PILE PULL-OUT DEVICE

PROBLEM TO BE SOLVED: To provide a simple-structured pile pull-out device which can easily and surely pull out an entire pile even if a bent part or a protruding part, such as a knot, a connecting fitting, and the like, exists in the middle of the pile. SOLUTION: A short casing 12 insertable and fittable into a pine pile is fixed to the lower end of a U type steel sheet pile 11, and a ring member 15 having a circular cross section is jointed to the lower end surface of the casing 12. While jet water is sprayed from a jet water spray nozzle 13 on the outer peripheral surface of the casing 12 and vibration is applied to the steel sheet pile 11 by a vibrating pile driver, the casing 12 is made to penetrate into the ground to separate the pine pile and the peripheral ground. In this process, if a protruding part exists in the middle of the pine pile, the ring member 15 slides on the protruding part to guide the casing 12. As the length of the casing 12 is short, interference between the casing 12 and the pine pile is eased even if the pine pile is bent on the way. Thereby, the casing 12 can smoothly penetrate along the pine pile to prevent the pine pile from being broken. COPYRIGHT: (C)2009,JPO&INPIT