JP2008184803A - Frp soundproof wall, and method of mounting frp soundproof wall - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an FRP soundproof wall which is free from separation between adhesive surfaces of an FRP reinforcing member of a mounting portion and an FRP skin material even if the FRP soundproof wall is used in the outdoor environment where temperature difference is large, exerts strength and rigidity expected as specified, by unification between the two members, has excellent durability, and further has a mounting structure which allows fixing through holes to be bored in the mounting portion in the construction field depending on anchor bolts of degraded locational accuracy. <P>SOLUTION: The FRP soundproof wall is formed of an FRP solid body and the FRP skin member. The FRP solid body has an FRP soundproof panel portion, and the mounting portion having a depth equal to 2 to 20% the height of the soundproof panel portion and formed with the fixing through holes, and the mounting portion serves at least as the reinforcing member. The FRP skin material is present over a surface of the entire FRP soundproof wall, and the FRP solid body extends at least in part of an area in a width direction from the mounting portion to a lower portion of the soundproof panel. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an FRP soundproof wall provided on, for example, railroad railings or roads in order to insulate (including soundproofing) noise from a sound source.

  Conventionally, soundproof walls installed on viaducts and highways have been mainly made of inexpensive cast-in-place reinforced concrete or metal. However, cast-in-place reinforced concrete has uneven strength when it is aggregated gravel and sand that is not evenly dispersed, especially when it uses sea sand, and neutralization is promoted, and rust is generated in the rebar. In some cases, the concrete expands and cracks in the concrete, leading to the problem of concrete peeling that has become a social problem in recent years.

  Therefore, in recent years, by producing concrete soundproof walls (precast concrete soundproof walls) at factories, it has become possible to carry out high-quality and on-site construction in a short construction period (for example, see Patent Document 1). .

  However, since concrete and metal sound barriers are heavy, it is necessary to carry heavy equipment and dedicated mounting machines at the installation location, especially when the installation location is a railway viaduct. The problem is that it is difficult to bring a dedicated construction machine closer to the soundproof wall installation site from the track side, and even if it can be approached, the installation work is unavoidable due to the high altitude work from under the overhead. In particular, the installation work of the conventional very heavy noise barrier has to be a difficult and dangerous work.

  In recent years, due to overcrowding of cities, the number of houses along railways and roads has increased, and there is an urgent need to make soundproof walls higher. However, conventional concrete and metal soundproof walls have a strength design. There is a problem that the weight will increase from the surface, and the construction work including the viaduct frame will be more difficult.

  On the other hand, recently, an example in which a soundproof wall using a lighter material, for example, fiber reinforced plastic (FRP) or the like, is increasing. The soundproof wall using fiber reinforced plastic as a material has the advantages that it is easy to install due to its light weight and that there is no problem of the above-mentioned deterioration of concrete over time, and that maintenance can be simplified (for example, Patent Document 2). See also), and it seems that the number of adoption will increase in the future.

  When fiber reinforced plastic is used for the sound barrier material, from the viewpoint of handling and management of the material, and from the viewpoint of reducing work time at the construction site, carry the molded product molded at the factory directly to the construction site. It is common to construct.

However, even in the soundproof wall made of fiber reinforced plastic, the soundproof wall that has received the wind pressure transmits the force to the concrete frame via the mounting portion, and thus a large stress acts locally on the soundproof wall mounting portion. . Therefore, in many cases, a structure is used in which a metal member having high strength is partially used for the mounting portion, or a metal member is included in a fiber reinforced plastic and is reinforced by being hybridized.
In these cases, in order not to impair the merit of weight reduction by the fiber reinforced plastic, it is important to minimize the use site such as limiting the use of the metal member only to the periphery of the mounting hole.

  For example, a structure in which an upper part of a metal column body is embedded in a sandwich panel made of fiber reinforced plastic and an attachment part is provided at the lower part of the column body (see, for example, Patent Document 2, Patent Document 3, and Patent Document 4), This is a method of adopting an attachment structure in which a fiber reinforced plastic skin material is disposed on both surfaces of a metal member as a core material (see, for example, Patent Document 5).

  However, when fiber reinforced plastic and metal are integrated with resin in this way, the linear expansion coefficient of each material is different, so if a temperature difference acts, shearing force acts on the interface between different materials and peeling may occur. is there.

