Nonlinear Finite Element Analysis of the Flexural Reinforced Concrete Beam Strengthened with CFRP Sheets

Abstract:

Based on the tested data, the ANSYS finite element analysis software was adopted to establish the finite element model for the concrete beam nonlinear analysis.The finite element models were developed using 3-D solid element for concrete and shell element for the Carbon Fiber Reinforced Ploymer (CFRP) sheet. The results obtained from the ANSYS were compared with the experimental data for two strengthened beams with different thickness CFRP sheet. The comparisons were made for the curves of load-midspan deflection, yielding load and ultimate load. Models were calculated at the same condition as the experimental beams. Two reinforced beams strengthened with CFRP sheet were calculated in four-point bending. The load-deflection curves from the finite element analysis agree well with the experimental results. The average difference in ultimate load for two cases is 5.5%.

• Periodical: Applied Mechanics and Materials (Volumes 438-439)
• Pages: 467-471
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.438-439.467
• Online since: October 2013
• Authors: Jun Wen Zhou, Feng Hua Zhao, Yong Sheng Qi, Wei Cheng Shi
• Keywords: Carbon Fiber Reinforced Polymer/Plastic (CFRP), Finite Element Analysis (FEA), Reinforced Concrete (RC) Beam, Strain, Stress

References

[1] J. Teng, J. Chen, S. Smith, FRP Strengthened RC Structures, John Wiley and Sons, UK, (2002).

[2] H. Saadatmanesh, M. R. Ehsani, RC beams strengthened with GFRP plates I: experimental study, J Struct Eng, 11 (1991) 3417-33.

DOI: 10.1061/(asce)0733-9445(1991)117:11(3417)

[3] W. Xue, Y. Tan, L. Zeng, Flexural response predictions of reinforced concrete beams strengthened with prestressed CFRP plates, Compos Struct, 92 (2010) 612-22.

DOI: 10.1016/j.compstruct.2009.09.036

[4] De Lorenzis L, J. Teng, Near-surface mounted FRP reinforcement: An emerging technique for strengthening structures, Composites Part B, 38 (2007) 119-43.

DOI: 10.1016/j.compositesb.2006.08.003

[5] A. Hajihashemi, D. Mostofinejad, M. Azhari, Investigation of RC beams strengthened with prestressed NSM CFRP laminates, J Compos Constr, 6 (2011) 887-95.

DOI: 10.1061/(asce)cc.1943-5614.0000225

[6] P. Yu, P. F. Silva, A. Nanni, Flexural strength of reinforced concrete beams strengthened with prestressed carbon fiber-reinforced polymer sheets—part II, ACI Struct J, 1 (2008) 11-20.

DOI: 10.14359/19064

[7] Y. Wu, J. Yan, Y. Zhou, et al, Ultimate strength of reinforced concrete beams retrofitted with hybrid bonded fiber-reinforced polymer, ACI Struct J, 4 (2010) 451-60.

DOI: 10.14359/51663818

[8] GB50010-2010, Code for Design of Concrete Structures, China Building Industry Press, Beijing, (2010).

[9] J. Zhang, The experimental study of carbon fiber stengthening reinforced concrete beams and slabs, bending properties, Masters, degree thesis, Chongqing university, Chongqing, (2007).