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文章采用线性屈曲、几何非线性及材料非线性和几何非线性耦合的分析方法,对某大跨度单层球面网壳进行极限承载力分析。分析表明,材料非线性对网壳结构的承载力均有较大的影响,采用线性屈曲、几何非线性分析方法均高估网壳结构的极限承载力,因此,要准确评估出网壳结构的极限承载力,就必须全面考虑网壳结构的几何非线性及材料非线性的影响。
In this paper, the ultimate bearing capacity of a long-span single-layer reticular dome was analyzed by means of linear buckling, geometric nonlinearity and material nonlinearity and geometric nonlinear coupling analysis. The analysis shows that the material nonlinearity has a great influence on the bearing capacity of the reticulated shell structure, and the linear buckling and geometric nonlinear analysis methods all overestimate the ultimate bearing capacity of the reticulated shell structure. Therefore, Ultimate bearing capacity, we must fully consider the geometric nonlinearity of the reticulated shell structure and material nonlinear effects.