JP5541193B2 - Sound barrier - Google Patents

Description

  The present invention relates to a soundproof wall provided along a railway line, a road viaduct or the like in order to insulate and absorb noise associated with traveling of a train or a vehicle.

  Conventionally, soundproof walls installed on railway and road viaducts have been provided with inexpensive cast-in-place concrete or metal soundproof walls. However, cast-in-place reinforced concrete cannot uniformly disperse aggregate gravel and sand, and soundproof walls with varying strength are installed. Among cast-in-place reinforced concrete, those using sea sand as aggregate are promoted to be neutralized, rusting occurs in the reinforcing bars and expands, cracking the concrete, and many exfoliation accidents have occurred in the past. It became a problem.

  On the other hand, as shown in Patent Document 1, for example, a homogenous concrete soundproof wall (precast concrete soundproof wall) is manufactured in advance at the factory, brought into the construction site, and directly installed, so that the installation work at the site Can be performed in a short period of time.

  However, since the sound barrier made of precast concrete is heavy, it is necessary to carry heavy machinery and a dedicated mounting machine to the mounting location when transporting and mounting. Also, when transporting the product to the construction site, it is heavy, so there is room in the loading space for trucks, etc., but the loading capacity is determined by the maximum loading capacity of the truck and the transportation efficiency is very poor. There is.

  On the other hand, recently, an example in which a lightweight soundproof wall using a lighter material, for example, fiber reinforced plastic (FRP), as described in Patent Documents 2, 3, and 4, is increasing. Yes. Such a lightweight soundproof wall has the advantages of ease of installation work due to its light weight, as well as the problems of aging degradation like the cast-in-place reinforced concrete mentioned above, and simplification of maintenance. Examples are likely to increase.

  However, the precast concrete soundproof wall described in Patent Document 1 and the FRP soundproof wall described in Patent Documents 2 and 3 are all provided over the entire width of the soundproof wall. When installing a wall in a building frame, there is a problem that the amount of filler (grouting material, etc.) and auxiliary material (cushioning material) used to fill the gap between the mounting part and the building frame after adjusting the position of the soundproof wall is large. there were. In addition, since the attachment portion extends over the entire width of the soundproof wall, there is a problem in that the amount of material used to form the soundproof wall attachment portion is increased and the production cost of the soundproof wall is increased. On the other hand, although the mounting part of the FRP soundproof wall described in Patent Document 4 does not extend over the entire width of the soundproof wall, the mounting member is a separate part from the mounting hole provided in the lower part of the FRP stiffener integrally formed with the sound insulating part. As a result, it is necessary to inspect the connection bolts for looseness after the installation of the soundproof wall.

JP 2001-040620 A JP 2007-239319 A JP 2010-071071 A JP 2005-213791 A

  In view of the problems as described above, the present invention makes it possible to reduce the material used for the production of the soundproof wall by minimizing the mounting portion of the soundproof wall to the building frame with respect to the entire width of the soundproof wall. In addition to providing a soundproof wall, it is an object of the present invention to provide a soundproof wall with a low construction cost by reducing the amount of fillers and auxiliary materials used to fill the gap between the mounting portion and the building frame during installation. Another object of the present invention is to provide a soundproof wall that does not require a bolt looseness check after the soundproof wall is installed by integrally constructing the mounting portion with the soundproof panel portion or the stiffener portion.

