LAYER ANALYSIS OF THE BRAMPTON TEST ROAD AND APPLICATION TO PAVEMENT DESIGN
CONSIDERABLE ATTENTION HAS BEEN DEVOTED, FURING THE PAST DECADE, TO DEVELOPING A PAVEMENT DESIGN SYSTEM BASED ON STRUCTURAL ANALYSIS CONCEPTS. THE IMPLEMENTATION OF A DESIGN SYSTEM REQUIRES A STRUCTURAL MODEL THAT WILL CALCULATE THE SERVICEABILITY-AGE HISTORY OF VARIOUS ALTERNATIVE STRATEGIES. CONSEQUENTLY, IT IS ESSENTIAL TO RELATE THE STRUCTURAL ANALYSIS OUTPUTS OF STRESSES, STRAINS, AND DEFLECTIONS TO THE SUBSEQUENT PERFORMANCE OF THE PAVEMENT UNDER DIFFERENT TRAFFIC AND ENVIRONMENTAL CONDITIONS. ONE OBJECTIVE OF A RECENT STUDY OF THE BRAMPTON TEST ROAD WAS TO DEVELOP THESE RELATIONS FOR CONDITIONS IN SOUTHERN ONTARIO. BISTRO AND CHEVRON COMPUTER PROGRAMS WERE USED IN ITERATIVE PROCEDURES TO CALCULATE PAVEMENT STRUCTURAL RESPONSE OF STRESSES, STRAINS, AND DEFLECTIONS OF EACH OF THE BRAMPTON TEST ROAD SECTIONS. THE MODULI VALUES REQUIRED FOR THE ANALYSIS WERE DERIVED FROM LABORATORY TEST DATA PROVIDED BY THE ASPHALT INSTITUTE. THESE CALCULATED STRUCTURAL RESPONSES WERE THEN CORRELATED TO OBSERVED OBSERVED PAVEMENT BEHAVIOR AND PERFORMANCE MEASUREMENTS OF THE TEST SECTIONS. CHARTS TO PREDICT SERVICEABILITY LOSSES AS A FUNCTION OF TRAFFIC, TYPE OF BASE MATERIAL, AND VERTICAL STRESSLEVEL ON SUBGRADE SURFACE ARE DEVELOPED. A GOOD RELATION IS FOUND BETWEEN THE MEASURED BENKELMAN BEAM REBOUNDS AND CALCULATED SUBGRADE SURFACE DEFLECTION. EQUIVALENCIES OF VARIOUS TYPES OF BASE MATERIALS ARE DEVELOPED BASED ON EQUAL LOSS OF SERVICEABILITY. FINALLY, THE PAPER PRESENTS A STRUCTURAL DESIGN SYSTEM FOR FLEXIBLE PAVEMENTS BASED ON USE OF LAYERED ANALYSIS TECHNIQUES. IT ALSO DISCUSSES, THROUGH AN EXAMPLE PROBLEM, HOW THIS FITS INTO OVERALL PAVEMENT MANAGEMENT SYSTEMS.
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Availability:
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Supplemental Notes:
- Publication of this paper sponsored by Committee on Theory of Pavement Design. 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:
- Kamel, Nabil I
- Phang, W
- Morris, Jack
- Haas, RCG
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Conference:
- 52nd Annual Meeting of the Highway Research Board
- Location: Washington District of Columbia, United States
- Date: 1973-1-22 to 1973-1-26
- Publication Date: 1973
Media Info
- Media Type: Digital/other
- Features: Figures; References; Tables;
- Pagination: pp 113-126
- Monograph Title: Pavement systems analyses
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Serial:
- Highway Research Record
- Issue Number: 466
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Benkelman beam; Computer programs; Deflection; Flexible pavements; Forecasting; Highway design; Interstate highways; Pavement design; Pavement performance; Pavements; Serviceability; Strain (Mechanics); Stresses; Structural analysis; Test sections
- Old TRIS Terms: Layered system mechanics; Pavement deflection; Strains
- Subject Areas: Design; Highways; Pavements;
Filing Info
- Accession Number: 00206132
- Record Type: Publication
- ISBN: 0309022509
- Files: TRIS, TRB
- Created Date: May 15 1974 12:00AM