摘要
以某管架式海上养殖平台为例,计算平台-系泊系统耦合时域动力响应与系泊系统疲劳寿命,分析锚链拉力统计特性、平台运动规律、疲劳损伤成分比例等因素的影响。研究发现系泊系统动力响应具有明显的非线性特征,定常漂移力对本平台系泊系统极限载荷有重要影响,而波频振荡是产生疲劳损伤的主要因素。计算结果表明,系泊缆能够有效限制平台运动,且疲劳寿命满足设计要求,可为类似平台的设计和安全性评估提供参考。
Taking a pipe-frame offshore aquaculture platform as an example, the coupled time-domain dynamic response and the fatigue life of the platform-mooring system are calculated. The factors such as the statistical characteristics of chain tension, the regular pattern of platform motion and the composition of fatigue damage are analyzed. The study finds that the dynamic response of mooring system exhibits clear characteristics of nonlinearity. The steady drift force has an important influence on the ultimate load of the mooring system, and the wave-frequency oscillation is the main factor causing fatigue damage. The calculating results show that the mooring cable can effectively restrict the motion of the platform, and the fatigue life meets the design requirements, which can provide reference for the design and safety evaluation of similar platforms.
作者
林国珍
扈喆
张晓莹
李妍
李晓文
LIN Guozhen;HU Zhe;ZHANG Xiaoying;LI Yan;LI Xiaowen(Key Laboratory of Ships and Ocean Engineering of Fujian Province,School of Marine Engineering,Jimci University,Fujian Xiamen 361021,China)
出处
《船舶工程》
CSCD
北大核心
2020年第3期109-115,共7页
Ship Engineering
基金
国家自然科学基金(51609101)
福建省海洋经济发展补助资金项目(FJHJF-L-2018-4)
“十三五”国家海洋经济创新发展区域示范项目(FZHJ05)。
关键词
养殖平台
系泊系统
耦合动力响应
时域求解
疲劳寿命
aquaculture platform
mooring system
coupled dynamic response
time-domain solution
fatigue life
