JP2003129427A - Panel for noiseproof wall and mounting method for the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide panels for a noiseproof wall and a mounting method of the same, which is effective for preventing or diffusing noises, and by which the exfoliation of concrete debris from an elevated body or a noiseproof wall can be prevented and the panels are easily installed even if a install cite is in a high place. SOLUTION: The panels for the noiseproof wall according to the mounting method comprises a noiseproof part consisting of a core material and fiber reinforced plastic skin materials provided on both sides of the core material, and an exfoliation preventive cover made of fiber reinforced plastic, which is arranged below the noiseproof part to cover the vertical surface and the surrounding area of the lower surface end of the body of a construction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a panel for a soundproof wall that is installed alongside a railway track or a viaduct on a road, and more specifically, it is lightweight and has high durability and concrete due to deterioration of the viaduct frame. The present invention relates to a soundproof wall panel made of fiber reinforced plastic (hereinafter, also abbreviated as FRP) that has a function of preventing small pieces from coming off, and a method of mounting the same.

[0002]

2. Description of the Related Art Conventionally, as is well known, for example, concrete or metal soundproof walls have been installed mainly on railway and road viaducts for the purpose of mitigating noise to residents living along the railway lines. Since the soundproof wall made of these materials is comparatively heavy, it has a predetermined effect on the prevention and noise diffusion of the noise generated from the railroad cars and automobiles on the principle of sound insulation by the large mass.

[0006] Further, the skeletons such as the viaducts of railroads and roads are generally made of concrete and are constructed on site on the assumption that they have long-term durability.

[0004]

However, since the soundproof wall made of concrete or metal is a heavy object, it is indispensable to carry heavy machinery and a dedicated mounting machine into the mounting place when transporting and mounting it. Is. Especially when the installation site is a railway viaduct, it is difficult to approach a dedicated construction machine from the track side to the soundproof wall installation site. Since work at the site is unavoidable, as a result, the conventional work for installing a very heavy soundproof wall has to be a dangerous and difficult work.

In addition, in recent years, due to the overcrowding of cities, houses along railways and roads have also become higher in height, and sound barriers have been required to be made higher. However, conventional sound insulation made of concrete or metal is required. In terms of strength design, the weight of the wall will increase more and more, and there has been a problem that the construction work including the viaduct frame will be more difficult.

[0006] Further, as seen in recent concrete railway viaduct frames and concrete stripping accidents from the inner walls of tunnels, concrete elevated frames and concrete structures constructed with the expectation of long-term durability. Also in the soundproof wall, there is a problem that cracks are generated on the surface and the end of the concrete structure due to alkali embrittlement, corrosion of internal reinforcing bars, deterioration over time, and the like. Recently, there are many roads and houses under and near viaducts, and if a crack develops and concrete pieces fall, it could cause a life-threatening accident. It is expensive and it is hoped that safety measures such as peeling prevention will be implemented as soon as possible.

On the other hand, various measures have been studied. For example, as a measure for preventing the lower surface of an elevated structure from falling off, a method of attaching an iron plate or a net to the lower surface of the frame has been implemented. There are many problems and it has not spread widely.

As for the soundproof wall, there is a method in which a glass fiber woven fabric and a resin are laid up to form an FRP layer on the surface of the wall which may be peeled off. There are problems such as poor construction, water intrusion on the adhesive surface, and peeling of the FRP layer due to deterioration of concrete.

An object of the present invention is to solve the above problems, to prevent or diffuse noise, and to effectively prevent concrete pieces from coming off from an elevated frame or a soundproof wall. (EN) Provided is a soundproof wall panel which can be easily installed even if it is installed at a high place, and an installation method thereof.

[0010]

In order to solve the above problems, a soundproof wall panel of the present invention comprises at least a core material and
It has a soundproof part composed of a fiber-reinforced plastic skin material located on both sides of the core material, and below the soundproof part,
It is characterized by having a fiber-reinforced plastic exfoliation prevention cover that covers the vertical surface of the building frame and the vicinity of the end of the lower surface.

