JP2017201090A - Seismic reinforcement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light-weight seismic reinforcement having a satisfactory strength capable of preventing degradation of appearance quality of a traditional building.SOLUTION: A seismic reinforcement 10 is a coupler 11 formed of a fiber reinforced composite material, includes: a coupler 11 which has a hollow part 11a at least one end thereof; and a rod-like fiber reinforced composite material 12 which is inserted into the hollow part 11a of the coupler 11.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a rod-shaped seismic reinforcing material.

As a seismic reinforcement for buildings such as reinforced concrete buildings and wooden houses, existing structures are reinforced with steel bracing, and joints such as beams, foundations, columns and bracing are reinforced with hardware. Or a steel plate is wound around a pillar.
In addition, traditional buildings such as temples, shrines, temples, old houses, and station buildings need to have improved earthquake resistance while maintaining the aesthetic appearance. For this reason, reinforcement using a large steel frame, which is applied to general buildings, is not preferred, and metal fittings for joints that are not so conspicuous have been studied (for example, see Patent Document 1).

JP 2013-170373 A

However, it is difficult to provide sufficient seismic resistance while maintaining the aesthetics of a traditional building with only the metal fittings at the joint. For this reason, there are places where seismic reinforcement is performed at the expense of the beauty of wrapping steel plates around columns.
On the other hand, buildings that can be seismically reinforced, such as wrapping steel plates, are still good, but some buildings cannot be reinforced. For example, because the mass of seismic reinforcement such as steel plate or steel is large, the traditional building itself cannot withstand the mass of the seismic reinforcement. Such a problem becomes a problem particularly when an earthquake-resistant reinforcing material is used for an upper layer portion of a building such as a roof or a beam portion of the building.
In addition, steel plates and steel braces, etc., have a large mass, so it is necessary to bring them into the construction site using heavy machinery and to perform construction. However, the place where traditional buildings are built is There are many places that can not be ridden, especially in high-rise buildings, such a matter is a problem, especially improvement is desired.
Therefore, an object of the present invention is to provide a seismic reinforcing material that is lightweight and strong and that can suppress deterioration in the appearance quality of a traditional building.

The present invention provides the following.
<1> A seismic reinforcing material comprising a joint made of a fiber reinforced composite material and comprising a joint having a hollow portion at least on one end and a rod-like fiber reinforced composite material inserted into and joined to the hollow portion of the joint.
<2> The earthquake-resistant reinforcing material according to <1>, wherein the density of the joint is 1.0 to 5.0 g / cm ³ .
<3> The earthquake-resistant reinforcing material according to <1> or <2>, wherein the joint has a mass of 50 to 5000 g / m.
<4> The earthquake-resistant reinforcing material according to any one of <1> to <3>, wherein the rod-like fiber-reinforced composite material has a density of 1.0 to 2.5 g / cm ³ .
<5> The seismic reinforcing material according to any one of <1> to <4>, wherein the rod-like fiber reinforced composite material has a mass of 2 to 150 g / m.
<6> The earthquake-resistant reinforcing material according to any one of <1> to <5>, wherein the rod-like fiber reinforced composite material has a tensile strength of 100 to 5000 MPa.
<7> The earthquake-resistant reinforcing material according to any one of <1> to <6>, wherein the breaking load is 3 to 300 kN.
<8> The earthquake-proof reinforcing material according to any one of <1> to <7>, wherein the entire mass is 5 kg or less.

  According to the seismic reinforcement of the present invention, the seismic reinforcement is lightweight and has excellent tensile strength such as tensile strength and breaking load, so it is built in a place where heavy machinery such as crane cars cannot enter. It is possible to perform seismic reinforcement of traditional buildings that could not withstand the mass of traditional buildings and conventional seismic reinforcements and that could not be seismically reinforced, and to suppress the deterioration of the appearance due to seismic reinforcement.

It is a perspective view which shows the edge part of the earthquake-proof reinforcement material in embodiment of this invention. It is a figure which shows the 1st modification of a rod-shaped fiber reinforced composite material. It is a figure which shows the example of binding by another restraint material. It is a figure which shows the example of binding by another restraint material. It is a figure which shows the example of binding by another restraint material. It is a figure which shows the 2nd modification of a rod-shaped fiber reinforced composite material.

  Hereinafter, embodiments of the seismic reinforcing material according to the present invention will be described with reference to the drawings. However, the present invention is not limited to the following embodiments, and may be arbitrarily changed without departing from the gist of the present invention. Can be implemented. Further, when the expression “to” is used in the present specification, it is used as an expression including numerical values before and after the expression.

(Seismic reinforcement)
FIG. 1 is a perspective view showing an end portion of a seismic reinforcement member according to an embodiment of the present invention.
As shown in FIG. 1, the seismic reinforcing material 10 in the embodiment of the present invention includes a joint 11 made of a fiber reinforced composite material and a rod-like fiber reinforced composite material 12 joined to the joint 11. The joint 11 has a hollow portion 11a on at least one side. The rod-like fiber reinforced composite material 12 is inserted into the hollow portion 11a of the joint 11 and joined.

  In addition, as for the earthquake-proof reinforcement material 10 of this embodiment, it is desirable for a breaking load to be 3-300 kN. The lower limit is preferably 5 kN or more, more preferably 10 k or more, and further preferably 30 kN or more, although it depends on the location and construction method used as the seismic reinforcement. If the breaking load is 3 kN or more, the seismic reinforcing material 10 having excellent strength can be obtained.

  On the other hand, the upper limit value is preferably 200 kN or less, and more preferably 100 kN or less. When it exceeds 300 kN, the joint 11 and the rod-like fiber reinforced composite material 12 become thick, and the seismic reinforcement 10 becomes heavy. Further, it is necessary to increase the thickness of the joint 11, increase the length, increase the strength of the joint between the joint 11 and the rod-like fiber reinforced composite material 12, and the joint between the joint 11 and another member. There is a risk of damaging the appearance quality of buildings that are seismically reinforced.

The density of the rod-like fiber reinforced composite material 12 is desirably 1.0 to 2.5 g / cm ³ . The lower limit is preferably 1.2 g / cm ³ or more, more preferably 1.4 g / cm ³ or more. If it is 1.0 g / cm ³ or more, the earthquake-proof reinforcing material 10 having excellent strength can be obtained. On the other hand, the upper limit is preferably 2.2 g / cm ³ or less, more preferably 2.0 g / cm ³ , and even more preferably 1.8 g / cm ³ or less. If it is 2.5 g / cm ³ or less, a light seismic reinforcement 10 is obtained.

