Influence of Boundary Conditions in a Finite-Element Analysis of River Levees
Publication: International Journal of Geomechanics
Volume 11, Issue 5
Abstract
The effects of boundary conditions on the stability of a river levee built on a low-permeability soil layer overlying a coarse-grained deposit were studied by using the finite-element method (FEM). The FEM analyses could predict stable or unstable levee conditions depending on the assumed distance between the levee and the external boundary of the mesh where the water table was assumed undisturbed. Possible causes of this notable drawback are discussed. The calibration of the numerical seepage model, through a back analysis of piezometer measurements, that could limit the observed boundary effects is suggested.
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© 2011 American Society of Civil Engineers.
History
Received: Oct 7, 2009
Accepted: Oct 17, 2010
Published online: Sep 15, 2011
Published in print: Oct 1, 2011
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