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（北京市建筑設計研究院有限公司， 北京 100045）
［摘要］國家體育館新建訓練館為大跨度樓蓋結(jié)構，為提高其抗震性能、降低溫度效應，在主桁架兩端底、東西兩側(cè)柱頂及剪力墻的牛腿上設置摩擦擺隔震支座，同時在桁架支座處對稱設置電渦流阻尼器。針對新建訓練館采用的摩擦擺隔震支座與電渦流阻尼器組合隔震系統(tǒng)，進行了隔震結(jié)構在非抗震工況下的受力分析，以及小震、中震、大震下的非線性時程分析。隔震分析結(jié)果表明：摩擦擺隔震支座可大幅降低結(jié)構在地震作用下的受力，提高結(jié)構的抗震性能； 對于超長、支承剛度較大的結(jié)構，可顯著減小結(jié)構的溫度效應。通過采用電渦流阻尼器，避免了油缸漏油問題，提高了隔震系統(tǒng)的耐久性。
［關鍵詞］國家體育館新建訓練館； 摩擦擺隔震支座； 樓蓋結(jié)構； 大跨結(jié)構； 電渦流阻尼器； 隔震設計
中圖分類號：TU318文獻標識碼：A文章編號：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
作者簡介：周忠發(fā)，碩士，高級工程師，一級注冊結(jié)構工程師，Email：254149547@qq.com。