  The mass of the rod-like fiber reinforced composite material 12 is desirably 2 to 150 g / m. The lower limit is preferably 5 g / m or more, more preferably 10 g / m, and still more preferably 40 g / m or more. If it is 2 g / m or more, the seismic reinforcement 10 having excellent strength can be obtained. On the other hand, the upper limit is preferably 120 g / m or less, more preferably 100 g / m or less. If it is 150 g / m or less, the light seismic reinforcement 10 is obtained.

  The rod-like fiber reinforced composite material 12 desirably has a tensile strength of 100 to 5000 MPa. About a lower limit, Preferably it is 500 Mpa or more, More preferably, it is good in it being 1000 Mpa or more. If it is 100 Mpa or more, the earthquake-proof reinforcement material 10 which has the outstanding intensity | strength will be obtained. On the other hand, the upper limit value is preferably 4000 MPa or less, and more preferably 3000 MPa or less. If it exceeds 5000 MPa, the seismic reinforcing material becomes heavy or loses flexibility, and there is a possibility that it cannot be wound up and moved.

  The joint 11 and the rod-like fiber reinforced composite material 12 can be joined using an adhesive. Examples of the adhesive include rubbers such as epoxy, melamine, silicone, phenol, natural rubber, and synthetic rubber, α-olefin, acrylic, vinyl acetate, and urethane.

  Moreover, you may provide an unevenness | corrugation in the junction part with the hollow part 11a of the joint 11, and the joint 11 of the rod-shaped fiber reinforced composite material 12, and may join. For example, a concave portion may be provided in the hollow portion 11 a of the joint 11, and a convex portion may be provided in the rod-like fiber reinforced composite material 12. Moreover, a screw may be cut in the insertion part of the hollow part 11a of the joint 11 and the hollow part 11a of the rod-like fiber reinforced composite material 12, and a female screw and a male screw may be formed and joined.

  If a metal joint and a rod-like fiber reinforced composite material are joined, the adhesive strength of the adhesive to the metal and the adhesive strength to the rod-like fiber reinforced composite material are significantly different. If unevenness is not provided by cutting a screw or the like, the strength of the joint between the metal joint and the rod-like fiber reinforced composite material may not be sufficient.

However, in this embodiment, as will be described later, since the resin is used for both the joint 11 and the rod-like fiber reinforced composite material 12, an adhesive having an excellent adhesive force is used for each resin. Thus, the seismic reinforcing material 10 having excellent strength can be easily obtained without providing the hollow portion 11a of the joint 11 with irregularities such as cutting a screw. Therefore, it is easy to balance the strength of the joint 11, the rod-like fiber reinforced composite material 12 and their joints, and the seismic reinforcing material 10 having excellent appearance quality and stable strength can be obtained.
Moreover, since the joint 11 is a fiber reinforced composite material, it is lighter than a metal, and a light seismic reinforcing material 10 can be obtained.
Moreover, you may join using the thing which has an adhesive agent and an unevenness | corrugation of course for adhesion | attachment of the coupling 11 and the rod-shaped fiber reinforced composite material 12. FIG.

  Moreover, you may have also in the other one edge part to which the rod-shaped fiber reinforced composite material 12 of the joint 11 is not joined. The joint 11 may have hollow portions 11 a at both ends, and the rod-like fiber reinforced composite material 12 may be joined to both ends of the joint 11. In addition, a rod-like fiber reinforced composite material 12 is joined to one end of the joint 11, and the other end is made of a metal material, for example, a rebar made of round steel or a round steel bar, a deformed rebar, a column or a beam. For example, a fixing jig for attaching the seismic reinforcing material 10 of the present embodiment may be joined.

In addition, when using a metal reinforcement, what has an unevenness | corrugation on the surface of a reinforcement from a viewpoint of the adhesive strength with the coupling 11 is preferable.
Further, when a metal material is joined to one side of the joint 11, the metal material is used so as to be directly connected to a column or beam using welding, a bolt, a nail, a wire, a plate, or the like. This reduces the load on the building.
In addition, the joint 11 may be a part that is hollow near one end, near both ends, and the other part is not hollow, or from one end to the other. It may be a tubular object penetrating to the end.

  What is necessary is just to set the length of the coupling 11 of this embodiment according to the intensity | strength to require, but 10 mm-1000 mm are good. Moreover, what is necessary is just to set the thickness of an outer diameter according to the intensity | strength to require, but 3 mm-500 mm are good. In addition, from the viewpoint of the appearance of the building after construction, the shorter the length of the joint 11, the smaller the thickness of the joint 11 is preferable, and the length is more preferably 50 cm or less, 30 cm or less, 20 cm or less, The thickness is more preferably 10 cm or less, 5 cm or less, and 3 cm or less. Further, the length and thickness of the hollow portion 11a in the length direction of the joint 11 may be set according to the strength required for the earthquake-resistant reinforcing material 10 and the thickness and strength of the rod-like fiber reinforced composite material 12. The length of the joint 11 of 11a in the length direction is preferably 10 mm to 500 mm, and the thickness of the hollow portion 11a is preferably 2 mm to 250 mm.

In addition, in the tension material using the bolt made from the steel material of general M12, the thing of 46 kN is used as a breaking load, but in order to obtain the breaking load of 46 kN in this embodiment, the length of the joint Is preferably 20 cm or more.
In the case where the length of the joint is less than 20 cm, when a load of 46 kN is applied, the joint may be broken due to slippage between the inner layer and the outer layer of the joint. In the case of a seismic reinforcing material capable of withstanding a 46 kN breaking load, the length of the joint is preferably 25 cm or more.
In addition, the insertion length of the rod-like fiber reinforced composite material 12 into the joint 11 is preferably 8 cm or more. More preferably, it is 10 cm or more, and more preferably 12 cm or more. When the insertion length is less than 8 cm, the rod-like fiber reinforced composite material 12 may come out of the joint 11 when a load of 46 kN is applied.
Further, when inserting a general M12 steel bolt into the other of the joint 11, the insertion length is preferably 6 cm or more, and more preferably 8 cm or more. When the insertion length is less than 6 cm, there is a possibility that the steel bolt of M12 will come off from the joint 11.
In addition, when a certain level of force is applied, the seismic reinforcing member 10 is broken so that the building is seismically isolated, and is connected to the joint 11 and the rod-like fiber reinforced composite material 12 or the joint 11. At least one of the members may be removed from the joint 11 with a certain force or more, or the strength may be such that the joint 11 is broken, or ultra low yield steel may be used as another member.