In order to solve the above problems, a method for attaching a soundproof wall panel according to the present invention has the following configuration. That is,
(1) A soundproof wall having one or a plurality of soundproof panel portions and a mounting portion having a depth of 2 to 20% of the height of the soundproof panel portion and provided with a through-hole that can be attached to a building frame. The total width of the mounting portion is in the range of 10 to 80% of the total width of the soundproof panel portion, and a stiffener is integrally extended from the mounting portion on one side of the soundproof panel portion. A soundproof wall characterized in that the mounting portion has an opening portion that opens in a substantially U-shape in a direction extending from the soundproof panel portion .
(2 ) The soundproof wall according to ( 1 ), wherein a portion other than the opening of the stiffener has a hollow structure.
( 3 ) The soundproof wall according to ( 2 ), wherein a partition plate is provided at a boundary between the opening and the hollow structure, and an air vent hole is provided in the partition plate.
( 4 ) The soundproof wall according to ( 2 ), wherein a filler is provided inside the hollow structure, and a partition plate is provided at a boundary with the opening.
( 5 ) The soundproof wall according to ( 4 ), wherein the filler is foamed plastic.
( 6 ) The soundproof wall according to any one of (1) to ( 5 ), wherein at least one of the stiffeners extends in the longitudinal direction of the soundproof panel portion.
( 7 ) The soundproofing panel according to any one of (1) to ( 6 ), wherein the soundproofing panel portion includes a core material and an FRP skin material positioned on both sides of the core material. wall.
( 8 ) The soundproof wall according to any one of (1) to ( 6 ), wherein the soundproof panel portion is a FRP skin material having a single plate structure.
( 9 ) The soundproof wall according to any one of (1) to ( 8 ), wherein the attachment portion and / or the stiffener is composed of at least an FRP layer.
(1 0) the building skirt covering a portion of the side surface of the building frame is soundproof wall according to any one of characterized by comprising extends from the acoustic panel portion (1) to (9).
(1 1 ) The soundproof wall according to (1 0 ), wherein the skirt portion is composed of at least an FRP layer.
It is.

  According to the present invention, it is possible to provide a soundproof wall having a low manufacturing cost and a low construction cost by reducing the amount of fillers and auxiliary materials used to fill the gap between the mounting portion and the building frame. can do. Furthermore, it is possible to provide a soundproof wall that does not require a bolt looseness check after the soundproof wall is installed.

It is a perspective view of the soundproof wall concerning one embodiment of the present invention. It is a perspective view of the state which attached the soundproof wall of FIG. 1 to the building frame. It is a longitudinal cross-sectional view of the soundproof wall of FIG. It is a longitudinal cross-sectional view of the soundproof wall of FIG. It is the elements on larger scale near the attaching part of the soundproof wall of FIG. It is a perspective view of the soundproof wall concerning the other embodiment of this invention. It is a perspective view of a soundproof wall concerning other embodiments of the present invention. It is a perspective view of the state which attached the soundproof wall of FIG. 1 to the building frame, and filled the opening part with the loosening prevention filler. It is a longitudinal cross-sectional view of the soundproof wall of FIG. It is a longitudinal cross-sectional view of the state in which the inside of the hollow structure of the soundproof wall of this invention was filled with the filler. (A)-(c) is a perspective view which shows the embedding state to the building frame of an anchor bolt, respectively. (A)-(n) is a perspective view which shows the shape of the through-hole each provided in the attaching part of the soundproof wall. It is a perspective view of the state which attached the soundproof wall concerning the further another embodiment of this invention to the building frame. It is a longitudinal cross-sectional view of the sound barrier wall of FIG. It is the elements on larger scale near the attaching part of the soundproof wall of FIG. It is a perspective view of a soundproof wall concerning other embodiments of the present invention. It is a perspective view of the state which attached the soundproof wall of FIG. 16 to the building frame. It is a longitudinal cross-sectional view of the soundproof wall of FIG. It is the elements on larger scale near the attaching part of the soundproof wall of FIG.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

  1 is a perspective view of a soundproof wall according to an embodiment of the present invention, FIG. 2 is a perspective view of the soundproof wall of FIG. 1 attached to a building housing, and FIG. 3 is a perspective view of the soundproof wall of FIG. 4 is a longitudinal sectional view taken along the line AA, FIG. 4 is a longitudinal sectional view taken along the line BB of the soundproof wall in FIG. 2, and FIG. 5 is a partially enlarged view of the vicinity of the mounting portion of the soundproof wall in FIG. is there.

  In FIG. 1, the soundproof wall 1 of the present invention has a soundproof panel portion 2 and one or a plurality of attachment portions 3 having a depth D of 2 to 20% of the height H of the soundproof panel portion 2.

