JP2000319823A - Sound absorption wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such a problem that the length of a sound absorption panel becomes unfitted for the span of struts due to erected precision or other conditions of struts or the like. SOLUTION: A panel holder 13 having a fitting chanel formed by a pair of mutually confronting side plates 15 is fixed to a foundation 2 by anchors. The lower end of a sound absorption panel 12 having a self-supportable rigidity is fitted in the channel and fixed thereto with bolts and nuts. Since no strut is used, there is no fear that the length of the sound absorption panel becomes unfitted according to erected precision or other conditions of struts. The sound absorption panel can be easily fitted to the fitting channel of the panel holder crawlingly laid on the foundation. In this way, installation workability of the sound absorption panel is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound absorbing wall installed along a road.

[0002]

2. Description of the Related Art An example of a conventional sound absorbing wall of this type is shown in FIGS. In these figures, 1 indicates a sound absorbing wall.
Reference numeral 2 denotes a concrete foundation on which the sound absorbing wall 1 is installed, and reference numeral 3 denotes a column made of, for example, H-shaped steel, which is erected at intervals in the length direction of the road. The column 3 is fixed to the concrete foundation 2 by anchoring a base plate 4 welded to the lower end thereof with anchor bolts 5, and is erected on the concrete foundation 2.
The sound absorbing panel 6 has, for example, a structure in which a sound absorbing material 7 such as rock wool is sandwiched between a back plate 8a and a front plate 8c having a large number of holes 8b as shown in an enlarged manner in FIG. It is attached between the columns 3 of the H-section steel. At this time, the sound absorbing panel 6 is inserted from above so that both ends are fitted into the H-shaped recess. The illustrated example has a structure in which four transverse sound absorbing panels 7 are added to the upper side of one support span. 9 is Kasagi.

[0003]

As described above, the conventional sound-absorbing wall 1 has a structure in which the sound-absorbing panel 6 is attached to the columns 3 standing upright on the concrete foundation 2 at intervals. is there. When this sound absorbing wall 1 is constructed, the support columns 3 are erected on the concrete foundation 2 at predetermined intervals, and then the sound absorbing panels 6 are attached. There is a problem that the length of the panel 6 does not match, and the sound absorbing panel 6 cannot be attached to the column 3. In this case, it is necessary to manufacture a sound absorbing panel 6 having a length that matches the spacing between the columns at the site, and since this manufacturing is performed in a factory, productivity and workability are extremely poor. Since the pillar conditions such as underground buried objects, reinforcing bars, peripheral equipment, and the like are constraints when the pillar 3 is constructed, it is often necessary to change the spacing between the pillars. Also in this case, it is necessary to manufacture the sound absorbing panel 6 having a length suitable for the on-site support interval in accordance with the construction column conditions. Therefore, productivity and workability are poor as described above. The wind pressure acting on the sound absorbing wall 1 mainly depends on the sound absorbing panel 6.
However, this wind pressure load is supported by the column 3. Therefore, wind pressure loads are concentrated on the roots of the columns 3, and it is necessary to provide a foundation structure that can withstand the concentrated loads. For example, a long anchor bolt is required, and the foundation becomes large.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional drawbacks, and does not cause a problem that the length of the sound absorbing panel becomes incompatible due to the accuracy of the columns and the conditions of the columns. It is another object of the present invention to provide a sound absorbing wall capable of simplifying the foundation of the sound absorbing wall.

[0005]

According to the present invention, there is provided a sound absorbing wall comprising a panel holding member having a pair of side plates opposed to each other so as to form a fitting groove extending in the length direction of a road. And a lower end of a self-supporting rigid sound absorbing panel is fitted and fixed in the fitting groove of the panel holding member.

According to a second aspect of the present invention, the panel holding member of the sound absorbing wall of the first aspect has an inverted π-shaped cross section in which the pair of opposed side plates is vertically fixed at a position inside the side edges of the base plate. A plurality of anchor insertion holes are provided in the length direction near the side edge of the base plate.

