|
|
|
Title: COMBINED EFFECT OF TRAFFIC LOADS AND THERMAL GRADIENTS ON CONCRETE PAVEMENT DESIGN
Accession Number: 00469597
Record Type: Component
Availability: Find a library where document is available Abstract: The purpose of this work is to study the behavior of concrete pavements under the simultaneous action of traffic and thermal gradients in concrete slabs. A new procedure for the structural design of concrete pavements in Spain is presented. A fatigue equation, taken from an adjustment of Tepfer's fatigue law and based on data on the behavior of several concrete pavements in Spain, is proposed. Analyses of loading stresses, thermal warping stresses, and simultaneous action stresses in slabs resting on a stratified semi-infinite solid were performed using a finite-element computer program. Empirical and theoretical equations for predicting the different values of thermal gradients and the frequency of their occurrence were established; these equations are based on Fourier's law and data obtained from observations in Spain. A computer program was developed to obtain new equivalence factors based on the results of the calculations. New conversion formulas for axle loads, corresponding to the fatigue damage criterion adopted, were also developed. This simplified and more realistic design procedure was used to check some of the structural sections included in the Spanish Catalogue of Rigid Pavements. Finally, a new catalog, which takes into consideration the influence of the geometric characteristics of slabs (thickness and length) and the presence of thermal gradients, was proposed. Thermal gradients were estimated using a climatic regionalization of Spain.
Supplemental Notes: Publication of this paper sponsored by Committee on Rigid 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
Monograph Title: Monograph Accession #: 01418141
Authors: Faraggi, VictorJofré, CarlosKraemer, CarlosPagination: pp 108-118
Publication Date: 1987
Serial: ISBN: 0309045169
Media Type: Print
Features: Figures
(4)
; References
(6)
; Tables
(13)
TRT Terms: Geographic Terms: Old TRIS Terms: Subject Areas: Design; Freight Transportation; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces
Files: TRIS, TRB, ATRI
Created Date: Jul 31 1988 12:00AM
More Articles from this Serial Issue:
|
