ELASTIC STABILITY OF CONTINUOUS BEAMS

ALTHOUGH THE FLEXURAL-TORSIONAL BUCKLING OF SIMPLY SUPPORTED I-BEAMS HAS BEEN INVESTIGATED EXTENSIVELY, BOTH THEORETICALLY AND EXPERIMENTALLY, COMPARATIVELY FEW STUDIES HAVE BEEN MADE OF CONTINUOUS BEAMS. THE THEORETICAL WORK ON THIS SUBJECT IS SUMMARIZED, AND A SERIES OF EXPERIMENTAL STUDIES OF SMALL SCALE CONTINUOUS I-BEAMS DESCRIBED. THIS INCLUDES 86 BUCKLING TESTS ON FOUR TWO-SPAN BEAMS AND THREE SYMMETRICAL THREE-SPAN BEAMS, AND A NUMBER OF SUBSIDIARY TESTS. THE MODEL BEAMS WERE OF ALUMINUM, AND TWO DIFFERENT CROSS SECTIONS WERE TESTED. THE EXPERIMENTAL RESULTS ARE COMPARED WITH THE THEORETICAL PREDICTIONS OF THE ELASTIC CRITICAL LOADS AND GOOD AGREEMENT IS DEMONSTRATED FOR MOST CASES. THESE EXPERIMENTAL RESULTS SUPPORT A SIMPLE APPROXIMATE ANALYSIS OF THE ELASTIC INTERACTION BUCKLING OF CONTINUOUS BEAMS IN WHICH THREE SIGNIFICANT COMBINATIONS OF CRITICAL LOADS ARE USED TO PREDICT THE FULL RANGE OF CRITICAL LOAD COMBINATIONS. /ASCE/

• Supplemental Notes:
  • Vol 95, No ST 6, PROC PAPER 6632, PP 1295-1312, 18 FIG,
• Authors:
  • Trahair, N S
• Publication Date: 1969-6

Media Info

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

Subject/Index Terms

• TRT Terms: Aluminum; Approximation (Mathematics); Beams; Buckling; Continuous structures; Critical values; Elastic analysis; I beams; Loads; Testing
• Uncontrolled Terms: Continuous beams; Critical loads; Model tests; Structural stability
• Old TRIS Terms: Elastic analysis (Structural)
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00209047
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 29 1994 12:00AM