Experimental evidence of the influence of recurves on wave loads at vertical seawalls

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dc.identifier.uri http://dx.doi.org/10.15488/10855
dc.identifier.uri https://www.repo.uni-hannover.de/handle/123456789/10937
dc.contributor.author Stagonas, Dimitris
dc.contributor.author Ravindar, Rajendran
dc.contributor.author Sriram, Venkatachalam
dc.contributor.author Schimmels, Stefan
dc.date.accessioned 2021-05-03T05:28:05Z
dc.date.available 2021-05-03T05:28:05Z
dc.date.issued 2020
dc.identifier.citation Stagonas, D.; Ravindar, R.; Sriram, V.; Schimmels, S.: Experimental evidence of the influence of recurves on wave loads at vertical seawalls. In: Water 12 (2020), Nr. 3, 889. DOI: https://doi.org/10.3390/w12030889
dc.description.abstract The role of recurves on top of seawalls in reducing overtopping has been previously shown but their influence in the distribution and magnitude of wave-induced pressures and forces on the seawall remains largely unexplored. This paper deals with the effects of different recurve geometries on the loads acting on the vertical wall. Three geometries with different arc lengths, or extremity angles (αe), were investigated in large-scale physical model tests with regular waves, resulting in a range of pulsating (non-breaking waves) to impulsive (breaking waves) conditions at the structure. As the waves hit the seawall, the up-rushing flow is deflected seawards by the recurve and eventually, re-enters the underlying water column and interacts with the next incoming wave. The re-entering water mass is, intuitively, expected to alter the incident waves but it was found that the recurve shape does not affect wave heights significantly. For purely pulsating conditions, the influence of αe on peak pressures and forces was also negligible. In marked contrast, the mean of the maximum impulsive pressure and force peaks increased, even by a factor of more than two, with the extremity angle. While there is no clear relation between the shape of the recurve and the mean peak pressures and forces, interestingly the mean of the 10% highest forces increases gradually with αe and this effect becomes more pronounced with increasing impact intensity. © 2020 by the authors. eng
dc.language.iso eng
dc.publisher Basel : MDPI
dc.relation.ispartofseries Water 12 (2020), Nr. 3
dc.rights CC BY 4.0 Unported
dc.rights.uri https://creativecommons.org/licenses/by/4.0/
dc.subject seawalls eng
dc.subject overtopping eng
dc.subject extremity angles (αe) eng
dc.subject recurves eng
dc.subject recurve geometry eng
dc.subject vertical seawalls eng
dc.subject wave loads and pressures eng
dc.subject pulsating andimpulsive conditions eng
dc.subject.ddc 690 | Hausbau, Bauhandwerk ger
dc.title Experimental evidence of the influence of recurves on wave loads at vertical seawalls
dc.type article
dc.type Text
dc.relation.essn 2073-4441
dc.relation.doi https://doi.org/10.3390/w12030889
dc.bibliographicCitation.issue 3
dc.bibliographicCitation.volume 12
dc.bibliographicCitation.firstPage 889
dc.description.version publishedVersion
tib.accessRights frei zug�nglich

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