Investigations into the Flexural-Torsional Buckling Behavior of Steel Open-Section Beam-Columns

This paper is in the field of elastic flexural-torsional buckling of steel beam-columns of bisymmetric narrow-flange and wide-flange I-section shape. Investigations are focused on the derivation of the strain components and the energy equation, based on the displacement-field formulation in the defl...

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Bibliographic Details
Published inBuildings (Basel) Vol. 13; no. 2; p. 307
Main Authors Barszcz, Anna M., Gizejowski, Marian A., Papangelis, John P.
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.01.2023
Subjects
beam-column
Beam-columns
Bending moments
Boundary conditions
Deflection
Elastic buckling
elastic flexural-torsional buckling
Energy equation
energy formulation
Exact solutions
flexural-torsional buckling-limit curve
I-section
Investigations
Mechanical properties
Steel
Steel beams
New York
Germany
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Summary:This paper is in the field of elastic flexural-torsional buckling of steel beam-columns of bisymmetric narrow-flange and wide-flange I-section shape. Investigations are focused on the derivation of the strain components and the energy equation, based on the displacement-field formulation in the deflected configuration. At the same time, a review of analytical solutions based on the classical and refined energy-equations are summarized, presented and discussed. The relationship between the maximum in-plane bending moment and the compressive force of beam-columns is the main objective of this research investigation. Simple boundary conditions of end-sections free to deflect and to warp are considered, together with an arbitrary loading-pattern. The principle of superposition and the moment amplification rule for considering the second-order effects are widely used. The main conclusions are drawn in relation to the flexural-torsional resistance-evaluation design of steel beam-columns in modern design codes for steelwork.
ISSN:2075-5309
2075-5309
DOI:10.3390/buildings13020307