Elastoplastic Solution for Spherical Cavity Expansion in Modified Cam-Clay Soil under Drained Condition
Publication: International Journal of Geomechanics
Volume 17, Issue 8
Abstract
This paper presents an innovative semianalytical solution for the expansion of a drained spherical cavity with finite initial radius. The widely known modified Cam-clay model is adopted to capture the nonlinear elastoplastic behavior of soil. The rigorous definitions for the mean and deviator stresses are adopted. The problem is then formulated as a set of first-order ordinary differential equations in the Lagrangian form. The radial and tangential stress and specific volume distribution around the cavity are determined. Extensive parametric study is undertaken to investigate effects of the overconsolidation ratio and relative positioning of elastoplastic interface, among others. The applicability of the proposed theoretical approach is demonstrated by a comparison with laboratory test results.
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Acknowledgments
This work is supported by the National Natural Science Foundation of China (Project 51208301) and the Funding Scheme for Training Young Teachers for Universities in Shanghai (Project slg12019). The authors wish to express their gratitude for this financial support.
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Published In
International Journal of Geomechanics
Volume 17 • Issue 8 • August 2017
Copyright
© 2017 American Society of Civil Engineers.
History
Received: Aug 17, 2015
Accepted: Feb 1, 2017
Published online: Mar 28, 2017
Published in print: Aug 1, 2017
Discussion open until: Aug 28, 2017
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