The plate rubber bearing is a kind of bridge bearing product, which is inlaid, glued and vulcanized with multilayer natural rubber and thin steel plate. Rubber bearings of this type have enough vertical stiffness to bear vertical load, and the upper structure of the pressure can be reliably transferred to the pier; have good flexibility to adapt to the rotation of the beam end; to meet the horizontal displacement of superstructure of large shear deformation;
The utility model has the advantages of simple structure, convenient installation, steel saving, low price, simple maintenance and easy replacement.
After the Teflon plate 1.5mm-3mm thick layer on the plate bearing surface, can be made of PTFE sliding plate rubber support in addition to its vertical stiffness and elastic deformation under vertical load and can adapt to the rotation of the outer end of the beam, due to the low friction coefficient of PTFE plate, the Liang Duan in the PTFE surface free sliding level the displacement is not restricted, especially suitable for medium and small load, large displacement bridge use.
First, rectangular (circular) plate rubber bearings
(一)性能:本产品由多层橡胶片与薄钢板镶嵌、粘合压制而发。有足够的竖向刚度以承压垂直荷载，能将 上部构造的反力可靠地传递给墩台，有良好的弹性，以适应梁端的转动;又有较大的剪切变形以满足上部 构造的水平位移。
(1) performance: This product is made of laminated rubber sheet and thin steel plate inlaid, bonded and pressed. There are enough vertical stiffness to bearing vertical load, the upper structure of the reverse force can be reliably transferred to the pier, has good flexibility, in order to adapt to the rotation of the beam end; and to meet the horizontal displacement of superstructure of large shear deformation.
(two) features: This product has been widely used in bridge construction, hydropower projects, housing seismic facilities, compared with the original steel bearing, has simple structure, convenient installation; steel saving, low price; easy maintenance, easy replacement and other advantages, and the low building height, and reduce the cost of bridge design have good beneficial; isolation, live load and seismic force can reduce the impact on the building effect.
Two, tetrafluoroethylene slide plate rubber bearing
(1) characteristics: the product is made of a thick 1.5-3mm PTFE plate bonded on the ordinary plate rubber bearing. In addition to the vertical with normal rubber bearing stiffness and elastic deformation under vertical load and can adapt to the rotation of the outer end of the beam, because of low coefficient of friction between the steel plate and beam bottom tetrafluoroethylene (U = 0.03) the horizontal displacement of bridge superstructure is not restricted.
Plate rubber bearings are commonly used in small and medium highway bridges. They are divided into ordinary plate rubber bearing and PTFE plate rubber bearing. The common bridge bearings are suitable for bridges with spans less than 30m and small displacements. Different plane shapes are applicable to different bridge spans, rectangular supports for orthogonal bridges, circular supports for curved bridges, skew bridges and cylindrical piers
For PTFE laminated rubber bearing is suitable for large span and multi span continuous beam, continuous plate structure of the large displacement bridge. It is also used as a continuous beam and T beam traversing the top slider in the rectangular or circular. Application of PTFE laminated rubber bearings with rectangular or circular ordinary laminated rubber bearing the same.