SEISMIC ANALYSIS OF FILL SLOPE ON INCLINED BASEMENT ROCK

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  • 傾斜基盤層上の斜面の地震応答解析
  • ケイシャ キバンソウ ジョウ ノ シャメン ノ ジシン オウトウ カイセキ

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Abstract

In this paper, a seismic prospecting and a seismic response analysis are performed for a damaged fill slope and a non-damaged fill slope on inclined basement rock due to the Hyogo-ken Nambu earthquake, and the instability mechanism of the slope during the earthquake is discussed. The main cause of instability of the fill slope is the amplification of acceleration and the concentration of shear strain in the part between the basement rock and overburden. The former causes small failures such as damage to stone masonry, and the latter causes large failures on the inclined basement rock. Also, the concentration of shear strain is closely related to the thickness of the overburden.

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