JPH10237822A - Corridor-equipped sound absorbing panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a corridor-equipped sound absorbing panel such that the number of processes for installation can be reduced and that it is easy to construct on-site. SOLUTION: A sound absorbing panel 16 includes a casing 22 made of a steel plate, inside which a sound absorbing material 24 is provided. A vertical holding band steel 26 and a horizontal holding band steel 28 that serve to prevent drop are mounted on the lower surface of the casing 22. The upper surface of the casing 22 is formed into a corridor plate part 30 that serves as an inspection corridor. Since the corridor plate part 30 serving as the inspection corridor is provided integrally with the sound absorbing panel 16, the number of processes for installation can be reduced. Also, since the sound absorbing panel 16 has the corridor plate part 30 with a cross-sectional shape obtained when a steel plate that is 1.6mm thick is curved plural times, it has high flexural rigidity irrespective of its light weight. Therefore, it is easy to install.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound-absorbing panel with a walkway provided on the backside of a girder of an elevated road, a railway or the like.

[0002]

2. Description of the Related Art There is a problem that the noise of a car traveling under an elevated highway echoes on the back side of a girder of the elevated highway.
To solve this problem, the back surface of the girders is sometimes covered with a sound absorbing panel.

[0003] Usually, a mounting member is suspended and fixed to the back side of a girder of an elevated highway or the like, and a sound absorbing panel is mounted to this mounting member with bolts or the like.

[0004]

On the underside of the girder of an elevated highway, there is a need for a walkable walkway for maintenance and inspection.

[0005] The sound absorbing panel is generally provided with a sound absorbing material such as glass wool inside a rectangular sound absorbing material holding frame made of a metal plate or the like, and cannot be used as a walkway as it is.

Therefore, conventionally, an iron grid called grating has been installed above the sound absorbing panel, so that an operator can walk on the grid.

However, the conventional method requires a process of installing a mounting member for mounting a sound absorbing panel, a process of mounting a sound absorbing panel, and a process of mounting a grating on site, and the number of processes is large, and the grating is heavy ( For example, there is a problem that a large amount of labor is required for installation, for example, about 20 kg per sheet).

The present invention has been made in consideration of the above-described circumstances, and has as its object to provide a sound-absorbing panel with walkways that can reduce the number of steps when installing a sound-absorbing panel and can be easily installed on site.

[0009]

According to the first aspect of the present invention, there is provided a sound-absorbing panel with a walkway attached to a back surface of a girder of an elevated building via a panel-mounting member.
A holding frame portion formed of a plate material and holding the sound absorbing material; and a sound absorbing material holding body having a walkway plate portion integrally provided on an upper portion of the holding frame portion and having a plurality of bent portions in a cross-sectional shape. It is characterized by:

[0010] The sound-absorbing panel with walkways according to claim 1 is
It is attached to a sound-absorbing material holding frame attached to the back of a girder of an elevated structure such as an expressway or an iron bridge with bolts or the like.

[0011] Since the noise of a vehicle or the like passing below the elevated building is absorbed by the sound absorbing material of the sound absorbing panel with walkways, the noise (reflected sound) reflected on the back side of the road girder and returned can be reduced.

In addition, since the sound absorbing panel with a walkway is provided with a walkway plate portion, a step of attaching a walkway such as grating when installing the sound absorbing panel can be omitted.

Further, since the corridor plate has a structure having a plurality of bent portions, it is possible to obtain a sufficient bending rigidity for use as a corridor while reducing the weight by using a thin steel plate or the like.

According to a second aspect of the present invention, in the sound absorbing panel with a corridor according to the first aspect, the bent portion includes a plurality of bottoms extending along a longitudinal direction of the corridor plate, the bottom and the bottom. And a plurality of tops located above the bottom and extending along the longitudinal direction of the corridor plate, and a plurality of ends integrally connecting the end of the bottom and the end of the top. And a wall portion.