  Moreover, as for the earthquake-proof reinforcement material 10 of this embodiment, it is good that at least one of the coupling 11 and the rod-shaped fiber reinforced composite material 12 is colored. As will be described later, the joint 11 and the rod-like fiber reinforced composite material 12 are easily colored because they are composite materials of fibers and resin, and can be colored in an arbitrary color. Therefore, it is possible to further suppress the deterioration of the appearance quality by matching the color of the reinforcing part of the building that is subjected to the seismic reinforcement.

  Moreover, the total mass of the seismic reinforcing material 10 of this embodiment is good in it being 5 kg or less. Preferably it is 3 kg or less, more preferably 1 kg or less. Depending on the length, thickness and material of the rod-like fiber reinforced composite material 12, the thickness, length and material of the joint 11, and other materials to be joined, the overall mass of the seismic reinforcement member 10 will change, but heavy machinery or the like is used. Both can be transported, and 5 kg or less is preferable from the viewpoint of workability at a high place. If it is the earthquake-proof reinforcement material of this embodiment, the earthquake-proof reinforcement material of said mass or less can be obtained easily. The lower limit is not particularly limited, but is preferably 5 g or more from the viewpoint of strength.

(Fitting)
The joint 11 of the present embodiment is a member for joining the rod-like fiber reinforced composite material 12 and another member, and is made of a fiber reinforced composite material, and has a hollow hollow portion 11a in which at least one is opened. It is a columnar object.
The density of the joint 11 is preferably 1.0 to 5.0 g / cm ³ . The upper limit is preferably 4.0 g / cm ³ or less, more preferably 3.0 g / cm ³ or less, and even more preferably 2.0 g / cm ³ or less. If the density is 5.0 g / cm ³ or less, a light seismic reinforcement 10 can be obtained.
On the other hand, the lower limit is preferably 1.3 g / cm ³ or more, and more preferably 1.5 g / cm ³ or more. When the density is 1.0 g / cm ³ or more, a material having sufficient strength as the seismic reinforcing material 10 can be obtained.

  The mass is preferably 50 g / m to 5000 g / m. The upper limit is preferably 2000 g / m or less, more preferably 1000 g / m, and still more preferably 500 g / m or less. If the mass is 5000 g / m or less, a light seismic reinforcing material 10 can be obtained. On the other hand, the lower limit is preferably 100 g / m or more, more preferably 200 g / m or more, and still more preferably 300 g / m or more. When the mass is 50 g / m or more, an earthquake-resistant reinforcing material having sufficient strength can be obtained.

The joint 11 is made of a fiber-reinforced composite material, and is formed by molding, solidifying, and integrating a fiber material and a solidifying agent.
Examples of the fiber material used include carbon fiber, basalt fiber, para-aramid fiber, meta-aramid fiber, ultrahigh molecular weight polyethylene fiber, polyarylate fiber, PBO (polyparaphenylene benzoxazole) fiber, and polyphenylene sulfide (PPS). Fiber, polyimide fiber, fluorine fiber, polyvinyl alcohol (PVA fiber) and the like can be used. The fiber material used is particularly preferably carbon fiber or glass fiber from the viewpoint of flame retardancy, strength, and light resistance. Glass fiber is preferable from the viewpoint of flame retardancy. Further, from the viewpoint of improving the breaking strength of the obtained seismic reinforcing material 10, the same fiber material used for the rod-like fiber reinforced composite material 12 may be used.

Moreover, as a solidifying agent used for the joint 11, both a thermoplastic resin and a thermosetting resin can be used. Further, a solidifying agent having high affinity with the fiber material is preferable. In particular, since it is possible to give variability by heating, from the viewpoint of excellent adhesion when the joint 11 and the rod-like fiber reinforced composite material 12 are joined using an adhesive, a solidifying agent is used. A thermoplastic resin is preferably used.
Specific examples of the solidifying agent include polyetheretherketone (PEEK), polypropylene, polyethylene, polystyrene, polyamide (nylon 6, nylon 66, nylon 12, nylon 42, etc.), ABS resin, acrylic resin, vinyl chloride resin, and chloride. Vinylidene resin, polyphenylene oxide, polybutylene terephthalate, polyethylene terephthalate, unsaturated polyester, polysulfone, polyethersulfone, polyetherimide, polyarylate, epoxy resin, urethane resin, polyimide resin, phenol resin, silicone resin, polycarbonate resin, resorcinol Examples of the resin include, but are not limited to, resin. From the viewpoint of adhesiveness, a thermoplastic epoxy resin is preferable. Further, the same resin as that used in the rod-like fiber reinforced composite material 12 is preferable from the viewpoint of adhesiveness.

  Further, in addition to the above materials, a curing agent, a catalyst, a crosslinking agent, a colorant such as a pigment, a catalyst, an ultraviolet absorber, an antioxidant, a light resistance improver, and the like may be included.

Further, the shape of the joint 11 of the present embodiment is preferably a columnar shape, and the cross-sectional shape in the length direction is not particularly limited, such as a polygon such as a circle, an ellipse, a triangle, a quadrangle, a pentagon, and a hexagon. From the viewpoint of strength, a circular shape is preferable.
As the joint 11, specifically, Plaalloy (registered trademark) provided by AGC Matex Co., Ltd. can be used.

