Engineering Transactions, 48, 3, pp. 221–242, 2000
10.24423/engtrans.589.2000

Suspension Dynamics and Pavement Wear

J. de Pont
TERNZ
New Zealand

B. Steven
University of Canterbury
New Zealand

Recently a series of three accelerated dynamic loading tests was carried out at the Canterbury Accelerated Pavement Testing Indoor Facility (CAPTIF). The aim of these tests was to determine the influence of dynamic loading on pavement wear. This paper presents an investigation into the relationships between the permanent vertical surface deformation (VSD) of the pavement, the applied dynamic wheel loads and the pavement structural stiffness. It is shown that the VSD was correlated with both the pavement stiffness and the dynamic wheel forces but that the relationship with wheel forces was highly dependent on the level of dynamic loading. A surrogate measure for pavement strain formed by combining pavement stiffness and wheel force into a single parameter provided the strongest correlation with VSD. Using this "strain" parameter as the independent variable of a power law predictor for VSD gives a best fit estimate for the exponent between one and two.
Keywords: dynamic wheel loads; accelerated pavement testing; pavement wear; suspension dynamics; road–friendliness
Full Text: PDF
Copyright © Polish Academy of Sciences & Institute of Fundamental Technological Research (IPPT PAN).

References

R.R. ADDIS, A.R. HALLIDAY and C.G.B. MITCHELL, Dynamic loading of road pavements, [In:] Proceedings of First International Symposium on Heavy Vehicle Weights and Dimensions, Kelowna, British Columbia 1986.

D. CEBON, An investigation of the dynamic interaction between wheeled vehicles and road surfaces, PhD thesis Cambridge University, 1985.

D. CEBON, Interaction between heavy vehicles and roads, SAE SP-951 930001, SAE, SP-951930001, 1993.

D.J. COLE and D. CEBON, Truck tires, suspension design and road damage, [In:] International Rubber Conference IRC 96, Manchester, UK, 1996.

Council of the European Communities. Annex III of the Council Directive 92/7/EEC amending Directive 85/3/EEC on the weights, dimensions and certain technical characteristics of certain road vehicle, Council of European Communities, Brussels 1992.

J.J. de PONT, B.D. PIDWERBESKY and B.D. STEVEN, The influence of vehicle dynamics on pavement life, Heavy Vehicle Systems, Special Series, Int. J. of Vehicle Design, Vol 6, Nos 1/4, 99–114, 1999.

T. EISENMANN, Dynamic wheel load fluctuation – road stress, Strasse und Autobahn, 4, 127–128, 1975.

W.J. KENIS and W. WANG, OECD DIVINE Element 1 final report. Accelerated pavement testing, FHWA, McLean, Va 1997.

OECD, OECD DIVINE project. Final technical report, OECD, Road Transport Research Programme, OECD, Paris 1997.

OECD, Dynamic loading of pavements, Rep. No. DSTI/RTR/IR2[92]2, OECD Road Transport Research Programme, OECD, Paris 1992.

B.D. PIDWERBESKY, Accelerated dynamic loading of flexible pavements at the Canterbury accelerated pavement testing indoor facility, Transportation Research Record 1482, 79–86, Washington, D.C. 1995.

P.F. SWEATMAN, A study of dynamic wheel forces in axle group suspensions of heavy vehicles, Rep. No. 27, Australian Road Research Board, Melbourne 1983.

J.H.F. WOODROOFFE, P.A. LEBLANC and K.R. LEPIANE, Effects of suspension variations on the dynamic wheel loads of a heavy articulated highway vehicle, Rep. No. 11, Roads and Transportation Association of Canada 1986.




DOI: 10.24423/engtrans.589.2000