快速准确判断结构超静定次数的新方法研究

Study on a new method to determine the number of statically indeterminate structures quickly and accurately

对超静定结构进行内力分析和计算,往往要判断超静定次数,而快速准确判断结构的超静定次数,是提高解题速度和正确率的关键。简单地利用结构力学教材中所介绍的传统方法去判断,稍不注意,就容易使判定结果出现偏差,尤其是对于工程中常见的一些封闭框格结构,更是难以确定。为此,提出了一种快速准确判断结构超静定次数的新方法,即"闭合环路"法,以解决人们在此问题中的困惑。

To analyze and calculate the internal force of statically indeterminate structure,it is necessary to judge the times of statically indeterminate.It is the key to improve the speed and accuracy of solving problems to judge statically indeterminate times of structure quickly and accurately.If you judge by simply using the traditional methods introduced in the structural mechanics textbook,a slight lack of attention,it is easy to deviate from the results.In particular,it is difficult to determine some common enclosed frame structures in engineering.To this end,a new method,“closed loop”method,is proposed to judge statically indeterminate times of structures quickly and accurately so as to solve the puzzles in this problem.