Large Deformation Numerical Analysis of Displacement-Controlled Cylindrical Cavity Expansion under Anisotropic Initial Stress
Publication: International Journal of Geomechanics
Volume 20, Issue 9
Abstract
This paper proposes an empirical solution to calculate the average ultimate cavity wall pressure (UCWP) of cavity expansion in undrained clay under anisotropic stress through large deformation finite element analysis using a coupled Eulerian–Lagrangian technique. The soil around the cylindrical cavity is assumed to behave as the elastic–perfectly plastic material, as the description of Tresca yield criterion. The parametric study is conducted considering the influence of shear modulus, shear strength, initial stress, and anisotropy coefficient. Then an empirical equation of the average UCWP is proposed. This empirical solution and relevant analysis complement the study of cylindrical cavity expansion and reveal the mechanism of the cavity expansion under anisotropic stress.
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Acknowledgments
The work is supported by the National Natural Science Foundation of China, Grant/Award Number: 51708063, 51978105.
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Published In
International Journal of Geomechanics
Volume 20 • Issue 9 • September 2020
Copyright
© 2020 American Society of Civil Engineers.
History
Received: Apr 9, 2019
Accepted: Mar 24, 2020
Published online: Jul 13, 2020
Published in print: Sep 1, 2020
Discussion open until: Dec 13, 2020
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