采用BRB的建桥合一高铁站房结构耗能减震分析  

Analysis of Energy Dissipation and Seismic Mitigation of High-speed Railway Station Building Structure Using BRB

作　　者：陈峰 CHEN Feng

机构地区：[1]福州市建筑科学研究院有限公司,福建福州350003

出　　处：《福建建设科技》2021年第5期13-18,共6页Fujian Construction Science & Technology

摘　　要：针对已有建桥合一的高铁站房结构,本文提出了基于屈曲约束支撑的站房结构耗能减震技术方案。通过对设置屈曲约束支撑的站房结构进行动力特性分析、多遇地震的反应谱分析和罕遇地震的动力弹塑性时程分析,探究屈曲约束支撑对于高铁车站结构抗震性能的影响,以验证屈曲约束支撑在车站结构的可行性。结果表明:建桥合一的高铁站房设置屈曲约束支撑,在多遇地震作用下可减小地震响应,在罕遇地震作用下可减轻结构塑性铰的屈服程度,避免站房结构的柱产生塑性铰。Aiming at the existing high-speed railway station structure with integrated bridge construction,this paper proposes a technical scheme for energy dissipation and seismic mitigation of the station structure based on buckling restrained bracing.Through the analysis of the dynamic characteristics of the station structure with buckling restrained supports,the response spectrum analysis of frequent earthquakes and the dynamic elastoplastic time history analysis of rare earthquakes,the influence of buckling restrained supports on the seismic performance of high-speed railway station structures is explored to verify the buckling Constrain the feasibility of support in the station structure.The results show that the high-speed railway station building with integrated bridge construction is equipped with buckling restraint supports,which can reduce the seismic response under frequent earthquakes,reduce the yield of the structural plastic hinges under rare earthquakes,and plastic hinges are avoided in the column of the station structure.

关 键 词：屈曲约束支撑 高铁车站 耗能减震 弹塑性时程分析 

分 类 号：TU352.1[建筑科学—结构工程]