长周期地震动作用下惯容‑层间隔震结构地震响应分析  

Seismic response analysis of inerter-inter-storey isolated structure under long-period ground motions

作　　者：吴应雄[1,2] 郑祥浴 翁锦华 王林建 江丽玲 WU Ying-xiong;ZHENG Xiang-yu;WENG Jin-hua;WANG Lin-jian;JIANG Li-ling(Department of Civil Engineering,Fuzhou University,Fuzhou 350108,China;Fujian Provincial Key Laboratory on Multi-Disasters Prevention and Mitigation in Civil Engineering,Fuzhou 350108,China;Fuzhou Architectural Design Institute Co.Ltd.,Fuzhou 350011,China;Yunnan Institute of Earthquake Engineering,Kunming 650041,China)

机构地区：[1]福州大学土木工程学院,福建福州350108 [2]福建省土木工程多灾害防治重点实验室,福建福州350108 [3]福州市建筑设计院有限责任公司,福建福州350011 [4]云南省地震工程研究院,云南昆明650041

出　　处：《振动工程学报》2022年第5期1222-1232,共11页Journal of Vibration Engineering

基　　金：国家自然科学基金资助项目(51778149);福建省住房和城乡建设厅科技开发研究项目(2022);云南省青年地震科学基金资助项目(2020K06)。

摘　　要：已有研究表明惯容系统与基础隔震技术结合使用可以减小长周期地震动下基础隔震结构的动力响应,但惯容系统对层间隔震结构控制效果与基础隔震存在差异,需要进一步研究。提出将SPIS‐Ⅱ惯容系统应用于层间隔震结构,对惯容系统进行参数设计,通过数值分析研究长周期地震动下惯容‐层间隔震结构的减震效果。结果表明:采用虚拟激励法求解结构的随机振动响应,能够快捷有效地确定惯容系统参数;惯容系统大大减少了隔震层位移,有效解决了长周期地震动下隔震层位移超限的问题,且随地震动幅值增大,位移减震率也随之提高;惯容‐层间隔震系统在很好地控制上部结构响应的同时,进一步减小了下部子结构的地震响应。Previous studies have shown that the combination of inerter system and base isolation technology can reduce the dynamic response of base isolated structure under long-period ground motions.But the control effect of inerter system on inter-storey isolat‐ed structure is different from that of base isolated structure,which needs further research.The SPIS-Ⅱinerter system is applied to the inter-storey isolated structure.The parameters of the inerter system are designed.The seismic-reduction effect of the inerter-in‐ter-storey isolated structure under long-period ground motions is studied by numerical analysis.The results show that using the vir‐tual excitation method to solve the random vibration response of the structure can quickly and effectively determine the parameters of the inerter system.The inerter system greatly reduces the displacement of the isolation layer,effectively solves the problem of displacement overrun of the isolation layer under long-period ground motions,and the displacement seismic-reduction ratio increas‐es with the increase of ground motion amplitude.The inerter-inter-storey isolated system not only controls the response of the su‐perstructure,but also further reduces the seismic response of the substructure.

关 键 词：层间隔震结构 长周期地震动 惯容系统 隔震层位移 位移减震率 

分 类 号：TU352.12[建筑科学—结构工程]