Development of pipe-in-pipe filled with frozen material for practical use
| Project/Area Number |
25420473
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Structural engineering/Earthquake engineering/Maintenance management engineering
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| Research Institution | Hokkaido University |
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Principal Investigator |
Kanie Shunji 北海道大学, 工学(系)研究科(研究院), 教授 (10332470)
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| Co-Investigator(Kenkyū-buntansha) |
SATO Motohiro 北海道大学, 大学院工学研究院, 准教授 (00344482)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | 構造工学 / パイプインパイプ / 人工凍結 / 中詰材料 / 高靱性 / 複合構造 / 弾塑性挙動評価 / 凍結・融解 / ファイバーモデル / 凍結砂 / 製造管理 / Winklerバネ / 地盤反力係数 |
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| Outline of Final Research Achievements |
Pipe-in-pipe filled with frozen material can bend smoothly to a large curvature without failure. The authors improved a bending apparatus for experiment to make it follow the bending behavior from elastic to plastic ranges consistently. The measuring method was also improved to observe the large bending curvature by a digital image processing with a high resolution camera. As a result, it was confirmed that the performance of pipe-in-pipe filled with frozen material was drastically improved. The authors proposed numerical models which can evaluate the bending behavior of the pipe-in-pipes, and it becomes possible to explain the effect of filling material on the increase in ductility. The authors are convinced of that the application of pipe-in-pipe to a practical use was enhanced.
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Report
(4 results)
Research Products
(8 results)
