半刚性连接球面网壳结构的动力分析  

Dynamic analysis of grid shell structures with semi-rigid connections

作　　者：谢志红[1] 常晓霞[2] 刘锋[2] 李丽娟[2] 

机构地区：[1]广州航海高等专科学校,广东广州510725 [2]广东工业大学土木与交通工程学院,广东广州510006

出　　处：《空间结构》2009年第2期42-47,共6页Spatial Structures

基　　金：国家自然科学基金资助项目(10772052);广东省自然科学基金资助项目(06104655;8151009001000042)

摘　　要：通过半刚性节点模型,利用有限元方法对球面网壳结构进行动力分析.建立了半刚性情形下单元刚度矩阵,通过求解特征值问题,得到半刚性球面网壳结构自振特性规律,并与理想刚接及理想铰接情形进行了对比.采用时程分析法对球面网壳进行了水平地震作用下的分析计算,比较了半刚性节点模型所得结果与理想刚接及理想铰情形的异同,说明使用半刚性模型进行结构计算分析的合理性.论文结论对网壳结构的工程设计及施工有一定的参考价值.The finite element method is used to analyze the dynamic characteristics of the grid shell structures by a semi-rigid node model. The element＇s stiffness matrix is established for the semi-rigid structures. The natural vibration characteristic is obtained by solving the eigen-value equations. The displacement results of semi-rigid structures are compared with that of the perfect hinged and complete rigid structures. The time-history method is utilized to get the horizontal seismic response and these three structures, i.e. semi-rigid, perfect hinged and complete rigid structures are analyzed and compared. The simulation results show the rationality of semi-rigid model for practical structure analysis. The conclusion of this paper can benefit the design and construction of spatial grid structures.

关 键 词：半刚性连接 球面网壳 自振特性 地震响应 

分 类 号：TU313.3[建筑科学—结构工程]