Full-Scale Axial Load Response of Jetted and Grouted Precast Piles in Cohesionless Soils
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 148, Issue 6
Abstract
Jetted and grouted precast piles (JGPPs) are a newly developed urban-friendly deep foundation technique that employs water jetting for pile penetration and pressure grouting to enhance the axial and torsional resistance of precast piles. Previous experimental studies of JGPPs in a large test chamber setup have revealed that they can withstand very high axial loads; however, validation of the same in a typical field scenario was needed. This paper presents the pioneering study of the full-scale axial response of JGPPs in cohesionless soil condition. The study showed that JGPPs exhibit high skin and tip resistances under axial top-down loading. The paper also proposes a direct method to predict the ultimate skin resistance of JGPPs using the pressuremeter test results. The experimental results were compared with the values estimated using both the proposed and existing methods.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
The authors are indebted to the FDOT, Tallahassee, Florida, for funding this research under Contract No. BDK75-977-41. The authors sincerely appreciate the project managers, Mr. Peter Lai, P.E. (retired); and Mr. Rodrigo Herrera, P.E., FDOT, Tallahassee, for their constant support and involvement in this work. The authors would like to express their gratitude to FDOT’s State Materials Office, Gainesville, for their help and support. The authors would like to extend grateful acknowledgment to Applied Foundation Testing, Inc., for their help in pile grouting; Reliable Constructors, Inc., for pile installation; and LoadTest Ltd., Gainesville, for lending various instruments for the load tests.
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 148 • Issue 6 • June 2022
Copyright
© 2022 American Society of Civil Engineers.
History
Received: Dec 14, 2020
Accepted: Feb 1, 2022
Published online: Mar 21, 2022
Published in print: Jun 1, 2022
Discussion open until: Aug 21, 2022
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