单层球面网壳整体稳定性分析

摘要

This paper made overall stability analysis on linear,perfect geometric nonlinearity,defects geometrical nonlinear and defects double nonlinear structure analysis on single layer spherical reticulated shell with span of 40 m using finite element calculation software ANSYS,made analysis and comparison on their respective stable forms and load-deflection curve,draw some conclusions.%采用有限元计算软件 ANSYS 对跨度40 m 的单层肋环型球面网壳进行了线性、完善几何非线性、缺陷几何非线性和缺陷双重非线性结构的整体稳定分析，分别比较了其各自的稳定形态及其荷载-位移曲线，并得出了一些结论。