Steel and Composite Structures

  • 제22권2호
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  • Pages.217-234
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  • 2016
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Studies on T-Shaped composite columns consist of multi separate concrete-filled square tubular steel sections under eccentric axial load

  • Rong, Bin (Department of Civil Engineering, Tianjin University) ;
  • You, Guangchao (Department of Civil Engineering, Tianjin University) ;
  • Zhang, Ruoyu (Department of Civil Engineering, Tianjin University) ;
  • Feng, Changxi (Department of Civil Engineering, Tianjin University) ;
  • Liu, Rui (Department of Civil Engineering, Tianjin University)
  • 투고 : 2016.06.12
  • 심사 : 2016.09.29
  • 발행 : 2016.10.10
⟨ 이전 논문 다음 논문 ⟩

초록

In order to investigate mechanical properties and load-bearing capacity of T-shaped Concrete-Filled Square Steel Tubular (TCFST) composite columns under eccentric axial load, three T-shaped composite columns were tested under eccentric compression. Experimental results show that failure mode of the columns under eccentric compression was bending buckling of the whole specimen, and mono column performs flexural buckling. Specimens behaved good ductility and load-bearing capacity. Nonlinear finite element analysis was also employed in this investigation. The failure mode, the load-displacement curve and the ultimate bearing capacity of the finite element analysis are in good agreement with the experimental ones. Based on eccentric compression test and parametric finite element analysis, the calculation formula for the equivalent slenderness ratio was proposed and the bearing capacity of TCFST composite columns under eccentric compression was calculated. Results of theoretical calculation, parametric finite element analysis and eccentric compression experiment accord well with each other, which indicates that the theoretical calculation method of the bearing capacity is advisable.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundations of China, Natural Science Foundation of Tianjin City

참고문헌

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