| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Outline of Final Research Achievements |
A design method of a pocket type rockfall-protection net is based on design guidelines such as Rockfall Mitigation Handbook, and the cumulative absorption-energy system of each structural element and the view of energy loss are useful design techniques for simplification in the design works. However, the evaluation of the energy loss has been regarded as questionable, since the parameters for calculating the energy loss are not defined clearly in the design guidelines.
Through impact response analyses of the energy absorption process in a pocket type rockfall-protection net, this research has found that there is no doubt of the safety in the pocket type rockfall-protection nets designed by the cumulative absorption-energy system and the view of an energy loss.
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