KR20040082460A - Net and board for shading light and absorbing sound - Google Patents

Abstract

PURPOSE: A shading net having the function of a soundproofed wall is provided to reduce the wind load by making the movement of air smooth when vehicles drive, to cut off the headlights of an opposite lane and to reduce the traveling noise of vehicles on a road. CONSTITUTION: The shading net having the function of a soundproofed wall comprises the steps of installing a sound-insulating plate in an outer case composed of a perforated plate case provided with many sound-absorbing openings, and installing a shading net(10) composed of a sound-absorbing member between the sound-insulating plate and the perforated plate case. A shading plate(20) is composed of many shading nets(10) having the function of a soundproofed wall and the lateral section of the shading net or the shading plate is formed at an angle of 30¯60 degrees.

Description

Shading net and shading plate with soundproof wall function {Net and board for shading light and absorbing sound}

The present invention is installed in a central separator of a highway or a high-speed road in a light shielding network having a soundproof wall function to block driving noise of a car generated on the road as well as a light shielding function to block a headlight of a car running in an opposite lane. It is about.

In general, highways or high-speed roads are provided with a median of a concrete wall of a constant height to prevent the running car from crossing the center line. Shading nets (also known as anti-glare nets) are installed on top of these median dividers to prevent drivers from being blinded by the headlights of cars running in opposite lanes.

There are various types of such light shielding nets, but mainly a rectangular light shielding net having a specific shape of the light shielding net is simply installed at a predetermined interval at a predetermined interval, or a rectangular light shielding net having only a shading function vertically arranged at regular intervals. Fixed or fixed netting is used. However, the conventional shading nets merely perform an anti-glare function of shielding light and do not have any other function.

Therefore, the materials used in the conventional shading nets generally performed only the function of planks to block light.

On the other hand, in order to use the narrow country efficiently, it is common to build high-rise buildings around highways and high-speed roads. Therefore, in order to protect the residential and working environment of such roadside buildings, it is very urgent to reduce the running noise of cars generated on the road.

Of course, conventionally, sound barriers were installed at the edges of roads in order to block noises generated on highways or high-speed roads. However, it has been shown through experiments that the noise blocking effect of the soundproof wall, that is, the horizontal side soundproof wall installed at the edge of the road, decreases rapidly as the width of the road increases and the structure of the roadside increases.

The reason is briefly described with reference to FIG. 2 as follows. Reference numeral 30 is a roadside sound barrier installed at the edge of the road. The soundproof wall 30 is generally sandwiched between a base part 32 made of a concrete structure and a frame (not shown) fixedly fixed to the base part 32 at a predetermined interval and continuous with a predetermined section up, down, left, and right. It consists of sound-absorbing panels that form a noise barrier. The sound absorbing panel is a sound absorbing material in the interior space formed by the front plate and the back plate is not formed through the sound absorbing holes (no sound absorbing holes).

The horizontal side soundproof wall 30 composed of the sound absorbing panel of this structure is inevitably limited in height. Because the horizontal soundproof wall 30 is completely blocked back and forth to enhance the sound insulation effect, if a strong wind blows in the direction perpendicular to the longitudinal direction of the soundproof wall, the wind does not escape at all, a strong wind load is applied to the soundproof wall, or the soundproof wall is broken. This is because there is a high possibility of falling.

Therefore, the roadside sound barrier 30, whose height is limited for the reasons described above, may exhibit excellent noise blocking effect when the width of the road is narrow or the building requiring sound insulation is low, but the width of the road becomes wider or soundproof is required. In the case of a high-rise building on the side of the road, noise generated in a car driving in the opposite lane is radiated onto the soundproof wall 30 as it is, so that the soundproofing effect is sharply reduced.

This phenomenon is remarkable as the road becomes wider and the buildings around the road become higher. For example, as shown in FIG. 3, when the maximum radiation angle of the noise generated in the vehicle 62 driving in the opposite lane is α, and the height of the soundproof wall 30 is h, the maximum radiation angle ( Although α) is constant, as the width w of the road becomes wider and the height y of the building 60 increases, the height H of the soundproof wall 30 required is higher than the height h of the existing soundproof wall. It becomes bigger. However, as described above, the height h of the transverse sound barrier 30 is limited to a certain height due to its structural characteristics, so that a difference h 'from the height H of the soundproof wall 30 is required. Therefore, there is a problem that can not block the noise.

One of the most preferable ways to solve this problem is to install a separate soundproof wall in the central separator (50). For example, as shown in Figure 3, if the height of the central partition soundproof wall 70 is installed on the center separator 50, the soundproof wall of height h 'is further installed on the existing horizontal soundproof wall (30). The effect is shown.

