Bridge bearing replacement is a complex process that requires strict step-by-step operation. First of all, after the beam body is in place, it is necessary to check the closeness between the upper and lower steel plates of the bearing and the stepping stone and the bottom of the beam, so as to ensure that all the upper and lower parts of the support are closely pasted.
If there is eccentric compression, uneven support or hollowing phenomenon, the beam body needs to be jacked again, and the steel plate under the bearing is added to the pad steel plate for fine-tuning, until the support is all close to the bottom of the support. Secondly, after the bearing inspection is qualified, it is necessary to remove jacks, temporary supporting steel plates and other jacking equipment, and take out the wooden board between the beam body and the baffle, and clean up the construction waste and garbage. In terms of maintenance, regular maintenance should be carried out, including the surface paint of steel parts, regular scrubbing and lubricating oil on the rotating part of the roller shaft and the rotating shaft, scrubbing the stainless steel surface of the sliding bearing, and checking the anchor bolt of the bearing. In actual operation, different treatments need to be carried out according to the actual situation of the bridge, such as treating the disease existing in the foundation and pier abutment first, and then treating the main beam, or deciding whether to retain or completely remove these two according to the specific situation of the bridge deck system and ancillary works. In short, bridge bearing replacement needs to be carefully operated to ensure construction quality and safety.