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Damage Analysis of Hanshin Expressway Viaducts during 1995 Kobe Earthquake. II: Damage Mode of Single Reinforced Concrete Piers |
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| Authors: | Satoko Hashimoto Yozo Fujino Masato Abe |
| Affiliation: | 1Former Research Fellow, Japan Society for the Promotion of Science for Young Scientists, Dept. of Civil Engineering, Univ. of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan. 2Professor, Dept. of Civil Engineering, Univ. of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan. E-mail: Fujino@civil.t.u-tokyo.ac.jp 3Chief Researcher, BMG Corp., Nakase, Mihama-ku, Chiba 261-7125, Japan. E-mail: masato@hashimori.jp |
| 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, r, 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 r, either >1.0 (flexural mode) or <1.0 (shear mode). |
| Keywords: | Earthquake damage Japan Concrete reinforced Shear strength Flexural strength Bridges highway Bridges viaducts Bridges piers |