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Title: THEORETICAL ANALYSIS OF THE EFFECTS OF WIDE-BASE TIRES ON FLEXIBLE PAVEMENTS USING CIRCLY
Accession Number: 00637681
Record Type: Component
Availability: Find a library where document is available Abstract: Many state highway agencies across the nation are concerned with the effects of wide-base tires on flexible pavements. This concern is supported, in many cases, by legislative regulations that try to limit the extent of damage caused by wide-base tires. A study was done by the California Department of Transportation to characterize and predict the effects of wide-base tires and to evaluate a tentative regulatory limit. The primary objectives were (a) to provide an extensive literature review summary about previous research in the area, including the wide range of regulatory limits, and (b) to perform an improved mechanistic analysis that includes effects of actual temperature gradients and nonuniform contact stress (normal and shear) distributions. The literature review summary indicates that the overall wide-base tire issue cannot be quantified reliably with a single regulatory limit. The reason for this lies in the various factors and assumptions involved in any experimental or theoretical evaluation (e.g., temperature and load conditions). Previous studies assume simple and incomplete loading conditions that are known to differ from actual circumstances. The mechanistic analysis, using a computer program called CIRCLY, shows that the effects of these simplifications significantly alter predicted pavement response. Future evaluations should continue to model the actual nonuniform vertical and shear forces that tires exert on pavement structures. The full influence of these factors should be verified by laboratory and field measurements.
Supplemental Notes: This paper appears in Transportation Research Record No. 1388, Rigid and Flexible Pavement Design and Rehabilitation. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
Monograph Title: Monograph Accession #: 01403222
Language: English
Authors: Perdomo, DarioNokes, BillPagination: p. 108-119
Publication Date: 1993
Serial: ISBN: 0309054575
Features: Figures
(6)
; References
(29)
; Tables
(11)
TRT Terms: Uncontrolled Terms: Old TRIS Terms: Subject Areas: Design; Highways; Pavements; Research; Vehicles and Equipment; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces
Files: TRIS, TRB, ATRI
Created Date: Sep 28 1993 12:00AM
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