HIGH STRENGTH CONCRETE FILLED SQUARE AND CIRCULAR STEEL TUBES UNDER AXIAL LOAD

Concrete Filled Steel Tube (CFST) is a composite structural system based on filling steel tubes with concrete. Steel and concrete have different stress-strain curves and distinctly different behaviour. The two materials interact and the determination of combined properties is difficult. The compress...

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Main Authors:	Aznan, I., Narayanan,, S.P, Kurian, V.J.
Format:	Conference or Workshop Item
Published:	10th International Conference On Concrete Engineering and Technology, CONCET’09 2009
Subjects:	TA Engineering (General). Civil engineering (General)
Online Access:	http://eprints.utp.edu.my/1222/ http://eprints.utp.edu.my/1222/1/CONCET_2009_Nara.PDF

id	utp-1222
recordtype	eprints
spelling	utp-12222017-01-19T08:25:28Z HIGH STRENGTH CONCRETE FILLED SQUARE AND CIRCULAR STEEL TUBES UNDER AXIAL LOAD Aznan, I. Narayanan,, S.P Kurian, V.J. TA Engineering (General). Civil engineering (General) Concrete Filled Steel Tube (CFST) is a composite structural system based on filling steel tubes with concrete. Steel and concrete have different stress-strain curves and distinctly different behaviour. The two materials interact and the determination of combined properties is difficult. The compression behaviour of CFST with ordinary concrete and steel has been well studied. However the behaviour of CFST with high strength concrete under axial load and its relevance to offshore applications has not been studied. Hot-rolled welded steel pipes Class Light BS 1387:1985 and cold rolled Square Hollow Section (Grade A) ASTM A 500 were used in a series of axial compression tests. Hollow square and circular CFST specimens and also CFST were tested under axial load to identify the effect of various parameters on the behaviour. 36 specimens were tested with concrete strengths of 30, 60 and 80 N/mm2. The effect of tube thickness, diameter, grade of concrete, stiffening of steel due to infill and the confinement of concrete are examined. Experimental column strengths are compared with the values predicted by Eurocode 4, ACI, AIJ, AS and BS 5400 codes. Small circular CFST are largely affected with steel confinement effect and scale effect. For smaller D/t ratio, a steel tube provides good confinement effect to concrete. For Square CFST with large B/t ratio, it is necessary to take into consideration a capacity reduction due to local buckling of the steel tube wall of the column. 10th International Conference On Concrete Engineering and Technology, CONCET’09 2009-03 Conference or Workshop Item PeerReviewed application/pdf http://eprints.utp.edu.my/1222/1/CONCET_2009_Nara.PDF Aznan, I. and Narayanan,, S.P and Kurian, V.J. (2009) HIGH STRENGTH CONCRETE FILLED SQUARE AND CIRCULAR STEEL TUBES UNDER AXIAL LOAD. In: 10th International Conference on Concrete Engineering and Technology (CONCET 2009), March 2009, Kuala Lumpur. http://eprints.utp.edu.my/1222/
institution	Universiti Teknologi Petronas Universiti Teknologi Petronas
repository_type	Digital Repository
institution_category	Local University
building	UTP Repository
collection	Online Access
topic	TA Engineering (General). Civil engineering (General)
spellingShingle	TA Engineering (General). Civil engineering (General) Aznan, I. Narayanan,, S.P Kurian, V.J. HIGH STRENGTH CONCRETE FILLED SQUARE AND CIRCULAR STEEL TUBES UNDER AXIAL LOAD
description	Concrete Filled Steel Tube (CFST) is a composite structural system based on filling steel tubes with concrete. Steel and concrete have different stress-strain curves and distinctly different behaviour. The two materials interact and the determination of combined properties is difficult. The compression behaviour of CFST with ordinary concrete and steel has been well studied. However the behaviour of CFST with high strength concrete under axial load and its relevance to offshore applications has not been studied. Hot-rolled welded steel pipes Class Light BS 1387:1985 and cold rolled Square Hollow Section (Grade A) ASTM A 500 were used in a series of axial compression tests. Hollow square and circular CFST specimens and also CFST were tested under axial load to identify the effect of various parameters on the behaviour. 36 specimens were tested with concrete strengths of 30, 60 and 80 N/mm2. The effect of tube thickness, diameter, grade of concrete, stiffening of steel due to infill and the confinement of concrete are examined. Experimental column strengths are compared with the values predicted by Eurocode 4, ACI, AIJ, AS and BS 5400 codes. Small circular CFST are largely affected with steel confinement effect and scale effect. For smaller D/t ratio, a steel tube provides good confinement effect to concrete. For Square CFST with large B/t ratio, it is necessary to take into consideration a capacity reduction due to local buckling of the steel tube wall of the column.
format	Conference or Workshop Item
author	Aznan, I. Narayanan,, S.P Kurian, V.J.
author_facet	Aznan, I. Narayanan,, S.P Kurian, V.J.
author_sort	Aznan, I.
title	HIGH STRENGTH CONCRETE FILLED SQUARE AND CIRCULAR STEEL TUBES UNDER AXIAL LOAD
title_short	HIGH STRENGTH CONCRETE FILLED SQUARE AND CIRCULAR STEEL TUBES UNDER AXIAL LOAD
title_full	HIGH STRENGTH CONCRETE FILLED SQUARE AND CIRCULAR STEEL TUBES UNDER AXIAL LOAD
title_fullStr	HIGH STRENGTH CONCRETE FILLED SQUARE AND CIRCULAR STEEL TUBES UNDER AXIAL LOAD
title_full_unstemmed	HIGH STRENGTH CONCRETE FILLED SQUARE AND CIRCULAR STEEL TUBES UNDER AXIAL LOAD
title_sort	high strength concrete filled square and circular steel tubes under axial load
publisher	10th International Conference On Concrete Engineering and Technology, CONCET’09
publishDate	2009
url	http://eprints.utp.edu.my/1222/ http://eprints.utp.edu.my/1222/1/CONCET_2009_Nara.PDF
first_indexed	2018-09-08T10:05:18Z
last_indexed	2018-09-08T10:05:18Z
_version_	1611033339872935936

HIGH STRENGTH CONCRETE FILLED SQUARE AND CIRCULAR STEEL TUBES UNDER AXIAL LOAD

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