基础隔震结构在彭州妇幼医院工程中的设计应用

Design and application on base isolated Structure of Pengzhou Women and Children Hospital Building

彭州妇幼医院采用基础橡胶隔震支座结构体系,上部结构为多层框架结构。本文介绍了该工程基础隔震结构的设计过程,应用MIDAS有限元分析软件,分别进行了基础隔震结构与非隔震结构的地震反应时程分析,对基础隔震结构与非隔震结构在同一地震作用下的周期、楼层剪力、层间位移、和层间加速度进行比较分析。通过比较分析表明,基础隔震结构的地震反应明显小于非隔震结构的地震反应。

The Pengzhou Women and Children hospital building is made of frame structure system with base seismic isolated by rubber bearings.In this paper,the design of base isolated structure of this project is presented.The large finite element MIDAS program is used to analyze dynamic time history of the base-isolated and the base-fixed structure.The earthquake response of building at the same seismic condition is compared with natural vibration period,floor shear,floor deformation,floor acceleration between the base-isolated structure and the base-fixed structure.The results show that the responses of the base-isolated structure are remarkably less than those of base-fixed structure at the same seismic condition.