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Resilient Under Sleeper Pads for Track Vibration Attenuation
The under-sleeper pad serves as a crucial component in railway track structures, primarily functioning to absorb high-frequency vibrations and dynamic impacts generated by passing trains, protect the subgrade and sleepers from structural damage, and provide essential electrical insulation for signaling systems.
Technical description
Meets EN16730
Mounted in the sleeper plant
Common bedding modulus: 0.1 to 0.3 N/mm3
under sleeper pad Benefits
High Elastic Cushioning: Effectively absorbs wheel-rail impact loads, reduces vibration transmission, and improves train running stability.
Uniform Load Distribution: Disperses sleeper pressure to the ballast bed, reduces local stress concentrations, and protects sleeper and trackbed structures.
Excellent Durability: Features aging resistance, wear resistance, and adaptability to complex environments (temperature extremes, humidity, etc.) for extended service life.
Flexible Elevation Adjustment: Compensates for construction tolerances or settlement effects through thickness variation.
Adaptable Stiffness: Matches stiffness requirements of different track sections and mitigates abrupt stiffness transitions in transition zones.
Material of under sleeper pads
Under-sleeper pad materials can be categorized into elastic materials (such as rubber, polyurethane, and foam polyethylene) or rigid materials (including hard plastics and concrete) based on functional requirements. Their design must comprehensively consider track type (ballasted/slab), operational loads (conventional trains/heavy-haul trains), and environmental conditions.
Under sleeper pads application
New Railway Construction:Optimized for high-speed passenger lines and heavy-haul railways to improve initial load distribution, with special applications in soft subgrade stabilization and bridge-to-embankment transition zones.
Existing Track Maintenance:Enables track elevation adjustment with minimal operational interference, significantly reducing maintenance workload.
Environmentally Sensitive Areas:Specifically designed for residential zones and other noise/vibration-sensitive environments to meet stringent environmental standards.
Special Track Sections:Provides enhanced load distribution for soft subgrades, turnouts, and other critical areas to reduce wear and extend service life.
Slab Track Applications:Compensates for elevation deviations and mitigates impact loads on concrete track structures.
GNEE RAIL is the global leader for railway infrastructure system solutions, offering outstanding products, logistics and services for rails, turnouts, signaling and monitoring applications. Creating maximum customer benefit is the driving force behind all activities of the group.
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