JPH09279711A - Tunnel sound absorption interior panel mounting structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sound absorption interior panel mounting structure which is excellent in appearance while maintaining sound absorbing performance. SOLUTION: This tunnel sound absorption interior panel mounting structure mounts a tunnel sound absorption interior panel 4 on an interior absorbing panel mounting bracket 3 anchored to a tunnel wall surface 2, the panel 4 having sound material 8 inside its rectangular frame and having surface panels 5 mounted on its front, each of the panels 5 having a number of holes therein. In this case, the plurality of surface panels 5 on the tunnel acoustical panel 4 are attached by fasteners to the side of the frame at predetermined intervals to one another with their upper and lower ends curved. The tunnel sound absorption interior panels 4 are mounted on the interior panel mounting brackets 3 anchored to the tunnel wall surface 2, in such a way that the surface panels 5 of the adjacent tunnel sound absorption interior panels 4 are placed at a predetermined interval to each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound absorbing interior plate mounting structure for a tunnel, which is used on the side wall surface of the tunnel for both the appearance of the tunnel such as a road and noise control.

[0002]

2. Description of the Related Art Since the inner wall of a tunnel such as a road is usually covered with a rigid body such as concrete, noise generated from a vehicle traveling in the tunnel is propagated with almost no attenuation. It has the characteristic of Therefore, in the vicinity of the tunnel entrance, the noise level radiated from the tunnel is not easily attenuated and is affected by the noise for a long time. Also, pedestrians walking in the tunnel will be significantly damaged by noise for the same reason.

In particular, since the number of tunnel constructions in urban areas has increased and the traffic volume has increased in recent years, demands for noise countermeasures for tunnels are increasing. In order to meet this demand, there are many examples of tunnel construction in which noise level is reduced by installing sound absorbing equipment on the wall surface or ceiling. The sound absorbing equipment used in the tunnel includes, as will be described later, a sound absorbing material such as glass wool or the like arranged inside or on the back surface of a formwork or surface panel or a tile having a slit portion, or a porous ceramic. A body, a sintered body of metal powder or fiber, or the like is used.

Among them, from the viewpoint of sound absorption efficiency and price, sound absorbing equipment having a structure in which glass wool is put in a metal mold and the surface is covered with expanded metal or punching metal is general. As a method of installing these sound absorbing equipment, a sound absorbing panel that doubles as a tunnel interior plate is attached to the wall surface of the tunnel, and if necessary, a box-type or comb-shaped or box-type sound absorber having a wedge-shaped cross section is attached to the ceiling. Especially, when importance is attached to noise countermeasures near the entrance, sound absorbing equipment may be attached to the entire surface of the tunnel over several tens to several hundreds of meters from the entrance.

For example, FIG. 5 is a structure for mounting a sound absorbing interior plate for a tunnel in which a conventional punching metal is used for a surface panel, and FIG. 6 is an enlarged view of a mounting portion on a wall surface thereof. The conventional sound absorbing interior plate 50 shown in FIGS. 5 and 6 has a mounting bracket 53 fixed to a tunnel wall surface 51 with anchor bolts 52.
Is installed using the bolt 54 for mounting the sound absorbing interior plate. The front panel 55 is the frame body 5 of the sound absorbing interior plate 50.
It is fixed to the No. 6 with a rivet 57. For this reason, the wall mounting bracket 53, the anchor bolt 52, the sound absorbing interior plate mounting bolt 54, the front panel mounting rivet 57, and the like are exposed, and can be seen by a driver or a pedestrian, which impairs the appearance. It is lacking.

