提出了结构重要度及临界重要度的优化方法,给出了数学模型,结构重要度愈大,分配给基本事件的概率上限值愈小;临界重要度愈大,分配给基本事件的概率上限值愈小,利用计算机编程求最优解。 An optimization method for structural importance and critical importance was proposed, and a mathematical model was given. The greater the importance of the structure, the smaller the probability upper limit assigned to the basic event, and the greater the critical importance, the probability assigned to the basic event. The smaller the limit, the use of computer programming to find the optimal solution.