单层球面网壳结构的力学性能研究

Study on Mechanical Properties of Single-layer Spherical Latticed Shells

基于非线性有限元方法 ,研究了单层球面网壳结构的内力分布规律及结构变形特点 ,并针对力学计算模型、结构矢跨比、外荷载分布等主要因素 ,研究其对单层网壳结构力学性状的影响情况。得出了工程中常用的单层球面网壳的荷载传递方式以及存在于结构内的力流方向 ,为在工程设计中控制力流 ,并设计力流的导向提供理论指导。

This investigation is concerned with the study on displacements and internal forces of single-layer spherical latticed shells under loads. Effects of structural main parameters, such as the mechanical model, the ratio of rise-span, and the load distribution on mechanical behaviors of the structures are researched in detail. Here, the ways of delivering load and distributing forces in the structures are drawn. The results are valuable in view of mechanical performance research and engineering design of single-layer spherical latticed shells.