EVALUATION OF WHEEL-LOAD DISTRIBUTION FOR THE PURPOSE OF COMPUTING STRESSES IN CONCRETE PAVEMENTS
THE OBJECTIVE OF THIS ANALYSIS IS THE EVALUATION OF PROPER ALLOWABLE OR WORKING DISTRIBUTION FACTORS SUITABLE FOR GENERAL USE IN STRESS COMPUTATIONS FOR GIVEN WHEEL LOADS WITH THE TIRE EQUIPMENT MOST LIKELY TO BE USED IN CONNECTION WITH THAT LOADING. WHERE DUAL PNEUMATIC TIRES ARE INVOLVED AN EQUIVALENT RADIUS OF DISTRIBUTION FOR THE WHEEL LOAD IS READILY OBTAINED FROM A PROPER COMBINATION OF THE SEPARATE SLAB STRESSES PRODUCED BY EACH TIRE. BY CHARTING VALUES OF THE DISTRIBUTION RADIUS IT HAS BEEN FOUND POSSIBLE TO EXPRESS BY AN EMPIRICAL FORMULA THE VIRTUAL RADIUS "A" IN TERMS OF THE WHEEL LOAD FOR EACH LOAD POSITION. EXAMINATION OF THE RECOMMENDATIONS OF THE TIRE AND RIM ASSOCIATION SHOW THAT FOR WHEEL LOADS IN EXCESS OF 3000 LB. THE COST PER WHEEL IS LESS WITH DUALS THAN WITH SINGLE TIRES, WHICH LARGELY ACCOUNTS FOR THE PREVALENCE OF DUAL TIRES ON COMPARATIVELY LIGHT TRUCKS AND BUSSES. ANALYSIS OF RELATIVE COSTS INDICATES THAT ONE MAY ASSUME, FOR DESIGN PURPOSES, THAT THE MOST PROBABLE TYPE OF TIRE EQUIPMENT, EXCLUSIVE OF PASSENGER CAR BALLOONS, MAY BE; HIGH PRESSURE SINGLES FOR WHEEL LOADS UP TO 3000 LB., HIGH PRESSURE DUALS FROM 3000 TO 8000 LB., AND BALLOON DUALS FOR WHEEL LOADS OVER 8000 LB. IT IS ASSUMED THAT THE GREAT MAJORITY OF OPERATORS WILL ADHERE RATHER CLOSELY TO THE LOAD INFLATION RECOMMENDATIONS OF THE MAKERS. /AUTHOR/
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Supplemental Notes:
- Vol 14, ParT I, PP 225-254, 11 FIG, 5 TAB, 6 REF. 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.
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Authors:
- Bradbury, R D
- Publication Date: 1935
Media Info
- Media Type: Digital/other
- Monograph Title: Proceedings of the Fourteenth Annual Meeting of the Highway Research Board Held at Washington, D.C. December 6-7, 1934. Part I
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Serial:
- Highway Research Board Proceedings
- Volume: 14
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Benefit cost analysis; Concrete pavements; Pneumatic equipment; Structural analysis; Tires; Wheel loads
- Uncontrolled Terms: Wheel load distribution
- Old TRIS Terms: Pneumatic tire
- Subject Areas: Highways; Pavements; Vehicles and Equipment;
Filing Info
- Accession Number: 00207171
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Aug 15 1971 12:00AM