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Geomechanics and Engineering Volume 19, Number 2, October10 2019 , pages 141-151 DOI: https://doi.org/10.12989/gae.2019.19.2.141 |
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Created cavity expansion solution in anisotropic and drained condition based on Cam-Clay model |
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Chao Li and Jin-Feng Zou
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| Abstract | ||
| A novel theoretical solution is presented for created (zero initial radius) cavity expansion problem based on Cam-Clay 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. | ||
| Key Words | ||
| theoretical solution; created cavity expansion problem; cam-clay model; initial anisotropic in-situ stress; drained condition; large deformation | ||
| Address | ||
| Chao Li and Jin-Feng Zou: School of Civil Engineering, Central South University, Hunan 410075, China | ||