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http://dx.doi.org/10.2478/IJNAOE-2013-0224

Effects of vertical wall and tetrapod weights on wave overtopping in rubble mound breakwaters under irregular wave conditions  

Park, Sang Kil (Department of Civil Engineering, Pusan National University)
Dodaran, Asgar Ahadpour (Department of Civil Engineering, Pusan National University)
Han, Chong Soo (Department of Civil Engineering, Pusan National University)
Shahmirzadi, Mohammad Ebrahim Meshkati (Disaster Prevention Research Institute, Kyoto University)
Publication Information
International Journal of Naval Architecture and Ocean Engineering / v.6, no.4, 2014 , pp. 947-964 More about this Journal
Abstract
Rubble mound breakwaters protect the coastal line against severe erosion caused by wave action. This study examined the performance of different sizes and properties (i.e. height of vertical wall and tetrapod size) of rubble mound breakwaters on reducing the overtopping discharge. The physical model used in this study was derived based on an actual rubble mound in Busan Yacht Harbor. This research attempts to fill the gap in practical knowledge on the combined effect of the armor roughness and vertical wall on wave overtopping in rubble mound breakwaters. The main governing parameters used in this study were the vertical wall height, variation of the tetrapod weights, initial water level elevation, and the volume of overtopping under constant wave properties. The experimental results showed that the roughness factor differed according to the tetrapod size. Furthermore, the overtopping discharge with no vertical wall was similar to that with relatively short vertical walls (${\gamma}_v=1$). Therefore, the experimental results highlight the importance of the height of the vertical wall in reducing overtopping discharge. Moreover, a large tetrapod size may allow coastal engineers to choose a shorter vertical wall to save cost, while obtaining better performance.
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  • Reference
1 Aminti, P.L. and Frranco, L., 1988. Wave overtopping on rubble mound breakwaters. Proceedings 21st International Conference on Coastal Engineering, ASCE, Malaga, Spain, June 1988, pp.770-781.
2 Bradbury, A.P. and Allsop, N.W.H., 1988. Hydraulic effects of breakwater crownwalls. Proceedings Conference on Design of Breakwaters, Institution of Civil Engineers, Thomas Telford, London, May 1988, pp.385-396.
3 Bruce, T., van der Meer, J.W., Franco, L. and Pearson, L.M., 2009. Overtopping performance of different armour units for rubble mound breakwaters. Special Issue of Journal of Coastal Engineering, 56(2), 2009, pp.166-179.   DOI   ScienceOn
4 Busan Port Authority, 2011. World port of source, Port of Busan. [online] Avaliable at: [Accessed July 2011].
5 Franco, L., de Gerloni, M. and van der Meer, J.W., 1994. Wave overtopping at vertical and composite breakwaters. ASCE, Proceedings of 24th International Conference on Coastal Engineering, Kobe, Japan, 23-28 October 1994, pp.1030- 1045.
6 Franco, L., 1993. Overtopping of vertical face breakwaters, results of model tests and admissible overtopping rates. Proceedings MAST2-MCS, 1st project workshop, Madrid, Spain, October 1993.
7 Franco L., Geeraerts J., Briganti R., Willems M., Bellotti G. and J. De Rouck., 2009. "Prototype and small-scale model tests of wave overtopping at shallow rubble-mound breakwaters" the Ostia-Rome yacht harbour case. Coastal Engineering, 56, pp.154-165.   DOI   ScienceOn
8 Goda, Y., 1985. Random seas and design of maritime structures. Tokyo: University of Tokyo Press.
9 Jensen, O.J. and Juhl, J., 1987. Wave overtopping on breakwaters and sea dikes. Proceedings of Second international conference on coastal and port engineering in developing countries, Beijing, China, September 1987.
10 Mansard, E.P.D. and Funke, E.R., 1980. Measurement of incident and reflected spectra using a least squares method. National Conference Publication Institution of Engineers, Sydney, Australia, 1980, pp.154-172.
11 Owen, M.W., 1980. Design of seawalls allowing for wave overtopping. Wallingford: Hydraulics Research Station.
12 Pullen, T., Allsop, N.W.H., Bruce. T., Kortenhaus, A., Schuttrumpf, A. and Van der Meer, J.W., 2007. EurOtop - wave overtopping of sea defences and related structures: ASSESSMENT manual. Hamburg: Die Kuste.
13 Saville, T. and Caldwell, J.M., 1953. Experimental study of wave overtopping on shore structures. Proc. of Minnesota International Hydraulics Convention, IAHR, ASCE, Minneapolis, Minnesota, USA, May, 1953. pp. 261-269.
14 Weggel, R.J., 1976. Wave overtopping equation. Fifteenth Coastal Engineering Conference, American Society of Civil Engineers, New York, USA, July 1976, pp.2737-2755.
15 Van der Meer, J.W., 2002. Technical report on wave run-up and wave overtopping at dikes. Technical Advisory Committee on Flood Defence. Delft, The Netherlands, May 2002.
16 Van der Meer, J.W. and De Waal, J.P., 1993. Water movement on slopes. Influence of berm, roughness, shallow foreshore and oblique long- and short- crested wave attack. Delft: Delft Hydraulics.