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Volume 39 Issue 10
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LIU Xin, GAN Liang-qin, SHENG Ke, HONG Bao-ning. Experimental study on service life of foamed mixture lightweight soil based on method of accelerated stress tests[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(10): 1793-1799. DOI: 10.11779/CJGE201710006
Citation: LIU Xin, GAN Liang-qin, SHENG Ke, HONG Bao-ning. Experimental study on service life of foamed mixture lightweight soil based on method of accelerated stress tests[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(10): 1793-1799. DOI: 10.11779/CJGE201710006
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Experimental study on service life of foamed mixture lightweight soil based on method of accelerated stress tests

  • 1. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098, China;
    2. Jiangsu Research Center for Geotechnical Engineering Technology, Hohai University, Nanjing 210098, China;
    3. Tunnel and Underground Engineering Institute, Hohai University, Nanjing 210098, China;
    4. Geotechnical Research Institute, Hohai University, Nanjing 210098, China

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  • Received Date: July 20, 2016
  • Published Date: October 24, 2017
    Graphical Abstract
    • Abstract
  • Based on the method of accelerated stress tests, the characteristics and distribution of fatigue life of foamed mixture lightweight soil (FMLS) which consists of cement, water and bubble are analyzed with the help of probability and statistics theory. The linear fatigue equation for FMLS is established based on a series of unbiased estimations. At the same time, the service life of FMLS under normal traffic load is predicted. The research results indicate that the fatigue life of FMLS under identical traffic load is considered to have small discreteness according to the three indices of average value, standard deviation and variable coefficient, but the discrete degree increases with the increase of the accelerated stress. The results of linear regression indicate that the fatigue life of FMLS obeys the lognormal distribution. The fatigue life equation for FMLS is established, and the logarithm of fatigue life of FMLS proves to decrease with the increase of the accelerated stress according to the fatigue equation. Finally, the average service life of FMLS under normal traffic load is predicted to be about 73 years.
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    • References (15)
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