STUDY FOR THE MAINTENANCE AND REPLACEMENT OF GROUND ANCHORS USING DETERIORATION MODEL

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  • グラウンドアンカーの劣化度モデルと維持・更新に関する検討

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 Ground anchor technique has been widely used for stabilizing cut slopes and embankments in Japan for the last thirty years. As ground anchors are anticipated to be deteriorated by geological environments such as ground water and natural disasters such as earthquake and typhoon, it is necessary to evaluate appropriately the damage of anchors as well as the stability of slope reinforced by deteriorated ground anchors. This paper analyzed the reliability of soundness diagnosis based on the past regular surveys and lift-off tests statistically, proposed a deterioration model for a single ground anchor using the Weibull distribution and finally assessed the stability of reinforced slope with the proposed model.

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