Field Tests of the Lateral Monotonic and Cyclic Performance of Jet-Grouting-Reinforced Cast-in-Place Piles
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 141, Issue 5
Abstract
This paper presents a field study of the lateral monotonic and cyclic behavior of jet-grouting, reinforced, cast-in-place piles in soft soils. To assess the contribution of the jet-grouting reinforcement, nine instrumented piles were loaded monotonically or cyclically. The test results show that the ultimate lateral-bearing capacity of the cast-in-place pile increases by 64.2–68.9% due to the jet grouting. Moreover, reinforcement by jet grouting significantly reduces the maximum bending moment of the cast-in-place piles and enhances the pile-head stiffness. The tests also demonstrate that the behavior of reinforced piles is satisfactory when subjected to one-way and two-way cyclic loading. The use of jet-grouting, reinforced, cast-in-place piles is a viable foundation option for lateral loading applications.
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Acknowledgments
The authors would like to acknowledge the support of Grant No. 51325901 from the National Science Foundation for Distinguished Young Scholars of China, and Grant No. 51209183 from the National Nature Science Foundation of China.
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© 2015 American Society of Civil Engineers.
History
Received: Dec 13, 2013
Accepted: Dec 16, 2014
Published online: Feb 4, 2015
Published in print: May 1, 2015
Discussion open until: Jul 4, 2015
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