Advantage 1: Reducing Train Vibration Impact
Polyurethane roadbed has excellent shock absorption performance and can effectively absorb the vibration energy generated during train operation. Its flexible material properties make the train run more smoothly, which is particularly suitable for urban rail transit systems with high requirements for vibration control. The elastic deformation of the pad absorbs the dynamic loads of the train before they reach the track structure, reducing the impact on the rails, sleepers and the surrounding environment.
Advantage 2: Reducing Noise During Train Operation
In urban rail, polyurethane roadbed can effectively suppress structure-borne noise and air-borne noise during train operation, and better meet the dual requirements of urban rail for environmental protection and quality of life of residents. The vibration damping of the pad reduces the noise radiated by the rail and the structure, and the noise reduction is particularly valuable in residential and commercial areas along the line.
Advantage 3: Relieving Track Stress and Extending Service Life
Polyurethane ballast reduces the bending stress and fatigue damage of the rails by optimizing the force transmission method, thereby improving the overall durability of the track structure. The pad distributes the wheel load over a larger area and provides the elasticity that reduces the stress concentration, and the result is a longer service life for the rails, the sleepers and the fastening components.
Advantage 4: Improving Roadbed Bearing Capacity
Polyurethane roadbed performs well in distributing train loads, which helps to improve the bearing capacity of the roadbed and the underlying layer, thereby reducing roadbed pressure and the incidence of common diseases such as mud overflow and subsidence. The load distribution protects the substructure and reduces the maintenance required to keep the track geometry.
Applications
Polyurethane elastic pads are used across the railway system, particularly in urban rail transit, where vibration and noise control is a priority, and on lines where the track structure must be protected from the impact of heavy traffic. The pads are also produced in other polyurethane track pad types for special applications, and the pad specification is matched to the line conditions.
Frequently Asked Questions
What is the first advantage of polyurethane pads? Excellent shock absorption that effectively absorbs the vibration energy generated during train operation, reducing the vibration impact transmitted to the track structure.
How do polyurethane pads reduce noise? By suppressing structure-borne noise and air-borne noise during train operation, meeting the dual requirements of urban rail for vibration and noise control.
How do the pads extend track life? By optimizing the force transmission method, they reduce the bending stress and fatigue damage of the rails, improving the overall durability of the track.
What does the pad do for the roadbed? It distributes the train load well and improves the bearing capacity of the roadbed and the underlying layer, reducing roadbed pressure and diseases such as mud overflow.
Where are polyurethane pads mainly used? In urban rail transit, where vibration and noise control is a priority, and on lines where the track structure must be protected from impact.
