STATISTICAL DISTRIBUTION OF HORIZONTAL WAVE FORCES ON VERTICAL BREAKWATERS

Janice McKenna, William Allsop

Abstract


This paper discusses the statistical distribution of wave impact forces on vertical wall structures. It describes new analysis carried out based on the distribution type to identify the parameter combinations that lead to wave impacts. Comprehensive 2-dimensional random wave model tests were carried out to measure wave pressures on a range of structure types. Initial analysis of these tests showed that the Weibull distribution could be used to describe non-breaking wave forces. For some structural configurations however the wave forces were found to give a poor fit with the Weibull distribution. These data had been excluded from the initial analysis. The new analysis described in this paper has resulted in a revised parameter map to summarise the risk of wave impact, derived from the full data set and based on the distribution type.

Keywords


wave force; breakwater; statistical distribution

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