What is the difference between plate rubber bearing and PTFE sliding plate rubber bearings?
PTFE sliding plate rubber bearings and rubber bearing are laminated rubber bearing, the distinction between simple it can be said that the PTFE sliding plate rubber bearings for plate rubber bearing, it can use PTFE plate and stainless steel plate to grease sliding resistance minimum.
Plate type rubber bearings (in fact, should be called ordinary plate type rubber bearing) can be seen as a fixed plate type of rubber bearings, can not be used as a sliding bearing.
The small span simply supported beam, longitudinal displacement due to small, then do not need PTFE sliding plate rubber bearings, normal rubber bearing shear displacement can meet the requirements of large span beam; it needs two kinds of bearing with the use。
Structure and performance of plate type rubber bearing
Bridge plate rubber bearing is composed of multilayer rubber sheets and thin plate vulcanization bonding, it has enough vertical stiffness can force reliable transfer to the pier superstructure; have good flexibility, in order to adapt to the rotation of the beam end, and large deformation, the horizontal displacement is full the foot of the superstructure.