The soundproof wall panel may have a structure in which the soundproof part and the anti-stripping cover below the soundproof part are integrally formed.

As described above, by constructing the soundproof wall panel using the fiber reinforced plastic, it is possible to prevent cracks and small pieces peculiar to brittle materials such as concrete from coming off.

Since fiber-reinforced plastic has a higher specific strength than general metals such as concrete and iron, it is possible to reduce the weight and secure the strength by providing the necessary strength as a panel for a soundproof wall. In addition, regarding the core material to be sandwiched,
Good soundproofing effect can be achieved by selecting appropriate thickness and material.

Further, the reinforced fiber plastic peeling prevention cover for covering the vertical surface and the lower end portion of the building body prevents the peeled small pieces from dropping downward even if concrete piece peeling occurs from the building body. Can be held.

The soundproof wall panel mounting method according to the present invention is carried out, for example, by passing the mounting holes provided in the soundproof wall panel as described above through anchor bolts installed in advance in the building frame, and further by nuts. The method for fixing a soundproof wall panel to a building frame by using.

By such a mounting method, a lightweight soundproof wall panel provided with the soundproofing section and the anti-stripping cover below the soundproofing section is more easily fixed to the building frame at a high place such as a viaduct than the conventional method. can do.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. 1 and 2
FIG. 1 is a perspective view showing an installed state of a soundproof wall panel according to an embodiment of the present invention, FIG. 1 is a perspective view looking down from diagonally above, and FIG. 2 is a perspective view looking up from diagonally below. The upper part of the viaduct structure 1 such as a railway building shown in FIGS. 1 and 2 is at a considerably high position from the ground, and the plurality of lightweight soundproof wall panels 2 of the present invention are provided on the side surface of the upper structure in a horizontal direction or A continuous soundproof wall is formed by being installed side by side in the vertical direction.

The installation location of the soundproof wall panel of the present invention is not limited to this embodiment, and the soundproof wall of the present invention can be installed in various places where the installation of the soundproof wall is required in addition to the viaduct. Panel can be applied. Regarding the viaduct structure 1, the soundproof wall installed at the time of construction may be removed, and then the soundproof wall panel of the present invention may be newly installed, or the soundproof wall panel of the present invention may be newly installed. It may be constructed as.

Next, regarding the structure of the soundproof wall panel itself according to one embodiment of the present invention, a perspective view looking up from below in FIG. 3, a perspective view looking down from above in FIG. 4, and FIG.
Will be described with reference to side views and cross-sectional views of FIGS.

3, 4, and 5, the soundproof wall panel 2 of the present embodiment comprises a soundproof part 7, a peeling prevention cover 8 and a mounting part 9 provided below the soundproof part 7. The soundproof part 7 is required to have a function of preventing noise and a fall of a worker who works on the viaduct, and is required to be lightweight and highly durable. The main structure of the sandwich panel is made of skin material.

As shown in FIG. 5, the peeling prevention cover 8 has a shape that covers the upper side surface (vertical surface) of the skeleton of the concrete building such as the viaduct skeleton 1 and the lower surface in the vicinity of the end portion thereof, and is prevented by deterioration of the concrete. Even if peeling of a small piece of concrete occurs, it is necessary to have a function of holding it so that it does not fall downward, and therefore it is made of a lightweight and high-strength fiber-reinforced plastic member. As for the material of the anti-stripping cover, if it is a metal plate material, there are problems such as deterioration of workability due to an increase in weight and the occurrence of rust, and a cover made only of plastic that is not reinforced with fibers has sufficient strength. Hard to get. Therefore, in the soundproof wall panel of the present invention, by using the fiber-reinforced plastic as the exfoliation prevention cover,
It is possible to achieve both weight reduction, durability and a function of preventing flaking at the same time.

Further, in this embodiment, the peeling-preventing cover 8 is formed integrally with the soundproof portion 7, and as a result,
The structure also has a function as a structural member for supporting the soundproof part 8.

