Without affecting the normal traffic of the bridge at all (without interrupting traffic), the reinforcement scheme for comprehensively dealing with the hinge joint related diseases of the slab girder bridge Applicable fields: bridge engineering reinforcement Applicable objects: prefabricated slab bridges (prefabricated hollow slab bridges, prefabricated solid slab bridges) )
Description of the disease: water seepage in the seam, excessive deflection of the slab bottom, longitudinal cracking of the bridge deck pavement, transverse cracking of the bottom of the slab, stress on the veneer Diagnosis of the cause: failure of the seam connection between the slabs, failure of the bridge bearing capacity Glue, the glue "instantaneous curing" repairs the failed joints, hangs the steel mesh on the bottom of the slab and sprays mortar to enhance the bearing capacity of the bridge.
Advantages of the scheme: "Instantaneous curing" ensures a certain operability time, and at the same time, quickly adheres to two adjacent panels that are moving relative to each other; the construction is carried out under the bridge, without interference to traffic.
The reinforcement scheme for repairing hollow slab bridges without interrupting traffic mainly adopts the secondary glue injection process to inject special epoxy reinforcement materials from the bottom of the hollow slab bridge that will not be affected by driving vibration during the curing process. The force transmission function of the joint is to restore the horizontal connection of the bridge.
At the same time, a reinforced mesh high-performance composite mortar layer is added at the bottom of the hollow slab to further improve the bridge's lateral connection and longitudinal stiffness, and turn the hinged slab girder into a multi-chamber structure, so as to repair hinge joints, improve the overall bearing capacity of the bridge, and prolong the service life of the bridge. purpose of life.