Study for repair with seismic performance of Kumamoto Castle stone wall which is a cultural heritage
| Project/Area Number |
18H01526
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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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| Review Section |
Basic Section 22020:Structure engineering and earthquake engineering-related
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| Research Institution | Kokushikan University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
酒井 久和 法政大学, デザイン工学部, 教授 (00360371)
池本 敏和 金沢大学, 地球社会基盤学系, 講師 (60311677)
宮島 昌克 金沢大学, 地球社会基盤学系, 教授 (70143881)
若井 明彦 群馬大学, 大学院理工学府, 教授 (90292622)
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| Project Period (FY) |
2018-04-01 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2020)
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| Budget Amount *help |
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2020: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2019: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2018: ¥8,060,000 (Direct Cost: ¥6,200,000、Indirect Cost: ¥1,860,000)
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| Keywords | 熊本地震 / 熊本城 / 石垣 / 補強 / 城壁 / 耐震対策 / 振動実験 / 非破壊検査 / 補修 / 復旧対策 / 石垣被害 / 地震 |
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| Outline of Final Research Achievements |
In the 2016 Kumamoto earthquake, more than 80% of the Kumamoto castle stone walls that had been restored so far collapsed again. However, its collapse mechanism and reinforcement measures have not been established. Therefore, we made a three-dimensional model of the ground using the latest non-destructive inspection and geophysical exploration techniques, and clarified the collapse mechanism of the stone wall by advanced analysis. In addition, full-scale experiments were conducted on the large shaking table of the National Research Institute for Earth Science and Disaster Prevention for six types of existing and new stone wall restoration and reinforcement measures. As a result, effective reinforcement measures that can be constructed at Kumamoto Castle have been clarified. This research result was adopted as the "Kumamoto Castle Ishigaki Seismic Diagnosis Guideline" by the Agency for Cultural Affairs for earthquake resistance measures for Kumamoto Castle Ishigaki.
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| Academic Significance and Societal Importance of the Research Achievements |
本研究では、熊本城の石垣が2016年熊本地震により崩壊した原因について最先端技術を利用して地盤と石垣を３D化した解析により明らかにした。また、熊本城石垣が崩壊・孕み箇所を復旧する補強対策がなかったため、防災科学技術研究所で熊本城の実物大の断面構造で熊本栗石を用いた大型振動台実験・解析により効果的工法を提案した成果を挙げた点に学術的意義がある。
また、本研究の成果が、熊本城の石垣の耐震対策を進めるにあたって推奨される標準的な手順と方法、補強を行うにあたって取り得る補強方法と留意点について示す文化庁「熊本城石垣 耐震診断指針（案）」として実際の熊本城修復工事に活用されたことに社会的意義がある。
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Report
(4 results)
Research Products
(47 results)
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[Journal Article] Geotechnical damage in the 2018 Sulawesi earthquake2019
Author(s)
Miyajima, M., Hendra, S., Yoshida, M., Ono, Y., Kosa, K., Oktaviana, I.S., Martini, and Irdhiani
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Journal Title
Journal of Geoenvironmental Disasters
Volume: ー
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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