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按照海洋钢结构的疲劳与断裂失效模式，建立起失效函数，并应用求解含有模糊变量的失效函数的基本方法，分别给出了模糊可靠性的分析方法；给出了应用S－N曲线方法及断裂刀学分析疲劳模糊可靠性以及在极大载荷作用下断裂的模糊可靠性分析的方法。
According to the fatigue and failure modes of offshore steel structure, the failure function is established and the basic method of solving the failure function with fuzzy variables is given. The methods of fuzzy reliability are given respectively. The application of S-N curve method and Fracture knife analysis of fatigue reliability and fuzzy reliability analysis of the fracture under the action of the maximum load.