Critical lateral-torsional buckling moments of steel web-tapered I-beams

Raftoyiannis, IG; Adamakos, T

dc.contributor.author	Raftoyiannis, IG	en
dc.contributor.author	Adamakos, T	en
dc.date.accessioned	2014-03-01T01:33:05Z
dc.date.available	2014-03-01T01:33:05Z
dc.date.issued	2010	en
dc.identifier.issn	18748368	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20316
dc.subject	Elastic buckling	en
dc.subject	Lateral-torsional buckling	en
dc.subject	Steel profiles	en
dc.subject	Web-tapered beams	en
dc.subject.other	Bending load	en
dc.subject.other	Carrying capacity	en
dc.subject.other	Critical moment	en
dc.subject.other	Crosssectional geometry	en
dc.subject.other	Design strength	en
dc.subject.other	Elastic behavior	en
dc.subject.other	Elastic buckling	en
dc.subject.other	Eurocode 3	en
dc.subject.other	Graphical forms	en
dc.subject.other	I beams	en
dc.subject.other	Lateral-torsional buckling	en
dc.subject.other	Modification factors	en
dc.subject.other	Non-uniform members	en
dc.subject.other	Numerical approaches	en
dc.subject.other	Single location	en
dc.subject.other	Taper ratios	en
dc.subject.other	Tapered beam	en
dc.subject.other	Transverse loading	en
dc.subject.other	Web-tapered beams	en
dc.subject.other	Web-tapered I-beams	en
dc.subject.other	Beams and girders	en
dc.subject.other	Bending (deformation)	en
dc.subject.other	Columns (structural)	en
dc.subject.other	Buckling	en
dc.title	Critical lateral-torsional buckling moments of steel web-tapered I-beams	en
heal.type	journalArticle	en
heal.identifier.primary	10.2174/1874836801004010105	en
heal.identifier.secondary	http://dx.doi.org/10.2174/1874836801004010105	en
heal.publicationDate	2010	en
heal.abstract	This paper deals with the stability of steel web-tapered I-beams subjected to bending loads. Tapered beams can carry a maximum bending moment at a single location while in the rest of the member the moment carrying capacity is considerably lower. This results in appreciable savings in materials as well as in construction. Numerous researchers have focused on the investigation of the elastic behavior of tapered I-beams and many theoretical findings have been incorporated into the current specifications. According to Eurocode 3, the elastic critical moment is used for determining the design strength against lateral-torsional buckling (LTB) of I-beams with uniform cross-section and a number of coefficients is employed accounting for the boundary conditions, the cross-sectional geometry and the type of transverse loading, while no detailed information is given regarding non-uniform members. In this work a simple numerical approach is presented for determining the critical lateral-torsional buckling loads of web-tapered I-beams. Modification factors of the elastic critical moment with reference to the mean cross-section are given for various taper ratios. The results presented in graphical form are compared with those of previous investigations. The approach presented herein can be very easily applied for the design of tapered beams against lateral-torsional buckling. © Raftoyiannis and Adamakos; Licensee Bentham Open.	en
heal.journalName	Open Construction and Building Technology Journal	en
dc.identifier.doi	10.2174/1874836801004010105	en
dc.identifier.volume	4	en
dc.identifier.spage	105	en
dc.identifier.epage	112	en