| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Outline of Final Research Achievements |
We developed numerical models of drifting and run-up ice floes driven by Tsunami, which consists of a continuum and a discrete model. The discrete model is a quasi-3D DEM based on a 2D DEM in which phenomena unique to granular solids such as arch action, jam and pile-up can be simulated with a small computation load. Experiments using synthetic ice were performed to evaluate the simulation method. We clarified the more complicated fracture processes of sea ice on structure through both medium-scale experiments and numerical calculations based on FEM and DEM. We also suggested a simple calculation method of ice collision force during tsunami run-up based on the theoretical approaches, the numerical models and the physical experiments to estimate approximately economic loss caused by tsunami with ice floes in extensive areas. Thus, we developed the support tools to offer information or materials lead to suppose various scenarios including the worst-case for disaster mitigation plans.
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