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Composite Space Frame?Experimental/Analytical Study

by David C. O'Leary, Univ of Salford, Salford, United Kingdom,
Mohammed Kuleib, Univ of Salford, Salford, United Kingdom,
Christopher T. Duffy, Univ of Salford, Salford, United Kingdom,



Document Type: Proceeding Paper

Part of: Composite Construction in Steel and Concrete II

Abstract:

This paper describes work carried out on a composite space frame system. The system, previously developed for roof construction, comprised a pyramidal arrangement of steel angles and circular bars. In its composite form the top chord of the system consisted of a profiled steel sheet/concrete slab attached to the underlying steel angles with screws acting as shear connectors. The experimental investigation centered on the behaviour of the top chord acting as a strut carrying significant axial forces as an element in the space frame together with the vertical forces associated with the floor loading. The analysis of the composite space frame was carried out by modelling the composite top chord as a composite T-beam comprised of composite beam elements and thin steel plate elements. Matrix and finite element methods were used to calculate the force distribution and deformation of the full composite space frame.

Subject Headings: Composite beams | Space frames | Composite structures | Finite element method | Steel structures | Steel frames | Steel plates

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