KR101251957B1 - A noise decrease block and soundproofing walls using it - Google Patents

Abstract

The present invention relates to a noise damping block for a sound barrier and a sound barrier composed of the same, which are fixed to an upper side of a sound barrier installed on a road structure to reduce diffraction noise passing through the sound barrier through sound absorption and offset interference.
The damping block body is formed vertically long and the center wall 510 is formed with a coupling groove 502 at the lower end; A downward side wall 520 formed to be symmetrically downwardly inclined in both directions from an upper end portion 501 of the center wall 510 and having a plurality of through holes 503; Upward side walls 531 and 532 formed to be inclined upward in both directions from a lower end of the center wall 510 and connected to the downward side walls 520 and having a plurality of through holes 503; A plurality of first inner walls 540 each of which has one end connected to the upward side walls 531 and 532 and the other end connected to the downward side wall 520 and formed at regular intervals to form a plurality of connection passages 560; And a fixing plate 570 on which the downward side wall 520, the upward side wall 531, 532, the first inner wall 540, and the center wall 510 are fixed to one surface thereof.

Description

Noise reduction block and soundproofing walls using it

The present invention relates to a noise damping block for soundproof walls and a soundproof wall composed of the same, and more particularly, fixed to the top of a soundproof wall installed on a road structure to reduce diffraction noise passing through the soundproof wall through sound absorption and offset interference. It relates to a noise damping block for sound barriers and a sound barrier consisting of them.

As traffic volume increases, noise levels generally increase in the surrounding area. According to a recent noise survey conducted in a foreign country, the noise level is increasing at a rate close to 1 dB every year, and the main cause of this increase is the increase in traffic volume. Therefore, even in Korea, where traffic volume is rapidly increasing, traffic noise should be considered as a major environmental parameter of new town construction or new roads. It is also necessary to actively take measures to reduce traffic noise in existing roadside areas.

In general, the sound barrier is installed at a place around a highway or a railroad and a dense house or a place to prevent noise from being transmitted to the surroundings to block and reduce noise transmitted from the outside. Accordingly, in order to reduce noise generated by vehicles, etc., in the vicinity of dense residential neighborhoods or schools, sound barriers have been installed on the noise transmission paths along the roads, and the performance of the sound barriers is mainly measured in the laboratory. It is evaluated by and is a reflection soundproof wall that reflects noise and blocks and extinguish it from being transmitted to the outside of the soundproof wall, or a sound interference wall that extinguishes by interference between the soundproof soundproof wall that absorbs and extinguishes the noise by itself and the noise. There are various types of sound barriers, including dragon sound barriers.

As a result, the reflective noise barrier, the sound-absorbing sound barrier, the interference sound barrier, and the resonance sound barrier are selectively used according to how the traffic noise is generated, propagated and influenced to reduce the traffic noise.

However, such a conventional road sound barrier should be prevented from being transmitted to the residential area by blocking and absorbing the noise generated by the highway and the railroad when the building of the residential area is high or the highway and railway are wide. To this end, the height of the soundproof wall must be formed high so that sound waves caused by the generated noise are not transmitted to the outside of the soundproof wall, so that the installation work of the soundproof wall is difficult as well as the work efficiency is lowered, and the height of the soundproof wall is installed. There was a problem that the production cost of the rise.

In this case, a noise reducer may be installed to prevent the noise generated from the road side from being transmitted to the residential area. However, when the noise reducer is installed, there is no interference function to reduce the height of the noise barrier. It is impossible to do. In other words, in order to achieve such a high noise reduction effect, the soundproof wall must be installed high. In this case, the height of the soundproof wall is increased, resulting in economical consumption. Furthermore, psychological anxiety is felt by residents or passengers using vehicles. It causes a lot of problems, such as causing or violating the right of view.

In addition, when the soundproof wall is installed in a structure that is affected by its own weight, such as a bridge, it should be installed as low as possible to reduce its own load in order to secure the structural stability of the bridge and to ensure the stability of the strut and lower foundation structure. In this case, residents living in high-rise apartments in the surrounding area are constantly making complaints due to vehicle noise.

The upper end of the soundproof wall installed in the field is the dominant that the sound propagated diffraction occurs. Accordingly, in order to block and reduce noise propagated to the upper end of the soundproof wall, a separate noise interference device is attached to the upper part of the soundproof wall.

As a result, the noise generated on the highway and the railroad is blocked by the soundproof wall and at the same time, the noise is intercepted by the noise interference device of the soundproof wall, thereby preventing the noise from being transmitted to the outside of the soundproof wall.

An example of a noise interfering device for a soundproof wall is disclosed in Korean Utility Model Registration No. 0376899, which is shown in FIGS. 1 and 2.

