The support is formed on the GYZ series support by a layer of 2 to 4 mm thick polytetrafluoroethylene sheet (F4) according to the surface size of the support. In addition to all the functions of the GYZ series bearing, because it uses the low friction coefficient between the F4 plate and the stainless steel plate at the bottom of the beam, the horizontal displacement of the upper structure is not limited by the shear deformation of the bearing itself, which can satisfy some The large displacement of the bridge is required.