JP4338063B2 - Soundproof unit mounting structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a soundproof unit mounting structure that is mounted on an upper portion of a soundproof wall provided to reduce noise generated from roads, railways, factories, and the like.
[0002]
[Prior art]
Conventionally, as a measure for preventing noise generated from roads, railways, factories, etc., it is widely used to install a soundproof wall in order to prevent noise from directly propagating from a noise generating source. This is because, among various noise prevention measures, the soundproof wall is relatively inexpensive and is effective against various noise sources. In order to increase the noise reduction effect, it is necessary to increase the height of the soundproof wall. However, increasing the noise barrier increases the cost (the higher the height, the higher the construction cost and the higher the cost). In addition, raising the soundproof wall has many problems such as sunlight, landscape, view, feeling of pressure, ventilation, radio interference, wind resistance load and the like.
[0003]
Furthermore, if the noise reduction effect is not sufficient with the straight wall alone, the tip of the soundproof wall is folded to the shape of the noise source and the tip of the soundproof wall is the noise source. There are curved soundproof walls that are curved, but these are more problematic than landscape walls, landscapes, views, pressure, ventilation, radio interference, and wind resistance.
[0004]
With the recent increase in traffic volume and speeding up of vehicles, the environmental noise problem has become serious, and there is no other countermeasure. Therefore, at the expense of the above problems, straight wall type soundproofing with a height of 3m, 7m, 10m. Walls, bendable soundproof walls, and curved soundproof walls are used.
[0005]
However, even if these sound barriers are used, they can only be expected to have an effect commensurate with the height of the sound barrier. In general, at a far position (at a distance of about 20 m from the soundproof wall), the noise reduction effect obtained by increasing the height of the soundproof wall by 1 m is about 1 dB.
[0006]
Therefore, in order to increase the noise reduction effect without increasing the height of the soundproof wall, a Y-type soundproof unit is configured by providing a pair of branch walls so as to form an opening upward. A soundproof wall has been developed. Using this Y-type soundproof wall, the noise from the sound source was measured at the evaluation point. When this measurement result was compared with the measurement result using a straight wall having the same height instead of the Y-type soundproof wall, the Y-type soundproof wall had a greater noise reduction effect than the straight wall.
[0007]
Furthermore, a so-called reindeer-type soundproof unit having a re-branching wall that is bent inwardly from the front end of a pair of branch walls has been developed. This reindeer type soundproof unit has a greater noise reduction effect than the Y type soundproof unit.
[0008]
The soundproof wall equipped with Y-type and reindeer-type soundproofing units can improve the noise reduction effect without increasing the height, but it has a three-dimensional shape with an open upper branch wall. It was difficult. Further, even when this branch wall portion is attached later on the straight wall, a large amount of space is required for storage and transportation before the attachment, which is very inefficient and increases the cost.
[0009]
[Problems to be solved by the invention]
Accordingly, the present invention provides a soundproof unit mounting structure that makes it easy to mount a soundproof unit such as a Y-type or a reindeer type on the main body wall, and can reduce the space and reduce costs during storage and transportation. The purpose is to do.
[0010]
[Means for Solving the Problems]
In order to achieve such an object, the present invention has a structure in which pillars made of H steel are erected at predetermined intervals, a wall body is provided between these pillars to constitute a body wall, and at least a sound source side and an anti-sound source side A soundproof unit having a substantially Y-shaped side cross section with a pair of branch walls extending to the top of the main body wall, and connecting side surfaces of a plurality of soundproof units between adjacent columns. A mounting bracket that fits into the U-shaped passage of the column is attached to both ends of a plurality of soundproof units connected to each other, and a flange that is placed on the upper end of the column is provided at the upper end of the mounting bracket. The mounting bracket is fixed to the column by attaching the bracket to the upper end of the column.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Preferred embodiments of the present invention will be described below with reference to the drawings.
[0012]
1 is a plan view seen from above in a state where the soundproof unit 4 and the second soundproof unit 13 are attached to the upper part of the main body wall 10, and FIG. 2 is a view seen from the front of FIG. 1 and 2, pillars 1 made of H steel are erected at a predetermined interval, and a wall body 2 is provided between the pillars 1 to constitute a body wall 10. A soundproof unit 4 having a pair of branch walls 3 and 3 extending at least on the sound source side and the counter sound source side and having a substantially Y-shaped side section is attached on the main body wall 10. Mounting brackets that connect the side surfaces of a plurality of soundproof units 4 to a size corresponding to the width between adjacent struts 1 and fit into the U-shaped passages of the struts 1 at both ends of the plurality of soundproof units 4 that are connected. 5 is attached. The side surfaces of the plurality of soundproof units 4 are connected using a plurality of reinforcing plates 7. In FIG. 2, reference numerals 8, 9, 11, and 12 denote frames, and sound absorbing materials are provided in these frames 8, 9, 11, and 12. Further, as shown in FIG. 1, a second soundproof unit 13 is attached to the soundproof unit 4 on the side opposite to the sound source. Fifteen of the second soundproof units 13 are used in this embodiment, and the respective side surfaces are connected to each other. The length W ₂ when 15 side surfaces of the second soundproof unit 13 are connected to each other is 3750 mm. Further, the entire length W ₁ when the mounting bracket 5 was attached to both ends of the soundproof unit 4 connected to each other was set to 3960 mm. In FIG. 1, reference numeral 14 denotes a gap plate.
[0013]
FIG. 3 is an enlarged view of a portion indicated by III in FIG. The mounting bracket 5 is fitted into the U-shaped passage 1A of the column 1 made of H steel. The mounting bracket 5 is fixed to the frame 9 in the embodiment. At the upper end of the mounting bracket 5, a receiving bracket 15 having a flange portion 15 </ b> A placed on the upper end of the column 1 is fixed to the upper end thereof. The details of the mounting bracket 5 and the receiving bracket 15 are as shown in FIG. A groove 15B is formed in the metal fitting 15. Further, the mounting bracket 5 is formed with a protrusion 5A that is cut and raised to give a spring property, and the tip of the protrusion 5A is in pressure contact with one inner wall of the U-shaped passage 1A of the column 1. .
[0014]
FIG. 5 is a cross-sectional view taken along line AA shown in FIG. It shows the state. In this embodiment, the tip of the branch wall 3 is bent inward to form the re-branch wall 3A, and the side cross-sectional shape is substantially rhombus. Further, the second soundproof unit 13 can be attached to the soundproof unit 4, and the second soundproof unit 13 also has a soundproof space 13 A similar to the soundproof unit 4. Further, another soundproof space 13B is provided between the soundproof space 13A and the soundproof unit 4. Further, a bracket 17 is provided, and the second soundproof unit 13 is attached to the soundproof unit 4 using an arm or the like.
[0015]
FIG. 6 shows a side view of the mounting bracket 5 and shows details of the protrusion 5A. The protrusion 5A is formed by notching the lower end side of the mounting bracket 5 in an inverted U shape (notch portion 5B) and bending the uncut plate piece outward.
[0016]
The soundproof unit 4 composed of the branch walls 3 and 3 and the re-branch walls 3A and 3A can be configured by attaching a metal plate such as a galvanized steel plate between the reinforcing plates 7. In this embodiment, the second soundproof unit 13 is provided side by side with the soundproof unit 4 at a position opposite to the sound source side, and is formed from a lightweight plastic material. As a plastic material to be used, polypropylene, ABS resin, polycarbonate or the like having a shape as shown in FIG. 5 and having a width of about 250 mm is formed, and these are connected side by side to form one branch wall 3 of the soundproof unit 4. Connect to the side.
[0017]
【The invention's effect】
As described above, according to the present invention, the side surfaces of a plurality of soundproofing units are connected to each other so as to have a size corresponding to the width between adjacent struts. A mounting bracket that fits into the channel is attached, and a bracket with a collar that is placed on the upper end of the column is fixed to the upper end of the mounting bracket, and the mounting bracket is fixed to the column with the flange placed on the upper end of the column Therefore, the mounting position of the soundproof unit on the upper wall of the main body is also determined, and the mounting work can be easily performed. In addition, in the case where a projection is provided on the mounting bracket that fits into the U-shaped passage of the column made of H steel, and this projection is pressed against the inner wall of the U-shaped passage, the mounting bracket is fitted into the U-shaped passage. Temporary fixing is performed in the locked state, and thereafter, operations such as bolting or welding can be easily performed. Furthermore, since the soundproof unit is assembled so that a plurality of soundproof units are connected between the support columns at the site, there is no need for transportation and storage.
[Brief description of the drawings]
FIG. 1 is a plan view showing a preferred embodiment of the present invention.
FIG. 2 is a front view of FIG.
FIG. 3 is an enlarged view of a portion indicated by III in FIG.
FIG. 4 is a cross-sectional view of a mounting bracket.
5 is a cross-sectional view taken along line AA in FIG.
FIG. 6 is a side view of the mounting bracket.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Support | pillar 1A U-shaped channel | path 2 Wall main body 3 Branch wall 4 Soundproof unit 5 Mounting bracket 15 Receiving bracket 15A Gutter 10 Main body wall

