Geomechanics and Engineering

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Created cavity expansion solution in anisotropic and drained condition based on Cam-Clay model

  • Li, Chao (School of Civil Engineering, Central South University) ;
  • Zoua, Jin-Feng (School of Civil Engineering, Central South University)
  • Received : 2019.02.13
  • Accepted : 2019.09.26
  • Published : 2019.10.10
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Abstract

A novel theoretical solution is presented for created (zero initial radius) cavity expansion problem based on CamClay model and considers the effect of initial anisotropic in-situ stress and drained conditions. Here the strain of this theoretical solution is small deformation in elastic region and large deformation in plastic region. The works for cylindrical and spherical cavities expanding in drained condition from zero initial radius are investigated. Most of the conventional solutions were based on the isotropic and undrained condition, however, the initial stress state of natural soil mass is anisotropy by soil deposition history, and drained cavity expansion calculation is closer to actual engineering in permeable soil mass. Finally, the parametric study is presented in order to the engineering significance of this work.

Keywords

Acknowledgement

Supported by : National Key R&D Program of China

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