Shaking Table Model Tests on Pile Groups behind Quay Walls Subjected to Lateral Spreading
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 136, Issue 3
Abstract
This paper presents experimental results of 1-g shaking table model tests on a pile group behind a sheet-pile quay wall. The main purpose was to understand the mechanisms of liquefaction-induced large ground deformation and the behavior of the pile group subjected to the lateral soil displacement. The sheet-pile quay wall was employed to trigger the liquefaction-induced large deformation in the backfill, and a study was made of the effect of several parameters such as soil density, amplitude and frequency of input motion, pile head fixity, and superstructure on the magnitude of soil lateral displacement and the maximum lateral force of liquefied soil. Furthermore, distribution of the maximum lateral force within the group pile was thoroughly studied. It was found that the force varies depending on the position of individual piles in the group. To evaluate the contribution of each pile in the total lateral force, a new two-dimensional parameter that is called contribution index was introduced and recommended values for each pile were suggested. Finally, it is concluded that displacement and velocity of soil are the most important parameters that affect the distribution of the lateral forces in the group pile, and these two parameters are highly dependent on the configuration of the ground (geometry).
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Acknowledgments
We wish to thank Prof. Junichi Koseki from the University of Tokyo for his invaluable recommendations and constructive discussions. The cooperation of Mr. R. Jamshidi in conducting shaking table experiments is also highly appreciated. The writers thank the reviewers for their very constructive and detailed comments.
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Information & Authors
Information
Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 136 • Issue 3 • March 2010
Pages: 477 - 489
Copyright
© 2010 ASCE.
History
Received: Dec 19, 2007
Accepted: Mar 9, 2009
Published online: Mar 13, 2009
Published in print: Mar 2010
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