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    Size Effect on Shear Strength of Deep Beams: Investigating with Strut-and-Tie Model

    Source: Journal of Structural Engineering:;2006:;Volume ( 132 ):;issue: 005
    Author:
    K. H. Tan
    ,
    G. H. Cheng
    DOI: 10.1061/(ASCE)0733-9445(2006)132:5(673)
    Publisher: American Society of Civil Engineers
    Abstract: Since a diagonally cracked deep beam behaves as a tied arch, the conventional plane section remaining plane approach is not applicable to analyses of deep beams. Besides, for beams without web reinforcement, it has been shown that shear strength decreases as member size increases. This is associated with a phenomenon called size effect. In this study, the causes of size effect on shear strength of deep beams are investigated using both the strut-and-tie model (STM) and finite element model. The study shows that size effect in concrete beam arises primarily from an inappropriate adoption of the shear transfer concept for steel beams. In addition, size effect also depends on secondary factors such as the geometry of strut, and the spacing and diameter of web reinforcement. The modified STM is verified with three published case studies comprising a total of 36 beams. Generally, the predictions are accurate and consistent, with a uniform safety margin for different member sizes considered.
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      Size Effect on Shear Strength of Deep Beams: Investigating with Strut-and-Tie Model

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    http://yetl.yabesh.ir/yetl1/handle/yetl/34785
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    contributor authorK. H. Tan
    contributor authorG. H. Cheng
    date accessioned2017-05-08T20:59:49Z
    date available2017-05-08T20:59:49Z
    date copyrightMay 2006
    date issued2006
    identifier other%28asce%290733-9445%282006%29132%3A5%28673%29.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/34785
    description abstractSince a diagonally cracked deep beam behaves as a tied arch, the conventional plane section remaining plane approach is not applicable to analyses of deep beams. Besides, for beams without web reinforcement, it has been shown that shear strength decreases as member size increases. This is associated with a phenomenon called size effect. In this study, the causes of size effect on shear strength of deep beams are investigated using both the strut-and-tie model (STM) and finite element model. The study shows that size effect in concrete beam arises primarily from an inappropriate adoption of the shear transfer concept for steel beams. In addition, size effect also depends on secondary factors such as the geometry of strut, and the spacing and diameter of web reinforcement. The modified STM is verified with three published case studies comprising a total of 36 beams. Generally, the predictions are accurate and consistent, with a uniform safety margin for different member sizes considered.
    publisherAmerican Society of Civil Engineers
    titleSize Effect on Shear Strength of Deep Beams: Investigating with Strut-and-Tie Model
    typeJournal Paper
    journal volume132
    journal issue5
    journal titleJournal of Structural Engineering
    identifier doi10.1061/(ASCE)0733-9445(2006)132:5(673)
    treeJournal of Structural Engineering:;2006:;Volume ( 132 ):;issue: 005
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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