2009 Fiscal Year Final Research Report
Development of efficient construction, maintenance and renewal methods to reduce life cycle cost of buried pipes
| Project/Area Number |
19360210
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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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 | The University of Tokyo |
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Principal Investigator |
KUWANO Reiko The University of Tokyo, 生産技術研究所, 准教授 (80312974)
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| Co-Investigator(Kenkyū-buntansha) |
KOSEKI Junichi 東京大学, 生産技術研究所, 教授 (30272511)
KUWANO Jiro 埼玉大学, 地圏科学研究センター, 教授 (30178149)
KOHASHI Hidetoshi 独立行政法人土木研究所, 技術推進本部, 主席研究員 (90355800)
MATSUMIYA Yosuke 国土技術政策総合研究所, 下水道研究部, 下水道研究室長 (90442904)
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| Project Period (FY) |
2007 – 2009
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| Keywords | 土構造物 / 埋設管 / 維持管理 / 非開削更新 |
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| Research Abstract |
Trenchless renewal method for an old existing pipe, putting inner flexible lining without ground excavation, was mainly investigated. A series of laboratory model tests was conducted to examine effects of backfill soil condition and host pipe deterioration on the behavior of flexible liner of double-layered pipe by trenchless renewal. Mechanism of the formation and expansion of underground cavity due to the soil loss from the broken part of old deteriorated buried pipe was also studied.
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