摘要
为降低船行波对内河生态航道护岸的影响,提出一种兼顾消减波浪和连通水体的孔洞型消波结构,并通过波浪水槽物理模型试验研究了其消波特性,分析了孔洞、波高和水位对波浪透射、反射、波浪力的影响规律。结果表明:波浪与孔洞型消波结构相互作用,表现出显著的波浪透射、反射和孔洞造成的流体紊动现象,极大改变了波浪传播特征;透射波浪的波高在消波结构附近相对较大,距离消波结构较远时波高显著减小并趋于稳定;波浪透射系数随孔径减小和波高增大而逐渐减小;波浪反射系数随孔径减小基本不变,随波高增大而逐渐增大;透射和反射系数随水位的变化关系与水位孔洞的相对位置及透波程度相关;随着波高增大,波压力和波吸力呈先快速增大后基本不变的趋势;随着孔径增大,波压力逐渐减小,而波吸力相近,且开孔率对波压力降幅的影响较波吸力更大。
One type of hole-type wave dissipation structure,capable of reducing wave impact while maintaining water flow connections,is proposed in this study to reduce the impact of ship wave on the revetments of inland water ecological channels.The wave dissipation behavior of this type of breakwater is investigated through physical model tests in wave flumes.Also,the effects of holes,wave height and water depth on the wave transmission,reflection,and wave forces are analyzed.The experimental results indicated that the interaction between waves and the hole-type wave dissipation structures results in significant wave transmission,reflection,and turbulence induced by the holes,leading to substantial alterations in the characteristics of wave propagation.The wave height of transmissive waves is large in the vicinity of the dissipation structures and decreases apparently and stabilizes when away from the structures.The wave transmission coefficient gradually decreases with a reduction in hole diameter and an increase in wave height.The wave reflection coefficient remains almost unchanged with a decrease in hole diameter and increases gradually with an increase in wave height.Transmission/reflection coefficients as a function of water depth are in relation to water level-relative position of the holes and degree of wave transmission.Both wave pressure and suction increase rapidly with an increase in wave height and then remain stable.As the hole diameter increases,the wave pressure gradually decreases,while the wave suction remains similar.And the porosity has a greater effect on the reduction in wave pressure than in wave suction.
作者
侯利军
蔡塬达
王辉
石泓逸
宋少红
陈达
HOU Lijun;CAI Yuanda;WANG Hui;SHI Hongyi;SONG Shaohong;CHEN Da(Key Laboratory of Coastal Disaster and Defence of Ministry of Education,Hohai University,Nanjing 210098,China;Changjiang Institute for Conservation and Development,Hohai University,Nanjing 210098,China;Shanghai Chengtou Channel Construction Co.,Ltd.,Shanghai 201913,China)
出处
《河海大学学报(自然科学版)》
北大核心
2025年第2期54-62,共9页
Journal of Hohai University(Natural Sciences)
基金
江苏省交通运输科技项目(2024Y09)
上海市科技计划项目(21DZ1202700)
中国长江三峡集团有限公司科研项目(202103320)。
关键词
生态航道
船行波
孔洞型消波结构
波浪透射
波浪力
ecological channels
ship wave
hole-type wave dissipation structure
wave transmission
wave forces
作者简介
侯利军(1981-),男,研究员,博士,主要从事港口与航道工程研究。E-mail:hlj2932@hhu.edu.cn;通信作者:陈达(1978-),男,教授,博士,主要从事港口与航道工程研究。E-mail:chenda@hhu.edu.cn。
