| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
Various laboratory tests, which are liquefaction strength, local small strain and static penetration tests, were performed using saturated sand specimens through long-term consolidation to detect any change of mechanical properties induced by long-term consolidation.
The number of cycles to liquefaction for long-term consolidation of Toyoura sand increased gradually from 14 days consolidations. The relation between secant shear modulus and shear strain for long-term consolidation of Toyoura sand changed at longer than 14 days consolidation. The change was that threshold of elastic strain region extended. No obvious change in initial elastic shear modulus of Toyoura sand was observed during long-term consolidation. There was a trend that penetration resistance for long-term underwater curing of Toyoura sand increased from 14 days curing.
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