Liquefaction and Undrained Response Evaluation of Sands from Drained Formulation
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 125, Issue 8
Abstract
A general approach has been established to assess the undrained stress-strain curve and effective stress path under monotonic loading from drained triaxial tests. An appropriate formulation of a drained and drained rebounded (i.e., overconsolidated) triaxial test response is developed that, in turn, allows the assessment of developing liquefaction and the undrained behavior of saturated sands. The formulation presented is based upon reported experimental drained test results that were obtained from different investigators using different testing techniques. This formulation is a function of the confining pressure and basic properties of the sand, such as relative density, uniformity coefficient, and particle shape (roundness), which can be obtained from visual inspection. The approach is verified by comparing predicted and reported (observed) undrained behavior. The developed formulas allow one to predict the potential of sand to liquefy, the type of liquefaction, the peak and residual strength values, as well as the whole undrained stress-strain curve and effective stress path. The simplicity of this approach makes it an attractive general method to characterize the undrained behavior of sands in a preliminary analysis with no need to run sophisticated experimental tests.
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Information & Authors
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 125 • Issue 8 • August 1999
Pages: 649 - 658
History
Received: Mar 3, 1998
Published online: Aug 1, 1999
Published in print: Aug 1999
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