JP7313191B2 - Sound insulation wall and sound insulation panel used therefor - Google Patents

Description

TECHNICAL FIELD The present invention relates to a sound insulation wall that blocks noise generated from a noise source and a sound insulation panel used therefor.

On highways, sound insulation walls are generally installed to block the noise generated by the running of vehicles in order to suppress the diffusion of the noise to surrounding areas. As this sound insulation wall, there are many types in which a plurality of sound insulation panels containing sound absorbing materials are provided between H-shaped steel posts erected at predetermined intervals on the roadside or median strip of the road (see, for example, Patent Document 1). Such sound barriers are sometimes installed to block noise generated by noise sources such as railway vehicles traveling on railroad tracks and factories.

In the above type of sound insulation wall, the base plate, which is placed on the upper surface of the foundation, is usually attached to the lower end of the pillar, and the base plate and the pillar are fixed on the foundation by a fixing member such as an anchor bolt that penetrates the base plate and is embedded in the foundation.

JP-A-2005-61167

However, in the sound insulation wall post fixing structure as described above, the sound insulation panel is sandwiched between the fixing members and the base plate is fixed to the foundation on the front side and the back side. In particular, in the case of a sound insulation wall provided on the side of a road (elevated road) such as a bridge or an elevated road (viaduct), the load of the inspection work of the fixed members on the front side (road side) is small, but the inspection of the fixed members on the back side, which is the outside of the road, must be performed using an aerial work vehicle such as an overfence vehicle, and there is a problem that the work load is large. In addition, recently, it is necessary to periodically inspect elevated bridges, and there is an increasing demand for reducing the load on the inspection work.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to make it possible to easily inspect, from the front side, a fixing member for fixing a support in a sound insulation wall in which a sound insulation panel is provided between the supports.

In order to solve the above-mentioned problems, the sound insulation wall of the present invention comprises pillars erected at predetermined intervals and sound insulation panels provided between the pillars, the pillars having a base plate fixed to the upper surface of a foundation by a fixing member, the fixing member being embedded in the foundation by penetrating the base plate on the front side and the rear side. A configuration in which a part is provided was adopted.

That is, by providing an inspection part that opens to the front side of the sound insulation panel of the sound insulation wall and accommodates the head of the fixing member for the support on the back side, it is possible to easily check the state of the fixing member on the back side from the front side during inspection work.

Here, in the sound insulation panel, the inspection part is separated from parts other than the inspection part by a partition wall, and a sound absorbing material is stored inside the part other than the inspection part. It is possible to ensure sufficient sound insulation performance while preventing the sound absorbing material from falling into the inspection part.

Further, the sound insulation panel of the present invention is used for the sound insulation wall having the above configuration, and has a recess extending in the horizontal direction at the center of the back surface of the part other than the inspection part in the vertical direction, and the lower end of the recess can be configured to be the upper end of the bulging portion of the inspection part.

In addition, in the above sound insulation panel, if the upper wall portion and the back wall portion of the inspection portion are integrally formed with a plate member, and the plate member is fixed to the front side of the portion other than the inspection portion, compared to the case where the upper wall portion of the inspection portion is formed separately from the back wall portion and fixed to the front side and the back side of the portion other than the inspection portion, the number of fixing points is reduced, and the workability at the time of manufacturing the sound insulation panel is improved, and the appearance from the back side is improved.

In the present invention, as described above, the sound insulation panel of the sound insulation wall is provided with an inspection portion that opens to the front side and accommodates the head portion of the fixing member for the support column on the back side, so that the operator can easily check the state of the fixing member on the back side from the front side during inspection work.

Front view of the sound insulation panel of the embodiment (a) is a cross-sectional view along the IIa-IIa line in FIG. 1, and (b) is a cross-sectional view along the IIb-IIb line in FIG. The front view of the principal part of the sound insulation wall of embodiment Cross-sectional view along the IV-IV line in Fig. 3 Sectional view showing a modification of the sound insulation panel corresponding to FIG. Sectional view showing another modification of the sound insulation panel corresponding to FIG.

