Prediction of Pavement Response during Freezing and Thawing Using Finite Element Approach
Publication: Journal of Cold Regions Engineering
Volume 11, Issue 4
Abstract
Although elastic multilayer techniques for pavement analysis have become increasingly popular through advances in software and personal computers, the difficulties of such methods in representing dynamic loading, pavement geometry and nonlinear material response are widely recognized as significant. Particularly in cold regions, where pavement materials are subject to seasonal freezing and thawing, nonlinear material behavior cannot be accurately modeled with these methods. However, many of these difficulties can be overcome by using the finite element method. In this study, an initial attempt to implement a commercially available finite element code in an analysis procedure for pavements in seasonal frost areas is presented. The results, compared with data from an extensively instrumented test road, show that surface deflections and the relative change in pavement stiffness, indicated by the subgrade strength index, are predicted very accurately. Although a time lag between maximum measured and predicted surface deflection is observed during thawing, the procedure is found to be promising and further research is warranted.
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Information & Authors
Information
Published In
Journal of Cold Regions Engineering
Volume 11 • Issue 4 • December 1997
Pages: 308 - 324
Copyright
Copyright © 1997 American Society of Civil Engineers.
History
Published online: Dec 1, 1997
Published in print: Dec 1997
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