Method for reduction lateral pressure to bridge abutment by Geosynthetics

概要

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Abutments of the intercross between the Hokuriku and the Banetsu highways (Niigata Chuo IC) were constructed on very soft ground. The intercross consists of three stories roadways. Formerly it was planned to construct those abutments on the 8-13m height embankment. However, since the soft ground exerted huge lateral pressure on the piles, very big caissons were required. In order to reduce the lateral pressures and keep low construction's cost, new construction method along with the using of the geosynthetic were adopted. For caisson A1, light-weighted foam was used in EPS method and for caisson A2, the geogrid was used to reinforce the embankment. The results and efficiency of the new method were confirmed.
国際ジオシンセティックス学会日本支部の論文