JP3827474B2 - Sound barrier - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a soundproof wall installed along a road or a railway line.
[0002]
[Prior art]
In order to block noise from vehicles, soundproof walls are sometimes installed along roads and along railway lines. Conventionally, as such a soundproof wall, for example, there is one in which a wall plate made of concrete is attached so as to be dropped between opposing concave grooves of pillars made of H-shaped steel standing on the road at a predetermined interval. .
[0003]
[Problems to be solved by the invention]
However, in such a soundproof wall, it is necessary to install a column, and the wall plate made of concrete, which is a heavy object, is lifted to the height of the column and dropped between the recessed grooves of the column. A heavy machine such as a crane is required, and its construction is not easy.
[0004]
On the other hand, the noise barrier as described above can reduce noise pollution by being installed in a place where noise is generated due to running of the vehicle etc., but in recent years, noise pollution and exhaust gas from vehicles etc. The problem of environmental pollution due to the emitted nitrogen oxides has also been pointed out. However, the conventional sound insulation wall is only for the purpose of reducing noise pollution, and has no effect on air purification against environmental pollution by nitrogen oxides.
[0005]
Accordingly, the present invention is intended to solve the above problems, provide a soundproof wall that is easy to construct, can prevent noise pollution, and can purify the atmosphere.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is configured as follows.
That is, the soundproof wall according to the present invention has a sound absorbing material attached to the side surface of a wall plate made of concrete, and the wall plate is fixed on the road by inserting an anchor bolt into a through hole formed in a leg portion. The sound absorbing material is characterized in that a photocatalyst is supported on the outer surface thereof.
[0007]
ADVANTAGE OF THE INVENTION According to this invention, noise pollution can be prevented effectively by the sound-insulation effect of the wall board which consists of concrete, and the sound-absorption effect by the sound-absorbing material attached to the side surface.
[0008]
Moreover, nitrogen oxides in the air are effectively removed by the photocatalyst carried on the outer surface of the sound absorbing material, and air purification can be achieved. That is, air near the surface where a large amount of nitrogen oxide exists is rolled up by the wind pressure accompanying traveling of the vehicle etc. and carried to the outer surface of the sound absorbing material, while titanium dioxide etc. supported on the outer surface of the sound absorbing material by irradiation of ultraviolet rays Since the photocatalyst is activated, when nitrogen oxides in the air come into contact with the activated photocatalyst, they are oxidized to nitric acid by the strong oxidizing power and the presence of moisture due to the activity of the photocatalyst, and they are washed away by rainwater etc. And effectively removed.
[0009]
Further, since the sound absorbing material supporting the photocatalyst has a very large surface area due to the unevenness of the surface, there are many atmospheres in contact with the photocatalyst, and the air purification function by the photocatalyst is extremely excellent.
[0010]
In addition, the wall plate is fixed on the road by inserting anchor bolts into the through-holes drilled in the legs. There is no labor required for construction, and construction is easy.
[0011]
In the present invention, cut away diagonally the end face of the wall plate along the vertical direction, when a plurality of continuously arranged soundproof walls, even if the road is not curved, the notch surface which is diagonally cut out by continuously provided while facing has been made to be able to correspond to the road alignment.
[0012]
In addition, when a soundproof wall is installed, there is a feeling of pressure and there is a risk of damaging the surrounding cityscape, but when installing a sound absorbing material only on one side of a concrete wallboard, the other wallboard If stones, bricks, and other patterns are attached to the side, the feeling of pressure will be reduced and the aesthetics will increase, improving the cityscape.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be specifically described with reference to the drawings.
1 is a cross-sectional view showing an embodiment of a soundproof wall according to the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a side view, FIG. 4 is a side view of the other, and FIG. FIG. 6 is a plan view showing a state in which a plurality of lines are continuously provided in a curved line. FIG.
[0014]
In the drawings, 1 is a wall plate made of concrete, and 2 is a sound absorbing material attached to one side surface of the wall plate 1.
[0015]
The wall plate 1 has leg portions 11 projecting from the lower portions of both side surfaces, and anchor bolts 3 implanted in the foundation A are inserted into through holes 12 drilled in the leg portions 11, and nuts 4 are tightened. Has been fixed on the road. The said leg part 11 fixes the wall board 1 on a road, and prevents collapse, Comprising: The wall board 1 may be integrally formed from the concrete, and it is separate from concrete or another material. The formed leg portion 11 may be attached to the wall plate 1 in a later step. Reference numeral 13 denotes a thick portion for reinforcing the leg portion 11.
[0016]
The side surface to which the sound absorbing material 2 is attached may be flat and the entire back surface of the sound absorbing material 2 may be in close contact with the side surface. In this embodiment, however, a large number of recesses 15 formed by the ribs 14 are provided. The air layer 16 is formed on the back side of the sound absorbing material 2 by the recess 15. By providing the air layer 16 in this manner, noise is reflected and attenuated by the air layer 16, so that the sound absorbing performance is further improved. Further, a sound absorbing material may be provided in the air layer 16.
