BRIDGE FLOOR SLAB DISMANTLING METHOD AND ITS DEVICE

摘要

PROBLEM TO BE SOLVED: To easily dismantle floor slabs by positioning reaction force leg sections to adjacent blocks on both sides, building a removal girder between the reaction force leg sections to fix, installing a reaction force jack on the central part, and providing supporting point plates and bar bodies to both ends to suspend the blocks. ;SOLUTION: Reaction force leg sections 7 are positioned to blocks 3b adjacent to a block 3a. A removal girder 6 is built between the leg sections 7 and is fixed. Then, a reaction force jack 8 is installed on the center thereof. Successively, supporting point plates 9a are fixed on the girder 6, and one end of each of bar bodies 9b is connected to a piston 8a of the jack 8 with a hinge 15a in a turnable manner. Then, the other end is mounted on a roller 11. The block 3a is connected through hang bolts 10. When the jack 8 is operated to operate the piston 8a downward, better dynamic point of each of the bar bodies 9b is pulled downward with the supporting point as the center, and load point thereof is pulled upward. The block 3a is pulled upward with the bolts 10 accordingly. By this constitution, one kind of device can cope with hang-up capacities.;COPYRIGHT: (C)1997,JPO