摘要
针对子结构为单层膜型网壳的圆柱面交叉立体桁架系巨型网格结构 ,分析了结构的构成、形体参数 ,建立了几何非线性力学模型 ,编制了相应的稳定分析程序。着重研究了整个结构的稳定性能、失稳形式 (局部失稳与整体失稳 )、局部失稳与整体失稳模态等 ,就不同的失稳形式进行了一系列的参数分析 ,研究了各参数对结构的失稳形式及极限载荷的影响 。
Reticulated mega-structure braced with single layer membranous latticed shell substructure is studied in this paper. The main-structure is built of the arched space truss and the longitudinal space truss. The construction and parameters of shape are discussed. At the same time, geometric nonlinear mechanical model is set up and the stability analysis program is developed. The stability, buckling style (overall buckling and local buckling) and overall buckling and local buckling modes are researched in detail. A series of parameters are analyzed for different buckling styles and ultimate loads. The border curves between overall and local buckling of different spans are obtained. All this work will provide guide in theory for the use of this structure.
出处
《土木工程学报》
EI
CSCD
北大核心
2005年第2期13-21,共9页
China Civil Engineering Journal
基金
湖南省自然科学基金资助项目 (0 2JJY30 1 1 )
关键词
巨型结构
膜型网壳子结构
整体稳定
局部稳定
reticulated mega-structure
membranous latticed shell substructure
overall stability
local stability
