JPH09203012A - Noise barrier - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To provide a soundproof wall in which a soundproof wall main body is erected from an upper end of a wall-shaped base part, at a joining portion between an upper end surface of the wall-shaped base part and a lower end surface of the soundproof wall main body for a long term. It eliminates sound leakage and enhances aesthetics without impairing soundproofing. SOLUTION: A sound absorbing cover body 4 is attached along an upper end corner of a wall-shaped base portion 1, and by this cover body 4, a wall-shaped base portion is joined from a joint portion of the wall-shaped base portion 1 and a soundproof wall main body 2. To cover the upper part of the side wall of the part 1 to hide the mounting brackets and anchor bolts for mounting the soundproof wall main body 2 to the wall-shaped base part 1 to improve the aesthetic appearance and absorb the sound reaching the cover body 4 Therefore, the soundproof effect is not impaired by the cover body 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a soundproof wall installed along a highway or along a railroad, for the purpose of insulating and absorbing noise caused by traveling of a vehicle or the like.

[0002]

2. Description of the Related Art Conventionally, a soundproof wall of this type generally has a large number of openings from the upper end of a wall-shaped base made of concrete or the like installed along a highway or railway. A soundproof wall body in which a sound absorbing material such as glass wool or rock wool is mounted is erected in a hollow panel body formed of a front plate and a back plate.

[0003]

However, in such a soundproof wall, the upper end surface of the wall-shaped base portion is not always smooth, and the upper end surface of the wall-shaped base portion and the lower end surface of the soundproof wall main body are joined together. A gap may be formed in a portion, and sound leakage may occur from this gap. In order to prevent this sound leakage, it is also possible to fill the gap between the upper end surface of the wall-shaped base and the lower end surface of the soundproof wall body with sponge or the like,
Sponge has poor durability and may deteriorate over time or fall off, which poses a problem as a long-term measure.

Further, in such a soundproof wall, a mounting bracket for mounting the soundproof wall main body, an anchor bolt, or the like is exposed at the upper end surface of the wall-shaped base portion, which may impair the appearance. As a countermeasure for this, a metallic decorative mold material is attached to the upper end surface of the wall-shaped base part so as to cover these mounting brackets, anchor bolts, etc. Because it is reflected and diffused,
The soundproof effect was sometimes impaired.

Therefore, the present invention solves the above-mentioned problems,
At the joint between the upper end surface of the wall-shaped base and the lower end surface of the soundproof wall body, it is intended to provide a soundproof wall that eliminates sound leakage for a long period of time and enhances aesthetics without impairing the soundproof effect. .

[0006]

In order to achieve the above object, the present invention has the following arrangement. That is, the soundproof wall according to the present invention is a soundproof wall in which the soundproof wall main body is erected from the upper end of the wall-shaped base part, and has a sound absorbing property at least along the corner of the sound source side of the upper end of the wall-shaped base part. A cover body is provided, and is covered by the cover body from a joint portion between the wall-shaped base portion and the soundproof wall main body to an upper side wall of the wall-shaped base portion.

According to the present invention, the cover body is attached along the upper end corner of the wall-shaped base portion from the joint between the wall-shaped base portion and the soundproof wall body to the upper side wall of the wall-shaped base portion. Therefore, the mounting brackets, anchor bolts, etc. for mounting the soundproof wall main body to the wall-shaped base portion are hidden by the cover body and are not directly exposed to the outer appearance, and therefore the aesthetic appearance is not spoiled.

Further, since the cover body has a sound absorbing property and the sound reaching the cover body is absorbed, the soundproof effect is not impaired by the cover body. Moreover, since the cover body covers not only the joint between the wall-shaped base portion and the soundproof wall body but also the joint portion to the upper side wall of the wall-shaped base portion, conventionally, the cover body is attached to the upper side wall of the wall-shaped base portion. Sounds reflected and diffused are also absorbed by the cover body.

The cover body is not particularly limited in its structure and material as long as it has a sound absorbing property and is attached along at least the corner of the wall-shaped base portion on the sound source side. The sound absorbing material may be mounted in a hollow body having a large number of openings, or the sound absorbing material may be formed into a porous plate shape.

