Bridge rubber bearing bridge laminated rubber bearing is oil multilayer thin steel sheet of the multilayer rubber vulcanization bonded rubber bearing a generic product, the product has sufficient vertical stiffness, the ability to mount the superstructure Reliable reaction force is transmitted to the piers, bearing with good flexibility to respond to the beam end rotation bridges; there are large shear deformation capacity to meet the horizontal displacement of the upper structure. Cambridge production of laminated rubber bearing rubber products, including: general laminated rubber bearing, tetrafluoroethylene laminated rubber bearings, ball crown laminated rubber bearing three products. Products not only advanced technology, excellent performance, but also a simple structure, low cost, no maintenance, easy to replace buffer isolation, low building height, so popular in bridge bearings, are widely used. Laminated rubber bearing laminated rubber bearing multilayer natural rubber with sheet steel inlay, bonding, vulcanization one kind of bridge bearing products. This type of rubber bearings have sufficient vertical stiffness to withstand the vertical loads, and can be reliably transmit pressure to the upper structure of the pier; there is good flexibility to adapt to the beam end rotation; and a great shear deformation to meet the characteristics of the upper member rubber bearings have simple structure, easy installation, save steel, low cost, easy maintenance, easy to replace and so on. In the complex plate bearing surface sticky layer 1.5mm-3mm thick PTFE plate can be made into rubber bearings PTFE slide in addition to its vertical stiffness and elastic deformation, can withstand the vertical load and adapt beam end rotation, due to the low friction coefficient of the PTFE plate, beam end can slide freely PTFE plate surface, horizontal displacement is not restricted, especially suitable for medium and small loads, use a large amount of displacement of the bridge. Bridge bearing installation (1) respond to the installation location before bearing installation bearing measurement test, bearing mounting surface should sliding or rolling bearing plane parallel to the plane, its parallelism deviation should not exceed 2 ‰. (2) Install the front seat bearing top response activities, the relative position of the base plate to be checked. (3) bearing installation, rolling and sliding surface should be level with the theoretical slope plane is not more than 2 ‰. The cradle and the lower plate focused coping, which deviation is less than 2 ‰. (4) To ensure smooth bearing installation, should generally be in the seat cushion between the bottom and the title of the top surface of the stone, rammed 20 ~ 50mm thick dry hard no shrinkage bedding mortar.