2015 Fiscal Year Final Research Report
On the impact of deterioration of soils due to seepage-induced internal erosion on seismic performance of existing embankment
| Project/Area Number |
25420498
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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 | Tokyo Institute of Technology |
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Principal Investigator |
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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)
Takeyama Tomohide 神戸大学, 大学院工学研究科, 准教授 (00452011)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | 内部浸食 / 盛土 / 耐震 |
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| Outline of Final Research Achievements |
Internal erosion has a certain impact on seismic performance of existing embankment. To evaluate conditions of the embankment before earthquake, deterioration process of soil/geotechnical structure due to seepage flow is needed to be understood. In this research, suffusion is focused on among the various modes of the internal erosion. Physical model tests and numerical simulations are conducted to examine the seepage-induced suffusion process in the embankment. Optical quantification of suffusion in plane strain physical model is successfully made using digital microscope. A plane strain erosion apparatus equipped with microscope observation is developed, which allows detailed observation of the deterioration process and investigation of the mechanical consequences of soils subjected to internal erosion.
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| Free Research Field |
地盤工学
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