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Clear-water scour at comparatively large cylindrical piers

2013-11Journal article Open access
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dc.contributor.authorLança, Rui
dc.contributor.authorFael, Cristina
dc.contributor.authorMaia, Rodrigo
dc.contributor.authorPêgo, João
dc.contributor.authorCardoso, António
dc.date.accessioned2014-02-06T13:03:50Z
dc.date.available2014-02-06T13:03:50Z
dc.date.issued2013-11
dc.description.abstractNew long-duration clear-water scour data were collected at single cylindrical piers with the objective of investigating the effect of sediment coarseness, Dp=D50 (Dp = pier diameter; D50 = median grain size) on the equilibrium scour depth and improving the scour depth time evolution modeling by making use of the exponential function suggested in the literature. Experiments were carried out for the flow intensity close to the threshold condition of initiation of sediment motion, imposing wide changes of sediment coarseness and flow shallowness, d=Dp (d = approach flow depth). The effect of sediment coarseness on the equilibrium scour depth was identified; existing predictors were modified to incorporate this effect for U=Uc ≈ 1.0; Dp=D50 > ≈60 and d=Dp ≥ 0.5; the complete characterization of a known scour depth time evolution model was achieved for U=Uc ≈ 1.0, 60 < Dp=D50 < 500 and 0.5 ≤ d=Dp ≤ 5.0.por
dc.identifier.doihttp://dx.doi.org/10.1061/(ASCE)HY.1943-7900.0000788
dc.identifier.issn0733-9429
dc.identifier.otherAUT: RLA01366;
dc.identifier.urihttp://hdl.handle.net/10400.1/3435
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherAmerican Society of Civil Engineeringpor
dc.relationExperimental study of local scour at complex bridge piers
dc.relation.ispartofseries139;
dc.relation.publisherversionhttp://ascelibrary.org/doi/abs/10.1061/(ASCE)HY.1943-7900.0000788por
dc.subjectBridgespor
dc.subjectCylindrical pierpor
dc.subjectFlow shallownesspor
dc.subjectSediment coarsenesspor
dc.subjectLocal scour equilibrium depthpor
dc.subjectLocal scour time evolutionpor
dc.titleClear-water scour at comparatively large cylindrical pierspor
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleExperimental study of local scour at complex bridge piers
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FECM%2F101353%2F2008/PT
oaire.citation.conferencePlaceEstados Unidospor
oaire.citation.endPage1125por
oaire.citation.startPage1117por
oaire.citation.titleJournal of Hydraulic Engineeringpor
oaire.citation.volume11por
oaire.fundingStream3599-PPCDT
person.familyNameLança
person.givenNameRui
person.identifierR-001-Y2N
person.identifier.ciencia-idCD11-F4F2-95A3
person.identifier.orcid0000-0002-7753-3767
person.identifier.ridE-5613-2017
person.identifier.scopus-author-id55436772300
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication48b48fbe-d952-4eea-8ec5-b989420561d9
relation.isAuthorOfPublication.latestForDiscovery48b48fbe-d952-4eea-8ec5-b989420561d9
relation.isProjectOfPublicationb7bf21fe-bde8-423d-8300-a2f32b3fc6fc
relation.isProjectOfPublication.latestForDiscoveryb7bf21fe-bde8-423d-8300-a2f32b3fc6fc

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