Bearing Capacity of Shallow Foundations in Anisotropic Non-Hoek–Brown Rock Masses
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VIEW THE REPLYPublication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 131, Issue 8
Abstract
Rocks available for the foundations of civil engineering structures are often jointed and behave anisotropically. This paper presents a method to estimate the ultimate bearing capacity of non-Hoek–Brown rock masses. The method makes use of the mapping of joints in the field and simple laboratory tests on intact specimens of rock. Charts can be used to simplify computations in the field. The method uses Bell’s approach of computing bearing capacity, in which the ultimate bearing capacity is determined as the major principal stress at failure under a confining pressure acting on the mass beneath a smooth foundation. A simple parabolic equation is used to define the strength criterion. The uniaxial compressive strength of the jointed rock mass, which is an input parameter to the strength criterion, is determined using the joint factor concept.
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Acknowledgments
Some part of the work presented in this paper has been taken from the PhD thesis of the first author, which was completed under the supervision of Professor T. Ramamurthy of I.I.T. Delhi and the co-author of this paper. The authors gratefully acknowledge the contribution of Professor Ramamurthy in completion of the work. The authors are also thankful to the unknown reviewers of the manuscript for critically reviewing the manuscript and suggesting modifications.
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 131 • Issue 8 • August 2005
Pages: 1014 - 1023
Copyright
© 2005 ASCE.
History
Received: Feb 28, 2002
Accepted: Jun 2, 2004
Published online: Aug 1, 2005
Published in print: Aug 2005
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