Research on the Key Technology of Hinge Joint Diseases Treatment without Traffic Interruption for Plate Girder Bridge

The plate girder bridge accounts for a large proportion of bridge types for its advantages of sim- ple structure and convenience in construction. However, during the service stage, it is easy to suffer the hinge joint diseases, which badly weaken the integral rigidity of superstructure and affect the operation safety of the bridge. This paper presents a treatment technology for hinge joint diseases without interrupting traffic, and the main operation steps and key points of the technology are summarized. Through an example of the reinforcement of a plate girder bridge, the deformation data before and after the reinforcement is measured and compared, which verifies the effectiveness of the method.