Further, in order to further reinforce the structure in which the soundproofing part 7 and the anti-stripping cover 8 are integrated, a plurality of pillars 12 partially shaded in FIG. The structure is embedded so as to be integrated with the peeling prevention cover 8.

Next, the internal structure of the soundproof wall panel will be described with reference to the sectional views of FIGS. The embedded state of the pillar 12 is such that the fiber-reinforced plastic skin material 1 on both sides is formed.
It has an integral structure covered with 0a and 10b. Further, by arranging the fiber-reinforced plastic ribs 14 between the core material 11 and the pillars 12 and covering the periphery of the pillars 12 with the reinforced fiber-plastic layer, a stronger solid structure can be obtained.

Further, the core material 11 and the fiber-reinforced plastic skins 10a and 10b located on both sides of the core material 11 are connected by the fiber-reinforced plastic ribs 13 for reinforcement.

By arranging the fiber-reinforced plastic ribs 13 and 14 at appropriate positions, it is possible to reduce the influence of the low shear physical properties of the core material, and it becomes easy to secure the necessary strength and rigidity for the soundproof part.

Such a fiber-reinforced plastic rib 1
Regarding No. 3, like the fiber-reinforced plastic ribs 13 provided in the cross-section shown in a part of the side view of FIG. 5, not only in the vertical direction of the soundproof part, but also in the horizontal direction,
The strength and rigidity in the lateral direction are also improved.

Such a structure may be integrated by joining and assembling each member after molding, but it is more preferable that they are all integrally molded. By integrally molding, not only the labor and time for assembly and joining can be saved, but also the strength of the entire soundproof panel can be reduced by eliminating the joint where it is difficult to stably develop high strength. Can be exhibited stably, and eventually a lightweight soundproof wall panel with no waste can be obtained. As the integral molding method, for example, a hand lay-up method, an autoclave method, or the like can be used to perform molding by any general molding method for fiber-reinforced plastics. Further, each member formed by a continuous forming method such as a pull-through method may be cut into an appropriate size, and then assembled and joined to be formed.

However, in the complicated structure in which the core material 11, the column body 12 and the ribs 13 and 14 made of fiber reinforced plastic are arranged inside, like the soundproof wall panel of the above embodiment, the more preferable integral molding method. As a so-called RT
M (Resin Transfer Molding) method or RIM (Resin In
Jection Molding) method, or the integrated molding method (SCRI) in which the diffused material of the injection resin is placed at the same time as the pressure of the molding site is reduced.
It is preferable to adopt a molding method such as MP method) in which liquid plastic is injected into a cavity in which reinforcing fibers, core materials, and column materials are arranged, and impregnated and cured.

Further, in order to eliminate the discontinuity of the abutting portions of the side surfaces of each panel when they are installed side by side in the horizontal direction, the overlapping portions 15a,
5b is provided.

The superposed portions may not be in direct contact with each other, but a slight gap may be provided, and a filler, a cushion rubber, a sponge, or a sealant may be disposed therebetween.
As a result, the connected panels have a continuous appearance, and the soundproofing effect is further improved.

Next, the mounting portion 9 will be described with reference to FIGS.
0, FIG. 11, and FIG. 12 will be described. FIG. 9 is an embodiment of a mounting structure for the soundproof wall panel shown in FIG. 3, and FIG.
Another embodiment of the mounting structure of the soundproof wall panel shown in FIG. 3, FIG. 11 is a perspective view showing the soundproof wall panel of another embodiment,
FIG. 12 shows an example of a mounting structure for the soundproof wall panel shown in FIG.

The mounting portion 9 of the soundproof wall panel 3 has a soundproof portion 7
It can be provided at a suitable position in consideration of the structure and workability of the structure such as the side surface of the viaduct structure part to be installed below, and the lower surface near the end. As a result, the soundproof panel of the present invention can be installed independently in the building frame by itself, and compared with a soundproof wall having a general structure requiring columns and crosspieces, the number of steps for installation is great. And you can save time.