Further, the joint 11 of the present embodiment uses a mold in which the shape of the joint 11 is formed with a recess, and injects a resin and a fiber material cut into an arbitrary length into the mold, and heats, heats and heats the joint 11. The method of manufacturing by performing a pressure, cooling, etc. is mentioned. Further, a plurality of long fiber fibers are arranged in parallel in a hollow shape, and the fiber material is immersed in the resin solution while being moved in the fiber axis direction, and passed through a mold for forming a hollow portion. The manufacturing method of cut | disconnecting to arbitrary lengths after manufacturing the hollow tubular part of and obtaining a coupling is mentioned. According to the method, the fiber axis direction of the fiber material is arranged in the same direction as the length direction of the joint 11. From the viewpoint of improving the tensile strength such as the breaking strength of the seismic reinforcement 10 obtained, it is preferable that the fiber axis direction of the fiber material is arranged in the same direction as the length direction of the joint 11.
In addition, the manufacturing method of the coupling 11 of this embodiment is not limited to said manufacturing method.

(Bar-like fiber reinforced composite)
The rod-like fiber reinforced composite material 12 of this embodiment is obtained by integrating a fiber bundle formed by bundling fiber materials with a solidifying agent.
Examples of the fiber material used include carbon fiber, basalt fiber, para-aramid fiber, meta-aramid fiber, ultrahigh molecular weight polyethylene fiber, polyarylate fiber, PBO (polyparaphenylene benzoxazole) fiber, and polyphenylene sulfide (PPS). Fiber, polyimide fiber, fluorine fiber, polyvinyl alcohol (PVA fiber) and the like can be used. The fiber material used is particularly preferably carbon fiber or glass fiber from the viewpoint of flame retardancy, strength, and light resistance. Glass fiber is preferable from the viewpoint of flame retardancy. From the viewpoint of the tensile strength of the seismic reinforcement, the same fiber material as that used for the joint may be used.

  Hereinafter, carbon fibers, particularly those using carbon fibers as the core material of the rod-like fiber reinforced composite material 12 will be described in detail as an example. Hereinafter, the rod-like fiber reinforced composite material 12 using carbon fiber as a core material is also referred to as a rod-like carbon fiber composite material 12. In addition, the thing using fiber materials other than carbon fiber is not excluded.

A carbon fiber bundle obtained by bundling a plurality of carbon fibers (usually several thousand to several hundred thousand or millions) is used. The carbon fiber bundle may have an arbitrary cross section such as a circular shape or a flat shape when cut perpendicular to the length direction of the carbon fiber bundle, but a circular shape is preferred. In the rod-like carbon fiber composite material 12 of this embodiment, it is preferable that the bundle of carbon fibers is integrated by a solidifying agent in a state where a predetermined number of twists are applied. The number of twists of the carbon fiber bundle is the resistance to bending stress of the obtained rod-like fiber reinforced composite material 12, the anti-breaking property of the carbon fiber bundle, the strength against twist of the carbon fiber bundle (the carbon fiber yarn is not cut by twisting) and will be described later. In the step of obtaining the rod-like fiber reinforced composite material 12-1 to be performed, the carbon fiber bundle jumps out from between the restraining materials when the solidifying agent is applied and the carbon fiber bundle and the restraining material are integrated (opened) ) Is determined in consideration of the absence of
The twist number of the carbon fiber bundle is 0 to 100 times / m, preferably 2 to 50 times / m, more preferably 5 to 40 times / m, and further preferably 10 to 30 times / m.

The rod-like fiber reinforced composite material 12 preferably has a diameter of 0.5 to 20 mm, and more preferably has a diameter of 1 to 5 mm. In addition, the diameter of the rod-like fiber reinforced composite material 12 of the present embodiment is a diameter of a cross section cut perpendicularly to the length direction of the rod-like fiber reinforced composite material 12 integrated with a solidifying agent, so that the target diameter is obtained. The diameter of the carbon fiber bundle and the application amount of the solidifying agent are selected. When the cross section of the rod-like fiber reinforced composite material 12 cut perpendicularly to the length direction is not a circle, the major axis of the cross section is called a diameter.
The cross section of the rod-like fiber reinforced composite material 12 cut perpendicularly to the length direction may be arbitrary, such as a circular shape or a flat shape, but a circular shape is preferable. Even when the strength of the obtained rod-like fiber reinforced composite material 12 is stabilized and the strand structure or the multi-strand structure of the rod-like fiber reinforced composite material 12-1 or the rod-like fiber reinforced composite material 12-2 described later is used. A stable strand structure can be obtained.
Further, when the diameter of the rod-like fiber reinforced composite material 12 is 0.5 to 20 mm in diameter (more preferably 1 to 5 mm), the rod-like fiber reinforced composite material 12 and a rod-like fiber reinforced composite material 12-1, which will be described later, The fiber-reinforced composite material 12-2 (strand structure or multi-strand structure) can be easily wound around the drum, and flexibility such as following an arbitrary shape can be improved.

As the carbon fiber of this embodiment, any of polyacrylonitrile (PAN) -based and pitch-based carbon fibers can be used. Among these, PAN-based carbon fiber yarn is preferable from the viewpoint of the balance between strength and elastic modulus of the obtained rod-like fiber reinforced composite material 12.
In addition, carbon fiber bundles obtained by bundling the carbon fibers are 3000 (3K), 6000 (6K), 12000 (12K), 24000 (24K), 40000 carbon fibers supplied from a carbon fiber manufacturer ( 40K), 60000 (60K), or the like, and carbon fiber bundles bundled in one or more (two or more) depending on the required strength can be used. The number of carbon fiber bundles in the case of bundling a plurality of carbon fiber bundles obtained by bundling carbon fibers is not particularly limited and is appropriately determined depending on the intended use, but is usually 100 or less.

As the solidifying agent of this embodiment, either a thermoplastic resin or a thermosetting resin can be used. Further, a solidifying agent having high affinity with carbon fiber is preferable. In particular, since it is possible to give variability by heating, from the viewpoint of excellent adhesion when the joint 11 and the rod-like fiber reinforced composite material 12 are joined using an adhesive, A thermoplastic resin is preferably used.
Preferred examples include polyetheretherketone (PEEK), polypropylene, polyethylene, polystyrene, polyamide (nylon 6, nylon 66, nylon 12, nylon 42, etc.), ABS resin, acrylic resin, vinyl chloride resin, vinylidene chloride resin. , Polyphenylene oxide, polybutylene terephthalate, polyethylene terephthalate, polysulfone, polyethersulfone, polyetherimide, polyarylate, epoxy resin, urethane resin, polyimide resin, phenol resin, silicone resin, polycarbonate resin, resorcinol resin, etc. Not limited to this.

