| Budget Amount *help |
¥17,030,000 (Direct Cost: ¥13,100,000、Indirect Cost: ¥3,930,000)
Fiscal Year 2014: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2013: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
Fiscal Year 2012: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
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| Outline of Final Research Achievements |
The 2011 East Japan Earthquake Disaster caused widely-spread and extensive liquefaction in Tohoku and Kanto districts, which induced severe damage to roads, houses, industrial facilities and lifeline systems such as sewer pipes. In particular, the extent of damage was significantly larger in the reclaimed sandy soil deposits, which were constructed by tranporting a mixture of dredged sands and water using pumps. By focusing on the special soil particle structure of such deposits, a series of laboratory tests was conducted in this study. As a result, liquefaction properties of specimens having the special soil particle structure could be revealed, which were compared to those having a uniform structure. Effectiveness of the procedures for improving the liquefaction properties was also confirmed. In addition, several new or modified experimental procedures were also established for conducting such test series.
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