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

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

  1. ACI318 (2002), Building Code Requirements for Structural Concrete, American Concrete Institute
  2. ANSYS, I. (2003), "ANSYS Manual Set", ANSYS Inc., Canonsburg, PA 15317, USA
  3. AS3600 (2001), Concrete Structures, Standards Australia
  4. Baglin, P.S. and Scott, R.H. (2000), "Finite element modelling of reinforced concrete beam-column connections", ACI Struct. J., 97(6), 886-894
  5. FIB (2001), "Externally bonded FRP reinforcement for RC structures", Bulletin 14, Federal Institute of Technology Lausanne, Patras
  6. Kachlakev, D., Miller, T., Chansawat, K. and Potisuk, T. (2001), "Finite element modeling of reinforced concrete structures strengthened with FRP laminates", SPR 316, Oregon Department of Transportation Research Group 200 Hawthorne SE, Suite B-240 Salem, and Federal Highway Administration 400 Seventh Street SW Washington, DC 20590
  7. Kwak, H.G. and Fillippou, F. (1990), "Finite element analysis of reinforced concrete structures under monotonic loads", Tech. Report No.UCB/SEMM-90/14, Dept. of Civil Engineering, University of California, Berkeley, California
  8. Mahini, S.S. and Ronagh, H.R. (2006), "Ductility of FRP-repaired RC beam-column joints", Proc. of the Second International Conference on Concrete Repair, Concrete Solutions, June 27-29, St-Malo, France, 123-130
  9. Mahini, S.S., Ronagh, H.R. and Dux, P.F. (2004), "Flexural repair of RC exterior beam-column joints using CFRP sheet", Proceeding of the Second International Conference on FRP Composites in Civil Engineering, Adelaide, Australia, 8-10 December, 653-658
  10. MBT (2002), "MBrace, composite strengthening system", Master Builders Technologies, MBT (Australia) Pty Ltd
  11. Noor, F.A. and Boswell, L.F. (1992), Small Scale Modelling of Concrete Structures. Elsevier Applied Science
  12. Park, R. and Paulay, T. (1975), Reinforced Concrete Structures, John Wiley and Sons, Christchurch
  13. Parvin, A. and Granata, P. (2000), "Investigation on the effects of fibre composites at concrete joints", Compos. Part B-Eng., 31(6-7), 499-509 https://doi.org/10.1016/S1359-8368(99)00046-3
  14. Paulay, T. and Priestley, M.J.N. (1992), Seismic Design of Reinforced Concrete and Masonry Buildings, John Wiley and Sons, Inc
  15. Ronagh, H.R. and Mahini, S.S. (2005), "Upgrading of reinforced conw3crete joints with carbon fibre sheets", Proceeding of the Second International Conference on Concrete and Development, Tehran, April 30-May 2,2005, CD2-037
  16. Vollum, R.L. (1998), "Design and analysis of reinforced concrete beam-column joints", Ph.D., Imperial College, London
  17. William, K.J. and Warnke, E.D. (1975), "Constitutive model for the triaxial behaviour of concrete", International Association for Bridge and Structural Engineering, ISMES, Bergamo, Italy, 174

피인용 문헌

  1. A preliminary case study of resilience and performance of rehabilitated buildings subjected to earthquakes vol.11, pp.6, 2016, https://doi.org/10.12989/eas.2016.11.6.967
  2. Analytical Assessment of CFRP Retrofitted Reinforced-Concrete Buildings Subjected to Near-Fault Ground Motions vol.30, pp.6, 2016, https://doi.org/10.1061/(ASCE)CF.1943-5509.0000882
  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
  5. Constitutive modeling of reinforced concrete and prestressed concrete structures strengthened by fiber-reinforced plastics vol.92, pp.7, 2010, https://doi.org/10.1016/j.compstruct.2009.11.030
  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
  7. Parametric analyses of square reinforced concrete slabs strengthened by fiber-reinforced plastics vol.53, 2014, https://doi.org/10.1016/j.conbuildmat.2013.11.083
  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
  10. Normalised rotation capacity for deformability evaluation of high-performance concrete beams vol.1, pp.3, 2009, https://doi.org/10.12989/eas.2010.1.3.269
  11. Numerical modelling for monitoring the hysteretic behaviour of CFRP-retrofitted RC exterior beam-column joints vol.38, pp.1, 2011, https://doi.org/10.12989/sem.2011.38.1.027
  12. Debonding failure analysis of FRP-retrofitted concrete panel under blast loading vol.38, pp.4, 2009, https://doi.org/10.12989/sem.2011.38.4.479
  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