Evaluation of Near-Surface Stress States in Asphalt Concrete Pavement: Three-Dimensional Tire–Pavement Contact Model
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.
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- Summary URL:
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Availability:
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Authors:
- Wang, Guangming
- Roque, Reynaldo
- Morian, Dennis
- Publication Date: 2011
Language
- English
Media Info
- Media Type: Print
- Features: Figures; References;
- Pagination: pp 119-128
- Monograph Title: Pavement Management 2011, Volume 3
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Serial:
- Transportation Research Record: Journal of the Transportation Research Board
- Issue Number: 2227
- Publisher: Transportation Research Board
- ISSN: 0361-1981
Subject/Index Terms
- TRT Terms: Asphalt concrete pavements; Rolling contact; Rutting; Shear stress; Tires
- Uncontrolled Terms: Contact stresses; Tensile stress; Three dimensional models; Top down cracking (Pavements)
- Subject Areas: Highways; Pavements; I23: Properties of Road Surfaces;
Filing Info
- Accession Number: 01334158
- Record Type: Publication
- ISBN: 9780309167505
- Report/Paper Numbers: 11-0332
- Files: TRIS, TRB, ATRI
- Created Date: Mar 25 2011 10:28AM