不同圆弧半径直立堤胸墙波浪力的试验与分析

Test and analysis of wave load on different crest walls of vertical breakwater

为比较直立堤胸墙圆弧半径对其所受波浪力的影响,设计半径分别为45、67、98 cm共3种弧形胸墙以及直立式胸墙进行相关物理模型试验。通过将胸墙迎浪面不同测点波浪压力进行积分获得波浪总力,讨论相对波高、相对波长和圆弧半径对胸墙波浪力的影响。研究结果表明,胸墙波浪力随着相对波高的增大而增大,随着相对波长的增大呈现先增大-后减小-再增大的变化趋势。相同波浪要素条件下,弧形胸墙波浪力较直立式大;在3种弧形胸墙中,波浪力随圆弧半径的增大而减小,半径为45 cm的弧形墙受力最大。

To compare the effects of the arc radius of different vertical breakwater crest walls on its wave load,we carry out the physical model experiment about the three arc crest walls with the arc radius of 45 cm,67 cm and 98 cm respectively and the vertical crest wall,and obtain wave loads from the integral of the wave pressures on different measure locations of crest walls. Then,we analyze the relationship between the wave load and the relative wave height,relative wave length and the arc radius. The research results show that the wave loads increase with the increase of the relative wave height and they present the variation trend of firstly increase-then decrease-finally increase with the increase of the relative wave length. For the same wave conditions,the wave loads on the arc crest walls are bigger than those on the vertical crest wall. Among the three arc crest walls,the wave loads decrease with the increase of the arc radius and the maximum occurs on the arc crest wall with the arc radius of 45 cm.