Performance of Geosynthetic-Reinforced and Pile-Supported Embankment with Consideration of Soil Arching
Publication: Journal of Engineering Mechanics
Volume 144, Issue 12
Abstract
The phenomena of soil arching is frequently encountered in geosyntheic-reinforced and pile-supported embankments (GRPSE). This study emphasizes a complicated issue of interactions integrating the embankment soil and geosynthetic-reinforced granular layer (GRL), as well as foundation soil reinforced with piles, on the performance of the GRPSE system. In this modeling, the GRL layer was treated as a reinforced Timoshenko beam that suffers from arching loads, and the mobilization of arching loads would depend upon the differential settlement between piles and soft soils. In addition, the equivalent bending stiffness of GRL, accounting for the tensionless behavior of the granular layer, was also developed, and a correlation of the arch height and differential settlement was investigated by parametric study. The results indicate that the growth of arch height in the embankment would be promoted by pile–soil differential settlement, pile spacing, and pile diameter but inhibited by the shear strength of embankment soil.
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Acknowledgments
This research was funded through the National Natural Science Foundation of China (NSFC No. 51678231) and the Basal Research Fund Support by Hunan University.
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Published In
Journal of Engineering Mechanics
Volume 144 • Issue 12 • December 2018
Copyright
©2018 American Society of Civil Engineers.
History
Received: Jan 31, 2018
Accepted: Jun 12, 2018
Published online: Sep 28, 2018
Published in print: Dec 1, 2018
Discussion open until: Feb 28, 2019
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