斜向波浪作用下直立式防波堤前沿波浪特性试验研究  

Experimental study on front wave characteristics of vertical breakwater under oblique wave action

作　　者：杨博 潘军宁[1] 沈雨生[1] YANG Bo;PAN Junning;SHEN Yusheng(Key Laboratory of Sediment Engineering and Transportation Industry,Nanjing Institute of Hydraulic Sciences,Nanjing 210029,China)

机构地区：[1]南京水利科学研究院,港口航道泥沙工程交通行业重点实验室,江苏南京210029

出　　处：《水运工程》2023年第12期1-7,共7页Port & Waterway Engineering

摘　　要：在波浪与结构物相互作用过程中,若入射波波向与结构物小于某个角度时,会产生沿着建筑物传播的Stem波。它的波能在传播过程中迅速集中,对堤结构的稳定性以及港内波浪条件产生重要的影响。通过三维波浪物理模型试验,对比分析了规则波和不规则波下Stem波的波高分布随波浪入射角的变化规律以及不同结构形式防波堤前Stem波的波高分布。研究结果表明:规则波和不规则波作用下直立堤前Stem波波高垂直于堤轴线方向均呈部分驻波的分布形式,规则波作用下直立堤前Stem波波高垂直于堤轴线方向的变化幅度明显大于不规则波。对于不开孔直立堤,相同入射波浪周期下,波陡较大时Stem波比波高较小;而在不同波浪周期下,波浪入射角较小时,波陡对Stem波比波高影响不大;在波浪入射角度较大时,波陡较大则Stem波比波高较小。波浪入射角和直立堤开孔与否对直立堤前Stem波比波高的影响较大,且规律明显。In the process of wave-structure interaction,if the incident wave direction and the structure are less than a certain angle,Stem waves propagating along the building will be generated.Its wave energy is rapidly concentrated during propagation,which has an important impact on the stability of the dike structure and the wave conditions in the harbor.In this paper,the variation law of Stem wave height distribution with wave incident angle under regular wave and irregular wave and the wave height distribution of Stem wave in front of different structural breakwaters are compared and analyzed through three-dimensional wave physical model experiments.The results show that the Stem wave height perpendicular to the axis of the vertical embankment is partial standing wave distribution under the action of regular wave and irregular wave,but the amplitude of the change of the Stem wave height perpendicular to the axis of the breakwater under the action of regular wave is significantly greater than that under the action of irregular wave.For non-perforated vertical embankments,under the same incident wave period,when the wave steepness is large,the comparative height of Stem wave is small.In the case of the different incident wave period,when the wave incidence angle is small for a non-perforated vertical embankment,the wave steepness has little effect on the comparative height of Stem wave.In the case of larger incident angles,when the wave steepness is large,the comparative height of Stem wave is small.The impact of wave incidence angle and whether the vertical embankment is perforated or not on the comparative height of the Stem wave in front of the vertical embankment is significant,and the law is obvious.

关 键 词：斜向浪 直立堤 Stem波 入射波浪 结构形式 

分 类 号：U656.22[交通运输工程—港口、海岸及近海工程]