EXPERIMENTAL STUDY OF PRESSURE DISTRIBUTIONS DUE TO THE BREAKING WAVE IMPACTS

Dogan Kisacik, Peter Troch, Philippe Van Bogaert

Abstract


Results from wave impact tests are used to analyze the pressure distribution on a vertical structure with an overhanging horizontal cantilever slab. The structure faces two individual impacts, occurring sequentially on the vertical and horizontal parts. An expression is being proposed for the location of maximum pressures p_max (z_max) on the vertical part as a function of the wave steepness (H⁄L_0 ). The boundary conditions for occurring of high dynamic pressures are determined both on the vertical and horizontal part. Three different pressure distribution cases are proposed as SBW, BW and BWSAT according to the breaker type. For each breaker type, the local pressure ratio’s p_h3⁄p_h1 , p_h1⁄p_v1 , and p_h2⁄p_v1 are analyzed, where p_h1, p_h2 and p_h3 are the local peak pressure at the SWL and top and bottom of the vertical part respectively, whereas, p_v1 is the local peak pressure on the horizontal part. Recommended profiles are calculated from local p_max values.

Keywords


vertical walls; breaking wave impact; impact pressure and force

References


Goda, Y., 1974, "New wave pressure formulae for composite breakwater", Proc. of 14th Int. Conf. Coastal Eng., Copenhagen, Denmark, ASCE, New York (1974, pp. 1702–1720

Hattori, M.; Arami, A.; Yui, T., 1994, "Wave impact pressure on vertical walls under breaking waves of various type", Coastal Engineering, v 22, n 1-2, p 79-114, Jan 1994http://dx.doi.org/10.1016/0378-3839(94)90049-3

Hull, P.; Müller, G., 2002, "An investigation of breaker heights, shapes and pressures" Ocean Engineering, v 29, n 1, p 59-79, September 21, 2002

Kirkgoz, M.S., 1982, "Shock pressure of breaking waves on vertical walls" Journal of the Waterway, Port, Coastal and Ocean Division, v 108, n WW1, p 81-95, Feb 1982

Kisacik, D.; Troch, P.; Van Bogaert, P., 2012, "Description of loading conditions due to violent wave impacts on a vertical structure with an overhanging horizontal cantilever slab", Accepted to journal of "Coastal engineering".http://dx.doi.org/10.1016/j.coastaleng.2011.10.001

Kortenhaus, A.: and Hocine Oumeraci, H., 1998, "Classification of wave loading on monolithic coastal structures", Proc. 26th. Int. Coast. Engrg. Conf., ASCE, pp: 867-880 p Year.1998

Oumeraci, H; Kortenhaus, A; Allsop, W; de Groot, M; Crouch, R; Vrijling, H; Voortman, H, 2001, "Probabilistic Design Tools for Vertical Breakwaters", Balkema Publishers, New York.

Partenscky, H., 1988, "Dynamic forces due to waves breaking at vertical coastal structures" Twenty First Costal Eng Conf, p 2504-2518, 1988, Twenty First Costal Eng Conf


Full Text: PDF

Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.