Claims (5)

A side cross-section comprising a pair of branch walls extending at least on the sound source side and the counter sound source side is constructed by standing up pillars made of H steel at predetermined intervals, providing a wall body between the pillars to constitute a body wall. A mounting structure for mounting a soundproof unit having a substantially Y shape on the top of the main body wall,
By connecting the side surfaces of multiple soundproofing units, configure the size corresponding to the width between adjacent columns,
Attach mounting brackets that fit into the U-shaped passages of the struts at both ends of the multiple soundproof units,
Fasten a bracket with a collar mounted on the upper end of the column to the upper end of this mounting bracket,
A mounting structure for a soundproof unit, wherein the flange is placed on the upper end of the support and the mounting bracket is fixed to the support. 2. The soundproof unit mounting structure according to claim 1, wherein a protrusion is formed on the mounting bracket, and the protrusion is pressed against an inner wall of the U-shaped passage of the column. The soundproof unit mounting structure according to claim 2, wherein the protrusion is formed by cutting and raising the side surface of the mounting bracket into an inverted U shape. The soundproof unit mounting structure according to any one of claims 1 to 3, wherein a plurality of second soundproof units having a soundproof space are connected to one branch wall of the soundproof unit. The soundproof unit mounting structure according to any one of claims 1 to 4, wherein the second soundproof unit is molded from a plastic material.

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