As an embodiment of the mounting portion 9, as shown in FIG. 3, it can be provided on the lower surface of the exfoliation prevention cover 8. A strong mounting structure can be obtained by providing a mounting hole at a position where the pillar is embedded among the parts. The mounting structure in that case is as shown in FIG.
It is possible to use a method in which an anchor bolt 20 previously installed on the lower surface of the end of the upper part of the elevated structure is passed through the mounting hole of the mounting portion 9 of the soundproof wall panel 2 and is fastened with the nut 21. The anchor bolt 20 can be buried at the time of constructing a building frame, or may be a chemical anchor or the like punched after construction and then driven.

As another mounting structure, as shown in FIG. 10, a mounting portion 9 is provided on the vertical surface of the exfoliation prevention cover 8 which is in contact with the side surface of the elevated frame 1, and the anchor bolt 20 is provided in the same manner as in FIG.
It is also possible to conclude with.

Further, like the soundproof wall panel of another embodiment shown in FIG. 11, the lower side of the pillar 12 integrally formed with the soundproof part 7 and the anti-slip cover 8 is extended to expose the pillar. Alternatively, the mounting portion 9 may be provided at that portion. In that case, the mounting structure is as shown in FIG.
The method of fastening can be made as 1. FIG. 13 is an image diagram showing a mounting process in that case.

The installation location, structure, and fastening means of the mounting portion are not limited to the examples shown here, and various mounting portion structures can be selected in addition to this.

Of course, the present invention includes configurations other than the soundproof wall panel having a structure in which the soundproof part and the anti-stripping cover are integrally molded.

For example, FIG. 14 is a perspective view of a soundproof wall panel of another embodiment, and FIG. 15 is an overall perspective view showing the installation state of the soundproof wall panel of FIG. Like the soundproof wall panel 4 of the embodiment, the soundproof part 7, the anti-stripping cover 8, the mounting part 9, and the pillar 12 are joined by fastening or bonding to form a final integrated structure. Also, this is one of the embodiments of the present invention. The soundproof wall panel 4 shown in FIG. 14 is for adding an additional soundproof wall panel to the existing soundproof wall panel installed on the viaduct structure without removing it.

With this structure, the existing soundproof wall panel 5 shown in FIG. 15 can be left and the soundproof wall panel 4 can be additionally installed on the existing soundproof wall panel 5, and the soundproof part 7, the peeling prevention cover 8 and the pillar body can be installed. With the structure in which the 12 and the mounting portion 9 are integrated, the construction cost and the maintenance cost can be significantly reduced, and at the same time, a peeling prevention function can be added.

Although various structures have been described above with respect to the peel-off prevention cover 8, the structure is not limited thereto, and it is effective to select the shape of the high-bridge structure, the portion where cracks or concrete small pieces are easily peeled off. Any shape that can be covered with In particular, the length of the cover that covers the corners of the lower surface of the end of the viaduct that is liable to peel off is preferably at least 5 cm or more in the horizontal direction, and the underside of the viaduct should be covered within a range of about 10 cm to 100 cm. Is desirable.

Next, the respective constituent members described so far will be described in detail. Fiber-reinforced plastic skins 10a and 10b shown in FIGS. 6, 7, and 8, fiber-reinforced plastic ribs 13 and 14, overlapping portions 15a and 1
5b and the like are made of fiber reinforced plastic.
Examples of the reinforcing fiber include glass fiber, carbon fiber, aramid fiber and the like, and the fineness thereof is 100 to 200.
It is preferably within the range of 0 dtex, but from the viewpoint of preventing the falling of small pieces in the present invention, 200 to 1000 dt.
ex is more preferable. As the matrix resin, for example, epoxy resin, unsaturated polyester resin,
Examples thereof include vinyl ester resins, but other resins may be used, and when flame retardancy is particularly required, flame retardant resins such as phenol resins may be used as the matrix resin.

The volume content Vf of the reinforcing fiber in the fiber reinforced plastic is preferably about 15 to 60%, and 3
0 to 50% is more preferable.

