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ZHAO Yan-qing, WANG Zhi-chao, WANG Guo-zhong, TAN Yi-qiu. Stress pulse durations in asphalt pavement under moving load[J]. Journal of Traffic and Transportation Engineering, 2009, 9(6): 11-15. doi: 10.19818/j.cnki.1671-1637.2009.06.003
Citation: ZHAO Yan-qing, WANG Zhi-chao, WANG Guo-zhong, TAN Yi-qiu. Stress pulse durations in asphalt pavement under moving load[J]. Journal of Traffic and Transportation Engineering, 2009, 9(6): 11-15. doi: 10.19818/j.cnki.1671-1637.2009.06.003
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Stress pulse durations in asphalt pavement under moving load

doi: 10.19818/j.cnki.1671-1637.2009.06.003
  • 1.

    School of Transportation Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China

  • 2.

    School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China

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  • Author Bio:

    ZHAO Yan-qing(1972-)‚male‚associate professor‚PhD, +86-29-411-84707761, Yanqing_zhao888@126.com

  • Received Date: 2009-06-25
  • Publish Date: 2009-12-25
    Abstract
  • The stress pulse durations of various depths in asphalt pavement at different temperatures and vehicle speeds were evaluated by using viscoelastic 3D finite element method(FEM)and simulating the traffic with moving loads which vary with time and space.The results were compared with those obtained by using Odemark method.The durations obtained from both FEM and Odemark method were used to predict the dynamic moduli of asphalt mixtures.The result shows that there clearly exists a nonlinear relationship between the stress pulse duration and the depth.The effect of temperature and speed on the duration is small on pavement surface, while it becomes significant at deeper locations.The maximal relative error of the predicted dynamic moduli is 16.1%.The study indicates that viscoelastic FEM can avoid the errors resulted from the empirical relationships and assumptions adopted in Odemark method, and thus can better represents the real behavior of asphalt pavement.

     

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    • References(10)
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