2008奥运会羽毛球馆弦支穹顶结构整体稳定性能分析研究  

The overall stability analysis of the suspend-dome structure system of the badm inton gymnasium for 2008 O lympic Games

作　　者：葛家琪[1] 张国军[1] 王树[1] 张爱林[2] 梁海彤[1] 管志忠[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22-30,44,共10页Journal of Building Structures

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);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;北京市拔尖创新人才工程资助项目(05004311200601)

摘　　要：2008奥运会羽毛球馆屋面钢结构采用弦支穹顶结构体系。该体系为半柔性结构,结构的整体稳定性能是该类结构体系设计选型的控制因素。弦支穹顶结构具有屈曲特征值非常密集且为局部失稳屈曲模态的特点。本文重点对计算方法、材料弹塑性、节点构造以及预应力损失等因素对弦支穹顶结构整体稳定承载力计算的影响进行分析研究,研究表明荷载子步数、材料非线性以及索撑节点构造对奥运会羽毛球馆弦支穹顶结构整体稳定均有较大的影响。对基于结构整体稳定安全的大跨度钢结构性能化设计进行了初步探讨,提出了整体结构体系屈曲稳定承载力系数的建议取值。Suspend-dome structure, which is a kind of semi-flexible structure, is applied in the roof steel structure of the badminton gymnasium for 2008 Olympic Games. The overall stability of the structure is a dominating factor during the design. Suspend-dome structure is featured by close buckling eigenvalues and local buckling modes. This paper attempts to analyze the effect of calculation method, material elastic-plasticity, connection detail and prestressing loss on the overall stability of suspend-dome. The study indicates that load substep, material elastic-plasticity and the cable-strut joint have significant effect on the overall stability of the suspend-dome of the badminton gymnasium for 2008 Olympic Games. Finally, a long-span steel structures performance design based on structural overall stability is presented and the overall stability coefficient is suggested.

关 键 词：弦支穹顶 初始几何缺陷 材料弹塑性 索撑节点 稳定承载力 预应力损失 

分 类 号：TU393.3[建筑科学—结构工程] TU394