摘要
船舶停靠港口时受环境载荷、护舷力和系缆力作用,系泊缆的非线性变形及船体与靠垫间的碰撞导致系泊系统刚度不连续,展现出明显的非线性特征。当前系泊作业多依赖现场经验,导致系缆受力绷断等事故时有发生。文章建立了考虑时变环境载荷、护舷力和系缆非线性恢复力的船舶系泊平面运动模型,并通过状态空间方程简化卷积项,利用相图、分岔图和庞加莱映射分析了不同工况下的系泊系统动态响应。研究结果表明,船舶系泊系统的响应与波浪激励频率密切相关,系统表现出显著的非线性动力学特征,且随着入射频率的增大,系缆力减小,护舷冲击加剧,因此需调整预紧力以维持系统稳定。
When a vessel is moored in a port,it is subjected to environmental loads,fender forces,and mooring forces.The nonlinear deformation of mooring lines and intermittent collisions between the hull and fenders create discontinuous stiffness in the mooring system,resulting in typical nonlinear characteristics.Current mooring operations heavily rely on on-site experience,leading to frequent accidents such as mooring lines breaking under load.This paper establishes a planar motion model of the vessel mooring system considering time-varying environmental loads,fender forces,and the nonlinear restoring force of mooring lines,and simplifies the convolution terms using state-space equations.Phase diagrams,bifurcation diagrams,and Poincarémaps are used to analyze the dynamic response of the mooring system under different operating conditions.The results show that the response of the vessel mooring system is highly correlated with the wave excitation frequency.The system exhibits significant nonlinear dynamic characteristics.As the incident frequency increases,the mooring force decreases and the fender impact intensifies.It is necessary to adjust the pre-tension force in time to maintain system stability.
作者
崔春英
周志鹏
张大伟
韩荣鑫
杨春慧
王敏
赵林
常宗瑜
王海波
CUI Chun-ying;ZHOU Zhi-peng;ZHANG Da-wei;HAN Rong-xin;YANG Chun-hui;WANG Min;ZHAO Lin;CHANG Zong-yu;WANG Hai-bo(Sinopec Qingdao Liquefied Natural Gas Co.,Ltd.,Qingdao,Shandong 266400,China;College of Engineering,Ocean University of China,Qingdao,Shandong 266100,China)
出处
《中国港湾建设》
2025年第12期25-34,共10页
China Harbour Engineering
基金
企事业单位委托技术开发(35150024-23-ZC0699-0002)
国家重点研发计划(2022YFB2602301)。
