| 摘要 |
PURPOSE:To facilitate the embedding of concrete piles by a method in which an excavation shoe provided at the tip of the concrete pile is held by a chucking rod and turned integrally with the pile. CONSTITUTION:A chucking rod 8 is inserted into a concrete pile 1 having an excavation shoe 3 on its tip, and the chuck of the rod 8 is held with the coupler 4 of the shoe 3. A spiral auger is connected to the rear end of the rod 8. The rod 8 is turned by rotation of the auger, the shoe 3 and the pile 1 are concurrently turned to excavate the ground, and the pile 1 is penetrated into the hole. Concurrently, cement milk is injected from the jet nozzle 13 on the tip of the rod 8 onto the peripheral wall 15 of the pile 1 through the small holes 7 and 7' of the shoe 3, and the pile 1 is penetrated. Afterwards, the rod 8 and the shoe 3 are separated from each other, and the rod 8 is pulled out.
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