AN UNIFIED DESIGN METHOD OF MARITIME WORKS AGAINST WAVES

María Clavero, Montserrat Vílchez, Dulce Pérez, María Izaskun Benedicto, Miguel Angel Losada

Abstract


This work studies the interaction of a composite breakwater and irregular waves as a function of the breakwater geometry and wave characteristics. For this, tests in a flume wave were carried out. The model consisted of a composite breakwater with rectangular cross section and with the width, foundation depth and stone diameter varying in order to know their influence in the breakwater behavior. Results show that reflection coefficient increase with B/L (where B is the width of the dike and L is the wave length) until a maximum value (saturation point) from which it is constant or decreases slightly. Before this point, reflection coefficient depends on breakwater geometry and wave characteristics and when the dike reaches the saturation regime, it only depends on stone diameter or porosity. The value of the sea water elevation at the wall and the horizontal pressure depends on the reflection coefficient. Finally, the relationship between horizontal and vertical forces is linear depending on the reflection regime. This analysis shows that energy distribution is the main variable to know the structural behavior of a dike. Based on these results, a methodology to obtain the loads over the composite breakwater is proposed.

Keywords


composite breakwater; reflection coefficient; porous media; design method

References


Baquerizo, A., 1995. Reflexión del oleaje en playas. Métodos de evaluación y de predicción. Ph. D. thesis, Universidad de Cantabria (Spain).

Clavero, M., 2007. Comportamiento de los diques en talud frente a la acción del oleaje y criterios para el reparto de la probabilidad conjunta de fallo en la vida útil. Phd Thesis, Universidad de Granada (Spain).

Goda Y. 1985. Random seas and design of maritime structures. University of Tokio Press Losada, Miguel A., & Gimenez-Curto, Luis A. 1979. The joint effect of the wave height and period on the stability of rubble mound breakwaters using Iribarren's number. Coastal Engineering, 3, 77–96.

Pérez Romero, D. M., M. Ortega-Sánchez, A. Mo-ino and M. Losada, 2009. Characteristics friction coefficients and scale effects in oscillatory porous flow. Coastal Engineering 56, pp. 931-939.http://dx.doi.org/10.1016/j.coastaleng.2009.05.002

Pérez, D., M. Correa, M. Ortega-Sánchez, M. Clavero, M. A. Losada. 2010. Pressure distributions on a vertical breakwater: experimental study and scale effects. Proceedings of 32nd Conference on Coastal Engineering, Shanghai, China.

Scarcella, D., M. I. Benedicto, A. Mo-ino, M.A. Losada, 2006. Scale effects in rubble mound breakwaters considering wave energy balance. Proc. 30th Int. Conf. on Coastal Engineering. San Diego, pp. 4410-4415.

Takahashi, S., 1996. Desing of Vertical Breakwaters. P. And Harbour Research Institute. M.T., Japan

Van der Meer, Jentsje W. 1992. Stability of the seaward slope of berm breakwaters. Coastal Engineering, 16(2), 205–234.http://dx.doi.org/10.1016/0378-3839(92)90037-U


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