防波堤越浪次生波近滩面传播试验研究  

Experimental study on the propagation of secondary waves across breakwaters near the beach

作　　者：杨欣 刘鸣洋 高峰[2] 戈龙仔[2] 陈汉宝[2] YANG Xin;LIU Mingyang;GAO Feng;GE Longzai;CHEN Hanbao(CCCC Water Transport Planning and Design Institute Co.Ltd.,Beijing 100007,China;Tianjin Research Institute for Water Transport Engineering,National Engineering Research Center of Port Hydraulic Construction Technology,Key Laboratory of Engineering Sediment of the Ministry of Transport,Tianjin 300456,China)

机构地区：[1]中交水运规划设计院有限公司,北京100007 [2]交通运输部天津水运工程科学研究所港口水工建筑技术国家工程研究中心工程泥沙交通行业重点实验室,天津300456

出　　处：《水道港口》2023年第6期894-901,共8页Journal of Waterway and Harbor

基　　金：国家自然科学基金项目(52101316);天津市科技计划项目(21JCQNJC00480)。

摘　　要：为优化防波堤平面布置,减小波浪对堤后结构作用,以科伦坡港口城防波堤工程为例,通过几何比尺为1:38的断面物理模型试验,研究了防波堤及后方护岸越浪规律以及防波堤堤后次生波高沿程变化规律。研究结果表明,产生最大次生波高位置在防波堤后附近;越堤水体产生的次生波向后方护岸传播时,波高沿程最大衰减幅度可达62%;波浪传至近岸时发生浅水变形,波高有所增加,最大增幅为36%,明显小于衰减幅度;波浪发生破碎后其能量急剧衰减。为减小堤顶越浪造成的堤后次生波对后方防浪建筑物的危害,应合理设置防波堤和后方建筑物的距离,利用波浪破碎消减波能。In this paper,the cross-sectional physical model test with a geometric scale of 1:38 was carried out to study the wave overtopping behind the Colombo New City breakwater and revetment,as well as the secondary wave height behind the breakwater.It can be obtained that the largest secondary wave height appears near the back of the breakwater.When the secondary waves induced by the overtopping propagate to the shore,the wave height attenuates with the amplitude up to 62%.When the waves reach to the nearshore zone,the wave height increases again due to the shallow water deformation with the amplitude up to 36%,which is much smaller than the increasing amplitude.When the wave propagates further to the revetment,the wave height decreases rapidly due to the energy loss by wave breaking.In order to reduce the damage of the secondary waves to the wave-proof structures,the distance between the breakwater and the structures behind should be reasonably set to reduce the secondary wave energy as much as possible.

关 键 词：防波堤 堤顶越浪 堤后次生波 模型试验 

分 类 号：U65[交通运输工程—港口、海岸及近海工程] TV143[交通运输工程—船舶与海洋工程]