CN201339164Y

CN201339164Y - Novel road sound barrier

Info

Publication number: CN201339164Y
Application number: CNU2009200988491U
Authority: CN
Inventors: 焦映厚; 李英杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-01-08
Filing date: 2009-01-08
Publication date: 2009-11-04
Anticipated expiration: 2019-01-08

Abstract

The utility model relates to a novel road sound barrier. Both lateral ends of a first laminate, a second laminate and a third laminate are fixed on an upright post; a clearance is left between the first laminate and the second laminate to form a hollow cavity; sound absorbing holes are evenly distributed on the surfaces of the first laminate and the second laminate; sound absorbing material is filled between the second laminate and the third laminate; a sound barrier top structure with a diamond section, formed by a first perforated plate, a second perforated plate and a third perforated plate, is fixed at the top parts of the first laminate, the second laminate, the third laminate and the upright post; a clearance is left between the first perforated plate and the second perforated plate to form a hollow tapered cavity; and sound absorbing material is filled between the second perforated plate and the third perforated plate. The road sound barrier is compact in structure, reasonable in design and low in cost and is easy to install. The road sound barrier enables the noise to have big diffracted sound energy attenuation when passing around the top of the barrier, and the resonant cavities and the sound absorbing structures provided by the barrier can better absorb the noise effectively.

Description

The new road sound barrier

Technical field

The utility model relates to the novel noise barrier structure of a kind of road.

Background technology

At present, cut off the noise of propagating in the air with material, member or structure, thereby obtain quietly environment, be called sound insulation, the minimizing process of sound wave acoustic energy by medium or when inciding on the medium interface becomes sound absorption.Sound insulation and sound absorption are one of effective measures in the noise control.Sound barrier is used to stop the noise source sonic propagation of going directly, sound absorption that is provided with and sound arrester exactly between noise source and recipient.Common sound barrier mainly is made up of bottom body construction and apex structure at present, and employed material is poly (methyl methacrylate) plate substantially, adopts the middle standing pillar structure to connect.When sound barrier was very long, sound insulation and acoustically effective depended primarily on the attenuation of the diffraction acoustic energy of walking around the sound barrier top.Common apex structure has circular arc and contrary L type, these two kinds simple in structure, easy realizations, and general top structure does not all have sound absorption material and structure.But sound insulation and acoustically effective are obvious inadequately, under the prerequisite that does not increase the sound barrier height, often need more efficiently that apex structure reaches better noise reduction, especially to the noise reduction of low-frequency noise.

Summary of the invention

The purpose of this utility model is to overcome the weak point that exists in the above-mentioned technology, and a kind of compact conformation, reasonable in design is provided, and the new road sound barrier of excellent noise reduction effect easily is installed.

In order to achieve the above object, the technical solution adopted in the utility model is: first laminate, second laminate, the three ply board two side ends is fixed on the column, first laminate, leave distance between second laminate and form cavity body, first laminate, second laminate, uniform sound absorption hole on the three ply board plate face, second laminate, be filled with sound absorption material between the three ply board, first laminate, second laminate, three ply board and column top are fixing by the first floor perforated plate, second layer perforated plate, it is rhombus sound barrier apex structure that the 3rd layer of perforated plate constitutes the cross section, leave the gap between first floor perforated plate and the second layer perforated plate and form the cavity-like cone-shaped cavity, between second layer perforated plate and the 3rd layer of perforated plate sound absorption material is housed.

The utility model has the advantages that:

Compact conformation, reasonable in design, easily install, with low cost, this structure not only can make noise produce very big diffraction acoustic energy decay when walking around the top, the resonant cavity that provides of this structure itself and sound absorption construction absorption of noise more effectively significantly reduces the diffraction acoustic energy by apex structure simultaneously.After this noise barrier structure was set, its sound shadow zone increased greatly than the noise reduction of conventional acoustic barrier.After the utility model is provided with novel sound barrier, can reduce the influence of noise to the road both sides to greatest extent, apex structure can improve the noise reduction of sound barrier under the prerequisite that does not increase the sound barrier height simultaneously.Because surface structure and uncomplicated can satisfy the requirement that wind resistance carries, the drain hole by the bottom can solve the problem of accumulating rainwater, prolongs physical life.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the A-A sectional view of Fig. 1;

Fig. 3 is the vertical view of Fig. 1.

The specific embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.

