摘要
对于大跨度空间钢结构而言,整体稳定分析不可忽略。北京将台商务中心冬季花园采用网壳与拉索杂交结构,玻璃幕墙固定于拉索上。其中网壳部分由9榀空间钢拱和普通壳体杆件组成,可以看作拱壳杂交结构。本文选取了结构中跨度最长的单榀拱结构进行稳定分析,包括特征值屈曲分析及非线性全过程分析。结果表明,单拱的稳定承载力满足要求,非线性对单榀结构的稳定性能有较大影响。此外,尽管几何初始缺陷对弹性结构的稳定性能有一定影响,但对弹塑性结构的稳定性能影响不大。
Global stability analysis cannot be ignored for large-span spatial steel structures.Beijing Jiangtai Winter Garden adopts hybrid structure with latticed shell and vertical cables,on which glass curtain wall is fixed.Therein the reticulated shell is composed of 9 spatial arches and other common frames,thus it can be seen as arch-reticulated shell hybrid structure.This paper analyzed the stability of one single arch structure which has the longest span in the whole structure,including buckling analyses and non-linear full range analyses.The results showed that the stability of single arch met requirements,and the nonlinearity had great influence on the stability of single arch structure.Besides,although the initial geometric imperfection had certain effect on the elastic structure,it had little effect on the elasto-plastic one.
出处
《四川建筑科学研究》
2013年第2期1-4,共4页
Sichuan Building Science
基金
国家自然科学基金(51038006)
关键词
拱壳杂交结构
有限元分析
整体稳定性
几何非线性
材料非线性
arch-gridshell hybrid structure
finite element analyses
global stability
geometric nonlinearity
material nonlinearity
