Computers and Concrete

  • 제8권2호
  • /
  • Pages.193-206
  • /
  • 2011
  • /
  • 1598-8198(pISSN)
  • /
  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Modeling of nonlinear cyclic response of shear-deficient RC T-beams strengthened with side bonded CFRP fabric strips

  • Hawileh, Rami A. (Department of Civil Engineering, American University of Sharjah) ;
  • Abdalla, Jamal A. (Department of Civil Engineering, American University of Sharjah) ;
  • Tanarslan, Murat H. (Department of Civil Engineering, Dokuz Eylul University) ;
  • Naser, Mohannad Z. (Department of Civil Engineering, American University of Sharjah)
  • 투고 : 2010.04.16
  • 심사 : 2010.08.18
  • 발행 : 2011.04.25
⟨ 이전 논문 다음 논문 ⟩

초록

The use of Carbon Fiber Reinforced Polymers (CFRP) to strengthen reinforced concrete beams under bending and shear has gained rapid growth in recent years. The performance of shear strengthened beams with externally bonded CFRP laminate or fabric strips is raising many concerns when the beam is loaded under cyclic loading. Such concerns warrant experimental, analytical and numerical investigation of such beams under cyclic loading. To date, limited investigations have been carried out to address this concern. This paper presents a numerical investigation by developing a nonlinear finite element (FE) model to study the response of a cantilever reinforced concrete T-beam strengthened in shear with side bonded CFRP fabric strips and subjected to cyclic loading. A detailed 3D nonlinear finite element model that takes into account the orthotropic nature of the polymer's fibers is developed. In order to simulate the bond between the CFRP sheets and concrete, a layer having the material properties of the adhesive epoxy resin is introduced in the model as an interface between the CFRP sheets and concrete surface. Appropriate numerical modeling strategies were used and the response envelope and the load-displacement hysteresis loops of the FE model were compared with the experimental response at all stages of the cyclic loading. It is observed that the responses of the FE beam model are in good agreement with those of the experimental test. A parametric study was conducted using the validated FE model to investigate the effect of spacing between CFRP sheets, number of CFRP layers, and fiber orientation on the overall performance of the T-beam. It is concluded that successful FE modeling provides a practical and economical tool to investigate the behavior of such strengthened beams when subjected to cyclic loading.

키워드

참고문헌

  1. ACI 440.2R-08 (2008), "Guide for the design and construction of externally bonded frp systems for strengthening concrete structures", ACI Committee 440.
  2. ANSYS- Release Version 11. (2007), "A finite element computer software and user manual for nonlinear structural analysis", ANSYS, Inc. Canonsburg, PA.
  3. Alzoubi, F. and Zhengliang, L. (2007), "Overview shear strengthening of RC beams with externally bonded FRP composites", J. Appl. Sci., 7(8), 1093-1106. https://doi.org/10.3923/jas.2007.1093.1106
  4. Arduini, M., Di Tommaso, A. and Nanni, A. (1997), "Brittle failure in FRP plate and sheet bonded beams", ACI Struct. J., 94(4), 363-370.
  5. Carolin, A. (2001), "Strengthening of concrete structures with CFRP: shear strengthening and full-scale applications", Licentiate Thesis 2001:01, Lulea University of Technology, Department of Civil and Mining Engineering, Sweden.
  6. Chajes, M., Januska, T., Mertz, D., Thomson, T. and Finch, W. (1995), "Shear strengthening of reinforced concrete beams using externally applied composite fabrics", ACI Struct. J., 92(3), 295-303.
  7. Gamino, A.L., Bittencourt, T.N. and Sousa, J.L.A. (2009), "Finite element computational modeling of externally bonded CFRP composites flexural behavior in RC beams", Comput. Concrete, 6(3), 187-202. https://doi.org/10.12989/cac.2009.6.3.187
  8. Hawileh, R.A., Abdalla, J.A. and Murat Tanarslan, H. (2009a), "Nonlinear finite element analysis of RC T-beams with side bonded CFRP subjected to cyclic loading", The first International Conference on Computational Technologies in Concrete Structures, Jeju, Korea, May 24-27, 2009.
  9. Hawileh, R.A., Abdalla, JA. and Murat Tanarslan, H. (2009b), "Finite element analysis of shear deficient reinforced concrete beam subjected to dynamic loading", Proceedings of SEECCM 2009 2nd South-East European Conference on Computational Mechanics, Rhodes, Greece.
  10. Hoque, M., Rattanawangcharoen, N., Shah, A. H. and Desai, Y. M. (2007), "3D nonlinear mixed finite-element analysis of RC beams and plates with and without FRP reinforcement", Comput. Concrete, 4(2), 135-156. https://doi.org/10.12989/cac.2007.4.2.135
  11. Kachlakev, D.I. (2002), "Finite element analysis and model validation of shear deficient reinforced concrete beams strengthened with GFRP laminates", Third International Conference on Composites in Infrastructure, San Francisco, California.
  12. Khalifa, A. and Nanni, A. (2002), "Rehabilitation of rectangular simply supported RC beams with shear deficiencies using CFRP composites", Constr. Build. Mater., 16, 135-146. https://doi.org/10.1016/S0950-0618(02)00002-8
  13. Kim, S.H. and Aboutaha, R.S. (2004), "Finite element analysis of carbon fiber-reinforced polymer (CFRP) strengthened reinforced concrete beams", Comput. Concrete, 1(4), 401-416. https://doi.org/10.12989/cac.2004.1.4.401
  14. Lee, H.K., Ha, S.K. and Afzal, M. (2008), "Finite element analysis of shear-deficient RC beams strengthened with CFRP strips/sheets", Struct. Eng. Mech. 30(2), 247-261.
  15. Norris, T. Saadatmanesh, H. and Ehsani, M. (1997), "Shear and flexural strengthening of R/C beams with carbon fiber sheets", J. Struct. Eng., 123(7), 903-911. https://doi.org/10.1061/(ASCE)0733-9445(1997)123:7(903)
  16. Ritchie, P., Thomas, D., Lu, L. and Conneley, G. (1991), "External reinforcement of concrete beams using fiber reinforced plastics", ACI Struct. J., 88(4), 490-500.
  17. Santhakumar, R., Chandrasekaran, E. and Dhanaraj, R. (2004), "Analysis of retrofitted reinforced concrete shear beams using carbon fiber composites", Electron. J. Struct. Eng., 4, 66-74.
  18. Tanarslan, H.M., Ertutar, Y. and Altin, S. (2008), "The effects of CFRP strips for improving shear capacity of RC beams", J. Reinf. Plast. Comp., 27(12), 1287-1308. https://doi.org/10.1177/0731684407087370
  19. Tedesco, J.W., Stallings J.M. and El-Mihilmy, M. (1999), "Finite element method analysis of a concrete bridge repaired with fiber reinforced plastic laminates", Comput. Struct., 72, 379-407. https://doi.org/10.1016/S0045-7949(99)00010-3

