深圳湾体育中心钢结构屋盖稳定性能研究  

Research on the Stability of Steel Structure for Shenzhen Bay Sports Center

作　　者：郭宇飞[1] 陈彬磊[1] 甘明[1] 

机构地区：[1]北京市建筑设计研究院有限公司,北京100045

出　　处：《建筑钢结构进展》2015年第4期43-47,共5页Progress in Steel Building Structures

摘　　要：深圳湾体育中心钢结构屋盖为超大跨度空间结构,由单层网壳、双层曲面网架及竖向支撑系统构成。单层网壳为复杂的空间曲面网格结构,采用箱形弯扭构件编织而成的四边形网格构成。首先基于弹性屈曲分析方法,深入地研究了结构的失稳模态和成因;其次,通过全过程跟踪结构的平衡路径,对结构非线性弹性和弹塑性稳定性能进行了研究,揭示了该类网壳结构的特殊失稳机理,提出针对该工程网壳结构的稳定设计准则;最后,采用有限元对网壳的局部稳定进行了分析,基于分析结果给出了网壳构件的计算长度系数取值。The steel roof of Shenzhen Bay Sports Center is a super long g〈 large span spatial structure, which is composed of single-layer latticed shell, double-layer spatial grid structures and vertical support system. The single-layer latticed shell is a complex spatial structure which is built using quadrilateral grids with flexual-torsional box-section beams. In this paper, structural buckling modes and causes are studied firstly, utilizing linear elastic buckling analysis. Then nonlinear elastic and elasto-plastic stability of the roof structure are evaluated by tracking the whole equilibrium path of structure. The analysis results indicate the roof structure might have a special instability mechanism. A stability design criteria is proposed for the construction of the roof structure. Finally, local stability of latticed shell is analyzed utilizing finite element method. Based on the analysis results, the coefficients of effective length for latticed shell members are proposed.

关 键 词：单层网壳 屈曲 整体稳定 局部稳定 非线性 

分 类 号：TU311.2[建筑科学—结构工程] TU393.3