INELASTIC BEHAVIOUR OF ROTATIONALLY RESTRAINED COLUMNS UNDER BIAXIAL BENDING

A NUMERICAL PROCEDURE TO DETERMINE THE LOAD-DEFORMATION RESPONSE, UP TO THE POINT OF INSTABILITY, OF RESTRAINED STEEL BEAM-COLUMNS UNDER BIAXIAL BENDING IS PRESENTED IN THIS PAPER. THE ROTATIONAL RESTRAINTS AND THE END LOADS NEED NOT BE SYMMETRIC. THE MEMBER IS PRISMATIC, ORIGINALLY STRAIGHT AND UNTWISTED. THE INFLUENCE OF RESIDUAL STRAINS AS WELL AS THE WARPING STRAINS THAT RESULT FROM THE TWISTING OF THE CROSS-SECTION OF COLUMN ARE INCLUDED IN THE ANALYSIS. THE EQUILIBRIUM EQUATIONS ARE WRITTEN WITH RESPECT TO AN ARBITRARY SYSTEM OF CO-ORDINATE AXES. THIS WAY THE SHIFT IN THE SHEAR CENTRE, AND THE SHIFT AND ROTATION OF PRINCIPAL AXES OF THE ELASTIC CORE, AS THE YIELDING OF THE CROSS- SECTION PROGRESSES IS TAKEN CARE OF AUTOMATICALLY. CORRELATION WITH EXISTING EXPERIMENTAL RESULTS SHOWS THE VALIDITY OF THE PROPOSED METHOD OF ANALYSIS. /AUTHOR/

  • Availability:
  • Corporate Authors:

    Institution of Structural Engineers

    11 Upper Belgrave Street
    London,   United Kingdom  SW1X 8BH
  • Authors:
    • Vinnakota, S
    • Aoshima, Y
  • Publication Date: 1974-7

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 245-255
  • Serial:
    • Structural Engineer
    • Volume: 52
    • Issue Number: 7
    • Publisher: Institution of Structural Engineers
    • ISSN: 1466-5123

Subject/Index Terms

Filing Info

  • Accession Number: 00080700
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Mar 26 1975 12:00AM