Experimental and Numerical Study of Eccentrically Loaded Strip Footings Resting on Reinforced Sand
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 135, Issue 10
Abstract
An experimental and numerical study of the behavior of an eccentrically loaded strip footing resting on geosynthetic-reinforced sand is presented. Particular attention was given to simulate footings constructed on unsymmetrical geogrid layers with eccentricity either direction of the footing. Several configurations of geogrid layers with different number, length, layer eccentricity along with the effect of the sand relative density, and the load eccentricity were investigated. A numerical study on a plane strain prototype footing was performed using finite element analysis. Test results indicate that the footing performance could be appreciably improved by the inclusion of layers of geogrid leading to an economic design of the footing. However, the efficiency of the sand-geogrid system is dependent on the load eccentricity ratio and reinforcement parameters. A close agreement between the experimental and numerical trend lines is observed. Based on the numerical and experimental results, critical values of the geogrid parameters for maximum reinforcing effect are established.
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Acknowledgments
The tests were performed in the Soil Mechanics Laboratory of Structural Engineering Department, University of Tanta which is acknowledged.
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Information & Authors
Information
Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 135 • Issue 10 • October 2009
Pages: 1509 - 1518
Copyright
© 2009 ASCE.
History
Received: Nov 12, 2007
Accepted: Feb 7, 2009
Published online: Feb 23, 2009
Published in print: Oct 2009
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