By Fig. 1-Fig. 3 as can be known, the utility model is at first laminate 1, second laminate 2, three ply board 3 two side ends are fixed on the column 4, first laminate 1, leave distance between second laminate 2 and form cavity body 11, first laminate 1, second laminate 2, uniform sound absorption hole 5 on the three ply board 3 plate faces, second laminate 2, be filled with sound absorption material 6 between the three ply board 3, first laminate 1, second laminate 2, three ply board 3 and column 4 tops are fixing by first floor perforated plate 7, second layer perforated plate 8, it is rhombus sound barrier apex structure that the 3rd layer of perforated plate 9 constitutes the cross section, leave the gap between first floor perforated plate 7 and the second layer perforated plate 8 and form the cavity-like cone-shaped cavity, between second layer perforated plate 8 and the 3rd layer of perforated plate 9 sound absorption material 10 is housed.

Body construction is made up of four layers of steel plate, first, second, third laminate is a perforated plate, the second layer and the 3rd layer of middle sound absorption material that adds, produce resonant cavity-absorbent treatment-structure of resonant cavity thus, cavity between the first floor and the second layer mainly is in order to absorb low-frequency noise, if remedied the shortcoming of sound absorption material to the low-frequency noise absorptive capacity, cavity between the 3rd layer and the 4th layer mainly is in order to form resonant cavity, simultaneously under the prerequisite that does not reduce acoustically effective, save sound absorption material, reduce cost.Resonant cavity makes by noise and produce resonance in the chamber, can reduce the energy of low-frequency noise preferably.And high-frequency noise causes the vibration of material internal when the sound absorption material, make it and air between the frictional heat portion of energy that consumes high-frequency noise.Have major part like this when noise process sound barrier and be absorbed, the acoustic energy of reflection can significantly reduce.The utility model adopts three layers of rhombus perforated plate nested structure on the top, make and form a plurality of resonant cavities between the perforated plate, simultaneously between second layer perforated plate and the 3rd layer of perforated plate, add sound absorption material, resonant cavity makes and produces resonance by noise in the chamber and can reduce the energy of low-frequency noise preferably, and high-frequency noise makes it by the vibration that causes material internal by sound absorption material the time and air between frictional heat consume the energy of high-frequency noise.Noise makes the energy of its low-frequency range and high band that very big consumption all be arranged, thereby reaches the purpose of noise reduction when walking around the top of sound barrier like this.Because the utility model adopts diamond structure on the top, belong to symmetrical structure with respect to center line, therefore in fact be equivalent to form the combining structure of three resonant cavities and two sound-absorbing material layers, thereby utilize less space to realize the effect of multilayer sound absorption on the top.

Install on the ground at H shaped steel column, the body construction plate is inserted in the middle of the column, can go out different height and length by increasing column with the number combinations of entity plate as required.Body construction is made up of four layers of steel plate, first, second and third layer steel plate is perforated plate, the 4th layer is general steel plate, in the middle of second laminate and three ply board, insert sound absorption material, walk around sound barrier in order to prevent noise by the slit, bottom, the bottom baffle plate is placed in body and contact position, ground in least significant end, and the bottom baffle plate is linked to each other with entity plate by rivet.

Base plate two ends, the utility model top are installed on the H shaped steel column, the employing holding screw is fixed, on the base plate of top, increase square hole, help in time draining the water away, minimizing rainfall greatly is to the influence in apex structure life-span, and interior perforated plate is fixed on the base plate, and intermediate perforated plate is enclosed within the outside of base plate and interior perforated plate, at the interlayer place of interior perforated plate and intermediate perforated plate filling sucting sound material, interior perforated plate forms a cavity with respect to center line self.Outer perforated plate is enclosed within the intermediate perforated plate outside, forms a cavity in glass surface layer outside.When sound passed through apex structure, its path of passing through was: cavity-sound-absorbing material layer-cavity-sound-absorbing material layer-cavity like this.Voice signal with some diffraction sound and transmission when sound passes through the sound barrier top produces the interference counteracting, thereby the noise reduction of sound barrier is greatly improved.

Claims

1. new road sound barrier, comprise column, it is characterized in that: first laminate (1), second laminate (2), three ply board (3) two side ends is fixed on the column (4), first laminate (1), leave distance between second laminate (2) and form cavity body (11), first laminate (1), second laminate (2), uniform sound absorption hole (5) on three ply board (3) the plate face, second laminate (2), be filled with sound absorption material (6) between the three ply board (3), first laminate (1), second laminate (2), three ply board (3) and column (4) top are fixing by first floor perforated plate (7), second layer perforated plate (8), it is rhombus sound barrier apex structure that the 3rd layer of perforated plate (9) constitutes the cross section, leave the gap between first floor perforated plate (7) and the second layer perforated plate (8) and form the cavity-like cone-shaped cavity, between second layer perforated plate (8) and the 3rd layer of perforated plate (9) sound absorption material (10) is housed.