Semiempirical Approach for Estimation of DDC-Induced Deflections of Sheet Pile Walls in Peat
Publication: Journal of Performance of Constructed Facilities
Volume 24, Issue 1
Abstract
With an inclinometer casing mounted on a sheet pile wall in peat bogs, sheet pile wall deflections were measured during a trial deep dynamic compaction (DDC) test. Analyses of the trial testing data indicated that sheet pie wall deflections were significantly affected by the tamping distance, , (horizontal distance between tamping points and sheet pile walls). The DDC-induced wall deflections can be simulated by an exponential relationship related to . The trial testing results were verified by the finite-element (FE) simulation. The FE analyses indicated that sheet pile wall deflections were linearly proportional to the impact energy per blow, . The analyses of surveyed data showed that sheet pile wall deflections due to DDC were also related to the ratio of the wall penetration depth in the underlying sands, , to the wall height, . Based on these findings, a semiempirical approach, incorporating the key factors that govern the sheet pile wall deflections during DDC, was developed. The estimated wall deflections using this developed method were in reasonable agreement with the field measurements.
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Acknowledgments
The writers thank the editor and the three peer reviewers for their great comments, which have enhanced the presentation of this paper. The funding support from NSFC (Grant No. NSFC50908172 and No. NSFC50679056), NCET (Grant No. UNSPECIFIED06-0378), Shuguang Project (No. UNSPECIFIED05SG25), and Shanghai Leading Academic Discipline Project (No. B308) were gratefully acknowledged.
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Information
Published In
Journal of Performance of Constructed Facilities
Volume 24 • Issue 1 • February 2010
Pages: 87 - 95
Copyright
© 2010 ASCE.
History
Received: Oct 12, 2008
Accepted: May 14, 2009
Published online: Jun 4, 2009
Published in print: Feb 2010
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