2010 Fiscal Year Final Research Report
Fundamental study on seismic stability of tunnels in weakly cemented soil and its countermeasures
| Project/Area Number |
20246079
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Geotechnical engineering
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
KUSAKABE Osamu Tokyo Institute of Technology, 大学院・理工学研究科, 教授 (40092548)
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| Co-Investigator(Kenkyū-buntansha) |
TAKEMURA Jiro 東京工業大学, 大学院・理工学研究科, 准教授 (40179669)
TAKAHASHI Akihiro 東京工業大学, 大学院・理工学研究科, 准教授 (40293047)
IZAWA Jun 東京工業大学, 大学院・理工学研究科, 助教 (70345388)
TAKEYAMA Tomohide 東京工業大学, 大学院・理工学研究科, 助教 (00452011)
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| Co-Investigator(Renkei-kenkyūsha) |
YASHIRO Kazuhide 鉄道総合技術研究所, 構造物技術研究部, 主任研究員 (70425932)
YOSGISAKO Kazuo 鹿島建設(株), 研究技術開発本部技術研究所, 主任研究員 (80416742)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 地震 / NATM / 埋設管 / 地盤変形 / 断層 / 堆積層 / 遠心模型 / 重力場模型 |
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| Research Abstract |
Tunnels in weakly cemented or no-cemented soils are susceptible to damages by ground motions or displacements caused by earthquake. In order to investigate complicated seismic soil-structure interaction of such tunnels, various model testing techniques has been developed, such as an active type shear box and a fault simulators. Three specific conditions were considered in this study, namely, 1) shallow tunnels which are subjected to shear deformation of grounds, 2) Tunnels in weak ground which is subjected to large earth pressure, and 3) tunnels in an alluvium subjected to fault displacement. From the model test results and numerical simulation, typical deformation and failure mechanism of these tunnels are scrutinized and effective countermeasures against them are discussed.
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Research Products
(13 results)
