Soil-Pile Response to Blast-Induced Lateral Spreading. II: Analysis and Assessment of the Method
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Volume 132, Issue 2
Abstract
This paper presents an assessment of the potential of using the analysis method for single piles and pile groups subjected to lateral spreading. The computed responses were compared with the results from the full-scale lateral spreading tests in Japan as presented in the Part I companion paper. The responses of the single piles subjected to lateral spreading were determined by imposing the known free-field soil movement profile to the Winkler spring model. The soil springs of nonliquefied soils used in this study were based upon standard springs whereas zero spring stiffness was used for liquefied soils. For the case of pile groups, they were modeled as an equivalent single pile with a rotational spring at the pile head to simulate effect of pile head restraint. A decrease of soil spring stiffnesses using the -multiplier approach was used to account for pile group effects. Based on the results of analyses, the computed responses of all sets of the test piles using a single set of baseline soil properties were in good agreement with the measured responses. These results suggest that the analysis method may be used to estimate the behavior of piles subjected to lateral spreading.
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Acknowledgments
This research was sponsored by the PEER Lifelines Program with support from Caltrans, Pacific Gas & Electric and the California Energy Commission under Contract No. UNSPECIFIED65A0058, as well as by the Pacific Earthquake Engineering Research Center under NSF Contract No. NSFEEC-9701568.
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 132 • Issue 2 • February 2006
Pages: 163 - 172
Copyright
© ASCE.
History
Received: Dec 3, 2003
Accepted: May 15, 2005
Published online: Feb 1, 2006
Published in print: Feb 2006
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