Bridge rubber bearing, plate rubber bearing, basin rubber bearing

  1、 Plate rubber bearing is divided by shape: Rectangular plate rubber bearing, circular plate rubber bearing, spherical crown circular plate rubber bearing, circular plate slope rubber bearing 2、 Application of plate rubber bearing: This product is mainly suitable for highway bridges, railway bridges and urban overpasses
The main function is to reliably transmit the reaction force of the upper part to the pier and abutment, and at the same time, it can complete the horizontal displacement and rotation of the beam end caused by the braking force, temperature, shrinkage and creep of concrete and load
The allowable horizontal force of the product is 10% of the vertical, the allowable rotation angle is not less than 40, the friction coefficient is 0
04-0
06, and the horizontal displacement of the movable support is 50mm-250mm, which is divided into five levels
Load grade: 100kn-15000kn 3、 Characteristics of plate rubber bearing: 1
Spherical crown circular plate rubber bearing: spherical crown circular plate rubber bearing is an improved circular plate rubber bearing
The arrangement of interlayer rubber and steel plate is exactly the same as that of circular plate rubber bearing, while the spherical surface is made of pure rubber on the top surface of the bearing
The maximum thickness of the spherical center rubber is 4-13mm and the spherical edge is 15mm, so as to adapt to the 3% to 4% longitudinal and transverse slopes
The center of the contact surface between the beam and the bearing tends to the center of the circular plate rubber bearing
The reaction force at the beam end is gradually diffused and transmitted to the following layers of steel plate and rubber layer through the rubber on the spherical surface
Add a semicircular rubber ring with diameter d = 2
5mm on the bottom surface of the rubber bearing
When the bearing is stressed, the bottom ring shall be deformed and compacted first, and the stress condition of the bottom surface shall be adjusted to improve or avoid the void phenomenon on the bottom surface of the bearing and make the stress on the bottom surface of the bearing uniform
2
Slope bearing: it can adapt to the vertical and horizontal slopes of various bridges
This variety is a wedge-shaped slope bearing based on the round plate rubber bearing
The angle of the slope is made according to the longitudinal and transverse slopes of the bridge, which greatly facilitates the design and construction of the bridge, and effectively eliminates the void phenomenon between the beam, support and pier and abutment
Compared with the spherical crown circular plate support, it has the advantage that it is not limited by the angle of the longitudinal and transverse slopes of the bridge Rubber bearings series I
plate rubber bearings for highway bridges
Plate rubber bearings for bridges are made of rubber sheets and thin steel plates with certain specifications, sizes and quantities, which are adhered and vulcanized under certain pressure and temperature
This product has sufficient rigid stiffness, good elasticity and shear deformation capacity, can reliably transmit the reaction force of the bridge superstructure to the pier, and adapt to the rotation angle and horizontal displacement required by the beam structure
a
Load grade: 100kn-10000knb
Standard: produced according to JT / t4-93 standard specification series of the Ministry of communications
Special specifications can be produced according to user drawings
C
According to the structure, it is classified as follows: Rectangular ordinary plate rubber bearing (GJZ Series) Ordinary plate rubber bearing , Circular ordinary plate rubber bearing (GJZ Series) bridge plate rubber bearing , Rectangular Teflon plate rubber bearing (GJZ Series) Teflon sliding rubber bearing , Circular Teflon plate rubber bearing (gyzf4) II
Basin rubber bearing of highway bridge
The working principle of basin rubber bearing is to use the rubber block sealed in the steel basin, and its deformation is restrained and in the state of three-dimensional stress, so the bearing capacity is greatly improved
At the same time, the elastic rubber in the steel basin has the function of similar liquid to ensure that the beam can move vertically
Relying on the low friction coefficient between PTFE plate and stainless steel plate to realize the horizontal displacement of the beam, the rotation is flexible
Metal parts such as steel basin can greatly improve the strength of rubber and PTFE materials
Therefore, the pot type rubber bearing has its unique advantages: compared with the general cast steel roller bearing, it has the advantages of compact structure, small volume, light weight, low building height, convenient processing and manufacturing, simple maintenance, steel material saving and low cost
Compared with the general plate rubber bearing, it has the advantages of large bearing capacity, large allowable bearing displacement, flexible rotation and so on
Basic structure of basin type rubber bearing: it is generally composed of upper bearing plate, sealing ring, stainless steel plate, Teflon sliding plate, intermediate steel plate, rubber block, lower bearing plate (steel basin), anchor bolt, etc
Different series are slightly different
At present, the pot type rubber bearing series widely used in China include: GPZ series, GPZ (II) series and PZ series planned and designed by the Ministry of communications; Tpz series, tpz-1 series, tpz-2 series and qpz series designed by the railway Architecture Research Institute of the Academy of Sciences of the Ministry of railways; Special bridge 8156 series designed by the professional design institute of the Ministry of railways, etc
A
Load grade: 1000kn-50000knb
Standard: it is produced according to JT / t4-93 standard specification series of the Ministry of communications
Special specifications in the product specification catalog can be produced according to user drawings
C
According to the structure, it is classified as follows: GPZ series bridge basin rubber bearings Qpz series bridge basin type rubber bearing QZ series spherical bearing for highway bridge basin type rubber bearing Tpz standard series pot type rubber bearing 8156 basin type rubber bearing for railway special bridge ,