FUNCTIONAL RELATIONSHIPS BETWEEN ACTUAL TRUCK AND AASHO DESIGN LOADINGS FOR SIMPLE SPAN BRIDGES

THE MAXIMUM MOMENT AND SHEAR FORCE ARE USED AS A MEASURE OF OVERLOAD FOR SIMPLE SPAN BRIDGES. OVERLOAD FRACTIONS ARE DEFINED. THESE ARE RATIOS WHICH INDICATE THE AMOUNTS BY WHICH THE MAXIMUM DESIGN MOMENTS AND SHEARS /DEAD PLUS LIVE LOAD/ ARE CHANGED WHEN TRUCKS OF VARIOUS CONFIGURATIONS AND LOAD LIMITS CROSS SIMPLE SPAN BRIDGES. THE DESIGN LIVE LOADS CONSIDERED ARE THE AASHO H AND HS LOADING SCHEMES. FUNCTIONAL RELATIONSHIPS WHICH ALLOW THE SYSTEMATIC CALCULATION OF OVERLOAD ARE PRESENTED. THE CONCEPT OF CRITICAL SPAN LENGTH IS UTILIZED. THE EFFECTS OF TRUCKS ON THE MAGNITUDES OF MOMENTS AND SHEARS ARE GENERALIZED BY THE USE OF CERTAIN TRUCK PARAMETERS. /AUTHOR/

• Supplemental Notes:
  • Report Rr 129, 37 PP, 14 FIG, 9 REF
• Corporate Authors:

  Ontario Department of Highways

  1201 Wilson Avenue
  Toronto, Ontario M3M 1J8,   Canada 
• Authors:
  • Tamberg, K G
  • Jung, F W
• Publication Date: 1967-2

Subject/Index Terms

• TRT Terms: Bridge members; Bridges; Critical values; Design load; Engineering moments; Length; Load limits; Oversize loads; Shear stress; Trucks
• Uncontrolled Terms: Bridge spans; Overloads; Shear forces
• Old TRIS Terms: Moments; Simple span
• Subject Areas: Bridges and other structures; Highways; Motor Carriers;

Filing Info

• Accession Number: 00208176
• Record Type: Publication
• Source Agency: CANADIAN GOOD ROADS ASSOCIATION
• Files: TRIS
• Created Date: Aug 23 1994 12:00AM