Vibration and noise comprehensive control system for rail traffic

Abstract

The invention discloses a vibration and noise comprehensive control system for rail traffic. The system comprises a rail base, a floating plate, a non-linear vibration isolator, a rail, a periodicityvibration absorber and steel rail vibration noise inhibition devices. The floating plate is arranged above the rail base, the non-linear vibration isolator is placed on the floating plate, and the steel rail vibration noise inhibition devices are arranged on the surface of the waist portions of the two sides of the rail. The vibration and noise comprehensive control system for rail traffic is composed of the floating plate, the non-linear vibration isolator, the rail, the periodicity vibration absorber and the steel rail vibration noise inhibition devices, vibration reduction is conducted firstly, then noise reduction is conducted, the non-linear vibration isolator and the periodicity vibration absorber are adopted for vibration reduction and the noise reduction, the aims of controlling environment vibration and lowering plate sound radiation of the floating plate are achieved, control over the noise of a wheeltrack can be achieved, the noise in a train is inhibited, and accordingly the vibration and noise cooperation control effect is achieved.

Description

Technical field [0001] The invention relates to the technical field of urban rail transit, in particular to a rail transit vibration and noise integrated control system. Background technique [0002] Urban rail transit plays a key role in improving residents' travel quality, improving urban ecological environment, promoting urban economic development and optimizing urban spatial layout. However, at the same time, as the urban rail transit network continues to be encrypted, train speeds continue to increase, and the operating life of the lines continues to increase, the negative problems of vibration and noise induced by this have become more and more serious, attracting more and more people’s attention internationally. Vibration and noise have become one of the seven major environmental hazards. Its negative effects may be reflected in: First, it interferes with people's normal life. For example, in the Beijing Sihui Metro Depot, the indoor vibration and secondary noise induced...

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Problems solved by technology

For example, in the Beijing Sihui subway depot, the indoor vibration and secondary noise of the superstructure induced by train operation seriously affect the normal life of indoor personnel; second, it affects the normal use of precision equipment. In order to solve this negative impact, the industry has developed a large number of different levels However, there are different levels of track vibration reduction measures on the market, such as vibration reduction fasteners, trapezoidal sleepers, ballast bed vibration damping pads or steel spring floating plates, etc., which can reduce environmental vibration, but will also cause wheel vibration. Rail noise increases significantly, and the increased noise is transmitted to the interior of the car body, affecting the ride comfort of drivers and passengers. Existing technical measures such as sound-absorbing panels, damping rails, rail dynamic vibration absorbers, or damping rails can suppress wheel-rail noise. However, the ambient vibration cannot be reduced

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