Steel and Composite Structures

  • 제23권6호
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  • Pages.669-682
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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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DOI QR코드

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Analysis of circular steel tube confined UHPC stub columns

  • Hoang, An Le (Faculty of Civil and Environmental Engineering, Institute of Structural Engineering, University of Kassel) ;
  • Fehling, Ekkehard (Faculty of Civil and Environmental Engineering, Institute of Structural Engineering, University of Kassel)
  • 투고 : 2016.06.13
  • 심사 : 2017.02.20
  • 발행 : 2017.04.30
⟨ 이전 논문 다음 논문 ⟩

초록

The use of ultra high performance concrete (UHPC) in composite columns offers numerous structural benefits, and has received recent research attention. However, the information regarding the behavior of steel tube confined concrete (STCC) columns employing UHPC has been extremely limited. Thus, this paper presents an overview of previous experimental studies on circular STCC columns with taking into account various concrete strengths to point out their distinctive features. The effect of the confinement factor and the diameter to thickness ratio on both strength and ductility in circular STCC columns employing UHPC was investigated. The applicability of current design codes such as EC4, AISC, AIJ and some available analytical models for concrete confined by steel tube was also validated by the comparison of ultimate loads between the prediction and the test results of Schneider (2006) and Xiong (2012). To predict the stress-strain curves for confined UHPC in circular STCC stub columns, a simplified model was proposed and verified by the comparison with experimental stress-strain curves.

키워드

과제정보

연구 과제번호 : Behavior of circular steel tube confined UHPC and UHPFRC columns

연구 과제 주관 기관 : University of Kassel

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피인용 문헌

  1. Axial strength prediction of steel tube confined concrete columns using a hybrid machine learning model vol.36, pp.None, 2022, https://doi.org/10.1016/j.istruc.2021.12.054