In the former cover body, the sound absorbing material is protected in the hollow body and is excellent in durability and strength, and a large number of openings on the front surface appear as a pattern in the appearance, so that it has a cosmetic effect. It is excellent. The latter cover body does not require the hollow body as in the former case, and can be obtained by molding the sound absorbing material into a porous plate as appropriate, so the structure is simplified and it is compatible with complicated shapes. can do.

Further, even if the cover body separates from the upper end corner of the wall-shaped base due to contact or collision of a vehicle or the like, the wall-shaped base is prevented from falling and scattering on the road to cause a secondary disaster. It is preferable that a fall prevention wire is attached to the cover body to prevent the cover body from dropping from the upper end corner of the.

[0012]

Next, an embodiment of the present invention will be specifically described with reference to the drawings. First, FIG. 1 is a front view showing an embodiment of a soundproof wall according to the present invention, FIG. 2 is a sectional view thereof, FIG. 3 is a perspective view of a cover body used in FIG. 1, and FIG. 4 is a cover body of FIG. FIG. 1 to 4, reference numeral 1 is a wall-shaped base portion made of concrete or the like installed along a highway or railroad track, and 2 is a soundproof wall main body standing from the upper end of the wall-shaped base portion 1. Is.

Generally, as a mounting structure of the soundproof wall main body 1, first, a plurality of anchor bolts 11 are driven along the upper end surface of the wall-shaped base portion 1 at predetermined intervals, and the anchor bolts 11 are attached at their lower ends. A plurality of struts 3 are erected at a predetermined interval by fixing the mounting lugs 31 of the H-shaped steel struts 3 welded to the studs 3 to the studs 3 at predetermined intervals. The soundproof wall main body 2 is mounted by dropping the soundproof wall main body 2 from above between the concave grooves facing each other.

The soundproof wall body 2 is made of glass wool, rock wool, or the like enclosed in a film of polyvinyl fluoride or the like in a hollow panel body formed of a front plate 22 having a large number of openings 21 and a back plate 23. The sound absorbing member 24 is mounted, and the sound incident from the opening 21 of the front plate 22 is absorbed by the sound absorbing member 24 and is shielded by the back plate 23. The front plate 22 is, for example, an aluminum alloy plate, a rear plate 23.
A metal plate such as a zinc iron plate is generally used, but is not particularly limited, and a synthetic resin plate such as a polycarbonate or an acrylic copolymer vinyl chloride may be used. As described above, the soundproof wall main body 2 according to the present embodiment has both sound absorption and sound insulation. For example, a translucent soundproof plate obtained by holding a transparent polycarbonate plate with a frame body,
It may mainly have a sound insulation effect.

Reference numeral 4 denotes a long cover body having a sound absorbing property, and an L-shaped support metal fitting 5 is attached to an upper end of the wall-shaped base portion 1, that is, a corner portion on the sound source side. 5
The cover body 4 is bolted to the wall-shaped base portion 1 so that the cover body 4 is disposed along the upper corner of the wall-shaped base portion 1. The cover body 4
Is a horizontal portion 41 that is projected on the upper end of the wall-shaped base portion 1,
The horizontal portion 41 is covered so as to cover from the joint between the wall-shaped base portion 1 and the soundproof wall body 2 to the upper side wall of the wall-shaped base portion 1.
An inverted L-shaped hollow body 4 composed of a front plate 43 and a rear plate 44, which is composed of a hanging portion 42 that is bent downward and extends.
5, a large number of openings 46 are formed in the front plate 43 of the hanging portion 42, and glass wool, rock wool, etc. enclosed in a film of polyvinyl fluoride or the like, or porous sound absorbing material is formed in the hanging portion 42. A sound absorbing material 47 made of a plate or the like is attached.

The sound that has entered the hollow body 45 through the opening 46 is absorbed by the sound absorbing material 47 and is shielded by the back plate 44. The hollow body 45 is generally formed of a metal plate such as an aluminum alloy or a zinc iron plate, a synthetic resin plate such as a polycarbonate or an acrylic copolymer vinyl chloride, or the like. The opening 46 is provided only in the hanging portion 42, but in order to absorb the sound with the cover body 4 as much as possible, a sound absorbing material is inserted also in the horizontal portion 41, and the front surface of the horizontal portion 41 is also attached. An opening may be provided.

