Predicting the Fatigue Life of Tunnel Compressive Fire Doors under Cyclic Loading Conditions AbstractThe fatigue performance of tunnel compressive fire doors is crucial for eliminating safety hazards during the operational phase of infrastructure projects. This study, conducted by the research team at Yunnan Guangdun Door Industry Co., Ltd., explores the fatigue life prediction of tunnel […]
Tag Archives: Tunnel Compressive Fire Doors
Tunnel Compressive Fire Doors: Critical Safety Solutions for Underground Passages
As a leading tunnel fire door manufacturer in China, YK Commercial Door Company engineers high-performance compressive fire doors that meet strict tunnel safety standards (EN 1366-3, NFPA 502, GB/T 24480). Our doors provide fire containment, smoke control, and structural integrity in subway systems, road tunnels, and underground facilities.
1. Key Features of Tunnel Compressive Fire Doors
✔ Dual Fire & Pressure Resistance – Withstands fire + air pressure waves from train/traffic movement
✔ Extended Fire Ratings – 60/90/120-minute integrity (EN 1363-1 tested)
✔ Heavy-Duty Construction – 3-6mm steel with reinforced frames
✔ Smoke Seals – Triple-layer intumescent + brush seals (≤0.03m³/s/m leakage)
✔ Corrosion Protection – Epoxy powder coating (C5-M corrosion resistance)
2. Technical Specifications
| Parameter | Standard Model | High-Performance Model |
|---|---|---|
| Fire Rating | EI 60 | EI 120 |
| Pressure Resistance | ±1000 Pa | ±3000 Pa |
| Operating Temperature | -30°C to +80°C | -40°C to +120°C |
| Door Leaf Thickness | 45mm | 60mm |
| Seal System | Intumescent + brush | Intumescent + silicone inflatable |
3. Unique Design Considerations
A. Pressure Wave Management
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Reinforced hinges (EN 1935 Grade 14)
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Multi-point locking (6-12 locking bolts)
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Aerodynamic profiles to reduce wind load
B. Emergency Operation
✔ Fail-safe closing during power outages
✔ Manual override with 150N max operating force
✔ Integrated escape hardware (panic bars compliant with EN 1125)
C. Maintenance Access
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Removable threshold for debris cleaning
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Inspection windows for seal condition checks
4. Compliance & Testing
Global Standards Met:
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Europe: EN 1366-3 (tunnel testing), EN 1634-1 (fire resistance)
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USA: NFPA 502 (road tunnels), UL 10C (fire rating)
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China: GB/T 24480 (tunnel doors), GB 12955 (fire rating)
YK’s Testing Protocol:
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Fire endurance (hydrocarbon curve testing)
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Pressure cycling (5000+ pressure wave simulations)
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Impact resistance (100kJ/m² debris impact test)
5. Project Applications
✔ Subway Systems – Emergency cross-passage doors
✔ Road Tunnels – Technical room access doors
✔ Underground Utilities – Power station compartments
✔ Mining Tunnels – Refuge chamber entrances
Recent Project:
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Shanghai Metro Line 14 – Supplied 280+ EI 120 compressive fire doors
6. Why Choose YK Tunnel Fire Doors?
✅ Tunnel-Specific Engineering – Designed for dynamic pressure environments
✅ Third-Party Certified – SGS, TÜV, and CNAS test reports available
✅ Custom Solutions – Non-standard sizes up to 3m × 3m
✅ 25-Year Service Life – Maintenance-friendly design