Three-Dimensional Slope Stability Analysis Incorporating Coupled Effects of Pile Reinforcement and Reservoir Drawdown
Publication: International Journal of Geomechanics
Volume 19, Issue 4
Abstract
In pile-reinforced dams and bank slopes, the antislide effect of piles and drawdown of reservoirs are two aspects that could significantly affect the slope stability. However, existing studies have incorporated these two factors separately, albeit not in tandem. Moreover, stability assessment of these earth structures is usually performed ignoring the three-dimensional (3D) effect. To address these issues, the kinematic approach of limit analysis is adopted in this technical note for evaluating slope stability based on the 3D rotational failure mechanism. In addition, the coupled effects of pile reinforcement and water drawdown are considered. The analysis is performed for four types of drawdown cases. The results demonstrate that the optimal pile location undergoes significant change during the external drawdown process, while the effect of the declining water level on slope stability follows the similar pattern for varying pile locations.
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Acknowledgments
This work is supported by the National Natural Science Foundation of China (Project 51208301) and Youth Foundation of Jiangxi Scientific Committee (Project 20161BAB216107). The authors wish to express their gratitude for the above financial support.
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Information & Authors
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Published In
International Journal of Geomechanics
Volume 19 • Issue 4 • April 2019
Copyright
© 2019 American Society of Civil Engineers.
History
Received: Nov 24, 2017
Accepted: Sep 17, 2018
Published online: Jan 25, 2019
Published in print: Apr 1, 2019
Discussion open until: Jun 25, 2019
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