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    Behaviour of normal and high strength concrete-filled compact steel tube circular stub columns.

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    Publication date
    2006
    Author
    El-Lobody, E.
    Young, B.
    Lam, Dennis
    Keyword
    Composite columns
    Concrete
    High strength
    Steel tubes
    Finite element
    Modelling
    Confinement
    Structural design
    Concrete-filled steel tube circular stub columns
    Peer-Reviewed
    yes
    
    Metadata
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    Abstract
    This paper presents the behaviour and design of axially loaded concrete-filled steel tube circular stub columns. The study was conducted over a wide range of concrete cube strengths ranging from 30 to 110 MPa. The external diameter of the steel tube-to-plate thickness (D/t) ratio ranged from 15 to 80 covering compact steel tube sections. An accurate finite element model was developed to carry out the analysis. Accurate nonlinear material models for confined concrete and steel tubes were used. The column strengths and load¿axial shortening curves were evaluated. The results obtained from the finite element analysis were verified against experimental results. An extensive parametric study was conducted to investigate the effects of different concrete strengths and cross-section geometries on the strength and behaviour of concrete-filled compact steel tube circular stub columns. The column strengths predicted from the finite element analysis were compared with the design strengths calculated using the American, Australian and European specifications. Based on the results of the parametric study, it is found that the design strengths given by the American Specifications and Australian Standards are conservative, while those of the European Code are generally unconservative. Reliability analysis was performed to evaluate the current composite column design rules.
    URI
    http://hdl.handle.net/10454/5789
    Version
    published version paper
    Citation
    El-Lobody, E., Young, B. and Lam, D. (2006). Behaviour of Normal and High Strength Concrete-Filled Compact Steel Tube Circular Stub Columns. Journal of Constructional Steel Research. Vol. 62, No. 7, pp. 706-715.
    Link to publisher’s version
    http://dx.doi.org/10.1016/j.jcsr.2005.11.002
    Type
    Article
    Collections
    Engineering and Informatics Publications

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