（1 中国建筑西北设计研究院有限公司，西安 710018；2 西安达盛隔震技术有限公司，西安 710075）

［摘要］介绍了平凉市博物馆多塔高层结构基础隔震分析的全过程。对隔震支座参数设置及选型原则、水平减震系数取值、隔震支墩设计内力提取、抗震性能评估等进行了详细说明。着重讨论了地震波选取、支座阻尼参数定义等问题。结合大震时结构楼层加速度反应，为馆内浮放文物的防滑移、防倾覆提供了防震保护建议。通过大震弹塑性分析验证结构的可靠性，为同类隔震结构设计提供参考。

［关键词］高层多塔框架结构； 基础隔震；  文物防震保护； 性能评估

中图分类号：TU352-12文献标识码：A文章编号：1002-848X(2018)03-0021-05

Base isolation design and analysis of high-rise structure of Pingliang City Museum

Xin Li1, Dong Kaili1, Jia Junming1, Wu Kun1, Xiao Huaning2, Qin Wei2

(1 China Northwest Building Design & Research Institute Co.,  Ltd.,  Xi′an 710018, China; 2 Xi′an Dasheng Seismic Isolation Technology Co., Ltd., Xi′an 710075, China)

Abstract:The whole process of base isolation analysis of multi-tower high-rise structure in Pingliang City Museum was introduced. Several parameters of isolator bearings were introduced in detail, including parameter setting, structural form selection principle, the value of the horizontal damping coefficient, the design internal force of the isolated pier, and seismic performance evaluation. The issues of the selection of seismic waves and bearing damping parameters were focused on. Combining with the acceleration response of the structural floor under the rare earthquake, seismic protection suggestions were provided for anti-slip and anti-overturning of cultural relics in the museum. The reliability of the structure was verified through the elastic-plastic analysis under the rare earthquake, which provided a reference for the design of similar isolation structures.

Keywords:high-rise multi-tower frame structure; base isolation;  seismic protection for culture relic; performance evaluation

*中国建筑股份有限公司科技研发课题（CSCEC-2015-Z-41）。

作者简介：辛力，博士，高级工程师，一级注册结构工程师，Email:xinli1129@sina.com。