Design of Unbound Pavement Layer Materials Based Upon the Shakedown Concept

Abstract:

This study aims to introduce an alternative design method for unbound pavement layer materials based upon shakedown theory. The kinematic shakedown theorem that describes the ultimate response of an elastic/plastic structure to cyclic loads is used to predict whether stable behaviour in the unbound granular materials layer occurs or excessive rutting will develop. This method seeks the mechanism, from within a class of mechanisms that minimises the shakedown limit load for pavements consisting of layers of Mohr-Coulomb material obeying the associated flow rule. The basic concepts are outlined together with the most recent calculations of the critical design shakedown load. The influence of the of design parameters such as, the strength, stiffness and depth of the base-course material as well as the consequences of load distribution are discussed.

• Periodical: Applied Mechanics and Materials (Volumes 174-177)
• Pages: 726-732
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.174-177.726
• Online since: May 2012
• Authors: Mostapha Boulbibane, Abdullahi Ali Mohamed
• Keywords: Cyclic Load, Pavement Distress, Shakedown Theory, Unbound Granular Materials

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