JP3692686B2 - FRP structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an FRP structure, and more particularly to an FRP structure suitable as a roofing material or a wall material.
[0002]
[Prior art]
As roofing materials and wall materials, steel plates, concrete, wood, etc. are generally used.
[0003]
When such materials are used, especially when steel or concrete is used, if the shape is large, the weight per unit area will increase, and it will be necessary to increase the strength of the building itself. Structurally, there is a risk of increasing the construction cost.
[0004]
In addition, it is generally difficult to adopt a complicated shape with the materials as described above, which is subject to design restrictions. Moreover, when it makes it a complicated shape, the mold cost etc. will soar.
[0005]
Furthermore, with the materials as described above, it is difficult to completely eliminate the problem of corrosion. In particular, in the case of a metal typified by steel, expensive countermeasures against corrosion are unavoidable.
[0006]
[Problems to be solved by the invention]
An object of the present invention is to provide an inexpensive FRP structure that is lightweight but has sufficiently high strength and rigidity, is easy to manufacture, can easily adopt complicated shapes, and can completely eliminate the possibility of corrosion. Is to provide.
[0007]
In addition, the structure can be easily connected, and each unit can be constructed as a small unit convenient for transportation and handling, and a desired roof or wall can be easily constructed by connecting the units together. It is an object to provide an FRP structure.
[0008]
[Means for Solving the Problems]
In order to solve the above-described problems, an FRP structure according to the present invention includes a pair of FRP panels coupled to each other that form a cavity therebetween, and fixed to each of the pair of FRP panels. The FRP structure having a reinforcing member extending in parallel with each other is defined as one unit, and a plurality of the units are connected at least in the extending direction of the cavity, and a partition plate is provided at a connecting portion between the units. It consists of what is characterized by this.
[0009]
In this FRP structure, the pair of FRP panels may be formed separately, and the pair of FRP panels may be joined together, or the pair of FRP panels may be integrally formed.
[0010]
The reinforcing member is made of a metal such as a steel plate, and the width of the reinforcing member is preferably ½ or less of the width of one FRP panel from the viewpoint of reducing the overall weight.
[0011]
As a method of fixing the reinforcing member to the FRP panel, each reinforcing member may be fixed on the surface of each FRP panel via an appropriate fixing member (for example, a bolt or a rivet). You may make it embed. In the case of embedment, it may be embedded in the FRP panel by being integrally formed with the FRP panel, and a reinforcing member is arranged on the surface of the FRP panel, which is overlaid by another FRP layer or the like. You may make it embed in.
[0012]
Moreover, although a pair of FRP panel consists of a composite material of a reinforced fiber and matrix resin, desired strength and rigidity can be taken, ensuring lightweightness by arrange | positioning a reinforced fiber appropriately. For example, by arranging the fibers at an angle in a range of ± 30 ° to ± 60 ° with respect to the extending direction of the cavity, high strength and rigidity can be exhibited against the shearing force in the extending direction of the cavity. . Further, by arranging the fibers at an angle in the range of 0 ° to ± 10 °, high strength and rigidity can be exhibited in the extending direction of the cavity. In addition, by arranging it at an angle in the range of ± 80 ° to ± 90 °, high strength and rigidity can be expressed in the direction perpendicular to the extending direction of the cavity, and the cross section of the FRP structure The shape can be held in a predetermined shape. Moreover, the reinforcing fiber which consists of a chopped fiber can also be distribute | arranged at random with the reinforcing fiber with the above directivity, or independently.
[0013]
As such a reinforcing fiber, for example, at least one of carbon fiber, glass fiber, aramid fiber and the like can be used. Glass fiber is preferred when translucency is required to some extent. In addition, when translucency or daylighting performance is required, a hole may be appropriately formed in each FRP panel, and the hole can have a function such as drainage.
[0014]
Further, as the resin used for the FRP panel, either a thermosetting resin or a thermoplastic resin can be used. In particular, when the FRP structure of the present invention is used as a roofing material or a wall material of a building, it is preferable to use a flame retardant resin or a resin containing it.
