中长周期波浪作用下的系泊船舶响应特性研究  

Response characteristics of moored ships under medium tolong period wave action

作　　者：刘擎波[1] 谭忠华 沈文君 LIU Qing-bo;TAN Zhong-hua;SHEN Wen-jun(CCCC First Harbor Consultants Co.,Ltd.,Tianjin 300220,China;Tianjin Research Institute for Water Transport Engineering,M.O.T.,Tianjin 300456,China)

机构地区：[1]中交第一航务工程勘察设计院有限公司,天津300220 [2]交通运输部天津水运工程科学研究所,天津300456

出　　处：《中国港湾建设》2023年第11期31-36,共6页China Harbour Engineering

基　　金：国家重点研发计划(2022YFB2602301);国家自然科学基金联合基金项目(U2106223);中央级科研院所基本科研业务费资助项目(TKS20210108)。

摘　　要：基于时域耦合模型,采用数值分析方法研究了系泊船舶在中长周期波浪作用下的响应特性。考虑缆绳和护舷的非线性特性,建立了船舶-缆绳-护舷的三维时域分析模型,分析了该耦合系统的运动响应特性,讨论了不同周期以及不同装载状态对六自由度运动量、缆绳拉力等参数的影响规律。计算结果表明:在满载和压载情况下,除横摇运动外,其他5个自由度的运动量基本都随着周期的增大逐渐增大,谱峰周期17 s时满载和压载的横摇运动分别为1.71°和0.93°,略大于15 s和19 s的数值;在满载和压载情况下,缆绳拉力明显随着波浪周期的增大逐渐增大,且最大受力出现的位置均在艏横缆和艉横缆上,在作业过程中应予以重视。综上,系泊系统的动力响应对长周期波浪极为敏感,建议密切关注工程区域的波浪情况,以保障码头作业的安全性。Based on the time domain coupled model,the response characteristics of moored ships under the action of wave with medium to long period was studied.Considering the nonlinear characteristics of the mooring lines and fenders,a three-dimensional time domain analysis model of ship-mooring system-fender was established.The motion response characteristics of the coupled system were analyzed,and the influence rules of different periods and loading states on parameters such as six degrees of freedom motion and cable tension were discussed.The calculation results shows that,under laden and ballast conditions,except for roll motion,the motion of the other five degrees of freedom gradually increases with the increase of the wave period.At the peak period of 17 seconds,the roll motion of laden condition and ballast condition are 1.71° and 0.93°,respectively,slightly greater than the values of 15 seconds and 19 seconds.Furthermore,the tension of the mooring line gradually increases with the increase of wave period under laden and ballast conditions,and the positions where the maximum force occurs are on the breast-fore and breast-aft lines,which should be taken seriously during the operation process.In summary,the dynamic response of the mooring system is particularly sensitive to the long period waves.It is recommended to closely monitor the wave conditions in the project area to ensure the safety of port operations.

关 键 词：时域耦合模型 中长周期波 装载状态 系泊作业 

分 类 号：U661.3[交通运输工程—船舶及航道工程]