[0017]
Further, the wall plate 1 has a notch surface 17 in which a corner portion of the end surface is obliquely cut out in the vertical direction, and when a plurality of soundproof walls P are linearly connected as shown in FIG. Thus, in the case where a plurality of soundproof walls P are continuously provided in a curved shape, in any case, the soundproof walls P can be easily installed so as to correspond to the road alignment by providing the cutout surfaces 17 so as to face each other. Yes. In addition, 5 has shown the mortar which fills the clearance gap between the adjacent soundproof walls P, and the usage-amount is also reduced by providing the notch surface 17. FIG.
[0018]
Furthermore, it is preferable that a pattern 6 such as a stonework tone 61 or a brick tone 62 is provided on the other side surface of the wall plate 1 to which the sound absorbing material 2 is not attached. This pattern 6 reduces the feeling of pressure and increases the aesthetics, thereby improving the cityscape.
[0019]
As the sound absorbing material 2 attached to one side surface of the wall plate 1, glass wool or rock wool is generally used, but other materials made of metal fibers such as aluminum, or metal fibers bonded through a binder. It is also possible to use powders and granules such as metal and ceramic, sintered materials obtained by sintering short metal fibers, etc., and those made of foamed materials such as metal foamed materials, organic foamed materials, and inorganic foamed materials. There is no particular limitation.
[0020]
In order to attach the sound-absorbing material 2 to the side surface of the wall plate 1, it may be affixed when the wall plate 1 is concrete-molded, or may be affixed with an adhesive such as an adhesive or a double-sided adhesive tape, or a bolt or the like may be fixed. You may attach with a tool and the attachment method is not specifically limited.
[0021]
A photocatalyst 21 is carried on the outer surface of the sound absorbing material 2, and titanium dioxide is preferably used as the photocatalyst 21. Titanium dioxide may be rutile type, but is preferably anatase type because of its high activity. This titanium dioxide is activated by irradiating ultraviolet light having a wavelength region of 300 to 400 nm, and its activation has strong oxidizing power. The nitrogen oxides in the atmosphere in contact with the surface of titanium dioxide are oxidized and removed by nitric acid in the presence of water.
[0022]
The photocatalyst 21 may be carried on the other side surface of the wall plate 1 to which the sound absorbing material 2 is not attached. If the pattern 6 such as a stonework tone 61 or a brick tone 62 is attached to the other side surface of the wall plate 1, and the photocatalyst 21 is further supported thereon, the surface area on which the photocatalyst 21 is supported by the pattern 6 is increased. The air purification function by the photocatalyst 21 can be increased.
[0023]
In the above embodiment, the sound absorbing material 2 is attached only to one side surface of the wall plate 1, but may be attached to both side surfaces or may be partially attached to the side surface. Is not to be done.
[0024]
【The invention's effect】
According to the present invention, noise pollution can be effectively prevented by the sound insulation effect of the wall plate made of concrete and the sound absorption effect by the sound absorption material attached to the side surface, and by the photocatalyst carried on the outer surface of the sound absorption material. Thus, nitrogen oxides in the air are effectively removed, and air purification can be achieved. Moreover, since the surface of the sound-absorbing material carrying the photocatalyst is extremely large due to the unevenness of the surface, there are many atmospheres in contact with the photocatalyst, and the air purification function by the photocatalyst is extremely excellent.
[0025]
In addition, the wall plate is fixed on the road by inserting anchor bolts into the through-holes drilled in the legs. There is no labor required for construction, and construction is easy.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an embodiment of a soundproof wall according to the present invention.
2 is a plan view of FIG. 1. FIG.
FIG. 3 is a side view of FIG. 1;
4 is another side view of FIG. 1. FIG.
FIG. 5 is a plan view showing a state in which a plurality of soundproof walls in FIG. 1 are connected in a straight line.
6 is a plan view showing a state in which a plurality of soundproof walls in FIG. 1 are connected in a curved line. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Wall board 11 Leg part 12 Through-hole 13 Thick part 14 Rib 15 Recessed part 16 Air layer 17 Notch surface 2 Sound-absorbing material 21 Photocatalyst 3 Anchor bolt 4 Nut 5 Mortar 6 Pattern 61 Masonry-like pattern 62 Brick-like pattern

Claims (2)

A sound absorbing material is attached to the side surface of the wall plate made of concrete, and the wall plate is fixed on the road by inserting anchor bolts into through holes formed in the legs, and the sound absorbing material has a photocatalyst on its outer surface. When the end face of the wall plate is cut diagonally along the vertical direction, and multiple soundproof walls are connected in series, even if the road is curved, A soundproof wall characterized in that it can be adapted to the road alignment by being connected in series .  The soundproofing material according to claim 1 or 2, wherein a sound absorbing material is attached to one side surface of the wall plate made of concrete, and a pattern such as a masonry tone or a brick tone is attached to the other side surface of the wall plate. wall.

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