Statistical Analysis of Earthquake-Induced Bending Moment in Fixed-Head Piles Embedded in Soft Clay
Publication: Journal of Engineering Mechanics
Volume 143, Issue 9
Abstract
Investigations of earthquakes have shown that piles in soft or liquefiable soils are more susceptible to problems arising from ground amplification or excessive soil movements. However, because of the complexity of dynamic pile-soil interaction during seismic shaking, the seismic response of piles embedded in soft soils has yet to be fully understood. Based on a series of centrifuge tests and three-dimensional (3D) finite-element analyses, a relevant study has provided a framework for the prediction of seismic pile bending moment response for piles embedded in clays in an average (i.e., mean value) sense. In this paper, this relevant study was extended by considering seismic ground motion as a nonstationary Gaussian stochastic process. By doing so, the coefficient of variation and probability distribution of the pile bending moment were examined through 3D finite-element analyses incorporated with Monte Carlo simulations. The findings from this study likely will provide some useful guidance for practical reliability-based design of piles embedded in soft clays subjected to seismic shaking.
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Acknowledgments
This research is supported by the National Natural Science Foundation of China (51368017) and Key R & D Plan Science and Technology Cooperation Program of Hainan Province, China (ZDYF2016226).
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Published In
Journal of Engineering Mechanics
Volume 143 • Issue 9 • September 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: Jan 5, 2016
Accepted: Jan 25, 2017
Published ahead of print: Apr 17, 2017
Published online: Apr 18, 2017
Published in print: Sep 1, 2017
Discussion open until: Sep 18, 2017
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