中文摘要：

针对潜艇耐压船体结构在下潜过程中存在的下潜超深风险问题,探讨了基于风险的结构设计方法;提出了基于风险的结构设计思想.对下潜超深风险进行了定义,并依据个人、社会、经济以及环境对风险的态度,制定了基于风险的结构设计准则.采用极值I型分布分析计算了不同下潜超深的风险发生概率,结合基于风险的结构设计准则,建立了耐压船体的可靠性优化设计模型并进行计算,绘制了随着设计载荷增加耐压船体结构重量变化曲线,依据成本-效益准则对耐压船体结构的设计方案进行了决策.

英文摘要：

In this paper,a risk-based structural design method was discussed according to the risk beyond the submerged depth of submarines in the process of diving.First,the development of the structural design theory was expounded and the idea of risk-based structural design was presented.Then,the risk beyond the submerged depth was defined and the risk-based structural design criteria was developed according to the risk attitude of individuals,society,economy and the environment.Finally,the risk probability on different diving depths were calculated using the extreme value I distribution.The reliability optimization design model of the pressure hull was established and the design load curves with the increase of pressure hull structural weight was drawn.The design scheme for pressure hull was made based on the＂costbenefit＂principle.