  In FIG. 2, the attachment portion 3 is an attachment portion for joining to the building housing 13, and the depth D of the attachment portion 3 is a bending moment generated by the wind pressure received by the soundproof panel portion 2 having a height H. A size that can be sufficiently transmitted to the housing 13 is required. If the depth D of the mounting portion 3 is too small, the bending moment cannot be sufficiently transmitted to the building housing 13, and if too large, the dimension D of the mounting portion on the building housing 13 side corresponding to the depth D of the mounting portion 3. 'Also needs to be enlarged, and there is a problem that the building housing 13 becomes large and the construction cost of the building becomes high.

  Therefore, the depth D of the attachment portion 3 is 2 to 20% of the height H of the soundproof panel portion 2. Preferably it is 10 to 15%.

  FIG. 6 is a perspective view of a soundproof wall according to another embodiment of the present invention, and FIG. 7 is a perspective view of a soundproof wall according to still another embodiment of the present invention. As shown in FIG. 6, there may be one mounting portion 3 or a plurality of mounting portions 3 as shown in FIGS. 1 and 7, but if there is only one mounting portion 3, the soundproof wall 1 is a building. Since it becomes unstable when a wind load is applied to the soundproof panel 2 after being installed on the housing 12, it is preferable that there are a plurality of attachments 3. Regardless of whether the number of mounting parts 3 is one or more, the total of the widths w1, w2,... Wn of the mounting parts 3 (w1 + w2 +... + Wn) is 10 to 80 of the total width W of the soundproof panel 2. % Range. As shown in FIG. 5, the soundproof wall 1 is attached to the building housing 13 by providing a damming material 15 around the bottom surface of the mounting portion 3, and the through holes 5 provided in the mounting portion 3 are provided in the building housing 13. Insert into embedded anchor bolt 14. Thereafter, the gap filler 16 is filled from the gap between the through hole 5 and the anchor bolt 14, and the gap filler 16 is filled into the gap between the bottom surface of the mounting portion 3 and the building frame 13 and the gap between the anchor bolt 14 and the through hole 5. Then, it is fixed with a washer plate 17, a flat washer 18, and a nut 19.

  If the total of the widths w1, w2,... Wn of the mounting portion 3 is small, there is a merit that the material usage of the gap filling material 16 and the damming material 15 can be reduced, and the material cost is reduced. When this is done, there are disadvantages such as the stress generated by the reaction force received by the mounting portion 3 from the building housing 13 becomes large and the strength becomes insufficient, and the temporary fixing during construction becomes unstable. In order to minimize the cost without adversely affecting the workability while satisfying the design standard strength, the sum of the widths w1, w2, ... wn of the mounting part 3 (w1 + w2 + ... + wn) is the soundproof panel. It is necessary to make it into the range of 10 to 80% of the full width W of the part 2. In order to secure a space in which the nut can be easily tightened during installation, it is more preferably 30 to 80%.

  In order to efficiently transmit the load received by the soundproof panel portion 2 to the building housing 13 via the attachment portion 3 when a wind load is applied, the soundproof panel portion 2 is integrally extended from the attachment portion 3 on one side. A stiffener 4 is provided.

  In order to secure a space for installing and fixing a washer plate 17, a flat washer 18 and a nut 19 for fixing the mounting portion 3 to the building housing 13, the mounting portion 3 is provided on the side of the stiffener 4. It has an opening 6 that opens in a substantially U-shape in the direction extending from the soundproof panel 2. In order to allow the nut 19 to be tightened using a tool such as a torque wrench or an impact wrench, the width of the opening 6 is preferably in the range of 50 to 400 mm, and the height of the opening 6 is preferably 100 to 700 mm. If the opening size is too large, there is a structural problem that the stiffener 4 is likely to buckle when a wind load is applied to the soundproof panel. On the other hand, if the opening size is too small, the washer plate 17, the flat washer 18 and the nut 19 cannot be installed, and the mounting portion 3 cannot be fixed to the building housing 13. More preferably, the width of the opening 6 is 150 to 300 mm, and the height of the opening 6 is 300 to 500 mm.

