LOADING HISTORY OF HIGHWAY BRIDGES: COMPARISON OF STRESS- RANGE HISTOGRAMS

THE RESULTS OF A LOADING HISTORY FIELD TEST ON A RURAL HIGHWAY BRIDGE IN MARYLAND ARE PRESENTED. TWO WAYS OF DATA REDUCTION ARE COMPARED: ONE TECHNIQUE NOTES ONLY ONE STRESS EVENT PER TRUCK PASSAGE, WHILE THE OTHER TECHNIQUES PRODUCES SEVERAL EVENTS FOR EACH VEHICLE. THE COMPOSITION AND WEIGHT OF THE TRUCK TRAFFIC ARE PRESENTED, ALONG WITH A NUMBER OF OCCURRENCES OF MULTIPLE CROSSING. SEVERAL METHODS OF ESTIMATING THE FATIGUE LIFE OF THE BRIDGE ARE ALSO ATTEMPTED. SOME CONCLUSIONS ARE THAT SIGNIFICANT DIFFERENCES IN THE SHAPE OF STRESS-RANGE HISTOGRAMS CAN RESULT, DEPENDING ON THE INCLUSION OR EXCLUSION OF THE SEVERAL SECONDARY STRESS RANGES, BUT THAT FOR STRESS RANGES ABOVE 3.0 KSI NO SIGNIFICANT DIFFERENCES IN THE HISTOGRAMS ARE FOUND. HIGHER AVERAGE STRESS RANGES WERE PRODUCED BY MULTIPLE CROSSINGS THAN BY SINGLE CROSSINGS. IT WAS ALSO CONCLUDED THAT THE MAIN LOAD-CARRYING MEMBERS OF THIS BRIDGE ARE NOT LIKELY TO SUFFER FROM TRAFFIC-INDUCED FATIGUE DISTRESS. /AUTHOR/

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/hrr/1971/354/354-001.pdf
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309019672
• Supplemental Notes:
  • Sponsored by Committee on Dynamics and Field Testing of Bridges and presented at the 50th Annual Meeting. 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:
  • Galambos, C F
  • Heins Jr, C P
• Conference:
  • 50th Annual Meeting of the Highway Research Board
  • Location: Washington District of Columbia, United States
  • Date: 1971-1-18 to 1971-1-22
• Publication Date: 1971

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 1-12
• Monograph Title: Bridges and Bridge Foundations
• Serial:
  • Highway Research Record
  • Issue Number: 354
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Axle load force; Bridges; Data reduction; Distress; Fatigue (Mechanics); Field tests; Histograms; Loads; Rural highways; Trucks; Weight
• Uncontrolled Terms: Fatigue life
• Old TRIS Terms: Loading period; Truck effects (Bridges); Types
• Subject Areas: Bridges and other structures; Highways; Motor Carriers;

Filing Info

• Accession Number: 00209551
• Record Type: Publication
• ISBN: 0309019672
• Files: TRIS, TRB
• Created Date: Dec 13 1971 12:00AM