00607732

Component

http://onlinepubs.trb.org...trr/1990/1286/1286-013.pdf

https://scholar.google.co...dess&publication_year=1990

Analyses of the AASHO Road Test results to derive load equivalency factors (LEFs) as a function of pavement condition (present serviceability index (PSI)) were performed. The results of the analyses show that the LEFs are strongly dependent on the pavement condition, i.e., LEF values increase as the initial PSI decreases. This result may affect the analyses of legal load limits and special movement of heavy trucks. To adapt the above results to multiple loads, a framework based on limiting the strain at the top of the subgrade and various strain criteria for various PSI of the pavement were developed and are presented. A modification to the common Miner's law for damage accumulation was calibrated for tandem axle loads and suggested for use with multiple wheel axles. The use of the proposed framework is illustrated for single, tandem, and multiple axle loads. The results showed that the LEFs of all load configurations are dependent on the condition of the pavement.

This paper appears in Transportation Research Record No. 1286, Design and Evaluation of Rigid and Flexible Pavements 1990. 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

01411074

p. 132-137

1990

Transportation Research Record

0309050707

Figures (11) ; References (8) ; Tables (4)

Axle load force; Evaluation; Load factor; Load limits; Pavements; Serviceability; Tandem axle loads; Trucks

AASHO Road Test

Load equivalence factors; Multi-axle loads; Pavement conditions; Serviceability Index; Single axle loads

Design; Highways; Motor Carriers; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces

TRIS, TRB, ATRI

Apr 30 1991 12:00AM

• AASHTO FLEXIBLE PAVEMENT DESIGN METHOD: FACT OR FICTION?
• AGGREGATE INTERLOCK: A PURE-SHEAR LOAD TRANSFER MECHANISM
• ASSESSMENT OF DAMAGE CAUSED TO PAVEMENTS BY HEAVY TRUCKS IN NEW ENGLAND
• COMPUTER SIMULATION OF LOAD EQUIVALENCE FACTORS
• CONTROL OF FAULTING THROUGH JOINT LOAD TRANSFER DESIGN
• EFFECT OF FRACTURE HEALING ON LABORATORY-TO-FIELD SHIFT FACTOR
• EFFECT OF LANE WIDENING ON LATERAL DISTRIBUTION OF TRUCK WHEELS
• EVALUATION OF THE SUBBASE DRAG FORMULA BY CONSIDERING REALISTIC SUBBASE FRICTION VALUES
• EVALUATION OF VARIABLES AFFECTING FLEXIBLE PAVEMENT THAWING FOR TIMING SPRING LOAD RESTRICTIONS
• FATIGUE DAMAGE PROPERTIES OF ASPHALTIC CONCRETE PAVEMENTS
• FIELD INVESTIGATION OF PUNCHOUT DISTRESS IN CONTINUOUSLY REINFORCED CONCRETE PAVEMENT IN ILLINOIS
• FIELD PERFORMANCE AND EVALUATION OF THIN BONDED OVERLAYS
• HEAVILY LOADED TRAILERS: AN APPROACH TO EVALUATE THEIR INTERACTION WITH ASPHALT CONCRETE PAVEMENTS
• INFLUENCE OF AXLE GROUP SPACING ON PAVEMENT DAMAGE
• INTEGRATED COMPUTER MODEL TO ESTIMATE MOISTURE AND TEMPERATURE EFFECTS BENEATH PAVEMENTS
• MECHANISTIC DESIGN CONSIDERATIONS FOR PUNCHOUT DISTRESS IN CONTINUOUSLY REINFORCED CONCRETE PAVEMENT
• MICH-PAVE: A NONLINEAR FINITE ELEMENT PROGRAM FOR ANALYSIS OF FLEXIBLE PAVEMENTS
• OVERLAY DESIGN METHOD FOR FLEXIBLE PAVEMENTS IN ARIZONA
• PREDICTION OF DAMAGE TO FLEXIBLE PAVEMENTS IN SEASONAL FROST AREAS
• PRESTRESSED CONCRETE PAVEMENT: INSTRUMENTATION, BEHAVIOR, AND ANALYSIS OF HORIZONTAL MOVEMENTS
• PROBABILISTIC MODELING OF FLEXIBLE PAVEMENTS
• THAW WEAKENING OF PAVEMENT STRUCTURES IN SEASONAL FROST AREAS
• VALIDATION OF CONCRETE PAVEMENT RESPONSES USING INSTRUMENTED PAVEMENTS