| 摘要 |
The present invention is provided with: a step for causing the rotary pressing-in of a rotary press-in pile (P) into the ground (G) by means of rotating the rotary press-in pile (P), which has a helical blade (Pa) at the tip thereof, while pressing downwards; and a step for causing the rotary pressing into the ground (G) of a reaction pile (45) that is smaller than the rotary press-in pile (P) and that has a helical blade (45a) at the tip thereof. The rotary reaction force and upwardly pressing reaction force arising when causing the rotary pressing-in of the rotary press-in pile (P) into the ground (G) are caused to be borne by the reaction pile (45), which is applied first. |
