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,并进行结构非线性分析,得到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。结合工程特点进行非线性静力分析、动力分析和整体稳定性分析。
The upper modelling planes of a gymnasium and a swimming pool are oval, and a suspension cable tension structure is used in roof, the two structures’maximum spans are more than 120 m. The three dimensional model including the cable roof and steel structure for bracing is built . The geometrical nonlinear analysis of the model is carried out under the different load distributions.The suspension cable structure is equivalent to the linear structure, and the simulation of the stiffness of the formed structure is used to make buckling analysis and response spectrum analysis. In combination with the engineering characteristics, the analysis of temperature and overall stability of the structure is also conducted.
出处
《钢结构》
2011年第4期6-12,共7页
Steel Construction
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
cable structures
geometric nonlinearity
structural overall stability
buckling analysis
seismic capability
