（1 北京市建筑设计研究院有限公司， 北京 100045； 2 北京建筑大学土木与交通工程学院， 北京 100044）

［摘要］对高烈度区某钢筋混凝土剪力墙结构，采用了可提离装置来释放橡胶隔震支座的拉应力，并进行了隔震设计研究。采用SAP2000软件对结构进行隔震设计，中震作用下的减震系数最大值为0-32，比非隔震结构地震响应减小显著。将一种可以释放隔震支座拉应力的提离装置应用于结构中，在一定程度上形成摇摆机制，利用结构重力势能抵抗一部分水平地震作用，并采用设置初始间隙的简易抗拉装置解决结构抗倾覆问题，解决了大震作用下隔震支座拉应力过大的问题，验算结果表明隔震支座的极大和极小面压、矢量水平位移能够满足规范要求。采用ABAQUS软件对结构进行了大震作用下动力弹塑性时程分析，结果表明结构能够满足“大震不倒”的抗震设防目标。

［关键词］高烈度区； 动力弹塑性时程分析； 橡胶隔震支座； 抗倾覆

中图分类号：TU398+.2， TU352-12文献标识码：A文章编号：1002-848X(2019)18-0019-06

Research on design of base isolation structure with uplift device in high seismic fortification intensity region

Ge Dongdong1, Miao Qisong1, Bu Longgui1, Chen Xi1, Xie Linlin2, Xing Juehui1

(1 Beijing Institute of Architectural Design, Beijing 100045, China;  2 School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China)

Abstract:Uplift devices were used to release tensile stress of rubber isolation bearings and rubber isolation system design were performed for a reinforced concrete shear wall structure in the high seismic fortification intensity region.  The isolation design of the structure was carried out with SAP2000. The maximum damping coefficient of the inter-story shear force and overturning moment was 0-32, which was significantly lower than that of the non-isolation structure. A kind of uplift device which could release the tension of isolation bearing was applied to the structure, which formed a rocking mechanism to some extent to use the gravitational potential energy of the structure to resist part of horizontal earthquake action, and a simple tensile device with initial clearance was used to solve the problem of anti-overturning of the structure and solve the problem of excessive tensile stress of isolation bearing under the rare earthquake. The results show that the maximum and minimum surface pressure and the horizontal displacement of vector can meet the standard requirements. ABAQUS was used to conduct the dynamic elastic-plastic time-history analysis of the structure under the rare earthquake. Results show that the structure can meet the seismic fortification target of “no collapsing under the rare earthquake”.

Keywords:rubber isolation bearing; high seismic fortification intensity region; rare earthquake; dynamic elastic-plastic time-history analysis

作者简介：閤东东，博士，高级工程师，一级注册结构工程师，Email：gddhust@163.com。