近断层地震作用下铅芯橡胶隔震结构地震响应评估  

Estimation of the Seismic Response of Lead-rubber Base-isolated Structure Against Near-fault Ground Motions

作　　者：张辉[1] 樊剑[2] 

机构地区：[1]中交第二公路勘察设计研究院有限公司,湖北武汉430062 [2]华中科技大学土木工程与力学学院,湖北武汉430074

出　　处：《工程抗震与加固改造》2010年第3期24-29,共6页Earthquake Resistant Engineering and Retrofitting

基　　金：国家自然科学基金资助项目(50778079);湖北省自然科学基金资助项目(2006ABA067)

摘　　要：建立了近断层地震用下统计平均的等强度延性需求谱,利用建立的等强度延性需求谱公式及规范中的弹性反应谱对近断层地震作用下结构的性能需求进行估计。基于改进的Push-over分析方法,选取铅芯橡胶基础隔震结构在15条近断层地震波作用下的响应计算作为具体的算例,将中美抗震规范的计算结果进行对比,为我国抗震规范中隔震结构分析计算的完善提供参考。The equivalent strength ductility demand spectrum under near-fault ground motions is established,which is used together with the elastic response spectrum of the aseismic code to estimate the structural performance demands.Based on the improved method,the computation of the response of the lead-rubber based-isolated structure under 15 near-fault earthquake records are choosed as specific numerical example,as well as the results of the Chinese and American aseismic codes are compared and the provisions of the analysis of the isolated structures of our country＇s aseismic code are improved.

关 键 词：近断层地震 弹塑性反应谱 铅芯橡胶隔震结构 PUSH-OVER 

分 类 号：TU352.12[建筑科学—结构工程]