Breaking wave loads at vertical seawalls and breakwaters |
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| Authors: | Giovanni Cuomo William Allsop Tom Bruce Jonathan Pearson |
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| Institution: | 1. Coastal Structures Group, HR Wallingford, Howbery Park, Wallingford, OX10 8BA, UK;2. HAREC s.r.l., Via Gregorio VII 80, Rome, 00165, Italy;3. Coastal Structures Group, HR Wallingford, Howbery Park, Wallingford, OX10 8BA, UK;4. Department of Civil and Environmental Engineering, University of Southampton, UK;5. School of Engineering & Electronics, University of Edinburgh, King''s Buildings, Edinburgh, EH9 3JL, UK;6. School of Engineering, The University of Warwick, Coventry, CV4 7AL, UK |
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| Abstract: | This paper presents recent advances in knowledge on wave loads, based on experimental work carried out in the CIEM/LIM large flume at Barcelona within the framework of the VOWS (Violent Overtopping by Waves at Seawalls) project. Both quasi-static and impact wave forces from the new data set have been compared with predictions by empirical and analytical methods. The scatter in impact forces has been found to be large over the whole range of measurements, with no existing method giving especially good predictions. Based on general considerations, a simple and intuitive set of prediction formulae has been introduced for quasi-static and impact forces, and overturning moments, giving good agreement with the new measurements. New prediction formulae have been compared with previous measurements from physical model tests at small and large scale, giving satisfactory results over a relatively wide range of test conditions. The time variation of wave impacts is discussed, together with pressure distribution up the wall, which shows that within experimental limitations the measured pressures are within existing limits of previous study. |
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| Keywords: | Impulsive loads Seawalls Caisson breakwaters Wave breaking Pressure impulse Wave impacts |
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