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    Additional Shear Stresses in Webs of Segmental Concrete Bridges due to Anchorage of Cantilever Tendons

    Source: Journal of Bridge Engineering:;2021:;Volume ( 026 ):;issue: 007::page 04021041-1
    Author:
    Zhi-Qi He
    ,
    Minghao Tang
    ,
    Tian Xu
    ,
    Zhao Liu
    ,
    Zhongguo John Ma
    DOI: 10.1061/(ASCE)BE.1943-5592.0001750
    Publisher: ASCE
    Abstract: The balanced cantilever method is the most widely used technique for the construction of large-span segmental prestressed concrete box-girder bridges. In order to control shear cracks at the service limit state, the principal tensile stresses in the webs are analyzed for all segmental bridges. Web shear cracking may occur for a number of reasons, one of them is the ignoring of shear stresses induced by the anchorage of cantilever tendons during the cantilevering process. This study aims to provide a clear understanding of anchorage-induced shear stresses in the webs of segmental box-girder bridges, including the underlying mechanisms, mechanical models, adverse effects, and design considerations. Case studies show that the peak shear stresses in the webs might have a significant increase due to this localized effect, while it cannot be captured by the beam-element analysis and is usually not considered in the routine design. To solve this problem, a practical approach is developed for evaluating the anchorage-induced shear stresses in the webs of segmental concrete box-girder bridges.
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      Additional Shear Stresses in Webs of Segmental Concrete Bridges due to Anchorage of Cantilever Tendons

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4270646
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    • Journal of Bridge Engineering

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    contributor authorZhi-Qi He
    contributor authorMinghao Tang
    contributor authorTian Xu
    contributor authorZhao Liu
    contributor authorZhongguo John Ma
    date accessioned2022-01-31T23:57:41Z
    date available2022-01-31T23:57:41Z
    date issued7/1/2021
    identifier other%28ASCE%29BE.1943-5592.0001750.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4270646
    description abstractThe balanced cantilever method is the most widely used technique for the construction of large-span segmental prestressed concrete box-girder bridges. In order to control shear cracks at the service limit state, the principal tensile stresses in the webs are analyzed for all segmental bridges. Web shear cracking may occur for a number of reasons, one of them is the ignoring of shear stresses induced by the anchorage of cantilever tendons during the cantilevering process. This study aims to provide a clear understanding of anchorage-induced shear stresses in the webs of segmental box-girder bridges, including the underlying mechanisms, mechanical models, adverse effects, and design considerations. Case studies show that the peak shear stresses in the webs might have a significant increase due to this localized effect, while it cannot be captured by the beam-element analysis and is usually not considered in the routine design. To solve this problem, a practical approach is developed for evaluating the anchorage-induced shear stresses in the webs of segmental concrete box-girder bridges.
    publisherASCE
    titleAdditional Shear Stresses in Webs of Segmental Concrete Bridges due to Anchorage of Cantilever Tendons
    typeJournal Paper
    journal volume26
    journal issue7
    journal titleJournal of Bridge Engineering
    identifier doi10.1061/(ASCE)BE.1943-5592.0001750
    journal fristpage04021041-1
    journal lastpage04021041-13
    page13
    treeJournal of Bridge Engineering:;2021:;Volume ( 026 ):;issue: 007
    contenttypeFulltext
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