  In particular, in an outdoor use environment such as a soundproof wall, it is assumed that the temperature difference between the soundproof wall and the use is 50 ° C. or more.

  When peeling occurs between the fiber reinforced plastic and the metal, there is a problem that the high strength and rigidity originally designed by hybridization cannot be exhibited.

  In addition, when the mounting hole is a hybrid configuration of fiber reinforced plastic and a metal member, the interface between both members is exposed to the outdoor environment. Pre-rusting treatment (such as hot dip galvanization) of metal members is required.

Also, when installing the soundproof wall on the viaduct, etc., if the position accuracy of the anchor bolt embedded in the viaduct frame is poor, it is necessary to process and modify the through hole for fixing the soundproof wall at the site according to the anchor bolt position. However, if a high-strength metal member is partially used in the mounting part described above, or if a reinforcing structure is adopted in which the metal member is embedded in a fiber-reinforced plastic and hybridized, rust prevention such as hot dip galvanization Because there are problems such as film loss and workability on site, there are only methods such as re-installing anchor bolts or re-manufacturing custom-made products with the fixing through-hole positions aligned with the anchor bolts at the factory. It was.
JP-A-8-144227 Japanese Patent No. 3628276 JP 2003-129427 A JP 2003-155712 A JP 2003-155713 A

  An object of the present invention is to solve the above-mentioned problems of the prior art, exhibit high strength and rigidity, have little deterioration even when used in an outdoor environment, and have a large temperature difference. Even in outdoor use environments, there is no peeling on the bonding surface between the FRP reinforcing member and the FRP skin material of the mounting part, and the strength and rigidity expected from the design can be exhibited by integrating the two members. It is also possible to provide an inexpensive FRP soundproof wall that does not cause corrosion such as rust.

  It is another object of the present invention to provide an FRP soundproof wall having an attachment structure that allows a fixing through-hole to be drilled and corrected in an attachment site in accordance with an anchor bolt having poor positional accuracy.

In order to solve the above problems, the present invention employs the following configuration. That is,
(1) An FRP soundproof wall having a soundproof panel made of FRP and a mounting portion having a depth of 2 to 20% of the height of the soundproof panel and provided with a fixing through hole, The mounting portion is composed of at least a FRP solid body and an FRP skin material which are reinforcing members, the FRP skin material is present on the surface over the entire FRP soundproof wall, and the FRP solid body is at least in the width direction. A FRP soundproof wall characterized in that a part of the soundproof wall extends from a mounting portion to a lower portion of the soundproof panel.

  (2) The FRP solid body extends from the mounting portion to the lower portion of the soundproof panel over a width of 1 to 10 times the width of the throughhole in the portion near the through hole of the soundproof panel. The FRP soundproof wall according to (1), which is characterized.

  (3) The FRP soundproof wall according to (1) or (2), wherein the FRP solid body extends from the attachment portion to a lower portion of the soundproof panel portion over the entire width direction.

  (4) The FRP solid body has an axial direction in a direction parallel to the panel surface of the soundproof panel portion, and has at least a pair of opposed parallel surfaces. The FRP soundproof wall according to any one of the above.

  (5) The FRP soundproof wall according to (4), wherein the through hole is provided so as to penetrate between the pair of opposed parallel surfaces of the FRP solid body.

  (6) The FRP soundproof wall according to any one of (1) to (5), wherein the soundproof panel portion includes a core material inside the FRP skin material.

  (7) The FRP soundproof wall according to any one of (1) to (6), wherein a thickness of the attachment portion is 1 to 3% of a height of the soundproof panel portion.

(8) the weight per unit area of the panel surface of the sound insulation panel portions, FRP made soundproofing according to any of characterized in that it is in the range of ^{10~60kg / m 2 (1) ~} (7) wall.

  (9) The FRP product according to any one of (1) to (8), wherein the FRP solid and / or the matrix resin of the FRP skin material includes a flame retardant and / or a vibration damping agent. Noise barrier.

  (10) The FRP soundproof wall according to any one of (1) to (9), wherein the FRP skin material constitutes a skirt portion provided at a lower portion of the attachment portion.

  (11) The FRP soundproof wall according to (10), wherein the skirt portion has a core material inside the FRP skin material.