Among these, from the viewpoint of durability against acids and alkalis, polyether ether ketone (PEEK), acrylic resin, vinyl chloride resin, vinylidene chloride resin, polyethylene resin, epoxy resin, urethane resin, polycarbonate resin, resorcinol resin are preferable. In particular, it is excellent in impact resistance, and an epoxy resin is suitable. Moreover, if it is a thermoplastic epoxy resin, it can melt | dissolve in a ketone solvent and can separate a material and can recycle. Moreover, a polyimide resin and a silicone resin are preferable from a heat resistant viewpoint.
Further, from the viewpoint of excellent adhesion when the joint 11 and the rod-like fiber reinforced composite material 12 are joined using an adhesive, a thermoplastic epoxy resin is preferably used as a solidifying agent.

In addition, among thermoplastic epoxy resins, a polymerization type thermoplastic epoxy resin that polymerizes after imparting to a carbon fiber bundle is preferable, and a polymerization type thermoplastic epoxy resin that polymerizes linearly is particularly preferable.
The carbon fiber bundle used in the core material of the rod-shaped carbon fiber composite material 12 is twisted, or the carbon fiber bundle is covered with a restraining material like the rod-shaped carbon fiber composite material 12-1 described later. However, it is difficult to impregnate the resin into the carbon fiber bundle.
On the other hand, the polymerization-type thermoplastic epoxy resin can be easily adjusted in viscosity because the thermoplastic epoxy resin before polymerization can be diluted with an organic solvent.
Therefore, by using a low-viscosity resin solution diluted with an organic solvent, up to the inside of the carbon fiber bundle that is twisted (further, it is a rod-like carbon fiber composite material 12-1 covered with a restraint material. Can also be impregnated with a thermoplastic epoxy resin prior to polymerization. After impregnating the thermoplastic epoxy resin before polymerization into the inside of the carbon fiber bundle, the carbon fiber bundle and the restraining material were integrated with the thermoplastic epoxy resin by polymerizing the thermoplastic epoxy resin of the polymerization type, A rod-like carbon fiber composite material 12 having excellent strength is obtained.

  In addition, a general thermoplastic resin used to impart fluidity by heating and melting is difficult to adjust the viscosity, and the crystal arrangement is changed by heating or melting because it is generally a crystalline resin, Although properties such as strength of the original resin may be altered, the polymerization type thermoplastic epoxy resin is amorphous before and after polymerization, so it can be melted and deformed by heating. The risk of alteration is small.

  The method of applying the above resin (solidifying agent) to the carbon fiber bundle may be a spray coating method or a method of coating the carbon fiber with a brush, but from the viewpoint of productivity, a dip-nip method or a resin ( After dipping into the solidifying agent solution, a method of removing excess resin through a die and adjusting the cross-sectional shape of the cross section perpendicular to the length direction of the carbon fiber bundle is preferable.

  Further, the rod-like fiber reinforced composite material 12 may be provided with a separate resin layer so as to cover the entire outer periphery of the carbon fiber bundle integrated with the solidifying agent. From the viewpoint of improving incombustibility, it is preferable to provide a resin layer using a polyimide resin, a silicone resin, or a vinyl chloride resin. Further, from the viewpoint of design properties, a resin layer containing a colorant such as a pigment for coloring may be provided. These resin layers can be used with either a thermoplastic resin or a thermosetting resin. However, when a thermoplastic resin is used as a solidifying agent, the resin used for the separate layer is also a thermoplastic resin. preferable.

(Variation 1 of rod-like fiber reinforced composite material)
The rod-shaped fiber reinforced composite material of other embodiment of this invention is demonstrated. FIG. 2 is a view showing a first modification of the rod-like fiber reinforced composite material.
In the rod-like fiber reinforced composite material 12-1 shown in FIG. 2, a fiber bundle 2 formed by bundling fiber materials is wound around a restraint material 3a, and the fiber bundle 2 and the restraint material 3a are solidified together. It is integrated with an agent (not shown).
In addition, by making the fiber bundle 2 have a structure in which the binding material 3a is wound around the fiber bundle 2, the contact area between the rod-like fiber reinforced composite material 12-1 and the adhesive and the structural resistance are increased. 11 and the rod-like fiber reinforced composite material 12-1 are improved, which is preferable from the viewpoint of the tensile strength and breaking load of the obtained seismic reinforcement.
Since the basic configuration other than the restraining material 3a is the same as that of the rod-like fiber reinforced composite material 12, the description thereof will be omitted as appropriate.
Further, the rod-like fiber reinforced composite material 12-1 will be described in detail by using, as an example, a carbon fiber as a fiber material, in particular, a material using carbon fiber as a core material, like the rod-like fiber reinforced composite material 12. Hereinafter, the fiber bundle 2 formed by bundling carbon fibers is also referred to as a carbon fiber bundle 2. In addition, the thing using fiber materials other than carbon fiber is not excluded.
The rod-like fiber reinforced composite material 12-1 is also referred to as a rod-like carbon fiber composite material 12-1. In addition, the thing using fiber materials other than carbon fiber is not excluded.

  The restraining material 3a is capable of binding the carbon fiber bundle 2 from the peripheral surface so that the carbon fibers are not separated and stabilizing the shape of the rod-like fiber reinforced composite material 12-1. In the present embodiment, the rod-like fiber reinforced composite material 12-1 restrains the carbon fiber bundle 2 with the restraining material 3a, and gives the solidifying agent thereto so that the carbon fiber bundle 2 and the restraining material 3a become the solidifying agent. It is integrated by. Similarly to the rod-like fiber reinforced composite material 12, the carbon fiber bundle 2 is preferably twisted.

  In the rod-like fiber reinforced composite material 12-1 of the present embodiment, the braided restraint material 3 a is formed by winding a fiber serving as the restraint material 3 a around the outer circumference of the carbon fiber bundle and forming a tubular braid (round punching). Forming. By making the restraining material 3a into a braid shape, the carbon fiber bundle 2 can be bound, and the shape of the obtained rod-like fiber reinforced composite material 12-1 can be further stabilized. It functions as a protective layer for protecting the carbon fibers constituting the bundle 2. In addition, since traditional Japanese braid technology is used, it is possible to suppress deterioration in appearance quality even when used in traditional buildings.

