JP2001355210A - Sound insulating panel and constructing method for sound insulating wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sound insulating panel capable of shutting out noise over a wide range from low frequency to high frequency and a method capable of efficiently constructing a sound insulating wall having high sound insulating performance at a low cost. SOLUTION: A sound absorbing layer 4 formed of a porous material such as glass wool or the like is formed on the reverse side of a porous plate 2 having a plurality of opening parts 2 such as punching metal or wire gauze, and a space part 6 is formed on the reverse side of the sound absorbing layer 4 through a partitioning plate 3. Concrete or mortar is filled in the space part 6 to form a sound insulation layer 5. Further, this sound insulating panel having the space part 6 formed on the reverse side of the sound absorbing layer 4 through the partitioning plate 3 is used and successively mounted on a steel frame or the like, and concrete or mortar is filled in the space part 6 to construct the sound insulating wall.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soundproofing technique for blocking noise, and more particularly to a soundproofing panel used as a component of a soundproofing wall and a method for efficiently constructing a soundproofing wall having high soundproofing performance.

[0002]

2. Description of the Related Art In general, noise is cut off by constructing a sound-insulating wall in areas where noise is intense, such as around a facility machine in a factory, along a railway or the like, and the components of the sound-insulating wall are mainly shown in FIG. A panel as shown is used. Referring to the drawing, the structure is described as follows: a is a flat box-shaped outer frame formed of a steel plate or the like, and a perforated plate b (perforated plate) mainly made of punching metal is provided at the front opening thereof. A sound absorbing layer c containing a porous material having open cells (glass wool or other fibrous material) is formed inside the outer frame a. According to this type of panel, the sound-absorbing wall is formed by sticking the surface on the perforated plate b side to a frame such as a steel frame so as to face the noise generating source. Can be absorbed.

[0003]

However, in the conventional soundproof panel as described above, most of high frequency components are converted into heat energy efficiently by setting the aperture ratio of the perforated plate and the layer thickness of the sound absorbing layer. Although it can be absorbed, it is not effective in isolating low frequency band components.

That is, to improve the sound insulation performance, a material having a high areal density is effective according to the mass law, whereas a porous sound absorbing material such as glass wool converts sound waves into heat energy in the material and attenuates them. The sound insulation performance is low, for example, because many low frequency components are transmitted. Therefore, there is a case where a sound insulating layer is formed by providing a plate material with a high surface density such as a lead plate on the back side of the sound absorbing layer made of glass wool or the like, but if the layer thickness is small, sufficient sound insulating performance is not obtained, and if it is increased, There is a disadvantage that the weight of the panel increases, which not only hinders the construction of the soundproof wall but also increases the cost.

For this reason, there is a case where a concrete wall is first constructed at a predetermined place according to the conventional method, and then a panel as shown in FIG. According to this, the concrete wall forms a high-density sound insulation layer and can well cut off the low-frequency band, but this requires a lot of man-hours such as assembling a concrete formwork, and requires a long construction period and high cost. Disadvantage.

The present invention has been made in view of the above circumstances, and has as its object a soundproof panel capable of blocking noise over a wide band from low frequencies to high frequencies, and a high sound insulation performance. It is an object of the present invention to provide a method for efficiently constructing a soundproof wall at low cost.

[0007]

