REINFORCEMENT METHOD WITH SENSORS OF RESTORATION OF THE NOTO HANTO EARTHQUAKE

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  • 能登半島地震の復旧で施工したセンサー機能付補強土工法
  • ノト ハントウ ジシン ノ フッキュウ デ セコウ シタ センサー キノウ ツキ ホキョウ ドコウホウ

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Abstract

Several The Noto Hanto Earthquake with magnitude of 6.9 occurred around 40km of the Noto Peninsula Oki on March 25, 2007. The Noto Hanto Earthquake caused enormous damages to road, airport and railway facilities, as well as the embankment and liquefaction of ground etc. Near the Noto toll road, the acceleration of earthquake was estimated 600~900gal. At the section of Noto toll road from IC-Tokudaotsu to IC-Anamizu eleven locations were found to occur large-scale collapse of embankment. For the collapsed embankment, the early restoration is developed by the temporary restoration, and then the long-term restoration is employed. The long-term restoration is performed based on the reinforcement method using the geotextile with excellent earthquake resistance. For one of the eleven large-scale collapsed locations, since the collapse of 250m extension and 25m high is large-scale, the embankment was restored by the reinforced soil with sensors to estimate the healthiness in the future. This paper reports the dynamic observation of construction of restoration and the monitored results after construction.

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