允许越浪斜坡式防波堤顶高程优化研究  

Optimization of crest elevation of sloping breakwater allowing wave overtopping

作　　者：张雄辉 杜冰茹 付涛 李珊珊 ZHANG Xionghui;DU Bingru;FU Tao;LI Shanshan(Guangzhou Salvage Bureau of the Ministry of Transport,Guangzhou 510610,China)

机构地区：[1]交通运输部广州打捞局,广东广州510610

出　　处：《水运工程》2024年第9期61-67,共7页Port & Waterway Engineering

摘　　要：基于南海应急抢险打捞保障基地工程对允许越浪斜坡式防波堤顶高程进行优化,在保证不恶化港内泊稳条件、码头结构和防波堤结构安全的前提下,最大限度降低堤顶高程以达到降低工程投资的目的。通过波浪断面物理模型试验模拟堤后次生波并与波浪数学模型推算的绕射波进行叠加,计算不同堤顶高程对应码头结构所受的波浪力,并通过有限元软件分析码头结构的安全性,同时通过波浪断面物理模型试验验证防波堤结构的稳定性。结果表明:对于码头和防波堤采用分离式布置的工程,防波堤防护要求可适当降低。堤顶高程按设计高水位+2 a一遇H13%基本不越浪控制,防波堤和码头结构安全可靠。Based on the South China Sea emergency salvage and support base project,we optimize the crest elevation of the sloping breakwater allowing wave overtopping to minimize investment while upholding the stability of harbor mooring conditions,wharf structure,and structural safety of breakwater.By conducting wave section physical model tests,we simulate secondary waves behind the breakwater and overlaid with diffracted waves calculated by mathematical models.Then we calculate wave forces on wharf structure for varying crest elevations,carry out the structural safety analysis of wharf by finite element software,and verify the stability of the breakwater structur by wave section physical model tests.The results indicate that for projects with separate dock and breakwater layouts,breakwater protection requirements can be suitably reduced.Ensuring the crest elevation does not exceed the design high water level+H 13% of once every two years effectively maintains the safety and reliability of breakwater and wharf structures.

关 键 词：断面物理模型 次生波 堤顶高程 允许越浪 

分 类 号：U656.21[交通运输工程—港口、海岸及近海工程]