Wave overtopping of stepped revetments

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Kerpen, N.B.; Schoonees, T.; Schlurmann, T.: Wave overtopping of stepped revetments. In: Water 11 (2019), Nr. 5, 1035. DOI: https://doi.org/10.3390/w11051035

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Sum total of downloads: 139

Wave overtopping - i.e., excess of water over the crest of a coastal protection infrastructure due to wave run-up - of a smooth slope can be reduced by introducing slope roughness. A stepped revetment ideally constitutes a slope with uniform roughness and can reduce overtopping volumes of breaking waves up to 60% compared to a smooth slope. The effectiveness of the overtopping reduction decreases with increasing Iribarren number. However, to date a unique approach applicable for a wide range of boundary conditions is still missing. The present paper: (i) critically reviews and analyzes previous findings; (ii) contributes new results from extensive model tests addressing present knowledge gaps; and (iii) proposes a novel empirical formulation for robust prediction of wave overtopping of stepped revetments for breaking and non-breaking waves. The developed approach contrasts a critical assessment based on parameter ranges disclosed beforehand between a smooth slope on the one hand and a plain vertical wall on the other. The derived roughness reduction coefficient is developed and adjusted for a direct incorporation into the present design guidelines. Underlying uncertainties due to scatter of the results are addressed and quantified. Scale effects are highlighted.
License of this version: CC BY 4.0 Unported
Document Type: Article
Publishing status: publishedVersion
Issue Date: 2019
Appears in Collections:Fakultät für Bauingenieurwesen und Geodäsie

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pos. country downloads
total perc.
1 image of flag of Germany Germany 83 59.71%
2 image of flag of United States United States 26 18.71%
3 image of flag of China China 7 5.04%
4 image of flag of Taiwan Taiwan 3 2.16%
5 image of flag of Kazakhstan Kazakhstan 3 2.16%
6 image of flag of France France 3 2.16%
7 image of flag of South Africa South Africa 2 1.44%
8 image of flag of Norway Norway 2 1.44%
9 image of flag of Iran, Islamic Republic of Iran, Islamic Republic of 2 1.44%
10 image of flag of United Kingdom United Kingdom 2 1.44%
    other countries 6 4.32%

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