张弦梁膜结构几何非线性分析

Geometrically Nonlinear Analysis on the Beam String Structure Composed of Membrane

针对以往对张弦梁膜结构分析时膜与张弦粱结构分开考虑导致的缺点，提出采用几何非线性有限元方法对其整体作统一分析；该方法有利于考虑弦和纵向连接结构件的应力对结构的动态影响．通过计算分析比较，证实在不均匀荷载作用下，采用整体分析是必要的．

A whole geometrically nonlinear analysis method of BSSM (Beam string structure composed of membrane) is proposed here to avoid the defect resulted from analyzing membrane and beam string structure separately. The method can consider the effects of changeable stresses of String and Stiffening member. The necessity of the whole analysis subjected to part distributed load is confirmed through computation, analysis and comparison.