针对悬链锚腿系泊（CALM）单点系泊系统实例，利用稳定性理论和时域仿真方法进行研究。首先对在风、浪、流作用下的单点系泊（SPM）系统进行动态稳定性分析，并使用时域仿真验证动稳性分析的有效性，接着重点研究何种风浪流组合容易使系统产生鱼尾运动，分析鱼尾运动的危害，提出并验证拖轮协助和油船螺旋桨倒车阻止鱼尾运动的可行性，最后对这2种方法相关参数进行敏感性分析。在实际工程中，通过对遭遇的环境荷载的判断，可以有效地预测鱼尾振荡的可能性，以及时采取可靠措施。
The stability theory and time domain simulation method are used to study catenary anchor leg mooring (CALM) single-point mooring system. Firstly, the dynamic stability of a single point mooring (SPM) system under the action of wind, wave and flow is analyzed, and the effectiveness of dynamic stability analysis is verified by time-domain simulation. Then we focus on which combination of wind and waves and currents is easy to cause fishtailing oscillations.Next, the harm of fishtailing oscillations is analyzed, and two methods to control the fishtailing oscillation, which are a tug boat assisting and a thruster force by stern propeller, are proposed and verified.Finally, the sensitivity analysis of the parameters of these two methods is carried out. In practical engineering, the judgment of the encountered environmental load can effectively predict the possibility of fishtail oscillation and take reliable measures in time, which has a high engineering practical value.
2022,44(2): 70-77 收稿日期：2020-09-29
DOI：10.3404/j.issn.1672-7649.2022.02.014
分类号：U661.3
作者简介：葛帅(1993-)，男，硕士研究生，研究方向为船舶与海洋工程水动力学
参考文献：
[1] 黄国樑, 藤野正隆. 关于风和潮流作用下单点系泊船体的鱼尾状摆动的研究[J]. 海洋工程, 1987(3): 1–13
[2] BERNITSAS M M, PAPOULIAS F A. Nonlinear stability and maneuvering simulation of single point mooring systems [C]//Procecdings 1st Offshore Station Keeping Symposium, Houston, Texas. 1990.
[3] CHUNG J S, BERNITSAS M M. Hydrodynamic memory effect on stability, bifurcation, and chaos of two-point mooring systems[J]. Journal Ship Research, 1997, 41: 26–44
[4] SIMOS AN, TANNURI EA, ARANHA JAP, et al. Theoretical analysis and experimental evaluation of the fishtailing phenomenon in a single-point moored tanker[C]//11th International Offshore and Polar Engineering Conference, 2001, 1: 369–374.
[5] 杜度, 李方, 马骋, 等. 潮流与风对单点系泊系统运动稳定性的影响研究[J]. 海军工程大学学报, 2007(5): 77–80+90
[6] Ping HUO, Dong jiao WANG, Kun LIU. Research on fishtailing oscillations of a single point moored vessel in shallow waters [C]// Proceedings of the Twenty-eighth International Ocean and Polar Engineering Conference, Sapporo. 2018.
[7] Dong H, LEE, Hang S CHOI. Stabilization of unstable FPSO-shuttle tanker motions [C]//Proceedings of The Twelfth International Offshore and Polar Engineering Conference, Kitakyushu. 2002.
[8] 周楠, 刘旭平, 李俊汲. CALM单点系泊系统设计综述[J]. 海洋工程装备与技术, 2017, 4(2): 102–104
[9] 刘镇方. 环境载荷下FPSO串靠外输作业的拖轮适配性研究[D]. 大连: 大连理工大学, 2018.
[10] Prediction of wind and current loads on VLCCs [M]. OCIMF. Oil Companies International Marine Forum, 1994.
[11] ABS. Rules for building and classing single point moorings [M]. American Bureau of Shipping, Houston, Texas, 2014.
[12] 王崇元. 拖带无动力船舶时拖船的使用和注意事项[J]. 航海, 2020(3): 65–68
