Computers and Concrete

  • 제2권5호
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  • Pages.389-409
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  • 2005
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  • 1598-8198(pISSN)
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  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Finite element modeling methodologies for FRP strengthened RC members

  • Park, Sangdon (Department of Civil and Environmental Engineering, Syracuse University) ;
  • Aboutaha, Riyad (Department of Civil and Environmental Engineering, Syracuse University)
  • 투고 : 2005.07.22
  • 심사 : 2005.10.04
  • 발행 : 2005.10.25
⟨ 이전 논문 다음 논문 ⟩

초록

The Finite Element Analysis (FEA) is evidently a powerful tool for the analysis of structural concrete having nonlinearity and brittle failure properties. However, the result of FEA of structural concrete is sensitive to two modeling factors: the shear transfer coefficient (STC) for an open concrete crack and force convergence tolerance value (CONVTOL). Very limited work has been done to find the optimal FE Modeling (FEM) methodologies for structural concrete members strengthened with externally bonded FRP sheets. A total of 22 experimental deep beams with or without FRP flexure or/and shear strengthening systems are analyzed by nonlinear FEA using ANAYS program. For each experimental beams, an FE model with a total of 16 cases of modeling factor combinations are developed and analyzed to find the optimal FEM methodology. Two elements the SHELL63 and SOLID46 representing the material properties of FRP laminate are investigated and compared. The results of this research suggest that the optimal combination of modeling factor is STC of 0.25 and CONVTOL of 0.2. A SOLID 46 element representing the FRP strengthening system leads to better results than a SHELL 63 element does.

키워드

참고문헌

  1. Aboutaha, R. S. (2002), "Ductility of CFRP strengthened concrete bridge girders", Department of Civil and Environmental Engineering, Syracuse University, Syracuse, NY.
  2. ANSYS release 5.7. ANSYS Theory Manual, 12th Edition, SAS IP Inc.
  3. Buyukozturk, O., Hearing, B. and Gunes, O. "FRP strengthening and repair: where do we go from here?", Messachusetts Institute of Technology, Department of Civil Environmental Engineering, Cambridge, MA.
  4. Chaallal, O., Nollet, M. J. and Saleh, K. (1998), "Use of CFRP strips for flexure and shear strengthening of RC members", 2nd Conference on Composites in Infrastructure, June.
  5. Deniaud, C. and Roger Cheng, J. J. (2001), "Shear behavior of reinforced concrete T-beams with externally bonded fiber-reinforced polymer sheets", ACI Struct. J., May-June, 386-394.
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  7. Kachlakev, D. I. (2002), "Finite element analysis and model validation of shear deficient reinforced concrete beams strengthened with GFRP laminate", 3rd Conference on Composites in Infrastructure, June.
  8. Kachlakev, D. I. (2002), "Finite element analysis of historic bridge strengthened with FRP laminates", 3rd Conference on Composites in Infrastructure, June.
  9. Kim, S. (2003), "Ductility of carbon fiber reinforced polymer (CFRP) strengthened reinforced concrete beams", Ph.D. Dissertation, Syracuse University, Syracuse, NY.
  10. MacGreger, J. G. (1997), Reinforced Concrete-Mechanics and Design, 4rd edition, Prentice Hall, 2005.
  11. Park, S. and Aboutaha, R. S. "Analysis of CFRP strengthened concrete bridge piers using the STM approach", Submitted for publication in the ACI Struct. J.

피인용 문헌

  1. A 3D finite element model for reinforced concrete structures analysis vol.4, pp.4, 2011, https://doi.org/10.1590/S1983-41952011000400002
  2. Strut-and-Tie Method for CFRP Strengthened Deep RC Members vol.135, pp.6, 2009, https://doi.org/10.1061/(ASCE)0733-9445(2009)135:6(632)
  3. Thermal-Stress Finite Element Analysis of CFRP Strengthened Concrete Beam Exposed to Top Surface Fire Loading vol.18, pp.3, 2011, https://doi.org/10.1080/15376494.2010.499019
  4. Side-NSM composite technique for flexural strengthening of RC beams vol.20, pp.4, 2005, https://doi.org/10.12989/cac.2017.20.4.439