That is, by installing the soundproof wall 70 in the central separator, it is possible to easily solve the noise that could not be blocked by the structural limit that the height is limited to the existing horizontal side soundproof wall 30 at low cost. In other words, it has the same effect as installing a soundproof wall 70 having a relatively low height in the middle separator, and installing a soundproof wall 30 'having a higher height in both sides, and also installing both sides of the soundproof wall 70 only in the middle separator. The same effect as installing the soundproof wall 30 can be seen.

Therefore, for some of the above reasons, for example, the soundproof wall is installed not only on the road side but also on the central separator in the adjacent section of Itaewon and Pyeongchon section of the Seoul metropolitan area. However, if the soundproof wall is installed at the center of the separator, the surface through which sunlight or wind passes is much reduced than when the conventional soundproof wall 30 is installed on the horizontal side.

Therefore, there is a fear that freezing occurs on the road behind the soundproof wall where sunlight does not reach, causing traffic accidents. In addition, since the flow of air is not smooth when the vehicle moves, the air pressure is largely acted on the soundproof wall, and thus the soundproof wall may be damaged or conducted. In another problem, the sound barrier 70 may completely block the driver's or occupant's lateral view, and may cause feelings of stuffiness, discomfort, and psychological pressure.

In addition, the road width is reduced due to the installation of soundproof walls, difficulties in the excavation and reconstruction of existing roads, traffic accidents due to delays in the spread of smoke, obstruction of the driver's vision and increased psychological pressure, etc. May cause.

The present invention has been devised to solve these problems, and effectively solves the noise prevention problem that occurs as the width of the road widens and the roadside buildings become higher, and solves the freezing problem that occurs on the road behind the soundproof wall. It is intended to provide a light shielding network having a soundproof wall function that can withstand wind pressure and can secure a certain amount of lateral view.

In other words, the present invention relates to a soundproof wall for a median separator, and in particular, an object of the present invention is to provide a soundproof network for blocking noise that cannot be blocked by a conventional sidewall soundproof wall by installing the upper portion of the median separator 50.

It is still another object of the present invention to provide a new type of soundproofing net which solves the problems that occur when the conventional soundproof wall is installed as it is in the center separator.

1 is a front view of a light shielding plate having a soundproof wall function combined with a light shielding net having four L-shaped and inverted L-shaped sound barriers;

2 is an explanatory diagram for explaining the sound insulation effect of a conventional side-wall sound barrier.

Figure 3 is an explanatory diagram for showing the sound insulation effect of the light shielding network having a soundproof wall function on the center separation board according to the present invention

4 is a perspective view of a light shielding network having a soundproof wall function according to the present invention

5 is a side cross-sectional view of a light shielding network having a soundproof wall function according to the present invention.

Figure 6 is a side view of the light shielding network peripheral facility having a sound shielding wall function and the effect of the light shielding network having a soundproof wall function according to the present invention

7 is a plan view of a road provided with a light shielding net and a light shielding plate having a sound barrier function on a central separator;

8 is an explanatory diagram illustrating a noise path difference by a light shielding net having a soundproof wall function;

※ Explanation of symbols for main parts of drawing

10: shading net 11: outer case

12: sound absorbing hole 13: hole plate

14: sound insulation board 15: sound absorbing material

20: shading plate 30: soundproof wall

32: foundation 40: road

50: median 60: building (high rise APT)

62: cars

70: shading nets mounted on the median

It will be fully understood from the following detailed description that the light shielding network having the soundproof wall function according to the present invention is completely different from the conventional light shielding network or the soundproof wall.

The light shielding network having a soundproof wall function according to the present invention is installed on the upper part of the middle separator of the road, the case consisting of a perforated plate perforated with a plurality of sound absorbing holes on the front, back, side of the case, and the sound insulation plate in the middle of the inside of the case Insulated, between the sound insulating plate and the perforated plate case is composed of a light shielding network having a soundproof wall function consisting of sound-absorbing material, the light shielding network having the soundproof wall function constitutes a light shielding plate in a number of combinations, the side surface of the light shielding net or light shielding plate is 30 ° to It is cut diagonally at an angle of 60 ° and forms a parallelogram when viewed from the top of the center separator. It is installed on the top of the center separator to facilitate the movement of air during traffic. Blocks headlights while blocking road noise from cars Is achieved by chagwangmang combines the noise barrier function comprising.

Hereinafter, the configuration of the present invention will be described in detail with reference to the accompanying drawings.

4 is a perspective view illustrating a structure of a light shielding network having a soundproof wall function according to the present invention.