[0015]
In addition, a partition plate extending between the pair of FRP panels is provided in the cavity . The partition plate is not particularly limited as long as it is a lightweight member, but can be made of FRP like the pair of FRP panels. The partition plate may be appropriately disposed at one end portion, both end portions, the center portion, etc. of the pair of FRP panels in the extending direction of the cavity, and at least one partition plate may be provided. As a method of connecting the partition plate and the FRP panel, in addition to the connection using bolts and rivets, bonding by an adhesive may be used. In addition, holes may be appropriately formed in the partition plate as needed, and the shape of the partition plate may be either a shape that covers substantially the entire cross section of the cavity or a shape that partially covers it.
[0017]
The FRP structure according to the present invention as described above can have a structure that can be easily connected, and can constitute an FRP structure that connects them.
[0018]
That, FRP structure according to the present invention, the unit of the FRP structure as described above, consists of those multiple coupled laterally.
[0019]
The units may be directly connected via bolts, rivets, or an adhesive, or may be connected via a connecting member.
[0020]
Moreover, the same partition plate as the above can also be provided in the connection part of units .
[0021]
When a plurality of units are connected in this way, even if each unit is small, a structure having a wide area can be formed, and a roof or wall having a desired size and shape can be formed.
[0022]
In the FRP structure according to the present invention as described above, since the main constituent member is a pair of FRP panels or a solid FRP panel, it can be configured as a lightweight structure as a whole. In particular, in the case of using a pair of FRP panels, since a cavity is formed between them, the structure is highly rigid and has a thickness, so that the structure provides a sense of security in terms of strength and rigidity. Further, since the reinforcing member is partially extended efficiently in the cavity extending direction or in the longitudinal direction of the FRP panel, the overall strength and rigidity can be effectively improved while suppressing an increase in weight. In particular, the strength and rigidity in the cavity extending direction and the longitudinal direction of the FRP panel can be improved efficiently.
[0023]
Since it is made of FRP, it is possible to manufacture a molding die at a lower cost than that of steel or the like, and since a resin die is used, it is possible to easily cope with complicated shapes, and the degree of freedom in design is greatly improved. Further, since the FRP has substantially no problem of corrosion, the risk of corrosion in steel, concrete, wood, etc. is eliminated, and countermeasures against corrosion are substantially unnecessary.
[0024]
If a partition plate is provided, the strength and rigidity can be further improved, and the cross-sectional shape of the pair of FRP panels forming the cavity can be maintained, and a stable structure can be realized for a long time.
[0025]
Further, by providing individual FRP structures as unit structures that can be connected to each other, transportation and handling become extremely easy and convenient. By connecting these units to form an FRP structure of a desired size and shape, it is possible to easily complete a target roof body or wall body while ensuring ease of construction and assembly.
[0026]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the FRP structure of the present invention will be described with reference to the drawings.
FIG. 1 shows an FRP structure according to an embodiment of the present invention, and shows a structure in which a plurality of units are connected vertically and horizontally. FIG. 2 shows one FRP structure unit in the structure of FIG.
[0027]
In FIG. 1, reference numeral 1 denotes one unit of an FRP structure, and a plurality of FRP structure units 1 are connected vertically and horizontally to form an FRP structure 2 as a connection structure. First, the FRP structure 1 as one unit will be described with reference to FIG.
[0028]
The FRP structure 1 is fixed to each of a pair of upper and lower FRP panels 4a and 4b and a pair of FRP panels 4a and 4b, which form a cavity 3 therebetween, and with respect to the extending direction 5 of the cavity 3. And reinforcing members 6a and 6b extending in parallel directions. The reinforcing members 6a and 6b are made of a steel plate in this embodiment, but may be made of other materials, and are preferably made of a material having higher rigidity and strength than the FRP panels 4a and 4b. .
[0029]
Each of the pair of FRP panels 4a and 4b has a substantially U-shaped cross section that opens on one side, and has flange portions 7 on both sides, and the opposing flange portions 7 of both members are coupled to each other, A cavity 3 is formed between them. In this embodiment, each reinforcing member 6a, 6b is provided one by one for each FRP panel 4a, 4b, and each reinforcing member 6a, 6b is in the width direction on the inner surface of the corresponding FRP panel 4a, 4b. It is fixed at the center.
