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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/1222/1/CONCET_2009_Nara.PDF
http://eprints.utp.edu.my/1222/
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spelling my.utp.eprints.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
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
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/1222/1/CONCET_2009_Nara.PDF
http://eprints.utp.edu.my/1222/
_version_ 1738655113213378560
score 13.211869

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