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http://dx.doi.org/10.12989/cac.2012.10.3.259

Reinforced concrete corbels strengthened with carbon fiber reinforced plastics  

Lu, Wen-Yao (Department of Interior Design, China University of Technology)
Yu, Hsin-Wan (Department of Civil Engineering and Hazard Mitigation Design, China University of Technology)
Chen, Chun-Liang (Department of Interior Design, China University of Technology)
Yang, Tzong-Hwan (Department of Interior Design, China University of Technology)
Lin, Yu-Sin (Department of Interior Design, China University of Technology)
Publication Information
Computers and Concrete / v.10, no.3, 2012 , pp. 259-276 More about this Journal
Abstract
A total of nine reinforced concrete corbels were tested, in this study. Six were externally strengthened with carbon fiber reinforced plastics (CFRP), in the horizontal direction. The cross-sectional area of CFRP and the shear span-to-effective depth ratios are the parameters considered, in this study. Test results indicate that the higher the cross-sectional area of CFRP, the higher is the shear strength of the corbels, and the lower the shear span-to-effective depth ratios, the higher is the shear strength of corbels. The shear strength predicted by the design provisions in section 11.8 of the ACI Code, the strut-and-tie model in Appendix A of the ACI Code, and the softened strut-and-tie (SST) model were compared with the test results. The comparisons show that both the strut-and-tie model in Appendix A of the ACI Code, and the SST model can accurately predict the shear strength of reinforced concrete corbels, strengthened with CFRP.
Keywords
reinforced concrete corbel; shear strength; carbon fiber reinforced plastics (CFRP);
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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1 Wong, F.J. and Vecchio, F.J. (2003), "Towards modeling of reinforced concrete members with externally bonded fiber-reinforced polymer composites", ACI Struct. J., 100(1), 47-55.
2 Yong, Y.K. and Balaguru, P. (1994), "Behavior of reinforced high-strength-concrete corbels", J. Struct. Eng.-ASCE, 120(4), 1182-1201.   DOI   ScienceOn
3 American Concrete Institute (2008), Building code requirements for structural concrete (ACI 318-08) and Commentary (ACI 318R-08), Farmington Hills, Mich.
4 Elwan, S.K. and Rashed, A.S. (2011), "Experimental behavior of eccentrically load R.C. short columns strengthened using CFRP wrapping", Struct. Eng. Mech., 39(2), 207-221.   DOI
5 Fattuhi, N.I. (1994), "Reinforced corbels made with plain and fibrous concrete", ACI Struct. J., 91(5), 530-536.
6 Foster, S.J., Powell, R.E. and Selim, H.S. (1996), "Performance of high-strength concrete corbels", ACI Struct. J., 93(5), 555-563.
7 Hwang, S.J., Lu, W.Y. and Lee, H.J. (2000), "Shear strength prediction for reinforced concrete corbels", ACI Struct. J., 97(4), 543-552.
8 Hwang, S.J. and Lee, H.J. (2002), "Strength prediction for discontinuity regions failing in diagonal compressions by softened strut-and-tie model", J. Struct. Eng.-ASCE, 128(12), 1519-1526.   DOI   ScienceOn
9 Her, G.J. (1990), A study of reinforced high-strength concrete corbels, Master's Thesis, Department of Construction Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan (in Chinese).
10 Kriz, L.B. and Raths, C.H. (1965), "Connections in precast concrete structures - strength of corbels", PCI J., 10(1), 16-61.   DOI
11 Li, Y.F., Lin, C.T. and Sung, Y.Y. (2003), "A constitutive model for concrete confined with carbon fiber reinforced plastics", Mech. Mater., 35(3), 603-619.   DOI
12 Lu, W.Y. and Lin, I.J. (2009), "Behavior of reinforced concrete corbels", Struct. Eng. Mech., 33(3), 357-371.   DOI
13 Lu, W.Y., Lin, I.J. and Hwang, S.J. (2009), "Shear strength of reinforced concrete corbels", Mag. Concrete Res., 61(10), 807-813.   DOI   ScienceOn
14 Lu, W.Y., Hwang, S.J. and Lin, I.J. (2010), "Deflection prediction for reinforced concrete deep beams", Comput. Concrete, 7(1), 1-16.   DOI
15 Mattock, A.H., Chen, K.C. and Soongswang, K. (1976), "The behavior of reinforced concrete corbels", PCI J., 21(2), 52-77.   DOI
16 Russo, G., Venir, R., Pauletta, M. and Somma, G. (2006), "Reinforced concrete corbels-shear strength model and design formula", ACI Struct. J., 103(1), 3-10.
17 Shuraim, A.B. (2011), "Efficacy of CFRP configurations for shear of RC beams: experimental and NLFE", Struct. Eng. Mech., 39(3), 361-382.   DOI