In this embodiment, assuming that the sound source is only on one side, the cover body 4 is attached only to the corner portion on the sound source side of the upper end of the wall-shaped base portion 1, and the other corner portion has the conventional decoration. When the mold material 6 is attached, but the sound sources are on both sides, as in the case of installing in the center of the opposite lane, the cover body 4
Are preferably attached to the corners on both sides of the upper end of the wall-shaped base 1.

Next, FIG. 5 is a cross-sectional view showing another embodiment of the soundproof wall according to the present invention. In the embodiment shown in FIGS. 1 to 4, the cover body 4 and the decorative mold member 6 are separately formed. However, in the present embodiment, the cover body 4 and the decorative mold material 6 are provided side by side on both side edges of the substrate 7 to form an integrated structure. Therefore, in the embodiment according to FIGS. 1 to 4, as a mounting procedure, first, the soundproof wall main body 2 is erected on the upper end of the wall-shaped base portion 1, and then the cover body 4 and the decorative mold material 6 are respectively attached later. However, in the present embodiment, when the pillar 3 is erected on the upper end of the wall-shaped base portion 1, the substrate 7 is sandwiched between the upper end of the wall-shaped base portion 1 and the mounting bracket 31 at the lower end of the pillar 3. The cover body 4 and the decorative mold material 6 are attached at the same time. Therefore, the cover body 4 according to this embodiment can be attached only when a soundproof wall is newly installed.
Then, it can be retrofitted to the existing noise barrier.

The cover body 4 shown in FIG. 5 is a semicircular hollow body 45 having a sound absorbing material 47 inserted therein, and a large number of holes or meshes are formed in the lower half of the front plate 43 of the hollow body 45. Although the opening 46 is formed, the opening 46 may be formed on the entire surface of the front plate 43 of the hollow body 45, and the shape is not limited to the semicircle.

Next, FIG. 6 is a sectional view showing still another embodiment of the soundproof wall according to the present invention. In this embodiment, the back surface of the hollow body 45 constituting the cover body 4 serves as the support fitting 5. First, the support fitting 5 is attached to a corner of the upper end of the wall-shaped base portion 1, the front plate 43 having a large number of openings 46 is attached to the support fitting 5, and the sound absorbing material 47 is inserted therein. The difference is substantially the same as the embodiment shown in FIGS. As described above, the back surface of the hollow body 45 forming the cover body 4 may also serve as the support fitting 5, or may be a corner of the upper end of the wall-shaped base 1 or the upper portion of the side wall itself.

Next, FIG. 7 is a sectional view showing still another embodiment of the soundproof wall according to the present invention, and FIG. 8 is a perspective view of the cover body used in FIG. In this embodiment, unlike the above, the cover body 4 is formed by molding a sound absorbing material into a porous long plate-shaped body. Examples of the material include metal fibers such as aluminum bonded through a binder,
A material made of a sintered material obtained by sintering metal powder or particles, a ceramic powder or particles, a metal short fiber, or the like, or a material made of a foam such as a metal foam material, an organic foam material, or an inorganic foam material is appropriately used. The cover body 4 has the upper end of the porous plate-like body extending above the upper end of the wall-shaped base portion 1 and the lower end from the joint portion of the wall-shaped base portion 1 and the soundproof wall body 2 to the wall. It is formed in a substantially U-shape extending downward so as to cover the upper side wall of the wall-shaped base portion 1, and is bolted to a substantially C-shaped support metal fitting 5 attached to a corner portion of the wall-shaped base portion 1. Installed.

Next, FIG. 9 is an exploded perspective view showing still another embodiment of the soundproof wall according to the present invention, which prevents the cover body 4 from dropping from the upper end corner portion of the wall-shaped base portion 1. A fall prevention wire 8 for the purpose is attached to the cover body 4. That is, the support metal fittings 5 are attached to the corners of the upper end of the wall-shaped base portion 1, the upper and lower ends of the support metal fittings 5 are bent inward, and the bent portions 51 have screw holes 52 respectively.
And the left and right ends are similarly bent inward to form vertical walls 53 that face each other, and horizontal holes 54 are formed in the vertical walls 53 to form a substantially box shape.