  8 is a perspective view of a state in which the soundproof wall of FIG. 1 is attached to the building frame, and the opening is filled with a loosening prevention filler 20, and FIG. 9 is a longitudinal sectional view of the soundproof wall of FIG. FIG. As shown in FIGS. 8 and 9, the soundproof wall 1 is fixed to the building housing 13 with a washer plate 17, a flat washer 18, and a nut 19, and then the opening 6 is filled with a loosening prevention filler 20. The loosening of the nut 19 due to the vibration of the housing 13 can be prevented. This eliminates the need for checking the looseness of the nut 19 after the installation of the soundproof wall 1, thereby reducing the maintenance cost.

  As shown in FIG. 3, a portion other than the opening 6 of the stiffener 4 has a hollow structure, and a partition plate 7 is provided at the boundary between the opening 6 and the hollow structure. In order to prevent the hollow structure from repeatedly expanding and contracting due to changes in the outside air temperature after installation, the partition plate 7 is provided with air vent holes 8.

  As shown in FIG. 10, the hollow structure may be filled with a filler 11. In this case, the air vent hole 8 is not particularly necessary in the partition plate 7 provided at the boundary with the opening 6. The filler 11 serves as a spacer necessary for filling the inner space of the stiffener 4 when the stiffener 4 is molded, has a strength that can withstand the pressure during molding, and is as light as possible. Are preferred. The material may be, for example, thermoplastic foamed plastics such as acrylic, polypropylene, and polyimide, or thermosetting foamed plastics such as phenol and urethane.

  The stiffener 4 is provided to efficiently transmit the wind load received by the soundproof panel portion 2 to the building housing 13 via the attachment portion 3, and at least one of the stiffeners 4 is provided on the soundproof panel portion 2. It extends in the longitudinal direction.

  As shown in FIG. 11 (a), two anchor bolts 14 are embedded in the building frame 13 on the two straight lines S1 and S2 parallel to the width direction of the soundproof wall 1 at a certain interval. Alternatively, it may be embedded in a staggered pattern as shown in FIG. Moreover, as shown in FIG.11 (c), you may embed | buried in the building frame 13 on the one straight line S1 parallel to the width direction of the sound-proof wall 1. As shown in FIG. When anchor bolts 14 are embedded in a single straight building frame 13 parallel to the width direction of the soundproof wall 1, the nut 19 that has been fixed for a long time is likely to loosen. It is preferable that it is embedded above.

  The shape of the through-hole 5 provided in the attachment part 3 is not particularly limited, and can be various shapes as shown in FIGS. When the anchor bolt 14 is in FIG. 11 (a), the through hole shape shown in FIGS. 12 (a) to (f) is used. When the anchor bolt 14 is in FIG. 11 (b), FIGS. When the anchor bolt 14 is in FIG. 11C, the through hole shapes shown in FIGS. 12C, 12D, and 12K can be employed.

  FIG. 13 is a perspective view of a state in which a soundproof wall according to still another embodiment of the present invention is attached to a building frame. 14 is a longitudinal sectional view taken along the line E-E of the soundproof wall of FIG. 13, and FIG. 15 is a partially enlarged view of the vicinity of the mounting portion of the soundproof wall of FIG.

  FIG. 13 is a perspective view of a building housing as shown in FIG. 11 (c) in a state in which the soundproof wall is fixed to an anchor bolt embedded on one straight line S1 parallel to the width direction of the soundproof wall. is there.

  The soundproof panel 2 is a sandwich structure in which a core material 10 is disposed between opposing FRP skin materials 9 as shown in FIG. 5, for example, or a single piece made of an FRP skin material 9 as shown in FIG. Any of plate structures may be used. As the material of the core material 10 in the case of the sandwich structure, foamed plastic, wood, metal, pulp, a material obtained by solidifying an inorganic material with a binder, and the like can be selected, and a plate-like body, a honeycomb-like body, and the like can be selected. The material and form of the core material can be appropriately selected according to required characteristics such as acoustic characteristics, mechanical characteristics, light weight, and cost.

