Reanalysis of Breakwater Stability with Steep Foreshore (original) (raw)

Coastal Engineering 2008, 2009

Abstract

2 The effect of wave breaking on a steep foreshore on the stability of a rubble mound breakwater is addressed in this paper. Results from stability tests with a rock armoured breakwater and two different foreshore slopes (1:8 and 1:30) were reanalysed. The wave conditions at the toe of the breakwater were investigated by a surf-zone model. The damage to the armour layer was larger in tests with steep foreshore than in tests with a gentle foreshore slope. The occurrence of plunging breakers and the uncertainties of the wave height measurements were analysed. Plunging breakers on the foreshore could have an adverse influence on the armour layer stability and should be considered in the design.

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