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Advances in Structural Engineering pp 2087–2101Cite as

Experimental Investigation on Uniaxial Compressive Behaviour of Square Concrete Filled Steel Tubular Columns

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Abstract

This paper presents a brief review of previous research work done on uniaxial compressive behavior of concrete filled steel tubular (CFT) columns and the results of experimental study conducted on twenty four number of cold-formed steel square sections filled with conventional concretes of grade M30 and M60 tested under uniaxial compression. The effect of length to breadth (L/B) ratio of square steel tubes and concrete core strength of CFTs on axial compressive strength and behavior of CFT columns was studied. The experimental strength values were compared with predictions using Eurocode 4-1994, ACI 1999, AS 3600-1994, AISC-LRFD-1999, AISC 2005, GJB 4142-2000 and BS 5400-1979 and from equation suggested by previous researcher. The effect of breadth to thickness (B/t) ratio, % steel area contribution and constraining factor on axial compressive strength was also examined. The results showed that the axial compressive strength of CFTs increases due to confinement effect of concrete core on steel tubes and the estimation of axial compressive strength using all methods is conservative. A modified equation is also suggested.

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Abbreviations

MN:

Mega newton

D:

Diameter of steel tube

t:

Thickness of steel tube

L:

Length of column

As:

Area of steel tube

Ac:

Area of concrete core

L.B:

Local buckling

Pexp:

Experimental axial strength

Pec4:

Axial strength as per EC 4-1994

Plrfd:

Axial strength as per AISC-LRFD-1999

Paisc:

Axial strength as per AISC-2005

Pgjb:

Axial strength as per GJB 4142-2000

Pbs:

Axial strength as per BS 5400-1979

O.B:

Overall buckling

Paci/as:

Axial strength as per ACI 318-1999/AS 3600-1994

Pmuh:

Axial strength as per Muhammad’s equation

References

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Acknowledgments

The authors wish to thank the Management of SRM University for providing financial support and facilities to carry out the research work.

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Authors and Affiliations

  1. SRM University, Kattankulathur, Kancheepuram District, Tamilnadu, India

    N. Umamaheswari

  2. Indian Institute of Technology (IIT) Madras, Chennai, Tamilnadu, India

    S. Arul Jayachandran

Authors
  1. N. Umamaheswari
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  2. S. Arul Jayachandran
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Editor information

Editors and Affiliations

  1. Department of Civil Engineering, Indian Institute of Technology (IIT) Delhi, New Delhi, Delhi, India

    Vasant Matsagar

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Umamaheswari, N., Arul Jayachandran, S. (2015). Experimental Investigation on Uniaxial Compressive Behaviour of Square Concrete Filled Steel Tubular Columns. In: Matsagar, V. (eds) Advances in Structural Engineering. Springer, New Delhi. https://doi.org/10.1007/978-81-322-2187-6_160

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  • DOI: https://doi.org/10.1007/978-81-322-2187-6_160

  • Publisher Name: Springer, New Delhi

  • Print ISBN: 978-81-322-2186-9

  • Online ISBN: 978-81-322-2187-6

  • eBook Packages: EngineeringEngineering (R0)

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