涌浪条件下斜坡式防波堤堤脚块石稳定性

海外港口工程大部分位于以涌浪为主的海域,防波堤在涌浪作用下的稳定性尚未得到全面认识。对于斜坡堤,除了护面对其稳定性至关重要外,堤脚对其稳定性也很重要。以某一具体港口防波堤工程为例,通过波浪断面和局部整体物理模型试验,对涌浪作用下斜坡堤堤脚块石的稳定性进行了研究。根据试验结果,对比正向和斜向波浪作用下斜坡堤堤脚块石的稳定性结果,重点分析了斜向波浪作用下斜坡堤堤头圆弧段堤脚块石发生破坏的原因及其随入射波浪周期和水位的变化关系,并对原方案堤脚进行了优化。

Stability of the toe rocks of the rubble-mound breakwater under swell action

The majority of the overseas port construction projects are located at areas with swell.The stability of the breakwaters under swell action is not fully known and researched.For the rubble-mound breakwater,the armour layer is very important,and also the toe of the rubble mound breakwater is important.Taking a breakwater project of a certain port as an example,the 2D and 3D physical model tests are performed to study the stability of the toe rocks of the rubble-mound breakwater under swell action.Based on the test results,the stability of the toe rocks of the rubble-mound breakwater under perpendicular and oblique wave action is compared.The damage of the toe rocks in the roundhead under oblique wave action is analyzed specially,and the damage level with the incident wave periods and water levels is also analyzed,thus the original plan of the toe rocks is optimized.