Truss Structural System Reliability Calculation

In this paper, a method for calculating trusswork reliability is researched thoroughly. Firstly we retrospect the history of structure invalidation algorithm and structure reliability calculating method, Look around its status in quo. Secondly Analyse the method for calculating trusswork interal force while it destroying, introduce structure reliability algorithm. At last, Exemples open out the process of this method.In the analysis of trusswork internal force in the process of destroying, we based it on matrix force method. Which is adapted to caculate by computer. While calculating structure unit-state matrix [B], we use Gauss eliminating method. And then, give the principle of internal force calculating, explain its process, Establish the criterion of structure invalidation. The last examples proved its reliability compared with ANSYS .Structure reliability analysis is devided into two part: pick out main invalidation mode and caculate Trusswork reliability. In this paper, Main invalidation mode is picked out by divarication-demarcation method, Trusswork reliability is calculated by PNET method. The process of trusswork reliability is opened out by the last examples.