2015 Fiscal Year Final Research Report
Estimation of dynamic properties on irrigation tank by using in-situ vibration test and evaluation of earthquake resistance.
| Project/Area Number |
25450357
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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 |
Rural environmental engineering/Planning
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| Research Institution | Gifu University |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | ため池 / 微動アレイ / 残留強度 / すべり解析 / 卓越振動数 / マサ土 / 逆解析 / S波速度 |
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| Outline of Final Research Achievements |
We investigated the restoration dikes of Awaji Island : we conducted micro tremor observation and elastic exploration techniques. We also gathered specimen from the field and conducted the ring shear tests to obtain the peak and residual strengths. The results are summarized as follows:
1)The predominant frequency of a dike increases as the direction to the right side of the bank ; it is likely caused the difference due to the height of the embankment. In addition, it was more reliable the data obtaied by 3-D direction array measurements than those by elastic wave exploration techniques. It was useful to discover the structure of S wave velocities of the dike by arrangement of the sensors in triangle.
2)We analyzed the dikes which suffered from Hyogoken Nanbu Earthquake by using the data of soil properties and earthquake records, so that we recognized that, in order to decide the settlement of the dike, it was appropriate to apply the strengths of soil, i.e., peak and residual strengths.
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| Free Research Field |
農業土木学
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