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CHEN Tuan-jie, HUANG Wei, WANG Shuang-jie. Numerical analysis of fatigue crack propagation in asphalt pavement on steel deck[J]. Journal of Traffic and Transportation Engineering, 2008, 8(4): 52-57.
Citation: CHEN Tuan-jie, HUANG Wei, WANG Shuang-jie. Numerical analysis of fatigue crack propagation in asphalt pavement on steel deck[J]. Journal of Traffic and Transportation Engineering, 2008, 8(4): 52-57.
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Numerical analysis of fatigue crack propagation in asphalt pavement on steel deck

  • 1.

    The First Highway Survey and Design Institute of China, Xi'an 710075, Shaanxi, China

  • 2.

    ITS Research Center, Southeast University, Nanjing 210096, Jiangsu, China

  • 3.

    School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China

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  • Author Bio:

    CHEN Tuan-jie(1975-), male, engineer, PhD, +86-29-88322888, demo555@126.com

  • Received Date: 2008-01-02
  • Publish Date: 2008-08-25
    Abstract
  • In order to discover the crack mechanism of asphalt pavement on steel deck, the resistance curve of fatigue crack propagation was simulated, the whole process of crack beginning, propagation and instability was analyzed based on 3D finite element method and experiment data.Analysis result shows that the form of resistance curve depends on the type of material and the composite beam of pavement and steel plate.When the natural crack length is 0, the propagation of fatigue crack has 3 phases such as initial propagation zone, stable propagation zone and unstable propagation zone, and the total fatigue life almost reaches 8 million times; when the natural crack length is 10 mm, the propagation of fatigue crack in asphalt pavement may start from unstable propagation zone, the total fatigue life may be 2 million times; there is a good nonlinear relationship between crack increment ratio and loading times.So for steel deck pavement, the materials with little porosity and good dense degree should be selected, and fatigue crack propagation phase can be judged by loading times.

     

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