海上移动基地浮体间连接器动力特性研究  

Study on dynamic characteristics of connectors in mobile offshore base

作　　者：郑荣坤 黄小平[1] 祁恩荣[2] 稽春燕 ZHENG Rong-kun;HUANG Xiao-ping;QI En-rong;JI Chun-yan(Collaborative Innovation Center for Advanced Ship and Deep Sea Exploration,Shanghai Jiao Tong University,Shanghai 200240,China;China Ship Scientific Research Center,Wuxi 214082,China;Institute of Ocean Engineering,Jiangsu University of Science and Technology,Zhenjiang 200135,China)

机构地区：[1]上海交通大学海洋工程国家重点实验室,上海200240 [2]中国船舶科学研究中心,江苏无锡214082 [3]江苏科技大学船舶与海洋工程学院,江苏镇江200135

出　　处：《船舶力学》2020年第9期1175-1186,共12页Journal of Ship Mechanics

基　　金：国家重点基础研究发展计划(973计划)项目(2013CB036105)。

摘　　要：本文通过基于三维势流理论的Sesam软件求解五模块MOB的水动力系数和波浪载荷,建立了引入连接器作用力的多浮体运动方程,求解得到连接器动力特性以及浮体的运动响应。同时计算并分析了60组不同连接器刚度下的连接器载荷和运动响应短期预报结果,确定了合理的连接器刚度方案;进而分析了连接器的横向布置位置、模块的间距对连接器载荷和浮体运动的影响;最后探讨了影响连接器纵向载荷的重要因素。计算结果表明,合理的连接器横向布置位置为±45 m,模块间距取20 m或25 m时较为合理,相对艏摇和浪向角是影响连接器纵向载荷最重要的因素。文中的结论可为连接器初步设计提供参考。The software Sesam which is based on the three-dimensional potential wave theory is applied to calculate the hydrodynamic coefficients and wave loads of 5-module MOB.The motion equation of the floating multi-body system into which connector forces are introduced is established and solved to obtain the connector dynamic characteristics and hydrodynamic response of floating body.Firstly,the short term predictions of connector forces and motion responses are calculated in consideration of 60 connector stiffness cases and then the rational connector stiffness option is determined.After that,the impacts of connector transverse positions and the spaces between adjacent modules on the module motions and connector forces are analyzed.Finally,the key factors that have impact on the connector longitudinal force are discussed.The result shows that the optimal connector transverse position is±45 meters,the optimal space between adjacent modules is 20 or 25 meters and the relative yawing motion and wave angles have a great impact on the connector longitudinal force.The result can provide reference for the preliminary design of connectors.

关 键 词：连接器 纵向载荷 动力响应 横向布置位置 模块间距 

分 类 号：TV131.2[水利工程—水力学及河流动力学]