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    Analytical Model for FRP-and-Steel-Confined Circular Concrete Columns in Compression

    Source: Journal of Composites for Construction:;2014:;Volume ( 018 ):;issue: 003
    Author:
    Hao Hu
    ,
    Rudolf Seracino
    DOI: 10.1061/(ASCE)CC.1943-5614.0000394
    Publisher: American Society of Civil Engineers
    Abstract: Providing additional confinement by external fiber-reinforced polymer (FRP) wrapping is one of the most common and effective techniques for the retrofit of existing reinforced concrete columns. Over the past 2 decades, researchers have made much progress on the development of constitutive models to describe the behavior of FRP-confined circular concrete sections in compression. However, only recently have a few models been published representing the first attempts to develop a constitutive model for circular concrete columns in compression confined by both external FRP wraps and internal transverse steel. A critical review and evaluation of existing FRP-and-steel-confined concrete constitutive models highlights the need for a more robust model. This paper presents the development of a new FRP-and-steel-confined concrete in compression constitutive model for circular sections based on the passive-confinement approach. A new lateral-to-axial strain relationship and failure surface function are developed. Through a comparison with published experimental data, the accuracy of the proposed model is demonstrated.
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      Analytical Model for FRP-and-Steel-Confined Circular Concrete Columns in Compression

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    http://yetl.yabesh.ir/yetl1/handle/yetl/57538
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    contributor authorHao Hu
    contributor authorRudolf Seracino
    date accessioned2017-05-08T21:36:52Z
    date available2017-05-08T21:36:52Z
    date copyrightJune 2014
    date issued2014
    identifier other%28asce%29cc%2E1943-5614%2E0000397.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/57538
    description abstractProviding additional confinement by external fiber-reinforced polymer (FRP) wrapping is one of the most common and effective techniques for the retrofit of existing reinforced concrete columns. Over the past 2 decades, researchers have made much progress on the development of constitutive models to describe the behavior of FRP-confined circular concrete sections in compression. However, only recently have a few models been published representing the first attempts to develop a constitutive model for circular concrete columns in compression confined by both external FRP wraps and internal transverse steel. A critical review and evaluation of existing FRP-and-steel-confined concrete constitutive models highlights the need for a more robust model. This paper presents the development of a new FRP-and-steel-confined concrete in compression constitutive model for circular sections based on the passive-confinement approach. A new lateral-to-axial strain relationship and failure surface function are developed. Through a comparison with published experimental data, the accuracy of the proposed model is demonstrated.
    publisherAmerican Society of Civil Engineers
    titleAnalytical Model for FRP-and-Steel-Confined Circular Concrete Columns in Compression
    typeJournal Paper
    journal volume18
    journal issue3
    journal titleJournal of Composites for Construction
    identifier doi10.1061/(ASCE)CC.1943-5614.0000394
    treeJournal of Composites for Construction:;2014:;Volume ( 018 ):;issue: 003
    contenttypeFulltext
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