  As the matrix resin of the FRP layer constituting the FRP skin material 9, a thermosetting resin such as an epoxy resin, an unsaturated polyester resin, a vinyl ester resin, and a phenol resin is suitable, and a lamellar compound (for example, , Mica, molybdenum disulfide, boron nitride, etc.) and acicular compounds (eg, zonotlite, potassium titanate, carbon fibers, etc.), granular and plate-like compounds (eg, ferrite, talc, clay, etc.) Can be added. By adding a damping agent, conversion to frictional heat is achieved by the mutual movement of inorganic crystals or between the inorganic substance and the matrix. Filling the filler increases the elastic modulus and density, and reduces the kinetic energy of the vibrating object. It can be dissipated to reduce panel vibration.

  Moreover, a flame retardant (for example, aluminum hydroxide, bromine, inorganic powder etc.) can be added in said resin, and a flame retardance can be improved. Phenol resin itself is excellent in flame retardancy and is preferably used because it is inexpensive.

  In addition, the above-mentioned additives may be appropriately selected in accordance with a situation such as a place to be attached, that is, a place where fire spread due to fire is prevented and a place where vibration propagation is remarkable.

  As the reinforcing fiber for the FRP layer, inorganic fiber made of glass fiber, carbon fiber, or the like, or organic fiber such as aramid fiber, nylon fiber, polyester fiber, or the like can be used as appropriate according to the application and use conditions. Moreover, as a form of the fiber to be used, for example, a short fiber or mat having a fiber length of 1 to 3 mm, a cloth made of continuous fiber, a strand, or the like can be preferably used.

  Here, in order to obtain a lightweight and high-strength FRP layer, carbon fiber is most preferable, but in order to balance with cost, a glass fiber / carbon fiber hybrid or glass fiber is also preferable.

  Incorporation of carbon fiber improves vibration damping and is particularly suitable for use in railway viaducts. Further, any carbon fiber may be used in consideration of the high strength and elastic modulus of the carbon fiber, but it is most preferable to use a so-called large tow carbon fiber for further cost reduction. For example, the number of filaments of one carbon fiber yarn is not less than the usual 10,000, but is in the range of 10,000 to 300,000, more preferably in the range of 50,000 to 150,000. It is preferable to use a carbon fiber filament yarn in the form of a resin because it is more excellent in resin impregnation property, handling property as a reinforcing fiber substrate, and economical efficiency of the reinforcing fiber substrate. Further, if necessary or according to required mechanical properties, a reinforcing fiber base may be formed by laminating a plurality of layers of reinforcing fibers, and the reinforcing fiber base may be impregnated with a resin. . In the reinforcing fiber layer to be laminated, a fiber layer or a woven fabric layer arranged in one direction can be appropriately laminated, and the fiber orientation direction can also be appropriately selected according to the required strength direction.

  As described above, the stiffener 4 is provided so as to extend integrally from the mounting portion 3 on one side of the soundproof panel portion 2. When a wind load is applied, it is necessary to efficiently transmit the load received by the soundproof panel portion 2 to the building housing 13 via the stiffener 4 and the attachment portion 3. Therefore, it is preferable that the attachment portion 3 and / or the stiffener 4 is composed of at least an FRP layer, and at least a part of the FRP layer is extended to the FRP skin material 9 constituting the soundproof panel portion 2.

  16 is a perspective view of a soundproof wall according to still another embodiment of the present invention, FIG. 17 is a perspective view of the soundproof wall of FIG. 16 attached to a building frame, and FIG. 18 is a soundproof wall of FIG. FIG. 19 is a vertical cross-sectional view of the wall taken along the line FF, and FIG.

  In the present embodiment, the soundproof wall 1 has a skirt portion 12 extending from the soundproof panel portion 2 below the mounting portion 3 so as to cover a part of the side surface of the building housing 12 such as a viaduct. . The skirt portion 12 can prevent a part of the side surface of the concrete building case 13 from being directly exposed to rain, can prevent deterioration due to the neutralization of the concrete, and improve the durability of the building case 13 Leads to. In addition, there is an advantage that the boundary between the mounting portion 3 of the soundproof wall 1 and the building housing 13 cannot be seen from the private house side, and the appearance is improved.

  When a wind load is applied, it is necessary to efficiently transmit the load received by the skirt portion 12 to the building housing 13 via the soundproof panel portion 2. Therefore, it is preferable that the skirt portion 12 is composed of at least an FRP layer, and at least a part of the FRP layer extends to the FRP skin material 9 constituting the soundproof panel portion 2.

