Fatigue Analysis of Prestressed Concrete Pavement

Abstract

A theoretical model to predict the fatigue life along with the punching shear failure of prestressed concrete pavements loaded with a stationary load, is proposed. A layered shell element considering shear failure is used in the analysis. An octahedral constitutive relation is used to model concrete in compression. In tension, the concrete is linearly elastic with cracking occurring at points of maximum tension when the fatigue life is used up. A smeared crack model is used with a shear retention factor for concrete cracking. A multi-linear curve was used for prestressing steel model. The comparison between predicted and experimental results appears to be very satisfactorily. 151