  (12) Insert an anchor bolt previously embedded in the building frame into the through-hole provided in the FRP soundproof wall according to any one of (1) to (11), and further fix it using a nut. The mounting method of the FRP soundproof wall characterized by these.

  (13) After fixing the through hole for fixing provided in the mounting portion of the FRP soundproof wall at the construction site, it is fixed to the building frame (1) to (11) The FRP soundproof wall mounting method according to any one of the above.

  According to the present invention, as described below, the adhesion between the reinforcing member of the soundproof wall mounting portion and the FRP skin material existing on the surface over the entire soundproof wall is greatly improved, and high strength and rigidity are exhibited. In addition, it is possible to obtain an inexpensive FRP soundproof wall with little deterioration even when used in an outdoor environment.

  By adopting a structure in which the soundproof wall of the present invention is composed of a reinforcing member that is a solid body made of FRP and an FRP skin material, and the FRP skin material exists on the surface over the entire FRP soundproof wall, The difference in coefficient of linear expansion between the reinforcing member of the attachment portion and the FRP skin material of the soundproof panel portion can be reduced.

  As a result, even in an outdoor environment with a large temperature difference, the FRP solid body and the FRP skin material do not peel off, and the strength and rigidity expected from the design are achieved by integrating the two components. be able to.

  Moreover, even when a part of the interface of the FRP skin material existing on the surface across the entire FRP solid body and the soundproof wall that is the reinforcing member of the mounting part is exposed to the outdoors, the adhesion of the interface is ensured. Therefore, rainwater or the like does not enter the inside of the mounting portion, and furthermore, since no metal member is used, there is no concern about corrosion such as rust.

  In addition, since the mounting part has an FRP solid structure composed of an FRP solid body that is a reinforcing member and an FRP skin material, the fixing through hole can be processed at an arbitrary position of the mounting part at the construction site. , The degree of freedom of attachment to the building frame is increased.

  Furthermore, since the FRP solid body, which is a reinforcing member for the mounting portion, extends from the mounting portion to the lower portion of the soundproof panel portion, the concentration of shear stress generated in the immediate vicinity of the fixing through hole provided in the mounting portion is reduced. It can be relaxed and the strength required for the soundproof wall can be secured.

  Hereinafter, an example of the best mode of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view of an FRP soundproof wall according to an embodiment of the present invention, and FIG. 2 is a longitudinal sectional view of the soundproof wall of FIG.

  3 is a perspective view of a state in which the soundproof wall of FIG. 1 is attached to the building housing 14, and FIG. 4 is a longitudinal sectional view of the soundproof wall of FIG.

  In FIG. 1, a soundproof wall 1 of the present invention comprises a soundproof panel portion 2 and a mounting portion 3 having a depth D of 2 to 20% of the height H of the soundproof panel portion 2. It consists of a panel surface 16 and a stiffener 7 that reinforces the panel surface 16, and a fixing through-hole 4 is provided in the mounting portion 3.

  In FIG. 3, the mounting portion 3 is a mounting portion for joining to the building housing 14, and the depth D of the mounting portion 3 is a bending moment generated by the wind pressure received by the soundproof panel portion 2 having a height H. A distance that can be sufficiently transmitted to the building housing 14 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 14, and if too large, the dimension D ′ of the mounting portion on the building housing 14 side corresponding to the depth D of the mounting portion 3 is also obtained. There is a problem that it is necessary to increase the size of the building, and that the building housing 14 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%.

  As shown in FIG. 2, the attachment portion 3 is composed of an FRP solid body 5 and an FRP skin material 6 that are reinforcing members, and the FRP skin material 6 exists on the entire surface of the soundproof wall 1.

  As the matrix resin of the solid substance 5 made of FRP, a thermosetting resin such as an epoxy resin, an unsaturated polyester resin, a vinyl ester resin, and a phenol resin is preferable, and a lamellar compound (for example, mica, disulfide, etc.) is contained in these resins. Damping agents such as molybdenum, boron nitride, etc.), acicular compounds (eg, zonotlite, potassium titanate, carbon fiber, 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. Such a vibration damping agent increases the vibration damping effect in proportion to the amount of addition, but if the amount added is less than 5% by volume of the total volume of the matrix resin, the vibration damping effect may be reduced. If it exceeds, the impregnation property of the matrix resin into the reinforcing fiber may be deteriorated. Therefore, the addition amount is preferably included in the total volume of the matrix resin of 5 to 70% by volume, more preferably 10 to 50% by volume. is there.

