VARIABLES AFFECTING THE NEGATIVE MOMENT BEHAVIOR OF COMPOSITE BEAMS

SIX COMPOSITE STEEL-CONCRETE BEAMS WERE TESTED UNDER NEGATIVE BENDING MOMENTS (SLABS IN TENSION). THE PURPOSE WAS TO EVALUATE THE EFFECT OF CHANGING: (1) THE PERIMETER RATIO (R) OF THE LONGITUDINAL REINFORCING BARS. (RATIO OF PERIMETER TO AREA OF ALL BARS IN THE SLAB CROSS-SECTION); (2) THE REINFORCEMENT RATIO (P) OF THE SLAB. (RATIO OF AREA OF LONGITUDINAL REINFORCEMENT TO THE AREA OF THE SLAB CROSS- SECTION); AND (3) THE FREE SLAB LENGTH (D'/D). (RATIO OF THE LENGTH OF SLAB WITHOUT SHEAR CONNECTORS TO THE LENGTH BETWEEN THE DEAD LOAD POINTS OF INFLECTION). RESULTS SHOWED THAT PARAMETER (1) WAS NOT IMPORTANT, BUT THAT PARAMETERS (2) AND (3) CAUSED MARKED DIFFERENCES IN SLAB CRACKING BEHAVIOR. /AUTHOR/

• Corporate Authors:

  Pennsylvania Department of Transportation

  1215 Transportation and Safety Building
  Harrisburg, PA  United States  17120

  Lehigh University

  Bethlehem, PA  United States  18015

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • GARCIA, I
  • Daniels, J H
• Publication Date: 0

Subject/Index Terms

• TRT Terms: Beams; Bending moments; Bridge design; Bridges; Composite materials; Concrete bridges; Fracture mechanics; Material reinforcement; Structural design
• Uncontrolled Terms: Composite beams
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00208039
• Record Type: Publication
• Source Agency: Federal Highway Administration
• Report/Paper Numbers: Study No 68-28
• Files: TRIS, USDOT, STATEDOT
• Created Date: Mar 27 1972 12:00AM