摘要
浮式平台在海洋环境下安全稳定运行,需要科学设计系泊系统,且亦需考虑到系泊缆绳断裂风险.本文以OC4-DeepCwind(OC4)半潜式平台为研究对象,基于三维势流理论和辐射绕射理论,建立六锚链半潜式平台多场耦合动力学模型,并对不同工况下平台运动响应与系泊缆受力特性进行了分析.研究表明,当系泊缆未发生断裂时,季风工况下该类平台处于安全状态.但是,在台风工况下,平台位移与系泊缆受力均会增大,使得该类平台不安全,不可自存.另外,季风工况下,当单根系泊发生断裂时,该平台位移和系泊缆受力都在安全范围内.但是,当系泊缆1和5同时断裂时,平台横荡会超出安全范围.研究结果可为科学设计系泊系统提供参考.
Ensuring the safe and stable operation of floating platforms in marine environments necessitates a scientifically rigorous design of mooring systems,as well as accounting for the risk of mooring line failures.This study focuses on the OC4-DeepCwind(OC4)semisubmersible platform.By employing three-dimensional potential flow theory and radiation-diffraction theory,a multi-field coupled dynamic model of the six-mooring-line semisubmersible platform is developed.The platform's motion responses and the mechanical behavior of the mooring lines under various operational conditions are then analyzed.The study shows that when no mooring line breakage occurs,the platform remains safe under the monsoon case.However,under the typhoon case,both platform displacement and mooring line stress will increase,making the platforms unsafe.In addition,under the monsoon case,when a single mooring breaks,the displacement of the platform and the force on the mooring cable are both within a safe range.However,when mooring lines 1 and 5 break simultaneously,the platform sway will exceed the safe range.The research results can provide reference for the appropriate design of mooring systems.
作者
吴曾荣
高艳丽
王贯宇
涂佳黄
WU Zengrong;GAO Yanli;WANG Guanyu;TU Jiahuang(College of Civil Engineering,Xiangtan University,Xiangtan 411105,Hunan,China;School of Civil Engineering and Transportation,Foshan University,Foshan 528225,Guangdong,China)
出处
《力学季刊》
北大核心
2025年第2期417-428,共12页
Chinese Quarterly of Mechanics
基金
湖南省自然科学基金(2025JJ50306)
广东省基础与应用基础研究基金(2022A1515240077)。
关键词
OC4半潜式平台
六锚链系泊
锚链受力
水动力响应
OC4 semisubmersible platform
six anchor chain mooring
anchor chain force
hydrodynamic response