According to a third aspect, in the sound absorbing wall of the first aspect,
A step-shaped end member facing each other in an interlocking manner is fixed to each end of an adjacent sound absorbing panel, and the adjacent sound absorbing panels are connected by engaging the end members with each other.

According to a fourth aspect, in the sound absorbing wall of the first aspect,
A convex end member is fixed to one end of an adjacent sound absorbing panel, and a concave end member is fixed to the other end, and the adjacent sound absorbing panels are fitted with the convex and concave end members. It is characterized by being connected.

[0009]

FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described with reference to FIGS. FIG. 1 is a front view of a sound absorbing wall 11 according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1, and FIG. In these figures,
2 is a concrete foundation on which the sound absorbing wall 11 is installed. The sound absorbing wall 11 includes a sound absorbing panel 12 and a panel holding member 13 that holds a lower end of the sound absorbing panel 12, and a cap 24 is attached to an upper edge of the sound absorbing panel 12. As shown in FIGS. 3, 4, and 5, the sound absorbing panel 12 includes a front plate 21a, a back plate 21b, a bottom plate 21c, a top plate 21d, and left and right end members 21e. And a metal plate case 21 having a sound absorbing material 22 such as rock wool filled therein.
1a is a perforated metal plate having a large number of holes 21f (only a part is shown in the figure). Noise from vehicles running on the road enters the interior of the sound absorbing panel 12 through the holes 21 f of the front plate 21 a and is absorbed by the sound absorbing material 22.

[0010] The end member 21e of the sound absorbing panel 12 of the embodiment.
As shown in FIG. 5, the end members 21e of the adjacent sound absorbing panels 12 have a stepped shape facing each other so as to mesh with each other, and the end portions of the adjacent sound absorbing panels 12 are engaged with each other by the end members 12e. To be engaged.

The panel holding member 13 has an inverted π-shaped cross section in which a pair of opposed side plates 15 are vertically welded and fixed to positions inside the side edges of the base plate 14, as shown in an enlarged view in FIG. And the base plate 1
4 has a structure in which a plurality of anchor insertion holes 14a are formed in the length direction near both side edges. This anchor insertion hole 14a
By making the hole a long hole along the length direction of the base plate 14, the adjustment at the time of installation construction is facilitated. A drain hole 15b is provided at the lower end of the side plate 15. Also,
The reinforcing ribs 20 are welded and fixed to the outer surface of the side plate 14 to reinforce the side plate 14. And anchor bolt 16
Fix the base plate 14 to the concrete foundation 2 with
The pair of opposed side plates 15 of the panel holding member 13
The lower end of the sound absorbing panel 12 is fitted into the fitting groove 13a formed therebetween, and the mounting hole 1 is formed so as to penetrate the opposing side plate 15.
5a and the mounting hole 12a penetrated through the sound absorbing panel 12 are aligned, and the bolt 17 is passed through and the nut 18 is fastened and fixed. In the embodiment, as shown in FIG. 4, the sound absorbing panel 12 is connected to the panel holding member 1 via a packing 23.
3 is fitted in the fitting groove 13a. Thereby, the fitting of the sound absorbing panel 12 into the fitting groove 13a becomes tight, and the self-supporting performance of the sound absorbing panel 12 is enhanced.

The procedure for installing the sound absorbing wall 11 will be described.
It is arranged on the concrete foundation 2 in accordance with the anchor bolt 16 embedded in the concrete foundation 2, and is fixed with a nut 19. Next, the sound absorbing panel 12 is fitted into the fitting groove 13a of the panel holding member 13, and is fixed to the side plate 15 of the panel holding member 13 with the bolt 17 and the nut 18 as described above. In this case, the end of the adjacent sound absorbing panel 12
As shown in FIG. 5, the end members 21e are engaged so as to mesh with each other. The structure in which the end members 12d mesh with each other improves the rigidity of the sound absorbing panel 12 with respect to the wind pressure load. When the above operations are sequentially performed in the road length direction, the sound absorbing wall 11 that is continuous in the road length direction is installed. in this case,
It is not necessary to make the length of the sound absorbing panel 12 and the length of the panel holding member 13 equal, and they may be shifted from each other as shown in the figure. However, both the lengths 12 and 13 may be made equal.

