FIELD STUDY OF PREDEFLECTED STEEL-CONCRETE COMPOSITE BRIDGE

TO PERMIT VERIFICATION OF DESIGN PARAMETERS AND ASSUMPTIONS GOVERNING "PREFLEX" BEAMS, FIELD TESTS WERE CONDUCTED ON A SKEWED SIMPLE-SPAN BRIDGE TO DETERMINE THE MAGNITUDE OF INITIAL AND LONG-TERM DEAD LOAD DEFLECTIONS, AND THE EXTENT OF CRACKING (IF ANY) IN THE PRECOMPRESSED CONCRETE. VERTICAL DEFLECTIONS OF THE BEAMS DURING CONTRUCTION AND UNDER SERVICE DEAD LOADS WERE COMPARED WITH THEORETICAL VALUES. ALTHOUGH THE MEASURED DEAD LOAD DEFLECTIONS WERE SLIGHTLY GREATER THAN DESIGN PREDICTIONS, THE STRUCTURE'S SHORT-TERM PERFORMANCE WAS FOUND TO BE SATISFACTORY. SURVEYS ARE TO CONTINUE FOR SIX YEARS SO THAT LONG-TERM DEFLECTION BEHAVIOR CAN BE EVALUATED. /FHWA/

• Supplemental Notes:
  • 19 PP
• Corporate Authors:

  New York State Department of Transportation

  1220 Washington Avenue
  Albany, NY  United States  12232

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Croce, C A
  • Beale, D B
• Publication Date: 1971-12

Subject/Index Terms

• TRT Terms: Composite structures; Concrete; Deflection; Static loads; Steel
• Old TRIS Terms: Precompression; Simple span
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00208043
• Record Type: Publication
• Source Agency: Federal Highway Administration
• Report/Paper Numbers: RR 3
• Files: TRIS, USDOT, STATEDOT
• Created Date: Jun 28 2003 12:00AM