  Moreover, a flame retardant can be added in said matrix resin, and a flame retardance can be improved. Phenol resin itself is excellent in flame retardancy and is preferably used because it is inexpensive. Such a flame retardant can be appropriately selected depending on the matrix resin to be used. In addition to brominated flame retardants such as tetrabromobisphenol A and hexabromobenzene, triphenyl phosphate, cresyl phenyl phosphate, aromatic phosphate ester, aromatic It is possible to use phosphorus-based flame retardants such as group condensed phosphates, polyphosphates, red phosphorus, and inorganic flame retardants such as antimony trioxide, antimony tetroxide, antimony pentoxide, aluminum hydroxide, and magnesium hydroxide. it can. Chlorine flame retardants can also be used, but it is desirable to use them in consideration of the environment from the problem of generation of harmful substances during combustion. The flame retardant effect varies depending on the type of flame retardant, but if the added amount is less than 0.1% by weight of the total weight of the matrix resin, there is almost no flame retardant effect, and if it is 50% by weight or more, the heat resistance and light resistance are reduced. Since the physical properties may be lowered, the addition amount is preferably 0.1 to 60% by weight, more preferably 0.3 to 40% by weight.

  Note that these additives may be appropriately selected in accordance with the situation where they are attached, that is, where the spread of fire due to fire is prevented and where vibration propagation is significant.

  As the reinforcing fiber of the FRP solid body 5, an inorganic fiber made of glass fiber, carbon fiber or the like, or an organic fiber such as aramid fiber, nylon fiber, polyester fiber, or the like may be used as appropriate according to the use and use conditions. it can. 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 light weight and high strength FRP, 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 thread in the form of a resin because it is more excellent in resin impregnation property, handling property as a reinforcing fiber substrate, and economics of the reinforcing fiber substrate. Further, if necessary or according to required mechanical properties, a reinforcing fiber base is formed by laminating a plurality of layers of reinforcing fibers, and the reinforcing fiber base is 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.

  When wind pressure acts on the soundproof wall 1, a large shearing force acts on the FRP solid body 5 and the FRP skin material 6 around the through hole 4 due to a cross-sectional defect due to the fixing through hole 4 provided in the mounting portion 3. Become. In order to provide sufficient strength against the shearing force, the FRP solid body 5 extends from the mounting portion 3 to the lower portion of the soundproof panel portion 2 at least in a part in the width direction as shown in FIGS. Yes.

  FIG. 5 shows the FRP solid body 5 of the soundproof wall 1 shown in FIGS.

  As shown in FIGS. 1 to 4, the FRP solid body 5 extends from the mounting portion 3 to the lower portion of the soundproof panel portion 2 over the entire soundproof wall width direction. In this case, the shape is as shown in FIG.

FIG. 6 is a perspective view of an FRP soundproof wall according to another embodiment of the present invention, and FIG. 7 shows an FRP solid body 5 of the soundproof wall 1 of FIG. That is, as shown in FIG. 6, the FRP solid body 5 is provided with a soundproof panel from the mounting portion 3 only in the immediate vicinity of the through hole 4 where the stress concentration of the shearing force acting on the FRP solid body 5 and the FRP skin material 6 is the largest. It may extend below the portion 2. In this case, as shown in FIG. 7, the extending width Wp _{, i} is preferably 1 to 10 times the through-hole width _{Wh, i} per corresponding through-hole 4 in the nearest part.

In view of the fact that the optimum design with the minimum amount of material used can be achieved by making the concentration level of the shearing force acting on the FRP solid body 5 and the FRP skin material 6 around the through holes 4 equal in all the through holes. All of W _{h, i} (i = 1, 2,..., N) are preferably 0.9 to 1.1 times the average value of all through-hole widths = ΣW _{h, i} / n, More preferably _, W _{h and i} are all set to the same value.

The distance between adjacent through-holes _{(W h, i} of _{W h,} and _{i + 1 end, W h, i + 1} of the _{W h,} distance _i end) is too small and the through-hole width is wider Similarly to the above, the concentration degree of the shearing force acting on the FRP solid body 5 and the FRP skin material 6 around the through hole 4 is increased. In order to avoid this concentration of shearing force, the interval between adjacent through holes is preferably 1 to 50 times Wh _{, i} , more preferably 2 to 25 times.