The noise barrier for the sound barrier is formed with multi-stage rounding bends 120 and 130 in upper and lower directions in both directions, centering on the intermediate ridge 110, and the width is gradually downward from both lower ends of the rounding bends. A support plate 100 formed to form a rounding part 140 that is reduced to;

It is provided on one surface of the support plate 100 and the interference path 220 is formed therebetween, each having a rounding angle of upward and downward on the left and right sides about the middle line of one surface of the support plate 100 is symmetrically coupled A plurality of noise interference ribs 200 configured to form a plurality of rounded interference paths 220 communicating in an upper and left direction;

A support bracket 300 for continuously and repeatedly coupling the support plate 100 and the noise interference ribs 200 along the longitudinal direction to the top of the soundproof wall;

The noise interference ribs 200 have a predetermined horizontal section 230 formed at an intermediate portion thereof, and the deployment ribs 240 for inducing noise interference and reflection at both ends of the horizontal section 230 are upward or downward. It has a structure made to protrude a predetermined width in at least one of the direction.

Such a noise interferor is effective in reducing the height of the soundproof wall by interfering and dissipating noise from the noise source at the upper end of the soundproof wall, but the vehicle noise of the road is reflected through the rounding unit 140. There is a problem that the noise is transmitted to the surrounding high-rise buildings because it is turned upward.

In addition, the noise entrances and exits of the interference passage 220 are directed upwards, so that the vehicle noises on the ground enter and exit, which is inappropriate in structure.

Korea Utility Model Registration No. 0376899

The present invention has been made to solve the above problems, there is a technical problem to provide a sound damping block for sound barriers and sound barriers composed of them so as to attenuate the noise of the road more effectively than narae technology.

In the present invention to achieve the above object is provided in the upper end of the soundproof wall noise damping block body for damping the noise of the road,

A center wall formed vertically long and having a coupling groove formed at a lower end thereof;

A downward side wall symmetrically downwardly inclined in both directions from an upper end portion of the center wall and having a plurality of through holes;

An upward side wall symmetrically upwardly inclined in both directions from a lower end of the center wall and connected to the downward side wall and having a plurality of through holes;

A plurality of first inner walls, one end of which is connected to the upward side wall and the other end of which is connected to the downward side wall and formed at a predetermined interval to form a plurality of connection passages;

A fixed plate fixed to one side of each of the lower side walls, the upper side walls, the first inner wall, and the lower end of the central wall in one body;

A plurality of protruding walls are formed on the plurality of first inner walls, and the connection passage is configured to face toward the downward side wall by changing the direction from the upward side wall toward the center wall side.

In addition, the present invention is characterized in that the block body further comprises a plurality of second inner walls, one end of which is connected to the center wall and the other end of which is connected to the downward side wall.

In addition, the block body of the present invention is characterized in that the other side of the fixing plate is formed with a coupling groove that is coupled to the upper end of the lower side wall, the upper side wall, the first inner wall, the second inner wall and the center wall of the other damping block.

In addition, the connection passage is characterized in that the sound absorbing material is filled.

On the other hand, the soundproof wall of the present invention to achieve the above object is characterized in that the noise damping blocks are made up and down stacked.

First, a connection passage 560 is formed from the upward side wall 532 toward the center wall 510 and the direction is changed to face the downward side wall 520, and the plurality of protruding walls 541 on the first inner wall 540. ), The noise enters the through hole 503 of the upward side wall 532 and then collides with the protruding walls 541, effectively attenuating the noise by diffraction and interference.

Second, the downward side wall 520, the upward side wall 531, 532, the first inner wall 540, the second inner wall 550 and the center wall of the other damping block on the other surface of the fixed plate 570 of one damping block. Coupling groove 571 is formed to be coupled to the upper end of the 510, so that the installation position can be easily maintained when the plurality of damping block bodies 500 in contact with the upper end of the soundproof panel 20 to be installed in a line. Make it easy.

Third, the sound absorbing material 600 is filled between the second partition walls 550 and the connection passage 560 to more effectively attenuate the noise introduced through the through hole 503.

Fourth, by forming a plurality of second inner walls 550, one end of which is connected to the center wall 510 and the other end of which is connected to the downward side wall 520, the noise passing over the upper surface of the damping block is passed down the side wall 520. By passing through the through hole 503 to be extinguished, to minimize the transmission of noise to the other side of the soundproof wall.

Fifth, the soundproof wall to which the pillars 10 are installed at a predetermined interval on the concrete structure 30 and the damping block bodies 500 assembled in a row between the pillars 10 are stacked and coupled is installed at the center of the road. Noise generated in the sections A and B can be extinguished through diffraction and interference in each section.

1 and 2 is a schematic diagram showing a conventional noise attenuator,
3 is a front view showing a road soundproofing wall in which the noise damping block of the embodiment of the present invention is installed;
4 is a cross-sectional view taken along line 3 of FIG.
5 is a perspective view of the damping block body;
6 is a rear perspective view of FIG. 5;
Fig. 7 is a front view of Fig. 5,
8 is a front view of a state in which a sound absorbing material is filled in a portion of FIG. 5;
9 is a cross-sectional view of a road sound barrier composed of a damping block body;
10 and 12 are reference views of FIG. 5,
11 and 13 are reference views of FIG. 6.

The noise damping block of the embodiment of the present invention is installed at the upper end of the sound barrier to effectively attenuate the vehicle noises on the road, so that the height of the sound barrier can be lowered than before. It is installed at the center of the road and effectively attenuates noise on both sides of the road.