In order to achieve the above object, the present invention provides a method for constructing a soundproof panel and a soundproof wall as described below. (1) In a soundproof panel in which a sound absorbing layer made of a porous material such as glass wool is formed on the back surface of a perforated plate having a plurality of openings such as a punched metal or a wire mesh, a partition plate is provided on the back surface side of the sound absorbing layer. A sound insulation panel characterized by forming a space for filling a sound insulation material made of concrete or mortar, and filling the space with the sound insulation material to form a sound insulation layer. (2) In a soundproof panel in which a sound absorbing layer made of a porous material such as glass wool is formed on the back surface of a perforated plate having a plurality of openings such as a punching metal or a wire mesh, a punching metal or a wire mesh is provided on the back side of the sound absorbing layer. A space for filling a sound insulating material made of sand or pebbles or other particulate matter was formed through a partition plate having a plurality of openings, and the space was filled with the sound insulating material to form a sound insulating layer. A soundproof panel characterized by the above. (3) A sound absorbing layer made of a porous material such as glass wool is formed on the back surface of a perforated plate having a plurality of openings such as punched metal and wire mesh, and on the back surface side of the sound absorbing layer,
Using a soundproof panel in which a cylindrical space part whose both ends are fully open through a partition plate is formed, the soundproof panel is sequentially attached to a skeleton previously assembled at a predetermined place as a wall material, and the soundproof panel of each soundproof panel is formed. A method for constructing a soundproof wall, comprising connecting a space portion in a vertical direction and placing and filling concrete or mortar into the space portion from above. (4) A sound absorbing layer made of a porous material such as glass wool is formed on the back surface of a perforated plate having a plurality of openings such as punching metal and wire mesh, and on the back surface side of the sound absorbing layer,
A soundproof panel was used in which a cylindrical space with both ends opened entirely was formed via a partition plate having a plurality of openings such as punching metal and wire mesh, and the soundproof panel was assembled in a predetermined place as a wall material in advance. Attaching sequentially to the framework, connecting the spaces of each soundproof panel in the vertical direction, and driving sand or pebbles or other particulate matter into the spaces from above,
A method for constructing a soundproof wall, characterized by filling.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. First, FIG. 1 is a perspective view showing a preferred example of a soundproof panel according to the present invention, and FIG. 2 shows a cross section taken along line XX in FIG. In the figure, 1 is a flat box shape (hollow rectangular plate shape) formed by bending a steel plate.
The outer frame 1 has a groove-shaped cross section as shown in FIG. 2 and a perforated plate 2 as shown by a broken line on the front opening side thereof.
Is attached. The perforated plate 2 is a plate material in which a plurality of openings 2A are formed over the entire surface, and includes a perforated metal, a wire mesh, and the like. However, the opening 2A is not limited to a small-diameter round hole or lattice-shaped one, but may be a slit.

On the other hand, inside the outer frame 1, there is a rear portion 1A.
The sound-absorbing layer 4 and the sound-insulating layer 5A are formed with the partition plate 3 interposed therebetween. The sound absorbing layer 4 is made of a plate-like porous material having open cells therein, such as glass wool or rock wool, and is provided on the back surface of the perforated plate 2 so as to face the perforated plate 2. The sound insulation layer 5A is made of concrete or mortar solid and has a thickness of 5 mm to 100 mm, preferably 30 mm to 70 mm, and is provided on the back surface of the sound absorption layer 4 via the partition plate 3. In particular, the sound insulation layer 5A is made of a sound insulation material made of concrete or mortar as shown in FIG.
The space portion 6 formed between the rear portion 1A and the partition plate 3 is formed by filling.

That is, a space portion 6 having a predetermined layer thickness for filling concrete (fresh concrete) or paste-like mortar is formed between the partition plate 3 and the back surface portion 1A in advance inside the outer frame 1. Then, the above-mentioned sound insulating material filled in the space 6 is hardened, so that the sound insulating layer 5 is formed.
A is formed. The partition plate 3 is made of a non-opening steel plate or the like, which serves to prevent the sound insulating material before hardening from penetrating into the sound absorbing layer 4.

Here, according to the above soundproof panel, from the front side, a perforated plate 2, a sound absorbing layer 4 made of a porous material, a partition plate 3, a sound insulating layer 5A made of concrete or mortar, and an outer frame. The sound absorbing layer 4 has a multi-layer structure made of a porous material, or a vibration isolating plate such as a rubber plate (not shown) between the back surface and the partition plate 3, or A sound insulation plate made of heavy metal may be interposed.
Further, in the soundproof panel of this example, both ends in the longitudinal direction of the soundproof layer 5 are closed by a shield plate 7 such as an iron plate as shown in FIG. 1 so that the soundproof material before hardening does not flow out. It may be removed after curing, or may be left attached.

According to the soundproofing panel configured as described above, the perforated plate 2 is sequentially attached to a frame such as a steel frame with the perforated plate 2 facing the noise generation source, and the sound transmitted from the noise generation source is transmitted to the sound absorbing layer. 4, the components (especially low frequencies) transmitted through the sound absorbing layer 4 can be completely cut off by the sound insulating layer 5 without leaking to the outside. At a predetermined position of the outer frame 1, there is provided a mounting hole 8 for passing a bolt or the like as shown in FIG.