Fiber-reinforced plastic skins 10a, 1
In order to improve the weather resistance, the surfaces of 0b and the overlapping portions 15a and 15b can be coated with a pigment or a weather resistant chemical in the resin, or can be coated or coated with a gel coat layer. Fiber reinforced plastics can be made by appropriately selecting the plastic material compared to iron, aluminum alloy, etc.
Resistance to moisture and chemicals can be increased, and maintenance such as rust prevention coating is not required. However, when the resin is directly irradiated with ultraviolet rays, the plastic gradually deteriorates and the strength etc. decreases, so if it is assumed to be used outdoors for a long period of time, the surface is covered with a gel coat layer. In addition, it is desirable to prevent the penetration of ultraviolet rays into the structure by using a plastic colored with a pigment or a dye. By taking these measures, the degree of freedom in selecting the color of the colored gel coat and the degree of freedom in forming the complicated shape of the fiber reinforced plastic are utilized, making it extremely difficult to design, unlike conventional concrete or metal soundproof wall panels. It is possible to easily realize a highly flexible surface and obtain favorable results in appearance. For example, the surface can be covered with a colored gel coat layer such as a brick pattern.

The core material 11 shown in FIGS. 6, 7 and 8 plays a role of a spacer for ensuring bending rigidity as well as soundproofing, and its material is, for example, 20 to 30.
It is preferable to use a lightweight material such as a double urethane foam, but other materials such as wood and honeycomb may be used. In addition, a material for adding a special function such as selecting a material having a high vibration damping effect in order to enhance the soundproof effect may be used. The entire periphery of the core material 11 can be covered with fiber reinforced plastics such as fiber reinforced plastic skin materials 10a and 10b and fiber reinforced plastic ribs 13 and 14, which can completely block intrusion of moisture and ultraviolet rays. . The thickness of the core material 11 may be appropriately selected according to the required soundproof performance and strength characteristics.

In order to improve the soundproof performance, the soundproof wall panel may be installed inside the viaduct frame and then a sound absorbing material or a sound insulating material may be attached to the inside.

The pillar body 12 having the above-described structure reinforces the soundproof wall panel to provide the necessary strength against wind pressure received by the soundproof wall panel during a typhoon or a train passage. Can be achieved. As for the material of the pillars, it is possible to use various general materials, and it is possible to further reduce the weight by using pillars made of fiber reinforced plastic, etc., and it is also possible to construct them with metal. Is. Although the use of a metal column increases the weight, it is possible to easily achieve strength against a load such as wind pressure at low cost. It is particularly effective to use a hollow metal square member or the like.

Regarding the external dimensions of the soundproof wall panels of the various embodiments described above, the height H of the upper end of the soundproof portion from the upper surface of the body is used as a soundproof wall panel in a railway viaduct, although it depends on the application. In some cases, 500-5000
mm, and more preferably 1000 to 3000 mm is a reasonable size from a functional viewpoint. Regarding the horizontal dimension (width) of the soundproof wall panel, it is possible to realize up to about 25 m with one body (when it is more than that, it becomes difficult to carry dimensionally), and when connecting relatively small ones , Lateral dimension W5
A size of about 00 to 3000 mm is a realistic size in terms of cost and construction. When the lateral dimension W is relatively large, at least a part of the soundproof part 7 and the anti-stripping cover 8 may be formed into a curved shape along a curve such as a viaduct to form a soundproof wall panel having a curved surface. It is possible.

The thickness T is determined from functional aspects such as strength design against wind load, noise diffusion prevention, and fall prevention of track maintenance workers, but it is generally about 10 to 200 mm, and more preferably, 30 to 150 mm is an appropriate size from the standpoint of soundproofing performance and functional aspects such as weight reduction.

The required dimensions and number of columns are determined by the strength design such as wind load. However, if sufficient rigidity and strength are secured by FRP, the FRP sandwich structure can be used without reinforcement by the columns. It is possible to construct a soundproof wall panel.

The external dimensions described above are only examples shown in the present embodiment, and the external dimensions outside the above range are also included in the present invention depending on the construction site.

