不同活荷载分布的单层椭圆抛物面网壳稳定性分析

On stability analysis of single layer elliptical paraboloid latticed shells with different live loads distribution

以湖北孝感某实际工程的15.1 m×30 m跨度的单层椭圆抛物面网壳为研究对象,基于大型通用有限元程序ANSYS,分4种不同活荷载分布情况对网壳的非线性稳定性能进行了系统的分析,求出了网壳的屈曲荷载系数和网壳稳定极限承载力,研究成果对于单层椭圆抛物面稳定分析具有一定的理论参考价值。

Taking the 15. 1 m × 30 m span single layer elliptical paraboloid latticed shells of some project in Xiaogan city of Hubei as the research object,the paper has the systematic analysis of the non-linear stability performance of the shells with four kinds of distributions of the live load based on the large common finite element program ANSYS,achieves the buckling load coefficient and ultimate bearing capacity of the shell stabil-ity,so it has certain theoretic reference value for the stability analysis of the single layer elliptica paraboloid.