斜向波浪对斜坡堤胸墙作用力的试验研究

摘要

斜坡堤胸墙的稳定性主要受到波浪作用的影响,而且实际工程中斜坡堤多受斜向波浪作用.通过斜向与正向不规则波对斜坡堤胸墙作用的物理模型试验研究,分析斜坡堤单个胸墙所受的斜向波浪总力的折减系数随水位和波浪入射角度的变化规律,并与斜向波浪对单元直立堤的作用情况进行对比.结果表明:斜坡堤单个胸墙所受的斜向波浪总力的折减系数总体上随着水位的降低而变小,随着波浪入射角度的减小而变小;斜向波浪总浮托力的折减系数一般小于总水平力的折减系数;在不同水位和波浪入射角下,斜坡堤单个胸墙所受的斜向波浪总力的折减系数与单元直立堤有一定差别.%The stability of the rubble-mound breakwater crown wall mostly depends on wave loads, and in the seas the breakwater is mostly under the oblique wave action.In this paper, we analyze the effect of the water level and incident wave direction on the reduction factor of the total oblique wave force of one rubble-mound breakwater crown wall, and compare with the vertical breakwater according to the oblique and direct irregular wave model test.The results show that the reduction factor of the total oblique wave force of one rubble-mound breakwater crown wall decreases with the water level or the incident wave direction decreasing.In most cases, the reduction factor of the total uplift oblique wave force is smaller than the horizontal one.The difference between the reduction factors of the total oblique wave force of the rubble-mound breakwater crown wall and the vertical breakwater varies with different water levels or incident wave directions.