[0006]

The sound absorbing equipment described above has excellent sound absorbing performance, but is a rugged and poorly designed panel or sound absorbing structure, and the size of each sound absorbing equipment is large. Many of them are large and often cannot be used for applications where importance is placed on aesthetics inside the tunnel. Furthermore, as a method of installing these sound absorbing equipment, it is common to fix them directly to the wall with anchor bolts or bolt them to the furrow installed on the wall as described above. Since the mounting bolts and the anchor bolts between the panels can be seen, the driver's eyes tend to get tired and the design is often poor. In addition, the same applies to expanded metal and punching metal used for the sound absorbing panel itself, which has a structure in which the bolts and rivets for fixing to the frame can be seen, which is unaesthetic. Furthermore, when a porous body or a sintered body is used as sound absorbing equipment, it is significantly contaminated by exhaust gas emitted from a vehicle traveling in the tunnel, tire slag, mud and dust brought in by the vehicle, and even if washed. The drawback is that the initial appearance cannot be restored.

An object of the present invention is to solve the above problems and to provide a sound absorbing interior plate mounting structure for a tunnel which is excellent in appearance while maintaining sound absorbing performance.

[0008]

The present invention has the following means to solve the above problems.

The sound absorbing interior plate mounting structure for a tunnel according to claim 1 of the present invention is a tunnel having a sound absorbing material inside a rectangular frame and a front surface panel having a large number of openings on the front surface. In a structure for mounting a sound absorbing interior plate for a tunnel, in which a sound absorbing interior plate for a vehicle is mounted on an interior plate mounting bracket fixed to a tunnel wall surface, a plurality of surface panels of the sound absorbing interior plate for a tunnel are provided at a predetermined interval in the frame body. , The upper and lower ends of which are respectively bent and attached to the side surfaces of the frame by fasteners, and the sound absorbing interior plate for a tunnel has surfaces of adjacent surface panels of the sound absorbing interior plate for a tunnel. It is characterized in that it is attached to an interior plate mounting bracket fixed to the wall surface of the tunnel so as to be arranged at a predetermined distance from the panel.

In the sound absorbing interior plate mounting structure for a tunnel according to claim 2 of the present invention, the interior plate mounting bracket fixed to the tunnel wall surface is fixed to the tunnel wall surface along the tunnel wall surface at a predetermined interval. Grooves are provided in the longitudinal direction on both sides of the mounting bracket, and the edges of the sound absorbing interior plate for tunnel are fitted in the grooves so that the edges of the front panel are located in front of the interior plate mounting bracket. It is characterized by

In the sound absorbing interior plate mounting structure for a tunnel according to claim 3 of the present invention, the surface of the surface panel is coated with an inorganic coating or organic-inorganic composite coating containing alkoxysilane or polyorganosiloxane as a main component. Is characterized by.

According to the sound absorbing interior plate mounting structure for a tunnel of claim 1 of the present invention, the sound absorbing interior plate for a tunnel mounted on the interior plate mounting bracket fixed to the wall surface of the tunnel has a plurality of surface panels for sound absorbing for the tunnel. It is attached to the frame body of the interior plate at a predetermined interval. Further, each surface panel of the sound absorbing interior plate for a tunnel is also attached to the interior plate mounting bracket with a predetermined distance from each surface panel of the adjacent sound absorbing interior plate for a tunnel. Therefore, since all the adjacent front surface panels have joints at predetermined intervals, that is, the front surface panels are joints, the aesthetic sense is excellent. Further, since each surface panel is attached to the side surface of the frame of the sound absorbing interior plate for a tunnel by bending its upper end and lower end, for example, with fasteners such as bolts, the fasteners such as bolts are attached to the surface. Since it is not exposed to, it does not spoil the beauty.

According to the sound absorbing interior plate mounting structure for a tunnel of claim 2 of the present invention, the sound absorbing interior plate for a tunnel is fitted into the longitudinal groove on the side surface of the interior plate mounting bracket fixed along the wall surface of the tunnel. It is easy to install because it is attached, and it does not spoil the appearance because it does not use fasteners such as bolts. Also, on the front surface of the edge of the sound absorbing interior plate for a tunnel fitted in the longitudinal groove on the side surface of the interior plate mounting bracket, the front panel edge should be positioned so that the edge of the front panel is located in front of the interior plate mounting bracket. Since the edges are arranged with a predetermined interval, not only the interior plate mounting bracket itself is exposed and invisible, but also the edges between the front panels serve as joints, which is excellent in aesthetic sense. It has become a thing.

