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Volume 39 Issue 10
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BIAN Shi-hai, LI Guo-ying, WEI Kuang-min, ZHOU Jian. Modified generalized plasticity model for rockfill materials[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(10): 1936-1942. DOI: 10.11779/CJGE201710024
Citation: BIAN Shi-hai, LI Guo-ying, WEI Kuang-min, ZHOU Jian. Modified generalized plasticity model for rockfill materials[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(10): 1936-1942. DOI: 10.11779/CJGE201710024
shu

Modified generalized plasticity model for rockfill materials

  • 1. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China;
    2. Geotechnical Engineering Department, Nanjing Hydraulic Research Institute, Nanjing 210024, China;
    3. Key Laboratory of Earth-Rock Dam Failure Mechanism and Safety Control Techniques, Ministry of Water Resources, Nanjing 210024, China

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  • Received Date: December 11, 2016
  • Published Date: October 24, 2017
    Graphical Abstract
    • Abstract
  • Within the framework of generalized plasticity theory, the plastic modulus is modified by adding two correction factors to enhance the adaptability of model under high confining stress, thus the generalized plasticity model for sand is successfully transformed into the model for rockfill materials. The modified P-Z model has fewer parameters, all of which can be easily determined, and it is relatively practical and can be extended into a state-dependent constitutive model. The expression for plastic modulus is simple and can be degenerated to that for isotropic compression tests. The modified model can well simulate the stress-strain behaviours of rockfill materials of triaxial tests and can aslo capture the stress-strain features under other stress paths.
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    • References (26)
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