组合式抛石防波堤港外波高分布试验研究  

Experimental study on wave height distribution outside harbor for composite rubble mound breakwaters

作　　者：陈汨梨 严士常[1,2] 杨越 张海明[1,2] 陶爱峰 潘志刚[3] CHEN Mi-li;YAN Shi-chang;YANG Yue;ZHANG Hai-ming;TAO Ai-feng;PAN Zhi-gang(College of Harbour,Coastal and Offshore Engineering,Hohai University,Nanjing,Jiangsu 210024,China;Key Laboratory of Ministry of Education for Coastal Disaster and Protection,Hohai University,Nanjing,Jiangsu 210024,China;China Harbour West Africa Regional Company,Abidjan 06BP6687,Cote d'Ivoire)

机构地区：[1]河海大学港口海岸与近海工程学院,江苏南京210024 [2]河海大学海岸灾害及防护教育部重点实验室,江苏南京210024 [3]中国港湾西部非洲区域公司,科特迪瓦阿比让06BP6687

出　　处：《中国港湾建设》2022年第1期45-47,共3页China Harbour Engineering

摘　　要：通过多向不规则波条件下,组合式抛石防波堤的物理模型试验,收集港外区域P1~P5测点波高,研究波浪与抛石防波堤相互作用下港外波高空间分布及变化规律。研究发现:当波浪正向作用于主防波堤时,主堤前方P2和P3成为最危险位置,由于入射波与反射波叠加位置会随波周期和水深变化而不同,使得最大波高出现位置不同。当波浪斜向作用于主防波堤圆形堤头时,波浪基本无反射,且因绕射作用而耗散波浪能量,口门位置P4和P5波高变化幅度最小且相对稳定。当波浪作用于两道防波堤的交汇处时,由于波浪发生反射、折射、透射、破碎等复杂变形作用下而耗散能量,两道防波堤交汇处P1波高变化幅度较小。在相同有效波高H_(m0)=3.03 m条件下,无论水深h=17.1 m或14.8 m,随着波周期T_(P)的增大,港外危险区域会逐渐远离主防波堤。Through the physical model experiment of the composite rubble mound breakwater,the wave heights of P1~P5 measuring points outside harbor have been obtained under the action of multi-directional irregular waves.The spatial distribution and change rule of wave heights outside harbor under the interactions between waves and rubble mound breakwaters were studied.It is found that when the wave direction is perpendicular to the main breakwater,the P2 and P3 in front of the main breakwater become the most dangerous position.Due to the superposition positions of incident waves and reflected waves vary with wave periods and water depths,the positions of the maximum wave height will be different.When waves obliquely act on the round head of the main breakwater,the waves basically have no reflection,and the wave energy is dissipated due to the diffraction action.The P4 and P5 positions at harbor entrance have the smallest variation range of wave heights,which is relatively stable.When waves act on the junction of two breakwaters,the change range of wave height of P1 is small due to the complex wave deformations such as reflection,refraction,transmission and breakage,which can dissipate the energy.Under the same effective wave height H_(m0)=3.03 m,whether there is water depth h=17.1 m or h=14.8 m,the risk areas outside harbor will change from the main breakwater to a further distance with the increase of wave period T_(P).

关 键 词：多向不规则波 港池试验 港外区域 波高分布 抛石防波堤 

分 类 号：U612.23[交通运输工程—船舶及航道工程]