Comparative Study of Breaking Wave Forces on a Quasi-Prototype Recurved Seawall
01 Jan 2019-pp 489-501
TL;DR: In this paper, a quasi-prototype vertical seawall attached with recurve in a large wave flume (GWK) with the slope of 1:10 to the study the breaking wave impact on the structure.
Abstract: The large-scale experiments were conducted on a quasi-prototype vertical seawall attached with recurve in a large wave flume (GWK) with the slope of 1:10 to the study the breaking wave impact on the structure. Recurves are either curved parapets or walls with entirely curved seaward faces that are effective in reducing wave overtopping without increasing the crest height of the structure. The nondimensionalized impact pressure is plotted along the depth and compared to three recurves and breaking cases. The impact pressure and horizontal impact force compared with traditional theoretical design methodologies like Goda, Minikin, and Blackmore & Hewson’s methods and the variations are reported. Pressure measurements obtained from tactile sensor/pressure pad are compared with a traditional pressure transducer.
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29 Jan 1974
TL;DR: In this paper, a wave pressure formulae for the whole ranges of wave action from non-breaking to post-breaking waves with smooth transition between them is proposed. But the proposed wave pressure is not suitable for the case of non-sliding breakwaters.
Abstract: A proposal is made for new wave pressure formulae, which can be applied for the whole ranges of wave action from nonbreaking to postbreaking waves with smooth transition between them. The design wave height is specified as the maximum wave height possible at the site of breakwater. The new formulae as well as the existing formulae of Hiroi, Sainflou, and Minikin have been calibrated with the cases of 21 slidings and 13 nonslidings of the upright sections of prototype breakwaters. The calibration establishes that the new formulae are the most accurate ones.
230 citations
TL;DR: In this paper, a rational expression for the estimation of wave impact pressures on coastal structures has been derived based on the local wave parameters at impact and includes a coefficient related to the percentage of air entrained in the incident wave.
112 citations
TL;DR: In this paper, large-scale experiments were conducted at the Coastal Research Centre (FZK), Germany to characterize the mechanics and characteristics of impact pressures due to breaking waves on a vertical sea wave.
Abstract: Large-scale experiments were conducted at the Coastal Research Centre (FZK), Germany to characterize the mechanics and characteristics of impact pressures due to breaking waves on a vertical sea wa...
24 citations
01 Jan 2010
TL;DR: In this article, a vertical wall with a cantilevering slab and a simple vertical wall were used to evaluate the existing prediction formulas for a range of values of water depth, wave period and wave height.
Abstract: Physical experiments (at a scale of 1/20) are carried out using two different models: a vertical wall with cantilevering slab and a simple vertical wall. Tests are conducted for a range of values of water depth, wave period and wave height. The largest peak pressures were recorded at the SWL (82 ) on the vertical part and at the fixed corner of the cantilever slab (90 ). Pressure measurements and derived force calculations on the simple vertical wall were used to evaluate the existing prediction formulas. A significant effect of the cantilevering part is observed on the total horizontal force and overturning moment of a simple vertical wall. This is due to secondary impact occurring on the overhanging part by a jet climbing on the vertical part.
11 citations