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Volume 38 Issue 9
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CAI Xin, YANG Jie, GUO Xing-wen, WU Ying-li. Elastoplastic constitutive model for cement-sand-gravel material[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(9): 1569-1577. DOI: 10.11779/CJGE201609003
Citation: CAI Xin, YANG Jie, GUO Xing-wen, WU Ying-li. Elastoplastic constitutive model for cement-sand-gravel material[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(9): 1569-1577. DOI: 10.11779/CJGE201609003
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Elastoplastic constitutive model for cement-sand-gravel material

  • 1. College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China;
    2. College of Mechanics and Materials, Hohai University, Nanjing 210098, China;
    3. Key Laboratory of Failure Mechanism and Safety Control Techniques of Earth-Rock Dam of the Ministry of Water Resources, Nanjing 210029, China;
    4. Geotechnical Engineering Department, Nanjing Hydraulic Research Institute, Nanjing 210024, China

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  • Received Date: June 09, 2015
  • Published Date: September 24, 2016
    Graphical Abstract
    • Abstract
  • In order to establish an elastoplastic constitutive model for cement-sand-gravel (CSG) material, firstly some samples with cement content of 60 kg/m3 are prepared for the consolidated drained triaxial tests under constant confining pressure, isotropic loading-unloading-reloading tests and loading-unloading-reloading triaxial tests (under consolidated drained condition). The test results depict the stress-strain curves under various confining pressures. Based on the test results and some related researches on CSG material by some experts, the elastic part of the model is put forward, the shear and volume yield surface model is proposed, and by introducing the generalized plasticity theory, an appropriate elastoplastic constitutive model for CSG material is established. The calculated results by the model including 9 parameters are compared with the experimental data of the consolidated drained triaxial tests. It is shown that the proposed model accurately depicts the relationship between stress and strain for CSG material.
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    • References (17)
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