Therefore, when the rod-like fiber reinforced composite material 12-1 having such a configuration is used as a seismic reinforcing material such as a tensile material, it exhibits stable strength, good appearance quality, and is in contact with sharp objects such as gravel. Can also prevent disconnection.
In addition, after dipping the carbon fiber bundle 2 restrained by the restraining material 3a into a resin (solidifying agent) solution, tension is applied in the length direction of the carbon fiber bundle 2 when handling excess resin with a die. If the restraining material 3a is a braid structure, the eyes are not opened like a knitted fabric, but the diameter of the braid is narrowed with the eyes closed. Therefore, it is possible to improve the adhesion between the restraining material 3a and the carbon fiber bundle 2 while suppressing the exposure of the inner carbon fiber bundle 2, which is preferable from the viewpoint of the strength of the obtained seismic reinforcing material.

In addition, the restraint material 3a should just be bound so that the carbon fiber which comprises the carbon fiber bundle 2 may not become disjoint, and arrangement | positioning of the restraint material 3a is not limited to braid shape. Further, it is not necessary to completely cover the surface of the carbon fiber bundle 2 with the restraining material 3a, and a part of the surface of the carbon fiber bundle 2 may not be covered.
As an example of binding with another restraining material, one restraining material is spirally wound to bind a carbon fiber bundle (not shown), or as shown in FIG. The carbon fiber bundle 2 is bound by a braided string-shaped restraining material 3b obtained by winding a fiber to be the restraining material 3b and knitting a cylindrical round knitting with a coarse mesh, or as shown in FIG. The form which binds the carbon fiber bundle 2 by the restraint material 3c arrange | positioned at the space | interval may be sufficient.
On the other hand, from the viewpoint of protecting the carbon fiber bundle 2, stabilizing the strength due to the stability of the shape of the rod-like fiber reinforced composite material 12-1, and suppressing the deterioration of the appearance quality, as shown in FIG. It is preferable to form a braid to cover the entire surface of the carbon fiber bundle 2.

  As the restraining materials 3a to 3d, flexible materials are preferable, and synthetic fibers such as polyamide (nylon, etc.), vinylon, polyacryl, polypropylene, vinyl chloride, aramid, cellulose, polyamide, polyester, polyacetal, and regenerated fibers such as rayon. Semi-synthetic fibers such as acetate, natural fibers such as silk, wool, hemp and cotton can be used. Moreover, the fiber excellent in heat stability is preferable, a glass fiber and a basalt fiber are preferable, and especially a glass fiber is preferable. By using a fiber having excellent thermal stability such as glass fiber, when heated, it is excellent in nonflammability and suppresses the occurrence of deviation between the carbon fiber bundle 2 and the restraining materials 3a to 3d and is stable. The strength against tension and nonflammability can be expressed.

  In the fiber reinforced composite material 12-1, in order to bind the carbon fiber bundle 2 more firmly, the carbon fiber bundle 2 bound by the restraining materials 3a to 3d is particularly impregnated with a solidifying agent, and the restraining materials 3a to 3d. At the same time, the carbon fiber bundle 2 is preferably cured. By doing so, the carbon fiber bundle 2 and the restraining materials 3a to 3d can be firmly integrated.

  The thickness of the rod-like fiber reinforced composite material 12-1 is 1 to 25 mm in diameter, more preferably 1 to 10 mm, and even more preferably 1 to 5 mm. The fiber-reinforced composite material 12-2 (strand structure or multi-strand structure) can be easily wound around the drum, and flexibility such as following an arbitrary shape can be improved. In addition, the diameter of the rod-shaped fiber reinforced composite material 12-1 of this embodiment is perpendicular to the length direction of the rod-shaped fiber reinforced composite material 12-1 integrated with the carbon fiber bundle 2 and the restraining materials 3a to 3d by a solidifying agent. The diameter of the carbon fiber bundle 2 and the application amount of the solidifying agent are selected so as to be the target diameter. When the cross section when cut perpendicularly to the length direction of the rod-like fiber reinforced composite material 12-1 is not a circle, the major axis of the cross section is called a diameter.

  In addition, the rod-like fiber reinforced composite material 12-1 has a separate layer (a cylindrical body or a resin layer made of a fiber material, etc.) so as to cover the entire outer periphery of the carbon fiber bundle 2 to which the restraining materials 3a to 3d and the solidifying agent are applied. ) May be provided. From the viewpoint of improving incombustibility, a resin layer using a polyimide resin, a silicone resin, or a vinyl chloride resin may be provided. Further, from the viewpoint of designability, a resin layer containing a colorant such as a pigment for coloring may be separately provided. These resin layers can be used with either a thermoplastic resin or a thermosetting resin. However, when a thermoplastic resin is used as a solidifying agent, the resin used for the separate layer is also a thermoplastic resin. preferable.

(Variation 2 of rod-like fiber reinforced composite material)
The rod-like fiber reinforced composite material 12-2 according to another embodiment of the present invention will be described. FIG. 6 is a view showing a second modification of the rod-like fiber reinforced composite material.
The rod-like fiber reinforced composite material 12-2 uses one or both of the rod-like fiber reinforced composite material 12 and the rod-like fiber reinforced composite material 12-1 as a core wire, and a plurality of these are aligned or twisted together. It is the strand structure formed in this way.
For example, as shown in FIG. 6, the rod-like fiber reinforced composite material 12-2 includes seven rod-like fiber reinforced composite materials 12-1, and one rod-like fiber reinforced composite material 12 arranged at the center. -1 is a strand structure having a structure surrounded by the other six rod-shaped fiber reinforced composite materials 12-1, so that the rod-shaped fiber reinforced composite material 12- is joined at the joint of the joint 11 and the rod-shaped fiber reinforced composite material 12-2. 2 and contact resistance between the adhesive and the structural resistance increase, the adhesive strength between the joint and the rod-like fiber reinforced composite material 12-2 is improved, and the tensile strength and stability of the resulting seismic reinforcing material are improved. More preferred.

  As the core wire constituting the strand structure, the rod-like fiber reinforced composite material 12 and the rod-like fiber reinforced composite material 12-1 are exemplified, but the present invention is not limited thereto. Either one is acceptable. Moreover, in the core wire in this embodiment, although the core wire which comprises a core wire is the same core wire, as long as the core wire which satisfy | fills the requirements of the core wire of this invention, you may use a different core wire in combination.

