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    Shear friction strength of monolithic concrete interfaces

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    Ashour_et_al_MCR_Final.pdf (661.6Kb)
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    Publication date
    2017-03
    Author
    Kwon, S-J.
    Yang, Keun-Hyeok
    Hwang, Y-H.
    Ashour, Ashraf F.
    Keyword
    Monolithic interfaces; Shear friction strength; Mechanism analysis; Axial stress; Joint; Shear; Structural design
    Rights
    © 2016 ICE Publishing. Reproduced in accordance with the publisher's self-archiving policy.
    Peer-Reviewed
    Yes
    
    Metadata
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    Abstract
    This paper presents an integrated model for shear friction strength of monolithic concrete interfaces derived from the upper-bound theorem of concrete plasticity. The model accounts for the effects of applied axial stresses and transverse reinforcement on the shear friction action at interfacial shear cracks. Simple equations were also developed to generalize the effectiveness factor for compression, ratio of effective tensile to compressive strengths and angle of concrete friction. The reliability of the proposed model was then verified through comparisons with previous empirical equations and 103 push-off test specimens compiled from different sources in the literature. The previous equations considerably underestimate the concrete shear transfer capacity and the underestimation is notable for the interfaces subjected to additional axial stresses. The proposed model provides superior accuracy in predicting the shear friction strength, resulting in a mean between experimental and predicted friction strengths of 0.97 and least scatter. Moreover, the proposed model has consistent trends with test results in evaluating the effect of various parameters on the shear friction strength.
    URI
    http://hdl.handle.net/10454/8527
    Citation
    Kwon S-J, Yang K-H, Hwang Y-A and Ashour AF (2016) Shear friction strength of monolithic concrete interfaces. Magazine of Concrete Research. 69(5): 230-244.
    Link to publisher’s version
    http://dx.doi.org/10.1680/jmacr.16.00190
    Type
    Article
    Collections
    Engineering and Informatics Publications

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