Structural Engineering and Mechanics

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Nonlinear analysis on concrete-filled rectangular tubular composite columns

  • Lu, Xilin (Research Institute of Engineering Structures, Tongji University) ;
  • Yu, Yong (Research Institute of Engineering Structures, Tongji University) ;
  • Kiyoshi, Tanaka (Technical Research Institute of Fujita Corporation) ;
  • Satoshi, Sasaki (Technical Research Institute of Fujita Corporation)
  • Published : 2000.12.25
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Abstract

A 3D nonlinear finite element computation model is presented in order to analyze the concrete filled rectangular tubular (CFRT) composite structures. The concrete material model is based on a hypo-elastic orthotropic approach while the elasto-plastic hardening model is employed for steel element. The comparisons between experimental and analytical results show that the proposed model is a relatively simple and effective one. The analytical results show that the capacity of inner concrete of CFRT column mainly depends on the two diagonal zones, and the confining effect of CFRT section is mainly concentrated on the corner zones. At the ultimate state, the side concrete along the section cracks seriously, and the corner concrete softens with the increase of compressive strains until failure.

Keywords

References

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Cited by

  1. Finite element linear and nonlinear, static and dynamic analysis of structural elements, an addendum vol.19, pp.5, 2002, https://doi.org/10.1108/02644400210435843
  2. Modelling and experimental verification on concrete-filled steel tubular columns with L or T section vol.1, pp.2, 2007, https://doi.org/10.1007/s11709-007-0017-z
  3. Internal curing effect on strength of recycled concrete and its enhancement in concrete-filled thin-wall steel tube vol.153, 2017, https://doi.org/10.1016/j.conbuildmat.2017.07.117