[0030]
The cross-sectional shape of the reinforcing members 6a and 6b is not particularly limited, and can be appropriately determined in consideration of the reinforcing effect, the overall weight, and the like. For example, as shown in FIG. 3, a reinforcing member 6a (6b) (b) having a strip-like flat plate shape, a reinforcing member 8 (b) having a hollow rectangular cross-sectional shape, a reinforcing member 9 (c) having a U-shaped cross-sectional shape, What is necessary is just to employ | adopt suitably the reinforcement member 10 (d) of L-shaped cross-sectional shape.
[0031]
In this embodiment, the reinforcing member 6a (6b) is fixed on the inner surface of the FRP panel 4a (4b) via a fixing member 11 made of bolts or rivets, as shown in FIG. However, this fixing may be performed by bonding with an adhesive.
[0032]
Further, as shown in FIG. 5 (a), the reinforcing member 6a can be embedded and fixed by integrally forming the reinforcing member 6a with the FRP panel 12, that is, by embedding the reinforcing member 6a at the time of FRP molding. In addition, as shown in FIG. 5B, the reinforcing member 8 is disposed on the surface of the FRP panel 13, and an FRP layer is further overlaid thereon (overlay layer 14), which is substantially embedded in the FRP member. It is good also as composition to do.
[0033]
The FRP panels 4a and 4b are made of a composite material of reinforcing fibers and a matrix resin. Molding is performed using a resin mold, and it is preferable to arrange a plurality of layers of reinforcing fibers as appropriate during molding. As the layer configuration of the reinforcing fibers, a configuration in which the reinforcing fiber layers arranged in one direction are laminated so as to have different orientation directions, or a configuration in which reinforcing fibers made of chopped fibers are randomly arranged, or These combined configurations can be employed.
[0034]
As the orientation direction of the reinforcing fiber, for example, as shown in FIG. 6, the angle θ with respect to the cavity extending direction 5 is in the range of ± 30 ° to ± 60 °, 0 ° to ± 10 °, ± 80 ° to 90 °. It is preferable to set to enter. When the orientation direction of the reinforcing fibers 50 is set to ± 30 ° to ± 60 °, high strength and rigidity can be expressed with respect to the shearing force in the extending direction 5 of the cavity. In the case of 0 ° to ± 10 °, high strength and rigidity can be expressed in the extending direction 5 of the cavity. In addition, when the angle is set to ± 80 ° to 90 °, high strength and rigidity can be expressed in the direction perpendicular to the extending direction 5 of the cavity, and the FRP cross-sectional shape is maintained in a predetermined shape. It is valid.
[0035]
The type of reinforcing fiber is not particularly limited, but carbon fiber and aramid fiber are preferable when strength and rigidity are more important, and glass fiber is preferable when translucency is required. Moreover, it can also be set as the mixing structure of various reinforcing fibers, and a hybrid structure as needed.
[0036]
The matrix resin is not particularly limited, and any of thermosetting resins such as epoxy resins, phenol resins and unsaturated polyester resins, and thermoplastic resins such as polyester resins, polyolefin resins and nylon resins can be used. In particular, when used as a roofing material or a wall material, it is preferable to use or mix a flame retardant resin containing a flame retardant.
[0037]
1 and 2 and FIG. 7 again, the FRP structure 1 of the present embodiment has a partition plate 15 extending in the cavity 3 between the inner surfaces of the pair of FRP panels 4a and 4b. Is provided. In the present embodiment, the partition plate 15 is a fixing member such as a bolt or a rivet on the flange portion 16 formed at the end of the FRP panels 4a and 4b in the cavity extending direction and extending inward of the cavity 3. 17 is fixed. This fixing may be performed by bonding with an adhesive. The partition plate 15 and the flange portion 16 are cut out at portions corresponding to the arrangement portions of the reinforcing members 6a and 6b. The material of the partition plate 15 is made of FRP in this embodiment, but may be formed of other lightweight materials, particularly lightweight, high strength and high rigidity materials.
