海流对半潜式平台拖航运动响应和拖缆张力影响研究  

Influence of current velocity and flow angle on the motion response and towing tension of semi-submersible drilling platforms under towing conditions

作　　者：张涛 白旭[1] 栗铭鑫 ZHANG Tao;BAI Xu;LI Ming-xin(School of Naval Architecture and Ocean Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,China)

机构地区：[1]江苏科技大学船舶与海洋工程学院,江苏镇江212003

出　　处：《船舶力学》2025年第2期209-218,共10页Journal of Ship Mechanics

基　　金：国家自然科学基金资助项目(42276225);教育部产学合作协同育人项目(231103416220931);江苏省研究生科研与实践创新计划项目(SJCX22-1959)。

摘　　要：为准确评估不规则海流载荷对半潜平台拖航作业安全性的影响,本文基于耦合时域分析理论和势流理论,通过半潜平台-拖缆-拖船耦合动力学模型,对相同波浪环境和拖航速度下不同的海流速度和流向角对半潜平台拖航运动响应及拖缆张力的影响进行分析。研究表明:风浪条件一定的情况下,海流速度和流向角对平台垂荡和纵摇影响较小,对横摇和拖缆张力影响较大;随着流速和流向角的增大,平台垂荡逐渐增大且增幅不断扩大;不同流速和流向角下的平台横摇和纵摇角都在±3.5°内波动;拖缆张力最大值在流向角90°时取得,因此拖航过程中应避免航向与流向呈90°夹角,且当流速达到1 m/s时不宜进行拖航。In order to accurately evaluate the influence of irregular current load on the safety of semi-submersible platform towing operation,based on the coupled time-domain analysis theory and potential flow theory,this paper presents an analysis of the influence of different current velocities and flow angles on the dynamic response and towing tension of semi-submersible platform towing under the same wave environment and towing speed through the semi-submersible platform-towing-tug coupling dynamic model.The results show that under certain wind and wave conditions,the current velocity and flow direction angle have little influence on the heave and pitch of the platform,but have great influence on the roll and towing tension.With the increase of flow velocity and flow direction angle,the platform heave gradually increases,with the platform roll and pitch angles under different flow velocities and flow angles fluctuating within±3.5°.The maximum towing tension is obtained when the flow angle is 90°.Therefore,the angle of 90°between the heading and the flow direction should be avoided during the towing process,and it is not suitable for towing when the flow rate reaches 1 m/s.

关 键 词：海流速度 流向角 半潜平台 运动响应 拖缆张力 

分 类 号：U675.91[交通运输工程—船舶及航道工程]