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Seismic damage assessment of mountain tunnel: A case study on the Tawarayama tunnel due to the 2016 Kumamoto Earthquake


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タイトル: Seismic damage assessment of mountain tunnel: A case study on the Tawarayama tunnel due to the 2016 Kumamoto Earthquake
著者: Zhang, Xuepeng / Jiang, Yujing / Sugimoto, Satoshi
発行日: 2018年 1月
出版者: Elsevier Ltd.
引用: Tunnelling and Underground Space Technology, 71, pp.138-148; 2018
抄録: The Kumamoto Earthquake with magnitude of 7.3(Mj) on April 16 and 6.5(Mj) on April 14, 2016 have triggered numerous damages to the Tawarayama Tunnel in Kumamoto Prefecture, Japan. Distribution and characteristics of these seismic damages were investigated and summarized to assess potential influencing factors. Seismic damages are categorized into five patterns as follows: lining cracks, spalling and collapse of concrete lining, construction joint damage, pavement damage and groundwater leakage. Lining cracks can be further classified into ring crack, longitudinal crack, transverse crack and inclined crack. Site investigation showed the primary seismic damage was lining crack, especially ring crack. In special, an interesting phenomenon was observed that ring cracks occurred with an estimated average spacing of 10.0 m in 23.4% spans of the Tawarayama Tunnel. This results from the interaction between seismic wave and special geological conditions that dense Andesite and crushed Andesite around the Tawarayama Tunnel appear in tilt alternately with space between 10 m and 20 m. Following these analysis, some recommendations were proposed for future tunnel planning.
キーワード: 2016 Kumamoto Earthquake / Tawarayama tunnel / Seismic damage / Influencing factor
URI: http://hdl.handle.net/10069/37819
ISSN: 08867798
DOI: 10.1016/j.tust.2017.07.019
権利: © 2017 Elsevier Ltd. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
資料タイプ: Journal Article
原稿種類: author
出現コレクション:060 学術雑誌論文

引用URI : http://hdl.handle.net/10069/37819

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