摘要
定量考虑船体构件疲劳裂纹扩展和环境腐蚀对船体梁承载能力的双重衰减因素的影响 ,对船体梁的时变可靠性进行了分析 ,列出了时变可靠性分析公式并编制了相应的计算程序 .以一艘大型油船的结构可靠性为例 ,表明疲劳裂纹和环境腐蚀在第二个特检年 ( 1 0 a)之后对船体梁承载能力有显著的影响 ,此时开展详细的船体结构检查对保证船舶营运的安全性具有重要的意义 .
The time variant reliability analysis of ship hull girders subjected to the degradations of fatigue and corrosion is quantitatively carried out in this paper.The analytical formulations are derived and simple program is compiled.As a case study,the time variant reliability of a VLCC tank is calculated.It shows that the degradation effects of fatigue and corrosion are very important for the load capacity calculation of thsip hull girders.After the second special inspection (10 years),the detailed inspection should be done in order to guarantee the safety of ship navigation.
出处
《武汉交通科技大学学报》
2000年第6期606-610,共5页
Journal of Wuhan University of Technology(Transportation Science & Engineering)
基金
国家自然科学基金资助(批准号:A10072043)。
关键词
船舶结构
结构时变可靠性
疲劳
腐蚀
ship hull girders
time variant structural reliability
fatigue
corrosion