  In the rod-like fiber reinforced composite material 12-2 according to the present embodiment, the resin has a strand structure in which the core wire serving as the core and the other six core wires surrounding the core wire serving as the core are twisted together. Even if the seven core wires are not integrated by using, it is possible to prevent variation and integrate. The rod-like fiber reinforced composite material 12-2 can maintain an excellent tensile strength even when the drum-like fiber reinforced composite material 12-2 is used after being subjected to a bending stress and then stretched or used in a location where the bending stress is applied.

Also, as the direction to form the twist,
Carbon fiber bundle × strand structure = S direction × Z direction, S direction × S direction, Z direction × Z direction, Z direction × S direction are all possible.

  The number of twists of the strand structure is selected from 1.1 to 50 times / m depending on the purpose. If the number of twists is too small, it will be easy to break apart in units of core material. On the other hand, if the number of twists is too large, the tensile strength may decrease. When the number of core wires is 7 to 37, 1.5 to 20 times / m is preferable. More preferably, it is 2 to 10 times / m.

Further, the number of core wires constituting the strand structure is seven, but is not limited thereto, and is appropriately determined in consideration of target performance (particularly breaking load) and application, and is not particularly limited. However, it is usually 2-50. The number is preferably 7 to 37.
For example, in the case of the rod-like carbon fiber composite material 12 or the rod-like carbon fiber composite material 12-1 using a bundle of 24,000 carbon fibers (24k) as a carbon fiber bundle, the core wire constituting the strand structure When the number is about 2 to 50, it is suitable for uses such as brace materials.

  In addition, the rod-shaped fiber reinforced composite material 12-2 of the present embodiment is a rod-shaped carbon fiber composite material that becomes a core so as to surround one rod-shaped carbon fiber composite material 12 or the rod-shaped carbon fiber composite material 12-1 used as a core wire. 12 or the rod-like carbon fiber composite material 12-1 and other core wires are twisted together, but the core wire as a core is not provided as the structure of the strand structure, and the required number (for example, 2 to 50) of core wires May be bundled and the entire bundled core wire may be twisted.

When the diameter of the rod-like fiber reinforced composite material 12-2 is 2 to 100 mm, more preferably 4 to 50 mm, and even more preferably 6 to 20 mm, the rod-like fiber reinforced composite material 12-2 can be easily wound on a drum. Moreover, flexibility such as following an arbitrary shape can be enhanced.
The rod-like carbon fiber composite material 12-2 may be a multi-strand structure obtained by further combining the strand structures.
Further, the rod-like fiber reinforced composite material 12-2 may be provided with a separate layer (such as a cylindrical body or a resin layer made of a fiber material) so as to cover the entire outer surface of the strand structure or multi-strand structure. .
In the strand structure and the multi-strand structure, dust or the like easily adheres between the twisted core wires, but adhesion of these dusts can be suppressed.
Further, from the viewpoint of improving nonflammability, it is preferable to provide a resin layer using a polyimide resin, a silicone resin, or a vinyl chloride resin as a separate layer so as to cover the entire surface.
From the viewpoint of designability, a resin layer containing a colorant such as a pigment for coloring may be separately provided as a separate layer so as to cover the entire surface.
These resin layers can be used with either a thermoplastic resin or a thermosetting resin. However, when a thermoplastic resin is used as a solidifying agent, the resin used for the separate layer is also a thermoplastic resin. preferable.

  The rod-like fiber reinforced composite material 12 of the present embodiment having the above configuration is lightweight and has excellent strength, so that it is built in a place where a heavy machine such as a crane car cannot enter or a conventional seismic reinforcement material. It is possible to perform seismic reinforcement of traditional buildings that could not withstand the mass of the building and could not be seismically reinforced, and to suppress the deterioration of the appearance of traditional buildings because of the use of thin seismic reinforcement.

  As mentioned above, although embodiment of this invention was described, these are illustrations of this invention and various structures other than the above can also be employ | adopted within the scope of the technical idea of this invention.

EXAMPLES Hereinafter, although an Example demonstrates this invention further in detail, this invention is not limited to a following example, unless the summary is changed.
Various data in this example were measured by the following method.

<Diameter>
The diameters (outer diameter and inner diameter) of the rod-like fiber reinforced composite material and the joint were measured with calipers.
<Mass>
The rod-like fiber reinforced composite material and the joint were cut into 10 cm, the mass was measured using an electronic balance, the value was multiplied by 10, and the mass per 1 m was determined. Moreover, the mass of the whole earthquake-proof reinforcement material obtained in the Example was also measured using the balance.
<Density>
Measurement was performed according to JIS K7112: 1999 A method (underwater substitution method).

<Tensile strength and breaking load>
Tensile strength and breaking load were measured under the condition of 2 mm / min using a 5980 floor type high capacity universal testing machine model 5985 supplied from Instron Japan Company Limited. Tensile strength (MPa) is obtained by dividing the load (kN) when the sample broke into the breaking load, and dividing the breaking load by the cross-sectional area (effective cross-sectional area) cut perpendicular to the length direction of the rod-like fiber reinforced composite material. It was. Since the seismic reinforcements differed in thickness depending on the location and the cross-sectional area differed depending on the location, only the breaking load was measured.
In addition, in order to measure the breaking load of the seismic reinforcement material, the portion of the rod-like fiber reinforced composite material connected to the joint was cut to a length of 22 cm, and the threaded steel pipe (length 20 cm) And an end portion not connected to the joint of the rod-like fiber reinforced composite material was inserted into an inner diameter of 18 mm and an outer diameter of 27 mm, and joined to a steel pipe using a urethane-based adhesive. The length of the rod-like fiber reinforced composite material joined in the steel pipe was 20 cm.
The steel pipe and the bolt portion of the seismic reinforcing material described in Example 1 were gripped by the grip portion of the testing machine, and the tensile strength and breaking load were determined.

In addition, in order to measure the tensile strength and breaking load of a rod-like fiber reinforced composite material, a steel pipe (length 20 cm, inner diameter 23 mm, outer diameter) cut with a urethane adhesive at both ends of the rod-like fiber reinforced composite material 31 mm). The length bonded to the steel pipe of the rod-like fiber reinforced composite material was 20 cm at each end.
The steel pipe was grasped at the grasping portion of the testing machine, and the tensile strength and breaking load of the rod-like fiber reinforced composite material were determined.

