2008奥运会羽毛球馆新型弦支穹顶预应力大跨度钢结构设计研究  

Design and research of the large-span steel structure of the badminton gymnasium for 2008 Olympic Games

作　　者：葛家琪[1] 王树[1] 梁海彤[1] 张爱林[2] 张国军[1] 管志忠[1] 杨霄[1] 

机构地区：[1]中国航空工业规划设计研究院,北京100011 [2]北京工业大学,北京100022

出　　处：《建筑结构学报》2007年第6期10-21,51,共13页Journal of Building Structures

基　　金：北京市科委科技奥运专项资助项目(Z0005191040111);国家自然科学基金资助项目(50678012);北京市拔尖创新人才工程资助项目(05004311200601);北京市2008工程指挥部奥运工程资助项目;城市与工程安全减灾省部共建教育部重点实验室开放基金;北京市重点实验室开放基金资助项目

摘　　要：2008奥运会羽毛球馆屋盖钢结构采用弦支穹顶结构体系,由上弦单层网壳、下弦环索与径向拉杆、竖向撑杆组成。在设计中建立屋盖钢结构和下部看台结构整体有限元计算模型进行结构分析。在综合考虑工程的重要性、结构几何力学特点、预应力损失、施工缺陷等多种因素的基础上,对恒荷载、活荷载、雪荷载、风荷载、温度作用、地震作用等工况进行组合,分别进行结构施工阶段及结构使用阶段的内力、变形和体系稳定分析。在大量计算和分析基础上,对结构几何体系和构件进行了优化设计。在设计中运用单元逐次激活技术,模拟预应力张拉施工过程,并考虑施工临时脚手架刚度的影响进行施工模拟分析。对于索撑节点采用三维实体有限元分析方法,运用接触分析技术,计算索撑节点预应力摩擦损失,并结合施工监测,确定预应力损失值;采用非线性弹簧系统,模拟索撑节点预应力损失并研究了其对整体结构的影响。Suspend-dome structure system is adopted in the roof steel structure of the badminton gymnasium for 2008 Olympic Games. The system is made up of top chord single-layer latticed shells, bottom cable, and vertical stay-strut. During the design, the whole finite element model, including the roof steel structure and the stand structure below, is established and subject to calculation and analysis. Considering the project importance, structure stress feature, construction inaccuracy, prestressing loss, architectural modeling and construction cost, etc. we assemble various load cases such as dead load, live load, snow load, wind load, temperature and earthquake, and etc. to calculate and analyze the inner force, deformation and overall stability during the structure construction phrase and the structure using phrase, optimize the structural members insuring the security of the whole structure meanwhile. During the design, the sequential element activating method is used to simulate the procedure of construction, and construction simulation analysis is conducted with the consideration of the stiffness effect of the temporary stay. The three-dimensional entity finite element analysis method and contact analysis technology is applied to calculate the prestressing loss for the cablestrut joint. In this paper, non-linear spring system is used to simulate the prestressing loss of the steel cable, and theinfluence of prestressing loss on the whole structure is studied.

关 键 词：弦支穹顶 索撑节点 模拟施工计算 摩擦损失 接触分析 稳定承载力 材料延性 

分 类 号：TU393.304[建筑科学—结构工程] TU394