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Nonlinear analysis of biaxially loaded high strength rectangular concrete-filled steel tubular slender beam-columns, part II: applications

Conference Paper


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Abstract


  • This paper presents the verification and applications of a numerical model developed for biaxially

    loaded high strength thin-walled rectangular concrete-filled steel tubular (CFST) slender beamcolumns

    with local buckling effects. The accuracy of the numerical model is established by

    comparisons of numerical results with existing experimental data. The verified numerical model is

    employed to investigate the effects of four parameters including concrete compressive strength,

    loading eccentricity, depth-to-thickness ratio and columns slenderness on the strength reduction factor

    and steel contribution ratio of CFST slender beam-columns under biaxial bending. The results

    obtained indicate that increasing each of the four parameters decreases the strength reduction factor.

    The steel contribution ratio is found to decrease with an increase in the concrete compressive strength

    and depth-to-thickness ratio but increase with increasing the loading eccentricity and column

    slenderness ratios. It is shown that the numerical model is efficient and accurate for predicting the

    load-deflection curves and strength envelopes for thin-walled rectangular CFST slender beamcolumns

    under biaxial loads. Benchmark numerical results given in this paper provide a better

    understanding of the local and global interaction buckling behavior of high strength thin-walled

    rectangular CFST slender beam-columns and are useful for the development of composite design

    codes.

UOW Authors


  •   Patel, Vipulkumar I. (external author)
  •   Liang, Qing Quan (external author)
  •   Hadi, Muhammad

Publication Date


  • 2012

Citation


  • Patel, V. Ishvarbhai., Liang, Q. & Hadi, M. N. S. (2012). Nonlinear analysis of biaxially loaded high strength rectangular concrete-filled steel tubular slender beam-columns, part II: applications. In J. Richard. Liew & S. Lee (Eds.), Proceedings of the 10th International Conference on Advances in Steel Concrete Composite and Hybrid Structures (pp. 411-418). Singapore: Research Publishing.

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1043&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/38

Start Page


  • 411

End Page


  • 418

Abstract


  • This paper presents the verification and applications of a numerical model developed for biaxially

    loaded high strength thin-walled rectangular concrete-filled steel tubular (CFST) slender beamcolumns

    with local buckling effects. The accuracy of the numerical model is established by

    comparisons of numerical results with existing experimental data. The verified numerical model is

    employed to investigate the effects of four parameters including concrete compressive strength,

    loading eccentricity, depth-to-thickness ratio and columns slenderness on the strength reduction factor

    and steel contribution ratio of CFST slender beam-columns under biaxial bending. The results

    obtained indicate that increasing each of the four parameters decreases the strength reduction factor.

    The steel contribution ratio is found to decrease with an increase in the concrete compressive strength

    and depth-to-thickness ratio but increase with increasing the loading eccentricity and column

    slenderness ratios. It is shown that the numerical model is efficient and accurate for predicting the

    load-deflection curves and strength envelopes for thin-walled rectangular CFST slender beamcolumns

    under biaxial loads. Benchmark numerical results given in this paper provide a better

    understanding of the local and global interaction buckling behavior of high strength thin-walled

    rectangular CFST slender beam-columns and are useful for the development of composite design

    codes.

UOW Authors


  •   Patel, Vipulkumar I. (external author)
  •   Liang, Qing Quan (external author)
  •   Hadi, Muhammad

Publication Date


  • 2012

Citation


  • Patel, V. Ishvarbhai., Liang, Q. & Hadi, M. N. S. (2012). Nonlinear analysis of biaxially loaded high strength rectangular concrete-filled steel tubular slender beam-columns, part II: applications. In J. Richard. Liew & S. Lee (Eds.), Proceedings of the 10th International Conference on Advances in Steel Concrete Composite and Hybrid Structures (pp. 411-418). Singapore: Research Publishing.

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1043&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/38

Start Page


  • 411

End Page


  • 418