Yalcin Yuksel, Tugce Yuksel, Esin Cevik, Berna Ayat Aydoğan, Burak Aydogan, Anil Guner, Yesim Celikoglu, Fulya Islek


Seawalls are the most common form of coastal defence, they are the physical barriers between land and sea. They are parallel to the beach used to prevent overtopping and flooding due to storm waves. They can be constructed in the front or back of the shoreline. However, the front face of a seawall is subjected to high energy wave action, which can induce the problem of toe scour. Scours in front of the breakwaters and the seawalls have been investigated heavily in the past, but it still remains a concern for coastal engineers. In those previous studies, the sea bottom was considered as flat or having a very mild slope. These may not be valid for steep slope beach in front of a structure. The seawall stands in run-up region in this study. The seawall and the beach profile interaction was investigated by experimentally. The beach slopes were 1/5 and 1/10 in the experiments.


Seawall; run-up; beach profile; toe scour

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Dalrymple, R.A.. 1992. “Prediction of Storm/Normal Beach Profiles,”' Journal of Waterway, Port, Coastal and Ocean Engineering. 118(2):193-200.

Fowler, J.E. 1992. Scour problems and methods for prediction of maximum scour at vertical seawalls, Technical Rep. No. CERC-92-16, U.S. Army Corps of Engineers, Waterways Experiment Station, Vicksburg , Miss.

Gao, X. and Inouchi, K. 1998. The characteristics of scouring and depositing in front of vertical breakwaters by broken clapotis, Coastal Eng., 40, 99-113.

Hattori, M. and Kawamata, R. 1980. “Onshore-offshore transport and beach profile change”, Proc. 17th conf. Coastal eng., Sydney, pp. 1175-1194.

Hattori, M. and R. Kawamata, 1980. “Onshore-offshore transport and beach profile change” Proceedings, Seventeenth Coastal Engineering Conference, March 23-28, Sydney, Australia, ASCE, New York: 1175-1194.

Herbich, J.B. 1999. Handbook of Coastal Engineering, McGraw-Hill

Hughes, S.A. and Fowler, J.E. 1991. “Wave induced scour prediction at vertical walls”, Proc. Coastal Sediments’91, ASCE, New York, 1886 -1899.

Irei I. and Nadaoka, K. 1984. “Laboratory reproduction of seabed scour in front of breakwaters” Proc., 19th Int. Conf. on Coastal Engineering, ASCE, New York, 1715-1731

Mase, H., and Iwagaki, Y. (1985). “Runup of random waves on gentle slopes.” Proc. 19th Int. Conf. on Coastal Engineering, ASCE, Reston, VA, 593–609.

Mase, H., Tamada, T., Yasuda, T., Hedges, T. S., and Reis, M.T. 2013. “Wave Runup and Overtopping at Seawalls Built on Land and in Very Shallow Water”. J. Waterway, Port, Coastal, Ocean Eng., 139:346-357.

O’Donoghue, T. 2001. “N-type sediment bed response under standing wave”, Journal of Waterway, Port, Coastal, and Ocean Eng., ASCE, 127(4), 245-248

Oumeraci, H. 1994. “Scour in front of vertical breakwaters-Review of problems”, Proc. Int. Workshop on Wave Barriers in deep water, Port and Harbour Research Institute, Jokosuka, Japan, 281-307.

Peña, J.M., Sánchez-González, J.F., and Díaz-Sánchez, R. 2013. “Wave Runup in a Sand Bed Physical Model”. J. Waterway, Port, Coastal, Ocean Eng., 140(4):1-11.

Silvester, R. and Hsu, J.R.C. 1997. Coastal Stabilization, World Scientific, Singapore.

Sümer, B.M. and Fredsøe, J. 2000. “Experimental study of 2D scour and its protection at a rubble mound breakwater” Coastal Eng. 40, 59-87.

Sunamura, T. and Horikawa, K. 1974. “Two-dimensional beach transformation due to waves”, Proc. of 14th ICCE, 920-938.

Tsai C.P., Chen, H.B., and You, S.S. 2009. “Toe scour of seawall on a steep seabed by breaking waves” Journal of Waterway, Port, Coastal, and Ocean Engineering, ASCE.

Tsai C.P., Wang, J.S., and Lin C. 1998. “Down-rush flow from waves on sloping seawalls” Ocean Engineering, 25, 295-308.

Xie, S.L. 1981. “Scouring pattern in front of vertical breakwaters and their influence on the stability of the foundations of the breakwaters” Rep. Dept. of Civil Engineering, Delft Univ. of Technology, Delft The Netherlands.

Yuksel, Y., Cevik, E., Aydogan, B., Kiziloz, B., Senturk, E., (2012), “Seawall-Beach Profile Interaction on Run-Up Zone”, ISOPE 2012, Rhodes, Greece.