本文采用Matlab语言编制了张弦桁架结构通用的有限元模型分析程序.通过此程序,可以快捷地得到不同几何参数的张弦桁架结构模型,并能进行杆件内力分析,分别采用SAP2000和ANSYS分析软件对其计算结果进行了验证,结果表明三者的计算结果一致.在此基础上,采用Matlab语言编制了粒子群算法优化程序,对某实际张弦桁架结构采用本文优化方法进行了优化设计,优化结果表明本文提出的优化方法具有较高的精度和较好的收敛性.最后对不同跨度的张弦桁架结构模型进行了截面优化设计,为初步设计提供了参考.%General finite element model analysis software was programmed using the language of Mailab, truss string structure models of various geometrical parameters and force analysis were conveniently received. SAP2000 and ANSYS analysis softwares were used to validate the programmed procedures, it shows that the results from three different softwares are consistent. Based on this, particle swarm optimization ( PSO) procedures were developed using Matlab language, and a truss string structure was optimized by using these optimization approach, results show that the optimization method proposed in this paper has higher accuracy and better convergence. Finally, in order to provide reference for preliminary designs, the truss string structure models of different spans were optimized.
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