Detachable beam formwork reinforcing device and construction method

The invention provides a detachable beam formwork reinforcing device and a construction method, and belongs to the technical field of building construction.The device comprises a bearing rod, a fixed rod, a movable rod and side ribs, the movable rod is arranged on one side of the fixed rod in a sliding mode, and the side ribs are movably arranged on the sides, close to each other, of the fixed rod and the movable rod respectively; the top of the bearing rod is attached to the bottom of the beam formwork, the side ribs on the two sides abut against the left side face and the right side face of the beam formwork correspondingly, monitoring mechanisms are arranged on the side ribs correspondingly, and each monitoring mechanism comprises an abutting block, a monitor, a controller and an indicator lamp. The clamping action range of the device is enlarged through the horizontally-arranged side ribs, the input number of the device is reduced, the reinforcing effect is good, monitoring mechanisms are arranged on the