Since the above-described sound-absorbing wall 11 does not use a support, unlike the conventional sound-absorbing wall 1, there is a problem that the length of the sound-absorbing panel 12 becomes incompatible depending on the accuracy of the support of the support and the conditions of the support. Never. Since the sound absorbing panel 12 is fitted and fixed in the fitting groove 13a extending in the road length direction of the panel holding member 13, when the sound absorbing panel 12 is mounted, the sound absorbing panel 12 is mounted in the road length direction of the panel holding member 13. There is no problem that the installation cannot be performed due to the installation accuracy. Note that the mounting hole 15a on the panel holding member 13 side may be a long hole that is long in the road length direction. In addition, since the panel holding member 13 is continuous in the road length direction, if there is an obstacle on the concrete foundation 2 side, the position of the anchor bolt 16 can be easily changed. There is no problem that the sound-absorbing panel 6 cannot be attached due to the (building column condition in the conventional example). In addition, since there is no problem that the length of the sound absorbing panel becomes incompatible, only products of a specified length need to be stocked as the sound absorbing panel, so that maintenance after installation is simplified, and maintenance is simplified. Costs are also lower. The wind pressure acting on the sound absorbing wall 11 mainly depends on the sound absorbing panel 1.
However, since the panel holding member 13 that transmits the wind pressure load to the concrete foundation 2 is not localized as in the case of the column, but exists continuously and is fixed at a plurality of locations in the road length direction, The load is dispersed and a simple foundation structure is sufficient, for example, the length of the anchor bolt can be shortened. Also,
Since the panel holding member 13 is located at a low position along the concrete foundation 2, the operation of fitting the sound absorbing panel 12 into the fitting groove 13a of the panel holding member 13 is performed in the same manner as in the related art. The operation is extremely easy as compared with the operation of inserting the sound absorbing panel into the recess from above, and the workability of installing the sound absorbing panel is improved.

FIG. 6 shows another embodiment of the end member of the sound absorbing panel. In this embodiment, a rectangular convex end member 31e is fixed to one end of an adjacent sound absorbing panel 12A, and a square concave end member 31e 'is fixed to the other end. And concave end members 31e and 31e 'are fitted and connected.

FIG. 7 shows still another embodiment of the end member of the sound absorbing panel. In this embodiment, an arc-shaped convex end member 41e is provided at one end of the adjacent sound absorbing panel 12B.
The other end is fixed to an arcuate concave end member 41e ', and the adjacent sound absorbing panels 12B are connected by fitting the arcuate convex and arcuate concave end members 41e, 41e' together.

The sound absorbing panel 12 is connected to the panel holding member 1.
The means for fixing to the third fitting groove 13a is not necessarily limited to the case using the bolt and nut as in the embodiment. Further, the sound absorbing panel in the present invention is not limited to the one having the metal plate case 21 as in the embodiment. In short, any material that has appropriate sound absorbing performance and has a rigidity that can stand on its own when the lower end portion is fitted and fixed in the fitting groove 13a of the panel holding member 13 is sufficient.

FIG. 8 shows another embodiment of the panel holding member. The panel holding member 13 ′ of this embodiment includes:
As a structure in which a pair of opposed side plates form a fitting groove extending in the road length direction, a plurality of short side plates 15 ′ are fixed to the base plate 14 at intervals in the road length direction. In addition, the opposing side plate 15 'in this embodiment.
Are not directly opposed in the width direction of the base plate 14, but are opposed in a staggered arrangement to form a fitting groove 13'a. In the figure, 15'a is a mounting hole, 14a is an anchor insertion hole, and 20 'is a reinforcing rib. Further, the panel holding member of the present invention can form a fitting groove by disposing a pair of, for example, angle irons directly opposite to each other on the installation portion foundation without using the base plate, and fixing them with anchors. is there.

