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    A Novel Model for Shear Strength Prediction of a Steel–UHPC Composite Structure Considering Interface Friction

    Source: Journal of Structural Engineering:;2024:;Volume ( 150 ):;issue: 008::page 04024100-1
    Author:
    Xuhui Zhang
    ,
    Long Cheng
    ,
    Fu Xu
    ,
    Caiqian Yang
    ,
    Lei Wang
    DOI: 10.1061/JSENDH.STENG-13164
    Publisher: American Society of Civil Engineers
    Abstract: Existing studies have shown that the interface friction force positively affects and improves the shear behavior at the stud-connected steel–ultrahigh performance concrete (UHPC) interface. However, the effects of the interface friction force have not been well understood and quantified yet. The present study proposes a novel model to quantify the interface friction force and count it in the shear strength prediction for stud-connected steel–UHPC interfaces based on the compression-dispersion model and elastic foundation beam theory. The proposed formula is simple but with clear physical meaning, which has been verified with high accuracy. The proposed model can also be used to identify the yielding state of concrete in front of the stud and predict the interface friction during the whole static loading process, which improves the accuracy of shear strength prediction for steel–UHPC interfaces and reveals the influence of different parameters. For the steel–UHPC interface with UHPC strength greater than 120 MPa, the UHPC in front of stud is hard to yield and the percentage of friction force remains almost constant at 10%–14% during the whole static loading process. The positive effects of friction force on the shear strength of the steel–concrete interface is negligible for the cases with concrete strength less than 60 MPa.
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      A Novel Model for Shear Strength Prediction of a Steel–UHPC Composite Structure Considering Interface Friction

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4298198
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    contributor authorXuhui Zhang
    contributor authorLong Cheng
    contributor authorFu Xu
    contributor authorCaiqian Yang
    contributor authorLei Wang
    date accessioned2024-12-24T10:02:49Z
    date available2024-12-24T10:02:49Z
    date copyright8/1/2024 12:00:00 AM
    date issued2024
    identifier otherJSENDH.STENG-13164.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4298198
    description abstractExisting studies have shown that the interface friction force positively affects and improves the shear behavior at the stud-connected steel–ultrahigh performance concrete (UHPC) interface. However, the effects of the interface friction force have not been well understood and quantified yet. The present study proposes a novel model to quantify the interface friction force and count it in the shear strength prediction for stud-connected steel–UHPC interfaces based on the compression-dispersion model and elastic foundation beam theory. The proposed formula is simple but with clear physical meaning, which has been verified with high accuracy. The proposed model can also be used to identify the yielding state of concrete in front of the stud and predict the interface friction during the whole static loading process, which improves the accuracy of shear strength prediction for steel–UHPC interfaces and reveals the influence of different parameters. For the steel–UHPC interface with UHPC strength greater than 120 MPa, the UHPC in front of stud is hard to yield and the percentage of friction force remains almost constant at 10%–14% during the whole static loading process. The positive effects of friction force on the shear strength of the steel–concrete interface is negligible for the cases with concrete strength less than 60 MPa.
    publisherAmerican Society of Civil Engineers
    titleA Novel Model for Shear Strength Prediction of a Steel–UHPC Composite Structure Considering Interface Friction
    typeJournal Article
    journal volume150
    journal issue8
    journal titleJournal of Structural Engineering
    identifier doi10.1061/JSENDH.STENG-13164
    journal fristpage04024100-1
    journal lastpage04024100-14
    page14
    treeJournal of Structural Engineering:;2024:;Volume ( 150 ):;issue: 008
    contenttypeFulltext
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