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Effects of developing ice covers on bridge pier scour

From National Research Council Canada

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DOIResolve DOI: https://doi.org/10.1080/00221686.2022.2041497
AuthorSearch for: ORCID identifier: https://orcid.org/0000-0002-9229-2244; Search for: ; Search for: ORCID identifier: https://orcid.org/0000-0003-0683-1932; Search for: ORCID identifier: https://orcid.org/0000-0001-8436-4781; Search for: 1ORCID identifier: https://orcid.org/0000-0002-6048-2393
Affiliation
  1. National Research Council of Canada. Construction
FunderSearch for: NRC; Search for: NSERC
FormatText, Article
Subjectbed shear stress; bridge pier; ice cover; river ice; pier scour; surface roughness
Abstract
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.
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PublisherTaylor & Francis
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  • Journal of Hydraulic Research 60, no. 4 (17 June 2022): 645–655.
LanguageEnglish
Peer reviewedYes
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Record identifiera8913e68-f379-4aee-89d3-0e7d6f1c9c0b
Record created2023-11-09
Record modified2023-11-09
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