Effect of Steel Confinement on Behavior of Reinforced Concrete Frame

Document Type: Regular Paper

Authors

Department of Civil Engineering, Semnan Branch, Islamic Azad University

Abstract

The strength and ductility of concrete are improved under multi-axial compressive stress due to confinement effect. Some effective parameters for concrete confinement are longitudinal and transverse steel reinforcement. Some stress-strain relations for confined concrete with steel reinforcement have been proposed by different researchers. In this paper, various stress strain models with considering the steel confinement effect are reviewed briefly and used for simulating the lateral behavior of on an experimental reinforced concrete frame. Envelope curves, tension damage, yielding patterns, ductility ratio and energy absorption of the frames are discussed. Results from the finite element analysis compared with experimental findings show that in the case of lateral load and displacement, the analytical models which were presented by Fafitis et al. and Muguruma et al. had more compatibility with experimental results and the difference is less than 10%. Energy absorption of the model which was proposed by Khaje Samani & Attard had the most compatibility with experimental results and difference is about 1%.

Keywords

Main Subjects


[1] Naderpour, H., Kheyroddin A., Ghodrati Amiri, G. (2010). “Prediction of FRP-confined compressive strength of concrete using artificial neural networks.” Composite Structures, Vol. 92, pp. 2817–2829.
[2] Wu, Y.F., Wei, Y. (2015). “General stress- strain model for steel and FRP confined concrete.”Journal of Composite for Construction, Vol. 19, Issue 4.
[3] Tasnimi, A.A. (2001). “Seismic behavior and design of reinforced concrete buildings.” Building and Housing Research Center, Tehran, (in persian).
[4] Suzuki, M., Akiyama, M., Hong, K.N., Cameron, I., Wang, W.L. (2004). “Stress-strain model of high strength concrete confined by rectangular ties.”13th World Conference on Earthquake Engineering, Vancouver.
[5] Cao, V.V., Ronagh, H.R. (2013). “Amodel for damage analysis of concrete.” Advances in Concrete Construction, Vol. 1, Issue 2, pp. 187-200.
[6] Sadeghi, K.(2014). “Analytical stress-strain model and damage index for confined and unconfined concrete to simulate RC structures under seismic loading.”International Journal of Civil Engineering, Vol. 12, Issue 3, pp. 333–343.
[7] Naderpour, H., Kheyroddin, A., Ahmadi, M. (2014). “Compressive strength of confined concrete in CCFST columns.”Journal of Rehabilitation in Civil Engineering, Vol. 2, Issue 1, pp.106-113.
[8] Campione, G., Cavaleri, L., Ferrotto, M.F., Macaluso, G., Papia, M. (2016). “Efficiency of stress-strain models of confined concrete with and without steel jacketing to reproduce experimental results.” The Open Construction and Building Technology Journal, Vol. 10, pp. 231-248.
[9] Larsen, N., Erduran, E., Kaynia, A.M. (2017). “Evaluation of effect of confinement on the collapse probability of reinforced concrete frames subjected to earthquakes.” Procedia Engineering, Vol. 199, pp. 784-789.
[10] Blume, J.A., Newmark, N.M., Corning, L.H. (1961). “Design of multistory reinforced concrete buildings for earthquake motions.”PortlandCement Association, Chicago.
[11] Soliman, M.T.M., Yu, C.W. (1967). “The flexural stress-strain relationship for concrete confined by rectangular transverse reinforcement.”Mag. Concrete Res., Vol. 19, Issue 61, pp. 223–238.
[12] Kent, D.C., Park, R. (2016). “Flexural members with confined concrete.” J. Struct. Division, Vol. 97, Issue 7, pp. 1969–1990.
[13] Valenas, J., BerteroV.V., Popov, E.P. (1977). “Concrete confined by rectangular hoops and subjected to axial loads.” Report No. UCB/EERC/7713, University of California.
[14] Muguruma, H., Watanabe, S., Katsuta, S., Tanaka, S. (1980). “A stress-strain model of confined concrete.”JCA Cement and Concrete, Tokyo, pp. 429-432.
[15] Scott, B.D., Park, R., Priestley, M.J.N. (1982). “Stress-strain behavior of concrete confined by overlapping hoops at low and high strain rates.” ACI J., Vol. 79, Issue 1, pp. 13–27.
[16] Sheikh, S.A., Uzumeri, S.M. (1982). “Analytical model for concrete confinement in tied columns.” J. Struct. Division, Vol. 108, Issue 12, pp. 2703–2722.
[17] Park, R., Priestley, M.J.N., Gill, W.D. (1982). “Ductility of square-confined concrete columns.” J. Struct. Division, Vol. 108, pp. 929-950.
[18] Fafitis, A., Shah,S.P.(1985). “Predictions of ultimate behavior of confined columns subjected to large deformations.”J. Am. Concret. Inst., Vol. 82, pp. 423-433.
[19] Yong, Y.K., Nour, M.G., Nawy, E.G. (1988). “Behavior of laterally confined high-strength concrete under axial loads.”Journal of Structural Engineering, Vol. 114, pp. 333-351.
 [20] Mander, J.B., Priestley, M.J.N., Park, R. (1988). “Theoretical stress-strain model for confined concrete.” Journal of Structural Engineering, Vol. 114, pp. 1804-1826.
[21] Fujii, M., Kobayashi, K, Miyagawa, T., Inoue, S., Matsumoto, T. (1988). “A study on the application of a stress-strain relation of confined concrete.”JCA Cement and Concrete, Tokyo, pp. 311-314.
[22] Saatcioglu, M., Razavi, S.R. (1992). “Strength and ductility of confined concrete.” Journal of the Structural Division ASCE, Vol. 118, Issue ST6, pp. 1590-1607.
[23] Cusson, D., Paoltre, P. (1995). “Stress–strain model for confined high-strength concrete.” Journal of Structural Engineering, Vol. 121, pp. 468-477.
[24] Hoshikuma, J., Kawashima, K., Nagaya, K., Taylor, A.W. (1997). “Stress-strain model for confined reinforced concrete in bridge piers.”Journal of Structural Engineering, Vol. 123, Issue 5.
[25] Binici, R. (2005). “An analytical model for stress-strain behavior of confined concrete.”Engineering Structures, Vol. 27, Issue 7, pp. 1040-1051.
[26] Bouafia, Y., Idir, A., Kachi, M.S. (2010). “Influence of the taking account of the confined concrete on the structures nonlinear calculation.” ACMA, Morocco.
[27] KhajeSamani, A., Attard, M.M. (2012). “A stress–strain model for uniaxial and confined concrete under compression.” J. Am. Concret. Inst., Vol. 41, pp. 335-349.
[28] Tawfik, A.S., Badr, M.R., Elzanaty, A. (2013). “Behavior and ductility of high strength reinforced concrete frames.”HBRC Journal.
[29] Shayanfar, M.A., Kheyroddin, A., Mirza, M.S. (1997). “Element size effect in nonlinear analysis of reinforced concrete members.”Computer and Structures, Vol. 62, Issue 2, pp. 339-352.