Steel and Composite Structures

  • 제10권6호
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  • Pages.501-516
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  • 2010
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Experimental study on reinforced high-strength concrete short columns confined with AFRP sheets

  • Wu, Han-Liang (School of Civil Engineering, Beijing Jiaotong University) ;
  • Wang, Yuan-Feng (School of Civil Engineering, Beijing Jiaotong University)
  • 투고 : 2010.01.23
  • 심사 : 2010.10.29
  • 발행 : 2010.11.25
⟨ 이전 논문 다음 논문 ⟩

초록

This paper is aiming to study the performances of reinforced high-strength concrete (HSC) short columns confined with aramid fibre-reinforced polymer (AFRP) sheets. An experimental program, which involved 45 confined columns and nine unconfined columns, was carried out in this study. All the columns were circular in cross section and tested under axial compressive load. The considered parameters included the concrete strength, amount of AFRP layers, and ratio of hoop reinforcements. Based on the experimental results, a prediction model for the axial stress-strain curves of the confined columns was proposed. It was observed from the experiment that there was a great increment in the compressive strength of the columns when the amount of AFRP layers increases, similar as the ultimate strain. However, these increments were reduced as the concrete strength increasing. Comparisons with other existing prediction models present that the proposed model can provide more accurate predictions.

키워드

참고문헌

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  3. An Artificial Neural Networks model for the prediction of the compressive strength of FRP-confined concrete circular columns vol.140, 2017, https://doi.org/10.1016/j.engstruct.2017.02.047
  4. Behavior of flax FRP tube encased recycled aggregate concrete with clay brick aggregate vol.136, 2017, https://doi.org/10.1016/j.conbuildmat.2017.01.046
  5. FRP-confined concrete in circular sections: Review and assessment of stress–strain models vol.49, 2013, https://doi.org/10.1016/j.engstruct.2012.06.010
  6. Improving strength, stiffness and ductility of CFDST columns by external confinement vol.75, 2014, https://doi.org/10.1016/j.tws.2013.10.009
  7. Behavior in compression of concrete cylinders externally wrapped with basalt fibers vol.69, 2015, https://doi.org/10.1016/j.compositesb.2014.10.008
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  10. Uni-axial behaviour of normal-strength concrete-filled-steel-tube columns with external confinement vol.3, pp.6, 2012, https://doi.org/10.12989/eas.2012.3.6.889
  11. Peak Strength Expression for Concrete Confined with Fiber-Reinforced Polymer vol.4, pp.3, 2018, https://doi.org/10.1061/ajrua6.0000977
  12. Evaluation of Existing Stress-Strain Models and Modeling of PET FRP-Confined Concrete vol.31, pp.12, 2010, https://doi.org/10.1061/(asce)mt.1943-5533.0002941
  13. Design-oriented strength and strain models for GFRP-wrapped concrete vol.26, pp.3, 2010, https://doi.org/10.12989/cac.2020.26.3.293
  14. Cyclic response of rectangular RC columns retrofitted by hybrid FRP sheets vol.28, pp.None, 2010, https://doi.org/10.1016/j.istruc.2020.09.016
  15. New mechanics-based confinement model and stress-strain relationship for analysis and design of concrete columns wrapped with FRP composites vol.33, pp.None, 2010, https://doi.org/10.1016/j.istruc.2021.06.012