（北京市建筑设计研究院有限公司， 北京 100045）

［摘要］国家体育馆新建训练馆为大跨度楼盖结构，为提高其抗震性能、降低温度效应，在主桁架两端底、东西两侧柱顶及剪力墙的牛腿上设置摩擦摆隔震支座，同时在桁架支座处对称设置电涡流阻尼器。针对新建训练馆采用的摩擦摆隔震支座与电涡流阻尼器组合隔震系统，进行了隔震结构在非抗震工况下的受力分析，以及小震、中震、大震下的非线性时程分析。隔震分析结果表明：摩擦摆隔震支座可大幅降低结构在地震作用下的受力，提高结构的抗震性能； 对于超长、支承刚度较大的结构，可显著减小结构的温度效应。通过采用电涡流阻尼器，避免了油缸漏油问题，提高了隔震系统的耐久性。

［关键词］国家体育馆新建训练馆； 摩擦摆隔震支座； 楼盖结构； 大跨结构； 电涡流阻尼器； 隔震设计

中图分类号：TU318文献标识码：A文章编号：1002-848X(2020)20-0001-07

Design of friction pendulum vibration isolation for the new training hall of the National Stadium for 2022 Winter Olympics

ZHOU Zhongfa, ZHU Zhongyi, ZHOU Sun, LI Pei, CAI Chunjie

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

Abstract:The new training hall of the National Stadium is a long span floor structure. In order to improve its seismic performance and reduce temperature effects, friction pendulum bearings were installed on the bottom of the main truss, the top of the columns on the east and west sides, and the corbels of the shear wall. Furthermore, eddy current dampers were installed symmetrically at the truss support. For the friction pendulumvibration isolation bearing and eddy current damper combined isolation system used in the newly built training hall, the force analysis of the seismic isolation structure under non-seismic conditions, as well as the nonlinear time history analysis under small, medium and large earthquakes. The results of isolation analysis show that the friction pendulum isolation vibration isolation bearing can greatly reduce the seismic force of the structure and improve the seismic performance of the structure. The temperature effect of the structure can be significantly reduced for the super long structure with large supporting stiffness. By using eddy current dampers, the oil leakage problem is avoided and the durability of the isolation system is improved.

Keywords:the new training hall of the National Stadium; friction pendulum vibration isolation bearing; floor structure; long span structure; eddy current damper; isolated design

作者简介：周忠发，硕士，高级工程师，一级注册结构工程师，Email：254149547@qq.com。