IMPORTANCE OF BEAM PROPERTIES ON CONCRETE COLOUMN BEHAVIOR

AN ESTABLISHED COMPUTER ANALYSIS WAS USED TO TRACE THE COLUMN AND BEAM BEHAVIOR UP TO FAILURE: (1) IN UNBRACED FRAMES UNDER LATERAL AND VERTICAL LOADS; (2) IN BRACE FRAMES WITH COLUMNS BENT IN SINGLE CURVATURE. THE STEEL RATIO IN THE BEAMS PROVED TO BE ONE OF THE MOST IMPORTANT VARIABLES INFLUENCING THE COLUMN STRENGTH. BEAMS WITH MUMIMUM REINFORCEMENT WERE VERY FLEXIBLE IN RESTRAINING THE ENDS OF THE COLUMNS AND LED TO COLUMN FAILURE AT LOW LOADS. IN MANY CASES THE BEAMS HINGED TO PERMIT FRAME COLLAPSE REGARDLESS OF STIFFNESS OF THE COLUMNS. BEAMS WITH HEAVY REINFORCEMENT LED TO GREATLY INCREASED COLUMN STRENGTH. ONLY A VERY LIMITED ECCENTRICITY COULD BE INTRODUCED INTO A COLUMN FROM BEAMS WITH LIGHT REINFORCEMENT. POOR JUDGMENTS AS TO COLUMN STRENGTHS CAN RESULT FROM FAILURE TO INCLUDE SOME RECOGNITION OF THE BEAM REINFORCEMENT IN FRAME ANALYSIS. /AUTHOR/

• Supplemental Notes:
  • Vol 67, No 10, PP 808-815, 7 FIG, 5 REF, 1 APP
• Authors:
  • Pagay, S N
  • Ferguson, P M
  • Breen, J E
• Publication Date: 1970-10

Media Info

• Serial:
  • Am Concrete Inst Journal & Proceedings

Subject/Index Terms

• TRT Terms: Beams; Columns; Computers; Concrete; Failure; Loads; Material reinforcement; Steel; Strength of materials
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00209348
• Record Type: Publication
• Files: TRIS
• Created Date: Dec 7 1970 12:00AM