INELASTIC BUCKLING ON SINGLE ANGLE, TEE AND DOUBLE ANGLE STRUTS

The inelastic flexural and flexural-torsional buckling of axially-loaded, pinned end single angle, tee and double angle struts are investigated theoretically. The calculated inelastic buckling loads are based on the tangent modulus concept, assuming idealised residual stress distributions in the strut sections. In the inelastic range, although the elastic flexural-torsional buckling loads for some struts are less than the elastic flexural buckling loads, results show that the inelastic buckling loads of the struts are not at all influenced by nor related to the elastic flexural- torsional buckling loads. It is found flexural buckling mode is the dominant failure mode for most of the strut shapes, except for single unequal angles and for tees and double angles whose radii of gyration ratios, r (sub x)/r (sub y) are greater than 1.0. Experimental results compare well with the ultimate strength curves, except for tee struts in which experimental buckling loads are consistently lower than the theoretical predictions. (Author/TRRL)

• Corporate Authors:

  University of Queensland

  Department of Civil Engineering
  Brisbane, Queensland  Australia  4072
• Authors:
  • Kitipornchai, S
  • Lee, H W
• Publication Date: 1984-9

Media Info

• Features: Figures; References; Tables;
• Pagination: 28 p.

Subject/Index Terms

• TRT Terms: Angularity; Axis; Beams; Buckling; Cross sections; Deflection; Deformation; Failure; Flexure; Loads; Mathematical models; Mechanical elasticity; Shear strength; Size; Standards; Stiffness; Struts; Test procedures; Thinness; Torsion; Ultimate strength
• Uncontrolled Terms: Angles; Inelastic deformation; Slenderness; Transverse
• ITRD Terms: 6427: Angle; 6405: Axis; 3472: Beam; 5522: Buckling; 6404: Cross section; 5586: Deflection; 9014: Dimension; 5912: Elasticity; 5520: Failure; 5567: Load; 6473: Mathematical model; 5531: Shear; 5513: Slenderness; 187: Specification (standard); 5931: Stiffness; 6288: Test method; 5512: Torsion; 9081: Transverse
• Subject Areas: Bridges and other structures; Design; Geotechnology; Highways; Materials; I24: Design of Bridges and Retaining Walls; I34: Steels and Metals;

Filing Info

• Accession Number: 00394819
• Record Type: Publication
• Source Agency: ARRB
• Report/Paper Numbers: Monograph
• Files: ITRD, TRIS, ATRI
• Created Date: Jul 31 1985 12:00AM