Advances in Constructional Engineering

During the operation of the XX national and provincial highway overpass across the river in Tangshan City, it was found that some beams had U-shaped cracks to varying degrees. The cause of these cracks is unknown, but it must be given high attention. At the first time when the U-shaped cracks were discovered, the maintenance unit collaborated with the inspection unit to conduct an overall inspection of the bridge's appearance and technical condition. From the perspective of appearance alone, it is impossible to determine whether the entire bridge meets the bearing capacity requirements. To ensure safety in use, it is recommended to conduct load test and detection of the current bearing capacity and the cause of the cracks for this bridge.

Bridge; Disease; Inspection; Maintenance; Safe operation