STATIC BEHAVIOR OF CONTINUOUS COMPOSITE BEAMS

THE RESULTS OF ULTIMATE STRENGTH TESTS OF FOUR CONTINUOUS COMPOSITE STEEL-CONCRETE BEAMS ARE PRESENTED. EACH BEAM HAD TWO EQUAL SPANS OF 25 FEET AND CONSISTED OF A 60 INCH WIDE BY 6 INCH REINFORCED CONCRETE SLAB CONNECTED TO A 21WF62 A36 STEEL BEAM WITH 3/4 INCH DIAMETER STUD SHEAR CONNECTORS. THE BEAMS HAD BEEN SUBJECTED TO FATIGUE TESTS PRIOR TO THE ULTIMATE STRENGTH TESTS. SOME CONCLUSIONS BASED ON THE RESULTS ARE: (1) SHEAR CONNECTORS DESIGNED ON THE BASIS OF THE STATIC AND FATIGUE REQUIREMENTS WILL PROVIDE SUFFICIENT SHEAR CONNECTION TO DEVELOP THE ULTIMATE FLEXURAL STRENGTH OF THE MEMBER, (2) PLASTIC ANALYSIS AND ULTIMATE STRENGTH THEORY CAN BE USED FOR THE DESIGN OF CONTINUOUS COMPOSITE BEAMS, AND (3) LOCAL FLANGE AND WEB BUCKLING NEAR THE INTERIOR SUPPORTS LIMITS THE ULTIMATE LOAD CAPACITY OF THE MEMBER. FURTHER ANALYTICAL AND EXPERIMENTAL STUDIES ARE REQUIRED TO ESTABLISH DESIGN RULES WHICH WOULD ALLOW THE FULL NEGATIVE PLASTIC HINGE TO DEVELOP PRIOR TO FLANGE AND WEB LOCAL BUCKLING. /BPR/

• Supplemental Notes:
  • Hpr-pr-1/2/, EDP CODE 411
• Corporate Authors:

  Lehigh University

  Bethlehem, PA  United States  18015

  New York State Department of Transportation

  1220 Washington Avenue
  Albany, NY  United States  12232
• Authors:
  • Daniels, J H
  • Fisher, J W
• Publication Date: 1967-3

Subject/Index Terms

• TRT Terms: Beams; Composite materials; Continuous structures; Fasteners; Fatigue tests; Plastic analysis; Reinforced concrete; Shear reinforcement; Static tests; Steel; Structural design; Ultimate strength
• Uncontrolled Terms: Composite beams; Continuous beams; Shear connectors
• Old TRIS Terms: Plastic analysis (Structural)
• Subject Areas: Bridges and other structures; Highways; Materials;

Filing Info

• Accession Number: 00207846
• Record Type: Publication
• Source Agency: Bureau of Public Roads /US
• Files: TRIS, STATEDOT
• Created Date: Dec 15 1994 12:00AM