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    Behaviour of inclined, tapered and STS square CFST stub columns subjected to axial load

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    Publication date
    2012
    Author
    Lam, Dennis
    Dai, Xianghe
    Han, L-H.
    Ren, Q-X.
    Li, W.
    Keyword
    REF 2014; Concrete-filled steel stub column; Inclined; Tapered; Straight-tapered-straight; Concrete confinement; Square hollow section; Numerical modelling; Parametric study
    Peer-Reviewed
    yes
    
    Metadata
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    Abstract
    This paper describes the finite element method using ABAQUS to model the axial compressive behaviour of inclined, tapered and straight-tapered-straight (STS) concrete filled steel tubular stub (CFST) columns with square hollow sections. The accuracy of the numerical model was verified by comparing the numerical predictions with experimental study of the 200×200×3.75 RHS filled with C60 concrete with inclined angle of 0-9° and tapered angle of 0-4°. The results show that the compressive behaviours, load vs. strain relationship and failure mode predicted by the numerical simulations were agreeable with experimental results. After the validation, a parametric study was performed with 3 typical steel hollow sections (200×200×3.75 RHS, 300×300×6.3 RHS and 400×400×8.0 RHS) and extended the inclined angle and tapered angle to 0-15° and 0-12° respectively. The parametric study highlights some of the behaviour observed in test and extends the application range. In addition, reduction factor for calculating the axial capacity of this form of CFST columns are proposed.
    URI
    http://hdl.handle.net/10454/5918
    Version
    published version paper
    Citation
    Dai, X., Lam, D., Han, L. H., Ren, Q. X. and Li, W. (2012). Behaviour of inclined, tapered and STS square CFST stub columns subjected to axial load.Thin-Walled Structures. Vol. 54, pp. 94 -105.
    Link to publisher’s version
    http://dx.doi.org/10.1016/j.tws.2012.02.010
    Type
    Article
    Collections
    Engineering and Informatics Publications

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