The railroad tie plate is also called the rail base plate or the soleplate, which is the main component of the crane track or track support system in railway construction. It is also one of the important components in the track structure and plays an important role in damping the wheel-rail power system. With the development of heavy-duty railway transportation, the axle load is increasing day by day. While the rails are gradually heavier, higher requirements are put forward on the performance of the backing plate, and the backing plate is required to have good vibration damping performance, impact resistance, and long service life.
The rail tie plate is not only used to support the rail but also to fix the entire rail fastener system. The rails are fixed to the iron backing plate by bolts or spikes to transfer the load of the rail and part of the load to the sleepers while ensuring the stability of the rail system.