Improved stiffness distribution factors for evaluation of effective buckling lengths in multi-story sway frames

Gantes, CJ; Mageirou, GE

dc.contributor.author	Gantes, CJ	en
dc.contributor.author	Mageirou, GE	en
dc.date.accessioned	2014-03-01T01:22:30Z
dc.date.available	2014-03-01T01:22:30Z
dc.date.issued	2005	en
dc.identifier.issn	0141-0296	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/16596
dc.subject	Buckling	en
dc.subject	Columns	en
dc.subject	Effective length	en
dc.subject	Multi-story sway frames	en
dc.subject	Stiffness coefficients	en
dc.subject.classification	Engineering, Civil	en
dc.subject.other	Boundary conditions	en
dc.subject.other	Buckling	en
dc.subject.other	Graphic methods	en
dc.subject.other	Stiffness	en
dc.subject.other	Buckling length coefficients	en
dc.subject.other	Optimal design	en
dc.subject.other	Performance evaluation	en
dc.subject.other	Stiffness distributions	en
dc.subject.other	Buildings	en
dc.subject.other	earthquake engineering	en
dc.title	Improved stiffness distribution factors for evaluation of effective buckling lengths in multi-story sway frames	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.engstruct.2005.02.009	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.engstruct.2005.02.009	en
heal.language	English	en
heal.publicationDate	2005	en
heal.abstract	The objective of this paper is to propose improved expressions for the effective buckling length coefficient of columns in multi-story sway frames. To that effect, a complete set of rotational stiffness coefficients are derived, which are then used for the replacement of members converging at the bottom and top ends of the column in question by equivalent springs. All possible rotational and translational boundary conditions at the far end of these members, as well as the eventual presence of axial force, are considered. An analytical expression and a corresponding graph similar to those used by Eurocode 3 are then proposed for the calculation of the effective buckling length coefficient. Examples of three-story sway frames are presented, where the proposed approach is found to be in excellent agreement with finite element results, while applications of Eurocode 3 and LRFD lead to significant inaccuracies. (c) 2005 Elsevier Ltd. All rights reserved.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	Engineering Structures	en
dc.identifier.doi	10.1016/j.engstruct.2005.02.009	en
dc.identifier.isi	ISI:000229721500012	en
dc.identifier.volume	27	en
dc.identifier.issue	7	en
dc.identifier.spage	1113	en
dc.identifier.epage	1124	en