LOADING HISTORY AND ITS EFFECTS ON HIGHWAY BRIDGES - PILOT STUDY

THE MAGNITUDE OF LOAD, STRESS, AND IMPACT AND THE DISTRIBUTION OF LOADS ON A COMPOSITE STEEL BEAM BRIDGE BEARING REGULAR TRUCK TRAFFIC WERE STUDIED ON AN 8 BEAM BRIDGE CROSS SECTION BY EQUIPPING 5 BEAMS WITH STRAIN GAGES. IN THE PILOT STUDY, 23 TRUCKS WERE INVESTIGATED IN DETAIL. COMPARISON OF TEST DATA AND DESIGN VALUES FROM AASHO SPECIFICATIONS IS REPORTED. THE DIFFERENCES BETWEEN STATIC AND DYNAMIC TRUCK RESULTS ARE NOTED. DISTRIBUTION FACTORS ARE COMPUTED FROM THE RATIOS OF INTERNAL MOMENT TO BEAM AND TOTAL EXTERNAL MOMENT. A MAXIMUM STRESS RANGE OF 2766 PSI WAS RECORDED, WHICH IS 40% OF THE DESIGN LIVE LOAD STRESS. A FINAL REPORT ON 1600 TRUCKS WILL BE PRODUCED LATER. /AUTHOR/

• Corporate Authors:

  Pennsylvania Department of Transportation

  1215 Transportation and Safety Building
  Harrisburg, PA  United States  17120

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Sankey, F C
• Publication Date: 1970-9

Subject/Index Terms

• TRT Terms: Beams; Bridges; Composite materials; Impacts; Load transfer; Loads; Stresses; Trucks
• Uncontrolled Terms: Composite beams
• Old TRIS Terms: Bridge dynamics
• Subject Areas: Bridges and other structures; Highways; Motor Carriers;

Filing Info

• Accession Number: 00207974
• Record Type: Publication
• Source Agency: Federal Highway Administration
• Files: TRIS, USDOT, STATEDOT
• Created Date: Jan 11 1971 12:00AM