Effect of Seismic Load History on Deformation Limit States for Longitudinal Bar Buckling in RC Circular Columns
Publication: Journal of Structural Engineering
Volume 141, Issue 8
Abstract
This paper investigates the impact of seismic load history on longitudinal bar buckling in reinforced concrete (RC) bridge columns. Previous research has shown that reinforcing bars are prone to buckling upon reversal from tensile strain. To quantify this effect, a hybrid analysis method using both fiber and solid elements is developed and implemented to assess the impact of seismic load history on reinforcing bar buckling. Forty earthquake ground motions are utilized to conduct nonlinear time history analysis of bridge columns using a fiber-based model. The longitudinal bar strain history from the fiber-based model is then utilized as the input to the finite element model. A parametric study is conducted for the purpose of developing design equations that provide strain limits prior to the onset of bar buckling. Simple design approaches are proposed based on the design equations.
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Acknowledgments
The research described in this proposal was funded by the Alaska Department of Transportation and Public Facilities (AKDOT&PF) and the Alaska University Transportation Center (AUTC). Special mention for the support and engagement in the research by AKDOT&PF bridge engineer and project technical contact Elmer Marx is noted.
References
Bae, S., Mieses, A. M., and Bayrak, O. (2005). “Inelastic buckling of reinforcing bars.” J. Struct. Eng., 314–321.
Berry, M. P., and Eberhard, M. O. (2005). “Practical performance model for bar buckling.” J Struct. Eng., 1060–1070.
Dhakal, R., and Maekawa, K. (2002). “Reinforcement stability and fracture of cover concrete in reinforced concrete members.” J. Struct. Eng., 1253–1262.
Feng, Y., Kowalsky, M. J., and Nau, J. M. (2014a). “Fiber-based modeling of circular reinforced concrete bridge columns.” J. Earthquake Eng., 18(5), 714–734.
Feng, Y., Kowalsky, M. J., and Nau, J. M. (2014b). “Finite-element method to predict reinforcing bar buckling in RC structures.” J. Struct. Eng., 04014147.
Goodnight, J. C., and Feng, Y. (2012). “Test 17 summary report.”, Alaska Dept. of Transportation and Public Facilities.
Goodnight, J. C., Feng, Y., Kowalsky, M. J., and Nau, J. M. (2013a). “The effect of load history on reinforced concrte bridge column behavior.”, Alaska Dept. of Transportation and Public Facilities.
Goodnight, J. C., Kowalsky, M. J., and Nau, J. M. (2013b). “The effect of load history on performance limit states of circular bridge columns.” J. Bridge Eng., 1383–1396.
Kunnath, S., El-Bahy, A., Taylor, A., and Stone, W. (1997). “Cumulative seismic damage of reinforced concrete bridge piers.”, National Center of Earthquake Engineering Research, Buffalo, NY.
Massone, L. M., and Moroder, D. (2009). “Buckling modeling of reinforcing bars with imperfections.” Eng. Struct., 31(3), 758–767.
Mau, S. T., and El-Mabsout, M. (1989). “Inelastic buckling of reinforcing bars.” J. Eng. Mech., 1–17.
Moyer, M. J., and Kowalsky, M. J. (2003). “Influence of tension strain on buckling of reinforcement in concrete columns.” ACI Struct. J., 3(2), 75–85.
PEER Strong Motion Database. (2000). Univ. of California, 〈http://peer.berkeley.edu/smcat/〉 (Jun. 01, 2009).
Priestley, M. J. N., Calvi, G. M., and Kowalsky, M. J. (2007). Displacement-based seismic design of structures, Institute for Advanced Study (IUSS), Pavia, Italia.
Rodriguez, M., Botero, J., and Villa, J. (1999). “Cyclic stress-strain behavior of reinforcing steel including effect of buckling.” J. Struct. Eng., 605–612.
Urmson, C. R., and Mander, J. B. (2012). “Local buckling analysis of longitudinal reinforcing bar.” J. Struct. Eng., 62–71.
Zong, Z., Kunnath, S., and Monti, G. (2013). “Simulation of reinforcing bar buckling in circular reinforced concrete columns.” ACI Struct. J., 110(4), 601–616.
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Information
Published In
Journal of Structural Engineering
Volume 141 • Issue 8 • August 2015
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Sep 1, 2013
Accepted: Jul 14, 2014
Published online: Sep 3, 2014
Discussion open until: Feb 3, 2015
Published in print: Aug 1, 2015
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