FAILURE MODES DETERMINING THE RESISTANCE AND THE STABILITY OF STEEL CELLULAR BEAMS

Effective failure modes relating to the steel cellular beams that nowadays have
become widely used as a part of a building load-bearing structure are identified
and discussed in detail. They are presented as those being critical both due
to the structural resistance evaluation and due to the stability assessment.
In the first case, the ultimate bending moment resistance of a whole beam
in the presence of shear is estimated as well as the resistance of the beam tee section
located at mid-length of the web-opening. Regarding to the verification
of beam stability not only the lateral-torsional buckling is taken into consideration
but also the shear buckling of the beam web and even the local instability
of a web-post. Finally, the risk of the rupture of a welded joint located in a beam
web-post is assessed to check if it is so small that it can be accepted by the building
user.

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[1] Voříšek V., Chladný E., Melcher J.: Prvky kovových konštrukcií, Alfa – Vydavateľstvo
Technickej a Ekonomickej Literatúry, Bratislava, 1983,
[2] Łubiński M., Filipowicz A., Żółtowski W.: Konstrukcje metalowe. Część 1, Arkady,
Warszawa, 2000,
[3] Espion B.: The Vierendeel bridge at its heyday: Rational design, experiments and brittle
failure, in: Nuts & bolts of construction history, vol. 3, p. 253-260, Picard, Paris, 2012,
[4] Faltus F.: Prolamované nosníky. Technický obzor, vol. 50, 1942, p. 175-180
and 387-389,
[5] Chung K.F., Liu T.C.H., Ko A.C.H.: Investigation on Vierendeel mechanism in steel
beams with large web openings, Journal of Constructional Steel Research, vol. 57,
p. 467-490, 2001,
[6] Panedpojaman P., Rongram T.: Design equations for Vierendeel bending of steel
beams with circular web openings, Proceedings of the World Congress on Engineering
(WCE 2014), vol. II, July 2-4, 2014, London, UK,
[7] Łubiński M., Bródka J.: Lekkie konstrukcje stalowe, Arkady, Warszawa, 1978,
[8] Bródka J., Broniewicz M.: Projektowanie konstrukcji stalowych według Eurokodów,
PWT, Rzeszów, 2013,
[9] Gere J. M.: Mechanics of materials, Sixth Edition, Thomson Learning Inc., Brooks/Cole,
2004.
[10] Redwood R. G.: Design of I-beams with web perforations, in: Narayanan R.: Beam
and beam-columns: stability and strength, Applied Science Publishers, London and New
York, 1983,
[11] EN 1993-1-1:2005, Eurocode 3. Design of steel structures. Part 1-1: General rules and
rules for buildings,
[12] Müller C., Hechler O., Bureau A., Bitar D., Joyeux D., Cajot L. G., Demarco T., Lawson
R. M., Hicks S., Devine P., Lagerqvist O., Hedman-Pétursson E., Unosson E.,
Feldmann M.: Large web openings for service integration in composite floors, Final report,
Office for Official Publications of the European Communities, Luxembourg, 2006,
[13] Ward J. K.: Design of composite and non-composite cellular beams. The Steel Construction
Institute, 1990,
[14] ENV 1993-1-1:1992/A2:1998, Eurocode 3 : Calcul des structures en acier. Partie 1-1:
Règles générales – Règles générales et règles pour les bâtiments, Annexe N, Ouvertures
dans les âmes,
[15] Bihina G.: Analyse du comportement au feu des planchers mixtes acier-béton constitutés
de poutres cellulaires, Doctoral Thesis, Université Blaise-Pascal – Clermont II, Clermont-
Ferrand, 2011,
[16] Durif S., Bouchaïr A. H., Vassart O.: Validation of an analytical model for curved
and tapered cellular beams at normal and fire conditions, Periodica Polytechnica Civil
Engineering, Vol. 57, No. 1 (2013), p. 83–95,
[17] Panedpojaman P., Thepchatri T., Limkatanyu S.: Novel design equations for shear
strength of local web-post buckling in cellular beams, Thin-Walled Structures, vol. 76
(2014), p. 92–104,
[18] Nseir J., Lo M., Sonck D., Somja H., Vassart O., Boissonnade N.: Lateral torsional
buckling of cellular steel beams, Proceedings of the Annual Stability Conference, Structural
Stability Research Council, Grapevine, Texas, April 18-21, 2012,
[19] El-Sawy K.M., Sweedan A.M.I. , Martini M.I.: Moment gradient factor of cellular steel
beams under inelastic flexure, Journal of Constructional Steel Research, vol. 98 (2014),
p. 20–34,
[20] Giżejowski M.A., Salah W.A.: Numerical modeling of composite castellated beams,
Proceedings of the Sixth International Conference on Composite Construction in Steel
and Concrete, Devil's Thumb Ranch in Tabernash, Colorado, July 20-24, 2008,
[21] Giżejowski M.A., Salah W.A.: Numerical modeling of composite castellated beams, in:
Leon R.T., Perea T., Rassati G.A., Lange J. (Eds.): Composite construction and steel
and concrete, American Society of Civil Engineering, Reston, USA, 2011, p. 554-565,
[22] EN 1993-1-8:2005: Eurocode 3: Design of steel structures. Part 1-8: Design of joints,
[23] Hechler O.: Fertigung von Lochstegträgern. Parkhäuser und Lochstegträger in
Stahl-oder Stahlverbundbauweise, html presentation accessible in [25]
[24] https://halshs.archives-ouvertes.fr/tel-00673404/document [access: April 18,2015]
[25] http://www.stb.rwth-aachen.de/projekte/2005/LWO+/LWO+.html, [access: April
18, 2015]