  As the reinforcing fiber and matrix resin of the FRP layer constituting the attachment part 3, the stiffener 4 and the skirt part 12, the reinforcing fiber and matrix resin used for the FRP skin material 9 constituting the soundproof panel part 2 can be used. The matrix resin is preferably the same matrix resin as that of the soundproof panel portion 2 in order to be integrated with the soundproof panel portion 2.

The soundproof panel 2 is intended to insulate noise from a sound source. The sound transmission loss, which is an index of the sound insulation performance, increases as the weight per unit area increases according to the mass rule, and the sound insulation performance increases. However, if the weight per unit area is increased, the weight of the soundproof wall increases, and the handleability and workability deteriorate. Therefore, it is preferable that the weight per unit area of the soundproof panel 2 is in the range of 10 to 60 kg / m ² .

  An embodiment of the soundproof wall of the present invention will be described.

[Example 1]
(1) First, a gel coat resin was sprayed onto a molded lower mold corresponding to the noise source side (railway track side) of the sound barrier 1.
(2) After the gel coat resin is in a semi-cured state, glass, chopped strands, etc. are used as the reinforcing fiber base material constituting the FRP skin material 9 on the noise source side (railway track side) of the soundproof panel portion 2 having the sandwich structure. A mat substrate and a glass / stitching / cross substrate were laminated and impregnated with resin.
(3) Next, a glass / chopped / strand / matt base material, a glass / stitching / cross base material, a carbon fiber cross base material, and a carbon fiber cloth base material, which are reinforcing fiber base materials constituting the mounting portion 3, are molded and cured in advance. A placed FRP cured plate was placed and impregnated with resin.
(4) Next, in order to form the stiffener 4 having a hollow structure, a hat-shaped cross-sectional FRP cured plate and a planar FRP cured plate, which are part of the stiffener 4 and are molded and cured in advance, are sequentially formed. Arranged.
(5) Next, wood having a specific gravity of 0.3 was disposed as the core material 10 of the soundproof panel 2.
(6) Next, a glass, chopped, strand, mat base material, glass stitching cloth base material is laminated as a reinforcing fiber base material constituting the FRP skin material 9 on the private house side of the soundproof panel portion 2, and resin Was impregnated.
(7) Thereafter, the upper mold 21b was placed and the mold was clamped to cure the resin, and the molded product was demolded.
(8) Finally, a top coat resin (a gel coat resin added with paraffin wax) is sprayed onto the surface of the FRP skin material 9 on the private side of the molded soundproof panel 2 to obtain the soundproof wall 1 of the present invention. It was.

  The soundproof wall 1 of the present invention obtained as described above has a height H = 2,000 mm, a depth D = 200 mm of the mounting portion 3, a total width W = 990 mm of the soundproof panel portion, and a width w1 = w2 = of the mounting portion. It was 240 mm. That is, the total of the widths w1 and w2 of the attachment portion 3 was 48.5% of the total width of the soundproof panel portion 2.

  Use of the grout material and the damming material for installing the soundproof wall 1 of the present embodiment and the FRP soundproof wall described in Patent Document 2 on the building viaduct of the railway viaduct and filling the gap between the mounting portion 3 and the building precursor. The amount was compared. As a result, as shown in Table 1, the usage amount of the grout material and the damming material of the soundproof wall 1 of this embodiment can be reduced by 40% and 22%, respectively, with respect to the usage amount of the FRP soundproof wall of Patent Document 2. did it.

  In addition, as a result of comparison of manufacturing costs, the soundproof wall 1 of this example was able to reduce the cost by 18% compared to the FRP soundproof wall described in Patent Document 2. Further, the mounting portion 3 is integrally formed with the soundproof panel portion 2 and the stiffener 4, so that the bolt fastening structure can be eliminated from the soundproof wall 1, and a looseness check after installation can be made unnecessary.

[Example 2]
Another embodiment of the soundproof wall of the present invention will be described.

