新型桩基透空式防波堤透射系数分部计算与数值分析  

Sectional calculation and numerical analysis on transmission coefficient of a new type pile-supported permeable breakwater

作　　者：吴丹 潘新颖[1,2] 王振鲁 费华平[1] WU Dan;PAN Xinying;WANG Zhenlu;FEI Huaping(College of Engineering,Ocean University of China,Qingdao 266100,China;Shandong Provincial Key Laboratory of Ocean Engineering,Qingdao 266100,China)

机构地区：[1]中国海洋大学工程学院,山东青岛266100 [2]山东省海洋工程重点实验室,山东青岛266100

出　　处：《水运工程》2023年第11期23-29,共7页Port & Waterway Engineering

基　　金：国家重点研发计划项目(2021YFB2601100)。

摘　　要：针对新型桩基透空式防波堤提出一种防波堤波浪透射系数的分部解析计算方法,对波浪透射系数进行分部表示,包括挡浪墙和开孔板、水平平台、桩基3部分,将其透射系数相乘作为整体结构的透射系数。同时,利用FLOW-3D软件进行数值模拟,与分部解析计算结果进行比较,两者具有较好的一致性。此外,利用所提出的计算方法拓展研究了单层板开孔率、水平平台长度2种结构参数对防波堤透射系数的影响,结果表明,该防波堤结构随着水平平台的加长,其波浪透射系数明显减小;当单层板的开孔率ε大于20%时,其对波浪透射系数的影响不再明显。In this study,the transmission coefficient of a new type of pile-supported permeable breakwater is analyzed by a sectional method.The transmission coefficient of the whole breakwater can be expressed by multiplying the calculation results of the following three parts,including the upper retaining wall and the porous plates,the horizontal platform,and the piles.At the same time,this study establishes the wave numerical flume using the FLOW-3D software.The analytical results are compared with the numerical results,which have good agreement.In addition,this paper also carries out the expand analysis of the influence of the porosity and the length of the horizontal platform on the transmission coefficient by using the proposed calculation method.The results show that the transmission coefficient is apparently influenced by the increasing length of the horizontal platform,and the effect of porosityεchanges not obviously whenε>20%.

关 键 词：透空式防波堤 透射系数 分部计算方法 FLOW-3D 

分 类 号：U656[交通运输工程—港口、海岸及近海工程]