DIRECT BUCKLING ANALYSIS BASED STABILITY DESIGN METHOD OF STEEL STRUCTURES
Jozsef Szalai 1*
1 ConSteel Solutions Ltd., Budapest, Hungary
A new stability design method is proposed based on the results of the direct elastic linear buckling analysis (ELBA). The method has a transparent and consistent mechanical background which is the straight generalization of the traditional stability design approach for single members. The new design method covers all types of buckling modes (flexural, torsional, flexural-torsional, lateral-torsional or any interaction), which can be calculated by the direct ELBA of global structural models composed of uniform or non-uniform members with arbitrary cross-sections and support conditions and subjected to any complex loading (e.g. biaxial bending with moment gradient, direct torsion effects etc.). The performance of the method is demonstrated on a complex buckling problem of a tapered beam-column.
Overall Stability Design Method; Elastic linear buckling analysis; Buckling mode; Ayrton-Perry formula; Tapered member