Statnamic Damping Coefficient: Numerical Modeling Approach
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 134, Issue 9
Abstract
The damping associated with dynamic or statnamic tests has typically been over simplified to provide a “catch-all” factor for those responses that could not be fully accounted for using present analyses. This factor has historically been considered constant for a given pile–soil system, but recent investigations as well as previous case studies show the plausibility of another explanation. This study hypothesizes that damping is more closely associated with the increase in strain and not the total strain. Therein, the change in the volumetric strain is being scrutinized to investigate its relationship to damping. To validate this assumption, a numerical model is created which simulates the testing of a full-scale drilled shaft and results analyzed to determine the extent of the zone of influence and volumetric contribution to damping.
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Acknowledgments
The writers would like to acknowledge and thank the Federal Highway Administration for funding this study; Dr. Alaa Ashmawy, M.ASCE for his technical assistance; Bermingham Foundation Solutions, Ontario; and Foundations and Geotechnical Engineering (FGE) for their continual support.
References
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© 2008 ASCE.
History
Received: Apr 3, 2006
Accepted: Jan 18, 2008
Published online: Sep 1, 2008
Published in print: Sep 2008
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