（北京市建筑设计研究院有限公司， 北京 100045）

［摘要］项目底盘结构和上部剪力墙结构采用隔震层相连，形成高位转换且上下刚度相差大的结构体系。介绍层间隔震设计特点及采取的构造和加强措施，并对底盘结构进行动力弹塑性分析，计算减震系数并验算橡胶支座拉压应力及变形，研究底盘结构在大震下的受力特点和抗震性能，结果表明，主体结构能满足各项设计性能指标要求。

［关键词］弹塑性;  减震系数; 隔震设计; 橡胶支座

中图分类号：TU318-2文献标识码：A文章编号：1002-848X(2016)17-0074-04

Seismic isolation design of A1 zone of joint inspection and repair database of Bei′an River Depot

Zhou Gang， Shu Weinong， Shi Yi， Sun Peng， Bu Longgui， Shen Kuifeng， Zhao Dongzhuo

(Beijing Institute of Architectural Design, Beijing 100045, China)

Abstract:The project chassis structure and the upper shear wall structure are connected by the isolation layer, which forms the structural system with high-level transfer and large stiffness difference between the upper and lower parts. The interlayer seismic isolation design features were introduced as well as details of seismic design and strengthening measures. Dynamic elastic-plastic analysis was carried out on the chassis structure. Damping coefficient was calculated and tension and compression stresses and deformation of rubber bearing were checked, in order to study mechanical characteristics and seismic performance of the chassis structure under rare earthquake. The results show that the main structure can meet the requirements of the design performance index.

Keywords:elastic-plastic; damping coefficient; seismic isolation design; rubber bearing

作者简介：周钢，本科，高级工程师，Email：592803349@qq.com。