In the sound absorbing panel with a walkway according to a second aspect, the bent portion is disposed between the bottom and the plurality of bottoms extending along the longitudinal direction of the walkway plate portion, and is located above the bottom. With a plurality of tops extending along the longitudinal direction of the corridor plate portion and a plurality of walls integrally connecting the bottom end and the top end. The strength in the longitudinal direction of the holder can be increased. Therefore, the thickness of the plate is reduced to reduce the weight, and
Strength can be ensured when the sound absorbing panel with walkways is supported at both ends in the longitudinal direction.

According to a third aspect of the present invention, in the sound absorbing panel with a walkway according to the second aspect, a width of the top portion is wider than a width of the bottom portion.

By making the width of the top of the corridor plate wider than the width of the bottom, the space formed between the sound absorbing material held by the holding frame and the corridor plate (air layer behind the sound absorbing material) Can have a large volume, and the sound absorbing effect can be increased.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION

[First Embodiment] The first embodiment of the sound absorbing panel with a walkway of the present invention.
1 will be described with reference to FIGS.

As shown in FIG. 1, a girder 1 of an elevated highway
A model steel 12 as a panel mounting member extending along the road width direction (the direction of the arrow W) is mounted on the lower surface of 0 via a bracket 14.

The steel die 12 of this embodiment is an H-shaped steel as shown in FIG. 2, and a sound absorbing panel 16 with a walkway is attached to the steel die 12.

As shown in FIG. 3, a sound absorbing panel 1 with a walkway is provided.
6 is provided with a box 22 composed of a main body 18 and a side plate 20. The main body 18 and the side plate 20 of the present embodiment are each formed of a steel plate having a thickness of 1.6 mm.

As shown in FIGS. 3 and 4, the main body 18
It has a corridor plate portion 30, a side plate portion 18B formed on both sides in the width direction of the corridor plate portion 30 and bent downward, and a hook portion 18C bent inward at a lower end of the side plate portion 18B.
It is formed by bending a sheet of steel.

The side plate portion 18B, the hook portion 18C, and the side plate 20 correspond to a holding frame portion of the present invention.

As shown in FIGS. 3, 4, and 5, the corridor plate portion 30 of the present embodiment has five narrow bottom portions 30A extending along the longitudinal direction of the box 22. An inclined portion 30B as a wall portion of the present invention that rises in an inclined manner is continuous with the width direction end portion, and upper ends of the inclined portion 30B and the inclined portion 30B are connected by a walking surface 30C as a top portion of the present invention. It has a trapezoidal cross section.

The dimensions of the box 22 of the present embodiment are as follows:
Is 995 mm, the total length L is 1990 mm, and the height H of the side plate portion 18B is 60 mm. The width W1 of the bottom 30A is 20 m.
m, the width W2 of the walking surface 30C is 205 mm, the width W3 of the inclined portion 30B is 10 mm, and the height H1 of the inclined portion 30B is 40 mm.

As shown in FIGS. 2 and 3, the side plate 20
It has a U-shaped cross section, and side plates 20 are inserted into inner portions of both ends in the longitudinal direction of the main body 18 so as to close both ends in the longitudinal direction of the main body 18.

The weight of the box 22 is 35 kg. As shown in FIGS. 2, 4, and 5, a rectangular sound absorbing material 24 having a constant thickness is inserted in the box 22.

A vertical holding steel strip 26 and a horizontal holding steel strip 28 for preventing the sound absorbing material 24 from bending and falling are attached to the lower surface of the box body 22 with rivets (not shown). In addition, as the sound absorbing material 24, for example, fibrite (trade name: manufactured by Bridgestone Corporation) can be used.

Near the four corners of the upper surface of the box 22, sound absorbing panel mounting brackets 32 are provided. The sound-absorbing panel mounting bracket 32 is connected to the reinforcing surface 34 provided on the back surface of the walking surface 30.
It is fixed with a bolt 36 and a nut 38 so as to sandwich C.

As shown in FIG. 2, the sound absorbing panel mounting bracket 32 is bent so that a gap t of a predetermined size is opened between the walking end 30C and the longitudinal end of the box 22.

