Pile Aging in Cohesive Soils
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Volume 139, Issue 9
Abstract
This paper presents the results of a field investigation into pile aging in soft clay that was conducted over a period of 10 years. Static load tests were conducted after the excess pore pressure generated by the installation of 6-m-long, driven concrete piles were fully equalized. These tests allowed the time-capacity aging profile to be established. A normalized capacity-time trend established for the case history is seen to be consistent with the response observed from a wider database of pile tests in clay compiled from the literature. A simple reliability-based design example is provided to highlight the positive impact that pile aging could have for industrial practice.
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Acknowledgments
The original pile tests at the Belfast test site were performed by Dr. Bryan McCabe and Professor Barry Lehane. Their permission to retest these piles is gratefully acknowledged. P.D. is funded by an IRCSET Enterprise Partnership Scholarship in association with Mainstream Renewable Power. K.G. was funded through a Science Foundation Ireland, Research Frontiers grant (10-RFP-GEO-2895).
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 139 • Issue 9 • September 2013
Pages: 1620 - 1624
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Jan 19, 2012
Accepted: Jan 2, 2013
Published online: Jan 4, 2013
Published in print: Sep 1, 2013
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