JP2014077254A - Structure for attaching acoustical board to concrete wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and reliably attach an acoustical board 4 to a concrete wall 3.SOLUTION: A plurality of vertical furring strips 7 are fixed at intervals to a concrete wall 3, and an elastic hook 9 made of a leaf spring is provided on a front surface of each of the vertical furring strips 7. An acoustical board 4 comprises an engagement part 18 that is engaged with the elastic hook 9 from above. The engagement part 18 of the acoustical board 4 is elastically held in a sandwiched state between the front surface of the vertical furring strips 7 and the elastic hook 9.

Description

  The present invention relates to a sound absorbing plate mounting structure for a concrete wall.

  Regarding a sound absorbing plate mounting structure for a concrete wall, Patent Document 1 describes an example of mounting a sound absorbing plate on a road side wall. In this example, a downward hook is provided on the sound absorbing plate, and the downward hook of the sound absorbing plate is hung on the angle steel fixed to the road side wall. Further, in this example, screw feed means using bolts and nuts for press-contacting the angle steel flange and hook are provided, and the sound-absorbing plate is prevented from wobbling by the above-mentioned press-contact by this screw feed. .

  Patent Document 2 describes that a substantially inverted V-shaped clip is fixed to a sound absorbing plate, and this clip is hung on an angle steel flange fixed to a road side wall or the like. In this example, the wobbling of the sound absorbing plate is prevented by holding the flange with a clip.

  Patent Document 3 describes that a sound absorbing plate is fitted between flanges of a pillar made of H-shaped steel, and the sound absorbing plate is pressed against one flange by a leaf spring. The leaf spring has an intermediate portion bent in a U shape, and a lower end portion thereof is fixed to the sound absorbing plate. The plate spring is fitted together with the sound absorbing plate between the flanges of the column, and the bent portion of the plate spring is pressed against one flange of the column. By this pressure contact, the sound absorbing plate is prevented from wobbling.

JP 2000-80614 A Japanese Patent Laid-Open No. 9-21195 Japanese Patent Laid-Open No. 9-3834

  The sound absorbing plate mounting structure described in Patent Document 1 requires screw feeding means in addition to the hooks to prevent the sound absorbing plate from wobbling, and the structure becomes complicated, and a large number of work steps are required for mounting the sound absorbing plate to the concrete wall. There is a disagreement. In the case of the sound absorbing plate mounting structure described in Patent Document 2, it is easy to attach the sound absorbing plate to the concrete wall, but it is difficult to increase the holding force of the sound absorbing plate with the inverted V-shaped clip. Moreover, the sound-absorbing plate mounting structure described in Patent Document 3 relates to the mounting of the sound-absorbing plate to the cross section H-shaped support column, and cannot be applied to mounting to a concrete wall.

  Therefore, the present invention makes it possible to easily and reliably attach the sound absorbing plate to a concrete wall such as a road or a railway side wall or a tunnel wall.

  In order to solve the above-mentioned problems, the present invention employs a vertical trunk edge and an elastic hook for attaching a sound absorbing plate to a concrete wall.

In other words, the sound absorber mounting structure to the concrete wall presented here is
A plurality of vertical torso edges are fixed to the concrete wall at intervals,
An elastic hook made of a leaf spring is provided on the front surface of each vertical trunk edge,
The sound absorbing plate includes an engaging portion that is hung from above on the elastic hook on the back of the sound absorbing plate main body,
The engaging portion of the sound absorbing plate is elastically sandwiched between the front surface of the vertical body edge and the elastic hook.

  With such an attachment structure, since the sound absorbing plate can be attached to the concrete wall simply by hooking the engaging portion of the sound absorbing plate on the elastic hook on the vertical trunk edge, the attachment / detachment thereof becomes easy. In addition, since the engaging portion of the sound absorbing plate is elastically sandwiched between the front surface of the longitudinal body edge and the elastic hook, the mounting stability of the sound absorbing plate is enhanced. In addition, since the elastic hook is provided on the longitudinal body edge, it is not necessary to directly attach the elastic hook to the concrete wall. In the field, the sound absorbing plate can be attached to the concrete wall by fixing the vertical trunk edge to the concrete wall and hanging the sound absorbing plate on the elastic hook, thereby facilitating the field work.

  In a preferred embodiment of the present invention, the vertical body edge has a cut-and-raised portion that is cut and raised from the front plate portion to the front side and extends obliquely upward, and the elastic hook has a lower end portion of the front plate portion. It is fixed below the cut-and-raised part on the back surface, and overlaps the cut-and-raised part and extends upward.

