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...
出处
《北京工业大学学报》
EI
CAS
CSCD
北大核心
2009年第3期316-322,共7页
Journal of Beijing University of Technology
关键词
网格结构
预应力
迭代法
形态分析
shells（structures）
prestressing
iterative methods
form-finding analysis
