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    Elimination of Diagonal Reinforcement in Earthquake-Resistant Coupling Beams through Use of Fiber-Reinforced Concrete

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    SP-313_04_citation.pdf (855.8Kb)
    Issue Date
    2017
    Author
    Parra-Montesinos, Gustavo
    Wight, James K.
    Kopczynski, C.
    Lequesne, Rémy D.
    Setkit, M.
    Conforti, A.
    Ferzli, J.
    Publisher
    American Concrete Institute
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
    Is part of series
    ACI Special Publication;313
    Published Version
    https://www.concrete.org/publications/internationalconcreteabstractsportal.aspx?m=details&ID=51689686
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    Abstract
    The design of reinforced concrete coupling beams in regions of high seismicity typically includes the use of diagonal bars designed to resist the entire shear demand, along with closely spaced transverse reinforcement to provide concrete confinement and diagonal bar support. While results from experimental investigations indicate that this design leads to stable behavior under large displacement reversals, the required reinforcement detailing is labor intensive and time consuming. One alternative that has been proven successful to simplify reinforcement detailing in coupling beams is the addition of discontinuous, deformed steel fibers to the concrete. Test results indicate that elimination of diagonal reinforcement, along with substantial reductions in confinement reinforcement over most of the beam span, are possible in coupling beams with span-to-depth ratios greater than or equal to approximately 2.2 when a tensile strain-hardening fiber reinforced concrete is used. Given the advantages of eliminating diagonal reinforcement in coupling beams, this new design was incorporated in high-rise structures in the State of Washington, USA, starting in the early 2010s. In this paper, a brief summary of relevant experimental results and the implementation of fiber reinforced concrete coupling beams in high-rise earthquake-resistant construction is provided.
    URI
    http://hdl.handle.net/1808/24873
    Collections
    • Infrastructure Research Institute Scholarly Works [320]
    Citation
    Parra-Montesinos, G. J., Wight, J. K., Kopczynski, C., Lequesne, R. D., Setkit, M., Conforti, A., and Ferzli, J. (2017). "Elimination of Diagonal Reinforcement in Earthquake-Resistant Coupling Beams through Use of Fiber-Reinforced Concrete.” SP-313: Proceedings of the First ACI and JCI Joint Seminar: Design of Concrete Structures Against Earthquake and Tsunami Disasters, Special Publication of the American Concrete Institute, Farmington Hills, MI.

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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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