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    Coupled Effect of Loading and Environment of Concrete Bridge in Service Life

    Source: Journal of Highway and Transportation Research and Development (English Edition):;2014:;Volume ( 008 ):;issue: 003
    Author:
    Tang Guo-bin
    ,
    Wei Jing-chun
    ,
    Wang Tong-ning
    DOI: 10.1061/JHTRCQ.0000398
    Publisher: American Society of Civil Engineers
    Abstract: A numerical method is proposed to study load and the environment couple effect during the service of a concrete bridge. By studying the corrosion process of reinforcement bars, the strain of the bars is decomposed into two parts, elastic strain and corrosion strain, and their ratio is defined as the corrosion factor. The time-dependent constitution of corrosion of the steel bar is obtained by introducing a nominal elastic module. According to the virtual work principle, the finite element formulation of the reinforcement concrete element is derived, and the computation sequence determined using the time history method is illustrated. The nonlinear finite element program is realized by the Fortran program to numerically solve the problem, which is verified by testing a model of three reinforced concrete beams. The results show that both stiffness matrix and the additional nodal load of the reinforcement concrete element should be considered in the couple effect analysis. The proposed method can be used to predict long-term mechanical properties of concrete bridges.
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      Coupled Effect of Loading and Environment of Concrete Bridge in Service Life

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    http://yetl.yabesh.ir/yetl1/handle/yetl/82737
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    • Journal of Highway and Transportation Research and Development (English Edition)

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    contributor authorTang Guo-bin
    contributor authorWei Jing-chun
    contributor authorWang Tong-ning
    date accessioned2017-05-08T22:33:58Z
    date available2017-05-08T22:33:58Z
    date copyrightSeptember 2014
    date issued2014
    identifier other49767490.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/82737
    description abstractA numerical method is proposed to study load and the environment couple effect during the service of a concrete bridge. By studying the corrosion process of reinforcement bars, the strain of the bars is decomposed into two parts, elastic strain and corrosion strain, and their ratio is defined as the corrosion factor. The time-dependent constitution of corrosion of the steel bar is obtained by introducing a nominal elastic module. According to the virtual work principle, the finite element formulation of the reinforcement concrete element is derived, and the computation sequence determined using the time history method is illustrated. The nonlinear finite element program is realized by the Fortran program to numerically solve the problem, which is verified by testing a model of three reinforced concrete beams. The results show that both stiffness matrix and the additional nodal load of the reinforcement concrete element should be considered in the couple effect analysis. The proposed method can be used to predict long-term mechanical properties of concrete bridges.
    publisherAmerican Society of Civil Engineers
    titleCoupled Effect of Loading and Environment of Concrete Bridge in Service Life
    typeJournal Paper
    journal volume8
    journal issue3
    journal titleJournal of Highway and Transportation Research and Development (English Edition)
    identifier doi10.1061/JHTRCQ.0000398
    treeJournal of Highway and Transportation Research and Development (English Edition):;2014:;Volume ( 008 ):;issue: 003
    contenttypeFulltext
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