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本文比较系统地研究了网架结构极限承载能力的追踪分析方法,并编制了相应的电算分析程序。运用这种方法可以确定各种形式网架的极限承载能力,并且还可以描绘出网架在杆件逐一破坏以后的工作形态。本文运用所述方法对正放四角锥网架进行了算例分析,同时还通过网架摸型试验进行了定性比较。
This paper systematically studies the tracking analysis method of the ultimate load carrying capacity of the grid structure, and compiles the corresponding computerized analysis program. Using this method, it is possible to determine the ultimate load-carrying capacity of various types of grids, and also to describe the work pattern of grids after the bars are destroyed one by one. In this paper, we use the method to carry out a numerical example analysis of the square pyramid grid. At the same time, qualitative comparisons are made by the grid-type test.