Shake Table Tests of Tall-Pier Bridges to Evaluate Seismic Performance
Publication: Journal of Bridge Engineering
Volume 23, Issue 9
Abstract
More than 40% of the bridges in mountainous areas of Southwest China are constructed with piers having a height of over 40 m. Such piers are characterized by large structural flexibility and distributed mass. To investigate the effects of higher modes on the seismic performance of this class of bridges, shake table tests on two 1/7-scale, tall-pier models were conducted at Tongji University, Shanghai. This paper describes the design, instrumentation, and loading protocols for the tests and discusses and compares the results. Due to the higher-mode effects, the curvature at the pier base and displacement at the pier top of were found to be weakly correlated, indicating that displacement is not a reliable damage measure for tall piers. Moreover, results indicated that the contribution of higher modes can lead to the formation of an additional plastic region at midheight in the piers. However, current seismic design code guidelines are for short to medium-height piers, where the midheight region of piers is assumed to respond elastically; code guidelines are not provided for tall piers. This paper explores the effect of higher modes on the seismic performance of bridges with tall piers and suggests two methods to improve the seismic performance: (1) eliminating the midheight plastic response by including more longitudinal steel, and (2) using more confinement in the midheight region to improve pier ductility and prevent shear failure.
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Acknowledgments
The authors gratefully acknowledge the support by the Self-innovation Project of the State Key Laboratory for Disaster Reduction in Civil Engineering of Tongji University (SLDRCE15-A-01), and the National Natural Science Foundation of China (51678434). Also, the first author acknowledges the support of the China Scholarship Council.
References
AASHTO. 2007. Guide specifications for LRFD seismic bridge design. Washington, DC.
Begg, R. D., A. C. Mackenzie, C. J. Dodds, and O. Loland. 1976. “Structural integrity monitoring using digital processing of vibration signals.” Proc., 8th Annual Offshore Technology Conf., Offshore Technology Conference, 1976, Dallas, TX, 305–311.
Berry, M., M. Parrish, and M. Eberhard. 2004. PEER structural performance database user’s manual (version 1.0). Berkeley, CA, Univ. of California.
CEN (European Committee for Standardization). 1998. Design of structure for earthquake resistence—Bridges. “EUROCODE 1998-2. Brussels, Belgium.
Ceravolo, R., G. V. Demarie, L. Giordano, G. Mancini, and D. Sabia. 2009. “Problems in applying code-specified capacity design procedures to seismic design of tall piers.” Eng. Struct. 31 (8): 1811–1821. https://doi.org/10.1016/j.engstruct.2009.02.042.
Chen, X., J. Li, and Z. Guan. 2016. “Effects of higher modes on tall piers.” IABSE Conf. IABSE Symposium Report (Vol. 106, No. 12, pp. 136–143). International Association for Bridge and Structural Engineering.
Chopra, A. K. 1995. Dynamics of structures: Theory and applications to earthquake engineering. Englewood Cliffs, NJ: Prentice Hall.
Chopra, A. K., and R. K. Goel. 2002. “A modal pushover analysis procedure for estimating seismic demands for buildings.” Earthquake Eng. Struct. Dyn. 31 (3): 561–582. https://doi.org/10.1002/eqe.144.
Fox, C. H. J. 1992. “The location of defects in structures: a comparison of the use of natural frequency and mode shape data.” Proc., 10th Int. Modal Analysis Conf., (Publisher) Society for Experimental Mechanics, 637–642.
Guan, Z., J. Li, Y. Xu, and H. Lu. 2011. “Higher-order mode effects on the seismic performance of tall piers.” Front. Arhit. Civ. Eng. China. 5 (4): 496–502.https://doi.org/10.1007/s11709-011-0131-9.
Johnson, N., R. T. Ranf, M. S. Saiidi, D. Sanders, and M. Eberhard. 2008. “Seismic testing of a two-span reinforced concrete bridge.” J. Bridge Eng. 13 (2): 173–182. https://doi.org/10.1061/(ASCE)1084-0702(2008)13:2(173).
Krausmann, E., A. M. Cruz, and B. Affeltranger. 2010. “The impact of the 12 May 2008 Wenchuan earthquake on industrial facilities.” J. Loss Prev. Process Ind. 23 (2): 242–248. https://doi.org/10.1016/j.jlp.2009.10.004.
Li, J., H. Tang, and Z. Guan. 2017. “Shake table test and numerical analysis of a bridge model supported on elastomeric pad bearings.” J. Earthquake Eng. 21 (4): 604–634.https://doi.org/10.1080/13632469.2016.1174751.
Ministry of Transport of the People’s Republic of China. 2008. Guidelines for seismic design of highway bridges. JTG/T B02-01-2008. Beijing, China Communication Press.
Moncarz, P. D., and H. Krawinkler. 1981. Theory and application of experimental model analysis in earthquake engineering. Standford, CA, Dept. of Civil Engineering and Environmental Engineering, Stanford Univ.
Nathan, J. 2006. “Large-scale experimental and analytical seismic studies of a two-span reinforced concrete bridge system.” Doctoral Dissertation, Reno, NV, Univ. of Nevada.
Priestley, M. J. N. 1996. Seismic design and retrofit of bridges. New York: John Wiley & Sons.
Saiidi, M. S., A. Vosooghi, H. Choi, and P. Somerville. 2014. “Shake table studies and analysis of a two-span RC bridge model subjected to a fault rupture.” J. Bridge Eng. 19 (8): A4014003. https://doi.org/10.1061/(ASCE)BE.1943-5592.0000478.
Scott, B. D., R. Park, and M. J. N. Priestley. 1982. “Stress-strain behavior of concrete confined by overlapping hoops at low and high strain rates.” J. Proc. 79 (1): 13–27. https://doi.org/10.14359/10875.
Srinivasan, M. G., and C. A. Kot. 1992. “Effects of damage on the modal parameters of a cylindrical shell.” Proc., 10th Int. Modal Analysis Conf. 529–535.
Takewaki, I., S. Murakami, K. Fujita, S. Yoshitomi, and M. Tsuji. 2011. “The 2011 off the Pacific Coast of Tohoku earthquake and response of high-rise buildings under long-period ground motions.” Soil Dyn. Earthquake Eng. 31 (11): 1511–1528. https://doi.org/10.1016/j.soildyn.2011.06.001.
Tubaldi, E., L. Tassotti, A. Dall'Asta, and L. Dezi. 2014. “Seismic response analysis of slender bridge piers.” Earthquake Eng. Struct. Dyn. 43 (10): 1503–1519. https://doi.org/10.1002/eqe.2408.
Yegian, M., G. Ghahraman, G. Gazetas, P. Dakoulas, and N. Makris. 1995. “The Northridge Earthquake of 1994: Ground motions and geotechnical aspects.” Int. Conf. on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. Rolla, MO: Missouri University of Science and Technology.
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© 2018 American Society of Civil Engineers.
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Received: May 11, 2017
Accepted: Feb 16, 2018
Published online: Jun 19, 2018
Published in print: Sep 1, 2018
Discussion open until: Nov 19, 2018
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