00607733

Component

http://onlinepubs.trb.org...trr/1990/1286/1286-014.pdf

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

Current pavement design guides do not consider the effects of axle spacings. However, in many jurisdictions, higher loads on dual and triple axles are allowed for higher axle spacings. This practice is examined from a pavement viewpoint to ensure that dual or triple axles do not cause disproportionately greater damage than single axles. Damage effects of dual and triple axles on flexible pavements were evaluated as a function of axle spacing. The evaluation was based both on measured and calculated pavement responses to axle loads. Load equivalency factors are significantly influenced by pavement response parameters and by summation methods used for their derivation. The results display significant influence of the axle spacing on pavement damage. This indication should be taken into account when determining legal load limits on the axles. The AASHTO Guide appears to underestimate the damaging effect of dual and triple axles in comparison with single axles.

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. 138-149

1990

Transportation Research Record

0309050707

Figures (9) ; References (17) ; Tables (2)

Axle load force; Axles; Flexible pavements; Load factor; Load limits; Spacing; Three axle trucks; Trucks

American Association of State Highway and Transportation Officials

Axle spacing; Load equivalence factors

Design; Highways; Motor Carriers; Pavements; Vehicles and Equipment; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces; I90: Vehicles

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
• EXTENSION OF LOAD EQUIVALENCY FACTORS FOR VARIOUS PAVEMENT CONDITIONS
• 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
• 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