Study on reinforcement of mountain hut subjected to ballistic ejecta impact
| Project/Area Number |
16H03148
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Natural disaster / Disaster prevention science
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| Research Institution | Mount Fuji Research Institute, Yamanashi Prefectural Government |
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Principal Investigator |
Fuji Toshitsugu 山梨県富士山科学研究所, その他部局等, 所長 (00092320)
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| Co-Investigator(Kenkyū-buntansha) |
吉本 充宏 山梨県富士山科学研究所, その他部局等, 研究員 (20334287)
石峯 康浩 鹿児島大学, 地震火山地域防災センター, 特任准教授 (40450259)
山田 浩之 防衛大学校(総合教育学群、人文社会科学群、応用科学群、電気情報学群及びシステム工学群), システム工学群, 准教授 (80582907)
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| Research Collaborator |
Tateyama Kohei
Kobayashi Hidetoshi
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| Project Period (FY) |
2016-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2018: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2017: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2016: ¥10,270,000 (Direct Cost: ¥7,900,000、Indirect Cost: ¥2,370,000)
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| Keywords | 火山噴火 / 噴石 / 山小屋 / 補強 / シェルター / 衝突実験 / 水蒸気噴火 |
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| Outline of Final Research Achievements |
There are many people like climbing several active volcanoes in Japan. Also, it is recommended to use a mountain hut as an evacuation shelter in the case of sudden eruption. However, there is no standard design for doing that because there is insufficient information about the physical property of the ballistic ejecta.
We have conducted the field surveys just after the Mt. Ontake 2014 eruption and the Mt. Kusatsu-Shirane 2018 eruption to estimate the distribution and velocity of the ballistic ejecta. Also, we have carried out the damage investigation of building and gondola due to the ballistic ejecta impact. We have conducted a test of the impact of simulated ballistic ejecta with a cylindrical abrasive through the pneumatic impact test apparatus in some structural specimens and materials. And we have examined the durability of the mountain hut, reinforcement materials, and the methods of reinforcement and proposed some method to improve the impact resistance against ballistic ejecta.
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| Academic Significance and Societal Importance of the Research Achievements |
日本ではこれまで活火山の近傍に建設される木造構造物等への建築基準などが制定されていなかったが、本研究で得られた木造構造物の噴石に対する耐性のデータは、建築基準設定の基準となるデータとなると考えられる。また、本研究で提案された補強方法は、山小屋等の強化が検討されている地域において活用されると考えられる。また、本研究で明らかにされた噴石の分布や数密度のデータは、噴石の挙動を理解するための数値モデルを精緻化する上で最も重要なデータとなりうる。
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Report
(4 results)
Research Products
(12 results)
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[Journal Article] Impact resistance to ballistic ejecta of wooden buildings and a simple reinforcement method using aramid fabric.2018
Author(s)
Yamada, H., Tateyama, K., Sasaki, H., Naruke, S., Kisimoto, H. and Yoshimoto, M.
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Journal Title
Journal of Volcanology and Geothermal Research
Volume: 359
Pages: 37-46
Related Report
Peer Reviewed / Int'l Joint Research
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[Presentation] Preliminary report on damage caused by the ballistic block of the 2018 phreatic eruption of Kusatsu-Shirane volcano2018
Author(s)
Yoshimoto, M., Honda, R., Yasuda, T., Ishimine, Y., Yamada, H., Jiro Komori, J., Terada, A., Hirabayashi, J., Fujii, T
Organizer
Cities on Volcanoes 10
Related Report
Int'l Joint Research
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