Dynamic Behavior of Small Earth Dam with Central Core Stabilized by Lime

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  • 石灰処理されたコアを有するため池の動的挙動
  • セッカイ ショリ サレタ コア オ ユウスル タメイケ ノ ドウテキ キョドウ ゲイヨ ジシン ニ ヨル ヒガイ ジレイ カラ ノ ケントウ
  • A case study of the small earth dam damaged during the Geiyo Earthquake in 2001
  • 芸予地震による被害事例からの検討

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This paper clarifies the properties of ground motions observed by K-net and KiK-net of National Research Institute for Earth Science and Disaster Prevention during the Geiyo earthquake in 2001, and non-linear seismic response analyses with Ramberg-Osgood model are conducted for a damaged dam. To investigate the relationship between crack generation and properties of the dam, especially to verify the effect of soil stabilized by lime and water level of reservoir, 4 cases of analyses are carried out. As a result, soil stabilized by lime is shown to have a significant effect on the crack generation at the top of dam and these are independent of water level. Sliding failure during the earthquake was not occurred and also the slope stability can be confirmed by the evaluation with local safety factor derived from the analytical results.

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