Further, regarding the weight of the soundproof wall panel of the present invention, the column 12, the mounting portion 9, the anti-stripping cover 8 and the like have a sufficiently strong structure due to the strength design in consideration of the wind pressure of the typhoon. Inevitably, the soundproof part 2 is light in weight except for the column 12, the mounting part 9, and the exfoliation prevention cover 8 (specifically, a fiber-reinforced plastic panel consisting of skins and cores on both sides). For securing, it is desirable to be in the range of 10 to 60 kg / m ² per unit area. By applying the above structure and material,
Achievable.

[0053]

EXAMPLE 1 As shown in the perspective view of FIG. 11 and the cross-sectional views of FIGS. 6, 7 and 8, the soundproof part, the anti-stripping cover and the pillar are integrally formed, and the lower end of the pillar is A soundproof wall panel 3 having a structure in which a mounting portion was provided on the protruding portion of was manufactured as follows.

As the fiber-reinforced plastic skin 10a constituting the soundproofing part and the anti-stripping cover, a glass fiber chopped strand mat, a plurality of glass fiber fabrics (fiber orientation: 0 ° / 90 °, + 45 ° / -45 °), A predetermined number of carbon fiber woven fabrics (fiber orientation: 0 ° / 90 °) were laminated respectively, then 30 times expanded rigid polyurethane foam was placed as the core material 11, and hot-dip galvanized as the pillar body 12. Three pillars made of iron hollow square bar (150 × 75 mm) were placed. A glass fiber woven fabric (fiber orientation: 0 ° / 90 °, + 45 ° / −45 °) that becomes the rib 14 made of fiber reinforced plastic between the core material 11 and the pillar 12.
Fiberglass woven fabric (fiber orientation: 0 ° / 90
(°, + 45 ° / −45 °) was arranged to perform reinforcement to connect the skins on both sides.

Further, as the fiber-reinforced plastic skin 10b on the other side, a glass fiber chopped strand mat and a plurality of glass fiber fabrics (fiber orientation: 0 ° /
90 °, + 45 ° / −45 °) and carbon fiber woven fabric (fiber orientation: 0 ° / 90 °) were laminated in predetermined numbers.

Next, the whole was hermetically sealed, the inside was evacuated, the unsaturated polyester resin was impregnated by the above-mentioned SCRIMP method, and the soundproof wall panel was integrally molded. In addition, the hollow square bar of the column body was previously closed at its end so that the resin did not flow into the hollow section.

The soundproof panel thus obtained has a height of 3.1 m (soundproof parts 2.5 m and a vertical portion of the anti-slip cover 0.6 m), a width of 1 m, and a horizontal portion of the anti-slip cover ( (Slightly inclined according to the body) has a shape that covers the lower surface of the body end portion with a width of 20 cm. From there, a mounting hole into which the anchor bolt was inserted was provided with the end of the protruding column as a mounting portion.

The weight of the unit of the soundproof wall panel 3 was 200 kg / m (height of the soundproof part was 2.5 m). As a reference, existing concrete sound barriers such as railway viaducts with a height of 1.5 m are 400 to 500
It has a weight of about kg / m and is significantly lighter.

Next, regarding the railway viaduct frame on which this soundproof wall panel is installed, the existing concrete soundproof wall panel is cut and removed using a wall cutter, and the above-mentioned soundproof wall panel to be newly mounted is lifted. , Fig. 13
As shown in, a chemical anchor and a nut were attached to the lower surface of the end of the viaduct structure. By this method, it is possible to realize a taller soundproof wall panel that is lighter in weight than before, and the soundproofing performance is improved, and unlike the conventional method, it is not necessary to install pillars and crosspieces and to fit the panel, and the construction work can be done. It has been possible to greatly reduce the number of steps and time.

Example 2 As shown in the perspective view of FIG. 14, the soundproofing part 7 and the pillar 12 were integrally molded, and a horizontal portion was provided below the pillar to form a mounting portion 9 on the lower surface of the viaduct. Further, a soundproof wall panel 4 having a structure in which a fiber-reinforced plastic exfoliation prevention cover 12 is integrated in the lower part of the column was manufactured as follows.