[0018]

According to the present invention, the lower end of the self-supporting rigid sound-absorbing panel is fitted and fixed in the fitting groove of the panel holding member fixed to the base of the installation portion. Therefore, the following effects are obtained. There is no problem that the length of the sound-absorbing panel becomes incompatible due to the accuracy of the pillars, or that the length of the sound-absorbing panels does not match under the conditions of the pillars such as underground objects, reinforcing bars, and peripheral equipment. In addition, the workability at the construction site is improved, and the productivity at the factory where the members (sound absorbing panels) are manufactured is also improved. The wind pressure load acting on the sound absorbing wall is transmitted to the foundation via a panel holding member that is continuous in the length direction of the road. It only needs to be. Since the panel holding member is located at a lower position along the foundation, the operation of fitting the sound absorbing panel into the fitting groove of the panel holding member is easy, and the workability of installing the sound absorbing panel is improved. Since there is no problem that the length of the sound-absorbing panel becomes incompatible, only products of a specified length need to be stocked as the sound-absorbing panel, which simplifies maintenance after installation and reduces maintenance costs. Become cheap.

[Brief description of the drawings]

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

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a perspective view of the sound absorbing wall.

FIG. 4 is an enlarged view of a portion B in FIG. 2;

FIG. 5 is an enlarged sectional view taken along the line CC of FIG. 1;

FIG. 6 is a diagram showing an embodiment of a structure of a connecting portion between adjacent sound absorbing panels.

FIG. 7 is a view showing a further embodiment of the structure of a connection portion between adjacent sound absorbing panels.

FIG. 8 is a perspective view showing another embodiment of the panel holding member of the present invention.

FIG. 9 is a front view showing a conventional sound absorbing wall.

FIG. 10 is a sectional view taken along line DD of FIG. 9;

11 is an enlarged cross-sectional view taken along the line EE of FIG. 9;

[Explanation of symbols]

 2 Concrete foundation (installation part foundation) 11 Sound absorbing wall 12 Sound absorbing panel 12a Mounting hole 13 Panel holding member 13a Fitting groove 14 Base plate 14a Anchor insertion hole 15 Side plate 15a Mounting hole 16 Anchor bolt (anchor) 17 Bolt 18, 19 Nut 21 Metal Plate case 21a Front plate 21b Back plate 21c Top plate 21d Bottom plate 21e End member 21f Hole 22 Sound absorbing material

Claims (4)

[Claims] 1. A panel holding member having a pair of side plates facing each other so as to form a fitting groove extending in the length direction of a road is fixed to an installation base with an anchor, and the panel holding member is fixed to the fitting groove of the panel holding member. A sound absorbing wall, wherein a lower end portion of a sound absorbing panel having rigidity capable of standing by itself is fitted and fixed. 2. The panel holding member has an inverted π-shaped cross-section in which the pair of opposing side plates is vertically fixed at a position inside the side edges of the base plate, and has a length near the side edge of the base plate. 2. The sound absorbing wall according to claim 1, wherein a plurality of anchor insertion holes are provided in the vertical direction. 3. A stepped end member facing each other so as to mesh with each other at each end of an adjacent sound absorbing panel, and said adjacent sound absorbing panels are connected by engaging said end members with each other. The sound-absorbing wall according to claim 1. 4. A convex end member is fixed to one end of an adjacent sound absorbing panel and a concave end member is fixed to the other end, and the adjacent sound absorbing panels are connected to each other by the convex and concave end members. 2. The electronic device according to claim 1, further comprising:
The described sound absorbing wall.