Isolation of DDC Impact to Sheet Pile Walls by Open Trenches
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 138, Issue 1
Abstract
This paper investigates the effectiveness of open trenches in reducing the deflections of sheet pile walls during deep dynamic compaction (DDC). This investigation included a series of comprehensive parametric studies using a two-dimensional (2D) finite-element (FE) method. Prior to investigation, a new dynamic approach based on the time history of tamper penetration depth was developed to simulate DDC impact, and its reliability and accuracy were verified by field measurements. Then, three open trenches with different cross-section shapes were examined. The dimensional effects of the trenches on reducing wall deflections were analyzed and discussed, and their reduction efficiencies were compared. For the investigated shallow open trenches, increasing trench depth or width can efficiently improve their isolation effects on reducing wall deflections. The cross-section shapes of open trenches do not impose apparent influences.
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Acknowledgments
Financial support from the National Natural Science Foundation of China (NSFCNSFC Grants No. 50908172, No. NSFC51109125, and No. NSFC40972192), Kwang-hua Funds for College of Civil Engineering at Tongji University, is gratefully acknowledged. In addition the writers would like to thank the valuable comments from Dr. K. L. Fishman, EBM, and two anonymous reviewers, which improved the presentation of this paper.
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Information & Authors
Information
Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 138 • Issue 1 • January 2012
Pages: 110 - 114
Copyright
© 2012 American Society of Civil Engineers.
History
Received: Jun 4, 2009
Accepted: Mar 18, 2011
Published online: Mar 21, 2011
Published in print: Jan 1, 2012
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