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Tension flange instability of I-beams
Luleå tekniska universitet.
1999 (English)In: Journal of constructional steel research, ISSN 0143-974X, E-ISSN 1873-5983, Vol. 49, no 1, p. 69-81Article in journal (Refereed) Published
Abstract [en]

The possible lateral-torsional instability of an I-beam with braced compression flange is studied. It is shown that taking the sagging prior to lateral-torsional buckling into account gives a finite critical moment. A solution for a uniform I-beam under uniform bending is presented. It is further shown that this solution can be approximated by a simple geometrical relation for the critical strain. This approximation is a lower bound also where the bending is causing inelastic deformations. For normal structures tension flange instability will not be a problem but it may be necessary to consider it for very high strength shallow beams or if plastic rotations occur in the sagging region.

Place, publisher, year, edition, pages
1999. Vol. 49, no 1, p. 69-81
National Category
Building Technologies
Research subject
Steel Structures
Identifiers
URN: urn:nbn:se:ltu:diva-7076DOI: 10.1016/S0143-974X(97)00049-7ISI: 000076843200004Scopus ID: 2-s2.0-0033020719Local ID: 56333b90-7741-11dc-80da-000ea68e967bOAI: oai:DiVA.org:ltu-7076DiVA, id: diva2:979963
Note
Godkänd; 1999; 20071010 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Johansson, Bernt

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