According to the sound absorbing interior plate mounting structure for a tunnel of claim 3 of the present invention, the surface of the surface panel is coated with an inorganic coating material or an organic-inorganic composite coating material containing alkoxysilane or polyorganosiloxane as a main component. ,
Good surface reflectance and durability are provided, and it becomes possible to maintain the aesthetic environment in the tunnel for a long time. Also,
Even if the surface of the vehicle is contaminated by exhaust gas or the like, it can be easily restored to its initial state by washing with water, and has good cleaning recovery properties without being damaged by a cleaning tool such as a brush.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION A sound absorbing interior plate mounting structure for a tunnel according to the present invention will be described below in more detail with reference to FIGS. FIG. 1 is a front view showing an embodiment of a sound absorbing interior plate mounting structure for a tunnel. The sound absorbing interior plate mounting structure 1 for a tunnel shown in FIG.
An inner plate mounting bracket 3 fixed along a predetermined distance at a predetermined distance,
Sound absorbing interior plate 4 for tunnel fixed to interior plate mounting bracket 3
And a plurality of surface panels 5 attached to the front surface of the sound absorbing interior plate 4 for the tunnel.

The interior plate mounting member 3 is an elongated body having a cross section of substantially π as shown in FIG. 2, and has grooves 3a in the longitudinal direction of both side surfaces thereof. This interior plate mounting bracket 3 is attached to the tunnel wall surface 2 by the anchor bolt 6, for example, 3400 mm.
It is fixed at intervals. Interior plate mounting brackets 3 and 3 above
A sound absorbing interior plate 4 for a tunnel shown in FIG. 3 is attached between them. On the front surface of the sound absorbing interior plate 4 for a tunnel, a plurality of surface panels 5 are arranged at predetermined intervals, in the present embodiment, 4
The front panels 5 are attached at intervals of 10 mm. The size of one front surface of the front panel 5 is 300 mm × 590 mm in the present embodiment.

The front panel 5 is provided with a large number of through holes 5a as shown in FIG. As shown in FIG. 4, the front panel 5 has its upper and lower ends bent at right angles, and is attached to the side surfaces of the rectangular frame 4a of the sound absorbing interior plate 4 for tunnels by fasteners such as rivets 7. The size of the frame body 4a is 300 mm × 2 in this embodiment.
It is 390 mm. The number of front surface panels 5 attached to the frame body 4a is determined in consideration of the size of the frame body 4a in consideration of productivity and workability and the size of the front surface panel 5 determined by designability. There is no particular limitation on the number of the surface panels 5 to be attached, but it is most efficient to attach 2 to 10 surface panels 5 to the frame body 4a.

As a method of attaching a plurality of front panel 5 to the frame body 4a with a predetermined space, a method in which the upper and lower ends of the front panel 5 are bent at right angles to the frame body 4a and fixed with rivets 7 is used. However, there is no particular limitation as long as the structure is such that the mounting portion cannot be seen directly from the surface. Further, in this case, by further inserting a spacer serving as a joint between the adjacent front surface panels 5 or by notching a part of the frame body 4a in accordance with the front surface panel 5 to improve the designability. You can

As shown in FIGS. 2 and 4, a sound absorbing material 8 is housed inside the frame 4a of the sound absorbing interior plate 4 for the tunnel. Examples of the sound absorbing material 8 include fibrous bodies such as glass wool and rock wool, resin foams, metal foams, foams such as cellular concrete, and crushed bodies thereof, sintered bodies of fibrous metal, porous ceramics, porous bodies. A quality sintered body or the like can be used. Of these, glass wool is most suitable from the viewpoint of both cost and sound absorption performance. However, when a hygroscopic sound absorbing material such as glass wool is used, it is desirable to apply a waterproof treatment such as wrapping the sound absorbing material with a film.

