波浪作用下鱼巢型护岸近侧水体动力响应研究  

Study on dynamic response of waters near fish-nest revetment under wave action

作　　者：应杭彤 蒋茗韬 张媛娇 林喜荣 陈艺 YING Hangtong;JIANG Mingtao;ZHANG Yuanjiao;LIN Xirong;CHEN Yi(School of Mechanics and Engineering Science,Shanghai University,Shanghai 200400,China;Marine Ecological Restoration and Smart Ocean Engineering Research Center of Hebei Province,Qinhuangdao 066000,China;Nanyang Environment and Water Research Institute,Nanyang Technological University,Singapore 639798;The Eighth Geological Brigade,Hebei Bureau of Geology and Mineral Resources Exploration,Qinhuangdao 066000,China;Wuzhou Waterway Maintenance Center of Guangxi Zhuang Autonomous Region,Wuzhou 543002,China)

机构地区：[1]上海大学力学与工程科学学院,上海200400 [2]河北省海洋岸线生态修复与智慧海洋监测工程研究中心,河北秦皇岛066000 [3]新加坡南洋理工大学南洋水环境与水资源研究所,新加坡639798 [4]河北省地质矿产勘查开发局第八地质大队,河北秦皇岛066000 [5]广西壮族自治区梧州航道养护中心,广西梧州543002

出　　处：《人民长江》2024年第10期225-231,共7页Yangtze River

基　　金：国家自然科学基金项目(42006143);河北省海洋岸线生态修复与智慧海洋监测工程研究中心开放基金项目“船形波作用下航道鱼巢型生态护坡抗冲刷性能研究”(2024KY1165)。

摘　　要：鱼巢型生态护岸可增加岸坡的稳定性、抗冲性,并营造良好的河流生态景观,是当下内河航道常用的护岸形式,而研究波浪作用下鱼巢型护岸近侧水体的动力响应,对护岸工程的设计优化具有重要意义。通过数值模拟与水槽试验相结合的方法,针对不同波况(波高、波角)下鱼巢型护岸所受波浪冲击的变化规律及其周边水体的动压及应力响应特征展开了研究。结果表明:波浪作用下,波高及波角的变化对护岸垂向动压分布形态影响较小;不同波浪入射条件下,护岸侧动压峰值均出现在略低于静水位处(Z=-0.05 m);当入射波高较大时(H=0.10 m),护岸侧的动压整体变大,空腔处对波能的吸收更为明显;入射波角的增大(β=45°)会引起波能分散,使坡面动压峰值减弱。研究成果可为鱼巢型护岸在内河航道防护中的应用提供理论参考。The fish-nest ecological revetment,a commonly used revetment form in the current inland waterway,can increase stability and anti-scourability of bank slopes and create well ecological landscape for rivers.So it is of great significance to study the dynamic response of waters near the fish-nest revetment under wave action for the design optimization of revetment engineering.Through the combination of numerical simulation and flume experiments,the variation law of wave impact on fish-nest revetment and the dynamic pressure and stress response characteristics of surrounding waters under different wave conditions(wave height and wave angle)were studied.The results showed that the change of wave height and wave angle has little effect on the vertical dynamic pressure distribution of revetment under wave action.Under different wave incidence conditions,the peak value of dynamic pressure on the revetment side appeared at areas slightly lower than the static water level(Z=-0.05 m);when the incident wave height was large(H=0.10 m),the dynamic pressure on the revetment side became larger as a whole,and absorption of wave energy by the cavity was more obvious.The increase of incident wave angle(β=45°)would cause wave energy dispersion and weaken the peak value of dynamic pressure on the slope.The research results can provide theoretical reference for the application of fish-nest revetment in inland waterway protections.

关 键 词：鱼巢型护岸 波浪作用 动力响应 水槽试验 数值模拟 内河航道 

分 类 号：TV861[水利工程—水利水电工程]