| 摘要 |
PURPOSE:To settle a concrete pile without noise and vibration by a method in which a rotary shaft-fitting propulsory pile is attached to the tip of a hollow pile, a rotary shaft-thrust flange is attached to the basal end of the hollow pile, and the pile is turned by the rotary shaft. CONSTITUTION:A spiral blade 3 is projectionally provided to the periphery of a conical propulsory pile A, and a rotary shaft-fitting hole 4 of an angular cross section is provided at the center of the pile A. The pile A is connected to the tip of a hollow pile B whose basal end is attached with a flange 17 having a hole through which a rotary shaft of an angular cross section is thrust. The rotary shaft C is inserted into the pile and turned to give a turning force to the hollow pile and the propulsory pile, and thereby the pile is settled. The pile can thus be settled without noise and vibration. |
