船舶结构疲劳强度校核研究现状及我国的进展

对考虑腐蚀、疲劳损伤影响下船体结构可靠性分析层面的研究现状进行梳理和概述。通过综述发现：近年来，船体结构可靠性分析的对象已由拟建船体向现役船体结构方向扩展，且研究重心开始由腐蚀、疲劳损伤单一影响下的可靠性分析向两者交互作用影响下的可靠性分析方向发展。未来开展腐蚀、疲劳损伤下船体结构可靠性研究工作的重点将主要体现在以下4个方面：1）点蚀损伤船体结构破坏机理及对应的评估方法研究；2）腐蚀、疲劳损伤交互作用下的船体结构破坏机理研究；3）基于有限的实船损伤勘验数据，开展合理、可行的可靠性评估方法研究，进行船体结构全寿命周期内综合损伤下的可靠性分析；4）建立不同服役环境、服役期限的实船腐蚀、疲劳损伤数据库。

Analysis of the accident of the MV Nakhodka. Part 1. Estimation of wave loads

This paper researches and summarizes the state of the art concerning the reliability analysis of hull structures under the influence of corrosion and fatigue damage. It is found through a literature survey that the objects of hull structure reliability analyses have gradually transferred from the design phase to the in-service phase of hull structures. Furthermore, the research focus develops from the single influence of corrosion and fatigue damage to its interaction effect. In the future, the key points of hull structure reliability studies will focus on the following four aspects:1) research into the influence of pitting corrosion damage on hull structure failure mechanisms and corresponding evaluation methods; 2) research into hull structure failure mechanisms under the interaction of corrosion and fatigue damage; 3) presenting a reliability evaluation method that can overcome excessive reliance on sample data, and establishing a hull structure reliability analysis model based on the damage testing data of real ships; and 4) establishing a database on the corrosion and fatigue damage of real ships under different service environments and periods.