Bridge Bearing & Expansion Joint

Application

Bridge Bearings: for highway bridges, railway bridges, and urban/municipal bridge structures; provide vertical support, horizontal load transfer/release, rotation and displacement accommodation

Bridge Expansion Joints: accommodate 3D bridge deformations (longitudinal/transverse movement, angular/plan rotation, etc.), transfer vertical and horizontal braking forces, and provide deck sealing (water/dust proofing)

Example project types: long-span cable-stayed bridges, urban elevated viaducts/expressways, rail transit/railway bridges

Standard

EN 1337 (Structural bearings): e.g., EN 1337-2 / EN 1337-5 / EN 1337-7

BS 5400

AASHTO LRFD Bridge Design Specification (2004)

DIN 4141

ETAG-032 (referenced for expansion joint project compliance)

CRCC / CCPC / JT/T (China requirements): e.g., JT/T 327-2004, JT/T 327-2016, JT/T 391-2009, JT/T 4-2004, JT/T 4-2019, GB 20688.2-2006 (as listed in overseas reference table)

Capability

Bridge Bearings

Pot Bearings: typical load design 800 ~ 60,000 kN

Types: fixed / guided sliding / free sliding

Materials: PTFE + stainless steel for sliding/displacement; elastomer pad (NR, suitable down to -40°C)

Spherical Bearings: typical load design 800 ~ 160,000 kN

Materials: PTFE + stainless steel

Can be configured as fixed / guided sliding / free sliding depending on restraints and design

Expansion Joints

Covered types (as described): large displacement roadway/railway joints, modular expansion joints, comb plate expansion joints, elastomeric seamless expansion joints, etc.

Manufacturing & installation capacity (as described):

Annual output for bridge expansion joint systems: 200,000 m

Large displacement expansion joints: 180+ sets/year

Displacement capability examples from the provided profile: 2100mm / 1120mm / 1600mm / 1280mm / 1520mm (project-dependent)

Certificates

CRCC,CE,ETA

Approval

Track record across multiple international projects. Subject to project-specific approval by the owner, engineer, or consultant.