Although a preferred example of the soundproofing panel according to the present invention has been described above, the present invention is not limited to this. For example, as shown in FIGS. It can also be composed of a front frame 11 and a rear frame 12 having the same. The soundproof panel of FIG. 4 is an example in which the front frame 11 and the rear frame 12 are connected to each other while being shifted to the left and right. Among them, the sound absorbing layer 4 made of a porous material such as glass wool is formed inside the front frame 11, A perforated plate 2 made of perforated metal, wire mesh, or the like is attached to the front surface. The front frame 11 is overlapped with the front opening of the rear frame 12, and the rear portion thereof is formed as a non-opening partition plate 3 that separates the inside of the rear frame 12 from the sound absorbing layer 4. On the other hand, the inside of the rear frame 12 is formed as a space portion 6 having a predetermined layer thickness as shown in FIG. 3, and is filled with a sound insulating material made of concrete or mortar to form the sound insulating layer 5A as described above. Is done. Then, according to the soundproofing panel shown in FIG. 4, it can be sequentially attached to a frame such as a steel frame while abutting the stepped side surfaces.

The soundproof panel shown in FIG.
In this example, the width of the rear frame 12 is different from that of the rear frame 12, and the other configuration is the same as the soundproof panel of FIG. 4. Although omitted, the soundproof panel of this example is particularly
5 are smaller than the rear frame 12 as shown by a solid line in FIG. 5 and larger than the rear frame 12 as shown by an imaginary line in the same figure. It is designed to be attached to a frame such as a steel frame.

Next, FIG. 6 shows an example in which the sound insulating layer of the sound insulating panel in each of the above examples is formed of a sound insulating material made of sand, pebbles, or other granular material. In other words, the soundproof panel shown in FIG. 6 forms the sound insulating layer 5B by filling the space 6 shown in FIG. 3 with sand or pebbles or other particulate matter as a sound insulating material. After the sound insulating material is filled, both ends of the sound insulating layer 5B are closed by a shield plate 7 such as an iron plate so that the sound insulating material does not leak. In this example, the partition plate 3 is a plate material having a plurality of openings formed over the entire surface, such as a perforated plate 2 or a wire mesh, as shown by a broken line. According to such a soundproof panel, noise can be attenuated by the sound absorbing layer 4 and its transmitted component can be transmitted through the sound insulating layer 5B to be attenuated, which is particularly effective for soundproofing in a high frequency band. The sand and pebbles used as the sound insulating material are preferably porous materials, for example, silica sand and pumice stones. Such sound insulating materials include not only inorganic materials such as sand and pebbles but also artificial materials such as crushed pieces of ALC concrete. It can also be used after recycling.

Next, a method for constructing a soundproof wall according to the present invention will be described. First, FIG. 7 shows a preferred form of the soundproof panel used in the present construction method. As is clear from FIG. 7, this soundproof panel P has a plurality of openings 2 such as punched metal and wire mesh.
A perforated plate 2 having A, a sound absorbing layer 4 made of a porous material such as glass wool provided on the back surface thereof, a partition plate 3 provided on the back surface side of the sound absorbing layer 4, and an outer frame 1 holding them. Then, inside the outer frame 1, a cylindrical space 6 whose both ends are fully open is formed on the back side of the sound absorbing layer 4 via the partition plate 3. The cross-sectional shape is the same as that of the soundproof panel shown in FIG. That is, in the soundproof panel P shown in FIG. 7, the sound insulation layers 5A and 5B made of a sound insulation material such as concrete are not integrally formed in advance on the back side of the sound absorption layer 4 as in the above-described example, but the filling portion has a cylindrical shape. It is left as the space 6.

