Effects of developing ice covers on bridge pier scour

Par Conseil national de recherches du Canada

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DOI	Trouver le DOI : https://doi.org/10.1080/00221686.2022.2041497
Auteur	Rechercher : Sirianni, Dario A. B.Identifiant ORCID : https://orcid.org/0000-0002-9229-2244; Rechercher : Valela, Christopher; Rechercher : Rennie, Colin D.Identifiant ORCID : https://orcid.org/0000-0003-0683-1932; Rechercher : Nistor, Ioan Identifiant ORCID : https://orcid.org/0000-0001-8436-4781; Rechercher : Almansour, Husham¹Identifiant ORCID : https://orcid.org/0000-0002-6048-2393
Affiliation	Conseil national de recherches du Canada. Construction
Bailleur de fonds	Rechercher : NRC; Rechercher : NSERC
Format	Texte, Article
Sujet	bed shear stress; bridge pier; ice cover; river ice; pier scour; surface roughness
Résumé	Current research investigating ice-covered bridge pier scour has focused on the effects of fully developed ice jams. However, based on observationsat various stages of development, ice covers are not always fully developed. This experiment investigated pier scour at various stages of a simulatedfloating ice jam’s development, with a constant flow rate. Various channel-spanning ice cover lengths were tested, along with one circular localizedcover, and resulting pier scour was compared to free-surface flow pier scour. Five lengths of downstream initiated ice covers were tested, withlengths upstream of the pier being 0, 0.63, 1.33, 2.66 and 5.32 m. The local cover’s diameter was 0.27 m, three times the pier diameter. The 2.66-mice cover produced the greatest scour and near-bed Reynold stress, with greater scour depth and volume, respectively, by 46.9% and 238% comparedto free-surface flow conditions, whereas the local cover produced the smallest scour increase.
Date de publication	2022-06-17
Maison d’édition	Taylor & Francis
Licence	Creative Commons, Attribution - Pas d’Utilisation Commerciale – Pas de Modification 4.0 International (CC BY-NC-ND 4.0) https://creativecommons.org/licenses/by-nc-nd/4.0/deed.fr
Dans	Journal of Hydraulic Research 60, nº 4 (17 juin 2022) : 645–655.
Langue	anglais
Publications évaluées par des pairs	Oui
Exporter la notice	Exporter en format RIS
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Identificateur de l’enregistrement	a8913e68-f379-4aee-89d3-0e7d6f1c9c0b
Enregistrement créé	2023-11-09
Enregistrement modifié	2023-11-09

Date de modification :: 2024-07-06