Shear Strength in Terms of Coulomb C-Intercept

Article


Assadi Langroudi, A. 2014. Shear Strength in Terms of Coulomb C-Intercept. Journal of Geotechnical Geology. 9 (4), pp. 283-292.
AuthorsAssadi Langroudi, A.
Abstract

Foundation design is conventionally practiced by deriving the allowable bearing capacity in terms of shear strength
and compressibility. Shear strength refers to the individual or combined contribution of drained angle of internal friction
and undrained cohesion, at one of the three instances of peak (failure), residual, or critical (softened) states.
Compressibility refers to the elastic and consolidation settlements; the predominance of which is a factor of soil
permeability. Soil is conventionally examined by confined stressing on the wet stress-state surface, for the coefficient of
volume compressibility to be determined. Ultimate bearing capacity is then reduced to a certain total settlement, and an
arbitrary factor of safety of 3 is finally applied to cover uncertainties. Such a conservative approach however does not
always successfully restrict the settlements beneath foundation. Although the shear strength has become a muchpracticed
subject, there has been a certain lack of emphasis on a fundamental understanding of shear strength
parameters, and even greater neglect of the correct choice of stress path for individual soil types so to derive such
parameters in the most critical stress-hydraulic environment. For that reason, this work aims to critically review the
shear strength literature for a better understanding of the internal angle of friction and c-intercept.

JournalJournal of Geotechnical Geology
Journal citation9 (4), pp. 283-292
ISSN2383-0883
Year2014
PublisherIslamic Azad University
Publisher's version
License
CC BY
Web address (URL)http://geo-tech.iauzah.ac.ir/files_site/paperlist/Journal9-4-140707131839.pdf
Publication dates
Print20 Mar 2014
Publication process dates
Deposited12 Apr 2016
Accepted28 Feb 2014
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