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Axial compression behavior and analytical method of L-shaped column composed of concrete-filled square steel tubes

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Abstract

Based on the characteristics of an L-shaped column composed of concrete-filled square steel tubes, the axial compression experiment and nonlinear finite element analysis were carried out to study the mechanical property of the L-shaped column. The load-displacement curve for the L-shaped column, the deflection and load-strain curves for the mono columns were obtained by the axial compression experiment. The results show that the L-shaped column exhibits a flexural-torsional buckling failure mode. The numerical simulation by the finite element analysis shows that the bearing capacity and failure mode are in accordance with those of the axial compression experiment and the feasibility of the finite element analysis is proved. For the calculation of the bearing capacity of the L-shaped column composed of concrete-filled square steel tubes, an analytical method is proposed based on the theory of the elastic stability and spatial truss model. The results of the analytical method are in good agreement with those of the axial compression experiment and the finite element analysis.

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Authors and Affiliations

  1. Ministry of Education, Key Laboratory of Coast Civil Structure Safety (Tianjin University), Tianjin, 300072, China

    Bin Rong  (荣 彬) & Zhihua Chen  (陈志华)

  2. School of Civil Engineering, Tianjin University, Tianjin, 300072, China

    Bin Rong  (荣 彬), Zhihua Chen  (陈志华) & Nan Yang  (杨 楠)

  3. School of Civil Engineering, Xinjiang University, Urumqi, 830046, China

    Bin Rong  (荣 彬)

  4. Department of Civil and Environmental Engineering, Arizona State University, Tempe, 85287, USA

    Fafitis Apostolos

Authors
  1. Bin Rong  (荣 彬)
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  2. Zhihua Chen  (陈志华)
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  3. Fafitis Apostolos
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  4. Nan Yang  (杨 楠)
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Corresponding author

Correspondence to Bin Rong  (荣 彬).

Additional information

Supported by Foundation of Key Laboratory of Coast Civil Structure Safety (Tianjin University), Ministry of Education; Chinese Program for New Century Excellent Talents in University; Seed Foundation of Tianjin University; and Seed Foundation of Xinjiang University.

RONG Bin, born in 1982, male, Dr, lecturer.

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Rong, B., Chen, Z., Apostolos, F. et al. Axial compression behavior and analytical method of L-shaped column composed of concrete-filled square steel tubes. Trans. Tianjin Univ. 18, 180–187 (2012). https://doi.org/10.1007/s12209-012-1766-x

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  • DOI: https://doi.org/10.1007/s12209-012-1766-x

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