风浪流载荷下超大型海洋平台双船拆解系统运动特性数值模拟  

Numerical simulation of motion characteristics of a twin-ship dismantling system for ultra-large offshore platform under wind,wave and current load

作　　者：刘永泽 刘夕全 赵鹏飞 吕涛 任少飞[1] LIU Yong-ze;LIU Xi-quan;ZHAO Peng-fei;LV Tao;REN Shao-fei(College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China;Lankun Marine(Shandong)Co.Ltd.,Jinan 250000,China;Shandong Offshore Equipment Co.Ltd.,Qingdao 266000,China)

机构地区：[1]哈尔滨工程大学船舶工程学院,黑龙江哈尔滨150001 [2]山东海洋蓝鲲运营有限公司,山东济南250000 [3]山东海洋工程装备有限公司,山东青岛266000

出　　处：《舰船科学技术》2021年第9期122-127,共6页Ship Science and Technology

基　　金：工信部高技术船舶科研项目(MC-201713-H02)。

摘　　要：基于Sesam软件研究超大型海洋平台双船拆解系统在风浪流载荷下的运动特性,重点分析双船拆解系统与单个拆解船在风浪流载荷下运动差异,并给出双船拆解系统运动短期预报。首先通过频域分析得到双船拆解系统和单个拆解船在波浪载荷下运动响应幅值,在此基础上进行时域分析,得到双船拆解系统和单个拆解船在风浪流载荷下的六自由度运动时历曲线。数值模拟结果表明:双船拆解系统由于结构的对称性,在风浪流载荷下的横摇和首摇运动远小于拆解船,横摇和首摇扰动减小后大部分推力可用来修正纵荡和横荡偏移,从而使双船拆解系统在风浪流载荷下六自由度运动均小于单个拆解船;由于双船拆解系统水下部分为双体结构,双船拆解系统对波浪频率变化敏感,作业时不能忽略波浪频率的影响。Based on Sesam software,the motion characteristics of a twin-ship ultra-large offshore platform dismantling system under wind,wave and current load are studied in the present work.The differences of the motion characteristics between the dismantling system of twin-ship and the dismantling ship before coupling under wind and wave loads are analyzed emphatically,and the short-term forecast of the six-degree-of-freedom motion of the dismantling system of twin-ship is given.First,based on the frequency domain analysis of HydroD module,the six-degree-of-freedom response amplitudes of the twin-ship dismantling system and the dismantling ship under wave loads in different directions and frequencies are obtained;on this basis,the calculation results in the above frequency domain are introduced into Sima module for time-domain analysis,and the motion characteristics of the twin-ship dismantling system and the dismantling ship under wind and wave loads are obtained.The numerical simulation results show that the motion amplitude of the twin-ship dismantling system under wave load is less than the dismantling ship;the sway,roll and yaw motion amplitudes of the twin-ship dismantling system under wind,wave and current load are much smaller than the dismantling ship;the surge,heave and pitch motion amplitudes of the twin-ship dismantling system are also reduced to varying degrees;the heave,pitch and yaw motion amplitudes of the twin-ship dismantling system vary greatly with wave frequency.The influence of wave frequency should not be neglected during operation.

关 键 词：海洋平台拆解 双船耦合 风浪流载荷 运动特性 数值模拟 

分 类 号：U672.8[交通运输工程—船舶及航道工程]