Effect of Granular-Column Installation on Excess Pore Pressure Variation during Soil Liquefaction
Publication: International Journal of Geomechanics
Volume 16, Issue 2
Abstract
During many earthquakes, soil liquefaction causes dramatic damage. The use of a granular column is a ground-improvement technique used to mitigate soil liquefaction. The present paper studies the performance of reinforcement with granular columns as a method for mitigation of potential risk of liquefaction during cyclic loading. The generation and dissipation of excess pore pressure are analyzed by considering the granular-column installation effect. This effect is described by a decrease in horizontal permeability within a disturbed zone around the column, which is described by constant, linear, and parabolic variations. The evolution of excess pore pressure is studied as a function of the disturbed zone in terms of reduced horizontal permeability. Obtained results show that a granular-column installation has a significant influence on the mitigation of liquefaction.
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Published In
International Journal of Geomechanics
Volume 16 • Issue 2 • April 2016
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Sep 10, 2014
Accepted: Mar 9, 2015
Published online: Jun 25, 2015
Discussion open until: Nov 25, 2015
Published in print: Apr 1, 2016
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