Post, post pressing in pulling removal construction method and post pressing in pulling removal machine

摘要

PROBLEM TO BE SOLVED: To miniaturize and lighten a clamp, to narrow a working range, to shorten a moving time by self-advancing and to posture an attitude at the time of movement. ;SOLUTION: Sections to be held 11 formed in a plate shape thinner than pile bodies 12 and held by clamps 21... for a pile jacking pulling-out machine 20 are installed to the upper sections of the U-shaped sectional pile bodies 12. When the machine 20 is moved on continuous piles 10, the clamps 21 need not be opened largely for releasing holding because there is no irregularity in the side faces of the sections to be held 11. Consequently, the clamps 21 are miniaturized and lightened. The working range of the pile jacking/pulling-out machine 20 is narrowed by miniaturizing the clamps 21. Since the clamps 21 need not be opened largely at the time of movement, the operating time of the clamps 21 is shortened, and the moving time of the pile jacking/pulling-out machine 20 can be shortened. An attitude can be stabilized by mounting wheels rolled on the top faces of the sections to be held 11 on the machine 20.;COPYRIGHT: (C)1997,JPO