[0038]
In the FRP structure 1 described above, the pair of FRP panels 4a and 4b are separately formed and joined together. For example, as shown in FIG. It is also possible to make an FRP structure 20 in which 19a and 19b are integrally formed.
[0039]
Further, when the FRP structure as one unit is long, for example, as shown in FIG. 9, an FRP structure 23 in which a plurality of partition plates 21 a, 21 b, and 21 c are arranged in a cavity 22 may be used. The arrangement positions of the partition plates 21a, 21b, and 21c may be, for example, both end portions and the central portion in the extending direction of the cavity 22.
[0040]
Further, in the FRP structure unit 1 and the unit-connected FRP structure 2 shown in FIGS. 1 and 2, the pair of FRP panels 4a and 4b form the cavity 3 having a closed cross section. The pair of FRP panels 4a and 4b may be appropriately perforated as necessary. By making the holes, the FRP structures 1 and 2 can be provided with daylighting and drainage.
[0041]
The FRP structure 1 as a unit having the above-described configuration is formed into an FRP structure as a connection structure having a desired area by connecting a plurality of the FRP structure units 1 in at least one vertical and horizontal directions. it can. The FRP structure 2 shown in FIG. 1 shows a part of a connection structure when a plurality of FRP structure units 1 are connected in both vertical and horizontal directions.
[0042]
In the structure shown in FIG. 1, the FRP structures 1 are directly connected in the extending direction 5 of the cavity 3, and the flange portions 7 are connected in the direction orthogonal to the extending direction 5 of the cavity 3. They are abutted and connected via a connecting member 24.
[0043]
The structure of the connecting portion in the cavity extending direction 5 between the FRP structures 1 can be configured as shown in FIGS. 10 (A), (B), and (C), for example. In the structure shown in FIG. 10 (a), the FRP panels 4a (4b) are connected to each other via a fixing member 17 such as a bolt or a rivet with the partition plate 15 interposed between the flange portions 16. It is connected. In the structure shown in FIG. 10 (b), the partition plate 15 is disposed on the inner surface side of the flange portion 16 of one FRP panel 4a (4b), the flange portions 16 are directly abutted, and the flange portions 16 and the partition plate 15 are connected via a fixing member 17. In the structure shown in FIG. 10C, the flange portion is not provided at the end of the FRP panel 25a, and a partition plate 27 having a flange 26 is used instead. By fixing the ends of 25a and 25a with the fixing member 28, the FRP panels 25a are connected to each other. In addition to these, for example, in the case of a structure in which the partition plate is not disposed in the connecting portion, adjacent FRP panels can be connected to each other by joining by fixing or adhesion.
[0044]
In the present embodiment, as shown in FIG. 11, the ends of the flange portions 7 of the adjacent FRP panels 4a and 4b are brought into contact with each other in the structure of the connecting portion in the direction orthogonal to the cavity extending direction 5 between the FRP structures 1. By fixing the connecting member 24 made of a strip-shaped flat plate having a width extending between the flange portions 7 and extending in the cavity extending direction, and the flange portions 7 by fixing members 29 such as bolts and rivets. The FRP structures 1 are connected to each other.
[0045]
By such connection, a roof body or wall body having a desired area can be easily configured.
[0046]
In the FRP structures 1 and 2 as described above, since the main constituent members are a pair of FRP panels 4a and 4b, the weight can be significantly reduced compared to conventional steel and concrete, and the weight is sufficiently reduced to about half. Is possible. Further, since the cavity 3 is formed between the pair of FRP panels 4a and 4b, the structure has high strength and high rigidity, and the structure is thick, so that the appearance is also profound. be able to. And since reinforcement member 6a, 6b is partially provided with respect to a pair of FRP panel 4a, 4b, sufficiently high intensity | strength and rigidity can be ensured, ensuring lightweightness. Therefore, in this FRP structure 1, and further in the FRP structure 2 in which a plurality of FRP structures 1 are connected, extremely high strength and rigidity can be exhibited particularly with respect to a plane load, and when used as a roof body. High enough strength and rigidity against wind pressure, snow load, wind pressure when used as a wall.
