Passive padiator railway metallic sound barrier system

Abstract

The invention develops a passive padiator railway metallic sound barrier system with a brand-new notion aimed at the disadvantages existing in a high-speed rail sound barrier system of our country. The passive padiator railway metallic sound barrier system with the brand-new notion is applied to the field of high speed railway, interurban railway, passenger transport line, rail transit and the like, and belongs to the technical field of vibration and noise treatment in the environmental protection field. The passive padiator railway metallic sound barrier system with the brand-new notion comprises a passive padiator type metallic sound barrier unit plate shell, a unit plate sound absorption component, a damping device used for installation and a sound barrier biased steel vertical column, wherein the passive padiator type metallic sound barrier unit plate shell is arranged on the sound barrier biased steel vertical column. According to the passive padiator railway metallic sound barrier system, multiple damping are utilized to dissipate energy, transmission of pulsating loads is effectively weakened, the loads transmitted by the pulsating force to the sound barrier shell and the steel vertical column are reduced, the integral rigidity of a sound absorption material is improved, the occurrence of collapse of a sound absorption system is completely eradicated, the weight of a sound barrier plate body is reduced, the loads are reduced, the low frequency acoustical absorption coefficient is increased, thus the service life of safety operation of the sound barrier system is prolonged, and the examination and maintenance in the operation are improved.

Description

technical field [0001] The invention relates to a damping railway metal sound barrier system composed of a damping sound barrier unit plate shell, a unit plate sound-absorbing component, a damping device for installation and an offset H-shaped steel column, which belongs to the field of vibration and environmental protection. Noise control technology field. Background technique [0002] In recent years, my country has built a large number of high-speed railways and put them into operation. In order to solve the noise pollution caused by the operation of high-speed railways, a large number of sound barrier systems have been applied. [0003] At present, the high-speed iron metal sound barriers put into use in my country use metal unit plates with thin-shell fastening structure, which has poor structural rigidity. It will lose its efficacy, so that the metal plate body directly bears the pulsating load, which is easy to cause structural fatigue damage; the sound-absorbing cott...

AI Technical Summary

Problems solved by technology

[0003] At present, the high-speed iron metal sound barriers put into use in my country use metal unit plates with thin-shell fastening structure, which has poor structural rigidity. It will lose its efficacy, make the metal plate body directly bear the pulsating load, and easily cause structural fatigue damage; the interior uses cement boards to support the sound-absorbing cotton as its sound-absorbing system, and many problems occur in actual use. Inside the sound barrier in operation, the cement board There is a high proportion of cracking and rock wool collapse, which is accompanied by the failure of the sound barrier, which leads to the loss of the sound absorption function of the sound barrier

The H-shaped steel column for installation is designed with symmetrical bolts. After the panel is installed, the bolts on the outside cannot be inspected and maintained, which brings great safety risks.

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