Why are steel rails laid on rubble?

Edit:Zongxiang Heavy Industry--Lucas Date:2020-02-21 15:38:21

Steel rails are all laid on gravel, so some people have to ask why they should be laid on gravel instead of directly on the ground.  The reason for this is the following?

1. The load of locomotive and rolling stock is spread on the subgrade surface through the diffusion of rail, sleeper and ballast bed, which plays a role in protecting the subgrade.

2. Provide resistance to longitudinal and transverse resistance of rail rows and maintain the correct geometric position of rails, which is especially important for CWR.steel rail China manufacturer

3. It is used to drain rainwater everyday. When the train passes by, it reduces the vibration and floating dust.

4. Provide certain elasticity and damping to play the role of buffering and damping.steel rail China manufacturer

5. Irregular arrangement of crushed stones can decompose the pressure of the track in different directions, which makes the track more stable and not deformed.

6. Gravel can absorb noise and heat.  The chipped gravel is very irregular in shape, and such stones are easy to break, so that the high heat generated when the train passes through can be absorbed due to the breaking of the stones, and the smooth stones do not have good heat absorption effect.steel rail China manufacturer

The ground flattened by mud is easy to deform, which will cause the train to bump up, while paving stones will make the road surface flat and the train will run safely and smoothly.  Even in winter, the rail will not be lifted due to water freezing and expansion, and the interference of weeds will be prevented to ensure smooth running of the train.

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