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Peng You-song, Qiang Shi-zhong. 3-D thermal stress computation method of highway concrete box-girder[J]. Journal of Traffic and Transportation Engineering, 2007, 7(1): 63-67.
Citation: Peng You-song, Qiang Shi-zhong. 3-D thermal stress computation method of highway concrete box-girder[J]. Journal of Traffic and Transportation Engineering, 2007, 7(1): 63-67.
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3-D thermal stress computation method of highway concrete box-girder

  • School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China

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  • Author Bio:

    Peng You-song(1965-), male, doctoral student, +86-28-87634830, pysong@mail.sc.cninfo.net

    Qiang Shi-zhong(1941-), male, professor, +86-28-87634830, qiangshizhong@163.com

  • Received Date: 2006-10-11
  • Publish Date: 2007-02-25
    Abstract
  • In order to improve the computation precision of 3-D thermal stress of concrete box-girder, the coupling relationship among thermal stress components caused by the effect of Poisson's ratio was taken into account, a computation method of thermal stress was proposed based on the theory of thermoelasticity, an integral property of thermal stress was deduced and used to effectively simplify the computation formulation of thermal stress, thermal stress was analyzed by simple structural analysis method, its practical computation formulas were derived. The results calculated by the method and formulas agree with those calculated by 3-D FEM, while the computation errors of conventional methods are more than 25%, which indicates the method and formulas are feasible.

     

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