LIFTER OF BRIDGE BEAM USING REVERSE TEMPORARY BRACKET AND METHOD THEREOF

摘要

PURPOSE: A lifter of a bridge beam using a reverse temporary bracket and the method are provided to contribute to the stability and long-life of a structure by pulling a bridge without damaging the existing bridge structure, to construct easily by using a lower beam bearing type temporary bracket assembled on a site by separating and manufacturing in three parts to move and install easily, to execute works safely, to apply a jacking method rapidly by assembling a lower pre-cast beam bearing type temporary bracket to the various bridges, and to improve work efficiency without hindrance on works by applying the installation site of the vertical section of a beam in consideration of the work efficiency. CONSTITUTION: A lifter of a bridge beam using a reverse temporary bracket comprises: a C-shaped reverse temporary bracket(10) coupled to the lower end of each PC beam(2) to support upward and composed of a floor plate combined to the lower side of the PC beam, a side plate coupled to the both sides and an L-shaped joint plate welded to the outside of both corners of the floor plate and the side plate; a bearing beam(20) joined to the lower part of a cogged part equipped to the side of the reverse temporary bracket to support the reverse temporary bracket upward, wherein a H-beam(21) is used for the bearing beam; and a lifting instrument(30) installed between the bearing beam and the upper side of a bridge(1) to pull the PC beam, wherein an oil hydraulic jack(31) is used for the lifting instrument.