Validation of Lade’s Failure Criteria at Overconsolidated General Stress States
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 137, Issue 1
Abstract
Several geotechnical engineering constructions subject the soil to a partial stress reduction. In addition, in practice, often both axisymmetric and nonaxisymmetric conditions can apply in different locations in the ground affected by the construction. In general, the corresponding stress states at failure will be, therefore, overconsolidated and cover a wide domain of the space of the principal stresses. However, the classic failure criteria typically fail to reproduce the observed failure envelope in wide range of stresses. In this note, the original and modified Lade’s criteria are validated and compared against recent data on Pisa clay at general overconsolidated stress states, in compression and extension. A generalization of the modified Lade’s criterion at overconsolidated clays is also proposed.
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Acknowledgments
All the tests were performed during my postgraduate studies funded by the Italian MIUR, under the constant guidance of Prof. S. Rampello and Dr. L. Callisto, which I gratefully acknowledge. The note was written under a research contract from the University of Queensland, partly sponsored by Golder Associates (Brisbane, Australia), to which I am very grateful. I am also very grateful to the anonymous reviewers and the editors for their comments and help that substantially contributed, as indirectly Prof. V.E. Saouma and my family, to the publication of this note.
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Information
Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 137 • Issue 1 • January 2011
Pages: 105 - 108
Copyright
© 2011 ASCE.
History
Received: Oct 12, 2009
Accepted: Jun 18, 2010
Published online: Jun 22, 2010
Published in print: Jan 2011
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