Vol. 4, No. 4, pp. 306-322 (2008)
IN-PLANE STRENGTH OF STEEL ARCHES
Yong-Lin Pi 1,*, Mark Andrew Bradford 2 and Francis Tin-Loi 3
1 The corresponding author, Senior Research Fellow, Centre of Infrastructure Engineering & Safety,
School of Civil & Environmental Engineering, UNSW, Sydney, NSW 2052, Australia
*(Corresponding author: E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.)
2 Federation Fellow, Professor, Centre of Infrastructure Engineering &Safety,
School of Civil & Environmental Engineering, UNSW, Sydney, NSW 2052, Australia
email: This email address is being protected from spambots. You need JavaScript enabled to view it.
3 Professor, Centre of Infrastructure Engineering & Safety, School of Civil & Environmental Engineering,
UNSW, Sydney, NSW 2052, Australia, email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Received: 24 September 2007; Revised: 15 November 2007; Accepted: 20 November 2007
DOI: 10.18057/IJASC.2008.4.4.3
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ABSTRACT
A rational finite element program for the nonlinear elastic-plastic analysis of arches is used in this paper to investigate the in-plane elastic-plastic buckling and strength of circular steel arches. The finite element program considers the effects of large deformations, material nonlinearities, initial geometric imperfection, and residual stresses in predicting the elastic-plastic behaviour of steel arches. Radial loads uniformly distributed around the arch axis, concentrated loads, and distributed loads along the horizontal projection of an arch are studied, which induce either uniform compression or combined bending and compression in the arch. The complex effects of initial imperfection, rise-to-span ratio, residual stresses and the end support conditions on the in-plane elastic-plastic stability and strength of steel arches are included in the study. Useful design equations against in-plane failure are proposed for steel arches under uniform compression and under combined bending and compressive actions.
KEYWORDS
Arch, combined bending and compression, compression, buckling, elastic-plastic, steel, strength
This paper is extended from the paper presented in ICSCS07 entitled In-plane inelastic buckling and strength of steel arches.
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