框架-带防屈曲支撑钢连梁筒体结构抗震性能分析  

The analysis of seismic performance of tube structure of frame-steel truss coupling beams with buckling-restrained Brace

作　　者：孙维东[1,2] 李康[1,2] 

机构地区：[1]长春工程学院土木工程学院 [2]吉林省防灾减灾重点实验室,长春130012

出　　处：《长春工程学院学报（自然科学版）》2015年第4期1-5,共5页Journal of Changchun Institute of Technology：Natural Sciences Edition

基　　金：吉林省教育厅"十二五"科学技术研究项目(2012270)

摘　　要：为分析框架—带防屈曲支撑钢连梁筒体结构的抗震性能,以某框筒结构模型为例,其中筒体部分分别采用了全部楼层为普通钢筋混凝土连梁、全部楼层设有普通钢桁架连梁、全部楼层设有带防屈曲支撑钢桁架连梁及局部侧移较大楼层设有带防屈曲支撑钢桁架连梁的4种方案,运用动力弹塑性时程分析方法,分析了4种方案在罕遇地震作用下的地震响应。计算结果表明,在全部楼层中设有带防屈曲支撑的钢桁架连梁方案与全部楼层均为普通钢筋混凝土连梁的方案和全部楼层设有普通钢桁架连梁的方案相比,结构的位移、速度、加速度以及底部总剪力都有不同程度的降低,只在局部侧移较大的楼层布置带防屈曲支撑钢桁架连梁方案与全楼层布置带防屈曲支撑钢桁架连梁方案相比,地震响应相差不大,也能起到较好的减震效果。In order to analysis the seismic performance of the tube structure of frame-steel truss coupling beams with buckling-restrained brace,a framed-tube structure model is used as example in this paper.The tube part has been adopted from respectively 4kinds of plans.All four cases installed with ordinary reinforced concrete coupling beams.All floors are equipped with ordinary steel truss coupling beams.All floors are equipped with the steel truss coupling beams with buckling-restrained brace.The local lateral larger floors are equipped with the steel truss coupling beams with buckling-restrained brace.The dynamic elastoplastic time history analysis method has been chosen to analyze the seismic responses of this four plans in rare seismic.The calculation result showes that,comparing the case of all floors equipped with the steel truss coupling beams with buckling-restrained brace to all floors installed with ordinary reinforced concrete coupling beams,and to all floors equipped with ordinary steel truss coupling beams,the shift of structure,speed,acceleration and total shearing force of substrate have different degrees of reduce.Comparing the case of only local lateral larger floors equipped with the steel truss coupling beams with buckling-restrained brace to the case of all floors equipped with steel truss coupling beams with buckling-restrained brace,seismic responses are not so far apart,which can also have good seismic damping effect.

关 键 词：防屈曲支撑 钢桁架连梁 时程分析 地震响应 减震效果 

分 类 号：TU973.31[建筑科学—结构工程]