FRP wrapping for bridges strengthening

Because of the neutralization of the beam concrete and the increasing speed of the existing lines and the increasing transport volume, there are a lot of transverse cracks in the beam body and the phenomenon of shedding and exposure of the protective layer, which has always been refurbished as a key disease bridge. The masonry repair is carried out in the daily life. The cracks still appear and the protective layer is empty after the repair. The train passes through the deflection obviously. In view of the above conditions, the bridge has been reinforced with carbon fiber.

After the reinforcement of CFRP wrapping, the falling disease of the bridge has been effectively restrained. Due to the effective hoop of carbon fiber cloth, there is no empty sound and separation phenomenon. The deflection of beam body is obviously reduced when the train passes. It is essential to eliminate the input of the concrete cracking of the bridge. At present, it is only necessary to observe the reinforcement effect of the technology and greatly reduce the input of the maintenance work.