Active Confinement of Reinforced Concrete Bridge Columns Using Shape Memory Alloys
Publication: Journal of Bridge Engineering
Volume 15, Issue 1
Abstract
This paper presents experimental and analytical work conducted to explore the feasibility of using an innovative technique for seismic retrofitting of RC bridge columns using shape memory alloys (SMAs) spirals. The high recovery stress associated with the shape recovery of SMAs is being sought in this study as an easy and reliable method to apply external active confining pressure on RC bridge columns to improve their ductility. Uniaxial compression tests of concrete cylinders confined with SMA spirals show a significant improvement in the concrete strength and ductility even under small confining pressure. The experimental results are used to calibrate the concrete constitutive model used in the analytical study. Analytical models of bridge columns retrofitted with SMA spirals and carbon fiber-reinforced polymer (CFRP) sheets are studied under displacement-controlled cyclic loading and a suite of strong earthquake records. The analytical results proves the superiority of the proposed technique using SMA spirals to CFRP sheets in terms of enhancing the strength and effective stiffness and reducing the concrete damage and residual drifts of retrofitted columns.
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Acknowledgments
The experimental work presented in this paper was made possible by the support provided by the National Cooperative Highway Research Program through its Innovations Deserving Exploratory Analysis project (NCHRP-IDEA) under Contract No. UNSPECIFIEDNCHRP-135.
References
Carey, S. A., and Harries, K. A. (2005). “Axial behavior and modeling of small-, medium- and large-scale circular sections confined with CFRP jackets.” ACI Struct. J., 102(4), 596–604.
Chai, Y. H., Priestley, M. J. N., and Seible, F. (1991). “Seismic retrofit of circular bridge columns for enhanced flexural performance.” ACI Struct. J., 88(5), 572–584.
Cho, C., Kwon, M., and Spacone, E. (2005). “Analytical model of concrete filled fiber reinforced polymer tubes based on multiaxial constitutive laws.” J. Struct. Eng., 131(9), 1426–1433.
Gamble, W. L., Hawkins, N. M., and Kaspar, I. I. (1996) “Seismic retrofitting experience and experiments in Illinois.” Proc., 5th National Workshop on Bridge Research in Progress, National Center for Earthquake Engineering Research (NCEER), State Univ. of New York at Buffalo, Buffalo, N.Y., 245–250.
Haroun, M. A., Hussein, M., and Elsanadedy, M. (2005). “Fiber-reinforced plastic jackets for ductility enhancement of reinforced concrete bridge columns with poor lap-splice detailing.” J. Bridge Eng., 10(6), 749–757.
Hartl, D., Volk, B., Lagoudas, D. C., Calkins, F. T., and Mabe, J. (2006) “Thermomechanical characterization and modeling of Ni60Ti40 SMA for actuated chevrons.” Proc., ASME, Int. Mechanical Engineering Congress and Exposition (IMECE), American Society of Mechanical Engineers, Chicago, 1–10.
Hussain, M. A., and Driver, R. G. (2005). “Experimental investigation of external confinement of reinforced concrete columns by hollow structural section collars.” ACI Struct. J., 102(2), 242–251.
Kawashima, K., Hosotani, M., and Yondea, K. (2001). Carbon fiber sheet retrofit of reinforced concrete bridge piers toward new generation seismic design methodology of bridges, Tokyo Institute of Technology, Tokyo.
Krstulovic-Opara, N., and Thiedeman, P. D. (2000). “Active confinement of concrete members with self-stressing composites.” ACI Mater. J., 97(3), 297–308.
Li, Y. F., and Sung, Y. Y. (2004). “A study on the shear failure of circular sectioned bridge column retrofitted by using CFRP jacketing.” J. Reinf. Plast. Compos., 23(8), 811–830.
Maekawa, K., and An, X. (2000). “Shear failure and ductility of RC columns after yielding of main reinforcement.” Eng. Fract. Mech., 65(2–3), 335–368.
Malvar, L. J., Morrill, K. B., and Crawford, J. E. (2004). “Numerical modeling of concrete confined by fiber-reinforced composites.” J. Compos. Constr., 8(4), 315–322.
Mander, J. B., Priestley, M. J., and Park, R. (1988). “Theoretical stress strain model for confined concrete.” J. Struct. Eng., 114(8), 1804–1826.
Mellor, B. G. (1987). In the science and technology of shape memory alloys, Impresrapit, Barcelona, 334.
Mirmiran, A., and Shahawy, M. (1997). “Behavior of concrete columns confined by fiber composites.” J. Struct. Eng., 123(5), 583–590.
Miyazaki, S., and Otsuka, K. (1986). “Deformation and transformation behavior associated with the -phase in Ti–Ni alloys.” Metall. Trans. A, 17A, 53–63
Nesheli, K. N., and Meguro, K. (2006) “Seismic retrofitting of earthquake-damaged concrete columns by lateral pre-tensioning of FRP belts.” Proc., 8th U.S. National Conf. on Earthquake Engineering, Curran Associates, Inc., San Francisco.
Otsuka, K., and Wayman, C. M. (2002). “Shape memory materials.” Cambridge University Press, Cambridge, U.K.
Priestley, M. J. N., Seible, F., Xiao, Y., and Verma, R. (1994). “Steel jacket retrofitting of reinforced concrete bridge columns for enhanced shear strength. Part 1: Theoretical considerations and test design.” ACI Struct. J., 91(4), 394–405.
Richart, F. A., Brandtzaeg, A., and Brown, R. L. (1928). “A study of the failure of concrete under combined compressive stresses.” Rep. No. 185, Univ. of Illinois Engineering Experiment Station, Urbana, Ill.
Saatcioglu, M., and Yalcin, C. (2003). “External prestressing concrete columns for improved seismic shear resistance.” J. Struct. Eng., 129(8), 1057–1070.
Saiidi, S. M., Sureshkumar, K., and Pulido, C. (2005). “Simple carbon-fiber-reinforced-plastic-confined concrete model for moment-curvature analysis.” J. Compos. Constr., 9(1), 101–104.
Vokoun, D., Kafka, V., and Hu, C. H. (2003). “Recovery stresses generated by NiTi shape memory wires under different constraint conditions.” Smart Material Structures, 12, 680–685.
Yamakawa, T., Banazadeh, M., and Fujikawa, S. (2004) “Emergency retrofit of damaged RC columns right after seismic attack using pre-tensioned aramid fiber belts.” Proc., 1st Conf. on Applications of FRP Composites in Construction and Rehabilitation of Structures, Tehran, Iran.
Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 15 • Issue 1 • January 2010
Pages: 81 - 89
Copyright
© 2010 ASCE.
History
Received: Nov 13, 2008
Accepted: Apr 3, 2009
Published online: Dec 15, 2009
Published in print: Jan 2010
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