摘要
研究了近场含脉冲地震动(NFWP地震动),近场不含脉冲地震动(NFWNP地震动)和远场地震动(FF地震动)对HDRB基础隔震剪力墙结构(HBRSW结构)地震易损性的影响。首先利用增量动力分析方法研究了HBRSW结构的概率地震需求模型(PSDM);在此基础上,分别绘制了HDRB隔震支座、RC剪力墙及HBRSW结构的易损性曲线;最后,利用抗倒塌储备系数评价了HBRSW结构的抗倒塌性能。研究表明,与峰值加速度PGA相比,谱加速度Sa与HBRSW结构性能参数的相关性较高;在同等强度地震动作用下,FF地震动引起的HBRSW结构损伤概率较大,NFWP引起的结构损伤概率次之,NFWNP地震动引起的结构的损伤概率最小;FF地震动作用下HBRSW结构的抗倒性塌能略差于NFWNP和NFWP地震动作用下HBRSW结构的抗倒塌性能。
This paper presents the seismic vulnerability assessment of a high-damping-rubber-bearing(HDRB)base-isolated RC shear wall structure(HBRSW structure)subjected to near-field with pulse(NFWP)ground motions,near-field with no pulse(NFWNP)ground motions and far-field(FF)ground motions.Probabilistic seismic demand models(PSDMs)of the HBRSW structure under NFWP ground motions,NFWNP ground motions and FF ground motions are generated based on scaling approach first.Then fragility curves for HDRB,RC shear wall and the HBRSW structure are developed.Finally,collapse margin ratio was used to evaluate the collapse-resistant performance of the HBRSW structure.The result shows that,compared with peak ground acceleration PGA,the correlation between spectrum acceleration Saand structural performance parameters of the HBRSW structure is higher.The seismic vulnerability of the HBRSW structure under FF ground motions is larger than that under NFWP ground motions and NFWNP ground motions,the collapse-resistant performance of the HBRSW structure under FF ground motions is less than that under NFWP ground motions and NFWNP ground motions.
作者
韩凤萍
王维
邓建国
李爱群
Han Feng-ping;Wang Wei;Deng Jian-guo;Li Ai-qun(Chongqing Urban Comprehensive Transportation Hub Development Investment Co.LTD,Chongqing 400023,China;Jiangsu University of Science and Technology,School of Civil Engineering and Architecture,Zhenjiang 212000,China;Beijing Advanced Innovation Center for Future Urban Design,Beijing University of Civil Engineering and Architecture,Beijing 100044,China;Southeast University,School of Civil Engineering,Nanjing 210096,China)
出处
《工程抗震与加固改造》
北大核心
2019年第3期36-42,共7页
Earthquake Resistant Engineering and Retrofitting
基金
国家自然科学基金项目(51438002,51708257,51708258)
重庆市应用开发计划重点项目(cstc2014yykfB30003)
