Computers and Concrete

  • 제12권4호
  • /
  • Pages.413-429
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  • 2013
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  • 1598-8198(pISSN)
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  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Nonlinear finite element modeling of FRP-wrapped UHPC columns

  • Guler, Soner (Faculty of Civil Engineering, Istanbul Technical University) ;
  • Copur, Alperen (Faculty of Civil Engineering, Istanbul Technical University) ;
  • Aydogan, Metin (Faculty of Civil Engineering, Istanbul Technical University)
  • 투고 : 2012.10.24
  • 심사 : 2013.05.11
  • 발행 : 2013.10.25
⟨ 이전 논문 다음 논문 ⟩

초록

The primary aim of this study is to develop a three dimensional finite element (FE) model to predict the axial stress-strain relationship and ultimate strength of the FRP-wrapped UHPC columns by comparing experimental results. The reliability of four selected confinement models and three design codes such as ACI-440, CSA-S806-02, and ISIS CANADA is also evaluated in terms of agreement with the experimental results. Totally 6 unconfined and 36 different types of the FRP-wrapped UHPC columns are tested under monotonic axial compression. The values of ultimate strengths of FRP-wrapped UHPC columns obtained from the experimental results are compared and verified with finite element (FE) analysis results and the design codes mentioned above. The concrete damage plasticity model (CDPM) in Abaqus is utilized to represent the confined behavior of the UHPC. The results indicate that agreement between the test results and the non-linear FE analysis results is highly satisfactory. The CSA-S806-02 design code is considered more reliable than the ACI-440 and the ISIS CANADA design codes to calculate the ultimate strength of the FRP-wrapped UHPC columns. None of the selected confinement models that are developed for FRP-wrapped low and normal strength concrete columns can safely predict the ultimate strength of FRP-wrapped UHPC columns.

키워드

참고문헌

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피인용 문헌

  1. Flexural behavior of UHPC-RC composite beam vol.22, pp.2, 2016, https://doi.org/10.12989/scs.2016.22.2.387
  2. A Design-Oriented Combined Model (7 MPa to 190 MPa) for FRP-Confined Circular Short Columns vol.7, pp.12, 2015, https://doi.org/10.3390/polym7101489
  3. Computer based estimation of backbone curves for hysteretic Response of reinforced concrete columns under static cyclic lateral loads vol.14, pp.2, 2014, https://doi.org/10.12989/cac.2014.14.2.193