The Structural Engineer > Archive > Volume 52 (1974) > Issues > Issue 7 > Inelastic Behaviour of Rotationally Restrained Columns under Biaxial Bending
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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. S. Vinnakota and Y. Aoshima

Author(s): Vinnakota, S;Aoshima, Y

Keywords: columns;stability;steel;deflection;torsion;analysis