动力松弛法与力密度法在索网结构找形中的比较分析  

Comparisons between dynamic-relaxation method and force-density method for form finding of pretensioned cable roofs

作　　者：曾小飞[1] 叶继红[1] 叶冶[2] 

机构地区：[1]东南大学土木工程学院结构教育部重点实验室,江苏南京210018 [2]辽宁工学院土木系,辽宁锦州121001

出　　处：《空间结构》2003年第4期55-59,共5页Spatial Structures

摘　　要：本文结合几个典型工程算例对改进动力松弛法和改进力密度法在计算时间、收敛精度、迭代策略等方面进行了较系统的比较分析.分析说明两种方法均适用于解决大型复杂索网结构的找形问题,并可达到很高的精度,但两种方法均有各自的优缺点.The modified dynamic-relaxation method and the modified force-density method for form finding of pretensioned cable roofs are comprehensively compared and analyzed in the aspects of the calculation time, the convergence precision and the iterative strategy by analyzing some benchmark problems and big projects. It has been shown that both methods can be applied to the form finding of complex and large cable nets. The precisions of them are high, but each of them has its advantages and disadvantages.

关 键 词：索网结构 动力松弛法 力密度法 有限元法 张拉力 

分 类 号：TU351[建筑科学—结构工程]