大跨椭圆形辐射式双层悬索结构分析

[摘要] 某体育馆、游泳馆上部建筑造型平面呈椭圆形，屋面结构采用悬索张拉结构，两馆最大跨度均超过120m。建立屋盖索结构和周边支撑钢结构有限元模型进行结构非线性分析，分析结构在不同荷载分布情况下的几何非线性计算结果。将悬索结构等效成线性结构，模拟索张拉后形成的结构刚度以此作为特征值分析和反应谱分析依据。结合工程特点进行温度分析和整体稳定性分析。
[关键词] 索结构；几何非线性；结构整体稳定；屈曲分析；抗震性能

Abstract：A gymnasium, swimming pool upper building modelling plane is an oval, which suspension cable tension structure is used in roof, the two structures’ maximum span are more than 120m. The three dimensional model including the cable roof and steel structure for bracing is built . The geometrical nonlinear analysis of the model above is carried out under the different load distribution situation. The suspension cable structure is equivalent to the linear structur ,simulate formation structure stiffness is used to make buckling analysis and response spectrum analysis. In combination with the engineering characteristics, temperature and overall stability analysis to the structure is studied.
Keywords: cable structures; geometric nonlinearity; structural overall stability; buckling mode;seismic capability

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20110505-徐珂论文-大跨椭圆形辐射式双层悬索结构分析.pdf