Influence of Pier Stiffness Degradation on Soil-Structure Interaction in Base-Isolated Bridges
Publication: Journal of Bridge Engineering
Volume 9, Issue 3
Abstract
Identification of system parameters by recorded accelerographs on base-isolated bridges during earthquakes provides an opportunity to investigate the performance of such bridges. Stiffness degradation in reinforced concrete piers of four multispan continuous base-isolated bridges in Japan during eighteen earthquakes is examined by using system identification results and theoretical load-displacement curves of reinforced concrete piers. Soil-structure interaction (SSI) effect identified in these bridges is found to be independent of free field acceleration and weakly dependent on dynamic soil properties. This apparent contradiction with the popular belief of strong SSI in weaker soil prompted to consider the fact that with increasing seismic intensity, similar degradation in pier stiffness also takes place and it is the ratio of pier and foundation stiffness which should be examined to determine the influence of SSI. A relatively strong relationship between these variables supports the hypothesis that SSI is more strongly related to the stiffness ratio of pier and foundation than dynamic soil properties.
Get full access to this article
View all available purchase options and get full access to this article.
References
Bentz, E. (2000). “RESPONSE-2000—Load-deformation response of reinforced concrete sections.” PhD dissertation, Dept. of Civil Engineering, Univ. of Toronto, Canada.
Chaudhary, M. T. A. (1999). “Evaluation of seismic performance of base-isolated bridges based on earthquake records.” PhD dissertation, Dept. of Civil Engineering, Univ. of Tokyo, Japan.
Chaudhary, M. T. A., Abe, M., and Fujino, Y.(2001). “Performance evaluation of base-isolated Yama-age bridge with high damping rubber bearings using recorded seismic data.” Eng. Struct., 23(8), 902–910.
Chaudhary, M. T. A., Abe, M., and Fujino, Y.(2002). “Role of structural details in altering the expected seismic response of base-isolated bridges.” Mech. Syst. Signal Process., 16(2–3), 413–428.
Chaudhary, M. T. A., Abe, M., Fujino, Y., and Yoshida, J.(2000). “System identification of two base-isolated bridges using seismic records.” J. Struct. Eng., 126(10), 1187–1195.
Ciampoli, M., and Pinto, P. E.(1995). “Effects of soil-structure interaction on inelastic seismic response of bridge piers.” J. Struct. Eng., 121(5), 806–814.
Dobry, R., and Gazetas, G.(1998). “Simple method for dynamic stiffness and damping of floating pile groups.” Geotechnique 38(4), 557–574.
Gazetas, G. (1991). “Foundation vibrations.” Foundation engineering handbook, Y. Fang, ed., Van Nostrand Reinhold Co., New York.
Giuseppe, D. C., Mauro, D., and Domenico, L. (2000). “Influence of soil-structure interaction on the seismic response of bridge piers.” Proc., 12th World Conf. on Earthquake Engineering, New Zealand National Society for Earthquake Engineering, Auckland, New Zealand. Paper No. 438.
Idriss, I. M., and Sun, J. I. (1992). “SHAKE91: A computer program for conducting equivalent linear seismic response analyses of horizontally layered soil deposits.” User’s guide, Univ. of California, Davis, Calif., 1–13.
Japan Road Association (1998). “Design specifications for highway bridges. Part V: Seismic design.” Tokyo.
Konagai, K. (1998). “Guide to TLEM.” Program manual No. 5, Konagai Lab, Institute of Industrial Science, Univ. of Tokyo, Japan.
Lee, G. C., Kitane, Y., and Buckle, I. G. (2001). “Literature review of the observed performance of seismically isolated bridges.” Research Progress Accomplishments 2000-2001, Multidisciplinary Center for Earthquake Engineering Research, Buffalo, New York, 51–62.
Levine, M. B., and Scott, R. F.(1989). “Dynamic response verification of simplified bridge-foundation model.” J. Geotech. Eng., 115(2), 246–260.
Prakash, S., Kumar, S., and Sreeram, K. (1996). “Pile-soil-pile interaction effects under earthquake loadings.” Proc., 11th World Conf. on Earthquake Engineering, Acapulco, Mexico, Sociedad Mexicana de Ingenieria Sismica (Mexican Society for Earthquake Engineering), Elsevier Science, New York, Paper No. 359.
Priestley, M. J., Calvi, G. M., and Seible, S. (1996). Seismic design and retrofit of bridges, Wiley, New York.
Saadeghvaziri, M. A., Yazdani-Motlagh, A. R., and Rashidi, S.(2000). “Effects of soil-structure interaction on longitudinal seismic response of MSSS bridges.” Soil Dyn. Earthquake Eng., 20(1–4), 231–242.
Spyrakos, C. C.(1990). “Assessment of SSI on the longitudinal seismic response of short span bridges.” Eng. Struct., 12(1), 60–66.
Vlassis, A. G., and Spyrakos, C.(2001). “Seismically isolated bridge piers on shallow stratum with soil-structure interaction.” Comput. Struct., 79(32), 2847–2861.
Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 9 • Issue 3 • May 2004
Pages: 287 - 296
Copyright
Copyright © 2004 American Society of Civil Engineers.
History
Received: May 1, 2002
Accepted: Mar 3, 2003
Published online: Apr 15, 2004
Published in print: May 2004
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.