Installation acceptance standards for PTFE slide-type rubber bearings (GyzF4) produced by Hengshui Kaixiang

PTFE slide-type rubber bearings can be divided into plate-type round rubber bearings () and rectangular rubber bearings ().
When installing PTFE sliding rubber bearings, attention should be paid to the setting of supporting pads on the top surface of the bridge's piers. The height of the supporting pads should be considered to facilitate the maintenance and inspection of the PTFE sliding rubber bearings. And the possibility of replacing the top beam when replacing the PTFE sliding rubber bearing. It is best to set a certain slope on the edge of the padding outside the bottom plate of the PTFE sliding rubber bearing to facilitate drainage. Since supports with the same specifications and different types have different heights, attention should be paid to adjusting the elevation of the top surface of the padding stone.
. For the concrete carried by the top and bottom plates of PTFE sliding rubber bearings, steel mesh should be configured according to the relevant requirements for local pressure bearing in the highway bridge and culvert design specifications.
The specifications of the PTFE sliding plate rubber bearing can be selected from the specification series table based on the sum of the dead load, live load and eccentric load calculated by the superstructure. Since the bearing has a certain safety factor, there is no need to artificially increase the bearing specification when selecting. When choosing between normal temperature bearings and cold-resistant bearings, it should be determined based on the monthly average minimum temperature in the area where the bridge is located. If the monthly average minimum temperature at the location of the bridge is lower than ℃, cold-resistant bearings should be selected. If the monthly average minimum temperature is not lower than ℃, normal temperature bearings can be selected.
When the displacement required for the design of the movable support is not the value listed in the specification series, attention should be paid to adjusting the reserved hole spacing accordingly.
When the bridge is a cross-sea bridge or a coastal bridge, it should be marked at the appropriate location on the design drawing. We provide users with optional corrosion-resistant stainless steel plates to increase the service life of the basin-type rubber bearings.
Regarding the acceptance standards of the construction unit after the installation of the PTFE sliding rubber bearing is completed
The PTFE sliding rubber bearing should be in accordance with the industry standards of the Ministry of Communications of the People's Republic of China. Carry out acceptance. The materials of each component of the support, such as steel, rubber, PTFE plates, stainless steel skateboards, etc., must meet standard requirements. The appearance quality of the bearing and the fit tolerance between components should comply with the requirements of standards and design drawings. Particular attention should be paid to the fit tolerance between the polytetrafluoroethylene plate and the middle steel plate groove, the sealing ring and the basin ring, and the rubber plate and the steel basin. The appearance quality of stainless steel skateboards and PTFE skateboards should also be inspected, and accessories such as anchor bolts, bottom columns, washers, etc. should be inspected and accepted according to the manufacturer's packing list.
The mechanical properties test of the integral PTFE sliding plate rubber bearing can be carried out according to the standard method. Test items include vertical compression deformation of the bearing and radial deformation of the basin ring. The standard requires that the vertical compression deformation of the bearing under the design load shall not be greater than the total height of the bearing, the radial deformation of the upper port of the basin ring shall not be greater than .r of the outer diameter of the basin ring, and the residual deformation of the bearing shall not exceed the total deformation. To test the friction coefficient of the physical bearing, use a movable bearing or specimen with a bearing capacity no greater than that of the bearing.
Hengshui Kaixiang Rubber Products Co., Ltd.
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Contact person: Manager Hou
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