• ISSN 0258-2724
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Volume 27 Issue 3
May  2014
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Article Contents
Journal of Southwest Jiaotong University  > 2014  >  27(3): 412-418.
LIU Junzhong, WENG Xingzhong, ZHANG Jun, LI Xianpeng, JI Dongming, GUO Lei. Model Experiment of Fatigue Deformation Characteristic of Emergency Soil Airfield Pavement[J]. Journal of Southwest Jiaotong University, 2014, 27(3): 412-418. doi: 10.3969/j.issn.0258-2724.2014.03.007
Citation: LIU Junzhong, WENG Xingzhong, ZHANG Jun, LI Xianpeng, JI Dongming, GUO Lei. Model Experiment of Fatigue Deformation Characteristic of Emergency Soil Airfield Pavement[J]. Journal of Southwest Jiaotong University, 2014, 27(3): 412-418. doi: 10.3969/j.issn.0258-2724.2014.03.007
shu

Model Experiment of Fatigue Deformation Characteristic of Emergency Soil Airfield Pavement

doi: 10.3969/j.issn.0258-2724.2014.03.007
  • Received Date: 05 Jun 2013
  • Publish Date: 25 Jun 2014
    Abstract
  • To investigate the reasonable pavement structure for rapid construction of emergency airfield, fatigue deformation characteristics of soil airfield pavement were researched respectively by manual loading method and electro-hydraulic servo fatigue testing machine. Through a full-scale model test, the variations of cumulative plastic deformation, rebound deflection and deflection basin curve with load, loading frequency and loading times were discussed. The test results show that cumulative plastic deformation increases with loading frequency, and there exists a logarithmic relationship between it and loading times, the deflection basin curve has approximately an S-style curve and can be fitted well by a quartic polynomial equation. The carrying capacity of pavement structure increases fast at an early stage, holistic elastic modulus runs up to from 200 to 500 MPa in 7 to 60 d, the rebound deflections are less than 1 mm under ten thousands traffic times. The fatigue deformation characteristics of the recommended airfield pavement structure composed of compacted subsoil, cement stabilized soil base (or subbase) and functional surface course, can meet the requirements of emergency airfield.

     

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