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A semi-analytical solution for consolidation around a spherical cavity in an elasto-plastic medium and its potential application for tunneling

Lookup NU author(s): Dr Mohamed Rouainia

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Abstract

An analytical solution for consolidation around spherical cavity contraction is developed. This solution has the potential to evaluate consolidation around tunnel heads. The initial excess pore water pressure immediately after the creation of the cavity is estimated from the cavity expansion/contraction theory using a linear-elastic-perfectly-plastic soil model. Expressions for the decay of pore water pressure with time are obtained using elasticity. Curves showing the variation of pore water pressure with time are plotted in nondimensional form. Comparison with two-dimensional coupled stress-pore pressure finite element analysis shows that the proposed semi-analytical solution can successfully predict the poro-elasto-plastic behavior around spherical cavity.

Publication metadata

Author(s): Osman AS, Rouainia M

Publication type: Article

Publication status: Published

Journal: International Journal of Computational Methods

Year: 2014

Volume: 11

Issue: 2

Print publication date: 06/01/2014

ISSN (print): 0219-8762

ISSN (electronic): 1793-6969

Publisher: World Scientific Publishing Co. Pte. Ltd.

URL: http://dx.doi.org/10.1142/S0219876213420103

DOI: 10.1142/S0219876213420103

Notes: ARTN 1342010

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