PILE PRESS-IN MACHINE, PILE PRESS-IN METHOD, AND PILE PULL-OUT MACHINE

摘要

PROBLEM TO BE SOLVED: To secure large reactive force while mitigating moment generated by the reactive force and press-in force or pull-out force, when pressing in or pulling out a pile by gaining the reactive force from an existing pile.;SOLUTION: A pile press-in/pull-out machine 1 includes: a first clamp device 21a for gripping an existing pile; a second clamp device 34 for gripping the existing pile; a chuck device 25 having an opening through which a pile may be inserted in a vertical direction, and pressing a side surface of the pile inserted through the opening from outside, for gripping the pile; and lifting/lowering drive devices 24, 32 that drive the chuck device for lifting/lowering, relative to the first clamp device and the second clamp device. A pile 4b is pressed into a ground (or pulled out) by taking reactive force on both sides, while gripping: an existing pile 4c by the first clamp device, the existing pile 4c being adjacent in a first direction to a press-in position of the pile 4b gripped by the chuck device; and an existing pile 4a by the second clamp device, the existing pile 4a being adjacent in a direction other than the first direction.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2017,JPO&INPIT