Stepped revetments limit wave overtopping effectively. Small-scale studies provided insights in the design of crest-levels and step geometries of these structures. The validation of these insights at large scale, along with the analysis of individual overtopping volumes, is required to formulate design recommendations. This paper investigates wave overtopping rates and individual overtopping volumes at stepped revetments by means of full-scale flume experiments. Two cross-sections, each with a slope of 1:3, were studied with uniform step heights of 0.17 m and 0.50 m. The revetments reduced wave overtopping rates in comparison to smooth dikes, resulting in influence factors for roughness (γ_f) between 0.43 and 0.73. An empirical formula for γ_f is proposed with which the wave overtopping rate at stepped revetments can be estimated. Previous small-scale studies underestimate γ_f of this study by 2–31 $\text{\%}$. Individual overtopping volumes were described by a Weibull distribution, revealing a higher median shape factor (b=1.63) for stepped revetments compared to breakwaters, smooth dikes or vertical walls.

阶梯式护岸有效地限制了波浪的超车。小型研究为这些结构的波峰级设计和台阶几何提供了见识。需要大规模验证这些见解，并分析各个超支量，才能提出设计建议。本文通过全尺寸水槽实验研究了台阶护岸上的波浪超顶率和单个超顶量。研究了两个横截面，每个横截面的坡度为1：3，且均一的台阶高度分别为0.17 m和0.50 m。降低越浪率相比的护岸平滑堤坝，导致影响因素粗糙度（γ _˚F 0.43和0.73之间）。经验式为γ _˚F提出了一种可以估计阶梯护岸处的波超顶速率的方法。以前的小规模研究低估γ _˚F由2-31本研究$\text{％}$。单个的覆盖量通过威布尔分布来描述，与防波堤，光滑的堤防或垂直墙相比，台阶式护岸的中值形状因子（b = 1.63）更高。