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What is the hinge joint in bridge structure?

Hinge joint mainly refers to the post-pouring concrete (joint filling) between precast slab beams in bridge engineering. It connects two plate beams, after the plate beams are installed and before the bridge deck pavement construction.

On the one hand, the bearing capacity of the assembled small articulated slab bridge is required to be improved due to the increase of load grade. On the other hand, the insufficient lateral connection stiffness of the small articulated slab bridge leads to the stress on the single girder, which accelerates the damage of the bridge. In order to make the bridge meet the increasing load requirements, it is necessary to carry out necessary and reasonable reinforcement.

Extended data:

Five components of the bridge:

1, bridge span structure: the structure where the route meets obstacles (such as rivers, valleys or other routes).

2. Bearing system: support the superstructure and transfer the load to the pier, and ensure the displacement function of the superstructure under the action of load, temperature change or other factors.

3. Pier: a building that supports the superstructure of a bridge in the river or on the shore.

4. Abutment: located at both ends of the bridge; One end is connected with the dam to prevent the dam from collapsing; The other end supports the bridge to span the end of the superstructure. In order to protect abutment and embankment fill, some protective works are often done on both sides of abutment.

5. Pier foundation: the structure that ensures the safety of the pier and transfers the load to the foundation. Foundation engineering is a difficult part of the whole bridge construction, which often needs to be constructed in water, so the problems encountered are also very complicated.

References:

Baidu encyclopedia-hinge joint