Capacity Assessment of V-Shaped RC Bridge Bents
Publication: Journal of Bridge Engineering
Volume 19, Issue 2
Abstract
Assessment of the flexural and shear capacity of two V-shaped RC bridge bents has been validated against experimental results from tests on 1:3-scale specimens. A numerical procedure based on iterative analyses taking into account the variation of vertical loads in the bents’ columns provides a satisfactory prediction of the bents’ overall performance. Based on its general agreement with the experimental data, the numerical model was also used to investigate the uneven distribution of axial load and shear force between the two columns of each bent. Three models were compared for the assessment of the shear capacity of the specimens. All the models identified the compression column as the most critical in terms of shear capacity, as confirmed by the experimental results. The University of California at San Diego (UCSD) model, which introduces an additional contribution due to the compression strut along the column length, appears to be less sensitive to axial load variations and to provide a reliable assessment of the shear capacity of the bents.
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Acknowledgments
Funding for this research was provided by CALTRANS under Research Grant No. 59A0651. The authors gratefully acknowledge Dr. Charles Sikorsky and the Division of Engineering Services for the valuable contribution.
References
ASTM. (2005). “Standard test methods and definitions for mechanical testing of steel products.” A370-05, West Conshohocken, PA.
Bentz, E. C., and Collins, M. P. (2000). Response 2000 – Reinforced concrete sectional analysis using the modified compression field theory, Univ. of Toronto, Toronto.
Benzoni, G., Othaki, T., Priestley, M. J., and Seible, F. (1996). “Seismic performance of circular reinforced concrete columns under varying axial load,” Rep. No. SSRP-96/04, Structural Systems Research Project, Univ. of California at San Diego (UCSD), San Diego.
Benzoni, G., Philippi, D., Lomiento, G., and Bonessio, N. (2011), “Numerical experimental performance of Dumbarton Bridge piers,” Rep. No. SSRP. 11-06, Dept. of Structural Engineering, Univ. of California at San Diego (UCSD), San Diego.
CALTRANS. (2004). Bridge design specifications, California DOT, Sacramento, CA.
CALTRANS. (2010). Seismic design criteria, version 1.6, California DOT, Sacramento, CA.
Dowell, R. K., Seible, F., and Wilson, E. L. (1998). “Pivot hysteresis model for reinforced concrete members.” ACI Struct. J., 95(5), 607–617.
Ghobarah, A., and Ali, H. M. (1988). “Seismic performance of highway bridges.” Eng. Struct., 10(3), 157–166.
Horii, R. (1998). “Coyote Hills Regional Park.” 〈http://rhorii.com/BABP/Cytehils.htm〉 (Sep. 12, 2012).
Horii, R. (2010). “Ravenswood.” 〈http://www.rhorii.com/Ravenswood/Ravenswood.html〉 (Aug. 27, 2013).
Jaradat, O., Marsh, M., and McLean, D. (1998). “Performance of existing bridge columns under cyclic loading—part I: Experimental results and observed behavior.” ACI Struct. J., 95(6), 695–704.
Kim, T.-H., Lee, K.-M., Yoon, C., and Shin, H. M. (2003). “Inelastic behavior and ductility capacity of reinforced concrete bridge piers under earthquake. II: Numerical validation.” J. Struct. Eng., 1208–1219.
Kowalsky, M. J., and Priestley, M. N. (2000). “Improved analytical model for shear strength of circular reinforced concrete columns in seismic regions.” ACI Struct. J., 97(3), 388–396.
Kowalsky, M. J., Priestley, M. J. N., and Seible, F. (1995). “Shear behavior of lightweight concrete columns under seismic conditions,” Rep. No. SSRP-95/10, Structural Systems Research Project, Univ. of California at San Diego (UCSD), San Diego.
Mander, J. B., Priestley, M. J. N., and Park, R. (1988). “Theoretical stress-strain model for confined concrete.” J. Struct. Eng., 1804–1825.
Memari, A. M., Harris, H. G., Hamid, A. A., and Scanlon, A. (2005). “Ductility evaluation for typical existing R/C bridge columns in the eastern U. S. A.” Eng. Struct., 27(2), 203–212.
Mo, Y. L., Wong, D. C., and Maekawa, K. (2003). “Seismic performance of hollow bridge columns.” ACI Struct. J., 100(3), 337–348.
Priestley, M. J. N., and Benzoni, G. (1996). “Seismic performance of circular columns with low longitudinal reinforcement ratios.” ACI Struct. J., 93(4), 474–485.
Priestley, M. J. N., and Park, R. (1987). “Strength and ductility of concrete bridge columns under seismic loads.” ACI Struct. J., 84(1), 61–76.
Priestley, M. J. N., Seible, F., and Calvi, G. M. (1996). Seismic design and retrofit of bridges, Wiley, Hoboken, NJ.
Priestley, M. J. N., Verma, R., and Yan, X. (1994). “Seismic shear strength of reinforced concrete columns.” J. Struct. Eng., 2310–2329.
Pulido, C., Saiidi, M. S., Sanders, D., Itani, A., and El-Azazy, S. (2004). “Seismic performance of two-column bents – Part I: Retrofit with carbon fiber-reinforced polymer fabrics.” ACI Struct. J., 101(4), 558–568.
Ranzo, G., and Priestley, M. J. N. (2000). “Seismic performance of large RC circular hollow columns.” Proc., 12th World Conf. on Earthquake Engineering (CD-ROM), New Zealand Society for Earthquake Engineering, Auckland, New Zealand, Ref. 0250.
SAP2000 V.12.1 [Computer software]. Computers and Structures, Inc., Berkeley, CA.
Sritharan, S., Priestley, M. J. N., and Seible, F. (2001). “Seismic design and experimental verification of concrete multiple column bridge bents.” ACI Struct. J., 98(3), 335–346.
Takahashi, Y., and Iemura, H. (2000). “Inelastic seismic performance of RC tall piers with hollow section.” Proc., 12th World Conf. on Earthquake Engineering (CD-ROM), New Zealand Society for Earthquake Engineering, Auckland, New Zealand, Ref. 1353.
Tirasit, P., and Kawashima, K. (2007). “Seismic performance of square reinforced concrete columns under combined cyclic flexural and torsional loadings.” J. Earthquake Eng., 11(3), 425–452.
Wehbe, N., Saiidi, M. S., and Sanders, D. H. (1999). “Seismic performance of rectangular bridge columns with moderate confinement.” ACI Struct. J., 96(2), 248–258.
Yeh, Y. K., Mo, Y. L., and Yang, C. Y. (2001). “Seismic performance of hollow circular bridge piers.” ACI Struct. J., 98(6), 862–871.
Yeh, Y. K., Mo, Y. L., and Yang, C. Y. (2002). “Full-scale tests on rectangular hollow bridge piers.” Mater. Struct., 35(2), 117–125.
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© 2014 American Society of Civil Engineers.
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Received: Dec 3, 2012
Accepted: May 17, 2013
Published online: May 20, 2013
Published in print: Feb 1, 2014
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