SLAB BEHAVIOR OF A PRESTRESSED CONCRETE I-BEAM BRIDGE-BARTONSVILLE BRIDGE

THE TEST STRUCTURE WAS A MULTI-SPAN, SIMPLY SUPPORTED BRIDGE CONSISTING OF A CAST-IN-PLACE CONCRETE SLAB SUPPORTED BY FIVE PRECAST PRESTRESSED CONCRETE I-BEAMS LATERALLY SPACED AT 8 FEET. THE TEST SPAN WAS 68 FEET 6 INCHES IN LENGTH. THE TESTING PROGRAM CONSISTED OF THE CONTINUOUS RECORDING OF SURFACE STRAINS AT VARIOUS LOCATIONS ON THE SLAB, AS THE TEST VEHICLE WAS DRIVEN OVER THE SPAN AT VARIOUS SPEEDS. THE PRINCIPAL OBJECTIVE WAS TO DEVELOP INFORMATION ON THE MAGNITUDE OF SLAB STRAINS PRODUCED BY LIVE LOADS SIMULATED BY THE AASHO STANDARD TRUCK. THE MEASURED STRAINS WERE USED TO COMPUTE STRESSES AND MOMENTS IN THE SLAB. IT WAS FOUND THAT THE SLAB MOMENTS DERIVED FROM THE FIELD MEASUREMENTS WERE SUBSTANTIALLY SMALLER THAN THOSE USED IN THE DESIGN OF THE SLAB, AND THAT THE STRESSES PRODUCED WERE CONSIDERABLY LESS THAN THOSE ANTICIPATED IN THE DESIGN. /AUTHOR/

• Corporate Authors:

  Lehigh University

  Bethlehem, PA  United States  18015

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590

  Pennsylvania Department of Transportation

  1215 Transportation and Safety Building
  Harrisburg, PA  United States  17120
• Authors:
  • WEGMULLER, A W
  • VanHorn, D A
• Publication Date: 0

Subject/Index Terms

• TRT Terms: Cast in place structures; Concrete bridges; I beams; Live loads; Prestressed concrete; Slabs; Strain (Mechanics); Stresses
• Old TRIS Terms: Strains
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00208015
• Record Type: Publication
• Source Agency: Federal Highway Administration
• Report/Paper Numbers: Study No 67-12
• Files: TRIS, USDOT, STATEDOT
• Created Date: Feb 15 1972 12:00AM