Steel and Composite Structures

  • 제25권5호
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  • Pages.545-556
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  • 2017
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
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Axial load behavior and stability strength of circular tubed steel reinforced concrete (SRC) columns

  • Yan, Biao (Department of Engineering Mechanics, School of Civil Engineering and Mechanics, Lanzhou University) ;
  • Liu, Jiepeng (Department of Civil Engineering, School of Civil Engineering, Chongqing University) ;
  • Zhou, Xuhong (Department of Civil Engineering, School of Civil Engineering, Chongqing University)
  • 투고 : 2017.02.24
  • 심사 : 2017.09.14
  • 발행 : 2017.12.10
⟨ 이전 논문 다음 논문 ⟩

초록

The tubed steel reinforced concrete (SRC) column is a composite column in which the outer steel tube is mainly used to provide confinement on the core concrete. This paper presents experimental and analytical studies on the behavior of circular tubed SRC (TSRC) columns subjected to axial compression. Eight circular TSRC columns were tested to investigate the effects of length-to-diameter ratio (L/D) of the specimens, diameter-to-thickness ratio (D/t) of the steel tubes, and use of stud shear connectors on the steel sections. Elastic-plastic analysis on the steel tubes was used to investigate the mechanism of confinement on the core concrete. The test results indicated that the tube confinement increased the strength and deformation capacity for both short and slender columns, and the effects on strength were more pronounced for short columns. A nonlinear finite element (FE) model was developed using ABAQUS, in which the nonlinear material behavior and initial geometric imperfection were included. Good agreement was achieved between the predicted results using the FE model and the test results. The test and FE results were compared with the predicted strengths calculated by Eurocode 4 and the AISC Standard. Based on the analytical results, a new design method for this composite column was proposed.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundations of China

참고문헌

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피인용 문헌

  1. Behaviors of RPC-filled double skin steel tubular stub columns under axial compression loading vol.40, pp.6, 2021, https://doi.org/10.12989/scs.2021.40.6.839