【摘要】 本文应用结构可靠性分析方法 ,分别以船体梁和船体纵向加筋板极限承载能力为失效模式 ,对船体结构进行了安全评估和可靠性设计。应用所开发的新的改进可靠性计算方法 ,计算了基本物理量的不确定性对船体结构极限强度函数统计特征的影响 ,同时结合所开发的用于直接估算船体梁和加筋板极限强度的工程实用计算方法 ,确定出不同船体结构的失效概率和设计目标安全指数 ,推导了局部安全因子 ,可以进行船体结构的可靠性设计与再评估。更多还原

【Abstract】 In this paper,emphasis is given to the ultimate failure modes of the hull girder and longitudinally stiffened panels.Based on the results of reliability analysis,target reliability indices are given and partial safety factors in the reliability-based structural design code formats are derived for different ship types.The proposed design method has been successfully applied to redesign of the present ship types and showed the reasonable results.更多还原