2013 Fiscal Year Final Research Report
Post-mortem analysis of the embankment failure at Makinohara of Tomei Expressway induced by Surugawan Earthquake (Aug. 2009)
| Project/Area Number |
23560594
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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 |
Geotechnical engineering
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| Research Institution | Chuo University |
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Principal Investigator |
OHTA Hideki 中央大学, 研究開発機構, 機構教授 (80026187)
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| Co-Investigator(Kenkyū-buntansha) |
齋藤 邦夫 中央大学, 理工学部, 教授 (00092552)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 土質力学 / 斜面崩壊 / 締固め / 盛土 |
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| Research Abstract |
Comparing the laboratory test data with the in-situ dry density and moisture content, it was concluded that constant volume shear strength of the fill which did not fail during the Surugawan earthquake (Aug. 2009) was about 1,200kPa while the strength of the fill which failed during the earthquake was estimated to be about 120kPa based on the back-calculation. The possible mechanism of this reduction of the shear strength of the fill material, at Makigahara, Tomei Expressway, caused by a long-term infiltration of the water was quantitatively clarified by the overall observation at the site together with a series of laboratory tests on the fill material.
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[Presentation] Estimation of rockfill dam behavior during imponding by elasto-plastic model2011
Author(s)
Tomida, N., Sato, N., Soda, H., Jikan, S., Ohmori, K. and Ohta, H
Organizer
Dams and Reservoirs under Changing Challenges
Place of Presentation
Lucern
Year and Date
20110601-06
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