Steel Rail Role in Railtrack System
Steel rail plays a crucial role in the rail track system, serving various functions essential for the smooth and safe operation of trains:
- Providing a Continuous and Level Surface
Steel rails create a continuous and level surface for trains to travel on. This ensures stability and smoothness during train movements, contributing to passenger comfort and operational efficiency.
- Reducing Friction
The special shape of steel rails, with a hardened head and flat bottom, minimizes friction between the rail and the train wheels. This low friction characteristic allows trains to move with greater ease and efficiency compared to other modes of transportation, such as vehicles on roads.
- Serving as a Lateral Guide
Rails act as a lateral guide for train wheels, ensuring that the train stays on its intended path. This guidance helps maintain the stability and alignment of the train, preventing derailments and ensuring safe travel along the track.
- Bearing Stresses
Steel rails bear various stresses generated by the vertical loads transmitted through axles and wheels of rolling stock. They also withstand forces from braking and thermal expansion. The strength and durability of steel rails are crucial for withstanding these stresses and maintaining track integrity.
- Transmitting Loads
Rails transmit the loads from trains to a large area of the track formation through sleepers and ballast. This distribution of weight helps prevent excessive pressure on any single point of the track structure, ensuring long-term stability and durability of the rail track system.