2008奥运羽毛球馆新型预应力弦支穹顶结构动力特性及地震响应分析  

RESEARCH ON DYNAMIC CHARACTERISTICS AND SEISMIC RESPONSE OF THE NEW SUSPEND-DOME STRUCTURE OF BADMINTON GYMNASIUM FOR 2008 OLYMPIC GAMES

作　　者：张爱林[1] 张庆亮[1] 王冬梅[1] 王树 

机构地区：[1]北京工业大学,北京100124 [2]中国航空工业设计研究院,北京100011

出　　处：《钢结构》2008年第6期1-6,共6页Steel Construction

基　　金：国家自然科学基金资助项目(50678012);北京市科委科技奥运专项资助项目(Z0005191040111);北京市拔尖创新人才资助项目(05004311200601)

摘　　要：奥运羽毛球馆弦支穹顶直径93m,为目前世界跨度最大的弦支穹顶结构。对其建立有限元模型,进行动力特性分析,提取结构前60阶自振频率和模态振型得出,结构模态频率密集,振型以中间张弦穹顶竖向振动为主等特点;合理选取地震波对结构进行水平和竖向地震时程分析,提取结构上部网壳与下部索杆在地震作用下的动内力变化数值,并与反应谱法结果进行比较,得出结构径向杆件地震动反应最大,水平向地震起控制作用等特点,可为相关结构的抗震设计提供参考。The steel roof suspend-dome structure of the badminton gymnasium is the maximal suspend dome structure in China by now, the maximal diameter of it is 93 meter. A finite element model of the structure is set up and the analysis and research on the dynamic characteristics of the structure are done; the forward 60 natural frequency of vibration is extracted, and then it is concluded that the model has closely distributed modes, more vertical modes and many symmetrical modes. A proper seismic wave is chosen to make seismic time history analysis on horizontal direction and vertical direction, themoving inner force of the whole structure is obtained and the results are compared with those of the response spectrum method. It is also concluded that the radial braces and members have maximal response in seismic action and horizontal seism has a control action , etc. Which may be a reference for project seismic design.

关 键 词：弦支穹顶 模态分析 地震渡 时程分析 反应谱分析 

分 类 号：TU399[建筑科学—结构工程]