| 摘要 |
A foundation comprising (1) a cylindrical shell made of a cast-in-place concrete placed into a ring-like groove which is formed by excavation of the soil at the place of installation of the foundation, leaving a columnar soil located radially inward with respect to the ring-like groove without discharging the soil, and (2) an internal solidified soil formed by solidifying the columnar soil surrounded by the cylindrical shell with a chemical hardener, and a construction method therefor.
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