Why can't rails and sleepers be laid directly on the ground?

Edit:Zongxiang Heavy Industry--Lucas Date:2020-03-24 10:33:50

The steel rail of the railway is not directly laid on the ground, but the rails are first nailed to the sleepers with spikes, and then the sleepers nailed to the rails are erected on the roadbed covered with numerous small crushed stones. Railway track china manufacturers

This kind of laying has a great advantage, that is, the huge weight of the train will not fall on the extremely small area where the wheels contact the roadbed through the wheels, but will be transferred from the wheels to the rail and then to the roadbed through the sleepers.  The rail is laid on a stable and flat roadbed, which ensures that the train can run smoothly and at high speed.

The wheels of the train roll tightly on the two rails. In order for the train to run safely, smoothly and at high speed, the two rails must be paved very smoothly.  Rails are nailed to sleepers, which in turn are laid on ballast.  Why is it so troublesome? Wouldn't  it be much easier to lay the rail directly on the subgrade surface? Railway track china manufacturers

In fact, the load capacity of the train is very large. If the rail is directly laid on the subgrade surface, the contact area between the rail and the subgrade surface is small, and the weight per unit area is large. If the subgrade surface cannot bear such a large weight, collapse will occur.  Nailing the rail to the sleeper will enlarge the contact area.  However, if sleepers are directly laid on the subgrade surface, not only the direction is not easy to fix, but also subsidence will still occur.  Make the rail skew left and right and uneven.  Therefore, only by laying the sleepers on the ballast can the weight of the train be transferred to the sleepers through the steel rails, and then the sleepers are transferred to the larger roadbed surface through the ballast, so that the contact area is increased, the pressure per unit area is reduced, and the roadbed surface can also carry a large weight of the train. Railway track china manufacturers

ZXsteelgroup specializes in the sales of steel rails, mining supporting materials, steel plate sales and steel plate cutting, and strictly controls the quality. After the products are put on the market, they are well received by customers. If you have any need, please feel free to ask for advice or leave us a message on the website.  We believe that with your advice and help, we will do better.

Tel:+86 18236766038(WhatsApp)

Email: zxsteel@zxsteelgroup.com