Side Shear Setup. I: Test Piles Driven in Florida
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VIEW THE REPLYPublication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 131, Issue 3
Abstract
The available literature indicates that pile side shear increases almost linearly with the logarithm of time elapsed after driving, sometimes described using a dimensionless setup factor. A test pile program conducted by the University of Florida measured side shear setup (SSS) for up to 4.7 years on five, , square, prestressed, concrete piles driven into coastal plain soils at different sites. Dynamic tests performed during initial driving and two restrikes measured short-term SSS. Osterberg cells, the first installed in driven concrete piles, measured long-term SSS starting within of driving and continuing with two to five additional, staged tests. Extensive instrumentation, including vibrating wire strain gauges, Marchetti total stress cells, and vibrating wire piezometers, divided the five piles into 28 segments by soil type with horizontal effective stress measurements for 18 of the segments. This paper describes the University of Florida test pile program and its results. A companion paper analyzes the test results and recommends procedures for implementing SSS in design.
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Acknowledgments
The National Science Foundation provided primary funding for this project with substantial assistance from the FDOT, the FHWA, and Schmertmann and Crapps, Inc. FDOT Districts 1, 2, 3, and 5 provided valuable assistance in arranging the installation of the test piles in conjunction with on-going bridge projects, and field testing support for the site investigations. The following FDOT Engineers helped facilitate this research: Mr. William Knight, Dr. Sastry Putcha, Mr. Chandra Samakur, Mr. Jon Foshee, Mr. Tom Malerk, Dr. Ching Kuo, Ms. Terry Puckett, and Mr. Peter Lai.
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Information
Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 131 • Issue 3 • March 2005
Pages: 292 - 300
Copyright
© 2004 ASCE.
History
Received: Aug 11, 2003
Accepted: Jun 26, 2004
Published online: Mar 1, 2005
Published in print: Mar 2005
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