桁架结构分析的拓扑变化法

通过对基内力和广义约束矩阵的定义，提出了一套新的桁架结构内力分析方法．利用拓扑变化的方法和桁架结构的受力特性，在生成结构的同时也形成了进行结构分析所需要的全部信息，进而可以方便地完成各种工况下的结构计算．该方法无需建立联立方程组，而且简单易行，便于程序化。

Topological variation for truss structure analysis

Based on the concept of basic internal force and generalized constraint matrix, a new method was proposed for calculation of the internal force of truss structures. By use of topological variation and responses of trusses, all the information needed for structure analysis was obtained at the same time of generation of the truss structure, and the structure calculation can be performed conveniently in different cases. Without requirement for establishment of simultaneous equations for solution, the method is simple in operation, and convenient in programming.