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Foreshore evolution and hydraulic performance of a beach protected by a nearly vertical seawall
Briganti, R.; Musumeci, R.E.; van der Meer, J.; Romano, A.; Stancanelli, L.M.; Kudella, M.; Akbar, R.; Mukhdiar, R.; Altomare, C.; Suzuki, T.; De Girolamo, P.; Mancini, G.; Besio, G.; Dodd, N.; Schimmels, S. (2019). Foreshore evolution and hydraulic performance of a beach protected by a nearly vertical seawall, in: Henry, P.-Y. et al. Trans-national Access in Hydralab+: Proceedings of the Joint User Meeting Bucharest, Romania, 22-23 May 2019. pp. [1-7]
In: Henry, P.-Y.; Breteler, M.K. (Ed.) (2019). Trans-national Access in Hydralab+: Proceedings of the Joint User Meeting Bucharest, Romania, 22-23 May 2019. [S.n.]: [s.l.]. , more
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Document type: Conference paper
Abstract
    This work presents the results of an experimental investigation on the effects of a sequence of storms on wave overtopping at a nearly vertical battered seawall at the back of a sandy foreshore. The experiments were carried out in the Large Wave Flume (GWK) at Leibniz Universität Hannover (Germany), as part of the research project ICODEP (Impact of Changing fOreshore on flood DEfence Performance), within the European Union programme Hydralab+. The layout consisted of a 10/1 battered seawall and a natural sandy foreshore with an initial 1:15 slope. The beach sand had a nominal diameter of 0.30 mm. Three sequences of individual storms were simulated. Each storm was divided into six steps in which the wave conditions and still water level were varied to represent the peak of an actual storm. Two storm profiles were considered, the first one with a lower level of energy and the second one with a higher one. These were combined in the three different sequences. All the tested wave conditions were designed to be erosive for the beach, with no recovery in between. Each sequence started from a plain beach configuration and the beach was not restored in between storms. The measurements included: the profile of the beach after each sea state tested, waves, wave pressure and forces at the sea wall, sediment concentrations, flow velocity, and wave overtopping.
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