Performances of Large-Diameter Cast-in-Place Concrete Pipe Piles and Pile Groups under Lateral Loads
Publication: Journal of Performance of Constructed Facilities
Volume 27, Issue 2
Abstract
Large-diameter cast-in-place concrete pipe (PCC) pile is widely used for pile foundation and pile-supported embankment over soft clay in China. However, studies on PCC pile-soil reactions ( curves) or performance of the pile groups under lateral load are not widely reported. A large-scale model test of a single PCC pile under lateral load is carried out, and its lateral bearing capacity, bending moment, and curves are measured and analyzed. The deflection and bending moment of this PCC pile is calculated by the curves method and modified pile modulus using LPILE software. Three-dimensional numerical analyses are conducted using ABAQUS software. The reliability and accuracy of the numerical simulation model are verified by comparing the results of the large-scale model test with the LPILE calculation. The distribution of deflection and bending moment along the pile and pile group efficiencies of the PCC piles are comparatively analyzed with those of a drilled shaft, which has the same concrete volume. Then, the lateral performance of the PCC pile-supported embankment influence factors are analyzed and discussed. The results show that the PCC piles under lateral load can be calculated by the curves developed for drilled shaft and modified pile modulus using LPILE software. It also shows that PCC pile-supported embankment is more cost effective than conventional pile (solid circular section pile) supported embankment.
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Acknowledgments
We acknowledge financial support from the National Natural Science Foundation of China (Grant Nos. 51008116 and 51278170), the National Science Joint High Speed Railway Foundation of China (No. U1134207), and the 111 Project (No. B13024). We gratefully acknowledge Dr. Jian-Wei Zhang and Master Xue-Jun Tao for their contributions to the model tests. Finally, Kenneth L. Carper of Washington State University, the three anonymous reviewers, and the editor are sincerely appreciated for their great comments and suggestions, which substantially improved the presentation of this paper.
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Information & Authors
Information
Published In
Journal of Performance of Constructed Facilities
Volume 27 • Issue 2 • April 2013
Pages: 191 - 202
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Mar 15, 2011
Accepted: Oct 17, 2011
Published online: Oct 20, 2011
Published in print: Apr 1, 2013
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