Summary of research on disaster prevention of mid-story isolation buildings caused by long period ground motion disasters

长周期地震动作用下层间隔震建筑防灾研 究综述 张亚飞 1,董廷顺 2,房思彤 1,赵洁 1,宁宇峰 1,招继炳 1,周旺旺 1,刘德稳 1 1 西南林业大学土木工程学院 2 昆明新正东阳建筑工程设计有限公司 昆明 650000,中国 1165638944@qq.com Abstract—This paper summarizes the definition and characteristics of long-period ground motion and the research results of long-period ground motion monitoring in the region where earthquakes occur, summarizes the research status of disaster prevention of mid-story isolated buildings under long-period earthquake excitation. Through the simulation of finite element software and shaking table test under longperiod ground motion, it can be concluded that the story isolation structure has good disaster prevention ability under long-period ground motion, it is pointed out that under the action of long-period ground motion, various factors such as velocity pulse, different isolation layers and different isolation bearings should be considered for isolation design; it will be a new direction of design and research to use protective measures to effectively limit protection and to explore energy dissipation measures with remarkable effect in story isolation design. Keywords— long-period ground motions; monitor; mid-story isolation; disaster prevention capability; research summary