[0047]
If the orientation of the reinforcing fibers in the FRP panels 4a and 4b is appropriately set, higher strength and rigidity can be realized. In addition, sufficient consideration can be given to strength and rigidity in each direction.
[0048]
In addition, it is an FRP structure having FRP panels 4a and 4b as main components. Since the FRP panels 4a and 4b are formed using a resin mold, they can be manufactured at a lower cost than molding of steel or the like and have a complicated shape. Can be easily accommodated. Therefore, the degree of freedom in design can be greatly improved, and the shape of the FRP panel can take a wide variety of shapes as will be described later in a modification.
[0049]
Further, since it is an FRP structure, there is no problem of corrosion as in steel, concrete, wood, etc., and countermeasures for corrosion are substantially unnecessary, so that it is possible to manufacture and construct at a lower cost. Therefore, the coating usually applied as a countermeasure against corrosion may be applied only from the viewpoint of appearance, and can be suppressed to the minimum necessary.
[0050]
Moreover, if it is set as the structure which arrange | positions the partition plate 15, the intensity | strength and rigidity of FRP structure 1, 2 can be improved further, and the cross-sectional shape of each FRP structure 1 can be hold | maintained to a predetermined shape. Therefore, it is possible to obtain a stable building without deformation over a long period of time.
[0051]
Furthermore, since the several FRP structure 1 can be connected easily, the roof body and wall body of a desired area can be constructed easily. Since the FRP structure 1 as a unit used for construction may be relatively small, both portability and handling are extremely good, and transportation and construction on site are easy.
[0052]
In addition, about the cross-sectional shape of the FRP structure 1, it is not restricted to what was shown in the said Example, Various shapes can be taken. For example, in the example shown in FIG. 12, FRP panels 31a and 31b having a substantially semicircular cross section are coupled to each other to form an FRP structure 34 in which a substantially circular partition plate 33 is provided in the formed cavity 32. An FRP structure 35 having a structure in which a plurality of structures 34 are connected is shown. In the example shown in FIG. 13, FRP panels 41a and 41b having a mountain-shaped cross section are connected to each other to form an FRP structure 44 in which a square partition plate 43 is provided in a formed cavity 42. A plurality of FRP structures 45 connected to each other are shown. In addition to the structures shown in FIG. 1, FIG. 12, and FIG. 13, it is also possible to make each FRP panel into a curved or corrugated structure, and various shapes are adopted as necessary in terms of structure and design. obtain.
[0056]
Thus, the FRP structure according to the present invention, which is lightweight, high-strength, high-rigidity, has no problem of corrosion, is convenient for transportation, handling, assembly, construction, and has a great degree of freedom in design, It is extremely suitable for use in roofs and walls, various windproof structures and snowproof structures, and various buildings.
[0057]
【The invention's effect】
As described above, according to the FRP structure of the present invention, the structure having the FRP panel and the reinforcing member that form a pair of cavities is lightweight, high-strength, high-rigidity, has a profound feeling, and has corrosion resistance. A structure suitable for roofs and walls that is free from problems and that is extremely easy to transport, handle, assemble, and work, and that can be easily taken into complex shapes with a high degree of design freedom. Can be provided.
[0058]
In addition, even in the case of a configuration using a solid FRP panel that does not form a cavity, similarly, it is lightweight, high-strength, high-rigidity, has a profound feeling due to the shape such as curvature, and has no problem of corrosion, In addition, it is possible to provide a structure suitable for a roof body or a wall body at a low cost, which is very easy to transport, handle, assemble, and construct, and that can easily adopt complicated shapes with a high degree of freedom in design.
[0059]
In addition, the partition plate arrangement structure can provide an FRP structure that is further excellent in strength, rigidity, and shape retention.
[Brief description of the drawings]
FIG. 1 is a perspective view of an FRP structure according to an embodiment of the present invention.
FIG. 2 is an enlarged perspective view of an FRP structure for one unit of the structure of FIG. 1;
FIG. 3 is a cross-sectional view showing various structural examples of a reinforcing member.
4 is an enlarged partial cross-sectional view of a reinforcing member mounting portion in the FRP structure of FIG. 2. FIG.
