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

Conference Paper


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Abstract


  • This paper presents a new numerical model for the nonlinear inelastic analysis of biaxially loaded

    high strength thin-walled rectangular concrete-filled steel tubular (CFST) slender beam-columns. The

    numerical model considers the effects of progressive local buckling, initial geometric imperfections,

    high strength materials and second order. The accurate fiber element method is used to model the

    inelastic behavior of composite cross-sections. Theoretical models are developed that simulate the

    load-deflection responses and strength envelopes of thin-walled rectangular CFST slender beamcolumns

    under biaxial loads. New computational algorithms based on the M ller’s method are

    developed to adjust the depth and orientation of the neutral axis and the curvature at the columns ends

    to obtain nonlinear solutions. The numerical model developed is shown to be an accurate and efficient

    computer simulation and design tool for biaxially loaded high strength thin-walled rectangular CFST

    slender beam-columns with large depth-to-thickness ratios. The verification and applications of the

    numerical model are described in a companion paper.

UOW Authors


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

Publication Date


  • 2012

Citation


  • Liang, Q., Patel, V. Ishvarbhai. & Hadi, M. N. S. (2012). Nonlinear analysis of biaxially loaded high strength rectangular concrete-filled steel tubular slender beam-columns, part I: theory. In J. Richard. Liew & S. Lee (Eds.), Proceedings of the 10th International Conference on Advances in Steel Concrete Composite and Hybrid Structures (pp. 403-410). Singapore: Research Publishing.

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1046&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/41

Start Page


  • 403

End Page


  • 410

Abstract


  • This paper presents a new numerical model for the nonlinear inelastic analysis of biaxially loaded

    high strength thin-walled rectangular concrete-filled steel tubular (CFST) slender beam-columns. The

    numerical model considers the effects of progressive local buckling, initial geometric imperfections,

    high strength materials and second order. The accurate fiber element method is used to model the

    inelastic behavior of composite cross-sections. Theoretical models are developed that simulate the

    load-deflection responses and strength envelopes of thin-walled rectangular CFST slender beamcolumns

    under biaxial loads. New computational algorithms based on the M ller’s method are

    developed to adjust the depth and orientation of the neutral axis and the curvature at the columns ends

    to obtain nonlinear solutions. The numerical model developed is shown to be an accurate and efficient

    computer simulation and design tool for biaxially loaded high strength thin-walled rectangular CFST

    slender beam-columns with large depth-to-thickness ratios. The verification and applications of the

    numerical model are described in a companion paper.

UOW Authors


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

Publication Date


  • 2012

Citation


  • Liang, Q., Patel, V. Ishvarbhai. & Hadi, M. N. S. (2012). Nonlinear analysis of biaxially loaded high strength rectangular concrete-filled steel tubular slender beam-columns, part I: theory. In J. Richard. Liew & S. Lee (Eds.), Proceedings of the 10th International Conference on Advances in Steel Concrete Composite and Hybrid Structures (pp. 403-410). Singapore: Research Publishing.

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1046&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/41

Start Page


  • 403

End Page


  • 410