防淤积型透空式防波堤水动力特性分析  

Analysis of the hydrodynamic characteristics of an antideposition permeable breakwater

作　　者：于通顺[1] 唐俊辉 孟晓宇 YU Tongshun;TANG Junhui;MENG Xiaoyu(College of Engineering,Ocean University of China,Qingdao 266000,China;Northeast Electric Power Design Institute Co.,Ltd.of China Power Engineering Consulting Group,Changchun 130021,China)

机构地区：[1]中国海洋大学工程学院,山东青岛266000 [2]中国电力工程顾问集团东北电力设计院有限公司,吉林长春130021

出　　处：《哈尔滨工程大学学报》2023年第8期1295-1303,共9页Journal of Harbin Engineering University

基　　金：国家自然科学基金项目(51739010).

摘　　要：为探究新型防淤积型透空式防波堤的水动力性能,本文基于标准的k-ε紊流模型构建了规则波与透空式防波堤相互作用的数值模型,开展了物理模型试验。本文利用数值模拟方法探究了规则波作用下透空式防波堤的消波性能、荷载特征等水动力特性。研究发现:挡板入水深度增大50%,透射系数减小9%~28%;入水深度增大100%,透射系数减小42%~58%。防淤积型透空式防波堤可通过调节上拦沙板的下落高度保证潮位变化过程中的挡浪效果。上拦沙板的无量纲水平波浪力和上托力随波陡的增大而减小,在大波作用下,上拦沙板整体处于挡浪板后时其承受的水平波浪力更大。防淤积型透空式防波堤的特殊结构及其良好的消波效果,决定了其有成为理想的海岸防护结构的巨大潜力。A numerical model of the interaction between regular waves and permeable breakwaters was constructed on the basis of the standard k-εturbulence model to explore the hydrodynamic performance of a new antideposition permeable breakwater.Physical model tests were conducted to verify the accuracy of the numerical model.Numerical simulation was used to explore the hydrodynamic characteristics,such as wave dissipation performance and load characteristics,of the permeable breakwater under regular waves.When the water entry depth of the baffle increased by 50%,the transmission coefficient decreased by 9%~28%.When the water entry depth increased by 100%,the transmission coefficient decreased by 42%~58%.The antideposition permeable breakwater can ensure the wave-blocking effect during the change in tidal levels by adjusting the drop height of the upper sand-board for sediment trapping.The dimensionless horizontal wave force and uplift force of the upper sand baffle,which decreased with the increase in wave steepness,can ensure the wave-blocking effect during the change in tidal levels by adjusting the drop height of the upper board for sediment trapping.Under the action of large waves,the upper sand-blocking plate bore a great horizontal wave load when it was entirely behind the wave baffle.The special structure of antideposition permeable breakwater and its good wave dissipation effect determine its great potential to become an ideal coastal protection structure.

关 键 词：透空式防波堤 规则波 数值模拟 消波性能 透射系数 荷载特征 波浪力 

分 类 号：P751[交通运输工程—港口、海岸及近海工程]