船体梁的总纵弯曲失效是船舶最严重的破坏事件.本文引入随机过程理论,确定表征船舶总纵弯曲载荷和强度各随机变量的概率分布及统计特征.针对船体梁总纵弯曲的失效模式,利用JC法、复合形法及MonteCarlo法对船体结构强度进行可靠性分析,并对结果进行对比分析,都较好地满足了精度要求,为船舶总纵强度可靠性分析提供理论依据.%As the hull girder longitudinal bending failure is the most severe damage events, according to the theory of stochastic processes, the probability distribution and statistical characteristic of random variables about loads and strength of hull are determined and considering yield invalidation mode of overall longitudinal strength of hull, JC method, Complex method, Monte Carlo method is presented to carry out reliability analysis of overall longitudinal strength of hull. At last, reliability evaluation of overall longitudinal strength of a certain ship is carried out by using these paper's method, then analysis is made based on evaluation results, and satisty the requirement of accuraly, whith provides por the ship's longitudinal strength reliability analysis theory basis.
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