According to the present invention, it is possible to efficiently construct a soundproof wall having high sound insulation performance by using such a soundproof panel P and sequentially attaching it to a steel frame F as shown in FIG. it can. Hereinafter, the construction method will be described in detail. First, a skeleton F is assembled in a predetermined place in advance, and then the soundproof panel P configured as described above is sequentially attached to a wall portion of the skeleton F as a wall material. Here, the frame F is composed of columns S, horizontal members H, and the like, and these are assembled into a square shape so as to surround a noise generation source Q (sound source) such as a press machine or a private generator as shown in FIG. 8, for example. On the other hand, the soundproof panel P is attached to the frame F in order with the perforated plate 2 side facing the noise generation source Q and the openings at both ends of the space 6 facing up and down. In particular, each soundproofing panel P has its side face and both ends in the longitudinal direction abutted against each other, and connects the spaces 6 in the vertical direction (see FIG. 9). In addition, as shown in FIG. 9, it is preferable that both ends of the soundproof panels P are abutted at the positions of the transverse members of the frame so that sound leakage does not occur from the joints of the soundproof panels. For this reason, for example, a framed horizontal member H
As shown in FIG. 10, angle plates L and the like are attached to the upper and lower surfaces along the longitudinal direction, and the soundproof panel P corresponds to the holes 8 shown in FIG. A nut N for screwing the bolt B is attached to the inside of the peripheral edge of the sound absorbing layer 4.
In particular, the lowermost soundproof panel P is fixed to the frame base D as shown in FIG.
A support plate W such as a steel plate or a wooden plate is arranged at a lower end of the space 6.
Close the lower end of the.

After all the soundproofing panels P have been mounted on the frame F, concrete (mixed concrete) or paste is applied to the space 6 communicating in the vertical direction from above as shown by the arrow in FIG. Mortar is poured into the space 6 of each soundproof panel P and filled.
In addition, it is preferable to insert a vibrator into the space 6 during the filling of the concrete or mortar, so that the concrete or mortar can be spread over the entire space 6 without leakage. By curing and curing this, the upper and lower soundproof panels P constitute a completely integrated soundproof wall, and the back side of the sound absorbing layer 4 of each soundproof panel P is made of concrete or mortar. A heavy layer (sound insulation layer) is formed.

According to the soundproof wall constructed as described above, the high-frequency component of the noise is attenuated by the sound-absorbing layer 4 and a part of the high-frequency component transmitted through the sound-absorbing layer 4 and the low-frequency component are attenuated. Can be completely blocked by a layer of concrete or mortar (sound insulation layer). In constructing the soundproof wall as described above, in addition to providing an entrance with a soundproof door M attached to a part thereof as shown in FIG. 12, the ceiling portion U is closed using the soundproof panel shown in FIG. Preferably, a ventilation port G having a soundproof structure is provided in a part of the ceiling portion U.

The method of constructing a soundproof wall according to the present invention has been described above. However, the present invention is not limited to the structure of the soundproof wall surrounding a noise source as described above, but may be applied along a road or a railway. A similar sound barrier can be constructed.

In addition to the above method, after the soundproof panel P is attached to the skeleton F as a wall material, sand, pebbles, or other particulate matter is placed above the space 6 instead of concrete or mortar. Alternatively, it may be poured and filled in the inside. When the space 6 is filled with concrete or mortar, as the soundproof panel P as shown in FIG. 7, a partition plate 3 made of a plate material having no opening such as a steel plate is used, and sand or pebbles or other granular material is used. When the object is filled, the partition plate 3 is made of a plate material having a plurality of openings over the entire surface, such as a perforated metal or a wire mesh, like the perforated plate 2. In particular, when the partition plate 3 uses a soundproof panel P made of a plate material having a plurality of openings and the space portion 6 is filled with sand, pebbles, or other particulate matter, the space of the soundproof panel P disposed at the lowest level It is desirable that the lower end of the part 6 be completely closed by welding a metal plate or casting concrete. According to the soundproof wall thus obtained, the high frequency component of the noise is attenuated by the sound absorbing layer 4, and a part of the high frequency component and the low frequency component transmitted through the sound absorbing layer 4 are formed by sand or pebbles or other particulate matter. It can be attenuated and blocked by a layer (sound insulation layer).

[0022]

As is apparent from the above description, according to the soundproof panel of the first aspect of the present invention, a space is formed on the back side of the sound absorbing layer via a partition plate, and concrete is formed on the space. Alternatively, since the sound insulation layer formed by filling the mortar is formed, noise over a wide band can be completely cut off at low cost.

