PLASTIC BEHAVIOR OF CONTINUOUS COMPOSITE BEAMS

A PREVIOUS PAPER DESCRIBED MEHTODS FOR PREDICTING THE BEHAVIOR OF CROSS-SECTIONS OF COMPOSITE BEAMS IN BENDING, IN WHICH THE EFFECTS OF SLIP WERE NEGLECTED. A COMPARISON OF THE PREDICTIONS WITH THE RESULTS OF TESTS ON FOUR THREE- SPAN CONTINUOUS COMPOSITE BEANS, IN WHICH SLIP STRAIN /DEFINED AS THE DIFFERENCE BETWEEN THE STRAINS IN THE STEEL AND THE CONCRETE AT THE INTERFACE/ WAS PRESENT AT ALL THE CRITICAL SECTIONS, SHOWS THAT THE METHODS ARE STILL APPLICABLE. THE BEHAVIOR OF STRAIN-SOFTENING HINGES IS RELATED TO THE STRESS/STRAIN CURVE FOR CONCRETE, AND THE PROBLEM OF SUDDEN FAILURE BY ENERGY RELEASE IS CONSIDERED. IT IS CONCLUDED THAT THE RESULTS PRESENTED IN THIS PAPER JUSTIFY THE USE OF THE SIMPLE PLASTIC THEORY FOR THE DESIGN OF MOST TYPES OF CONTINUOUS COMPOSITE BEAMS, PROVIDED THAT SECONDARY FAILURES CAN BE PREVENTED.

• Supplemental Notes:
  • Vol32, No6837, PP180-197, 12FIG, 2TAB, 17REF
• Authors:
  • Barnard, P R
  • Johnson, R P
• Conference:
  • Inst Civil Engineers Proc London /UK/
• Publication Date: 1965-10

Subject/Index Terms

• TRT Terms: Alternatives analysis; Beams; Behavior; Bending; Composite structures; Concrete; Continuous structures; Deformation curve; Design; Failure; Hinges; Plasticity; Strain (Mechanics); Testing
• Uncontrolled Terms: Continuous beams
• Old TRIS Terms: 3-Span beams; Plastic theory; Strains
• Subject Areas: Bridges and other structures; Design; Highways;

Filing Info

• Accession Number: 00208141
• Record Type: Publication
• Source Agency: Road Research Laboratory /UK
• Files: TRIS
• Created Date: Jul 31 1974 12:00AM