Key Information Summary of Structural Bearing under EN1337
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Product Type (Including Subtypes) |
Compliant Standards |
Core Features |
Subproduct Types |
Technical Data |
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EN 1337-3, AASHTO LRFD Section 14, ISO 22762-1/2/3 (for seismic rubber isolators) |
1. Material: Natural rubber or neoprene rubber; 2. Built-in steel shims for stiffness control; 3. Capable of shear deformation and rotation; 4. Maintenance-free with long service life |
None |
Vertical load: 100–10,000 kN; Shear modulus (G): 0.9–1.2 MPa; Maximum shear strain: 100% for ordinary bearings, 250% for seismic bearings; Rotation angle: 0.015–0.03 rad; Planar size: 150–600 mm |
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EN 1337-5, AASHTO |
1. Steel pot with restricted elastic pad; 2. PTFE sliding surface for displacement; 3. Stainless steel plate for friction reduction |
1. Fixed pot bearings; 2. Guided sliding pot bearings; 3. Free sliding pot bearings |
Vertical load: 500–30,000 kN; Rotation angle: 0.02–0.03 rad; Sliding friction coefficient: ≤ 0.03; Displacement: ±50–600 mm |
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EN 1337-7, AASHTO |
1. Highest load-bearing capacity; 2. Wide rotation range; 3. Robust and durable sliding mechanism |
None |
Vertical load: 800–50,000 kN; Maximum rotation angle: 0.05 rad; Sliding friction coefficient: ≤ 0.03; Horizontal displacement: ±50–800 mm |
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Sliding Bearings |
EN 1337-2 |
1. PTFE-stainless steel sliding pair; 2. Minimal friction, suitable for bridges with large displacement; 3. Long-term stability and durability |
None |
Typical specifications: Vertical load: 32T, 115T, etc. (customizable); Horizontal load: 6T, 50T, etc. (customizable); Uplift load: 2T (typical value); Lateral displacement: ±40mm, ±75mm, etc. (customizable); Material standards: Mild steel (IS 2062-2011 Grade E250), stainless steel (AISI 304), PTFE (BS 5400 & BS 3784) |
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Seismic Isolation Bearings - Lead Rubber Bearings (LRB) |
EN 15129, ISO 22762 |
1. Lead core included, strong energy dissipation capacity; 2. Hysteretic damping ratio: 15–30%; 3. Suitable for seismic-resistant bridges and buildings |
None |
Maximum displacement: 200–700 mm; Damping ratio: 15–30%; Lead yield strength: 8–12 MPa |
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Seismic Isolation Bearings - High Damping Rubber Bearings (HDRB) |
EN 15129, ISO 22762 |
1. Lead-free, made of pure high-damping rubber; 2. Stable hysteretic curve; 3. Damping ratio: 10–20% |
None |
core parameter: damping ratio 10–20%) |
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Seismic Isolation Bearings - Friction Pendulum Bearings (FPS/TFPB) |
EN 15129, ISO 22762 |
1. Extremely large displacement (up to 1200 mm maximum); 2. Curved sliding surface provides constant restoring force; 3. Suitable for long-span bridges and key structures |
None |
Maximum displacement: up to 1200 mm |
