PROBABILISTIC CALCULATIONS OF WAVE FORCES ON VERTICAL STRUCTURES

J.W. van der Meer, K. d'Angremond, J. Juhl

Abstract


In the past wave forces on vertical structures have been measured in a number of site specific projects at the Danish Hydraulic Institute and Delft Hydraulics. For nine selected cases, the data on forces and moments were re-analyzed, leading to an expression for reliability of Goda's formula for calculation of forces and moments on vertical breakwaters. Secondly, probabilistic level II design calculations were made using Goda's formula with the found reliability. It appears that the reliability of this formula has by far the largest influence on the probability of failure. Finally the influence of model tests on the probability of failure was studied. In that case the wave height has the largest influence on stability, which is usual for most coastal structures designs.

Keywords


wave force; vertical structure; probabilistic calculation

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