索网结构找形分析研究  

Study on Form-finding Analysis of Cable-Net Structure

作　　者：谭也平[1] 王健 张谦[1] Tan Yeping;Wang Jian;Zhang Qian(College of Civil Engineering,Shenzhen University,Shenzhen,Guangdong 518060,China)

机构地区：[1]深圳大学土木工程学院,广东深圳518060

出　　处：《江西建材》2018年第9期23-24,26,共3页Jiangxi Building Materials

摘　　要：根据力密度法原理,通过结构的拓扑关系和预设的力密度值即可将传统的找形方法中的几何非线性问题线性化,使复杂的找形问题转换成求解一组线性方程组,从而避免了坐标初始值问题以及其他方法致命的收敛性问题。运用编程软件Matlab对索网结构找形编制相应的程序,运用稀疏存储结构的力密度法格式对索网结构找形进行全过程分析。结合三个工程算例验证了力密度法找形的准确性和便捷性。The principle of force density method shows that the geometric nonlinear problem in traditional form-finding methods can be linearized only by knowing the topological relationship and the preset force density value,and to transform complex problems into solving a set of linear equations.Thus,the problem of coordinate initial value and the fatal convergence problem of other methods can be avoided.Matlab is used to program the form-finding of cable-net structure,and the force density method format of sparse storage structure is used to analyze the whole process of form-finding.Combined with three engineering examples,the accuracy and convenience of force density method for form-finding are verified.

关 键 词：力密度法 找形 索网结构 数值分析 

分 类 号：TU399[建筑科学—结构工程]