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    Length Parameter for Scaling Abutment Scour Depth

    New search for: Puer Xu
    New search for: Niansheng Cheng
    New search for: Maoxing Wei

    Flow constriction caused by bridge abutment increases bed shear stress and thus enhances local scour. For scaling the maximum scour depth at the abutment, either abutment length or flow depth has been empirically used in previous studies. By performing a step-by-step analysis, this study proposes a new length scale, which is able to represent combined effects of abutment length, approach flow depth and channel width. Physically, the new length scale describes the maximum possible dimension of the associated vortex system (or large-scale turbulence). Six series of data compiled from the published literature were used in the analysis. The results indicate that the new length scale helps improve the agreement of predictions with the experimental data.

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    Length Parameter for Scaling Abutment Scour Depth

    New search for: Puer Xu
    New search for: Niansheng Cheng
    New search for: Maoxing Wei

    Flow constriction caused by bridge abutment increases bed shear stress and thus enhances local scour. For scaling the maximum scour depth at the abutment, either abutment length or flow depth has been empirically used in previous studies. By performing a step-by-step analysis, this study proposes a new length scale, which is able to represent combined effects of abutment length, approach flow depth and channel width. Physically, the new length scale describes the maximum possible dimension of the associated vortex system (or large-scale turbulence). Six series of data compiled from the published literature were used in the analysis. The results indicate that the new length scale helps improve the agreement of predictions with the experimental data.

    Access

    Download

    Length Parameter for Scaling Abutment Scour Depth

    New search for: Puer Xu
    New search for: Niansheng Cheng
    New search for: Maoxing Wei

    Flow constriction caused by bridge abutment increases bed shear stress and thus enhances local scour. For scaling the maximum scour depth at the abutment, either abutment length or flow depth has been empirically used in previous studies. By performing a step-by-step analysis, this study proposes a new length scale, which is able to represent combined effects of abutment length, approach flow depth and channel width. Physically, the new length scale describes the maximum possible dimension of the associated vortex system (or large-scale turbulence). Six series of data compiled from the published literature were used in the analysis. The results indicate that the new length scale helps improve the agreement of predictions with the experimental data.

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    Download

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    Title:

    Length Parameter for Scaling Abutment Scour Depth

    Contributors:

    Puer Xu (author) / Niansheng Cheng (author) / Maoxing Wei (author)

    Published in:

    Water, Vol 12, Iss 12, p 3508 (2020)

    Publication date:

    2020

    ISSN:

    2073-4441

    DOI:

    https://doi.org/10.3390/w12123508

    Type of media:

    Article (Journal)

    Type of material:

    Electronic Resource

    Language:

    Unknown

    Keywords:

    abutment scour , length scale , constriction effect , hydraulic radius , maximum scour depth , Hydraulic engineering , TC1-978 , Water supply for domestic and industrial purposes , TD201-500

    Metadata by DOAJ is licensed under ​CC BY-SA 1.0

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