A Ballastless Track Vibration Damping Structure with Uniform and Continuous Rigidity

Abstract

The invention belongs to the technical field of ballastless track, and proposes a ballastless track with uniform rigidity and continuous vibration damping structure, which mainly includes steel rail (8), track bed plate (1), gauge block (4), and spring bars (5); There are two parallel grooves for laying steel rails (8) on the track bed plate (1), and a plurality of continuously laid steel rails (8) are located in the grooves; an elastic The under-rail pad (7) and the under-rail pad boots (6); the under-rail pad boots (6) are continuously laid in two longitudinally arranged grooves on the track bed, and the under-rail pad boots (6) are "U "shaped structure; the elastic under-rail pad (7) is continuously arranged along the laying direction of the rail and is located in the under-rail pad boot (6). The invention provides uniform and continuous support rigidity for the rail, improves the safety, stability and comfort of the train operation, reduces the waveform wear on the rail surface caused by the wheel-rail stage, and satisfies the development requirement of the ballastless track.

Description

technical field [0001] The invention belongs to the technical field of ballastless track, and mainly relates to a ballastless track vibration damping structure with uniform and continuous rigidity. Background technique [0002] In recent years, my country is vigorously building high-speed railways, passenger dedicated lines and urban rail transit, all of which are laid with ballastless tracks. At present, there are various types of ballastless track structures, and track dampers arranged at intervals are used for vibration reduction. Depending on the stiffness of the track damper, the damping effect after installation is also quite different. However, since the track damper cannot be continuously paved under the track, the vertical stiffness of the track is not uniform. When a train passes by, periodic changes in stiffness will cause periodic changes in wheel-rail contact and force, resulting in waveform wear on the surface of the track, which will undoubtedly affect the s...

AI Technical Summary

Problems solved by technology

However, since the track damper cannot be continuously paved under the track, the vertical stiffness of the track is not uniform

When a train passes by, periodic changes in stiffness will cause periodic changes in wheel-rail contact and force, resulting in waveform wear on the surface of the track, which will undoubtedly affect the safety, stability, comfort and use of the track structure. Serious impact on life expectancy

At the same time, the waveform wear will also increase the noise and vibration generated by the wheel-rail contact, causing noise pollution to the surrounding environment

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