Structural Engineering and Mechanics

  • 제32권5호
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  • Pages.649-665
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  • 2009
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Numerical modelling of FRP strengthened RC beam-column joints

  • Mahini, Seyed S. (Department of Civil Engineering, Yazd University) ;
  • Ronagh, Hamid R. (Division of Civil Engineering, School of Engineering, The University of Queensland)
  • 투고 : 2007.02.15
  • 심사 : 2009.06.15
  • 발행 : 2009.07.30
⟨ 이전 논문 다음 논문 ⟩

초록

This paper reports part of a comprehensive research study conducted at the University of Queensland on the ability of CFRP web-bonded systems in strengthening an exterior beam-column joint subjected to monotonic loads. One 1/2.2 scaled plain and four CFRP repaired/retrofitted joints subjected to monotonic loads were analysed using the nonlinear finite-element program ANSYS and the results were calibrated against experiments. The ANSYS model was employed in order to account for tension stiffening in concrete after cracking and a modified version of the Hognestad's model was used to model the concrete compressive strength. The stress-strain properties of main steel bars were modelled using multilinear isotropic hardening model and the FRPs were modelled as anisotropic materials. A perfect bond was assumed as nodes were shared between adjacent elements irrespective of their type. Good agreement between the numerical predictions and the experimental observation of the failure mechanisms for all specimens were observed. Closeness of these results proved that the numerical analysis can be used by design engineers for the analysis of web-bonded FRP strengthened beam-column joints with confidence.

키워드

참고문헌

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  3. Seismic Behavior of FRP-Retrofitted Reinforced Concrete Frames vol.18, pp.8, 2014, https://doi.org/10.1080/13632469.2014.926301
  4. Smeared crack material modelling for the nonlinear analysis of CFRP-strengthened historical brick vaults with adobe piers vol.74, 2015, https://doi.org/10.1016/j.conbuildmat.2014.10.033
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  6. Lateral performance and load carrying capacity of an unreinforced, CFRP-retrofitted historical masonry vault – A case study vol.28, pp.1, 2012, https://doi.org/10.1016/j.conbuildmat.2011.08.013
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  8. Strength and ductility of FRP web-bonded RC beams for the assessment of retrofitted beam–column joints vol.92, pp.6, 2010, https://doi.org/10.1016/j.compstruct.2009.09.006
  9. On the FE Modeling of FRP-Retrofitted Beam–Column Subassemblies vol.8, pp.2, 2014, https://doi.org/10.1007/s40069-013-0047-y
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  13. Design for moment redistribution in FRP plated RC beams vol.38, pp.6, 2009, https://doi.org/10.12989/sem.2011.38.6.697
  14. Web-bonded FRPs for relocation of plastic hinges away from the column face in exterior RC joints vol.93, pp.10, 2009, https://doi.org/10.1016/j.compstruct.2011.04.002
  15. A study on transverse vibration characteristics of a sandwich plate with asymmetrical faces vol.40, pp.4, 2009, https://doi.org/10.12989/sem.2011.40.4.501
  16. Concurrent flexural strength and deformability design of high-performance concrete beams vol.40, pp.4, 2009, https://doi.org/10.12989/sem.2011.40.4.541
  17. Investigation of the interior RC beam-column joints under monotonic antisymmetrical load vol.13, pp.6, 2019, https://doi.org/10.1007/s11709-019-0572-0
  18. Modeling Strategies of Finite Element Simulation of Reinforced Concrete Beams Strengthened with FRP: A Review vol.5, pp.1, 2021, https://doi.org/10.3390/jcs5010019