INTERACTION BETWEEN ELASTIC BUCKLING AND PLASTIC COLLAPSE - A STUDY OF THE FAILURE OF BEAM-COLUMNS

Failure of beam-columns subjected to axial compression, transverse loading, and unequal end moments, is investigated. A formula is proposed to predict the failure load of such beam-columns. Derivation of the formula is based on the concept of interaction between the two modes of failure, i.e. elastic buckling and plastic collapse of the beam-column. In the formula, a set of imperfection parameters is included. These parameters will take into account the effects of initial deformation, residual stresses, and the spread of plasticity in the beam-column. Each parameter was determined by interpolation from theoretical solutions given for the particular case concerned. Subsequent application of the formula to other more general cases shows that good agreement with results obtained either theoretically or experimentally can be achieved. With the imperfection parameters suitably chosen, the proposed formula can be used to predict failure loads in design. (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00392553
• Corporate Authors:

  Institution of Structural Engineers

  11 Upper Belgrave Street
  London,   United Kingdom  SW1X 8BH
• Authors:
  • Ho, D
• Publication Date: 1983-12

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 79-87
• Serial:
  • Structural Engineer. Part B
  • Volume: 61B
  • Issue Number: 4
  • Publisher: Institution of Structural Engineers
  • ISSN: 0039-2553

Subject/Index Terms

• TRT Terms: Axial compression; Axial loads; Beams; Breaking loads; Buckling; Columns; Compression; Deformation; Failure; Forecasting; Loads; Mathematical models; Mechanical elasticity; Plasticity; Residual stress
• Uncontrolled Terms: Axial; Transverse; Transverse loading
• ITRD Terms: 6405: Axis; 3472: Beam; 3434: Bridge pier; 5522: Buckling; 5532: Compression; 5912: Elasticity; 5520: Failure; 132: Forecast; 5567: Load; 6473: Mathematical model; 5922: Plasticity; 9081: Transverse
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00382485
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: Apr 30 1984 12:00AM