基于浮体系泊耦合模型的半潜驳运动响应研究  

Research on motion response of semi-submersible barge using the model for mooring floating structures

作　　者：徐嘉栋 陶金 刘梅梅[2] 于立伟 于通顺[1] XU Jia-dong;TAO Jin;LIU Mei-mei;YU Li-wei;YU Tong-shun(College of Engineering, Ocean University of China, Qingdao 266100, China;CCCC Fourth Harbor Engineering Institute Co. Ltd., Guangzhou 510230, China)

机构地区：[1]中国海洋大学工程学院,青岛266100 [2]中交四航工程研究院有限公司,广州510230

出　　处：《水道港口》2022年第2期158-165,共8页Journal of Waterway and Harbor

基　　金：国家自然科学基金项目(52088102);广州市珠江科技新星专项资助(201806010162,201906010023)。

摘　　要：建立浮体-系泊耦合弱非线性时域数值模型,对半潜驳在规则波、不规则波作用及下潜时六自由度运动及系缆锚链力进行了时域数值模拟,利用快速傅里叶变换得到半潜驳垂荡、横摇、纵摇三个自由度的运动响应及锚链力频谱曲线,结果对比分析了波高、波浪周期、浪向角、船舶吃水对半潜驳运动响应及其上系缆锚链力的影响,当波高增加时,运动响应幅值增加,锚链力随之以非线性关系增加;短波浪周期会致使半潜驳横摇、纵摇运动幅值有所增加,而中长周期波浪下垂荡运动和锚链力幅值显著高于短周期波浪,因此中长周期波浪下半潜驳施工危险性高;浪向角和船舶吃水对运动响应和锚链力的影响较为复杂,需要进一步研究。A weakly nonlinear numerical model for floating structure-mooring coupling was developed in this paper.Using the numerical model,the 6DOF motion of semi-submersible barge and the mooring forces were calculated when semi-submersible barge encountered regular wave or irregular wave during the submersion process.Then,the spectrums of motion responses and mooring forces were obtained by using the Fast Fourier Transformation.From the results,it was found that motion responses and mooring forces can be influenced by wave height,wave period,wave angle and draught.The mooring forces increased with the increase of wave height in a non-linear relationship.The amplitudes of pitch and roll motion were slightly larger in waves with smaller period,while the amplitudes of heave motion and mooring forces were significantly larger in waves with medium and long periods.Therefore,it was much dangerous for the operation in waves with medium and long periods.The influences of wave angle and draught of boats on motion response and mooring forces are quite complicated.

关 键 词：半潜驳 运动响应 浮体系泊耦合模型 系泊系统 下潜过程 

分 类 号：U674[交通运输工程—船舶及航道工程] TV92[交通运输工程—船舶与海洋工程]