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http://dx.doi.org/10.9765/KSCOE.2022.34.2.27

Experimental Study for Downfall Pressure on the Floor behind Rubble-Mound Structure by Wave Overtopping: Non-Breaking Condition  

Lee, Jong-In (Department of Civil Engineering, Chonnam National University)
Moon, Gang Il (Dept. of Marine and Civil Engineering, Chonnam National University)
Kim, Young Il (Department of Architecture and Civil Engineering, Chonnam National University)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.34, no.2, 2022 , pp. 27-36 More about this Journal
Abstract
The large uprush could be occurred when the waves hit the coastal structure and this uprush by wave could make the overtopping. The downfall of the wave overtopping water over the structure brought about the vertical impact loads. The vertical impact loads should be evaluated in order to design the pavement behind the crown wall however these loads were still unclear. In this study, the hydraulic model tests for the downfall impact loads by wave overtopping were performed and the various conditions were applied to the tests. The effect of the incident wave condition, the freeboard, the armour crest height and the height of the parapet were investigated. The test results showed that the parapet on the crown wall could reduce the wave overtopping however the inclusion of parapet could lead to the increased downfall wave pressures behind the crown wall. The empirical formulae were proposed for evaluating the maximum downfall pressures behind the crown wall of rubble mound structure.
Keywords
downfall pressure; uprush; overtopping; rubble-mound structure; empirical formula;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 Pedersen, J. (1996). Wave forces and overtopping pn crown walls of rubble mound breakwaters. Ph.D. thesis, Series paper 12, ISBN 0909-4296 Hydraulics & Coastal Engineering Lab., Dept. of Civil Engineering, Aalborg University, Denmark.
2 Aniel-Quiroga, I., Vidal, C., Lara, J.L. and Gonzalez, M. (2019). Pressures on a rubble-mound breakwater crown-wall for tsunami impact. Coastal Engineering, 152, 543-558.
3 Chen, X., Hofland, B., Altomare, C., Suzuki, T. and Uijttewaal, W. (2015). Forces on a vertical wall on a dike crest due to overtopping flow. Coastal Engineering, 95, 103522.
4 EurOtop (2018). Manual on Wave Overtopping of Sea Defences and related Structures. Second Edition.
5 Ko, H.S., Lee, J.Y., Jang, S.C. and Oh, S.H. (2022). Experimental investigation of wave force on the pavement behind crown wall of rubble mound seawall. J. of Korean Society of Coastal and Ocean Engineers, 34(1), 19-25 (in Korean).   DOI
6 KOCED (2019). Wave setting up technique for physical model test of harbor and coastal engineering field, SPS-F KOCED 0004-7382:2019 (www.standard.go.kr) (in Korean).
7 Ministry of Oceans and Fisheries (MOF) (2017). Design Standards for Harbours and Fishing Ports in Korean (in Korean).
8 Molines, J., Herrera, M.P. and Medina, J.R. (2018). Extimations of wave forces on crown walls based on wave overtopping rates. Coastal Engineering, 132, 50-62.   DOI
9 Norgaard, J.Q.H., Andersen, T.L. and Burcharth, H.F. (2013). Wave loads on rubble mound breakwater crown walls in deep and shallow water wave conditions. Coastal Engineering, 80, 137-147.   DOI
10 Wolters, G., Muller, G., Bruce, T. and Obhrai, C. (2005). Large-scale experiments on wave downfall pressures. Proceedings of the Institution of Civil Engineers, Maritime Engineering, 158, 137-145.   DOI