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Classification of bore patterns induced by storm waves overtopping a dike crest and their impact types on dike mounted vertical walls – a large-scale model study Streicher, M.; Kortenhaus, A.; Marinov, K.K.; Hirt, M.; Hughes, S.; Hofland, B.; Scheres, B.; Schüttrumpf, H.F.R. (2019). Classification of bore patterns induced by storm waves overtopping a dike crest and their impact types on dike mounted vertical walls – a large-scale model study. Coast. Eng. J. 61(3): 321-339. https://dx.doi.org/10.1080/21664250.2019.1589635 In: Coastal Engineering Journal. Japan Society of Civil Engineers, Committee on Coastal Engineering: Tokyo. ISSN 0578-5634; e-ISSN 1793-6292, meer

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Beschikbaar in	Auteurs
VLIZ: Non-open access 340769 [ aanvragen ]

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Trefwoord

Marien/Kust

Author keywords

Bore impact; pressure and force; overtopping bore; sea dike; vertical crest wall; large-scale physical model; WALOWA project

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Auteurs		Top
Streicher, M. Kortenhaus, A. Marinov, K.K. Hirt, M.	Hughes, S. Hofland, B. Scheres, B. Schüttrumpf, H.F.R.

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Abstract

Short duration bores in the coastal zone are generated by wave breaking in shallow water and mild foreshore conditions. In storm weather situations and for sea level rise scenarios, these bores approach the dike and interact with previously overtopped or reflected bores. Combined laser scanner and video measurements were used to study the complex and turbulent bore interaction processes. Five bore interaction patterns were distinguished as (1) regular bore pattern; (2) collision bore pattern; (3) plunging breaking bore pattern; (4) sequential overtopping bore pattern, and (5) catch-up bore pattern. Video images of the bore running up the wall and motion tracking of the leading edge were used to obtain a time series of the run-up water at the wall. The impact loads of the bore hitting the wall on the promenade were studied based on the signal of a vertical array of 13 pressure sensors installed over the wall height. Three impact types were distinguished and classified as (1) impulsive impact type; (2) dynamic impact type; and (3) quasi-static impact type. The majority of ~2/3 of the total number of impacts were comprised of the quasi-static impact type.

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