TENSION JACK MOVING DEVICE FOR PRECAST CONCRETE BLOCK CONSTRUCTION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a tension jack moving device which quickly performs hanging down of a tension jack placed on a precast concrete bridge girder to the position where PC steel projects on the vertical end face while remarkably saving labor and improving safety. ;SOLUTION: This moving device is provided with tracks 8 (8a, 8b) fixed along the vertical end face 2a to the upper face 2b of a precast concrete bridge girder 2 positioned on the endmost part, and a carriage 10 running on the tracks 8. It is also provided with a pair of horizontal beams 13 fixed to the upper parts of carriage pillars 12 standing on the carriage 10 and extending in the horizontal direction from the vertical end face to the further forward space, a hanging beam 16 arranged between a pair of the horizontal beams 13 so as to make a line square with them and moving from the upper position of the carriage 10 to the extreme end parts of the horizontal beams 13 while being supported with a first slide member 14, and a chain block 18 connected to the lower part of the hanging beam 16.;COPYRIGHT: (C)1999,JPO