Damping steel rail

Abstract

The invention relates to a damping steel rail which comprises a steel rail body, wherein the steel rail body comprises a waist rail, a top rail located at the upper end of the waist rail, and a rail base located at the lower end of the waist rail, a layered structural body is arranged on the surface of the waist rail and extends to the top rail and the rail base along the waist rail, and the layered structural body is provided with an elastic energy consumption layer, a magnetic absorption layer, a damping layer, a restraint layer and a protective layer from inside to outside along the surface of the waist rail. According to the damping steel rail, a dynamic vibration absorbing and restraint damping composite structure is adopted, the vibration absorbing and silencing frequency range can be widened remarkably, and medium-and-low-frequency vibration and noise of the steel rail can be effectively controlled especially. The damping steel rail is especially suitable for new line laying or old line reformation of city subways, light rails, interurban railways, high speed railways and the like.

Description

technical field [0001] The invention belongs to the technical field of rail traffic vibration reduction and noise reduction. More specifically, the invention relates to a damping rail used for laying new lines or reconstructing old lines such as urban subways, light rails, intercity railways, and high-speed rail traffic. Background technique [0002] Noise is a source of environmental pollution, which is extremely harmful to human health. As urban rail trains continue to increase in speed, the wheel-rail noise caused by the increase in train speed is on the rise. Wheel-rail noise is one of the main sound sources when trains are running, and rail vibration is the main cause of wheel-rail noise. [0003] In the field of rail transit, the free damping or constrained damping treatment of the rail, that is, the damping treatment on the surface of the rail, is an effective method to deal with the vibration and noise of the rail. Regardless of free-style damping or constrained dam...

AI Technical Summary

Problems solved by technology

However, due to the phenomenon of corrosion and rust on the rail, under the long-term dynamic load of the train, the bonding strength of the damping structure to the rail body will gradually decrease partially or entirely, thus gradually losing the effect of vibration reduction and noise reduction

[0004] In addition, the damping material is selective to the operating temperature and vibration damping frequency, and only has a good absorption effect on the vibration of a specific frequency range within a narrow temperature range, while the vibration frequency of the subway line is wide, and the temperature difference of certain road sections, especially the ground line Large changes, it is not suitable for ordinary damping plate treatment

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