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Title:
Evaluation of Near-Surface Stress States in Asphalt Concrete Pavement: Three-Dimensional Tire–Pavement Contact Model
Accession Number:
01334158
Abstract:
A sophisticated three-dimensional (3-D) tire model was placed directly on a three-layer asphalt concrete (AC) pavement system to form a 3-D tire–pavement contact model. The model was then verified with measured contact stresses and was used to investigate near-surface stress states in the AC layer. When compared with the traditional uniform vertical loading model, the 3-D tire–pavement contact model produced stress states not only higher in magnitude but also more variable in distribution. The 3-D tire–pavement contact model produced much higher principal tensile stress and maximum shear stress near the tire edge; the increased stress was a possible explanation for instability rutting and associated top-down cracking. A critical shear plane was developed for the top 50 mm of the AC layer by using a p-q diagram, and the tire–pavement contact model produced a much higher shear yield percentage.
Monograph Accession #:
01358795
Report/Paper Numbers:
11-0332
Authors:
Wang, Guangming
Roque, Reynaldo
Morian, Dennis
Features:
Figures
(16)
; References
(18)
Subject Areas:
Highways; Pavements; I23: Properties of Road Surfaces
Created Date:
Feb 17 2011 5:24PM
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