Similarly, it is possible to achieve an optimum design that minimizes the material used by making the reinforcement degree against the shear force concentration acting on the FRP solid body 5 and the FRP skin material 6 around the through hole 4 equal in all the through holes. From the point, all of the W _{p, i} (i = 1, 2,..., N) are 0.9 to 1.1 times the average value of the total extending width = ΣW _{p, i} / n. It is preferable that all of W _{p, i} have the same value.

  As shown in FIG. 3, the FRP solid body 5, which is a reinforcing member constituting the attachment portion 3, is a panel of the soundproof panel portion 2 so that the attachment portion 3 can be securely fixed to the building housing 10. It is preferable to have an axis (X) direction in a direction parallel to the surface and to have at least a pair of opposing parallel surfaces.

  As shown in FIG. 4, among the pair of parallel surfaces of the FRP solid body 5, a building housing 10 is provided on one surface a side, and a washer 12, a nut 13, etc. are provided on the other surface b side. By arranging the fastening member, the soundproof wall can be reliably fixed to the building housing 14. In addition, although a pair of parallel surfaces said here mean the plane and plane which do not cross no matter how long it extends, unless the purpose that a soundproof wall can be fixed to the building housing 14 reliably is not impaired. Even if there is a slight inclination (for example, 5 ° or less), there is no problem.

  The through-hole 4 provided in the attachment portion 3 is provided so as to penetrate between the pair of opposed parallel surfaces of the FRP solid body 5, and as shown in FIG. The through hole 4 is inserted into an anchor bolt 11 embedded in 10, and is fixed to the building frame 10 with a washer 12 and a nut 13.

  Here, the grout material 14 can also be filled in the through hole 4 so as to fill the gap between the anchor bolt 11 so that the relative position between the mounting portion 3 and the anchor bolt 11 does not shift.

  The damming material 15 shown in FIG. 4 is for preventing the grout material 14 from leaking during filling.

  FIG. 8 is a perspective view of an FRP soundproof wall according to still another embodiment of the present invention, and FIG. 9 is a longitudinal sectional view taken along the line CC of the soundproof wall of FIG.

  FIG. 10 is a perspective view of the FRP solid body 5 of the sound barrier 1 shown in FIG.

In the soundproof wall shown in FIG. 8, the through hole 4 is circular, and one through hole is opened for one anchor bolt.
Also in this embodiment, as shown in FIG. 8, the FRP solid body 5 is easy to be molded as shown in FIG. 10 so as to extend from the mounting portion 3 to the lower portion of the soundproof panel portion 2 over the entire width of the soundproof wall. It may be a simplified shape.

  FIG. 11 is a perspective view of an FRP soundproof wall according to still another embodiment, and FIG. 12 is a perspective view of the FRP solid body 5 of the soundproof wall 1 of FIG.

  Also in this embodiment, as shown in FIG. 11, the position where the FRP solid body 5 extends from the mounting portion 3 to the lower portion of the soundproof panel portion 2 may be only the portion closest to the through hole 4 where stress is most concentrated.

And as shown in FIG. 12, it is preferable that the width W _{p, i} to be extended is 1 to 10 times the through-hole width W _{h, i} per one corresponding through-hole 4 in the nearest part.

In view of the fact that the optimum design with the minimum amount of material used can be achieved by making the concentration level of the shearing force acting on the FRP solid body 5 and the FRP skin material 6 around the through holes 4 equal in all the through holes. All of W _{h, i} (i = 1, 2,..., N) are preferably 0.9 to 1.1 times the average value of all through-hole widths = ΣW _{h, i} / n, More preferably _, W _{h and i} are all set to the same value.

The distance between adjacent through-holes _{(W h, i} of _{W h,} and _{i + 1 end, W h, i + 1} of the _{W h,} distance _i end) is too small and the through-hole width is wider Similarly to the above, the concentration degree of the shearing force acting on the FRP solid body 5 and the FRP skin material 6 around the through hole 4 is increased. In order to avoid this concentration of shearing force, the interval between adjacent through holes is preferably 1 to 50 times Wh _{, i} , more preferably 2 to 25 times.

