IMPACT EFFECT ON RIGID PAVEMENT CORNER HAVING LOW SPOTS

AN APPROXIMATE ANALYSIS HAS BEEN MADE OF THE ADDITIONAL DEFLECTION THAT OCCURS IN A RIGID PAVEMENT CORNER BECAUSE OF THE IMPACT OF A MOVING WHEEL OVER A LOW SPOT IN THE REGION. ANALYTICAL SOLUTIONS FOR BOTH SUPPORTED AND UNSUPPORTED CONDITIONS OF THE CORNER HAVE BEEN PRESENTED. WHEN THERE IS A LOW SPOT, THE DYNAMIC DEFLECTION OF THE CORNER INCREASES VERY RAPIDLY WITH THE SPEED OF THE VEHICLE UP TO A CERTAIN LIMITING SPEED, DEPENDING ON THE CHARACTERISTICS OF THE SLAB AND SUPPORT CONDITION. IN THE CASE OF THIN SLABS, THE INCREASE MAY BE AS HIGH AS 90 PERCENT ABOVE THE STATIC VALUE. IN COMPARISON, WHEN NO LOW SPOT IS PRESENT, THE DYNAMIC DEFLECTION DECREASES WITH THE VEHICLE SPEED AND IS LOWER THAN THE STATIC VALUE. EXPERIMENTS CONDUCTED FOR SOME SELECTED CASES SHOW THAT THE COMPARISON BETWEEN ANALYTICAL EXPERIMENTAL VALUES OF ADDITIONAL DYNAMIC DEFLECTION IS SATISFACTORY WITHIN THE LIMITATION OF THE INVESTIGATION. /AUTHOR/

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/hrr/1971/362/362-004.pdf
• Supplemental Notes:
  • Sponsored by Committee on Flexible 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.
• Authors:
  • Ghosh, R K
  • Lal, Ram
  • Vijayaraghavan, S R
• Publication Date: 1971

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: pp 30-47
• Monograph Title: Pavement systems
• Serial:
  • Highway Research Record
  • Issue Number: 362
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Deflection; Joints; Mathematical analysis; Pavements; Rigid pavements; Slabs; Texture
• Old TRIS Terms: Joint; Pavement corners; Pavement deflection
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 00207391
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Mar 7 1972 12:00AM