ABSTRACT
SUMMARY
Methods of determining the buckling load factor for regular interbraced sets of columns and beams are developed and detailed. The equations which allow the critical load factor for any specific case to be evaluated are set out and summary charts prepared using such values. Such charts link buckling load to brace stiffness and number of columns, also allowing for brace eccentricity in some cases.
Basic in-plane buckling with linear elastic support is detailed and expanded to cases of flexural torsional buckling involving eccentricity of linear braces and the addition of rotational and torsional support. Beam systems are detailed for the cases of uniform moment and for uniform spread load applied at flanges. The charts included only present a sample of what might be assembled. The appendices contain the detailed composition of the 2×2 and 4×4 determinants from which the charts are assembled. The evaluation of these determinants by desk computer is straightforward.