Further, the reason why the surface panel 5 is provided with an opening formed of a large number of through-holes 5a is to allow the sound absorbing material 8 to effectively absorb sound waves. When the opening ratio is extremely low, the sound absorbing interior plate is provided. Sound absorption performance as 4 cannot be maintained. Front panel 5
As the material, a relatively thin metal plate having a thickness of about 0.3 to 2.0 mm is preferably used, but a porous ceramic board, a sintered body of fibrous metal, or a porous material can be used as long as the material has a large sound wave transmission loss. It is also possible to use a sintered body or the like.

Surface panel 5 of sound absorbing interior plate 4 for tunnel
Is preferably coated with an inorganic coating material or an organic-inorganic composite coating material containing alkoxysilane or polyorganosiloxane as a main component. The inorganic coating material or organic-inorganic composite coating material here is a coating material having a siloxane bond formed by an alkoxysilane or polyorganosiloxane as a main skeleton. It may also be referred to as silicon-based paint, silicone-based paint, ceramic-based paint, or the like.
These paints have excellent characteristics not found in general organic paints because they have a siloxane skeleton as the main component, and are most suitable for use in tunnels in terms of stain resistance, durability, hardness, etc. It can be said that it is suitable.

The sound absorbing interior plate mounting structure for a tunnel according to the present invention is installed on the tunnel wall surface 2 by using the interior plate mounting bracket 3 having a cross section of a substantially π shape or a substantially E shape, so that the original performance of the structure can be obtained. It can be fully demonstrated. That is, the end edges 4b of the sound absorbing interior plate 4 for the tunnel are dropped into the grooves 3a on both sides of the interior plate mounting bracket 3 fixed along the tunnel wall surface 2 at predetermined intervals in the vertical direction to form the groove 3a and the sound absorbing interior plate. Four
By mounting the plate-shaped spring 9 in the gap between the end edges 4b of the and fixing the sound absorbing interior plate 4 for tunnel to the interior plate mounting bracket 3,
The sound absorbing interior plate can be attached and installed without a bolt, and the aesthetic appearance, which is one of the objects of the present invention, can be improved.

The interior plate mounting bracket 3 is not particularly limited in terms of material and the like, but as illustrated in FIG. 2, the sound absorbing interior plate 4 of the present invention.
It is necessary to have a cross-sectional shape having grooves 3a on both side surfaces capable of being dropped.

Further, as shown in FIG. 2, the front edge of the end edge 4b of the tunnel sound absorbing interior plate 4 fitted in the longitudinal groove 3a of the side surface of the interior plate mounting bracket 3 is at the front edge of the front panel 5. 5b is located in front of the interior plate mounting bracket 3,
Moreover, since the edges 5b of the front panel 5 are arranged with a predetermined interval, not only the interior plate mounting bracket 3 itself is exposed and invisible, but also the edges 5b of the front panel 5 serve as joints. , Has an excellent aesthetic sense in terms of design.

Further, the adjacent surface panels 5 of the upper and lower tunnel sound absorbing inner plates 4 fixed between the inner plate mounting brackets 3 are also arranged with a predetermined interval as shown in FIG. As a result, the joint between the upper edge and the lower edge of the front panel 5 is provided, and the aesthetic sense is excellent. Although not shown, a spacer may be positively provided as a joint between the upper edge and the lower edge of the front panel 5.

[0026]

As described above, according to the sound absorbing interior plate mounting structure for a tunnel of claim 1 of the present invention, the sound absorbing interior plate for a tunnel has a structure in which each surface panel is adjacent to the sound absorbing interior plate for a tunnel. Is attached to the interior plate mounting bracket so as to be arranged at a predetermined distance from the surface panel. Therefore, all the adjacent front surface panels are arranged at a predetermined interval, that is, the joints are provided between the front surface panels, and thus the aesthetic sense is excellent. Further, since each surface panel is attached to the side surface of the frame of the sound absorbing interior plate for a tunnel by bending its upper end and lower end, for example, with fasteners such as bolts, the fasteners such as bolts are attached to the surface. Since it is not exposed to, it does not spoil the beauty.

