RATIONAL DESIGN OF LIGHT GAGE BEAMS

A METHOD FOR ANALYZING LIGHT GAGE COLD-FORMED STEEL BEAMS WITH BUCKLED FLANGES IN SITUATIONS WHEN THE BENDING MOMENT CHANGES SIGN IS DESCRIBED. IF THE BENDING MOMENT CHANGES SIGN, THE STANDARD PROCEDURE USING THE SAME EFFECTIVE WIDTH FOR EACH BUCKLED FLANGE OVER THE WHOLE LENGTH OF THE BEAM BREAKS DOWN. INSTEAD, SEPARATE EFFECTIVE WIDTHS ARE ESTABLISHED FOR THE COMPRESSION FLANGES OF EACH PART OF THE BEAM WITH A BENDING MOMENT OF THE SAME SIGN. THE POINTS OF ZERO BENDING MOMENT ARE NOT KNOWN A PRIORI AND THEIR DETERMINATION IS PART OF THE SOLUTION. THE GOVERNING EQUATIONS ARE HIGHLY NONLINEAR AND HAVE TO BE SOLVED BY A NUMERICAL PROCESS OF SUCCESSIVE APPROMINATIONS. THE APPROMXIMATIONS WERE FOUND TO CONVERGE VERY RAPIDLY. /ASCE/

• Supplemental Notes:
  • Vol 96, No ST 7, PROC PAPER 7421, PP 1535-1541, 3 FIG,
• Authors:
  • Bleustein, J L
  • Gjelsvik, A
• Publication Date: 1970-7

Media Info

• Serial:
  • Journal of the Structural Division
  • Publisher: American Society of Civil Engineers

Subject/Index Terms

• TRT Terms: Approximation (Mathematics); Beams; Bending; Buckling; Flanges; Mathematical analysis; Metal working; Steel; Structural analysis; Structural supports
• Uncontrolled Terms: Compression members
• Old TRIS Terms: Metal bending
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00209260
• Record Type: Publication
• Files: TRIS
• Created Date: Aug 26 1970 12:00AM