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EVALUATION OF SHEAR STRENGTH CHARACTERISTICS OFUNSATURATED UNDISTURBED VOLCANIC ASH SOILSUBJECTED TO STATIC AND CYCLIC LOADING FORSLOPE STABILITY ANALYSIS

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九州大学学術情報リポジトリ

Kyushu University Institutional Repository

EVALUATION OF SHEAR STRENGTH CHARACTERISTICS OF UNSATURATED UNDISTURBED VOLCANIC ASH SOIL

SUBJECTED TO STATIC AND CYCLIC LOADING FOR SLOPE STABILITY ANALYSIS

オクリ, アスフィノ, プトラ

http://hdl.handle.net/2324/4110495

出版情報:九州大学, 2020, 博士(工学), 課程博士 バージョン:

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(様式5-2)

氏 名 OKRI ASFINO PUTRA

(オクリ アスフィノ プトラ)

論 文 名 EVALUATION OF SHEAR STRENGTH CHARACTERISTICS OF UNSATURATED UNDISTURBED VOLCANIC ASH SOIL SUBJECTED TO STATIC AND CYCLIC LOADING FOR SLOPE STABILITY ANALYSIS

(静的および繰返し載荷条件下での不飽和・不攪乱火山灰質土のせん 断強度特性の評価と斜面安定への適用)

論文調査委員 主 査 九州大学 教授 安福 規之 副 査 九州大学 教授 島田 英樹 副 査 九州大学 准教授 笠間 清伸

論 文 審 査 の 結 果 の 要 旨

本論文は、不飽和・不攪乱火山灰質粘性土を対象として、一面せん断試験を単調・繰返し荷重下 で体系立てて行い、そのせん断強度および変形特性に与える土構造の乱れの影響を分析するととも に、サクション制御が可能な一面せん断型の試験装置を開発し、土のサクション値がせん断強度に 与える影響を直接評価できるシステムを確立したものである。また、得られた実験結果を実際の崩 壊斜面の安定解析に適用し、土のサクションと土構造の変化を適切に反映することの重要性を論じ たものであり、地盤工学上、寄与するところが大きい。

よって、本論文は博士(工学)の学位論文に値するものと認める。

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