礁坪上单桩在孤立波作用下的受力状况研究  

Study on the stress condition of a monopile mounted on reef flat under solitary wave action

作　　者：丁广佳[1,2,4] 吕迎雪 黄明汉[1,2,4] 肖理 房克照[1,2,3] DING Guang-jia;LU Ying-xue;HUANG Ming-han;XIAO Li;FANG Ke-zhao(Tianjin Port Engineering Institute Co.,Ltd.of CCCC First Harbor Engineering Company Ltd.,Tianjin 300222,China;Key Laboratory of Coastal Engineering Hydrodynamics,CCCC,Tianjin 300222,China;Dalian University of Technology,The State Key Laboratory of Coastal and Offshore Engineering,DUT-UWA Joint Research Centre for Ocean Engineering,Dalian,Liaoning 116024,China;CCCC First Harbor Engineering Co.,Ltd.,Tianjin 300461,China)

机构地区：[1]中交天津港湾工程研究院有限公司,天津300222 [2]中交集团海岸工程水动力重点实验室,天津300222 [3]大连理工大学海岸和近海工程国家重点实验室,DUT-UWA海洋工程联合研究中心,辽宁大连116024 [4]中交第一航务工程局有限公司,天津300461

出　　处：《中国港湾建设》2024年第10期6-14,共9页China Harbour Engineering

基　　金：中交集团科技研发项目(2022-ZJKJ-PTJS02)。

摘　　要：文中介绍了孤立波冲击礁坪上单桩的三维水槽试验和OpenFOAM数值模拟研究。礁体模型坡度为1∶4,直径0.15 m的单桩布置在礁坪上。试验以水深的30%作为入射孤立波的波高,对沿程波面、特定位置处流速以及单桩上波浪冲击荷载进行了采集。选用realizable k-ε湍流模型进行RANS数值模拟,并与物理试验数据进行验证分析。基于试验数据和RANS模拟结果,研究了岛礁地形上孤立波传播的水动力特性及其对礁坪上单桩的作用力,并探讨了不同坡度和入射波高下孤立波对单桩作用力的影响。研究成果对于桩基础选址和防护有一定工程指导意义。The 3D wave flume experiments and OpenFOAM numerical simulation study of a monopile mounted on reef flat impacted by solitary wave were presented in this paper.The reef model has a 1:4 slope and the monopile with a diameter of 0.15 m is mounted on the reef flat.In the experiments,the incident solitary wave height is determined to be 30%of the water depth.The surface elevation along the fringing reef,velocity at a particular place and the wave impact load on the monopile are recorded.The RANS numerical simulation is carried out by using the realizable k-ε turbulence model,and it was verified with physical experimental data.Based on the experimental data and RANS simulation results,the hydrodynamic characteristics of solitary wave propagation on the reef flat and the solitary wave impacts on the monopile mounted on reef flat are studied,and the influence of the solitary wave impact on the monopile under various slopes and incident wave heights is discussed.The research results have certain engineering guidance significance for the site selection and protection of pile foundations.

关 键 词：孤立波 岛礁 单桩 OPENFOAM 压力 

分 类 号：U656.113[交通运输工程—港口、海岸及近海工程]