FLOOR SLAB REPLACEMENT APPARATUS AND FLOOR SLAB REPLACEMENT METHOD

PROBLEM TO BE SOLVED: To provide a method that can reduce the load applied to a main girder of a bridge when replacing the floor slab of the bridge more than the conventional method and eliminate the need to reinforce the main girder of the bridge during the replacement work of the slab floor.SOLUTION: Leg parts on the bridge surface of a bridge 100, which are arranged face-to-face approximately perpendicular to the bridge axial direction, are provided with two pairs of leg parts 12 arranged in the approximate bridge axial direction, a frame part 14 extending in the approximate bridge axial direction, the vicinity of both ends of which are respectively supported by one of the two pairs of leg parts 12, a track part 16 extending in the approximate bridge axial direction and supported by the frame part 14 and a hoisting means 20 capable of moving in the approximate bridge axial direction along the track part 16. The points of action where pressure from both of the leg parts 12 is applied to the bridge 100 are positioned vertically above the bridge piers 102 of the bridge 100.SELECTED DRAWING: Figure 1 【課題】橋梁の床版の取替えを行う際に橋梁の主桁に加わる負荷を従来の工法よりも低減させて、床版取替え工事の際に橋梁の主桁の補強を不要にする。【解決手段】橋梁１００の橋面上に略橋軸直角方向に対向するように配置されて対となっている脚部が略橋軸方向に２対配置されてなる２対の脚部１２と、２対の脚部１２のうちの１対の脚部１２に一端部近傍を支持され、２対の脚部１２のうちのもう１対の脚部１２に他端部近傍を支持されている略橋軸方向に延びるフレーム部１４と、略橋軸方向に延びていてフレーム部１４に支持されている軌道部１６と、軌道部１６に沿って略橋軸方向に移動できる吊り上げ手段２０と、を備え、脚部１２が橋梁１００に加える力の作用点は、２対の脚部１２のうちのいずれの脚部１２においても、橋梁１００の橋脚１０２の鉛直方向上方に位置している。【選択図】図１