Prediction of Soil Properties from the Concepts of Energy Transfer in Dynamic Penetration Tests
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 135, Issue 8
Abstract
Results from dynamic penetration tests are traditionally interpreted on the basis of empirical correlations, this being a frequent criticism to these tests. An alternative rational method of interpretation is proposed in this paper from which the energy delivered to the composition of rods is used to calculate a dynamic force that represents the reaction of the soil to the penetration of the sampler . Interpretation of soil properties both in sand and clay is based on this calculated dynamic force from which the internal friction angle and the undrained shear strength can be estimated. This is achieved from a simple combination of limit equilibrium analysis and cavity expansion theory. Case studies gathered from the Brazilian experience are reported in this paper to illustrate the applicability of the proposed approach.
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Acknowledgments
The writers wish to express their gratitude to the Brazilian Research Council CNPq for the financial granted for this research project (46.1373/00-9), as well as for Geoforma Geotechnical Engineering Ltd. for workmanship and equipments used in the case studies.
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Information & Authors
Information
Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 135 • Issue 8 • August 2009
Pages: 1092 - 1100
Copyright
© 2009 ASCE.
History
Received: Jul 19, 2007
Accepted: Dec 15, 2008
Published online: Feb 23, 2009
Published in print: Aug 2009
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