Anti-Aging Laminated Elastomeric Bearing Pads for Bridge

Elastomeric Laminated Neoprene Rubber Bridge bearing Pad
Elastomeric bearing pads is made from multilayers of rubber sheets and steel plates, by high temperature vulcanization bondingand it compress on vertical load and accommodate horizontal rotation and provide lateral shear movement. Elastomeric bearing pads are the most economical solution used in construction of large span bridges and building.In order to avoid damage by movements of thermal expansion, vehicular movement, loading to piers, bridge bearings are used to accommodate these movements so as to reduce reaction forces and bending movement to within safety limits of structure. Neoprene Rubber as well as Natural Rubber is an ideal engineering material for bridge bearings as it is highly elastic and sufficiently soft to accommodate these movements without transmitting harmful stress and also it absorbs and isolates energy from impacts and vibrations.Structure:
- Plain rubber bearing pad is composed by solid rubber.
- Laminated rubber bearingis comporised of layers of rubber sheets and reinforced steel plates
-PTFE sliding bearing which addsteflon top for sliding
Product display
Feature:
A. Small friction coefficient.
B. Larger shear capacity.
C. Suitable for large span bridge construction.
D. Excellent buffering and shock isolation.
E. Withstand vertical load and rotation.
Material classification:
1. According toShape:it can be devided to rectangle rubber bearing pad and roundrubber bearing pad.
2. According to structure, it can be devided to common rubber bearing and ptfe slide rubber bearing
3. According to working temperature, it can be devided to
---neoprene rubber bearing pad, -25 degree to 60 degree
--natural rubber bearing, -40 degree to 60 degree
--EPDM bridge bearing, -45 degree to 60 degree
Material
Neoprene
Natural rubber
50
60
70
50
60
70
Hardness (Shore A)
45 to 55
55 to 65
65 to 75
45 to 55
55 to 65
65 to 75
Tensile strength (min)
2250 psi
2250 psi
2250 psi
2500 psi
2500psi
2500psi
Elongation (min)
400%
350%
300%
450%
400%
350%
Compression set (max) 22 hours
35% at 212ºF
35% at 212ºF
35% at 212ºF
25% at 158 °F
25% at 158 °F
25% at 158 °
Application field:Roadway highway bridge beam,water power engeering, houseanti-seismic facilities
common rubber bearing pad: suitable for bridges, having less than 30m bridge span and small displacement
PTFE sliding bearing: suitable for bridges, having large bridge span, multi-span continuous, simply supported beam continuous plates, big displacement
Production process: