Urban rail transit track.
The selection of rails for urban rail lines needs to be comprehensively considered based on the specific needs of the project and environmental conditions. At present, Type 60 rails in the domestic market have become the mainstream choice due to their excellent comprehensive performance and wide applicability. However, in specific scenarios, such as high-speed operation or extreme environmental conditions, the superior performance of imported rails may be more suitable.
With the continuous development of urban rail transit, the selection and research and development of rails will continue to advance to meet the growing performance requirements and safety standards.
1. Subway track.
Subway rails are mostly 60kg/m and other models. The rail head hardness requirements are similar to those of railway tracks, but will be adjusted according to the design parameters and operating characteristics of the specific line. Generally, the surface hardness of the rail head is between 280 and 350 HBW. For example, in some subway lines with large passenger flow and short running intervals, in order to improve the wear resistance of the rails, the rail head hardness will tend to be higher to extend the service life of the rails and reduce maintenance costs.
2. Light rail track.
Because the light rail track carries a relatively small weight of trains and has a relatively low running speed, the rail hardness requirements are relatively loose. Usually, the surface hardness of the rail head is between 240.300 HBW. With the development of light rail technology and the increase in the volume of some light rail lines, the rail hardness standards of some new light rail tracks are also gradually increasing to adapt to more complex operating environments.
