STATIC BEHAVIOR OF CONTINUOUS-COMPOSITE-BOLTED BEAMS

A FURTHER INVESTIGATION IS DESCRIBED OF THE USE OF HIGH STRENGTH BOLTS FOR A MORE RIGID CONNECTION BETWEEN A CONCRETE SLAB AND A STEEL BEAM. THIS INVESTIGATION COVERS THE BEHAVIOR OF THE NEGATIVE MOMENT REGION OF CONTINUOUS - COMPOSITE MEMBERS LOADED TO FAILURE. EACH OF THE THREE MEMBERS TESTED CONSISTED OF A SIMPLY-SUPPORTED SPAN CONTINUING INTO A CANTILEVER. LOAD-DEFLECTION CURVES, STRAIN PROFILES, AND SLIP DISTRIBUTION CURVES WERE USED IN INVESTIGATING THE COMPOSITE BEHAVIOR OF THE MEMBERS. PREDICTED LOADS WERE COMPARED WITH THE ACTUAL LOADS OBTAINED. SIX TENSION - PUSHOUT SPECIMENS WERE ALSO INVESTIGATED. LOAD-SLIP CURVES WERE DETERMINED AND COMPARED WITH THOSE OBTAINED FROM THE COMPOSITE MEMBERS. FOLLOWING ARE SOME OF THE CONCLUSIONS MADE FROM THIS INVESTIGATION: (1) BECAUSE OF THE NATURE OF THE LOAD-SLIP PER BOLT DATA FOR THE COMPOSITE MEMBERS,A CONCLUSION FOR THE VALIDITY OF USING TENSION PUSHOUTS TO PREDICT CONNECTOR BEHAVIOR IN A MEMBER CAN NOT BE JUSTIFIED, (2) FOR THOSE MEMBERS WITH CONNECTORS OVER THEIR NEGATIVE MOMENT REGIONS, THERE WAS PRACTICALLY NO SLIP AT THEIR WORKING LOADS, (3) SIMPLE ULTIMATE STRENGTH THEORY CAN BE USED TO SATISFACTORILY PREDICT THE ULTIMATE CAPACITY IN THE NEGATIVE MOMENT REGION OF MEMBERS WITH CONNECTORS OVER THE NEGATIVE MOMENT REGIONS, AND (4) THE ELIMINATION OF CONNECTORS OVER THE NEGATIVE MOVEMT REGION OF THE COMPOSITE MEMBER REDUCED THE WORKING THE FIRST YIELDING LOADS OF THAT MEMBER BY APPROXIMATELY 15%. /AUTHOR/

• Record URL:
  https://spexternal.modot.mo.gov/sites/cm/CORDT/MCHRP69-03.pdf
• 
• Supplemental Notes:
  • Hpr-1 (7), PART 2, 68-4
• Corporate Authors:

  University of Missouri, Columbia

  1205 University Avenue
  Columbia, MO  United States  65201

  Missouri State Highway Commission

  State Highway Building
  Jefferson City, MO  United States  65101

  Bureau of Public Roads /US

  400 7th Street, SW
  Washington, DC  United States  20590
• Authors:
  • Dallam, L N
  • Gaudini, P
• Publication Date: 1969

Subject/Index Terms

• TRT Terms: Beams; Bolts; Composite construction; Concrete; Continuous structures; Deflection; Fasteners; Loads; Slabs; Steel; Tension; Ultimate strength
• Uncontrolled Terms: Continuous beams
• Old TRIS Terms: Connectors; High strength bolts
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00207904
• Record Type: Publication
• Source Agency: Bureau of Public Roads /US
• Files: TRIS, STATEDOT
• Created Date: May 5 1994 12:00AM