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Roughness factor for multi-layer armour as overtopping estimator
Franco, L.; Pepi, Y.; de Finis, S.; Iorio, V.; Bellotti, G.; Cecioni, C. (2020). Roughness factor for multi-layer armour as overtopping estimator. Coastal Engineering Proceedings 36: 25. https://dx.doi.org/10.9753/icce.v36v.structures.25
In: Coastal Engineering Proceedings. American Society of Civil Engineers (ASCE): New York. ISSN 2156-1028, meer
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Documenttype: Samenvatting
Trefwoord
    Marien/Kust
Auteurs  Top 
  • Franco, L.
  • Pepi, Y., meer
  • de Finis, S.
  • Iorio, V.
  • Bellotti, G.
  • Cecioni, C.
Abstract
    Nowadays one of the most challenging problem for engineers is to adapt existing coastal structures to climate changes. Wave overtopping is highly sensitive to the increasing extreme water depths due to higher storm surges coupled with sea level rise. One way to face these problems for rubble mound breakwaters is to add one or more layers to the existing armour. Prediction of wave overtopping of coastal structures is presently obtained from empirical formulae in EurOtop (2018). For the case of overtopping over multi-layer armour, no validated method exists, so prediction must be based upon assumptions and judgement, with related uncertainties. This study is focused on the effects of different types of armour, the number of layer and other structural characteristics on the roughness factor f. The main effects of porosity and roughness will be investigated. This paper analyzes the results of several new physical model tests of different rubble mound breakwaters reproduced at the new medium scale random wave flume of the Department of Engineering of Roma Tre University.
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