Hereinafter, embodiments of the present invention will be described based on the drawings. FIGS. 1 and 2(a) and (b) show a sound insulation panel 1 used for a sound insulation wall of an embodiment described later. The sound insulation panel 1 has a horizontally long rectangular shape as a whole, and includes a front plate 11 forming the front, a rear plate 12 forming the rear, side plates 13 forming both left and right sides, a thick plate-like sound absorbing material 14 housed in a space surrounded by the front plate 11, the rear plate 12 and the side plates 13 on both sides, and a plate-like sealing material 16 covering both side edges of the front plate 11. The front plate 11 is made of an aluminum alloy plate, the rear plate 12 is made of a laminated steel plate or plated steel plate, the side plate 13 is made of a plated steel plate, and the sound absorbing material 14 is made of polyester fiber. At lower portions on both sides of the sound insulation panel 1, there are formed inspection portions 17 which are open to the front side and have a portion of the back plate 12 as a back wall portion.

The front plate 11 has a large number of louver-shaped window holes in the front portion 11a other than the opening of the inspection portion 17, and has an upper plate portion 11b bent toward the back side at the upper end.

The back plate 12 has an upper portion of the back portion 12a extending parallel to the front portion 11a of the front plate 11, and a recess portion 12b extending in the lateral direction is provided in the center portion. This concave portion 12b is for improving the cross-sectional strength as a whole. The lower portion of the back surface portion 12a is formed to have a triangular cross-section so as to protrude toward the back surface side from the lower end of the recessed portion 12b. At the upper end of the back plate 12, an upper plate portion 12c is provided that is bent forward and connected to the upper plate portion 11b of the front plate 11 with a rivet 18 while overlapping with the upper plate portion 11b.

Although not shown, the side plate 13 is composed of a member forming a rectangular portion extending vertically on the side surface of the sound insulation panel 1 and a member forming a triangular portion expanding along the bulge of the rear plate 12 toward the rear side.

A sound absorbing material 14 is stored in a space surrounded by the front plate 11, the rear plate 12, and the side plate 13 which are connected and integrated with each other, except for the inspection part 17. - 特許庁The sound absorbing material 14 is formed integrally in an inverted convex shape when viewed from the front, but it is also possible to use a narrow and short rectangular shape placed above the inspection parts 17 on both sides and a wide and tall rectangular shape placed in the center between the two.

The inspection portion 17 has a rear wall portion that is part of the bulging portion of the rear portion 12a of the rear plate 12, a bottom wall portion that is part of the lower plate portion 12d of the rear plate 12, and an outer side wall portion that is part of the lower portion of the side plate 13. An upper partition wall 17a serving as an upper wall portion and a side partition wall 17b serving as an inner side wall portion are partitioned from portions other than the inspection portion 17, so that the sound absorbing material 14 stored inside the portion other than the inspection portion 17 does not drop into the inspection portion 17, ensuring sufficient sound insulation performance. The upper partition wall 17a is fixed to the front plate 11 and the rear plate 12 with rivets (not shown). A rectangular window 17c is opened in the bottom wall portion at a position closer to the outer side wall portion.

3 and 4 show the main part of the sound insulation wall of the embodiment using the sound insulation panel 1 having the above configuration. This sound insulation wall has pillars 3 erected at predetermined intervals on the upper surface of a foundation 2, and a plurality of sound insulation panels 1, 1' provided between the pillars 3. - 特許庁

The column 3 is made of H-shaped steel, and has a base plate 4 mounted on the upper surface of the base 2 attached to its lower end by welding. It is fixed on the foundation 2 together with the base plate 4 by anchor bolts 5 as fixing members embedded in the foundation 2 through the base plate 4 . A plurality of anchor bolts 5 (in this example, two bolts each) are arranged on each of the front side and the rear side of the sound insulation wall for each support column 3 . Two reinforcing ribs 6 are attached to the front side between the strut 3 and the base plate 4 by welding.

In the sound insulation panels 1 and 1', the sound insulation panel 1 shown in FIGS. 1 and 2 is arranged at the bottom between the columns 3, and the conventional sound insulation panels 1' are stacked on top of it. The conventional sound insulation panel 1' is the base of the sound insulation panel 1 of the embodiment arranged at the bottom, and does not have an inspection part like the sound insulation panel 1, does not have a bulging part on the rear surface of the rear plate, and is entirely housed with a sound absorbing material made of the same material as the sound insulation panel 1.