As shown in FIG. 4, the light shielding net having the soundproof wall function is formed of a perforated plate 13 having a plurality of sound absorbing holes perforated on the front, back, and side, and the outer case is made of aluminum alloy. It is made of iron, stainless steel, plastic, etc., but its shape may be different depending on the case, but in order to maximize the sound absorption effect, to prevent the headlights of the other side of the car and to smoothly move air, It is preferable that the long side is a plane, and both sides are a plane, but are obliquely cut at an angle θ of 30 ° to 60 ° when viewed from the top to form a parallelogram. The height (a + b) of the light shielding network having a soundproof wall function can be determined differently according to the height to be soundproofed, but it is preferable that the height of the driver and the rider is 50 cm to 70 cm to secure the vision of the driver and to give emotional stability. On the other hand, the sound absorbing hole 12 is shown as a circular through-hole, but in some cases it may be an elongated groove in the horizontal or vertical direction.

As shown in FIG. 7, the light shielding net having a soundproof wall function has an angle θ of 30 ° to 60 ° with the center separator when it is installed vertically on the center separator. The light shielding net 10 having the soundproof wall function may be formed of an L-shaped, I-shaped, and T-shaped, and constitutes the light-shielding plate 20 by a combination of the light-shielding nets. The light shielding plate is most preferably a combination of L-shaped and inverted L-shaped light shielding nets, and in some cases, a combination of I-shaped or T-shaped and inverted T-shaped shapes is provided. It can be achieved by combining about 4 to 6, the length (e) of the light shielding plate having a soundproof wall function through this combination is about 3m to 5m.

FIG. 1 exemplarily illustrates a light shielding plate 20 having a soundproof wall function formed by combining four light shielding nets 10 formed in an L shape. In this way, when a light shielding panel having a soundproof wall function is fabricated by combining L-shaped and reverse L-shaped, I-shaped, T-shaped and inverted T-shaped shielding nets, various shapes and patterns can be produced. Depending on the shape you choose can be installed.

The distance between the light shielding net or the light shielding plate having the sound barrier function configured by the above method is installed at a distance such that there is no space between the light shielding net or the light shielding plate having the sound barrier function when viewed from the front side perpendicular to the longitudinal direction of the central separator. do. In other words, the distance f between the light shielding net or the light shielding plate having a soundproof wall function is installed so as to be visible from a certain angle without being seen from the front. As can be seen from the experiment, when the light shielding net or the light shielding plate is disposed at an interval f of 10 cm to 20 cm, the same effect can be seen.

The installation of the light shielding net or the light shielding plate having the soundproof wall function at regular intervals minimizes the propagation of noise through the light shielding net or the light shielding plate and the possibility of passing the headlights of the car, while passing the movement of the air and the headlights of the car. It is to maximize the gap that can be possible, and to secure the view of the driver and the rider by showing the foreground of the opposite lane according to the viewing direction.

Looking in detail with reference to Figure 5 showing a cross-sectional view of the light shielding net 10 having an internal structure of the light shielding wall 10, the outer case 11 of the light shielding net is a plurality of sound absorbing holes 12 only in the front, back, oblique side It is composed of a perforated plate case 13 which is perforated, the sound shielding plate having a soundproof wall function consisting of a sound absorbing material (15) between the sound insulation plate and the hole plate case, the sound insulation plate 14 is installed in the middle of the inside of the case. It consists of.

Looking at the above configuration in more detail, the vehicle noise generated in the up and down lane is absorbed through the sound absorbing holes perforated on the front, back, side, and the absorbed sound energy reaches the sound absorbing material inside and is converted into thermal energy. In addition, the sound insulation plate installed in the center of the light shielding network having a soundproof wall function thoroughly blocks the propagation of sound energy in the opposite direction, thereby further improving the sound insulation function compared to the soundproof light shielding network composed only of sound absorbing materials. At this time, it is preferable that the sound insulation plate is made of aluminum, iron, stainless steel, plastic, and the like.

Hereinafter, the effect of the present invention will be described in detail with reference to FIG. 7. As shown in FIG. 7, the angle θ formed between the side and the center separator of the light shielding plate having a soundproof wall function and a combination thereof according to the present invention is 30 ° to 60 °, and between the light shielding net and the light shielding net or the light shielding plate and the light shielding plate. Since the distance (f) is 10 cm to 20 cm, oblique gaps exist between the light shielding nets, and the opposite lane is not visible when viewed from the front of the center separator at a right angle to the longitudinal direction, so that the lights of a car driving with a headlight at night A car running in the opposite lane has a shading effect that is not reflected.

