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    Anchorage Strength of Closely Spaced Hooked Bars

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    Ajaam_2018_ACI_Structural_Journal.pdf (3.354Mb)
    Issue Date
    2018-07
    Author
    Ajaam, Ali Hussein
    Yasso, Samir
    Darwin, David
    O’Reilly, Matthew
    Sperry, Jayne
    Publisher
    American Concrete Institute
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
    Published Version
    https://iri.ku.edu/reports
    Rights
    Copyright © 2018, American Concrete Institute
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    Abstract
    The effect of close spacing on the anchorage strength of standard hooks is investigated. Sixty-seven simulated beam-column joint specimens were tested, each containing three, four, or six No. 5, 8, or 11 (No. 16, 25, or 36) hooked bars arranged in one or two layers with center-to-center spacing ranging from two to six bar diameters. Anchorage strengths are compared with those of specimens containing two hooked bars with spacings of six to 12 bar diameters. The results demonstrate that the provisions in ACI 318-14 tend to overestimate the anchorage strength of hooked bars as concrete compressive strength and bar size increase and as spacing between bars decreases. Decreasing center-to-center spacing below six bar diameters results in lower anchorage strengths than for hooked bars with wider spacing. The anchorage strength of hooked bars can be represented by considering the minimum of the horizontal and vertical spacing between bars.
    URI
    http://hdl.handle.net/1808/26622
    DOI
    https://doi.org/10.14359/51702065
    Collections
    • Infrastructure Research Institute Scholarly Works [324]
    Citation
    Ajaam, A., Yasso, S., Darwin, D., O’Reilly, M., and Sperry, J., “Anchorage Strength of Closely-Spaced Hooked Bars,” ACI Structural Journal, Vol. 115, No. 4, July-Aug. 2018, pp. 1143-1152.

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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