Here, each sound insulation panel 1, 1' has both side portions fitted into the U-shaped cross sections of the support columns 3 on both sides. The lowermost sound insulation panel 1 among them is in a state in which the head of the anchor bolt 5 on the rear side protruding from the upper surface of the base plate 4 and passing through the window 17c of the bottom wall portion of the inspection portion 17 is housed in the inspection portion 17.

This sound insulation wall has the above-described structure, and since the lowermost sound insulation panel 1 is provided with an inspection part 17 which opens to the front side and stores the head of the anchor bolt 5 on the back side, the condition of not only the anchor bolt 5 on the front side of the sound insulation wall but also the anchor bolt 5 on the back side can be easily inspected from the front side during inspection work.

Therefore, when this sound insulation wall is installed on the roadside part of the viaduct, the load of inspection work can be significantly reduced in the inspection of the viaduct, compared to the conventional case of inspecting the anchor bolts 5 on the back side using an aerial work vehicle.

Here, in the above-described embodiment, the lowermost sound insulation panel 1 has a shape in which the bulging portion of the back portion 12a of the back plate 12 forming the back wall portion of the inspection portion 17 bulges downward. However, as in the modification shown in FIG.

Further, as in the modification shown in FIG. 6, the upper wall and the rear wall of the inspection section 17 may be integrally formed with a plate member 17d that is separate from the rear plate 12. As shown in FIG. The plate member 17d is formed to have a semi-dome shape in cross section, and its upper end is fixed to the front plate 11. As shown in FIG. In this way, compared to the case where the upper partition wall 17a of the inspection part 17 is fixed to the front plate 11 and the rear plate 12 with rivets as in each example described above, the number of fixing points is reduced, and the workability when manufacturing the sound insulation panel 1 is improved, and the appearance from the back side is also improved.

It should be considered that the embodiments disclosed this time are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the scope of the claims rather than the meaning described above, and is intended to include all modifications within the scope and meaning equivalent to the scope of the claims.

For example, the rear surface of the sound insulation panel has a bulge over the entire longitudinal length in the embodiment, but it may be bulged only at the position of the inspection part.

In addition, a door for opening and closing the opening of the inspection portion of the sound insulation panel at the bottom can be provided, and the door can be closed except when inspecting the anchor bolts so that the appearance from the front side can be improved.

1, 1' Sound insulation panel 2 Foundation 3 Strut 4 Base plate 5 Anchor bolt (fixing member)
11 Front plate 12 Rear plate 12b Recess 13 Side plate 14 Sound absorbing material 17 Inspection part 17a Upper partition 17b Side partition 17c Window 17d Plate member

Claims (6)

A sound insulation wall comprising pillars erected at predetermined intervals and sound insulating panels provided between the pillars, the pillars having a base plate fixed to the upper surface of a foundation by a fixing member, the fixing members being embedded in the foundation by penetrating the base plate on the front side and the back side,
The sound insulation panel is provided with an inspection part that opens on the front side and has a bulging part on the back side that accommodates the head of the fixing member on the back side that projects from the upper surface of the base plate,
A sound insulation wall, wherein the inspection part has a rear wall part that is a part of a rear plate forming a rear surface of the sound insulation panel. 2. The sound insulation wall according to claim 1, wherein the inspection portion has a bottom wall portion with a window through which the fixing member on the back side passes. 3. The sound insulation wall according to claim 1 or 2, wherein the inspection part of the sound insulation panel is separated from parts other than the inspection part by a partition, and a sound absorbing material is stored inside the part other than the inspection part. A sound insulation panel used for the sound insulation wall according to any one of claims 1 to 3 . A recess extending in the horizontal direction is provided in the vertical center of the back surface of the portion other than the inspection portion, and the lower end of the recess is the upper end of the bulging portion provided in the inspection portion. The sound insulation panel according to claim 4. It comprises columns erected at predetermined intervals and sound insulation panels provided between the columns, the columns having a base plate fixed to the upper surface of the foundation by fixing members, and the fixing members are embedded in the foundation by penetrating the base plate on the front side and the back side,
The sound insulation panel used for a sound insulation wall is provided with an inspection part that is open on the front side and bulges on the back side so as to accommodate the head of the fixing member on the back side that protrudes from the upper surface of the base plate.
A sound insulation panel, wherein an upper wall portion and a back wall portion of the inspection portion are formed integrally with a plate member, and the plate member is fixed to a front side of a portion other than the inspection portion.

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