1. The role of bridge bearings:

The important structural components connecting the bridge superstructure and the substructure are located between the good cushion stones of the bridge, which can reliably transmit the load and deformation (displacement and angle) of the bridge superstructure to the bridge substructure, and is an important force transmission device of the bridge.

Functional requirements of bridge bearings: firstly, the bearings must have sufficient bearing capacity to ensure reliable transmission of bearing reaction forces (vertical force and horizontal force); secondly, the constraint of the bearing on the deformation of the bridge is as small as possible to meet the needs of free expansion and rotation of the beam body; In addition, the bearing should be easy to install, maintain and repair, and can be replaced if necessary.

2. Classification of bridge bearings:

1. Classified according to the possibility of deformation of the bearing: fixed bearing, one-way movable bearing, multi-directional movable bearing.

2. Classification according to the materials used in bearings: steel bearings, PTFE bearings (sliding bearings), rubber bearings (plate type, basin type), etc.

3. Classification according to the structural form of bearings: arc bearings, rocker bearings, roller bearings, rubber bearings, spherical steel bearings, and tension bearings.

There are many types of bridge bearings, mainly selected according to the support reaction, span, building height and expected displacement, and the commonly used bearings in urban bridges are mainly plate rubber bearings and basin bearings.

Due to the passage of time, rubber bearings will age and break, so what should we do, through the article "The Necessity of Rubber Bearing Replacement and Jacking Replacement Methods" to learn.