Unlike the first embodiment, the soundproof panel 4 is for adding a soundproof wall to the existing soundproof wall without removing the existing concrete soundproof wall installed on the railway viaduct. Is.

The soundproof part had a structure in which the core material and the column were sandwiched from both sides by skins made of fiber reinforced plastic, as in Example 1, and the molding method was the same as that of the SCRIMP method.

Next, the fiber reinforced plastic exfoliation prevention cover 8 has a glass fiber chopped strand mat and a plurality of glass fiber woven fabrics (fiber orientation: 0 ° / 90 °, + 45 °) as a fiber reinforced plastic bent veneer structure.
/ -45 °), carbon fiber fabric (fiber orientation: 0 ° / 90
After being laminated by a hand lay-up method and impregnated with an unsaturated polyester resin, the pillars 12 were integrated with each other by bolting and bonding together.

The soundproof portion 7 of this soundproof wall panel has a width of 2
m, height 1 m (additional 1 m to existing 1.5 m high soundproof wall), fiber-reinforced plastic cover 12 has a width of 2 m, vertical part height of 0.6 m, horizontal part (on the body) (Slightly inclined), the lower surface of the body end portion is covered with a width of 20 cm. In addition, a mounting hole into which the anchor bolt is inserted is provided as a mounting portion at the lower end of the column.

The weight of the unit of the soundproof panel 4 is 180 kg (90 kg per 1 m because the width is 2 m).
Met. As a reference, existing concrete noise barriers such as railway viaducts (even with a height of 1.5 m, 400-5
(About 00 kg / m), when a similar concrete soundproof panel is further added for 1 m to form a soundproof wall having a height of 2.5 m, it is about 650 kg to 800 kg per 1 m. 1 with the soundproof wall
With a weight of about 500 kg per m, a soundproof wall with a height of 2.5 m can be added to the structure, achieving a significant weight reduction.

Next, this soundproof wall panel 4 was lifted up and attached to the lower surface of the end of the viaduct frame using chemical anchors and nuts, as shown in FIG. Although this method was inferior in weight to Example 1, it was possible to improve the soundproofing performance at low cost and to significantly reduce the number of construction steps and time.

[0067]

As described above, according to the soundproof wall panel of the present invention, the soundproof part, which is a main component thereof, is
Since it is made of fiber reinforced plastic, crack propagation due to small repeated load peculiar to the brittle material of concrete does not occur, and it is possible to prevent small pieces from falling from the soundproof wall. In addition, by using the fiber-reinforced plastic exfoliation prevention cover, which is the other main component, by covering the end of the viaduct frame made of concrete or the like, due to deterioration of the concrete that constitutes the frame, even if cracks occur, It is possible to hold the small concrete pieces without dropping them, and it is possible to ensure safety in the surrounding area.

Since fiber reinforced plastics can have a higher specific strength than general metals such as concrete and iron, it is possible to significantly reduce the weight while maintaining the strength required for a soundproof wall. As a result, it is possible to safely and relatively easily perform the lifting installation work using a heavy machine or the like at an installation site such as a viaduct.

Further, by having the mounting portion provided below the soundproof portion, the soundproof wall panel having a general structure can be installed by itself in the building skeleton and requires columns and crosspieces separately. Compared with, it is possible to reduce the labor and time for installation.

[Brief description of drawings]

FIG. 1 is an overall perspective view (perspective view looking down from above) showing an installed state of a soundproof wall panel according to an embodiment of the present invention.

2 is an overall perspective view (perspective view looking up from below) showing a state where the soundproof wall panel of FIG. 1 is installed. FIG.

FIG. 3 is a perspective view (a perspective view looking up from below) of the soundproof wall panel according to the embodiment of the present invention.

FIG. 4 is a perspective view (a perspective view looking down from above) of the soundproof wall panel of FIG. 3;

5 is a side view showing a partial cross-section of the soundproof wall panel of FIG.

