Steel and Composite Structures

  • 제14권5호
  • /
  • Pages.453-472
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  • 2013
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Structural behavior of CFRP strengthened concrete-filled steel tubes columns under axial compression loads

  • 투고 : 2012.06.05
  • 심사 : 2013.04.22
  • 발행 : 2013.05.25
⟨ 이전 논문 다음 논문 ⟩

초록

This paper presents the structural behavior of CFRP (carbon fiber reinforced polymer) strengthened CFT (concrete-filled steel tubes) columns under axial loads. Circular and square specimens were selected to investigate the retrofitting effects of CFRP sheet on CFT columns. Test parameters are cross section of CFT, D/t (B/t) ratios, and the number of CFRP layers. The load and ductility capacities were evaluated for each specimen. Structural behavior comparisons of circular and rectangular section will be represented in the experimental result discussion section. Finally, ultimate load formula of CFRP strengthened CFT will be proposed to calculate the ultimate strength of CFRP strengthened circular CFT. The prediction values are in good agreement with the test results obtained in this study and in the literature.

키워드

과제정보

연구 과제 주관 기관 : Ministry of Knowledge Economy

참고문헌

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  4. Wave propagation in a concrete filled steel tubular column due to transient impact load vol.17, pp.6, 2014, https://doi.org/10.12989/scs.2014.17.6.891
  5. Axial compressive behaviour of circular CFFT: Experimental database and design-oriented model vol.21, pp.4, 2016, https://doi.org/10.12989/scs.2016.21.4.921
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  11. Behavior of Circular Fiber-Reinforced Polymer-Steel-Confined Concrete Columns Subjected to Reversed Cyclic Loads: Experimental Studies and Finite-Element Analysis vol.145, pp.9, 2019, https://doi.org/10.1061/(asce)st.1943-541x.0002373
  12. Experimental investigations of concrete-filled steel tubular columns confined with high-strength steel wire vol.22, pp.13, 2013, https://doi.org/10.1177/1369433219850645
  13. Monotonic axial compressive behaviour and confinement mechanism of square CFRP-steel tube confined concrete vol.217, pp.None, 2013, https://doi.org/10.1016/j.engstruct.2020.110802
  14. Static strength of CFRP-strengthened tubular TT-joints containing initial local corrosion defect vol.236, pp.None, 2013, https://doi.org/10.1016/j.oceaneng.2021.109484
  15. Compression Performance of Square Steel Tubular Members Externally Enfolded with Carbon Fiber-Reinforced Polymer Sheet vol.27, pp.2, 2013, https://doi.org/10.1061/(asce)sc.1943-5576.0000664