| 摘要 |
PROBLEM TO BE SOLVED: To provide a foundation pile and its execution method capable of easily rotatably jacking the foundation pile even when the ground has adhesion by clay and a silt layer, and capable of shortening burying time of the foundation pile by restraining a slide of a blade and the ground by supplying air to the ground in the vicinity of the blade. SOLUTION: A tip part of a steel pipe pile 1 is blocked up. A hole 1b having the shaft direction is formed in the crossing direction for to the shaft of the steel pipe pile 1 by a peripheral wall part in the vicinity of the blade 1a arranged in the tip part. An air supply means for supplying air is installed on the opening end side of the steel pipe pile 1. The air supplied inside the steel pipe pile 1 is blown out of the hole 1b. |