6 is a transverse cross-sectional view of the soundproof wall panel taken along the line AA in FIG.

7 is a transverse cross-sectional view of the soundproof wall panel taken along the line BB of FIG.

8 is a transverse cross-sectional view of the soundproof wall panel taken along the line CC of FIG.

9 is a schematic configuration diagram showing an embodiment of a mounting structure of the soundproof wall panel of FIG.

10 is a schematic configuration diagram showing another embodiment of the mounting structure of the soundproof wall panel of FIG.

FIG. 11 is a perspective view of a soundproof wall panel according to another embodiment.

12 is a schematic configuration diagram showing an embodiment of a mounting structure of the soundproof wall panel of FIG.

13 is an exploded configuration diagram showing a mounting step of the mounting structure of FIG.

FIG. 14 is a perspective view of a soundproof wall panel according to still another embodiment.

FIG. 15 is an overall perspective view showing an example of the installation state of the soundproof wall panel of FIG.

[Explanation of symbols] 1 Viaduct structure 2, 3, 4 soundproof panel 5 Existing soundproof wall panels 7 sound insulation 8 Stripping prevention cover 9 Mounting part 10a, 10b Fiber-reinforced plastic skin material 11 heartwood 12 pillars 13, 14 Rib made of fiber reinforced plastic 15a, 15b Overlapping part 20 anchor bolt 21 nuts

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 2D001 AA01 AA05 BB01 CA01 CB01                       DA02                 2D059 AA21 GG25                 5D061 AA06 AA22 BB21 BB35 BB37                       DD01

Claims (15)

[Claims] 1. A soundproof part comprising a core material and fiber-reinforced plastic skin materials located on both sides of the core material,
A soundproof wall panel, characterized in that it has a fiber-reinforced plastic exfoliation prevention cover that covers the vertical surface of the building frame and the vicinity of the lower end portion below the soundproof portion. 2. The soundproof part and the anti-stripping cover below the soundproof part are integrally formed.
The soundproof wall panel according to claim 1. 3. The soundproof wall panel according to claim 1 or 2, wherein a mounting portion for a building frame is provided below the soundproof portion. 4. A columnar body is provided so as to reinforce both the soundproofing part and the anti-stripping cover below the soundproofing part. Soundproof wall panel. 5. The soundproof wall panel according to claim 4, wherein a mounting portion for a building frame is provided at a lower portion of the pillar body. 6. The soundproof wall panel according to claim 4, wherein at least a part of the pillar is embedded in the soundproofing part and a peeling prevention cover below the soundproofing part. 7. The soundproof wall according to claim 4, wherein at least a part of the pillar is integrally formed with a soundproofing part and a peeling prevention cover located below the soundproofing part. Panel. 8. The fiber-reinforced plastic rib is interposed between the core and the pillar without the directly formed portion of the pillar being in direct contact with the core. The soundproof panel according to item 7. 9. The soundproof wall panel according to claim 4, wherein the pillar is made of metal. 10. The soundproof wall according to any one of claims 1 to 9, wherein ribs for connecting skin materials located on both sides of the core material are provided inside the soundproof portion. panel. 11. The soundproof panel according to claim 1, wherein the weight of the soundproofing unit per unit area is in the range of 10 to 60 kg / m ² . 12. A flame-retardant resin is used as a matrix resin of the fiber-reinforced plastic that forms the skin material of the soundproof portion and the peeling-preventing cover below the skin material. The soundproof panel according to any one of 1 to 11. 13. A soundproof wall using a mounting hole provided in the soundproof wall panel according to claim 1 through an anchor bolt installed in advance in a building frame, and further using a nut. A soundproof wall panel mounting method, characterized in that the soundproof panel is fixed to the building frame. 14. The method for mounting a panel for a soundproof wall according to claim 13, wherein the mounting anchor bolt is embedded when concrete is poured into a building frame. 15. The method of attaching a soundproof wall panel according to claim 13, wherein the attachment anchor bolt is a chemical anchor that is driven in by punching after the construction of the building structure is completed. .