涵洞式直立堤透浪特性研究

Wave transmission coefficients of vertical breakwater with culverts

分析总结国内外透空式防波堤的研究成果基础上,讨论了涵洞式直立堤透浪系数的影响因素。通过不规则波作用下涵洞式直立堤断面波浪模型试验,分析了相对堤身入水深度(t/d)、相对防波堤宽度(B/L s)、相对水深(d/H s)、波陡(Hs/L s)、相对胸墙高度(Δ/H s)对透浪系数的影响。通过与Wiegel公式的对比找出误差原因,并针对相对堤身入水深度(t/d)、相对防波堤宽度(B/L s)、波陡(Hs/L s)这3个要素在Wiegel公式的基础上拟合新的透浪系数公式,并将拟合公式计算的透浪系数与试验值进行比较验证。研究成果对涵洞式直立堤的理论研究和工程设计具有较高的参考价值。

Researches, both at home and abroad, on permeable breakwaters are summarized and influential factors of the permeating wave coefficient are discussed. The model of irregular waves through the vertical breakwater with culverts is simplified, and a physical model experiment is carried out to study how the relative water entry depth（t/d）, the relative width of the breakwater（B/Ls）, the relative water depth（d/Hs）, the wave steepness（Hs/Ls）, the relative height of the breast wall（A/Hs） influence the wave transmission coefficients .The error causes are found by contrasting with Wiegel formula , based on which, a new fitting formula of the wave transmission coefficients are proposed according to the relative water entry depth（t/d）, the relative width of the breakwater（B/Ls）, the wave steepness（Hs/Ls）, and its calculation results were compared with experimental records. The research results may serve as reference for the research and design of vertical breakwaters with culverts.