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Experimental study and modelling of CFRP-confined damaged and undamaged square RC columns under cyclic loading
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 Title & Authors
Experimental study and modelling of CFRP-confined damaged and undamaged square RC columns under cyclic loading
Su, Li; Li, Xiaoran; Wang, Yuanfeng;
While the cyclic behaviour of fiber-reinforced polymer (FRP)-confined columns is studied rather extensively, the cyclic response especially the energy dissipation of FRP-confined damaged and undamaged square RC columns is not yet fully understood. In this paper, an experimental and numerical investigation was conducted to study the cyclic behavior of two different types of Carbon FRP (CFRP)-confined square RC columns: strengthened and repaired. The main variables investigated are initial damage, confinement of CFRP, longitudinal steel reinforcement ratio. The experimental results show that lower initial damage, added confinement with CFRP and longitudinal reinforcement enhance the ductility, energy dissipation capacity and strength of the columns, decrease the stiffness and strength degradation rates of all CFRP-confined square RC columns. Two hysteretic constitutive models were developed for confined damaged and undamaged concrete and cast into the non-linear beam-column fiber-based models in the software Open System for Earthquake Engineering Simulation (OpenSees) to analyze the cyclic behavior of CFRP-confined damaged and undamaged columns. The results of the numerical models are in good agreement with the experiments.
reinforced concrete columns;carbon fiber-reinforced polymers (CFRP);cyclic loads;energy dissipation;finite element analysis (FEA);
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Advances in concrete construction, 2016. vol.4. 4, pp.319-332 crossref(new window)
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Bae, S. and Bayrak, O. (2008), "Plastic hinge length of reinforced concrete columns", ACI Struct. J., 105(3), 290-300.

Biskinis, D. and Fardis, M.N. (2013), "Models for FRP-wrapped rectangular RC columns with continuous or lap-spliced bars under cyclic lateral loading", Eng. Struct., 57, 199-212. crossref(new window)

Cheng, C.T., Yang, J.C., Yeh, Y.K. and Chen, S.E. (2003), "Seismic performance of repaired hollow-bridge piers", Constr. Build. Mater., 17(5), 339-351. crossref(new window)

Filippou, F.C., Popov, E.P. and Bertero, V.V. (1983), Effects of Bond Deterioration on Hysteretic Behavior of Reinforced Concrete Joints, Report No. EERC 83-19; Earthquake Engineering Research Center, Berkeley, CA, USA.

Galal, K., Arafa, A. and Ghobarah, A. (2005), "Retrofit of RC square short columns", Eng. Struct., 27(5), 801-813. crossref(new window)

Haroun, M. and Elsanadedy, H. (2005), "Behavior of cyclically loaded squat reinforced concrete bridge columns upgraded with advanced composite-material jackets", J. Bridge Eng., 10(6), 741-748. crossref(new window)

Iacobucci, R.D., Sheikh, S.A. and Bayrak, O. (2003), "Retrofit of square concrete columns with carbon fiber-reinforced polymer for seismic resistance", ACI Struct. J., 100(6), 785-794.

Idris, Y. and Ozbakkaloglu, T. (2013), "Seismic behavior of high-strength concrete-filled FRP tube columns", J. Compos. Constr., 17(6), 04013013. crossref(new window)

Lam, L. and Teng, J.G. (2003), "Design-oriented stress-strain model for FRP-confined concrete", Constr. Build. Mater., 17(6), 471-489. crossref(new window)

Li, X.R., Wang, Y.F. and Su, L. (2014), "Damping determination of FRP-confined reinforced concrete columns", Comput. Concrete, 14(2), 163-174. crossref(new window)

Lim, J.C. and Ozbakkaloglu, Y. (2013), "Confinement model for FRP-confined high-strength concrete", J. Compos. Constr., 18(4), 04013058.

Lim, J.C. and Ozbakkaloglu, Y. (2015), "Hoop strains in FRP-confined concrete columns: Experimental observations", Mater. Struct., 48(9), 2839-2854. crossref(new window)

Ozbakkaloglu, T. and Saatcioglu, M. (2006), "Seismic behavior of high strength concrete columns confined by fiber-reinforced polymer tubes", J. Compos. Constr., 10(6), 538-549. crossref(new window)

Ozbakkaloglu, T. and Saatcioglu, M. (2007), "Seismic performance of square high-strength concrete columns in FRP stay-in-place formwork", J. Struct. Eng., 133(1), 44-56. crossref(new window)

Pam, H.J. and Ho, J.C.M. (2009), "Length of critical region for confinement steel in limited ductility highstrength reinforced concrete columns", Eng. Struct., 31(12), 2896-2908. crossref(new window)

Qian, J.C. and Zhou, J.F. (1989), "Two concrete damage model and their application", J. Hohai Univ., 17(3), 40-47.

Realfonzo, R. and Napoli, A. (2009), "Cyclic behavior of RC columns strengthened by FRP and steel devices", J. Struct. Eng., 135(10), 1164-1176. crossref(new window)

Saadatmanesh, H., Ehsani, M.R. and Jin, L. (1997), "Repair of earthquake-damaged RC columns with FRP wraps", ACI Struct. J., 94(2), 206-215.

Saiidi, M. and Cheng, Z. (2004), "Effectiveness of composites in earthquake damage repair of reinforced concrete flared columns", J. Compos. Constr., 8(4), 306-314. crossref(new window)

Scott, B.D., Park, R. and Priestley, M.J.N. (1982), "Stress-strain behavior of concrete confined by overlapping hoops at low and high strain rates", ACI Struct. J., 79(1), 13-27.

Sheikh, S.A. and Yau, G. (2002), "Seismic behavior of concrete columns confined with steel and fiberreinforced polymers", ACI Struct. J., 99(1), 72-80.

Taucer, F., Spacone, E. and Filippou, F.C. (1991), A Fiber Beam-column Element for Seismic Response Analysis of Reinforced Concrete Structures, (Vol. 91, No. 17), Earthquake Engineering Research Center, College of Engineering, University of California, Berkeley, CA, USA.

Wang, Y.F. and Li, X.R. (2013), "Non-linear damping of FRP-confined damaged reinforced concrete columns", Eng. Struct., 57, 289-295. crossref(new window)

Wu, Y., Liu, T. and Wang, L. (2008), "Experimental investigation on seismic retrofitting of square RC columns by carbon FRP sheet confinement combined with transverse short glass FRP bars in bored holes", J. Compos. Constr., 12(1), 53-60. crossref(new window)

Xiao, Y. and Ma, R. (1997), "Seismic retrofit of RC circular columns using prefabricated composite jacketing", J. Struct. Eng., 123(10), 1357-1364. crossref(new window)

Ye, L.P., Zhang, K., Zhao, S.H. and Feng, P. (2003), "Experimental study on seismic strengthening of RC columns with wrapped CFRP sheets", Constr. Build. Mater., 17(6), 499-506. crossref(new window)