Development Of An In Situ Method To Measure Nonlinear Soil Behavior
Author(s)
K. H. Stokoe II, P.J.Axtell, E.M. Rathje
Abstract
Development of an in situ method to measure
nonlinear soil behavior
K.H. Stokoe 11% PJ. Axtell* & E.M. Rathje*
* Department of Civil Engineering,
University of Texas at Austin, United States
*Fugro South, Inc., Houston, Texas, United States
Abstract
One of the key variables in evaluating the response of geotechnical materials
during strong earthquake shaking is their nonlinear behavior. This behavior is
often expressed in terms of the nonlinear reduction in shear and constrained
moduli with increasing strain and the corresponding nonlinear increase in material
damping in shear and constrained compression. Currently, there is total
dependency on laboratory testing to evaluate these nonlinear properties. High-
quality intact samples are often tested. Even with these samples, there is concern
about the accuracy with which the laboratory results represent the in situ
conditions.
To begin to measure nonlinear soil properties in situ, a generalized test method
is under development a
Keywords
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