  Thereby, the cut-and-raised part of the vertical trunk edge supports the sound absorbing plate together with the elastic hook. Therefore, the support strength of the sound absorbing plate by the longitudinal body edge is increased, and the mounting stability of the sound absorbing plate is increased.

  In a preferred embodiment, the elastic hook includes an overlapping portion that extends forward and obliquely upward over the cut and raised portion, an intermediate portion that extends backward and obliquely upward from the overlapping portion through the first bent portion, A front portion extending obliquely upward and forward from the intermediate portion through the second bent portion, and the engaging portion of the sound absorbing plate is elastically disposed between the vertical trunk edge and the second bent portion of the elastic hook. It is pinched.

  Thus, when the sound absorbing plate is hung on the elastic hook, the tip portion of the elastic hook serves as a guide for guiding the engaging portion of the sound absorbing plate between the elastic hook and the front surface of the vertical trunk edge, and the workability is improved. Further, since the bent portion of the elastic hook presses the engaging portion of the sound absorbing plate against the front surface of the longitudinal body edge, a high clamping force is obtained, which is advantageous for holding the sound absorbing plate.

  In a preferred embodiment, the engaging portion of the sound absorbing plate has a plate shape, and the distance in the sound absorbing plate thickness direction between the first bent portion and the second bent portion in a free state of the elastic hook is It is larger than the interval between the plate-like engaging portion and the sound absorbing plate main body. Thus, when the engaging portion of the sound absorbing plate is hooked on the elastic hook, the elastic hook and the cut and raised portion are elastically deformed, and the tip of the first bent portion or the cut and raised portion is elastically applied to the sound absorbing plate body. In contact with each other, and the second bent portion is in elastic contact with the longitudinal body edge. Therefore, the sound absorbing plate is firmly held on the vertical body edge, and the mounting stability of the sound absorbing plate is enhanced.

  Moreover, in preferable embodiment, the space | interval adjustment means which adjusts the space | interval of the said concrete wall and the said vertical trunk edge is provided. As a result, even if the concrete wall has some irregularities, it is possible to make the front surface of the vertical trunk edge vertically or in a desired inclined state, and it becomes easy to align the front surfaces of a plurality of vertical trunk edges, and sound absorption This is advantageous for stable plate mounting.

  As described above, according to the present invention, a plurality of vertical body edges are fixed to the concrete wall at intervals, elastic hooks are provided on the front surfaces of the respective vertical body edges, and the engaging portions of the sound absorbing plates are used as elastic hooks. Since it is hung from above and elastically sandwiched between the front surface of the vertical trunk edge and the elastic hook, the sound absorbing plate can be easily and firmly attached to the concrete wall, and the field work is also facilitated. .

It is sectional drawing which shows the sound-absorbing-plate attachment structure of the concrete wall based on this invention. It is a partially omitted plan view showing the structure. It is sectional drawing which abbreviate | omits and shows a part of the same structure. It is a disassembled perspective view which shows the structure. It is sectional drawing which shows the attachment state to the concrete wall of the vertical trunk edge of the structure.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. The following description of the preferred embodiments is merely exemplary in nature and is not intended to limit the invention, its application, or its use.

  In FIG. 1, 1 is a roadway of a road bridge, 2 is a ground cover, and 3 is a concrete wall (handrail). The vertical wall edge 7 is attached to the concrete wall 3, and the sound absorbing plate 4 is attached to the vertical wall edge 7.

<Configuration of each element>
The concrete wall 3 is formed by stacking a plurality of concrete plates 3a. That is, as shown in FIG. 2, pillars 5 having an H-shaped cross section are erected on the ground cover 2 at intervals in the longitudinal direction of the road bridge. Each concrete plate 3 a is fitted in the U-shaped groove of the column 5 adjacent to each other at both ends, and is held by the column 5 with the spring material 6. A plurality of vertical body edges 7 are fixed to the concrete wall 3 with anchor bolts 8 at intervals in the longitudinal direction of the road bridge. Then, as shown in FIG. 3, the sound absorbing plate 4 is held on the vertical trunk edge 7 using an elastic hook 9 made of a spring plate provided on the vertical trunk edge 7.

  More specifically, as shown in FIGS. 4 and 5, lip channel steel is used for the longitudinal body edge 7. The upper part and the lower part on the lip side of the vertical trunk edge 7 are fixed to anchor bolts 8 protruding from the concrete wall 3.

