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Volume 36 Issue 10
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JIN Xin-xin, DU Li-hui, WANG Xiao-yue. Nonlinear four-parameter K-G model for rockfills[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(10): 1947-1952. DOI: 10.11779/CJGE201410024
Citation: JIN Xin-xin, DU Li-hui, WANG Xiao-yue. Nonlinear four-parameter K-G model for rockfills[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(10): 1947-1952. DOI: 10.11779/CJGE201410024
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Nonlinear four-parameter K-G model for rockfills

  • The State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China

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  • Received Date: December 16, 2013
  • Published Date: October 19, 2014
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    • Abstract
  • The researches on constitutive relationship for rockfills are significant because of its wide application. Based on the theory of thermodynamics, a four-parameter K-G model is derived from the Gibbs free energy function. The model is theoretically rigorous and can reflect the nonlinearity, pressure rigidity, partly anisotropy and other engineering properties. Most importantly, only four parameters which are independent of each other are needed in this model. The iso-stress ratio tests and numerical simulations of two-dimensional CFRD validate the reasonability of the model. Furthermore, three-dimensional static calculation of Shuibuya CFRD is performed. The results show that the vertical displacement is 2.02 m, which is closer to the measured value than that of other nonlinear models. Therefore, the four-parameter K-G model can be used to calculate the stress and deformation of CFRDs.
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    • References (15)
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