Similarly, it is possible to achieve an optimum design that minimizes the material used by making the reinforcement degree against the shear force concentration acting on the FRP solid body 5 and the FRP skin material 6 around the through hole 4 equal in all the through holes. From the point, all of the W _{p, i} (i = 1, 2,..., N) are 0.9 to 1.1 times the average value of the total extending width = ΣW _{p, i} / n. It is preferable that all of W _{p, i} have the same value.

  As described above, the shape of the through hole 4 provided in the attachment portion 3 is not particularly limited, such as a circle, an ellipse, and a rectangle.

  In FIG. 4, the attachment portion 3 is composed of an FRP solid body 5 and an FRP skin material 6, and the FRP skin material 6 exists on the entire surface of the soundproof wall 1. Thereby, the wind load received by the soundproof panel portion 2 can be transmitted to the mounting portion 3.

  The reinforcing fiber and matrix resin used for the FRP solid body 5 can be used as the reinforcing fiber and matrix resin of the FRP skin material 6, but since the matrix resin is integrated with the FRP solid body 5, the FRP medium The matrix resin is preferably the same as the entity 6.

  The thickness of the mounting portion 3 of the FRP soundproof wall according to the present invention is preferably 1 to 5% of the height of the soundproof panel, and more preferably 1 to 3%. If the thickness of the mounting portion exceeds 5%, the material cost and molding cost for molding the FRP solid body 5 may increase. On the other hand, when the thickness of the mounting portion 3 is 1% or less, the mounting portion may not have sufficient strength to transmit the load due to the wind pressure received by the soundproof panel portion 2 to the building housing 14.

The soundproof panel 2 is intended to insulate noise from the sound source. The sound transmission loss, which is basically an index of 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 1 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 .

  The soundproof panel portion 2 is either a sandwich structure in which the core material 8 is disposed between the opposing FRP skin materials 6 as shown in FIG. 4 or a single plate structure of the FRP skin material 6 as shown in FIG. It may be. As the material of the core material 8 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 8 can be appropriately selected according to required characteristics such as acoustic characteristics, mechanical characteristics, lightness, and cost.

  FIG. 14 shows a soundproof wall 1 according to still another embodiment of the present invention, and FIG. 15 shows a longitudinal sectional view taken along line EE in FIG. In the present embodiment, the soundproof wall 1 has a skirt portion 9 below the attachment portion 3 so as to cover the vertical surface of the building housing 10 such as a viaduct.

  The skirt portion 9 is constituted by the FRP skin material 6 existing on the surface over the entire soundproof wall 1. The skirt portion 9 may have a structure having a core material inside the FRP skin material 6 as shown in FIG. 15, a so-called sandwich structure, or an FRP single plate structure without a core material as shown in FIG. 16. it can. The skirt portion 9 is also subjected to wind pressure in the same manner as the soundproof panel portion 2, and a large bending load acts on the root of the skirt portion 9, so that it is more preferable to have a sandwich structure capable of designing the material efficiently with respect to the bending load.

  The vertical surface of the concrete building frame 10 can be prevented from being directly exposed to rainfall by the skirt portion 9, deterioration due to neutralization of the concrete can be prevented, and the durability of the building frame 10 can be improved. . In addition, there is an advantage that the boundary between the mounting portion 3 of the soundproof wall 1 and the building housing 10 is not visible from the private house side, and the appearance is improved.

  3, 4, 13, 14, 15, and 16 show examples of a structure for attaching the soundproof wall 1 to the building housing 10 such as a viaduct. For example, the mounting portion 3 of the soundproof wall 1 is fixed to the building housing 10 by anchor bolts 11, washers 12 and nuts 13 provided in advance in the building housing 10.

  In the case where the anchoring accuracy of the anchor bolt provided in the building housing 10 is poor or the arrangement pitch is special, after processing the fixing through hole 4 at the construction site according to the position of the anchor bolt, The soundproof wall 1 may be fixed to the building housing 10.

  Examples of the above-described soundproof wall of the present invention will be described.

  The FRP solid body 5 is formed by a hand lay-up molding method using an unsaturated polyester resin in which 30 wt% of aluminum hydroxide is added to the matrix resin as a flame retardant to the sound barrier in FIGS. 1 and 2. A soundproof wall 1 was formed.

