【摘要】 本文对大庆石油会展中心椭球形单层网壳进行了全面的整体稳定分析。首先进行了线性稳定性分析 ,预测结构屈曲荷载的上限 ;然后 ,运用非线性有限元方法 ,考虑几何和材料非线性以及初始缺陷的影响 ,全面分析了网壳在各个工况荷载下的稳定性能 ,得到较准确的结果。更多还原

【Abstract】 The stability of the single-layer reticulated shell is fully analyzed. First linear stability analysis is adopted to estimate the upper limit of the buckling load. Then nonlinear stability character of the shell under varieties of load combination,including the effect of geometry and material nonlinear and the initial defect,is analyzed by nonlinear finite element method. Finally the desirable result is acquired.更多还原