On the other hand, noise generated in a driving vehicle is absorbed or reflected by the light shielding network having a soundproof wall function according to the present invention. In particular, since a sound insulation plate is installed inside the light shielding network having a soundproof wall function, noise absorbed by the light shielding network having a soundproof wall function is completely blocked and does not proceed to the opposite lane, so that the sound insulating effect is increased. In addition, the perforated plate case perforated with a sound absorber also constitutes the side of the light shielding net having a soundproof wall function, so that the noise that enters the gap between the light shielding nets can be thoroughly absorbed.

On the other hand, since the air can pass freely between the gap between the light shielding net or the light shielding plate having a soundproof wall function, there is an effect of being less affected by the strong wind. And since these effects are the same in the car driving in the opposite lane, it is possible to obtain the effect of installing two sound barriers as one sound barrier.

Hereinafter, the effect of reducing the noise value that reaches the sound absorbing point by propagating the noise generated from the vehicle driving the light shielding network having the soundproof wall function according to the present invention over the road center line and reaching the sound absorbing point by the soundproofing effect evaluation. Whether or not to be practical may be determined by evaluating the sound insulation effect.

That is, the noise attenuation can be interpreted similarly to the theory of noise attenuation in soundproof walls, and the characteristic is that a path difference occurs before and after installation of a light shielding network having a soundproof wall function.

First, as described in FIG. 8, the noise transmission path difference refers to the difference between the noise transmission path when there is a light shielding network having an obstacle, that is, a soundproof wall function installed on the center separation band, between the sound source and the sound receiving point, and is obtained from the following equation.

δ = SO + OR-SR

Where δ: path difference at the sound absorbing point R

S: sound source

O: Vertex of obstacle

R: Masturbation point

The following graph can be used to find the attenuation of noise.

The above equations are relational expressions for the path difference δ in order to easily calculate the correction value.

As described above, the light shielding network having a soundproof wall function according to the present invention is installed on the central separator of a highway or a high-speed road to perform an anti-glare function to block the headlights of a car, as well as to reflect and absorb the noise of a car to make noise. To perform the soundproof function to block the. In particular, since the light shielding net or the light shielding plate having a soundproof wall function according to the present invention has a predetermined distance from the adjacent ones, the internal pressure is minimized by easily moving the air, and the adaptation to the wind load of the strong wind is less affected by the strong wind. It is effective.

In addition to the effects described above, the light shielding network having a soundproof wall function according to the present invention can be manufactured in various shapes and patterns according to the surrounding environment, so the aesthetic effect is excellent, and a large amount of material can be obtained compared to the soundproof wall, so it is excellent in economic efficiency. In particular, it is possible to prevent the road width from being reduced by installing the soundproof wall at the center of the median, it is easy to install without the excavation of the existing road, it is possible to prevent the delay of the diffusion of the automatic smoke, and to obstruct the driver's view Psychological pressure can be reduced, and according to the above effects, traffic accidents can be reduced and pleasant road driving environment can be created.

Since the present invention described above has been described for exemplary embodiments only for illustrative purposes, those of ordinary skill in the art may implement various modifications and applications based on the present invention, it is the present invention It is intended that the present invention fall within the scope of the true spirit and spirit of the appended claims.

Claims (6)

As a light shielding net installed on the middle of the road, On the front, rear and side surfaces of the outer case 11, an outer case 11 consisting of a perforated plate case 13 having a plurality of sound absorbing holes 12 perforated, and a sound insulation plate 14 in the middle of the inner case , Between the sound insulation plate and the hole plate case is composed of a light shielding network 10 having a soundproof wall function consisting of a sound absorbing material 15, the light shielding network having the soundproof wall function constitutes the light shielding plate 20 in a number of combinations, the light shielding net or the light shielding plate The side cross section of the shading network having a soundproof wall function, characterized in that forming an angle θ of 30 ° to 60 °. The method of claim 1, The shading network having a soundproof wall function, characterized in that the shape of the shading network is any one of L-shaped, I-shaped, T-shaped. The method of claim 1, The light shielding net having a soundproof wall function, characterized in that the light shielding net and the light shielding net is formed on the upper portion of the central separator at intervals of 10 cm to 20 cm. The method of claim 1, The sound shielding plate has a sound shielding wall function, characterized in that composed of aluminum, iron, stainless steel, plastic, and the like. The sound barrier of claim 2, wherein the combination of the shading net of claim 2 is composed of any one of a combination of an L-shaped and an inverted L-shaped shading net, a combination of an I-shape shading net, and a combination of a T-shape and an inverted T-shape shading net. Shading plate that combines functionality. The method of claim 5, A light shielding plate having a soundproof wall function, characterized in that the light shielding plate consists of 4 to 6 light shielding nets.