Numerical Study of Stress Intensity in Flexible Pavement Under Airplane Loading
Abstract
Stress in the pavement structure leads to all types of failures in road and runway surface. Pavement stress from foreign indicators of failure that the cause of loading, environmental factors, poor construction or a set of them pavement failure can be structural or functional.
Structural failure requires detailed analysis of failure mechanisms and layers are contributing in pavement failure. Repairs are generally very expensive and runway pavement may require reconstruction. One of the common methods for studying of cracks derived from fatigues is fracture mechanics method. In this study, to evaluate the development of sample crack, the airport pavement was modelling by finite element software and the amounts of stress were measured at the crack tip. The results show that, by increasing the thickness of the layer of asphalt, the stresses and displacements are reduced.
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