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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/6068

Title: An appraisal of mass differences between individual tyres, axles and axle groups of a selection of heavy vehicles in South Africa
Authors: De Beer, M
Sallie, I
Keywords: South African heavy vehicles
South African road design
Road pavement design
Heavy vehicles
Traffic loading
Issue Date: Jun-2012
Citation: De Beer, M and Sallie, I. An appraisal of mass differences between individual tyres, axles and axle groups of a selection of heavy vehicles in South Africa. ICWIM6 - International Conference on Weigh-In-Motion, Dallas, June 4-7, 2012
Series/Report no.: Workflow;9347
Abstract: In road design, accurate quantification of traffic loading remains a challenge. Research in South Africa with the Stress-In-Motion (SIM) system has concentrated on interaction forces between slow-moving tyres and the textured SIM device. A field study of 2 666 heavy vehicles (HVs) with Gross Combination Mass, (GCM) > 3 500 kg was conducted, where the mass (or weight) of each tyre (approximately 47 242 tyres (or wheels)) was measured. The measurements were done at slow speed over the SIM device on a rigid concrete platform. Valuable data sets in terms of inter-wheel and axle unit-mass variation were collected. The overall finding is that assumptions in road design of equal load sharing between all tyres, axles and axle groups for HVs are challenged, since unequal load sharing were identified and statistically quantified in this study. It is recommended that this finding be included for ensuring road pavement design optimisation.
Description: Copyright: 2012 ISWIM. Presented at the 6th International Conference on Weigh-in-motion, Dallas, June 4-7, 2012.
URI: http://hdl.handle.net/10204/6068
Appears in Collections:Infrastructure engineering
General science, engineering & technology

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