  First, an FRP solid body 5 having an L-shaped cross section with the following configuration was formed.

  (1) Glass strand mat substrate 1 and (2) carbon fiber woven substrate 1 are arranged in this order on the lower mold of the mold of FRP solid body 5 having an L-shaped cross section, 3) Eleven glass strand mat substrates 1 and 10 glass roving fabric substrates 1 were alternately arranged, and then (4) carbon fiber fabric substrate 1 and (6) glass strand mat substrate 1 were arranged. did. An FRP solid body 5 having a shape shown in FIG. 17 was obtained by placing and pressing a molding upper die of the FRP solid body 5 thereon.

  The soundproof wall 1 was formed with the following configuration.

  A flame-retardant gel coat resin is applied to the mold of the soundproof wall 1, and (1) a glass strand mat substrate 1, (2) a glass roving fabric substrate 1, and (3) a glass strand mat substrate 1 as a reinforcing fiber substrate. (4) The glass strand mat base material 1 was placed in this order, and the resin was impregnated to obtain an FRP skin material 6. On top of that, a wood core with a specific gravity of 0.3 as a core material 8 is disposed on the soundproof panel 2, and an FRP solid body 5 previously formed is disposed on the mounting portion 3.

  Furthermore, (5) Glass 0 / ± 45 ° / Strand mat base material 1 and (6) Carbon fiber woven base material 1 × 2 sheets are provided on both sides of the surface where the through holes for mounting the FRP solid body 5 are provided. After placing, the (4) glass strand mat base material 1, (3) glass strand mat base material 1, (2) glass roving fabric base material 1, (1) glass strand mat base material 1 placed in order are folded in order. And arranged so as to cover the mounting portion 3.

  Then, as the FRP skin material on the opposite side, (7) glass strand mat substrate 1, (8) glass strand mat substrate 1, (9) glass roving fabric substrate 1, (10) glass strand mat substrate Material 1 was placed and impregnated with resin.

  Finally, the upper mold was set, the inside of the mold was decompressed to cure the resin, and then the molded product was removed from the mold to obtain the soundproof wall 1.

The reason why the carbon fiber woven fabric base material is arranged on both sides of the surface of the FRP solid body 5 where the through holes are provided is to prevent the mounting portion 3 from being bent and deformed when the soundproof wall 1 receives a wind load. is there.
The FRP soundproof wall 1 of the present invention obtained as described above has a height H of the soundproof panel portion 2 as shown in FIG. 18 of 1690 mm, a width of 1030 mm, a thickness of 20 mm, and a depth of the mounting portion 3 of 190 mm. The height was 25 mm and the weight was 55 kg.

  Table 1 shows the results of evaluating the strength of the FRP soundproof wall thus obtained by the following method.

  A large universal testing machine (Servo-Pulser EHF-UG300KN-manufactured by Shimadzu Corporation) is fixed to the gantry in the same manner as the mounting to the actual building frame 10 so that the panel surface 16 of the soundproof panel 2 is in the horizontal direction. 140L type), a compressive load was applied to the center of the height of the soundproof panel 2 from vertically above, and the load at break (maximum load) was measured.

  For comparison, the FRP soundproof wall and the soundproof panel portion 2 have substantially the same height H, width, and depth of the attachment portion, and the FRP skin in which the attachment portion 3 exists on the entire surface of the soundproof wall. A conventional FRP soundproof wall made of a material 6 and a metal member (rectangular steel pipe) enclosed in the FRP skin material 6 and having a height of the mounting portion 3 of 89 mm is manufactured. The results of measuring the load are shown in Table 1.

  The FRP soundproof wall according to the present invention has a strength of 15.3 kN required for the soundproof wall, and it is not necessary to use a hybrid configuration of a fiber reinforced plastic and a metal member as a mounting part disadvantageous for use in an outdoor environment. It was found that the strength could be secured.

  In addition, the FRP soundproof wall of the present invention was able to be processed by using a simple tool for mounting through holes at the soundproof wall installation site after manufacturing the factory.

  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.

