APPROXIMATE INELASTIC BUCKLING MOMENTS FOR DETERMINATE I-BEAMS

A method for estimating the inelastic buckling moment of a simply supported I-Beam under a moment gradient is proposed. The concept of the stiffness modification factor j, is introduced. The moment capacity is obtained from the elastic buckling moment and from the stiffness modification factor, the latter being related to the reduced lateral bending stiffness at the maximum moment or critical end of the partially yielded beam. Comparison of results with accurate computer curves shows that the proposed method gives good estimates of inelastic buckling moments. /Author/TRRL/

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  • Corporate Authors:

    Institution of Engineers

    Science House, Gloucester and Essex Streets
    Sydney,   Australia 

    Institution of Engineers

    11 National Circuit
    Barton, A.C.T.,   Australia 
  • Authors:
    • DUX, P F
    • Kitipornchai, S
  • Publication Date: 1978

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Filing Info

  • Accession Number: 00196696
  • Record Type: Publication
  • Source Agency: ARRB Group Limited
  • Files: ITRD, TRIS
  • Created Date: Oct 17 1979 12:00AM