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ZHENG Yi, LIU Ming, SHEN Xiao-jun, ZHANG Yan-nian. Calculating models of time-dependent reliability for existing reinforced concrete beam[J]. Journal of Traffic and Transportation Engineering, 2009, 9(2): 45-49. doi: 10.19818/j.cnki.1671-1637.2009.02.009
Citation: ZHENG Yi, LIU Ming, SHEN Xiao-jun, ZHANG Yan-nian. Calculating models of time-dependent reliability for existing reinforced concrete beam[J]. Journal of Traffic and Transportation Engineering, 2009, 9(2): 45-49. doi: 10.19818/j.cnki.1671-1637.2009.02.009
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Calculating models of time-dependent reliability for existing reinforced concrete beam

doi: 10.19818/j.cnki.1671-1637.2009.02.009
  • 1.

    Key Laboratory of Structural Engineering, Chongqing Jiaotong University, Chongqing 400074, China

  • 2.

    School of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, Liaoning, China

  • 3.

    State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China

  • 4.

    Center of Highway Engineering Test of Chongqing, Chongqing 400060, China

More Information
  • Author Bio:

    ZHENG Yi(1979-), male, doctoral student, +86-24-24691800, dandongzy@126.com

    LIU Ming(1962-), male, professor, +86-24-24691800, liumingsy@vip.sina.com

  • Received Date: 2008-11-18
  • Publish Date: 2009-04-25
    Abstract
  • The current theory of time-dependent reliability for existing structures and the calculating formula in current standard were analyzed. Considering the condition of material strength deterioration with time and the damages of concrete and steel, time-dependent strength calculating models were built for single-side reinforced concrete beam with rectangular section, double reinforced concrete beams with rectangular section and T-shape section. The time-dependent reliability index was put forward, and an engineering example was studied. Analysis result shows that the reliability index of existing reinforced concrete beam is 1.56, its bearing capacity belongs to grade d and is fit with current reliability appraisal standard, so the calculating models are correct and reasonable.

     

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