| Budget Amount *help |
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2019: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2017: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2016: ¥9,620,000 (Direct Cost: ¥7,400,000、Indirect Cost: ¥2,220,000)
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| Outline of Final Research Achievements |
By conducting this research which aims to propose the rational design and inspection of embankment under seepage condition, the following results were obtained. 1. A water absorption softening test was newly developed. It can rationally determine the mechanical constants for inspection and design of soil structures that collapse due to a decrease in effective stress under seepage conditions. 2. Using the newly developed direct shear box test apparatus that can be performed under seepage conditions, it was shown that there is a high correlation between the shear stress-displacement relationship and the fine contents loss-displacement relationship, and it was elucidated that movement and washout of fine grains are activated due to shear deformation. 3. In order to accurately determine the safety factor of slope failure under seepage conditions, a FEM analysis code that is coupling saturated-unsaturated seepage flow analysis and rigid-plastic finite element analysis has been developed.
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