摘要
东方艺术中心玻璃幕墙单层网格钢结构支撑体系由形似花瓣的5个独立的椭球形单层网格杆系(立柱、横杆、支撑及索网)结构组成,此网格结构作为墙体垂直放置,比较特殊。对该结构进行线性稳定、无初始缺陷结构非线性稳定和有初始缺陷结构非线性稳定分析。竖向放置的网格钢结构的失稳模态为结构中下部压溃失稳,风向对稳定极限荷载有影响。宜采用弹塑性极限荷载来评价结构,同时考虑初始缺陷的影响。
The stability behavior of a large scale single-layer reticulated curtain-wall structure used in east art center of Shanghai is analysed. The curtain-wall structure is composed of five vertical ellipsoid grid shells. ANSYS is used to analyse the the stability behavior. The linear buckling, geometrical nonlinear buckling of the perfect and imperfect structure and elasto-plastic buckling are analysed and compared. The compression bucking in the centre portion and below it is the bucking mode of the vertical reticulated curtain-wall structure. The wind angle has influence on limit load. The elastoplastic limit load should be chosen to evaluate the structure and the initial flaw should be taken into account.
出处
《建筑结构》
CSCD
北大核心
2005年第12期62-64,共3页
Building Structure
关键词
单层网格结构
非线性稳定
幕墙
初始缺陷
single-layer reticulated structure
nonlinear stability
curtain-wall
imperfection
