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    Composite-Wedge Anchorage for Fiber-Reinforced Polymer Tendons

    Source: Journal of Composites for Construction:;2022:;Volume ( 026 ):;issue: 002::page 04022005
    Author:
    Jianzhe Shi
    ,
    Xin Wang
    ,
    Lei Zhang
    ,
    Zhishen Wu
    ,
    Zhongguo Zhu
    DOI: 10.1061/(ASCE)CC.1943-5614.0001194
    Publisher: ASCE
    Abstract: A novel composite-wedge anchorage is proposed here for prestressing fiber-reinforced polymer (FRP) tendons. The composite wedge was designed and optimized in terms of the length and elastic modulus of the wedge segments via finite-element analysis. The manufacturing technologies for the composite wedge involving a molding process, are presented in detail. Static, creep, and fatigue tests on basalt FRP (BFRP) tendons with the proposed anchorages were conducted. The tensile capacity, long-term deformation, and fatigue life of the tendon–anchor assemblies were analyzed. The experimental results show that the proposed anchorage exhibits an anchor efficiency factor of up to 91%; the corresponding value for a conventional steel–wedge anchorage is only 80%. The tendon–anchor assembly displays a creep behavior similar to that of BFRP tendons. Furthermore, the system survives 200 million cycles of fatigue load at a maximum fatigue load of 0.5 Fu (Fu is the tensile capacity of the tendon–anchor assembly) and a load range of 0.05 Fu. Wedge–sleeve and tendon–wedge sliding under a sustained load or cyclic load cannot cause considerable prestress loss in practical engineering. The results validate the effectiveness of the proposed anchorage under service loads and demonstrate the application prospects of this anchorage.
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      Composite-Wedge Anchorage for Fiber-Reinforced Polymer Tendons

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4282921
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    contributor authorJianzhe Shi
    contributor authorXin Wang
    contributor authorLei Zhang
    contributor authorZhishen Wu
    contributor authorZhongguo Zhu
    date accessioned2022-05-07T20:47:55Z
    date available2022-05-07T20:47:55Z
    date issued2022-4-1
    identifier other(ASCE)CC.1943-5614.0001194.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4282921
    description abstractA novel composite-wedge anchorage is proposed here for prestressing fiber-reinforced polymer (FRP) tendons. The composite wedge was designed and optimized in terms of the length and elastic modulus of the wedge segments via finite-element analysis. The manufacturing technologies for the composite wedge involving a molding process, are presented in detail. Static, creep, and fatigue tests on basalt FRP (BFRP) tendons with the proposed anchorages were conducted. The tensile capacity, long-term deformation, and fatigue life of the tendon–anchor assemblies were analyzed. The experimental results show that the proposed anchorage exhibits an anchor efficiency factor of up to 91%; the corresponding value for a conventional steel–wedge anchorage is only 80%. The tendon–anchor assembly displays a creep behavior similar to that of BFRP tendons. Furthermore, the system survives 200 million cycles of fatigue load at a maximum fatigue load of 0.5 Fu (Fu is the tensile capacity of the tendon–anchor assembly) and a load range of 0.05 Fu. Wedge–sleeve and tendon–wedge sliding under a sustained load or cyclic load cannot cause considerable prestress loss in practical engineering. The results validate the effectiveness of the proposed anchorage under service loads and demonstrate the application prospects of this anchorage.
    publisherASCE
    titleComposite-Wedge Anchorage for Fiber-Reinforced Polymer Tendons
    typeJournal Paper
    journal volume26
    journal issue2
    journal titleJournal of Composites for Construction
    identifier doi10.1061/(ASCE)CC.1943-5614.0001194
    journal fristpage04022005
    journal lastpage04022005-11
    page11
    treeJournal of Composites for Construction:;2022:;Volume ( 026 ):;issue: 002
    contenttypeFulltext
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