Evaluation of a Permit Vehicle Model Using Weigh-in-Motion Truck Records
Publication: Journal of Bridge Engineering
Volume 17, Issue 2
Abstract
Permit truck models are used to consider local truck traffic in addition to national live load models in bridge design and rating practices. Weigh-in-motion (WIM) systems installed in the United States provide millions of truck records that can be used for evaluating such truck models. In this study, the standard permit vehicle in Wisconsin was evaluated by using six million WIM truck records collected in 2007. The evaluation was on the basis of statistical analyses of the maximum moments and shear in simply supported, 2-span, and 3-span continuous girders in the selected heaviest 5% of trucks in each vehicle class/group. The comparisons showed that 5-axle, short, single-unit trucks may cause larger moment/shear in bridge girders than the standard permit vehicle, and a 5-axle truck model was proposed to supplement the standard permit vehicle for possible use in bridge design and rating in Wisconsin.
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Acknowledgments
This research project was partially funded by the Wisconsin Department of Transportation (WisDOT)WIDOT. Their support is gratefully acknowledged. The authors are grateful to the support provided by the National Center for Freight, Infrastructure, Research, and Education (CFIRE). Information contained herein does not necessarily represent the views of the sponsors.
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Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 17 • Issue 2 • March 2012
Pages: 389 - 392
Copyright
© 2012 American Society of Civil Engineers.
History
Received: Oct 27, 2010
Accepted: Mar 24, 2011
Published online: Mar 26, 2011
Published in print: Mar 1, 2012
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