FIG. 5 is a cross-sectional view showing another reinforcing member joining structure.
6 is a schematic perspective view showing an example of arrangement of reinforcing fibers in the FRP panel of the FRP structure shown in FIG.
7 is an enlarged partial cross-sectional view of a partition plate mounting portion of the FRP structure of FIG.
FIG. 8 is a schematic perspective view of an FRP structure showing an example in which a pair of FRP panels are integrally formed.
FIG. 9 is a schematic perspective view of an FRP structure showing an example in which a plurality of partition plates are provided.
FIG. 10 is a cross-sectional view showing various structural examples of a connecting portion between FRP structures in the cavity extending direction.
11 is an enlarged front view of a connecting portion between FRP structures in a direction orthogonal to a cavity extending direction in the FRP structure of FIG. 1;
FIG. 12 is a front view of an FRP structure having another shape.
FIG. 13 is a front view of an FRP structure having yet another shape.
[Explanation of symbols]
1, 20, 23, 34, 44 FRP structure (unit)
2, 35, 45 FRP structure as connecting structure 3, 18, 22, 32, 42 Cavity 4a, 4b, 12, 13, 25a, 31a, 31b, 41a, 41b FRP panel 5 Cavity extending direction 6a, 6b , 8, 9, 10 Reinforcing member 7 Flange part 11, 17, 28, 29 Fixing member 14 Overlay layer 15, 21a, 21b, 21c, 27, 33, 43 Partition plate 16 Flange part 19a, 19b FRP panel part 24 Connection Material 26 Flange 50 Reinforcing fiber

Claims (20)

A unit comprising an FRP structure having a pair of FRP panels coupled to each other forming a cavity therebetween, and a reinforcing member fixed to each of the pair of FRP panels and extending in parallel with the extending direction of the cavity And a plurality of the units are connected at least in the extending direction of the cavity, and a partition plate is provided at a connecting portion between the units .   The FRP structure according to claim 1, wherein the pair of FRP panels are formed separately, and the pair of FRP panels are coupled to each other.   The FRP structure according to claim 1, wherein the pair of FRP panels are integrally formed.   The FRP structure according to any one of claims 1 to 3, wherein a width of the reinforcing member is ½ or less of a width of one FRP panel.   The FRP structure according to claim 1, wherein the reinforcing member is made of metal.   The FRP structure according to claim 1, wherein the reinforcing member is fixed on a surface of each FRP panel.   The FRP structure according to any one of claims 1 to 5, wherein the reinforcing member is embedded in each FRP panel.   The FRP structure according to any one of claims 1 to 7, wherein the pair of FRP panels are provided with reinforcing fibers at an angle in a range of ± 30 ° to ± 60 ° with respect to an extending direction of the cavity. body.   The FRP structure according to any one of claims 1 to 7, wherein the pair of FRP panels are provided with reinforcing fibers at an angle in a range of 0 ° to ± 10 ° with respect to an extending direction of the cavity. .   The FRP structure according to any one of claims 1 to 7, wherein the pair of FRP panels are provided with reinforcing fibers at an angle in a range of ± 80 ° to 90 ° with respect to an extending direction of the cavity. .   The FRP structure according to claim 1, wherein reinforcing fibers made of chopped fibers are randomly arranged on the pair of FRP panels.   The FRP structure according to any one of claims 8 to 11, wherein the reinforcing fiber comprises at least one of carbon fiber, glass fiber, and polyaramid fiber.   The FRP structure according to any one of claims 1 to 12, wherein the resin of the pair of FRP panels includes a flame retardant resin.   The FRP structure according to claim 1, wherein at least one partition plate extending between the pair of FRP panels is provided in the cavity.   The FRP structure according to claim 1, wherein a hole is formed in each FRP panel. An FRP structure, wherein a plurality of the units of the FRP structure according to claim 1 are connected in the lateral direction . The FRP structure according to claim 16, wherein the units are directly connected to each other . The FRP structure according to claim 16 , wherein the units are connected to each other via a connecting member. The FRP structure according to any one of claims 1 to 18, which is a roofing material . The FRP structure according to any one of claims 1 to 19, which is a wall material .

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