Simulating the Loading Behavior of Reinforced Strip Footings with a Double-Yield Soil Model
Publication: International Journal of Geomechanics
Volume 16, Issue 1
Abstract
Geosynthetics such as geogrids or geotextiles are often used for the reinforcement of weak soils. Much research has been performed to investigate the bearing capacity of reinforced shallow foundations using the limit equilibrium method with Mohr–Coulomb failure criterion. In this paper, the loading behavior of reinforced strip footings was studied numerically using a commercial finite difference program with a double-yield soil model. First, the load–settlement curve of an unreinforced strip footing was simulated using both Mohr–Coulomb failure criterion and the double-yield model. The simulated bearing capacities were then compared with Terzaghi’s solution. The effects of various parameters, such as burial depth and length of the reinforcement, as well as arrangement of two reinforcement layers, were also studied. Results of this study indicate that the loading behavior of strip footings simulated with the double-yield model is more realistic, and the optimum burial depth and length of reinforcement obtained from this study also agree with values reported by previous investigators.
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Acknowledgments
The work presented in this paper is sponsored by the National Science Council of Taiwan under Grant NSC-101-2119-M-324-001. The authors wish to thank the NSC for its support.
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Published In
International Journal of Geomechanics
Volume 16 • Issue 1 • February 2016
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Mar 10, 2014
Accepted: Nov 13, 2014
Published online: Apr 21, 2015
Discussion open until: Sep 21, 2015
Published in print: Feb 1, 2016
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