Steel and Composite Structures

  • 제11권4호
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  • Pages.307-324
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  • 2011
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Fire performance of concrete-filled steel tubular columns strengthened by CFRP

  • Tao, Zhong (Civionics Research Centre, University of Western Sydney) ;
  • Wang, Zhi-Bin (College of Civil Engineering, Fuzhou University) ;
  • Han, Lin-Hai (Department of Civil Engineering, Tsinghua University) ;
  • Uy, Brian (Civionics Research Centre, University of Western Sydney)
  • 투고 : 2010.02.05
  • 심사 : 2011.06.22
  • 발행 : 2011.07.25
⟨ 이전 논문 다음 논문 ⟩

초록

With the increasing use of concrete-filled steel tubes (CFST) as structural members, there is a growing need to provide suitable measures for possible strengthening or repair of these kinds of structural elements. Fibre reinforced polymer (FRP) jacketing is a recent method and is particularly attractive in which it does not significantly increase the section size, and is relatively easy to install. Thus, it can be used to enhance strength and/or ductility of CFST members. Very little information is available on the performance of FRP-strengthened CFST members under fire conditions. This paper is an attempt to study the fire performance of CFST columns strengthened by FRP. The results of fire endurance tests on FRP-strengthened circular CFST columns are presented. Failure modes of the specimens after exposure to fire, temperatures in the cross section, axial deformation and fire resistance of the composite columns are analysed. It is demonstrated that the required fire endurance can be achieved if the strengthened composite columns are appropriately designed.

키워드

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피인용 문헌

  1. Repair of Fire-Exposed Preloaded Rectangular Concrete Columns by Postcompressed Steel Plates vol.140, pp.3, 2014, https://doi.org/10.1061/(ASCE)ST.1943-541X.0000884
  2. Flexural Performances of Square Concrete Filled CFRP-Steel Tubes (S-CF-CFRP-ST) vol.18, pp.8, 2015, https://doi.org/10.1260/1369-4332.18.8.1319
  3. Behaviour of CFRP externally-reinforced circular CFST members under combined tension and bending vol.106, 2015, https://doi.org/10.1016/j.jcsr.2014.12.007
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  5. Fire performance curves for unprotected HSS steel columns vol.15, pp.6, 2013, https://doi.org/10.12989/scs.2013.15.6.705
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  10. 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
  11. Monotonic axial compressive behaviour and confinement mechanism of square CFRP-steel tube confined concrete vol.217, pp.None, 2011, https://doi.org/10.1016/j.engstruct.2020.110802
  12. Hysteretic Behavior of Specimens of Circular Concrete-Filled CFRP-Steel Tubular Beam-Column vol.2021, pp.None, 2011, https://doi.org/10.1155/2021/9933884
  13. Study on load distribution ratio of composite pre-tightened tooth joint by shear nonlinearity vol.40, pp.5, 2021, https://doi.org/10.12989/scs.2021.40.5.747
  14. Analysis of Bearing Capacity of Circular Concrete Filled CFRP-Steel Tubular Beam-Column vol.26, pp.1, 2022, https://doi.org/10.1007/s12205-021-2103-5