索膜结构的动力松弛法分析  

Analysis of Cable-membrane Structures by DynamicRelaxation Method

作　　者：李重阳[1] 魏德敏[1] 

机构地区：[1]华南理工大学土木工程系,广东广州510640

出　　处：《华南理工大学学报（自然科学版）》2004年第6期80-84,共5页Journal of South China University of Technology(Natural Science Edition)

基　　金：广东省自然科学基金项目(020940)

摘　　要：根据索膜结构几何非线性的特点,以动力松弛法为迭代方法,推导出在均布预张力作用下的找形公式以及静荷载作用下的受力计算公式.然后绘制出多种预张力、矢跨比时典型结构的位移-荷载曲线,通过比较发现,提高矢跨比可以明显减小结构的位移;而通过提高预张力的方法,其结构位移的量减少不大.According to the geometric nonlinearity of cable-membrane structures, formulas of the form-finding under uniform pre-tensioned force and the behavior analysis under static loads were derived with the dynamic relaxation method as the iterative method. Displacement-load curves of a typical structure with several pre-tensioned forces and height-spans were drawn, by the comparison of which it is found that the increase of height-span will greatly decrease the displacement, while the deduction is relatively small when increasing the pre-tensioned force.

关 键 词：索膜结构 找形分析 静力分析 动力松弛法 

分 类 号：TU351[建筑科学—结构工程]