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As an important part of the bridge, the bridge bearing plays a very important role in the whole of the bridge. It makes the bridge form a whole. The bridge bearing is also an important supporting part of the bridge span structure. It connects the upper structure and the lower structure of the bridge. It can transmit the support reaction force of the bridge span structure to the pier, and it also needs to be able to ensure that the bridge span structure has some static conditions required in the design under the action of load and temperature changes, so as to be able to adapt to the beam The need for body rotation and free expansion and contraction. And it should also have the role of easy installation, maintenance and maintenance. The bearing must also be able to ensure that the position on the pier is fully fixed and cannot slide off. The quality of the bridge bearing directly affects the bridge. Therefore, it is very important to study the bridge bearing.