| 摘要 |
PROBLEM TO BE SOLVED: To increase the efficiency and accuracy in the burying of a rotating buried pile, which comprises a pile body the lower end of which is closed by smoothly driving the pile in the ground while preventing the displacement of the axis of the pile from occurring. SOLUTION: A spiral blade 3 is provided to the outer peripheral surface of the lower end of the pile body 2 and a bottom plate 4 is fixed to the lower end of the pile body 2 to close an opening at the lower end. A plurality of excavating blades 6 the projecting end sides of which are formed in a triangular plate shape and a supporting member 7 for supporting the excavating blades 6 are attached to the lower surface of the lower plate 4. The plurality of excavating blades 6 project from the lower surface of the lower plate 4 downward of the pile body 2 and disposed sequentially at predetermined intervals in the direction of the rotation about the rotating axis of the pile body 2 and diagonally in the same direction as the rotating direction. Before the pile body 2 buried while rotating is driven, a ground on the forward side in the driving direction is excavated by the plurality of excavating blades 6, and the rotating buried pile 1 is buried in the ground while the sediment at the center of the lower plate 4 is extruded to the outer peripheral side of the pile body 2. COPYRIGHT: (C)2011,JPO&INPIT |
