Hebei Youou Bridge Materials
Pot-type Steel Support
Heavy-duty bridge bearing for vertical load transfer, rotation, displacement control and seismic buffering.
Product Overview
Mainstream bearing system for large and medium span bridges
Pot-type steel support, also called pot bearing or basin rubber bearing, is a mainstream load-bearing support used for large and medium span bridges. It combines a steel pot, rubber compression block, sliding plate, stainless steel plate, upper and lower support plates and anchoring components.
Compared with ordinary laminated rubber bearings, pot-type supports provide larger bearing tonnage, stronger rotation capacity and more controlled displacement performance.
Core Functions
Designed for Load, Movement and Bridge Safety
Vertical Load Transfer
The steel pot, compression rubber block and upper and lower plates work together to bear and transfer large bridge loads safely to the substructure.
Thermal Displacement
Stainless steel sliding plates and PTFE sliding plates help the bridge adapt to thermal expansion, concrete shrinkage and long-term creep.
Beam-End Rotation
The confined rubber compression block provides flexible rotation capacity for box girders, T-girders and continuous beam systems.
Shock and Vibration Buffering
The rubber core helps absorb vehicle impact, vibration and small dynamic loads, improving bridge service comfort.
Horizontal Force Restraint
Fixed and guided types can restrain horizontal force while allowing designed longitudinal or multi-directional movement.
Seismic Buffering
Seismic pot bearings can be selected for interchange bridges, high seismic areas and projects requiring higher displacement safety.
Structure and Components
Steel pot, rubber core and sliding system in one bearing
The main components include upper support plate, lower steel pot, rubber compression block, PTFE sliding plate, stainless steel polished plate, dust sealing ring and anchor bolts.
Optional accessories include embedded anchor plate, leveling steel plate and support mortar. Anti-corrosion treatment can use sand blasting and rust removal, epoxy zinc-rich primer and topcoat.
Product Series
Selection by Bearing Type, Load and Movement
| Series | Type | Typical Position | Capacity | Movement |
|---|---|---|---|---|
| GPZ Standard | GD Fixed | Central pier and fixed support point | 1000-60000 kN | 0 |
| GPZ Standard | DX Guided | Intermediate pier expansion position | 1000-60000 kN | +/-50 to +/-300 mm |
| GPZ Standard | SX Free Sliding | Abutment or side pier movement position | 1000-60000 kN | Longitudinal +/-50 to +/-300 mm, transverse +/-5 to +/-50 mm |
| GPZ Cold-Resistant F | GD / DX / SX | Northern low-temperature bridge projects | Full tonnage range | Same as standard series |
| GPZ(KZ) Seismic | KZ-GD / KZ-DX | High seismic areas and interchange bridges | 800-55000 kN | +/-50 to +/-250 mm |
| QPZ Isolation | GD / DX | Extra-large span and sea-crossing bridges | 5000-60000 kN | +/-100 to +/-300 mm |
Capacity and Naming
Common capacity from 1000 kN to large custom tonnage
Typical bearing capacities include 1000 kN, 1500 kN, 2000 kN, 2500 kN, 3000 kN, 4000 kN, 5000 kN, 6000 kN, 8000 kN and 10000 kN. Larger tonnage can be customized according to project drawings.
Applications
Suitable for heavy-load and large-span bridge projects
Pot-type steel supports are used for box girders, T-girders, continuous bridges, interchanges, viaducts, heavy-load bridges and large-span bridge structures.
Need Pot-type Steel Supports?
Send us bridge drawings, bearing capacity, movement range, fixed or movable type and project requirements. We will help confirm the suitable model and quotation.