  That is, the perforated plate 11 is fixed to the vertical body edge 7 so as to straddle the lips on both sides. A nut 12 with a circular hook is screwed to the anchor bolt 8, and a perforated plate 11 of the vertical trunk edge 7 is fitted on the anchor bolt 8. Then, a U-shaped hooked nut 13 having a leg protruding forward is screwed into the anchor bolt 8, and the plate 11 is sandwiched between the hook of the round hooked nut 12 and the leg of the U-shaped hooked nut 13. ing. A U-shaped hooked nut 13 and a tool loading opening 14 are opened in the front plate (web) of the vertical barrel edge 7.

  Here, the interval between the concrete wall 3 and the vertical trunk edge 7 is determined by the screwing position of the circular hooked nut 12 on the anchor bolt 8. Therefore, the anchor bolt 8 and the circular hooked nut 12 constitute a distance adjusting means for adjusting the distance between the concrete wall 3 and the vertical trunk edge 7.

  The vertical trunk edge 7 has a cut-and-raised portion 15 for providing the elastic hook 9 at the upper end portion and the middle portion of the front plate. The cut-and-raised portion 15 in this example is a rectangular shape that is raised forward by placing a U-shaped cut in the front plate, and extends obliquely upward.

  The lower end of the elastic hook 9 is inserted into the inside of the vertical trunk edge 7 through the hole of the cut-and-raised portion 15, and is screwed to a lower portion than the cut-and-raised portion 15 on the back surface of the front plate. As shown in FIG. 3, the elastic hook 9 overlaps the cut and raised portion 15 and extends forward and obliquely upward, and extends backward and obliquely upward from the overlap portion 9a via the first bent portion 9b. It has an intermediate portion 9c and a tip portion 9e extending forward and obliquely upward from the intermediate portion 9c via the second bent portion 9d.

  An attachment hole 17 for attaching the sound absorbing plate receiver 16 is provided at the lower end portion of the front plate of the vertical trunk edge 7. The sound absorbing plate receiver 16 is inserted into the vertical trunk edge 7 from the receiving portion 16a that receives the sound absorbing plate 4, the flange 16b that contacts the front surface of the sound absorbing plate 4, and the mounting hole 17, and the rear surface of the front plate of the vertical trunk edge 7 And a mounting portion 16c that is screwed to the head.

  On the other hand, the sound absorbing plate 4 is provided with a plate-like engaging portion 18 that is hung on the elastic hook 9 from above on the back side of the upper end portion thereof. The distance between the engaging portion 18 and the back surface of the sound absorbing plate main body 4a is smaller than the distance in the sound absorbing plate thickness direction between the first bent portion 9b and the second bent portion 9d in the free state of the elastic hook 9. Further, the upper end surface and the lower end surface of the sound absorbing plate 4 are provided with a concave portion 19 and a convex portion 20 that fit into each other when the sound absorbing plate 4 is stacked in a standing state.

<Mounting the sound absorbing plate>
The elastic hook 9 and the sound absorbing plate receiver 16 are assembled to the vertical trunk edge 7. This work can be performed at a construction site or a factory.

  Anchor bolts 8 are driven into the concrete wall 3 at the construction site. A circular hooked nut 12 is screwed onto the anchor bolt 8, and the perforated plate 11 of the vertical trunk edge 7 is fitted onto the anchor bolt 8 from above. Next, the U-shaped hooked nut 13 is inserted from the insertion port 14 of the vertical trunk edge 7 and screwed into the anchor bolt 8, and the plate is formed by the hook of the round hooked nut 12 and the leg of the U-shaped hooked nut 13. 11 is sandwiched. Thereby, the vertical trunk edge 7 will be in the state attached to the concrete wall 3 (refer FIG. 5).

  By adjusting the screwing position of the circular hooked nut 12 to the anchor bolt 8, the distance between the concrete wall 3 and the vertical trunk edge 7 is adjusted. That is, the front surfaces of the vertical body edges 7 are made vertical or in a desired inclined state, and the front surfaces of the vertical body edges 7 are aligned.

  As shown in FIG. 3, the engaging portion 18 of the sound absorbing plate 4 is hung on the elastic hook 9 on the lower side of the vertical trunk edge 7 from above. At this time, the tip portion 9 e of the elastic hook 9 serves as a guide for guiding the engaging portion 18 of the sound absorbing plate 4 between the front surface of the vertical trunk edge 7 and the elastic hook 9. The sound absorbing plate 4 is placed on the sound absorbing plate receiver 16. Then, the engaging portion 18 of the next sound absorbing plate 4 is hung on the elastic hook 9 on the upper side of the vertical trunk edge 7 from above, and this sound absorbing plate 4 is placed on the lower sound absorbing plate 4. In the upper and lower sound absorbing plates 4, the concave portion 19 on the upper end surface and the convex portion 20 on the lower end surface fit each other. Thereafter, a lift prevention plate 21 for preventing the sound absorbing plate 4 from rising is fixed to the upper end surface of the vertical trunk edge 7.

