| Project/Area Number |
20560466
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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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 | Meijo University |
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Principal Investigator |
ITABASHI Kazuo Meijo University, 法人・常勤理事 (30109269)
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| Co-Investigator(Kenkyū-buntansha) |
KODAKA Takeshi 名城大学, 理工学部, 教授 (00252271)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2010: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2009: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2008: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | 河川堤防 / 砂礫 / 粒度調整 / 三軸試験 / 強度定数 / 浸透破壊 / 詳細検討 / 安全率 / 大型三軸試験 / 供試体寸法 / 供試体密度 / 排水条件 / 礫 / せん断 / 不飽和土 |
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| Research Abstract |
In order to study effects of the specimen size, the dry density of specimen, the drainage conditions and the grading method on the shear characteristics of sandy gravels in river embankments, various series of large and small size triaxial tests were performed using the original grain sandy gravels and the graded grain soils, respectively. From the results of the tests, in the case of the high dry density of specimen, the internal friction angle obtained by CD tests is similar to that by CU test. However, in the case of low dry density of specimens, there is big difference of internal friction angle. From the comparison of the results between the large and small size triaxial tests using the same dry density specimens, the shear behavior of graded grain sandy gravel observed by the small size triaxial test has shown the dense tendency. In order to evaluate the shear properties of the original grain soil using by the conventional small size triaxial test, the effective mechanical stabilization method is proposed, which is replacing large grain gravels with small grain gravels.
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