What are the daily maintenance of bridge bearings?

The main function of the bridge bearing is to transfer the dead load and live load reaction on the bridge span structure to the pier of the bridge, at the same time, it can ensure the displacement and rotation required by the bridge span structure, so that the actual stress of the structure can be consistent with the calculation diagram adopted in the design, so it is very important to ensure the normal use and integrity of the bearing. The daily maintenance requirements of bridge bearings mainly include: 1. All parts of the bearing should be kept intact and clean. Second, the rolling surface of the rolling bearing should be coated with a layer of lubricating oil regularly (usually once a year). Wipe the rolling surface clean before oiling. Three pairs of steel bearings shall be derusted and anticorrosive, and all parts of the bearings shall be painted for protection except steel rollers and rolling surfaces. For the fixed bracket, the firmness of the anchor bolts should be checked, the support plate should be flat and tight, and the connecting bolts should be tightened in time. Four kinds of rubber bearings should always clean up the sewage, eliminate the water accumulated in the pier cap, prevent the rubber bearings from contacting with grease, and clean up the residual engine oil on the beam bottom and pier cap to prevent the rubber from losing its function due to aging and deterioration. Five pairs of basin rubber bearings should be cleaned regularly, and bearing dust covers should be set to prevent dust from falling into the bearings or rain and snow from infiltrating into the bearings. The exposed part of the bearing should be regularly coated with red lead antirust paint for protection.