Shakedown Approaches to Rut Depth Prediction in Low-Volume Roads
Publication: Journal of Engineering Mechanics
Volume 136, Issue 11
Abstract
Rutting, due to permanent deformations of unbound materials, is one of the principal damage modes of low traffic pavements. Flexible pavement design methods remain empirical; they do not take into account the inelastic behavior of pavement materials and do not predict the rutting under cyclic loading. A finite-element program, based on the concept of the shakedown theory developed by Zarka for metallic structures under cyclic loadings, has been used to estimate the permanent deformations of unbound granular materials subjected to traffic loading. Based on repeated load triaxial tests, a general procedure has been developed for the determination of the material parameters of the constitutive model. Finally, the results of a finite-element modeling of the long-term behavior of a flexible pavement with the simplified method are presented and compared to the results of a full-scale flexible pavement experiment performed by Laboratoire Central des Ponts et Chaussées. Finally, the calculation of the rut depth evolution with time is carried out.
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Information
Published In
Journal of Engineering Mechanics
Volume 136 • Issue 11 • November 2010
Pages: 1422 - 1434
Copyright
© 2010 ASCE.
History
Received: Oct 2, 2009
Accepted: Mar 15, 2010
Published online: Mar 17, 2010
Published in print: Nov 2010
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