中国舰船研究2018，Vol.13Issue(1)：53-59,7.DOI:10.3969/j.issn.1673-3185.2018.01.008
江、海波浪联合作用下的江海直达船疲劳性能研究
Investigation into fatigue performance of river- sea ships subjected to the combined effect of wave loads
摘要
Abstract
[Objectives]Fatigue damage is considered to be common in marine engineering. River-sea ship is subjected to complex wave loads,which consist of river and sea. Its structural requirements lower than the sea,higher than the river boat.Fatigue strength of this type's structure needs further investigation. [Methods]A container ship is taken as the research object in this paper.The fatigue strength of river-sea ship is based on spectral analysis, combined with the China's coastal long-term wave loads data. And the fatigue damage rules of different checking points under different conditions were obtained and the differences of fatigue damage on the distribution of short-term sea conditions were studied.[Results] Analysis of the results shows that the fatigue damage in the sea area is mainly caused by the wave contribution of 2.5-5 m of significant wave height and 6-8 s of zero-crossing period.[Conclusions] Considering the combined effect of the river-sea wave loads, the fatigue life of the structure of the target ship is significantly increased. So only consider the sea wave environment is too conservative. The results provide the basis for the structural fatigue design of river-sea ship in the future.关键词
江海直达船/疲劳损伤/谱分析法/内河波浪Key words
river-sea ship/fatigue damage/spectrum method/inland-river wave分类
交通工程引用本文复制引用
王伟,许梦娜,谢永和,许飞,何单干..江、海波浪联合作用下的江海直达船疲劳性能研究[J].中国舰船研究,2018,13(1):53-59,7.基金项目
国家自然科学基金资助项目(51409232) （51409232）
浙江省自然科学基金资助项目(LQ13E090002) （LQ13E090002）
舟山市科技计划项目(2016C12001) （2016C12001）
