VERIFICATION OF THE CONSEQUENCES OF WAVEDIRECTIONALITY ON THE LOADING OF LONG COASTAL STRUCTURES BY FIELD EXPERIMENTS

J. van Heteren, H.C. Botma, A.P. Roskam, J.A. Battjes

Abstract


Field measurements were done at the Haringvliet barrier to verify the theory that loading on long structures shows a considerable reduction if wave directionality is taken into account instead of calculating with uniform long crested waves. Wave loads were measured with a row of pressure meters at the barrier. Directional parameters of the incoming wave field were calculated from the signals of a 3-component acoustic current meter, mounted 7.5 meter in front of the barrier. These calculations were different from those used for an open sea, since the waves near a reflecting structure are formed by two highly correlated wave fields. The agreement between the results of the measurements and theory is good.

Keywords


field experiment; wave direction; coastal structures; structure loading

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