Damage Analysis of Hanshin Expressway Viaducts during 1995 Kobe Earthquake. III: Three-Span Continuous Girder Bridges
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VIEW THE REPLYPublication: Journal of Bridge Engineering
Volume 10, Issue 1
Abstract
Almost all the single reinforced concrete (RC) piers from P35 to P350 received consistently severe damage, considering the large residual inclination of piers included in earthquake-induced severe damage. However, some of the piers in the section from P35 to P350 remained lightly damaged, and this phenomenon is observed especially in many piers under fixed bearings in continuous girder bridges. In this study, using experimentally based models for metal bearings and installing them to an existing FEM code, a nonlinear dynamic response analysis of a continuous girder bridge system is conducted. It is shown that the results depend on the ground motion, but the fuse effect of the breaking of the bearings could have been a reason for the phenomenon.
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Acknowledgments
The writers express their sincere thanks to Hanshin Public Expressway Corporation for providing us useful data and information. Special thanks are given to Messrs. H. Hayashi, M. Kitazawa, and K. Kosa (Hanshin Expressway Corp.). Professors H. Okamura and K. Maekawa (University of Tokyo) made valuable comments during the study. This research is partially supported by a grant-in-aid from the Ministry of Education, Science, Culture and Sports, Japan.
References
Abe, M., Yanagino, K., Fujino, Y., and Hashimoto, S. (2001). “Damage analysis of three span continuous girder bridges in 1995 Hyogoken-Nanbu earthquake.” Journal of Structural Mechanics and Earthquake Engineering, Japan Society of Civil Engineers, I-54(668), 83–101 (in Japanese).
Fujino, Y., Hashimoto, S., and Abe, M. (2005). “Damage analysis of Hanshin Expressway viaducts during 1995 Kobe earthquake. I: Residual inclination of reinforced concrete piers.” J. Bridge Eng., 10(1), 45–53.
Hashimoto, S., Fujino, Y., and Abe, M. (2005). “Damage analysis of Hanshin Expressway viaducts during 1995 Kobe earthquake. II: Damage mode of single reinforced concrete piers.” J. Bridge Eng., 10(1), 54–60.
Hauke, B., and Maekawa, K. (1999). “Three-dimensional modeling of reinforced concrete with multi-directional cracking.” Journal of Materials, Concrete Structures and Pavements, Japan Society of Civil Engineers, V-45(634), 349–368.
Highway Bridge Association of Japan. (1991). Handbook for bearings of highway bridges, Maruzen (in Japanese).
Okamura, H., and Maekawa, K. (1991). Nonlinear analysis and constitutive models of reinforced concrete, Gihodo (in Japanese).
Usami, S., Abe, M., Fujino, Y., and Yanagino, K. (1999). “Experimental research on the performance of metal bearings.” Proc., Symp. on Earthquake Engineering, 909–912 (in Japanese).
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Published In
Journal of Bridge Engineering
Volume 10 • Issue 1 • January 2005
Pages: 61 - 68
Copyright
© 2004 ASCE.
History
Received: Aug 16, 2002
Accepted: May 5, 2003
Published online: Jan 1, 2005
Published in print: Jan 2005
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