2022 Fiscal Year Final Research Report
Enhancement of long-term stability evaluation technique for anchor-reinforced large-scale landslide slope in Three Gorges reservoir area
Project/Area Number |
20KK0091
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Research Category |
Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))
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Allocation Type | Multi-year Fund |
Review Section |
Medium-sized Section 22:Civil engineering and related fields
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Research Institution | Gifu University |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
藤原 覚太 東海大学, 工学部, 助教 (40824925)
原 隆史 富山大学, 学術研究部都市デザイン学系, 教授 (90544990)
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Project Period (FY) |
2020-10-27 – 2023-03-31
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Keywords | グラウンドアンカー / 地すべり / 現場計測 / 遠心載荷試験 / 動的数値解析 / 破壊確率 / 信頼性設計 / 振動法 |
Outline of Final Research Achievements |
This study proposed a method for evaluating the long-term stability of slopes with landslide countermeasures. 1) Slope stability evaluation method based on microtremor measurement was proposed for piled anchor installed cut slope. 2) Tension evaluation method based on vibration method was established for anchored slope. 3) Centrifuge model test was conducted to clarify the destabilization process of anchor and pile installed cut slope during earthquake. 4) Application of reliability analysis was confirmed for stability of anchor and pile installed cut slope. The applicability of reliability analysis to the stability of anchored and piled cut slope was confirmed.
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Free Research Field |
地盤工学
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Academic Significance and Societal Importance of the Research Achievements |
本研究は、地すべり抑止工による斜面の長期安定性評価手法を提案した。 1) アンカーと杭を施工した切土斜面について、常時の振動計測による斜面安定性評価手法を提案した。2) アンカー付き斜面において、振動法に基づく緊張力評価法を確立した。3) 遠心載荷実験により、アンカーと杭を施工した切土斜面の地震時不安定化プロセスを明らかにした。4) アンカーと杭を施工した切土斜面の安定性について、信頼性解析の適用性を確認した。
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