3 and 4 showing the soundproof wall in which the damping block of the present invention is installed, the pillars 10 are erected at regular intervals on top of the concrete structure 30 and the soundproof plates 20 are disposed between the pillars 10. It is installed and has a structure in which the noise damping block 500 of the embodiment of the present invention is installed at the top end of the soundproof plate (20).

5 to 7, 10 to 13, the damping block 500 is formed vertically long and the center wall 510 is formed with a coupling groove 502 at the lower end; A downward side wall 520 which is formed to be symmetrically downwardly inclined in both directions from an upper end portion 501 of the center wall 510 and has a plurality of through holes 503; Upper side walls 531 and 532 formed to be inclined upward in both directions from a lower end of the center wall 510 and connected to the downward side walls 520 and having a plurality of through holes 503; A plurality of first inner walls 540 each having one end connected to the upward side walls 531 and 532 and the other end connected to the downward side wall 520 and formed at regular intervals to form a plurality of connection passages 560; ; The lower side wall 520, the upper side wall 531, 532, the first inner wall 540 and the lower end of each of the center wall 510 is fixed plate 570 integrally fixed to one surface; is provided.

The connecting passage 560 is configured to face the downward side wall 520 by changing direction from the upward side wall 532 toward the center wall 510 side, and each of the first inner wall 540 has a plurality of structures. The protruding wall 541 is formed so that the noise enters the through hole 503 of the upstream side wall 532 and then collides with the protruding walls 541 so that the noise is attenuated by diffraction and interference.

In addition, a plurality of second inner walls 550, one end of which is connected to the center wall 510 and the other end of which is connected to the downward side wall 520, is introduced through the through hole 503 of the downward side wall 520. The noises are caused to disappear by diffraction.

The sound absorbing material 600 is filled between the second partitions 550 and the connection passage 560 to more effectively attenuate the introduced noise.

Meanwhile, as shown in FIGS. 6, 11, and 13, the other side of the fixing plate 570 includes a down side wall 520, an up side wall 531, 532, a first inner wall 540, and a first side wall of another damping block. 2 is formed with a coupling groove 571 is coupled to the upper end of the inner wall 550 and the center wall 510, a plurality of damping block 500 to be installed in contact with the upper end of the soundproof panel 20 as shown in FIG. When the assembly position can be maintained.

Reference numeral 590 denotes a fastening hole for mutually coupling the adjacent damping blocks 500 with long bolts.

On the other hand, Figure 9 shows a road soundproof wall consisting of damping blocks 500 of the embodiment of the present invention, which is installed in the concrete structure 30 at a predetermined interval between the pillars 10 between the pillars 10 The damping blocks 500 assembled in a row are stacked and coupled together.

Such a soundproof wall is installed at the center of the road so that noises generated at both road sections A and B are extinguished through diffraction and interference in each section.

That is, the noise generated in the section “A” is attenuated through the through hole 503, the connection passage 560, and the sound absorbing material 600 of each damping block 500, thereby blocking the noise in the section “B”. do.

10 ... pillars 30 ... concrete structures
500 attenuation block 510 center wall
520 ... downward walls 531, 532 ... upward sidewalls
540 ... inner wall 550 ... inner wall 2
600 ... sound absorbing material

Claims (5)

In the noise damping block for the sound barrier provided on the top of the sound barrier to attenuate the noise of the road,
A center wall 510 formed up and down and having a coupling groove 502 formed at a lower end thereof;
A downward side wall 520 which is formed to be symmetrically downwardly inclined in both directions from an upper end portion 501 of the center wall 510 and has a plurality of through holes 503;
Upper side walls 531 and 532 formed to be inclined upward in both directions from a lower end of the center wall 510 and connected to the downward side walls 520 and having a plurality of through holes 503;
A plurality of first inner walls 540 each having one end connected to the upward side walls 531 and 532 and the other end connected to the downward side wall 520 and formed at regular intervals to form a plurality of connection passages 560; ;
A fixing plate 570 in which lower ends of the lower side walls 520, the upper side walls 531, 532, the first inner wall 540, and the center wall 510 are fixed integrally to one surface thereof;
A plurality of protruding walls 541 are formed on the plurality of first inner walls 540, and the connection passage 560 is moved from the upward side wall 532 toward the center wall 510 and the direction is changed to the downward side wall. Noise damping block for the sound barrier, characterized in that formed to face (520). The noise damping block of claim 1, wherein a plurality of second inner walls 550, one end of which is connected to the center wall and the other end of which is connected to the downward side wall, is formed. 3. The lower side wall 520, the upper side wall 531, 532, the first inner wall 540, the second inner wall 550, and the center wall of the damping block are formed on the other surface of the fixing plate 570. Noise damping block for the sound barrier, characterized in that the coupling groove 571 is formed to be coupled to the upper end of the 510. The noise damping block for soundproof walls according to any one of claims 1 to 3, wherein a sound absorbing material is filled in the connection passage (560). Soundproof wall, characterized in that the noise damping blocks of claim 4 are stacked up and down.

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