Case Study of Strategies for Seismic Rehabilitation of Reinforced Concrete Multicolumn Bridge Bents
Publication: Journal of Bridge Engineering
Volume 17, Issue 1
Abstract
The paper presents a case study for comparing the seismic rehabilitation of four reinforced concrete multicolumn bridge bents typical of older bridges not designed for current seismic code criteria. The types of intervention included connecting the piles to the pile caps with high-strength prestressing steel bars, widening of an existing strut beam connecting the pile caps, construction of a new reinforced concrete grade beam overlay to connect the pile caps, and carbon fiber reinforced polymer composite jackets for strengthening the columns and cap-beam-column joints. The paper includes the hysteresis curves from in situ experiments in which a lateral quasi-static cyclic load was applied at the cap-beam and comparisons to analytical pushover curves. A comparison of the capacity of the four bents to the demand of several earthquake records including historical and NEHRP design earthquakes is developed. The cost of seismic rehabilitation of the four bridge bents is presented along with the peak maximum lateral load and maximum displacement achieved in the experiments. The cost of the seismic rehabilitation is related to the performance of each bridge bent. The bridge bent with the lowest level of intervention had the lowest cost and met the displacement and base shear demands for the 10% in 50 years NEHRP design earthquake; the bridge bent with the highest level of intervention had the highest cost and met the displacement and base shear demands for the 2% in 50 years NEHRP design earthquake.
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Acknowledgments
The writers acknowledge the financial support of the Utah Department of Transportation. The writers also acknowledge Sika Corporation for in-kind support. They also acknowledge the contribution of Professor Janos Gergely of the University of North Carolina-Charlotte, and the contribution of Professors Lawrence D. Reaveley and Steven F. Bartlett, and that of several former graduate students at the University of Utah.
References
Abrahamson, N. A. (1992). “Non-stationary spectral matching.” Seismol. Res. Lett., 63(1), 30.
Abrahamson, N. A. (1993). “Non-stationary spectral matching program RSPMATCH user manual.”
American Association of State Highway and Transportation Officials (AASHTO). (2002). Standard specifications for highway bridges, 17th Ed., Washington, DC.
ASCE. (2007). “Seismic rehabilitation of existing buildings.” ASCE 41-06, Reston, VA.
ASTM. (1996). “Standard test method for tensile properties of polymer matrix composite materials.” ASTM D 3039, West Conshohocken, PA.
Bartlett, S. (2004). “Ground response analysis and design spectra for UDOT bridges on soft soil sites.” Draft Utah Dept. of Transportation Rep., Dept. of Civil and Environmental Engineering, Univ. of Utah, Salt Lake City, 208.
Chopra, A. K. (2007). Dynamics of structures, 3rd Ed., Prentice Hall, Upper Saddle River, NJ.
Gergely, J., Pantelides, C. P., and Reaveley, L. D. (2000). “Shear strengthening of RCT-joints using CFRP composites.” J. Compos. Constr., 4(2), 56–64.
Idriss, I. M., and Sun, J. I. (1992). User’s manual for SHAKE91, Center for Geotechnical Modeling, Dept. of Civil and Environmental Engineering, Univ. of California, Davis, CA.
Pantelides, C. P., Alameddine, F., Sardo, T., and Imbsen, R. (2004a). “Seismic retrofit of State Street Bridge on Interstate 80.” J. Bridge Eng., 9(4), 333–342.
Pantelides, C. P., Duffin, J. B., and Reaveley, L. D. (2007). “Seismic strengthening of reinforced concrete multicolumn bridge piers.” Earthquake Spectra, 23(3), 635–664.
Pantelides, C. P., and Gergely, J. (2002). “Carbon-fiber-reinforced polymer seismic retrofit of RC bridge bent: Design and in situ validation.” J. Compos. Constr., 6(1), 52–60.
Pantelides, C. P., Gergely, J., and Reaveley, L. D. (2001). “In-situ verification of rehabilitation and repair of reinforced concrete bridge bents under simulated seismic loads.” Earthquake Spectra, 17(3), 507–530.
Pantelides, C. P., Gergely, J., Reaveley, L. D., and Volnyy, V. A. (1999). “Retrofit of RC bridge pier with CFRP advanced composites.” J. Struct. Eng., 125(10), 1094–1099.
Pantelides, C. P., Ward, J. P., and Reaveley, L. D. (2004b). “Behavior of R/C bridge bent with grade beam retrofit under simulated earthquake loads.” Earthquake Spectra, 20(1), 91–118.
Prakash, V., Powell, G. H., and Campbell, S. (1993). “DRAIN-2DX base program description and user guide: Version 1.10.” Rep. No. UCB/SEMM-93/17, Univ. of California, Berkeley, CA.
Pacific Earthquake Engineering Research Center (PEER). (2010). “Strong ground motion database.” 〈http://peer.berkeley.edu/products/strong_ground_motion_db.html〉.
Seible, F., Priestley, M. J. N., Hegemier, G., and Innamorato, D. (1997). “Seismic retrofitting of RC columns with continuous carbon fiber jackets.” J. Compos. Constr., 1(2), 52–62.
Sexsmith, R., Anderson, D., and English, D. (1997). “Cyclic behavior of concrete bridge bents.” ACI Struct. J., 94(2), 103–113.
Taylor, A. W. (1999). “Performance of reinforced concrete bridges in January 1995 Hyogoken Nanbu (Kobe) earthquake.” ACI Int. SP-187, Seismic Response of Concrete Bridges, SP-187, K. Krishnan, ed., American Concrete Institute, Farmington Hills, MI, 57–67.
USGS. (2002). “United States National Seismic Hazard Maps.” 〈http://earthquake.usgs.gov/hazards/products/conterminous/2002/〉.
Yashinsky, M. (1998). “Performance of bridge seismic retrofits during Northridge earthquake.” J. Bridge Eng., 3(1), 1–14.
Zelinski, R. (1999). “Northridge earthquake influence on bridge design code.” ACI Int. SP-187, Seismic Response of Concrete Bridges, SP 187-2, K. Krishnan, ed., American Concrete Institute, Farmington Hills, MI, 17–28.
Zhang, Y., Cofer, W. F., and McLean, D. I. (1999). “Analytical evaluation of retrofit strategies for multicolumn bridges.” J. Bridge Eng., 4(2), 143–150.
Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 17 • Issue 1 • January 2012
Pages: 139 - 150
Copyright
© 2012 American Society of Civil Engineers.
History
Received: Feb 10, 2010
Accepted: Nov 24, 2010
Published online: Nov 26, 2010
Published in print: Jan 1, 2012
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