Taking into Account the Effect of Dual Wheels on the Behavior of Lateritic Gravelly Pavements
- 1 Laboratoire de Mécanique et Modélisation, UFR Sciences de l’Ingénieur, Université de Thiès, Thiès, Sénégal
- 2 Chef Département géotechnique, UFR Sciences de l’Ingénieur, Université de Thiès, Thiès, Sénégal
- 3 Laboratoire de Mécanique et Modélisation, UFR Sciences de l’Ingénieur, Université de Thiès, Thiès, Sénégal
Abstract
The representation in the three-dimensional space of the physical model symbolized by the application of the pairing of the wheels described by 2 disks with a radius of 0.125 m and a 0.375 m spacing has the advantage of more accurately simulating the loading. In most cases, the assumption of a uniform distribution of loading on the circular surface is considered. In order to determine the effect of dual wheels, this research proposes a new approach to the distribution of vertical contact stress in three-dimensional space with loading on the circular surface. This allowed evaluating the maximum deformation on the space described by the dual wheels. The results showed that vertical deformation is maximum at the center of each circular surface. The distribution of the vertical contact stress is non-uniform on the circular footprint and has a significant influence on the deformation of the pavement at the level of the bituminous layer. The impact assessment of the twinning reveals that the dual wheels load causes less damage than that of a single wheel. These results are obtained by means of a numerical simulation under Cast3M with a gravitational lateritic pavement.
- Park, D.-W., Martin, A. and Masad, E. (2005) Effects of the Non Uniform Tire Contact Stresses on Pavement Responses. Journal of Transportation Engineering, 131, 873-879. https://doi.org/10.1061/(ASCE)0733-947X(2005)131:11(873)
- Huang, Y. (1993) Pavement Analysis and Design. Prentice-Hall, Inc., Englewood Cliffs, New Jersey.
- Stolarski, H. (1999) Load Testing of Instrument Pavement Section. Department of Civil Engineering, University of Minnesota, Minneapolis.
- Sebaaly and Tabatabee (1989) Models for Damage Growth and Fracture in Nonlinear Viscoelastic Particulate Composites. Applied Mechanics Reviews, 57, 269-275.
- Hirshhoron, R. (2003) The Estimation of Road Wear and Capital Costs, Canada. http://www.tc.gc.ca/pol/en/Report/FullCostInvestigation/Road/Road001.pdf
- Perret, J. and Dumont, A.G. (2004) Modélisation des charges de l’essieu. Rapport final parti 1, Mandat de recherche ASTRA 2000/421.
- Kim Y.R. (2010) Impact of Truck Loading on Design and Analysis of Asphaltic Pavement Structures. Department of Civil Engineering, University of Nebraska, Lincoln.
- Yap, P. (1989) Truck Tire Types and Road Contact Pressures. Second International Symposium on Heavy Vehicle Weights and Dime.
- De Beer, M., Fisher, C. and Fritz, J.J. (1997) Determination of Pneumatic Tire/Pavement Interface Contact Stresses Under Moving Loads and Some Effects on Pavements with Thin Asphalt Surfacing Layers. Eight International Conference on Asphalt Pavements, Seattle, Washington DC, 10-14 August 1997, 179-227.
- Blad, R. (1999) Introducing Improved Loading Assumptions into Analytical Pavement Model Based on Measured Contact Stresses of the Tire. Paper Number CS5-3 Submitted to the International Conference on Accelerated Pavement Testing.
- Huang, B., Mohamad, L. and Wathugala, W. (2002) Development of the Thermo-Viscoplastic Constitutive Model for HMA Mixtures. Presented at the Association of Asphalt Meeting (CD ROM), Colorado Springs, Paving Technologists 77th Annual.
- Fang, H., Haddock, J., White, T. and Hand, A. (2004) On the Characterization of Flexible Pavement Rutting Using Creeps Model-Based Finite Element Analysis. Journal of Finite Element in Analysis and Design, 41, 49-73. https://doi.org/10.1016/j.finel.2004.03.002
- Kim, D., Salgodo, R. and Altschaeffl, A. (2005) Effects of Super Single Tire Loading on Pavement. Journal of Transportation Engineering, 131, 732-742. https://doi.org/10.1061/(ASCE)0733-947X(2005)131:10(732)