In-plane creep behaviour of concrete-filled steel tubular arches

Pi, Y; Bradford, MA; Qu, W

In-plane creep behaviour of concrete-filled steel tubular arches

Pi, Y Bradford, MA Qu, W

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Publisher:: Taylor & Francis Group
Publication Type:: Conference Proceeding
Citation:: Proceedings of the 13th International Symposium on Tubular Structures - ISTS13, 2010, pp. 607 - 613
Issue Date:: 2010-01

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Field	Value	Language
dc.contributor.author	Pi, Y	en_US
dc.contributor.author	Bradford, MA	en_US
dc.contributor.author	Qu, W	en_US
dc.contributor.editor	Ben Young	en_US
dc.date	2010-12-15	en_US
dc.date.issued	2010-01	en_US
dc.identifier.citation	Proceedings of the 13th International Symposium on Tubular Structures - ISTS13, 2010, pp. 607 - 613	en_US
dc.identifier.isbn	978-0-415-58473-9	en_US
dc.identifier.uri	http://hdl.handle.net/10453/16463
dc.description.abstract	This paper presents a theoretical analysis for the in-plane creep behaviour and buckling of Concrete-Filled Steel Tubular (CFST) circular arches due to creep and shrinkage of the concrete core under a sustained uniform radial load. The algebraically tractable age-adjusted effective modulus method is used to model the creep behaviour of the concrete core, based on which the differential equations of equilibrium for the time-dependent analysis of CFST arches are derived and analytical solutions for the long-term displacements, stresses and internal forces of CFST arches under the sustained load are obtained. It is shown that the visco-elastic effects of creep and shrinkage of the concrete core have significant long-term effects on the in-plane structural behaviour of CFST arches. The creep radial and axial displacements, and the long-term bending moment increase substantially with time. It is demonstrated that the time-dependent change of the equilibrium configuration of the CFST arch can lead to a buckling configuration being attained in the long-term under a sustained load. The solution for the possible prebuckling structural life time for creep buckling of deep CFST arches has been derived.	en_US
dc.publisher	Taylor & Francis Group	en_US
dc.relation.ispartof	Proceedings of the 13th International Symposium on Tubular Structures - ISTS13	en_US
dc.relation.ispartof	International Symposium on Tubular Structures	en_US
dc.title	In-plane creep behaviour of concrete-filled steel tubular arches	en_US
dc.type	Conference Proceeding
utslib.location	United Kingdom	en_US
utslib.location.activity	Hong Kong	en_US
utslib.for	0905 Civil Engineering	en_US
dc.location.activity	Hong Kong	en_US
dc.location.activity	Monterey, CA, USA
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
utslib.copyright.status	closed_access
pubs.consider-herdc	true	en_US
pubs.place-of-publication	United Kingdom	en_US
pubs.start-date	2010-12-15	en_US

Abstract:

This paper presents a theoretical analysis for the in-plane creep behaviour and buckling of Concrete-Filled Steel Tubular (CFST) circular arches due to creep and shrinkage of the concrete core under a sustained uniform radial load. The algebraically tractable age-adjusted effective modulus method is used to model the creep behaviour of the concrete core, based on which the differential equations of equilibrium for the time-dependent analysis of CFST arches are derived and analytical solutions for the long-term displacements, stresses and internal forces of CFST arches under the sustained load are obtained. It is shown that the visco-elastic effects of creep and shrinkage of the concrete core have significant long-term effects on the in-plane structural behaviour of CFST arches. The creep radial and axial displacements, and the long-term bending moment increase substantially with time. It is demonstrated that the time-dependent change of the equilibrium configuration of the CFST arch can lead to a buckling configuration being attained in the long-term under a sustained load. The solution for the possible prebuckling structural life time for creep buckling of deep CFST arches has been derived.

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http://hdl.handle.net/10453/16463