Elastic damping type railway metal sound barrier and combination device thereof

Abstract

The invention relates to an elastic damping type railway metal sound barrier and a combination device thereof, and belongs to the vibration and noise treatment field in the field of environmental protection. The metal sound barrier comprises a sound barrier unit plate mainly composed of an enhancement type panel, elastic structures, a sound absorption material layer, a backboard and an aluminum alloy frame, the unit plate comprises the enhancement type panel, the elastic structures, the sound absorption material layer and the backboard from the front face to the back face, the panel, the sound absorption material layer and the backboard are installed in a slot position of the aluminum alloy frame in an inserted mode, spigot and socket grooves of the elastic structures are formed in the portions, between the panel and the sound absorption material layer and between the sound absorption material layer and the backboard, of the aluminum alloy frame, and the elastic structures are installed in the spigot and socket grooves in an inserted mode. The elastic structures are higher in noise reduction effect, by means of the design method, the impact load borne by the sound barrier structure is lightened and is gentle, the anti-fatigue life of the structure is greatly prolonged, the operation characteristic of the high speed railway is especially adapted, and the passive treatment mode that an existing high-speed rail sound barrier system resists the pulse load by improving the structural stiffness is completely changed.

Description

technical field [0001] The invention relates to a novel railway metal sound barrier and its combination device, in particular to an elastic damping type railway metal sound barrier and its combination device, which is suitable for railways of various speed levels, especially for high-speed railways. The elastic damping railway metal sound barrier utilizes the damping characteristics of elastic materials to dissipate energy, improves the anti-pulsation load capacity and structural safety of the railway sound barrier, and belongs to the field of vibration and noise control in the field of environmental protection. Background technique [0002] The high-speed railway runs fast, and the sound barrier is relatively close to the center of the line (especially on bridges), and the surface of the sound barrier is subjected to a large train aerodynamic load; under the condition of a train speed of 350km / h, the pulsating load of the train wind on the sound barrier is nearly 1000Pa (ac...

AI Technical Summary

Problems solved by technology

Conventional sound barriers cannot attenuate the train aerodynamic load acting on its surface, and huge aerodynamic loads can cause the sound barrier to sway and shake

After long-term operation, the connection is prone to loosening, and even the structure is damaged and falls off, which poses a threat to driving safety

[0003] The design mechanism of my country's current high-speed rail sound barriers is to increase the structural rigidity to adapt to high loads and increase the natural frequency of the unit plate to avoid resonance; however, due to the uncontrollable quality of production and installation, there are potential safety hazards. Technically a new design, using elastic damping technology to improve the anti-pulsation load capacity and structural safety of railway sound barriers

Images