防屈曲支撑在偏心钢框架中的减震控制研究  

Study on Seismic Response Control of Eccentric Steel Frame with Buckling-Restrained Brace

作　　者：孟文清[1] 张媛媛[1] 张亚鹏[1] 史三元[1] 辛晓鹏[1] 

机构地区：[1]河北工程大学土木工程学院,河北邯郸056038

出　　处：《湘潭大学自然科学学报》2011年第1期34-38,共5页Natural Science Journal of Xiangtan University

基　　金：河北省自然科学基金项目(E2010001012)

摘　　要：运用有限元分析软件SAP2000对某偏心钢框架和在原框架基础上设置防屈曲支撑的3种方案进行了模态分析和时程分析,比较了它们的周期比、位移比及层间位移等.结果表明:合理地设置防屈曲支撑可以有效的控制偏心结构的扭转效应,并减小结构的侧向水平位移和层间位移;在大震下,能够降低结构的加速度反应,耗散大部分地震能量,保护主体结构.In this paper,based on finite element analysis software SAP2000,an eccentric steel frame was compared with three kinds of control plans with buckling-restrained braces in mode analysis and time history analysis,comparing period ratios,displacement ratios and inter-story displacement.The results show that the torsional deformation of the structure can be controlled effectively.Besides,horizontal displacements and story drifts are reduced.Further,the acceleration responses are decreased,and buckling-restrained braces can consume most of the seismic energy under strong earthquakes,so the main structure can not be damaged.

关 键 词：防屈曲支撑 偏心钢框架 减震控制 

分 类 号：TU473[建筑科学—结构工程]