There are several types of bridge bearings used in structural engineering, including:
1. Fixed bearings: These bearings provide complete support to the structure and do not allow any movement.
2. Expansion bearings: These bearings are designed to allow limited movement in the structure due to expansion and contraction caused by temperature changes.
3. Roller bearings: These bearings allow a structure to move in one direction, typically perpendicular to the direction of the rollers.
4. Pin bearings: These bearings allow a structure to rotate around a fixed point, providing support for structures with large spans.
5. Elastomeric bearings: These bearings are made of rubber or other flexible materials and allow movement in the structure due to changes in temperature, wind loading, and other external forces.
6. Sliding bearings: These bearings allow the structure to slide relative to the support structure, typically in one direction.
7. Spherical bearings: These bearings allow the structure to rotate and move in any direction, providing support for complex bridge designs.
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