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

摘要

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 long-period 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.