自平衡预应力球面网壳结构稳定性研究

摘要

In allusion to research status that structure stability performance of self-balanced pres-tressed latticed shell assembled with elements is not explicit, using the finite element analysis method study structure stability to a large span latticed shell. The eigenvalue buckling analysis of latticed shell's used by Block-Lanczos method, and nonlinear analysis adopt consistent mode imperfection method, ob-taining the disciplines that structure stability properties of the large span prestressed latticed shell, relat-ed conclusions to the engineering design of new latticed shell are instructive.%针对单元拼装式自平衡预应力网壳的结构稳定性能尚不明确的研究现状,采用有限元分析的方法对一座大跨度球面网壳结构的稳定性能进行了研究.采用了Block - Lanczos法对网壳结构进行了特征值屈曲分析,并用一致缺陷模态法对网壳结构进行了非线性分析,从而获得大跨度自平衡预应力球面网壳结构稳定性能的规律,相关结论对新型网壳的工程设计具有指导意义.