The soundproofing panel according to the second aspect is also low in cost and has high soundproofing properties. In particular, the soundproofing layer made of sand or pebbles or other granular material can absorb high frequency components transmitted through the sound absorbing layer, and also has low frequency components. Many can also be blocked.

On the other hand, according to the method for constructing a soundproof wall according to claim 3, a soundproof panel having a space portion on the back side of the sound absorbing layer is used, and the soundproof panel is mounted on a frame assembled at a predetermined place. As a formwork, the sound insulation layer is formed by filling the space with a sound insulation material made of concrete or mortar, so after constructing a concrete wall as in the past, a soundproof panel Compared to the installation of soundproofing panels, a soundproofing wall with high sound insulation performance can be constructed more efficiently in a short period of time, and since the soundproofing material is filled after the installation of the soundproofing panel, the work of installing the soundproofing panel can be performed with low labor. it can. The same effect as described above can also be obtained by the method of claim 4.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a partially cut-away soundproof panel according to claim 1;

FIG. 2 is a sectional view taken along line XX in FIG.

FIG. 3 is a cross-sectional view of the soundproof panel before a sound insulating layer is formed.

FIG. 4 is a sectional view showing a modified example of the soundproof panel according to claim 1;

FIG. 5 is a sectional view showing a modified example of the soundproof panel according to claim 1.

FIG. 6 is an end view showing the soundproof panel according to claim 2 partially cut away;

FIG. 7 is a perspective view showing a soundproof panel applied to the method for constructing a soundproof wall of the present invention.

FIG. 8 is a schematic plan view showing a state where the soundproof panel of FIG. 7 is attached to a skeleton.

9 is a sectional view taken along line XX in FIG.

FIG. 10 is a partially enlarged view of FIG. 9;

11 is a partially enlarged view of FIG. 9;

FIG. 12 is a schematic perspective view showing a soundproof wall constructed according to the present invention.

FIG. 13 is a perspective view showing a conventional soundproof panel partially broken away.

[Explanation of symbols]

 Reference Signs List 1 outer frame 2 perforated plate 3 partition plate 4 sound absorbing layer 5A, 5B sound insulating layer 6 space

Claims (4)

[Claims] 1. A soundproofing panel having a sound absorbing layer made of a porous material such as glass wool formed on a back surface of a perforated plate having a plurality of openings such as a punched metal or a wire mesh, wherein a partition plate is provided on the back side of the sound absorbing layer. Forming a space for filling the sound insulating material made of concrete or mortar through
A soundproof panel characterized in that the space is filled with the soundproof material to form a soundproof layer. 2. A soundproof panel comprising a perforated plate having a plurality of openings, such as a punching metal or a wire mesh, having a sound absorbing layer made of a porous material such as glass wool. A space for filling the sound insulating material made of sand or pebbles or other particulate matter through a partition plate having a plurality of openings such as a wire mesh or a wire mesh, and the space is filled with the sound insulating material to form a sound insulating layer. A soundproof panel characterized by being made. 3. A sound absorbing layer made of a porous material such as glass wool is formed on the back surface of a perforated plate having a plurality of openings such as a punching metal or a wire mesh, and a partition plate is provided on the back surface side of the sound absorbing layer. Using a soundproof panel formed by forming a cylindrical space part whose both ends are fully open through, the soundproof panel is sequentially attached to a frame assembled in a predetermined place as a wall material, and the space part of each soundproof panel is formed. A method of constructing a soundproof wall, characterized by placing concrete or mortar into and filling a space from above in a vertical direction. 4. A sound-absorbing layer made of a porous material such as glass wool is formed on the back surface of a perforated plate having a plurality of openings such as a punching metal or a wire mesh. Using a soundproof panel formed by forming a cylindrical space part whose both ends are fully open through a partition plate having a plurality of openings such as a wire mesh, and sequentially using the soundproof panel as a wall material and a frame assembled in a predetermined place in advance. A method for constructing a soundproof wall, comprising: attaching, and connecting spaces of the respective soundproof panels in a vertical direction, and placing and filling sand or pebbles or other particulate matter into the spaces from above.