피인용 문헌

  1. Nonlinear behavior of shear deficient RC beams strengthened with near surface mounted glass fiber reinforcement under cyclic loading vol.61, 2014, https://doi.org/10.1016/j.matdes.2014.04.064
  2. Finite element simulation of reinforced concrete beams externally strengthened with short-length CFRP plates vol.45, pp.1, 2013, https://doi.org/10.1016/j.compositesb.2012.09.032
  3. Finite element analysis of strengthened RC beams in shear with aluminum plates vol.147, 2015, https://doi.org/10.1016/j.compstruc.2014.10.009
  4. Effect of flexural CFRP sheets on shear resistance of reinforced concrete beams vol.122, 2015, https://doi.org/10.1016/j.compstruct.2014.12.010
  5. Nonlinear Finite Element Analysis of FRP Strengthened Reinforced Concrete Beams vol.93, pp.4, 2012, https://doi.org/10.1007/s40030-013-0028-9
  6. Finite element modeling of reinforced concrete beams with a hybrid combination of steel and aramid reinforcement vol.65, 2015, https://doi.org/10.1016/j.matdes.2014.10.004
  7. Modeling the shear strength of concrete beams reinforced with CFRP bars under unsymmetrical loading pp.1537-6532, 2018, https://doi.org/10.1080/15376494.2018.1432803
  8. Predicting the response of continuous RC deep beams under varying levels of differential settlement pp.2095-2449, 2018, https://doi.org/10.1007/s11709-018-0506-2
  9. Flexural behavior of reinforced concrete beams externally strengthened with Hardwire Steel-Fiber sheets vol.172, pp.None, 2018, https://doi.org/10.1016/j.conbuildmat.2018.03.225
  10. The Use of Bolted Side Plates for Shear Strengthening of RC Beams: A Review vol.10, pp.12, 2011, https://doi.org/10.3390/su10124658
  11. Nonlinear finite element analysis of bond-slip performance of recycled aggregate concrete filled circular steel tube vol.33, pp.12, 2019, https://doi.org/10.1080/01694243.2019.1602913
  12. Damage mechanics-based modeling approaches for cyclic analysis of precast concrete structures: A comparative study vol.29, pp.6, 2011, https://doi.org/10.1177/1056789519900783
  13. 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
  14. Numerical nonlinear modeling and simulations of high strength reinforced concrete beams using ANSYS vol.7, pp.1, 2011, https://doi.org/10.1007/s41024-021-00155-w