组合浮囊型浮式防波堤消浪特性的数值模拟研究  

Numerical simulation of the wave dissipation performance of a combined capsule type floating breakwater

作　　者：李娇娇[1] 冀坷帆 张金凤[2] 王玉红[1] 马瑞 LI Jiao-jiao;JI Ke-fan;ZHANG Jin-feng;WANG Yu-hong;MA Rui(CCCC First Harbor Consultants Co.,Ltd.,Tianjin 300222,China;State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University,Tianjin 300072,China)

机构地区：[1]中交第一航务工程勘察设计院有限公司,天津300222 [2]天津大学水利工程仿真与安全国家重点实验室,天津300072

出　　处：《中国港湾建设》2021年第7期6-10,共5页China Harbour Engineering

基　　金：天津市科技计划项目(17ZXFWGX00130)。

摘　　要：波浪-浮式防波堤相互作用的研究对于防波堤的性能优化起着重要的作用。文中提出了一种新型组合浮囊型浮式防波堤结构,并探究了该结构的消浪性能。通过Flow-3D软件进行数值计算,探讨了相对宽度及相对吃水对消浪性能的影响,分析了锚链系统的内力规律及结构整体的横荡、升沉与横摇运动规律。计算结果表明:当相对吃水D/d>0.5或相对宽度B/L>0.3时,浮囊型浮式防波堤的透射系数可以达到50%;增大相对宽度与相对吃水都可以提高防波堤的消浪性能;结构运动过程中浮囊之间的柔性连接力大于浮囊与地面间的锚链力;结构横荡、升沉与横摇的位移变化非常稳定,整体稳定性好。The study of the interaction between wave and floating breakwater plays an important role in the performance optimization of the breakwater.In this paper,a new combined capsule type floating breakwater was proposed,and the wave dissipation performance of this structure was explored.By numerical calculation using Flow-3D,the influence of relative width and relative draft on the wave dissipation performance was discussed.The internal forces of the mooring system and the sway,heave and roll motion responses of the whole structure were analyzed.Results show that when D/d>0.5 or B/L>0.3,the transmission coefficient of the combined capsule type floating breakwater can reach 50%.Increasing the relative width and the relative draft can both improve the wave dissipation performance of the breakwater.During the movement of the structure,the force of the flexible connection between floating capsules is greater than the mooring force between floating capsules and ground.The sway,heave and roll motion of the structure is very stable,which shows that the overall stability is good.

关 键 词：组合浮囊 浮式防波堤 数值模拟 透射系数 锚链力 

分 类 号：U656.24[交通运输工程—港口、海岸及近海工程]