  In the mounting structure, the elastic hook 9 has a distance between the first bent portion 9b and the second bent portion 9d in the thickness direction of the sound absorbing plate from the distance between the back surface of the sound absorbing plate body 4a of the sound absorbing plate 4 and the engaging portion 18. Therefore, it is elastically deformed together with the cut and raised portion 15. That is, the tip of the first bent portion 9b or the cut-and-raised portion 15 elastically contacts the sound absorbing plate body 4a, and the second bent portion 9d elastically contacts the front surface of the vertical trunk edge 7 (see FIG. 3). In other words, the engaging portion 18 of the sound absorbing plate 4 is elastically held on the vertical trunk edge 7 by the elastic hook 9 and the cut and raised portion 15. Then, the forward falling load of the sound absorbing plate 4 is supported not only by the elastic hook 9 but also by the cut-and-raised portion 15 of the vertical trunk edge 7. Therefore, the wobbling of the sound absorbing plate 4 can be surely avoided, and the mounting state of the sound absorbing plate 4 is stabilized.

<Others>
In the above embodiment, the two sound absorbing plates 4 are stacked one above the other. However, the number of the elastic hooks 9 may be increased and three or more sound absorbing plates 4 may be stacked.

  The shape of the elastic hook 9 is not limited to the above embodiment as long as the engaging portion 18 of the sound absorbing plate 4 can be elastically pressed against the front surface of the vertical trunk edge 7.

  Further, the cut-and-raised portion 15 is not limited to the rectangular shape of the above-described embodiment, but may be an appropriate shape such as a semicircle or a triangle.

  Furthermore, the sound absorbing plate mounting structure of the present invention can be applied not only to road side walls but also to railway side walls, building walls, and the like.

DESCRIPTION OF SYMBOLS 1 Roadway 2 Ground cover 3 Concrete wall 4 Sound absorption board 5 Strut 7 Vertical trunk edge 9 Elastic hook 9a Overlapping part 9b 1st bending part 9c Middle part 9d 2nd bending part 9e Tip part 12 Circular nut with a flange (space | interval adjustment means)
15 Cut and raised part

Claims (5)

A structure that attaches a sound absorbing plate to a concrete wall,
A plurality of vertical torso edges are fixed to the concrete wall at intervals,
An elastic hook made of a leaf spring is provided on the front surface of each vertical trunk edge,
The sound absorbing plate includes an engaging portion that is hung from above on the elastic hook on the back of the sound absorbing plate main body,
A concrete-wall sound-absorbing plate mounting structure, wherein an engaging portion of the sound-absorbing plate is elastically sandwiched between a front surface of the vertical trunk edge and the elastic hook. In claim 1,
The vertical trunk edge has a cut-and-raised portion extending obliquely upward cut and raised from the front plate portion to the front side,
The elastic hook has a lower end fixed to a lower side than the cut-and-raised portion on the back surface of the front plate portion, and overlaps the cut-and-raised portion and extends upward. Concrete wall sound absorbing plate mounting structure. In claim 2,
The elastic hook includes an overlapping portion that overlaps the cut and raised portion and extends forward and obliquely upward, an intermediate portion that extends from the overlapping portion through the first bent portion and rearward and obliquely upward, and a second bent portion from the intermediate portion. And a tip portion extending forward and obliquely upward via
A concrete-wall sound-absorbing plate mounting structure, wherein an engaging portion of the sound-absorbing plate is elastically sandwiched between the vertical body edge and the second bent portion of the elastic hook. In claim 3,
The engaging portion of the sound absorbing plate has a plate shape,
The distance in the sound absorbing plate thickness direction between the first bent portion and the second bent portion in the free state of the elastic hook is greater than the distance between the plate-like engaging portion and the sound absorbing plate main body,
When the engaging portion of the sound absorbing plate is hooked on the elastic hook, the elastic hook and the cut-and-raised portion are elastically deformed, and the tip of the first bent portion or the cut-raised portion is elastic to the sound-absorbing plate main body. A sound absorbing plate mounting structure for a concrete wall, wherein the second bent portion is in elastic contact with the longitudinal body edge. In any one of Claims 1 thru | or 4,
A sound-absorbing plate mounting structure for a concrete wall, comprising a space adjusting means for adjusting a space between the concrete wall and the vertical body edge.

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