COMPARISONS BETWEEN INDUCED GIRDER STRESSES AND CORRESPONDING VEHICLE WEIGHTS

THE REPORT PRESENTS THE PARTIAL RESULTS OF 4 LOADING HISTORY FIELD TESTS ON 4 SIMPLE-SPAN, COVER-PLATED BRIDGES IN MARYLAND. THE RESULTING STRESS-RANGE DATA ARE COMPARED TO THE STIFFNESS OF A TYPICAL GIRDER AND THE CORRESPONDING VEHICLE GROSS WEIGHTS. THE VEHICLE GROSS-WEIGHT DATA ARE CATEGORIZED ACCORDING TO 5 TRUCK CLASSIFICATIONS. A LINEAR REGRESSION ANALYSIS OF THE DATA RESULTED IN A SERIES OF EQUATIONS THAT WILL PERMIT EVALUATION OF FIELD-INDUCED STRESS RANGES OF A TYPICAL GIRDER THAT OCCUR AT MIDSPAN, ON COVER PLATE END, AND OFF COVER-PLATE END AND ARE DUE TO STANDARD TRUCK TYPES OF KNOWN GROSS WEIGHTS. THESE EQUATIONS WERE THEN APPLIED, IN CONJUNCTION WITH A DAMAGE THEORY AND ASSUMED TRUCK GROSS WEIGHT DISTRIBUTIONS, TO ESTIMATE THE BRIDGE LIVES. /AUTHOR/

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 21-26
  • Monograph Title: Loading history of bridges
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00209704
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Aug 7 1972 12:00AM