Damage Analysis of Hanshin Expressway Viaducts during 1995 Kobe Earthquake. II: Damage Mode of Single Reinforced Concrete Piers
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VIEW THE REPLYPublication: Journal of Bridge Engineering
Volume 10, Issue 1
Abstract
The damage mode that single reinforced concrete (RC) piers of the Hanshin Expressway Kobe Route suffered during the 1995 Kobe earthquake is discussed. On the Kobe Route, many single RC piers suffered from flexural mode damage; however, some suffered from shear failure, and most shear failure occurred in piers with rectangular cross sections. The flexural and shear capacity of each pier are calculated based on the design documents, and the ratio of flexure to shear capacity, , is calculated by taking into account the mass of the pier column. It is found that the damage mode (flexure or shear) in the severely damaged single RC piers from P1 to P350 can be explained by the value of , either >1.0 (flexural mode) or <1.0 (shear mode).
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Acknowledgments
The writers express their sincere thanks to the Hanshin Public Expressway Corporation for providing us with useful data and information. Special thanks are given to Messrs. H. Hayashi, M. Kitazawa, and K. Kosa (Hanshin Expressway Corp.). Profs. 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
Fujino, Y.,Hashimoto, S., and Abe, M. (2005). “Damage analysis of Hanshin expressway during 1995 Kobe earthquake. I: Residual inclination of RC piers.” J. Bridge Eng., 10(1), 45–53.
Hashimoto, S., Fujino, Y., and Abe, M. (2005). “Damage analysis of Hanshin expressway during 1995 Kobe earthquake. III: Three-span continuous girder bridges.” J. Bridge Eng., 10(1), 61–68.
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Kosa, K., et al. (1998). “Evaluation of earthquake-damaged RC Piers by the ultimate bearing capacity procedures.” J. Mater. Concrete Struct. Pavements, JSCE, 39(592), 73–82 (in Japanese).
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Published In
Journal of Bridge Engineering
Volume 10 • Issue 1 • January 2005
Pages: 54 - 60
Copyright
© 2005 ASCE.
History
Received: Aug 16, 2002
Accepted: May 5, 2003
Published online: Jan 1, 2005
Published in print: Jan 2005
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