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Sensors 2017, 17(9), 2053; https://doi.org/10.3390/s17092053

The Effect of Flexible Pavement Mechanics on the Accuracy of Axle Load Sensors in Vehicle Weigh-in-Motion Systems

1
Department of Measurement and Electronics, AGH University of Science and Technology, 30-059 Krakow, Poland
2
Faculty of Civil and Environmental Engineering, Department of Highway and Transportation Engineering, Gdansk University of Technology, 80-263 Gdansk, Poland
*
Author to whom correspondence should be addressed.
Received: 27 July 2017 / Revised: 30 August 2017 / Accepted: 31 August 2017 / Published: 7 September 2017
(This article belongs to the Section Physical Sensors)
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Abstract

Weigh-in-Motion systems are tools to prevent road pavements from the adverse phenomena of vehicle overloading. However, the effectiveness of these systems can be significantly increased by improving weighing accuracy, which is now insufficient for direct enforcement of overloaded vehicles. Field tests show that the accuracy of Weigh-in-Motion axle load sensors installed in the flexible (asphalt) pavements depends on pavement temperature and vehicle speeds. Although this is a known phenomenon, it has not been explained yet. The aim of our study is to fill this gap in the knowledge. The explanation of this phenomena which is presented in the paper is based on pavement/sensors mechanics and the application of the multilayer elastic half-space theory. We show that differences in the distribution of vertical and horizontal stresses in the pavement structure are the cause of vehicle weight measurement errors. These studies are important in terms of Weigh-in-Motion systems for direct enforcement and will help to improve the weighing results accuracy. View Full-Text
Keywords: Weigh-in-Motion; axle load sensors; pavement response; overloaded vehicles; measuring of axle loads Weigh-in-Motion; axle load sensors; pavement response; overloaded vehicles; measuring of axle loads
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Burnos, P.; Rys, D. The Effect of Flexible Pavement Mechanics on the Accuracy of Axle Load Sensors in Vehicle Weigh-in-Motion Systems. Sensors 2017, 17, 2053.

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