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    Long-Term Behavior of Timber–Concrete Composite Beams. I: Finite Element Modeling and Validation

    Source: Journal of Structural Engineering:;2006:;Volume ( 132 ):;issue: 001
    Author:
    Massimo Fragiacomo
    ,
    Ario Ceccotti
    DOI: 10.1061/(ASCE)0733-9445(2006)132:1(13)
    Publisher: American Society of Civil Engineers
    Abstract: This first part of two companion papers deals with the numerical modeling of timber–concrete composite beams (TCCs) under long-term loading. All phenomena affecting the long-term behavior of timber, concrete, and the connection system, such as creep, mechanosorptive creep, shrinkage/swelling, and temperature variations, are fully considered. The structural problem is solved through a uniaxial finite element model with flexible connection and a step-by-step numerical procedure over time. The important role played by the environmental thermohygrometric variations on TCCs is highlighted through some analyses. The proposed numerical procedure is validated on two long-term experimental tests in outdoor conditions. Despite some uncertainties in environmental conditions and material properties, a good fit between experimental and numerical results is obtained. A parametric analysis is performed in the second part, showing the contribution of different rheological phenomena and thermohygrometric variations on beam deflection and connection slip. Based on results carried out, a simplified approach for long-term evaluation of TCCs is then proposed.
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      Long-Term Behavior of Timber–Concrete Composite Beams. I: Finite Element Modeling and Validation

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    http://yetl.yabesh.ir/yetl1/handle/yetl/34640
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    contributor authorMassimo Fragiacomo
    contributor authorArio Ceccotti
    date accessioned2017-05-08T20:59:35Z
    date available2017-05-08T20:59:35Z
    date copyrightJanuary 2006
    date issued2006
    identifier other%28asce%290733-9445%282006%29132%3A1%2813%29.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/34640
    description abstractThis first part of two companion papers deals with the numerical modeling of timber–concrete composite beams (TCCs) under long-term loading. All phenomena affecting the long-term behavior of timber, concrete, and the connection system, such as creep, mechanosorptive creep, shrinkage/swelling, and temperature variations, are fully considered. The structural problem is solved through a uniaxial finite element model with flexible connection and a step-by-step numerical procedure over time. The important role played by the environmental thermohygrometric variations on TCCs is highlighted through some analyses. The proposed numerical procedure is validated on two long-term experimental tests in outdoor conditions. Despite some uncertainties in environmental conditions and material properties, a good fit between experimental and numerical results is obtained. A parametric analysis is performed in the second part, showing the contribution of different rheological phenomena and thermohygrometric variations on beam deflection and connection slip. Based on results carried out, a simplified approach for long-term evaluation of TCCs is then proposed.
    publisherAmerican Society of Civil Engineers
    titleLong-Term Behavior of Timber–Concrete Composite Beams. I: Finite Element Modeling and Validation
    typeJournal Paper
    journal volume132
    journal issue1
    journal titleJournal of Structural Engineering
    identifier doi10.1061/(ASCE)0733-9445(2006)132:1(13)
    treeJournal of Structural Engineering:;2006:;Volume ( 132 ):;issue: 001
    contenttypeFulltext
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