Description
Technical Parameters
Railway Spikes Technical Specifications
Definition & Function
- Railway spikes are fasteners used to mechanically secure rails to wooden sleepers, providing:
- Vertical fixation: Resists wheel loads (pull-out force ≥40kN)
- Lateral restraint: Prevents rail displacement (lateral resistance ≥12kN)
- Insulation: Some types meet track circuit requirements (resistance ≥10⁸Ω)
Types & Standards
| Type | Design Features | Standard | Applications |
|---|---|---|---|
| Dog Spike | 90° hooked head, ribbed shank | TB/T 564-2020 | Conventional wood-tie tracks |
| Screw Spike | Fully threaded, requires sleeve | EN 13481-1 | Concrete ties/bridge transitions |
| Elastic Spike | Rubber bushing for vibration damping | AREMA Ch.30 | Urban transit vibration zones |
| Insulated Spike | Nylon-coated steel core | IEC 62128-1 | Electrified track circuits |
Key Parameters
| Parameter | Dog Spike | Screw Spike | Test Method |
|---|---|---|---|
| Material | Q235A carbon steel | Quenched 45# steel | GB/T 700 |
| Coating | Hot-dip zinc (≥85μm) | Dacromet coating | ISO 1461 |
| Pull-out Force | ≥40kN | ≥60kN | TB/T 564 |
| Installation Torque | 150-200Nm | 300-350Nm | EN 13481-5 |
| Fatigue Life | 500k cycles | 1M cycles | UIC 510-2 |
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