地盤改良(3)

[III-313] Subgrade improvement of soft ground using Lattice-Flame-Reinforced Method

〇Akihiko Okamura¹, Takahiro Ogawa², Michitaka Okamoto³, Hirotoshi Mori⁴ (1.Ashimori industry, 2.Eguchi, 3.Kajima corporation, 4.Yamaguch univercity)

Keywords:soft ground, subgrade, geotextile

The subgrade was improved for temporary road construction on paddy fields. Since the cultivated soil could not be improved, a sheet was laid and Latice Frame was placed on it. The Lattice Frame is formed by filling mortar in a tubular fabric, and the improved ground can be formed by the grid spacing and the thickness of the crushed stone laid on the grid. In the preliminary design, the value of K30 was set arbitrarily and a road pavement plan was made. After the subgrade was completed, a flat plate loading test was performed to confirm that the K30 value set in the design was satisfied.