极地船舶冰载荷随机特性研究综述

Review on random nature of ice loads for Arctic ships

本文以极地船舶实测冰载荷为基础,对冰载荷随机特性进行研究,揭示冰载荷随机特性产生的原因,描述冰载荷幅值的概率分布情况,引入结构可靠性理论对船舶冰载荷极值分布以及冰载荷引起的疲劳损伤进行研究。研究结果可为极地船舶结构物可靠性提供指导与参考。

In this paper,the stochastic properties of ship ice loads was studied in detail on the basis of the data collected onboard KV Svalbard.Specifically,the reasons that cause the randomness of ice-induced loads were explained in detail.Probabilistic models,such as the Weibull,lognormal,exponential and three-parameter exponential were introduced in order to describe the distribution of ice load peaks.The theory of structural reliability was introduced in order to study the extreme value distribution of ice loads and to evalu-ate the fatigue damage caused by ice loads.Current study could provide valuable guidance and reference for the structural reliability of Arctic ships.