2023 Fiscal Year Final Research Report
Development of stability evaluation method of large deformed castle stone walls by geophysical exploration
| Project/Area Number |
21K04255
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 22030:Geotechnical engineering-related
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| Research Institution | Kagawa University |
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Principal Investigator |
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| Project Period (FY) |
2021-04-01 – 2024-03-31
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| Keywords | 石垣 / 物理探査 / 安定性 / 地盤調査 |
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| Outline of Final Research Achievements |
As a result of this study, based on the results of cross-sectional surveys of the stone walls of the Marugame Castle and ground radar surveys, stability diagnosis during earthquakes was carried out using cumulative force line method and circular arc sliding analysis, etc., and it was found that the stability during earthquakes is satisfactory.
A three-dimensional ground map was created at the Kumamoto Castle ruins, incorporating strata classification based on microtremor, and the influence of the ground on damage to stone walls was clarified. the three-dimensional ground map of the Kanazawa Castle ruins was created, and the influence of the topography and surface ground on deformation of the stone walls was clarified.
Microtremor measurements were carried out at the damaged stone walls of Sendai Castle and Shirakawa-Komine Castle, and it was cleared that the thickness of the embankment had a large influence on the damage to the stone walls.
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| Free Research Field |
地盤工学
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| Academic Significance and Societal Importance of the Research Achievements |
築城から400年を超える近世城郭石垣の自然災害による被害が顕著になってきている。文化財石垣は歴史の証拠として後世に長く伝えていく必要がる。本研究は，城郭石垣の物理探査の適用による安定性評価において，城郭石垣のオーセンティシティ（真正性）を考慮した新たな調査方法を構築するものである。
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