| Budget Amount *help |
¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
Fiscal Year 2020: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2019: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2018: ¥10,140,000 (Direct Cost: ¥7,800,000、Indirect Cost: ¥2,340,000)
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| Outline of Final Research Achievements |
Experimental investigations were conducted to study the increase of the liquefaction resistance of sandy soil deposits that undergo gradual densification due to many earthquake histories as well as to reveal its effect on the seismic performance of superstructures resting on such dense sandy soil deposits.
As a result, the liquefaction properties of dense sands were found not simply to depend on their overall relative density. The structural performance was largely affected by the past shaking histories under otherwise similar conditions of the dense subsoils, including their overall relative density. It was also demonstrated that the liquefaction resistance of dense sands could be more significantly raised by applying partial liquefaction histories repeatedly.
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