As shown in FIG. 3, L-shaped drop prevention stoppers 40 are riveted at two diagonal positions on the upper surface of the box 22. As shown in FIG. A hole 42 is formed in the fall prevention stopper 40, and a wire (not shown) fixed to the mold steel 12, the bracket 14, or the like is inserted into the hole 42.

Next, the operation of the present embodiment will be described. As shown in FIG. 2, the sound-absorbing panel 16 with a walkway according to the present embodiment includes a shape steel 12 connected to a girder 10 of an elevated highway in a gap t between a sound-absorbing panel mounting bracket 32 and a walking surface 30C.
It is attached so as to sandwich the end of.

By inserting a wire fixed to the steel die 12 or the bracket 14 or the like into the hole 42 of the fall prevention stopper 40, the sound absorbing panel 16 with the walkway can be attached and detached when the sound absorbing panel 16 with the walkway is attached and detached. Fall can be prevented.

Furthermore, in the sound absorbing panel 16 with a walkway of the present embodiment, since the walkway plate portion 30 serving as an inspection walkway is provided integrally, a step of attaching a walkway such as grating is omitted, and the sound absorbing panel at the time of installing the sound absorbing panel is omitted. The number of steps can be reduced.

The main body 18 made of a steel plate has a high rigidity in spite of its light weight because the cross-sectional shape of the corridor plate portion 30 is plurally bent. Therefore, the weight of the entire sound absorbing panel 16 can be reduced, and the installation is easy.

In particular, the sound absorbing panel 1 with a walkway of the present embodiment.
In the sixth embodiment, since the cross section perpendicular to the longitudinal direction of the corridor plate portion 30 is bent, the strength in the longitudinal direction can be increased structurally. In addition, it is possible to secure the strength of the walkway while reducing the weight.

The noise of a car or the like passing below the elevated highway is reduced by the sound absorbing material 24 of the sound absorbing panel 16 with a walkway.
Therefore, noise (reflected sound) reflected on the back of the road and returned can be reduced.

Further, the sound absorbing panel 1 with a walkway according to the present embodiment.
In 6, a space is formed above the sound absorbing material 24 between the walking surface 30 </ b> C, and by providing this space, the sound absorbing effect of the sound absorbing panel 16 with a walkway is improved. further,
In the sound absorbing panel 16 with walkways of the present embodiment, the bottom 30A
Because the width W2 of the walking surface 30C is larger than the width W1 of
The volume of the space between the sound absorbing material 24 and the walking surface 30C can be increased, and a large sound absorbing effect can be obtained.

The bending rigidity can be further improved by increasing the number of the inclined portions 30B or by further increasing the height H1 of the inclined portions 30B.

In the present embodiment, the sound absorbing panel 16 with a walkway is supported at both ends in the longitudinal direction, but may be supported at both ends in the width direction. However, when supporting the sound absorbing panel 16 with a walkway at both ends in the width direction, the bottom 30A, the walking surface 30
C and the sound absorbing panel 1 with a walkway in the longitudinal direction of the inclined portion 30B.
6 along the width direction to increase the bending rigidity in the width direction. [Second Embodiment] The second embodiment of the sound absorbing panel with a walkway of the present invention.
The embodiment will be described with reference to FIGS. The same components as those in the above-described embodiment are denoted by the same reference numerals, and description thereof will be omitted.

As shown in FIG. 6, the sound absorbing material 46 of the sound absorbing panel 44 with walkways according to the present embodiment has an uneven surface formed on the lower surface, so that the appearance when viewed from below is improved.

As shown in FIGS. 7 and 8, an L-shaped side plate 48 is provided on both inner sides in the longitudinal direction of the main body 18.
Are fixed to the flat plate portion 18A with rivets 49.

As shown in FIGS. 6 to 9, a vertical holding steel strip 50 for preventing the sound absorbing material 46 from bending and falling is disposed on the lower surface of the box 22. In this vertical holding steel strip 50,
As shown in FIG. 9, five bolt holes 52 are formed in the bolt holes 52 inserted from below.
Has a tip protruding above the bottom 30A, and a nut 56 screwed to the protruding tip portion makes the vertical holding steel strip 50 a.
Is supported.

