Experimental study of critical and post-buckling behaviour of prestressed stayed columns

Osofero, Israel, Wadee, Ahmer and Gardner, Leroy (2012) Experimental study of critical and post-buckling behaviour of prestressed stayed columns. Journal of Constructional Steel Research, 79. 226 - 241. ISSN 0143-974X

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Abstract

A full scale experimental investigation into the strength and behaviour of prestressed steel stayed columns in compression has been conducted. Results, including full load versus end-shortening curves, for a total of 18 test specimens are presented. Two critical modes of buckling — symmetric and antisymmetric — with interactive post-buckling are demonstrated experimentally and the imperfection sensitivity of the stayed columns is investigated. Interactive buckling is observed primarily when the individual buckling loads of the antisymmetric and symmetric modes are close or when the antisymmetric mode is critical. Analysis of the results reveals that increased prestress leads to an increased load-carrying capacity when instability occurs in the symmetric mode, but the reverse trend is found when the antisymmetric mode is critical.

Item Type:	Article
Uncontrolled Keywords:	Prestressed stayed columns, steel structures, physical experiments, ultimate load, interactive buckling, post-buckling, cable system, cross-arm
Subjects:	H200 Civil Engineering H300 Mechanical Engineering
Department:	Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User:	Israel Osofero
Date Deposited:	05 Sep 2013 08:05
Last Modified:	13 Oct 2019 00:32
URI:	http://nrl.northumbria.ac.uk/id/eprint/13438

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