体内张拉成形空间网格结构的形态分析——几何位移迭代法  

Form-finding Analysis of the Internal-prestressed Reticulated Space Structure Through Posttensioning:Geometrical Displacement-iteration Method

作　　者：王成[1] 张毅刚[1] 

机构地区：[1]北京工业大学空间结构研究中心,北京100124

出　　处：《北京工业大学学报》2009年第3期316-322,共7页Journal of Beijing University of Technology

摘　　要：针对体内张拉成形空间网格结构实际发展需要,从工程应用的角度定义了该类结构的3种受力状态:零状态、初始态和荷载态.在此基础上提出了一种形态分析方法——几何位移迭代法,并以一个80m跨的体内张拉成形空间网格结构为例,对其找形过程特点做了细致分析.结果表明,几何位移迭代法找形精度高、速度快,非常适合于体内张拉成形空间网格结构形态研究,而且可以保持结构的完整性.In order to put the internal-prestressed reticulated space structure through posttensioning(IRSSP) into practice,the paper firstly redefined three structure states-zero state,initial state and load state of IRSSP. The geometrical displacement iterative method is then proposed,which is based on the three states mentioned above.A detailed study on the form-finding process is carried out which based on an IRSSP with a long span of 80 m.The result shows that the geometrical displacement iterative method is of h...

关 键 词：网格结构 预应力 迭代法 形态分析 

分 类 号：TU399[建筑科学—结构工程]