Enhanced Strain-Softening Model from Cyclic Full-Flow Penetration Tests
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 142, Issue 3
Abstract
This paper presents a systematic approach for relating fundamental (soil element) strength-degradation models with cyclic full-flow penetration tests. The approach is then employed to enhance the commonly-used exponential strain-softening model by adding a parameter that regulates the slope of degradation. Using the developed methodology, a new relationship between and (the shear strain and cycle number associated with 95% degradation in strength and penetration resistance, respectively) is established for the enhanced strain-softening model. The additional parameter of the enhanced model is optimized against various cyclic field test results and found to be roughly constant. It is demonstrated that the new model independently reproduces the field test results when introduced into advanced numerical analyses of cyclic penetration tests.
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Information
Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 142 • Issue 3 • March 2016
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Sep 22, 2014
Accepted: Aug 18, 2015
Published online: Oct 19, 2015
Published in print: Mar 1, 2016
Discussion open until: Mar 19, 2016
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