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Abstract

This paper considers the thermo-elastic behaviour of shallow steel arches of long span, which are deployed in large roofing applications such as airport terminals, during a fire. The analysis of shallow arches requires recourse to geometrically non-linear analysis, which is further complicated by the nature of the thermal loading which may occur under a fire and of the degradation of the material properties of steel during a fire. A general technique based on the principle of virtual work is developed, and the analysis results in a formulation in closed form, which includes the stiffness of a tie between the supports of an arch and the supporting columns. It illustrates that these long span structural arch roofing elements are stressed at a low enough level to, in general, preclude considering inelastic effects during a typical fire, so that the simplifying assumptions of elastic behaviour are valid. Guidance is suggested for preliminary design purposes.

Keywords

arch fire non-linear steel tie

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References

Bradford

M.A.

(2004). “Design of steel arches to AS4100”, International Symposium on Innovation and Advances in Steel Structures, Singapore, pp. 145–154.

Bradford

M.A.

(2006a). “In-plane stability of pinned arches with elastic restraints under thermal loading”, International Journal of Structural Stability and Dynamics, Vol. 6, No. 2, pp. 163–177.

Bradford

M.A.

(2006b). “Buckling of tubular steel arches subjected to fire loading”, Eleventh International Symposium on Tubular Structures, Quebec City, Canada, pp. 353–358.

Bradford

M.A.

(2006c). “Elastic analysis of straight members at elevated temperature”, Advances in Structural Engineering, Vol. 9, No. 5, pp. 611–618.

Bradford

M.A.

(2007). “Behaviour of shallow steel arches subjected to thermal loading”, Sixth International Conference on Steel and Aluminium Structures, Oxford, UK, pp. 81–88.

Bradford

M.A.

and Pi

Y.L.

(2004). “Design of steel arches against in-plane stability”, International Journal of Applied Mechanics and Engineering, Vol. 9, No. 1, pp. 37–45.

Y.L.

and Bradford

M.A.

(2004). “In-plane strength and design of fixed steel I-section arches”, Engineering Structures, Vol. 26, No. 3, pp. 291–301.

Y.L.

and Bradford

M.A.

(2008). “Thermoelastic lateral-torsional buckling of fixed slender beams under linear temperature gradient”, International Journal of Mechanical Sciences, Vol. 50, No. 7, pp. 1183–1193.

Y.L.

Bradford

M.A.

and Uy

(2002). “In-plane stability of arches”, International Journal of Solids and Structures, Vol. 39, No. 1, pp. 105–125.

10.

Standards Australia (1998). AS4100 Steel Structures, S.A., Sydney, Australia.

11.

Trahair

N.S.

and Bradford

M.A.

(1998). The Behaviour and Design of Steel Structures to AS4100, 3rd edition, E&FN Spon, London.

12.

Trahair

N.S.

Bradford

M.A.

and Nethercot

D.A.

(2001). The Behaviour and Design of Steel Structures to BS5950, 3rd edition, Spon Press, London.

13.

Trahair

N.S.

Bradford

M.A.

Nethercot

D.A.

and Gardner

(2008). The Behaviour and Design of Steel Structures to BS5950, 4th edition, Taylor and Francis, London.

14.

Usmani

A.S.

Rotter

J.M.

Lamont

Sanad

A.M.

and Gillie

(2001). “Fundamental principles of structural behaviour under thermal effects”, Fire Safety Journal, Vol. 36, No. 8, pp. 721–744.

15.

Wang

Y.C.

(2002). Steel and Composite Structures: Behaviour and Design for Fire Safety, Spon Press, London.

Long-Span Shallow Steel Arches Subjected to Fire Loading

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