After performing (1) and (2) in Example 1 in the same manner, the following (3 ′) to (8 ′) were subsequently performed to obtain another soundproof wall of the present invention.
(3 ′) A glass / chopped / strand / matt base material, a glass / stitching / cross base material, and a carbon fiber cross base material, which are reinforcing fiber base materials constituting the attachment portion 3, were placed and impregnated with a resin.
(4 ′) Next, a urethane foam core having a specific gravity of 0.03 was disposed as a foamed plastic to be filled in the hollow structure of the stiffener 4.
(5 ′) Next, wood having a specific gravity of 0.3 was disposed as the core material 10 of the soundproof panel 2.
(6 ') Next, a glass, chopped, strand, mat substrate, glass stitching cloth substrate is laminated as a reinforcing fiber substrate constituting the FRP skin material 9 on the private house side of the soundproof panel 2, and resin Was impregnated.
(7 ') Thereafter, the upper mold 21b was placed and the mold was clamped to cure the resin, and then the molded product was demolded.
(8 ') Finally, a top coat resin (a gel coat resin to which paraffin wax is added) is sprayed on the surface of the FRP skin material 9 on the private side of the molded soundproof panel 2 to provide the soundproof wall 1 of the present invention. Obtained.

The size of the soundproof wall 1 of the present invention thus obtained is the same as that of the soundproof wall 1 of Example 1, but the inside of the hollow structure of the stiffener is filled with urethane foam.
As a result of manufacturing cost comparison between the soundproof wall 1 of the present embodiment and the FRP soundproof wall described in Patent Document 2, the soundproof wall 1 of the present embodiment costs 19% compared to the FRP soundproof wall described in Patent Document 2. Could be reduced.

  The present invention is applicable to soundproof walls for railroads, railings, roads, etc., as well as soundproof walls installed indoors, soundproof walls against construction site noise, and coastal areas that are outdoors in corrosive environments. It can also be applied to windshields.

1: Soundproof wall 2: Soundproof panel portion 3: Mounting portion 4: Stiffener 5: Through hole 6: Opening portion 7: Partition plate 8: Air vent hole 9: FRP skin material 10: Core material 11: Filler 12: Skirt portion 13: Building housing 14: Anchor bolt 15: Damping material 16: Gap filler 17: Washer plate 18: Plain washer 19: Nut 20: Loosening prevention filler

D: Depth of soundproof panel part D ': Dimensions of the mounting part on the building housing side H: Height of soundproof panel part

Claims (11)

A soundproof wall having one or a plurality of soundproof panel portions and a mounting portion having a depth of 2 to 20% of the height of the soundproof panel portion and provided with a through hole that can be attached to a building frame. The total width of the portion is in the range of 10 to 80% of the total width of the soundproof panel portion, and a stiffener is integrally extended from the mounting portion on one side of the soundproof panel portion, and on the mounting portion side of the stiffener, A soundproof wall characterized in that the mounting portion has an opening portion opened in a substantially U-shape in a direction extending from the soundproof panel portion . The soundproof wall according to claim 1 , wherein a portion other than the opening of the stiffener has a hollow structure. The soundproof wall according to claim 2 , wherein a partition plate is provided at a boundary between the opening and the hollow structure, and an air vent hole is provided in the partition plate. The soundproof wall according to claim 2 , wherein a filler is provided inside the hollow structure, and a partition plate is provided at a boundary with the opening. The soundproof wall according to claim 4 , wherein the filler is foamed plastic. Sound barrier according to any one of claims 1 to 5, characterized in that at least one extends in the longitudinal direction of the acoustic panel portion of the stiffener. The soundproof wall according to any one of claims 1 to 6 , wherein the soundproof panel section includes a core material and an FRP skin material positioned on both sides of the core material. The soundproof wall according to any one of claims 1 to 6 , wherein the soundproof panel portion is an FRP skin material having a single plate structure. The soundproof wall according to any one of claims 1 to 8 , wherein the attachment portion and / or the stiffener is composed of at least an FRP layer. The soundproof wall according to any one of claims 1 to 9 , wherein a skirt portion covering a part of a side surface of the building enclosure is extended from the soundproof panel portion. Sound barrier of claim 1 0, characterized in that said skirt portion is constituted by at least FRP layer.

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