The bolt 54 is composed of the vertical holding steel strip 50 and the bottom 30.
A is inserted into a pipe-shaped spacer 58 disposed between the vertical holding steel strip 50 and the bottom 30A by the spacer 58.

The operation and effect of this embodiment are the same as those of the first embodiment. The cross-sectional shape of the corridor plate portion 30 is not limited to the shape of the above-described embodiment, and may be a corrugated plate shape, since the cross-sectional shape of the corridor plate portion 30 is not limited to the shape of the above-described embodiment because the cross-sectional shape is increased if the cross-sectional unevenness shape extends along a certain direction. .

In the above embodiment, the box is formed of a steel plate. However, it is needless to say that the box may be formed of a metal plate other than the steel plate, an FRP plate, or the like.

[0047]

As described above, the sound-absorbing panel with walkways according to the first aspect has the above-described configuration, so that the number of steps at the time of installation can be reduced and the installation can be easily performed at the site.
It has an excellent effect.

The sound absorbing panel with a corridor according to the second aspect has the above-described structure, so that the thickness of the plate is reduced to reduce the weight, and that the sound absorbing panel with a corridor is supported at both ends in the longitudinal direction. It has an excellent effect that strength can be secured.

According to the third aspect of the present invention, the sound absorbing panel with a walkway has the above-described structure. Therefore, a space formed between the sound absorbing material held by the holding frame portion and the walkway plate portion (the air layer behind the sound absorbing material).
Has an excellent effect that a large volume can be obtained and the sound absorbing effect can be increased.

[Brief description of the drawings]

FIG. 1 is a sectional view of an elevated highway.

FIG. 2 is an enlarged view of a mounting portion of a section steel of the sound absorbing panel with walkways according to the first embodiment.

FIG. 3 is an exploded perspective view of the sound absorbing panel with walkways according to the first embodiment.

FIG. 4 is a longitudinal side view of the sound absorbing panel with walkways according to the first embodiment.

FIG. 5 is a plan view in which a part of the sound absorbing panel with a walkway according to the first embodiment is partially broken.

FIG. 6 is a longitudinal side view of a sound absorbing panel with walkways according to a second embodiment.

FIG. 7 is an enlarged view of a mounting portion of a shape steel of a sound absorbing panel with walkways according to a second embodiment.

FIG. 8 is a plan view in which a part of a sound absorbing panel with a walkway according to a second embodiment is partially broken.

FIG. 9 is a sectional view taken along line 9-9 of FIG. 8;

[Explanation of symbols]

 12 type steel (panel mounting member) 16 sound absorbing panel with walkway 18B side plate (holding frame) 18C hook (holding frame) 20 side plate (holding frame) 24 sound absorbing material 30 stairway plate 30A bottom 30B slope (wall) 30C Walking surface (top) 44 Sound absorbing panel with walkway 46 Sound absorbing material 48 Side plate (holding frame)

Claims (3)

[Claims] 1. A sound-absorbing panel with a walkway mounted on a back surface of a girder of an elevated building via a panel mounting member, comprising: a sound-absorbing material; a plate member; and a holding frame portion for holding the sound-absorbing material; A sound-absorbing material holder having a corridor plate portion integrally provided on an upper portion of a holding frame portion and having a plurality of bent portions in a cross-sectional shape. 2. The method according to claim 1, wherein the bent portion includes a plurality of bottoms extending along a longitudinal direction of the walkway plate portion, and is disposed between the bottom portions and the bottom portion, is located above the bottom portion, and is located above the walkway plate portion. And a plurality of tops extending along the longitudinal direction of the bottom, and a plurality of walls integrally connecting an end of the bottom and an end of the top. The described sound-absorbing panel with walkway. 3. The sound-absorbing panel with walkways according to claim 2, wherein the width of the top portion is wider than the width of the bottom portion.