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Forces on a vertical wall on a dike crest due to overtopping flow Chen, X.; Hofland, B.; Altomare, C.; Suzuki, T.; Uijttewaal, W. (2015). Forces on a vertical wall on a dike crest due to overtopping flow. Coast. Eng. 95: 94-104. https://dx.doi.org/10.1016/j.coastaleng.2014.10.002 In: Coastal Engineering: An International Journal for Coastal, Harbour and Offshore Engineers. Elsevier: Amsterdam; Lausanne; New York; Oxford; Shannon; Tokyo. ISSN 0378-3839; e-ISSN 1872-7379, meer

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Beschikbaar in	Auteurs
VLIZ: Non-open access 274894 [ aanvragen ] Waterbouwkundig Laboratorium: Non-open access 266325 [ aanvragen ]

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Trefwoorden

Impact loads Overtopping Marien/Kust

Author keywords

Broken wave; Wide crest dike; Vertical wall

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Auteurs		Top
Chen, X. Hofland, B. Altomare, C., meer	Suzuki, T., meer Uijttewaal, W.

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Abstract

Wave overtopping a sea dike may pose a threat to people and property. However, knowledge of the overtopping features, in particular overtopping flow loads, are not well understood. The aim of this study was to understand the overtopping process on a dike crest and to develop an empirical formula for the resulting overtopping flow impact loads on a wall as a function of the property of the incoming waves and dike geometry characteristics. In this paper, we propose a new descriptor (the overtopping momentum flux) in order to predict the impact loads. To validate the proposed empirical function, a series of physical scale model tests was conducted. In these experiments, we measured the overtopping flow loads on a vertical wall at different locations on a dike, which were induced by broken waves. A correction coefficient for the wall effect on the initial flow depth, and an empirical initial flow depth coefficient for a broken wave were determined. These empirical coefficients allowed for an interpretation of the overtopping process of a broken wave from dike toe up to the front of the wall on the dike.

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