摘要
海冰与海上结构物相互作用所产生的冰激振动可以引起结构物的疲劳失效，给海洋结构物带来严重危害。为此提出了疲劳环境、疲劳工况及疲劳子工况三个新概念，并结合冰区特点，给出了它们的定义与定量描述方法，进而提出了计算疲劳等效应力及预测疲劳寿命的新方法。该方法已编成计算软件，可用于海上结构物的设计及服役期内安全可靠性评估。
The vibration resulted from the interaction between ocean ice and offshore structures can cause the fatigue failure of offshore structures, or bring serious damage for the structures. Three new concepts of fatigue environment, fatigue condition and fatigue sub condition for fatigue analysis are presented. The definition and quantitative description of the new concepts and new methods for calculating the equifinal fatigue stress and for predicting the fatigue life are given. These methods are programmed, which will be available for the design and safety evaluation of offshore structures.
出处
《石油大学学报（自然科学版）》
EI
CSCD
1998年第6期65-67,共3页
Journal of the University of Petroleum,China(Edition of Natural Science)
