Traffic noise prevention and control sound barrier structure based on bionics principle

A traffic noise and bionic technology, applied in noise absorbing devices, buildings, etc., can solve the problems of poor durability, poor noise reduction effect, narrow application range, etc., to increase the surface roughness, beautiful appearance and improve performance. Effect

Active Publication Date: 2020-08-07
SHANGHAI UNIV OF ENG SCI
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  • Abstract
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Problems solved by technology

[0010] The purpose of the present invention is to overcome the defects of poor noise reduction effect, poor durability and narrow application range in the prior art, and provide a sound barrier with low cost, good noise reduction effect, wide application range and good durability

Method used

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  • Traffic noise prevention and control sound barrier structure based on bionics principle
  • Traffic noise prevention and control sound barrier structure based on bionics principle
  • Traffic noise prevention and control sound barrier structure based on bionics principle

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Embodiment Construction

[0054] The specific implementation manners of the present invention will be further elaborated below in conjunction with the accompanying drawings.

[0055] A sound barrier structure for traffic noise prevention and control based on the principle of bionics, such as Figure 1~3 As shown, it includes sound insulation layer I a, damping layer b and sound insulation layer II c stacked in sequence;

[0056] The sound insulation layer Ia is divided into arc-shaped edge area 1, hole-shaped sound-absorbing area 2, and noise-absorbing louver area 4 from top to bottom, and the projection of arc-shaped edge area 1, hole-shaped sound-absorbing area 2, and sound-absorbing louver area 4 All are square, and its integral structure, the thickness of sound insulation layer 1 a is 70mm, and concrete material is the cement-based sound-absorbing material that takes perlite as the sound-absorbing aggregate;

[0057] Among them, the arc-shaped edge area 1 and the hole-shaped sound-absorbing area 2...

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Abstract

The invention discloses a traffic noise prevention and treatment sound barrier structure based on a bionics principle. The traffic noise prevention and treatment sound barrier structure comprises a sound insulation layer I, a damping layer and a sound insulation layer II, the sound insulation layer I is sequentially divided into an arc-shaped edge area, a hole-shaped sound absorption area and a silencing shutter area from top to bottom; the arc-shaped edge area and the hole-shaped sound absorption area are connected to form an arc-shaped plate-shaped structure which is bent towards the direction far away from the sound insulation layer II, and the silencing shutter area is of a flat plate-shaped structure; the edge, away from the hole-shaped sound absorption area, of the arc-shaped edge area is in a streamline wavy shape. A plurality of blind hole structures with different sizes are formed in the porous sound absorption area; louver structures are installed on the sides, away from thesound insulation layer II, of the silencing louver areas, and louvers, close to the hole-shaped sound absorption areas, of the louver structures are distributed in a wavy mode. The traffic noise prevention and control sound barrier structure based on the bionics principle is reasonable in structural design, simple in overall structure, low in cost and outstanding in noise reduction effect and hasgreat application prospects.

Description

technical field [0001] The invention belongs to the technical field of noise reduction and sound insulation, and relates to a traffic noise prevention and control sound barrier structure based on the principle of bionics. Background technique [0002] The sound insulation wall is mainly used for sound insulation and noise reduction of expressways, elevated compound roads and other noise sources. Sound barrier. It is mainly by inserting a facility between the sound source and the receiver, so that the sound wave propagation has a significant additional attenuation, thereby reducing the impact of noise in a certain area where the receiver is located. [0003] When sound waves encounter a sound barrier during propagation, three phenomena will occur: reflection, transmission and diffraction. Usually the barrier can prevent the transmission of direct sound and attenuate the transmitted sound sufficiently, while the influence of transmitted sound can be ignored. Therefore, the ...

Claims

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Application Information

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IPC IPC(8): E01F8/00
CPCE01F8/0023E01F8/0029E01F8/0041
Inventor 文永蓬董昊亮周月吴俊汉
Owner SHANGHAI UNIV OF ENG SCI
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