MECHANICS OF CONTINUOUSLY-REINFORCED CONCRETE PAVEMENTS

THIS INVESTIGATION IS PRIMARILY CONCERNED WITH THE DEFLECTIONS AND THE RESULTING STRESSES IN A CONTINUOUSLY- REINFORCED CONCRETE PAVEMENT, LOADED SIMULTANEOUSLY WITH LONGITUDINAL AND TRANSVERSE LOADS. THE THEORY DEVELOPED FOR THE COMPUTATION OF THE DEFLECTIONS IS BASED ON THE COMMON ASSUMPTIONS USED IN THE THEORY OF CONTINUOUS BEAMS ON ELASTIC FOUNDATIONS, AS WELL AS THREE ASSUMPTIONS CONCERNED WITH A CRACKED SLAB ON AN ELASTIC FOUNDATION. THE MAIN ASSUMPTIONS IN THE FIRST CLASS ARE: (1) THE DEFLECTION AT A POINT SOME DISTANCE FROM THE TRANSVERSE LOAD IS ZERO AND (2) THE SUBGRADE MODULUS IS CONSTANT THROUGHOUT THE FULL RANGE OF DEFLECTION. THE ASSUMPTIONS PECULIAR TO THIS PROBLEM ARE: (1) THE CRACKS FORMED BY VOLUME CHANGES IN THE PAVEMENT ARE EASILY SPACED, (2) THE SEGMENTS BETWEEN CRACKS ARE ASSUMED TO BE STRAIGHT, AND (3) THE MOMENT AT A CRACK IS SOME FUNCTION OF THE ANGLE CHANGE. BY CONSIDERING THE GEOMETRY OF THE DEFLECTED PAVEMENT AND THE EQUILIBRIUM OF THE INDIVIDUAL SEGMENTS, A SERIES OF SIMULTANEOUS EQUATIONS MAY BE WRITTEN IN TERMS OF EITHER THE DEFLECTIONS OR THE ANGLE CHANGES AT THE CRACKS. EQUATIONS FOR SHEAR AND MOMENT AT THE CRACKS ARE EASILY WRITTEN. THE EQUATIONS ARE IN SUCH A FORM AS TO CONSIDER ANY COMBINATION OF PAVEMENT LENGTH, CRACK SPACING, SUBGRADE MODULUS, TRANSVERSE LOAD, AND LONGITUDINAL LOAD. /AUTHOR/

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/hrbbulletin/238/238-007.pdf
• Supplemental Notes:
  • No 238, pp 94-104, 10 FIG, 1 TAB, 9 REF, 1 APP 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.
• Authors:
  • Miller, M M
  • Gutzwiller, M J
• Publication Date: 1960

Media Info

• Media Type: Digital/other
• Pagination: 11p
• Monograph Title: Experimental Continuously-Reinforced Concrete Pavements: Progress Reports-1959
• Serial:
  • Highway Research Board Bulletin
  • Issue Number: 238
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Angularity; Beams; Calculation; Continuous structures; Continuously reinforced concrete pavements; Cracking; Deflection; Engineering moments; Loads; Mechanics; Modulus of elasticity; Pavement cracking; Simultaneous equations; Spacing; Stresses; Subgrade (Pavements); Theory
• Uncontrolled Terms: Computation; Continuous beams
• Old TRIS Terms: Angles (Geometry); Combinations; Moments; Shear cracks
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 00206939
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Aug 12 1994 12:00AM