On the other hand, in the cover body 4, the front plate 43 of the cover body 4 extends from the joint portion between the wall-shaped base portion 1 and the soundproof wall body 2 to the wall-shaped base portion 1.
Is formed in a substantially U-shape so as to cover the upper part of the side wall, and elongated holes 48 are formed in the vicinity of both ends thereof so as to face the screw holes 52, respectively, and both end edges are bent inward to stand up pieces 49. The vertical piece 49 has a through hole 491 penetrating the lateral hole 54 at the center thereof. Then, the standing piece 49 is inserted between the opposed vertical walls 53, the front plate 43 is externally fitted to the support fitting 5, and the mounting screw 9 is screwed into the screw hole 52 from the elongated hole 48 to be attached to the front plate 43. Is fixed to the support fitting 5, and the fall prevention wire 8 is pierced between the lateral hole 54 and the insertion hole 491.
The stoppers 81 are attached to both ends of the. Reference numeral 44 denotes a back plate, and the back plate 44 and the front plate 43 form a hollow body 45. A sound absorbing material 47 is inserted into the hollow body 45, and a large number of openings 46 are formed in the front plate 43. What is formed is similar to the above-described form.

In this embodiment, even if the front plate 43 is detached from the support fitting 5 due to contact or collision of a vehicle or the like, since the front plate 43 is connected to the support fitting 5 by the fall prevention wire 8, the road is prevented. It does not fall up and is prevented from a secondary disaster due to the scattering of the front plate 43.

[0025]

According to the present invention, the cover body is attached along the upper corner of the wall-shaped base portion from the joint between the wall-shaped base portion and the soundproof wall body to the upper side wall of the wall-shaped base portion. Since it is covered, the mounting metal fittings and anchor bolts for mounting the soundproof wall main body to the wall-shaped base are hidden by the cover body and are not directly exposed to the appearance, and therefore the appearance is not spoiled.

Further, since the cover body has a sound absorbing property and the sound reaching the cover body is absorbed, the soundproof effect is not impaired by the cover body. Moreover, since the cover body covers not only the joint between the wall-shaped base portion and the soundproof wall body but also the joint portion to the upper side wall of the wall-shaped base portion, conventionally, the cover body is attached to the upper side wall of the wall-shaped base portion. Sounds reflected and diffused are also absorbed by the cover body.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a soundproof wall according to the present invention.

FIG. 2 is a sectional view of FIG.

FIG. 3 is a perspective view of a cover body used in FIG.

FIG. 4 is an enlarged cross-sectional view of the cover body of FIG.

FIG. 5 is a cross-sectional view showing another embodiment of the soundproof wall according to the present invention.

FIG. 6 is a cross-sectional view showing still another embodiment of the soundproof wall according to the present invention.

FIG. 7 is a sectional view showing still another embodiment of the soundproof wall according to the present invention.

FIG. 8 is a perspective view of the cover body used in FIG.

FIG. 9 is an exploded perspective view showing still another embodiment of the soundproof wall according to the present invention.

[Explanation of symbols]

 1 Wall-shaped base part 11 Anchor bolt 2 Sound-proof wall main body 3 Strut 31 Mounting bracket 4 Cover body 41 Horizontal part 42 Hanging part 43 Front plate 44 Back plate 45 Hollow body 46 Opening part 47 Sound absorbing material 48 Long hole 49 Standing piece 491 Insertion hole 5 Support metal fittings 51 Bent portion 52 Screw hole 53 Vertical wall 54 Horizontal hole 6 Decorative mold material 7 Substrate 8 Fall prevention wire 81 Stopper 9 Mounting screw

Claims (4)

[Claims] 1. A soundproof wall in which a soundproof wall main body is erected from an upper end of a wall-shaped base part, and a sound-absorbing cover body is provided along at least a corner of a sound source side of an upper end of the wall-shaped base part. A soundproof wall, which is provided and is covered by the cover body from a joint portion between the wall-shaped base portion and the soundproof wall main body to an upper portion of a side wall of the wall-shaped base portion. 2. The soundproof wall according to claim 1, wherein the cover body has a hollow body having a large number of openings in a front surface thereof and a sound absorbing material attached to the hollow body. 3. The soundproof wall according to claim 1, wherein the cover body is formed by molding a sound absorbing material into a porous plate shape. 4. A fall prevention wire for preventing the cover body from dropping from the upper end corner of the wall-shaped base portion is attached to the cover body.
The soundproof wall described in 2 or 3.