UNSPECIFIED (2000) The influence of mode interaction upon the buckling of concentrically loaded wide-flange pultruded columns. In: 3rd International Conference on Advanced Composite Materials in Bridges and Structures, AUG 15-18, 2000, OTTAWA, CANADA.

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Abstract

An ongoing experimental investigation concerning the buckling behaviour of fibre-reinforced polymer column is presented. Full-sized tests are being performed on wide-flange pultruded structurals within the range of heights where interaction between the Euler and local flange buckling modes is expected. The research aims to provide test data that will determine the influence of modal coupling upon concentrically loaded columns. The results will be used to prepare guidance for code writers and designers. The extent to which mode interaction reduces the column buckling load is highly sensitive to imperfections. Great care is being taken during the experiments to ensure that the load is applied concentrically. Measurement of the initial out-of-straightness of the test specimens is deemed to be important as it provides a greater awareness of the imperfections present. To date, the measured out-of-straightness of ail test specimens has been small, which has limited the development of mode interaction. Global buckling has been the failure mode for the majority of tests, although one test ended in a compound failure. Compound failure describes the situation where the local and global buckling modes occur concurrently in a violent and unstable manner.

Item Type:	Conference Item (UNSPECIFIED)
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Journal or Publication Title:	ADVANCED COMPOSITE MATERIALS IN BRIDGES AND STRUCTURES
Publisher:	CANADIAN SOCIETY CIVIL ENGINEERING
ISBN:	0-7709-0447-5
Editor:	Humar, JL and Razaqpur, AG
Date:	2000
Number of Pages:	8
Page Range:	pp. 463-470
Publication Status:	Published
Title of Event:	3rd International Conference on Advanced Composite Materials in Bridges and Structures
Location of Event:	OTTAWA, CANADA
Date(s) of Event:	AUG 15-18, 2000
URI:	http://wrap.warwick.ac.uk/id/eprint/10243

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