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Budownictwo i Inżynieria Środowiska

Budownictwo i Inżynieria Środowiska
2017.135, DOI: 10.7862/rb.2017.135

ON LTB RESISTANCE ASSESSMENT OF PRISMATIC I-SECTION BEAMS ACCORDING TO EUROCODE 3

Marian GIŻEJOWSKI, Zbigniew STACHURA

DOI: 10.7862/rb.2017.135

Abstract

The lateral-torsional buckling resistance (LTB resistance) of beams bent about the major axis is dealt in Eurocode 3 twofold: a) directly in clause 6.3.2, referring to the lateral-torsional buckling curves of the so-called General case in 6.3.2.2 and of Special case of rolled sections and equivalent welded sections in 6.3.2.3, and indirectly in 6.3.3 as a special case of beam-columns in bending and compression (provided that the axial force and the bending moment about z-z axis vanish). In the latter, interaction factors are evaluated either from Annex A (alternative method 1) or from Annex B (alternative method 2). This paper discusses the issue of interrelations of mentioned above direct and indirect approaches for the evaluation of the lateral-torsional resistance of beams under moment gradient.

Full text (pdf)

References

[1] Boissonnade A., Jaspart J.-P., Muzeau J.-P., Villette M.: New interaction formulae for beam-columns in Eurocode 3: The French–Belgian approach, Journal of Constructional Steel Research 60 (2004), pp. 421-431.

[2] Gizejowski M.A., Stachura Z., Uziak J.: Elastic flexural-torsional buckling of beams and beam-columns as a basis for stability design of members with discrete rigid restraints. In: Insights and Innovations in Structural Engineering, Mechanics and Computation (ed. A. Zingoni), London, Taylor & Francis Group 2016, pp. 261-262,    e-book on CD, pp. 738-744.

[3] Gizejowski M.A., Stachura Z., Szczerba R.B., Gajewski M.D.: Numerical study of buckling resistance of steel I-section members. In: Insights and Innovations in Structural Engineering, Mechanics and Computation (ed. A. Zingoni), London, Taylor & Francis Group 2016, pp. 267-268, e-book on CD, pp. 758-763.

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About this Article

TITLE:
ON LTB RESISTANCE ASSESSMENT OF PRISMATIC I-SECTION BEAMS ACCORDING TO EUROCODE 3

AUTHORS:
Marian GIŻEJOWSKI (1)
Zbigniew STACHURA (2)

AUTHORS AFFILIATIONS:
(1) Warsaw University of Technology
(2) Warsaw University of Technology

JOURNAL:
Budownictwo i Inżynieria Środowiska
2017.135

KEY WORDS AND PHRASES:
steel prismatic beams, I-section, lateral-torsional buckling, direct resistance evaluation, indirect resistance evaluation

FULL TEXT:
http://doi.prz.edu.pl/pl/pdf/biis/877

DOI:
10.7862/rb.2017.135

URL:
http://dx.doi.org/10.7862/rb.2017.135

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