2017 Fiscal Year Final Research Report
Experimental and theoretical diagnosis of arch collapse with liquefaction in embankment constructed on soft ground subjected to seismic loading
| Project/Area Number |
15H04037
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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 | Kyoto University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
木村 亮 京都大学, 工学研究科, 教授 (30177927)
澤村 康生 京都大学, 工学研究科, 助教 (20738223)
竹山 智英 神戸大学, 工学研究科, 准教授 (00452011)
竹村 次朗 東京工業大学, 環境・社会理工学院, 准教授 (40179669)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | アーチ効果 / 模型実験 / 液状化 / 盛土 / 主応力軸 |
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| Outline of Final Research Achievements |
In this study, dynamic centrifuge model tests of an embankment placing on rigid base and soft base modelled by urethane were conducted to investigate the liquefaction resistance in association with the change of the stress distribution inside embankments due to basal subsidence. Experimental results reveal that lateral spreading deformation causes reduction in horizontal earth pressure along the bottom of highly-compacted embankments due to concave settlement of the base. Moreover, arch action was formed underneath the core of embankment as reduction in vertical earth pressure was observed due to the basal subsidence and loosening of inner zone after submersion in Metalose supplied inside the embankment. Comparisons between embankments built on the urethane ground and those built on rigid ground imply that basal subsidence decreases liquefaction resistance in embankments during an earthquake.
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| Free Research Field |
地盤工学
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