大梅沙酒店大堂网壳结构稳定性分析

稳定性分析在单层网壳结构设计中非常重要。本文对大梅沙酒店大堂单层网壳的稳定性进行了系统的分析。根据静力计算的结果确定杆件截面,并运用有限元分析方法,对结构进行屈曲模态分析,预测出结构屈曲荷载的上限,在考虑初始缺陷、几何非线性和材料非线性的影响下,进行荷载—位移全过程分析,从而确定了结构的极限荷载。结果表明,单层网壳稳定性分析时,应该同时考虑几何非线性和材料非线性。

Stability Analysis of Shenzhen Kingkey Dameisha Hotel Atrium Latticed Shell

Stability analysis in the design of single layer network shell structure is very important,therefore,the paper systematically analyses the single layer shell of Shenzhen Kingkey Dameisha hotel atrium.The element sections are selected by the static calculation results of the structure.The stability analysis of the structure is on the base of finite-element theory.The upper limit of buckling load is estimated after model analysis.By considering the effects of the initial defect,the geometry nonlinearity and material nonlinearity,the paper analyses the stability of the structure to determine the limit load of the structure.The results show that the critical load obtained by the finite element method in considering the geometry nonlinearity and material nonlinearity is more rational for the single layer latticed shell.