Anisotropic elasto-plastic solutions for cavity expansion problem in saturated soil mass |
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Affiliation: | School of Civil Engineering, Central South University, Hunan 410075, China |
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Abstract: | On the basis of the yield criterion of Matsuoka and Nakai (1974), novel elasto-plastic solutions are obtained for the cavity expansion problem in an anisotropic medium. The solutions are formulated by employing a small-strain analysis in an elastic zone and a large-strain analysis in a plastic zone around the cavity in a soil mass. In light of the initial condition, the plastic radius and the stress in the plastic zone are derived by incorporating the large-strain analysis, the influence of stress anisotropy (K0) and the non-associated flow rule, and two fundamental solutions for the cavity expansion problem under undrained and drained conditions are presented in an anisotropic soil mass. Finally, a comparison with the previous results is performed for verification. |
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Keywords: | Elasto-plastic solution Cavity expansion problem Large strain analysis Stress anisotropy Non-associated flow rule Undrained and drained conditions |
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