：毕仲君 胡志强 王琪[1] 胡晓斌[1] BI Zhongjun;HU Zhiqiang;WANG Qi;HU Xiaobin(School of Civil Engineering,Wuhan University,Wuhan 430072,China)

机构地区：[1]武汉大学土木建筑工程学院,武汉430072

出　　处：《振动与冲击》2020年第15期95-102,共8页Journal of Vibration and Shock

基　　金：教育部博士点基金(20120141120083)。

摘　　要：基于Cu-Al-Be合金丝,研制了一种新型自复位摩擦耗能支撑,通过试验研究了该支撑的滞回性能,并利用OpenSEES平台建立了分析模型,将其应用于RC框架结构的地震残余变形控制。结果表明:摩擦力越大,该支撑耗能性能越好,但相应会增大残余位移;利用OpenSEES分析模型计算的滞回曲线与试验曲线吻合较好,表明所建立的分析模型具有良好的计算精度;在RC框架结构地震残余位移较大处布置该支撑,能够经济有效地控制结构整体的残余位移。Here, a novel self-centering friction damping brace was fabricated with Cu-Al-Be alloy wires. The hysteresis performance of the brace was studied with tests, and the corresponding numerical analysis model was established using the platform OpenSEES. Finally, the brace was used to control seismic residual deformation of reinforced concrete(RC) frame structures. The results showed that the larger the friction force, the better the brace’s energy dissipation performance and the larger the residual displacement;hysteresis curves computed using the OpenSEES analysis model agree better with test ones, so the established analysis model has a good accuracy;the proposed braces being arranged at positions with larger seismic residual displacements of a RC frame structure can economically and effectively control seismic residual displacements of the whole structure.

关 键 词：自复位摩擦耗能支撑 形状记忆合金 滞回性能 分析模型 残余变形 

分 类 号：TN929.53[电子电信—通信与信息系统]