Description
Technical Parameters
Basic Definition & Purpose
| Term | Description |
|---|---|
| Railway Anchor Bolt | High-strength fastener designed to secure rails/sleepers to foundation |
| Primary Functions | - Prevent rail creep - Resist vertical uplift - Absorb dynamic loads |
Technical Specifications
| Parameter | Specification | Standard |
|---|---|---|
| Material | Carbon Steel (Grade 8.8/10.9) / Stainless Steel (A4-80) | ASTM A325, EN 14399 |
| Coating | Hot-dip galvanized (HDG) / ZnAl15 | ISO 1461, ASTM A153 |
| Tensile Strength | ≥800 MPa (Grade 8.8) | EN ISO 898-1 |
| Corrosion Resistance | Salt spray >1,000 hours | ISO 9227 |
| Installation Torque | 300–450 N·m (lubricated) | AREMA Ch.30, EN 13481 |
Application Scenarios
| Track Type | Installation Method | Typical Anchor Type |
|---|---|---|
| Ballasted Track | Drilled into concrete sleeper | Expansion anchor bolt |
| Slab Track | Embedded in concrete slab | Threaded stud + epoxy grout |
| Bridge Deck | Welded to steel structure | Shoulder anchor bolt |
| Turnouts | High-density installation (every 2 sleepers) | Pandrol e-clip compatible |
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