A portable mat for measuring the dynamic tyre forces of commercial vehicles is described. The mat is 56 m long, 13 mm thick, and has 141 capacitative strip sensors, spaced at 0.4 m intervals. The accuracy of the mat for measuring dynamic tyre forces generated by heavy commercial vehicles is assessed using an instrumented vehicle. The measured dynamic wheel loads generated by 14 articulated vehicle configurations (three tractors with five trailers) are assessed in terms of a variety of road damage criteria. The results are used to investigate the effects of vehicle configuration, vehicle dynamics, speed, road strength, and road damage criteria on the relative theoretical road damage caused by the vehicles. Conclusions are drawn about tests for measuring and assessing the road-damaging potential of heavy lorries.
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References
1.
Comptroller and Auditor General. Department of Transport: regulation of heavy lorries, 1987 (National Audit Office, House of Commons).
2.
CebonD.Interaction between heavy vehicles and roads. SAE SP-951, 930001, 81 pp., 1993.
3.
ColeD. J.CebonD.Assessing the road-damaging potential of heavy vehicles. Proc. Instn Mech. Engrs, Part D, 1991, 205(4), 223–232.
4.
GyenesL.MitchellC. G. B.PhillipsS. D.Dynamic pavement loads and tests of road-friendliness for heavy vehicle suspensions. Proceedings of Third International Symposium on Heavy vehicle weights and dimensions, Cambridge, 1992 (Thomas Telford).
5.
Council Directive 92/7/EEC. The Council of the European Communities, 1992.
6.
BerryJ.Proposal for a Council Directive, COM(90) 486. Commission of the European Communities, Brussels, 1990.
7.
ColeD. J.CebonD.A capacitative strip sensor for measuring dynamic tyre forces. Proceedings of Second International Conference on Road traffic monitoring, London, 1989 (IEE, London).
8.
CebonD.WinklerC. B.A study of road damage due to dynamic wheel loads using a load measuring mat. Strategic Highway Research Program, National Research Council, Report SHRP-ID/UFR-91–518, 1991.
9.
CebonD.WinklerC. B.Multiple-sensor weigh-in-motion: theory and experiments. Transportation Research Record, TRB, 1991, 1311, 70–78.
10.
MitchellC. G. B.GyenesL.Dynamic pavement loads measured for a variety of truck suspensions. Second International Conference on Heavy vehicle weights and dimensions, Kelowna, British Columbia, 1989.
11.
ColeD. J.Measurement and analysis of dynamic tyre forces generated by lorries. PhD thesis, Department of Engineering, University of Cambridge, 1990.
12.
Le BlancP. A.WoodrooffeJ. H.PapagiannakisA. T.A comparison of two types of instrumentation for measuring vertical wheel load. Third International Symposium on Heavy vehicle weights and dimensions, Cambridge, 1992 (Thomas Telford).
13.
CebonD.Assessment of the dynamic wheel forces generated by heavy road vehicles. ARRB/FORS Symposium on Heavy vehicle suspension characteristics, Canberra, 1987 (Australian Road Research Board).
14.
KinderD. F.LayM. G.Review of the fourth power law. Australian Road Research Board internal report AIR000–248, 1988.
15.
GillespieT. D., et al. Effects of heavy vehicle characteristics on pavement response and performance. Transportation Research Board NCHRP report 353, 1993.
16.
CollopA. C.CebonD.HardyM. S. A.A visco-elastic approach to rutting in flexible pavements. Technical report CUED/C-MECH/TR 49, Department of Engineering, University of Cambridge, 1992.
17.
CebonD.Theoretical road damage due to dynamic tyre forces of heavy vehicles. Part 2: simulated damage caused by a tandem-axle vehicle. Proc. Instn Mech. Engrs, Part C, 1988, 202(C2), 109–117.
18.
MonismithC. L.SousaJ.LysmerJ.Modern pavement design technology including dynamic load conditions. SAE Conference on Vehicle/pavement interaction, Indianapolis, 1988, SP765, SAE Trans. 881845 (Society of Automotive Engineers, Warrendale, Pa.).
19.
O'ConnellS.AbboE.HedrickK.Analyses of moving dynamic loads on highway pavements, Part I: vehicle response. Proceedings of International Symposium on Heavy vehicle weights and dimensions, Kelowna, British Columbia, 1986.
20.
HardyM. S. A.CebonD.Importance of speed and frequency in flexible pavement response. J. Engng Mech. Div. Am. Soc. Civ. Engrs, 1994, 120(3), 463–482.
21.
HardyM. S. A.CebonD.Response of continuous pavements to moving dynamic loads. J. Engng Mech. Div. Am. Soc. Civ. Engrs, 1993, 119(9), 1762–1780.
22.
BrownS. F.Material characteristics for analytical pavement design. In Developments in highway pavement engineering. 1 (PellP. S.), Ch. 2, 1978 (Applied Science Publishers Ltd, London).
23.
FuchsH. O.StephensR. I.Metal fatigue in engineering, 1980 (John Wiley and Sons, New York).
24.
ThrowerE. N.Permanent deformation in a linear viscoelastic model of a road pavement. TRRL supplementary report SR184UC, 1975 (Transport and Road Research Laboratory, Crowthorne, Berkshire).
25.
ThrowerE. N.MortazaviS.DongillJ. W.Methods for predicting permanent deformation-flexible pavements. TRRL contractor's report CR38, 1986 (Transport and Road Research Laboratory, Crowthorne, Berkshire).
26.
KenisW. J.SherwoodJ. A.McMahonT. F.Verification and application of the VESYS structural subsystem. Proceedings of the Fifth International Conference on the Structural design of asphalt pavements, Vol. 1, 1982, pp. 333–345.
27.
ErvinR. D., et al. Influence of truck size and weight variables on the stability and control properties of heavy trucks. University of Michigan Transportation Research Institute report UMTRI–83–10/2, 1983.
28.
HahnW. D.Effects of commercial vehicle design on road stress—vehicle research results. Institut für Kruftfahrwesen, UniversitätHannover (translated by TRRL as WP/V&ED/87/38), 1985.
29.
AddisR. R.HallidayA. R.MitchellC. G. B.Dynamic loading of road pavements by heavy goods vehicles. Congress on Engineering Design, Seminar 4A-03, 1986, Birmingham (Institution of Mechanical Engineers, London).
30.
WoodrooffeJ. H. F.Le BlancP. A.PapagiannakisA. T.Suspension dynamics—experimental findings and regulatory implications. SAE Conference on Vehicle/pavement interaction, SP765, SAE Trans. 881847, Indianapolis, 1988 (Society of Automotive Engineers, Warrendale, Pa.).
31.
CyenesL.MitchellC. G. B.The spatial repeatability of dynamic pavement loads caused by heavy goods vehicles. Third International Symposium on Heavy vehicle weights and dimensions, Cambridge, 1992 (Thomas Telford).
32.
ColeD. J.CebonD.Spatial repeatability of dynamic tyre forces generated by heavy vehicles. Proc. Instn Mech. Engrs, Part D, 1992, 206(1), 17–27.
33.
CollopA. C., et al. Investigation of spatial repeatability using a tire force measuring mat. 72nd Annual Meeting of the Transportation Research Board, Washington, D.C., 1993 (TRB, Washington, D.C.).
34.
SweatmanP. F.A study of dynamic wheel forces in axle group suspensions of heavy vehicles. Australian Road Research Board special report SR27, 1983.
