Replacing device for spatial curved surface sling of special-shaped arch bridge

The utility model discloses a device for replacing a spatial curved sling of a special-shaped arch bridge. The device comprises a vertical plane, two temporary suspenders, a dip angle measuring device, a sling force measuring device, two clamps for clamping the upper end and the lower end of a special-shaped arch at the two sides of the sling to be replaced, and a lower joist mounted at the bottom of a cross beam, wherein the vertical plane is the plane where the axis of the sling to be replaced is located and is perpendicular to the cross section of the special-shaped arch where the axis of the sling is located, and the lower joist is installed at the intersection of the vertical plane and the bottom face of the cross beam. The dip angle measuring device is used for measuring dip angles of the two temporary suspenders relative to a vertical plane; the sling force measuring device is used for measuring the sling force of the sling to be replaced. According to the replacing device for the special-shaped arch b