Side Shear Setup. II: Results From Florida Test Piles
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VIEW THE REPLYPublication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 131, Issue 3
Abstract
This paper analyzes the results of a driven pile side shear setup (SSS) test program performed at the University of Florida and described in a companion paper. All pile segments showed SSS, with similar magnitudes in both cohesionless and cohesive soils, and irrespective of depth. Horizontal effective stresses increased after driving, but then stabilized as induced pore pressures dissipated. SSS continued long after pore pressure dissipation due to other aging effects. Pile load tests in all soil types, and standard penetration tests with torque measurement (SPT-T) in cohesive soils, confirmed the approximate semilog-linear time versus SSS behavior and the usefulness of the setup factor . Staged (repeated) tests significantly increased SPT-T measurements, suggesting a reduction factor of 0.4 for SSS results measured by staged testing. We believe that engineers can now include SSS in routine design, using a minimum setup factor for soils similar to those tested, or higher if supported by dynamic or static pile tests, or by SPT-T predictor tests. Examples demonstrate a proposed SSS design method.
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References
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Information
Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 131 • Issue 3 • March 2005
Pages: 301 - 310
Copyright
© 2005 ASCE.
History
Received: Aug 11, 2003
Accepted: Jun 26, 2004
Published online: Mar 1, 2005
Published in print: Mar 2005
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