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Stability of an unsupported vertical circular excavation in clays under undrained condition

Khatri, Vishwas N and Kumar, Jyant (2010) Stability of an unsupported vertical circular excavation in clays under undrained condition. In: Computers and Geotechnics, 37 (3). pp. 419-424.

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Official URL: http://dx.doi.org/10.1016/j.compgeo.2009.11.001


By using the axisymmetric finite elements static limit analysis formulation, proposed recently by the authors, the stability numbers (gamma H/c(o)) for an unsupported vertical circular excavation in clays, whose cohesion increases with depth, have been determined under undrained condition; gamma = unit weight, H., height of the excavation and c(o) = cohesion along ground surface. The results are obtained for various values of H/b and m; where b = the radius of the excavation and m = a non-dimensional parameter which accounts for the rate of the increase of cohesion with depth. The values of the stability numbers increase continuously both with increases in H/b and m. The results obtained in this study compare well with those available in literature.(C) 2009 Elsevier Ltd. All rights reserved.

Item Type: Journal Article
Publication: Computers and Geotechnics
Publisher: Elsevier Science
Additional Information: Copyright of this article belongs to Elsevier Science.
Keywords: Axisymmetric problems; Excavation;Limit analysis; Optimization;Plasticity
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Date Deposited: 10 Jun 2010 07:42
Last Modified: 19 Sep 2010 05:59
URI: http://eprints.iisc.ac.in/id/eprint/27009

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