It is a perspective view of one embodiment concerning the FRP soundproof wall of the present invention. It is a longitudinal cross-sectional view of the soundproof wall of FIG. 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 perspective view of the solid body made from FRP of FIG. It is a perspective view of the soundproof wall concerning the other embodiment of the FRP soundproof wall in this invention. It is a perspective view of the solid body made from FRP of FIG. It is a perspective view of the soundproof wall concerning further another embodiment of the FRP soundproof wall in this invention. It is a longitudinal cross-sectional view of the soundproof wall of FIG. It is a perspective view of the solid body made from FRP of FIG. It is a perspective view of the soundproof wall concerning further another embodiment of the FRP soundproof wall in this invention. It is a perspective view of the solid body made from FRP of FIG. It is a longitudinal cross-sectional view which shows the cross-sectional form which concerns on the further another embodiment of the FRP soundproof wall in this invention. It is a perspective view of the state which attached the soundproof wall which concerns on the further another embodiment of the FRP soundproof wall in this invention to the building frame. It is a longitudinal cross-sectional view of the EE arrow of the soundproof wall of FIG. It is a longitudinal cross-sectional view which shows the cross-sectional form of the state which attached the soundproof wall concerning the further another embodiment of the FRP soundproof wall in this invention to the building frame. The solid body made from FRP which concerns on one Example of the soundproof wall made from FRP in this invention is shown. The soundproof wall concerning one Example of the FRP soundproof wall in this invention is shown.

Explanation of symbols

1: FRP soundproof wall 2: Soundproof panel part 3: Mounting part 4: Through hole 5: FRP solid body 6: FRP skin material 7: Stiffener 8: Core material 9: Skirt part 10: Building frame 11: Anchor bolt 12: washer 13: nut 14: grout 15: dam member 16: front panel D: depth D of the acoustic panel portion ': dimensions of the mounting portion of the building skeleton side H: soundproofing panel height W _h: penetration Hole width W _p : The width of the part extending from the FRP solid mounting part to the bottom of the soundproof panel

Claims (13)

A soundproof wall made of FRP having a soundproof panel made of FRP and a mounting part having a depth of 2 to 20% of the height of the soundproofing panel part and provided with a fixing through hole. Is composed of at least a reinforcing member made of FRP and an FRP skin material, the FRP skin material is present on the entire surface of the FRP soundproof wall, and the solid body made of FRP is at least partly in the width direction. A soundproof wall made of FRP, which extends from a mounting portion to a lower portion of a soundproof panel. The FRP solid body extends from the mounting portion to the lower portion of the soundproof panel over a width of 1 to 10 times the width of the throughhole in the portion near the through hole of the soundproof panel. The FRP soundproof wall according to claim 1. The FRP soundproof wall according to claim 1 or 2, wherein the FRP solid body extends from the mounting portion to a lower portion of the soundproof panel portion over the entire width direction. The said FRP solid body has an axial direction in the direction parallel to the panel surface of the said soundproof panel part, and has at least a pair of opposing parallel surface, The Claim 1 characterized by the above-mentioned. FRP sound barrier. 5. The FRP soundproof wall according to claim 4, wherein the through hole is provided so as to penetrate between the pair of parallel parallel surfaces of the FRP solid body. The FRP soundproof wall according to any one of claims 1 to 5, wherein the soundproof panel portion has a core material inside the FRP skin material. The FRP soundproof wall according to any one of claims 1 to 6, wherein a thickness of the mounting portion is 1 to 3% of a height of the soundproof panel portion. The weight per unit area of the panel surface of the sound insulation panel portions, FRP made soundproof wall according to claim 1, characterized in that in the range of 10~60kg / m ^2. The FRP soundproof wall according to any one of claims 1 to 8, wherein the FRP solid body and / or the matrix resin of the FRP skin material includes a flame retardant and / or a vibration damping agent. The FRP soundproof wall according to any one of claims 1 to 9, wherein the FRP skin material constitutes a skirt portion provided at a lower portion of the attachment portion. The FRP soundproof wall according to claim 10, wherein the skirt portion has a core material inside the FRP skin material. An FRP characterized in that an anchor bolt embedded in a building frame in advance is inserted into the through hole provided in the FRP soundproof wall according to any one of claims 1 to 11, and further fixed with a nut. How to install the sound barrier. The fixing through-hole provided in the mounting portion of the FRP soundproof wall is drilled at a construction site, and then fixed to the building frame. FRP soundproof wall mounting method.

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