Example 1
Three bundles of 24K carbon fiber bundles (PAN-based carbon fiber, manufactured by Toray Industries, Inc., T700SC), one of which is twisted 10 times / m in the S direction, are used as carbon fiber bundles, and glass fiber as a restraining material. , And the entire surface around the carbon fiber bundle was constrained with braided glass fibers by using a string making machine (24 hammering machine) with 8 stone punches.

next,
Polymerization type thermoplastic epoxy resin (DENATITE XNR6850V, solid content 85% by mass, manufactured by Nagase ChemteX Corporation), 100 parts by mass,
Curing agent (DENATEITE XNH6850V, solid content 30% by mass, manufactured by Nagase ChemteX Corporation) 6.5 parts by mass,
Dipping into a solution (viscosity 80 mPa · s) consisting of 10 parts by mass of methyl ethyl ketone (MEK), passing through a die to remove excess solution, and the cross-sectional shape when cut perpendicular to the length direction of the carbon fiber bundle is The shape was adjusted to be circular, and a solidifying agent was applied to the restrained carbon fiber bundle. Thereafter, heat treatment (150 ° C., 20 minutes) is performed to polymerize the polymerization type thermoplastic epoxy resin, and the carbon fiber bundle, the binding material, and the thermoplastic epoxy resin (solidifying agent) are integrated to form a rod-like fiber. A reinforced composite material was obtained.

The obtained rod-like carbon fiber composite material of Example 1 had a circular cross section and a diameter of 3 mm.
When the rod-like carbon fiber composite material was wound 3000 m on a drum having a diameter of 100 cm at room temperature, it could be wound smoothly without breaking. The obtained rod-like carbon fiber composite material was used as a core wire.

Next, using the obtained core wires, twisting together while heating at 120 ° C. so as to cover one core wire at the center and six core wires around it, a strand structure is formed, and a rod-like fiber reinforced composite material Got.
The obtained rod-like fiber reinforced composite material of Example 1 had a diameter of 9 mm, a density of 1.6 g / m ³ , and a mass of 80 g / m. The breaking load was 90 kN, and the tensile strength was 1800 MPa (effective sectional area 50 mm ² ).

Next, as a joint, the glass fiber was arranged so that the fiber axis direction was the same as the length direction of the joint, and so as to be a hollow tube, and a tubular product combined with an unsaturated polyester resin was obtained. . The tubular product had a hollow portion penetrating from one end to the other end. The outer diameter of the joint is 27 mm, the inner diameter is 21 mm, the length is 26 cm, the density is 1.8 g / m ³ , and the mass is 460 g / m.

Next, a rod-like fiber reinforced composite material cut to a length of 8 m from one end is inserted into the hollow portion of the joint, and a screw M12 having a length of 20 cm from the other end (outer diameter 12 mm, mass). 700 g / m) of bolts (steel materials) were inserted, and these were joined using a urethane-based adhesive to obtain an earthquake-resistant reinforcing material.
The portion inserted into the joint of the rod-like fiber reinforced composite material and joined with an adhesive was 15 cm. Also. The portion inserted into the bolt joint and joined with an adhesive was 11 cm.

When the total mass of the obtained seismic reinforcement was measured, it was very light as 1.0 kg with a seismic reinforcement of about 8 m. Even if 20 seismic reinforcements are transported together, it is 20 kg.
The breaking load was 47 kN (the bolt part was broken).
Moreover, in the earthquake-proof reinforcement material 8m which consists only of rod-shaped steel materials (steel bolts used in Example 1) having the same strength as the current breaking load, the total mass thereof is 5.6 kg or more. If 20 seismic reinforcements are transported together, the weight becomes 112 kg, and cannot be transported without heavy machinery.

  Therefore, since the seismic reinforcement of the present invention is lightweight and excellent in strength, it is possible to easily carry and install many seismic reinforcements on the construction site without using heavy machinery such as cranes. It can be used for various traditional buildings. In addition, the seismic reinforcement is thin and can suppress changes in the image of traditional buildings, and can also prevent deterioration in design.

  The seismic reinforcement of the present invention is useful as a seismic reinforcement for applying seismic reinforcement to buildings such as reinforced concrete buildings and wooden houses. In particular, the seismic reinforcing material of the present invention is suitable as a material capable of imparting sufficient seismic resistance while maintaining the beauty of a traditional building.

2 Fiber bundle (carbon fiber bundle)
3a to 3d Restraint material 10 Seismic reinforcement 11 Joint 11a Hollow portion 12, 12-1, 12-2 Rod-like fiber reinforced composite (rod-like carbon fiber composite)

In addition, as for the earthquake-proof reinforcement material 10 of this embodiment, it is desirable for a breaking load to be 3-300 kN. Depending on the location and construction methods used as seismic reinforcement, it is preferable that the lower limit value is more than 5 kN, more preferably at least 10k N, further preferably at least 30 kN. If the breaking load is 3 kN or more, the seismic reinforcing material 10 having excellent strength can be obtained.

Claims (8)

It is a joint made of a fiber reinforced composite material, and a joint having a hollow part at least at one end,
A seismic reinforcement comprising a rod-like fiber reinforced composite material inserted into and joined to the hollow portion of the joint. The seismic reinforcing material according to claim 1, wherein the joint has a density of 1.0 to 5.0 g / cm ³ .   The earthquake-proof reinforcing material according to claim 1 or 2 whose mass of said joint is 50-5000 g / m. The seismic reinforcing material according to any one of claims 1 to 3, wherein the rod-like fiber reinforced composite material has a density of 1.0 to 2.5 g / cm ³ .   The seismic reinforcement material according to any one of claims 1 to 4, wherein a mass of the rod-like fiber reinforced composite material is 2 to 150 g / m.   The earthquake-resistant reinforcing material according to any one of claims 1 to 5, wherein the rod-like fiber reinforced composite material has a tensile strength of 100 to 5000 MPa.   The earthquake-resistant reinforcing material according to any one of claims 1 to 6, wherein the breaking load is 3 to 300 kN.   The seismic reinforcing material according to any one of claims 1 to 7, wherein the total mass is 5 kg or less.

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