According to the sound absorbing interior plate mounting structure for a tunnel of claim 2 of the present invention, the sound absorbing interior plate for a tunnel is fitted in the longitudinal groove on the side surface of the interior plate mounting bracket fixed along the wall surface of the tunnel. It is easy to install because it is attached, and it does not spoil the appearance because it does not use fasteners such as bolts. Also, on the front surface of the edge of the sound absorbing interior plate for a tunnel fitted in the longitudinal groove on the side surface of the interior plate mounting bracket, the front panel edge should be positioned so that the edge of the front panel is located in front of the interior plate mounting bracket. Since the edges are arranged with a predetermined interval, not only the interior plate mounting bracket itself is exposed and invisible, but also the edges between the front panels serve as joints, which is excellent in aesthetic sense. It has become a thing.

According to the sound absorbing interior plate mounting structure for a tunnel of claim 3 of the present invention, the surface of the surface panel is coated with the inorganic coating material or organic-inorganic composite coating material containing alkoxysilane or polyorganosiloxane as a main component. ,
Good surface reflectance and durability are provided, and it becomes possible to maintain the aesthetic environment in the tunnel for a long time. Also,
Even if the surface of the vehicle is contaminated by exhaust gas or the like, it can be easily restored to its initial state by washing with water, and has good cleaning recovery properties without being damaged by a cleaning tool such as a brush.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a sound absorbing interior plate mounting structure for a tunnel of the present invention.

FIG. 2 is a plan view in which a part of a main part of the sound absorbing interior plate mounting structure for a tunnel of FIG. 1 is shown in section.

FIG. 3 is a front view showing an example of a sound absorbing interior plate for a tunnel used in the sound absorbing interior plate mounting structure for a tunnel of FIG. 1.

FIG. 4 is a perspective view showing a state in which the sound absorbing interior plate for a tunnel of FIG. 3 is disassembled.

FIG. 5 is a front view showing an example of a conventional sound absorbing interior plate mounting structure for a tunnel.

FIG. 6 is an enlarged front view of a part of the main part of the conventional sound absorbing interior plate mounting structure for a tunnel of FIG.

[Explanation of symbols]

 1 Sound absorbing interior plate mounting structure for tunnel 2 Tunnel wall surface 3 Interior plate mounting bracket 3a Interior plate mounting bracket Longitudinal groove 4 Sound absorbing interior plate for tunnel 4a Frame of sound absorbing interior plate for tunnel 4b Edge 5 Surface panel 5a Through hole 5b Edge 6 Anchor bolt 7 Rivet 8 Sound absorbing material

Claims (3)

[Claims] 1. A sound absorbing material is provided inside a rectangular frame,
In a structure for mounting a sound absorbing interior plate for a tunnel, wherein a sound absorbing interior plate for a tunnel, which is provided with a front panel having a large number of openings on a front surface, is attached to an interior plate mounting bracket fixed to a wall surface of the tunnel. The surface panel of the plurality of sheets at a predetermined interval in the frame body, the upper end and the lower end are respectively bent and attached to the side surface of the frame body by a fastener, and the tunnel sound absorbing interior plate, Characterized in that each surface panel is attached to an interior plate mounting bracket fixed to the tunnel wall surface so that the surface panels of the adjacent sound absorbing interior plates for tunnels are arranged at the predetermined intervals. Sound absorbing interior plate mounting structure for tunnels. 2. The interior plate mounting bracket fixed to the tunnel wall is fixed along the tunnel wall at predetermined intervals along the tunnel wall, and grooves are provided on both sides of the interior plate mounting bracket in the longitudinal direction. 2. An edge of a sound absorbing interior plate for a tunnel is fitted in the groove so that an edge of the front panel is located in front of the interior plate mounting bracket. Sound absorbing interior plate mounting structure. 3. The tunnel according to claim 1, wherein the surface of the surface panel is coated with an inorganic coating material or an organic-inorganic composite coating material containing alkoxysilane or polyorganosiloxane as a main component. Sound absorbing interior plate mounting structure.