COMPARISON OF BRIDGE STRESS HISTORY RESULTS WITH DESIGN- RELATED ANALYSES

SIX BRIDGES AT THREE BRIDGE SITES LOCATED NEAR A WEIGHT STATION WERE INVESTIGATED WITH RESPECT TO THE STRESS RANGES CAUSED BY NORMAL TRAFFIC. THE SUMMATION OF THESE STRESS RANGES FOR EACH BRIDGE IS PRESENTED, AND COMPARISONS ARE MADE WITH CALCULATED STRESSES. THE MAIN OBJECTIVE OF THE STRESS COMPARISONS IS TO INTRODUCE A WORKABLE METHOD FOR THE DESIGN ENGINEER TO USE IN PREDICTING PROBABLE MAXIMUM AND "TYPICAL" GIRDER STRESSES DUE TO NORMAL TRAFFIC. TWO AASHO DESIGN VEHICLES ARE CONSIDERED IN THE ANALYSIS, AND THE STRESS RESULTING FROM THIS LOAD, CONSIDERING EQUAL DISTRIBUTION OF THE MOMENT TO EACH GIRDER, WAS SHOWN TO EXCEED ALMOST ALL STRESS RANGES MEASURED IN THE FIELD. ONE-HALF OF THIS STRESS COMPARES FAVORABLE WITH A SIGNIFICANT NUMBER OF STRESS RANGES ENCOUNTERED ON THE MOST HIGHLY STRESSED GIRDER. THIS TYPE OF ANALYSIS IS INTENDED TO FURNISH A METHOD FOR ENABLING THE DESIGN ENGINEER TO UTILIZE THE RESULTS OF THE MANY STRESS HISTORY RESEARCH EFFORTS CURRENTLY IN PROGRESS OR RECENTLY COMPLETED. THE RESULTS PRESENTED ARE FOR PARTICULAR BRIDGES AND SHOULD NOT BE USED GENERALLLY UNTIL ADDITIONAL VERIFICATION IS OBTAINED BY USING THE STRESS HISTORY RESULTS OF OTHER RESEARCHERS. /AUTHOR/

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 51-56
  • Monograph Title: Bridge evaluation and analysis
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00209905
  • Record Type: Publication
  • ISBN: 030902157X
  • Files: TRIS, TRB
  • Created Date: Aug 5 1973 12:00AM