JPH11222784A - Fiber reinforced composite material cable and method of manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fiber-reinforced composite material cable exhibiting a high breaking load, having good adhesion to mortar and concrete, and having flexibility enabling easy reel winding and the like. Method. SOLUTION: A composite material wire 12 having at least one composite material wire 12 having a convex portion 30 formed on the peripheral surface is twisted and arranged at a position where the composite material wire material having the convex portion is exposed on the surface. Each composite material wire is twisted but not adhered to each other, and even if the breaking load level is increased by increasing the number of wires, the composite material wires slide, so that the fiber reinforced composite material cable is high. Exhibits flexibility.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fiber reinforced composite material cable, and more particularly to a cable used as a reinforcing material such as mortar and concrete.

[0002]

2. Description of the Related Art A fiber reinforced plastic (FRP) in which a reinforcing fiber is impregnated with a resin is widely used as a material which exhibits high strength while being lightweight. Among them, a fiber-reinforced composite material cable (FRP cable) formed in a linear shape is embedded in mortar or concrete (hereinafter, abbreviated as concrete unless otherwise specified) as a reinforcing cable serving as a tendon or a reinforcing material. Since it can greatly improve the strength of concrete, and is rich in corrosion resistance and non-magnetic, it is used for various building materials. The FRP cable used as such a reinforcing material embedded in concrete needs to have a high breaking load and a high adhesiveness to concrete. Therefore, various types of FRP cables having irregularities formed on the surface have been developed. For example, Japanese Unexamined Patent Publication (Kokai) No. 61-274036 discloses a structural rod in which the mechanical bonding with concrete is enhanced by forming an embossment on the surface of a fiber. No. 1127 discloses a concrete reinforcing material in which a surface area increasing material is wound on a stranded wire strand to form irregularities.

[0003]

Since the FRP cable is long before use, it is wound on a reel or coil during storage or transportation. Therefore, in order to easily make the reel winding or the like possible, it is desirable to have flexibility. However, in the FRP cable according to the above-described technology, as the breaking load is increased, the FRP cable becomes stiffer and less flexible, and it is difficult or difficult to wind the reel. The diameter of the body must be increased to 2.5 m or more, and there is a problem that storage and transportation are hindered due to an increase in the size of the reel. In addition, when taken out of the reel and used, the workability is poor due to the rigidity. Japanese Patent Application Laid-Open No. 4-214487 discloses a composite twisted tensile strength member formed by twisting a plurality of composite strands in which a coated fiber is densely wound at an angle close to a right angle in the axial direction. This technology forms fine irregularities with a densely wound coated fiber to increase the adhesion to concrete, but when the thermosetting resin of the matrix resin is cured, the resin exudes between the composite strands. In addition, the composite strands easily adhere to each other, become rigid and difficult to wind on a reel. As a solution to this problem, Japanese Patent Application Laid-Open No. 6-17389 discloses a technique in which the bonding between the constituent wires is mechanically broken, and the reel is made flexible so that it can be wound. However, this technique requires a complicated process of mechanically breaking the bond between the constituent wires, and is not practical. Also, Japanese Unexamined Patent Application Publication No.
The inventions described in Japanese Patent No. 487 and JP-A-6-17389 improve the adhesion to concrete by densely winding the coating fiber around the reinforcing fiber bundle. Adhesion to concrete is not enough for the winding amount.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a high breaking load, a good adhesion to mortar and concrete, and a flexibility that can be easily wound on a reel. An object of the present invention is to provide a fiber-reinforced composite material cable having the same and a method for manufacturing the same.

[0005]

The fiber reinforced composite material cable of the present invention has at least one composite material wire having a convex portion formed on its peripheral surface, and is twisted and formed with the convex portion. The composite material rod is disposed at a position exposed on the surface. It is desirable that the convex portion is formed in a spiral shape with an interval on the peripheral surface of the composite material wire, or a plurality of the convex portions are formed independently. The fiber reinforced composite material cable in which the convex portions are formed in a spiral shape is formed by winding the fibers for the convex portions in a spiral shape with an interval around a composite material wire in which a matrix resin layer is formed around the reinforcing fibers. It is desirable that the layer is cured, and a plurality of obtained composite material wires are bundled and twisted to produce. The fiber-reinforced composite material cable in which a plurality of protrusions are independently formed forms a matrix resin layer made of a thermosetting resin having thixotropic properties on the surface of the reinforcing fiber, and each of the matrix resin layers is independent of the matrix resin layer. It is desirable that the matrix resin layer be heated and hardened after the projections are formed, and that a plurality of obtained composite material wires be bundled and twisted to produce. In this case, it is desirable to form the independent convex portions by partially cutting the matrix resin layer or partially winding the fastening yarn around the matrix resin layer.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The fiber-reinforced composite material cable of the present invention is formed by twisting a plurality of, for example, 7, 19, and 37 composite material wires in order to develop adhesion to mortar and concrete. It is. For example, FIG.
In addition, seven composite material wires 12, 14, 16, 18, 2
1 shows a fiber reinforced composite material cable 10 in which 0, 22, and 24 are twisted. Each composite material wire is twisted but not adhered to each other, and even if the breaking load level is increased by increasing the number of wires, the composite material wires slide, so that the fiber reinforced composite material cable is high. Exhibits flexibility. Therefore, since the bending can be performed with a small radius of curvature, the reel can be compactly wound and the efficiency of storage and transportation is high. In addition, it is also possible to bury it in concrete in a curved state at the time of use. The number of composite material wires constituting the fiber reinforced composite material cable is 3 to
The number is preferably 91 and more preferably 3 to 37.
If the number is less than two, the bending rigidity is high, and it is difficult to wind the reel. On the other hand, if the number is more than 91, the arrangement of the composite material wires tends to be disordered, which is not preferable. Although it depends on the twisting method, when the number of composite material wires is four or more, it is possible to form a composite material wire surrounded by other composite material wires and not exposed on the surface. In such a case, in the present invention, a composite material wire rod exposed to the surface and directly in contact with concrete, for example, when a fiber reinforced composite material cable is buried in concrete (the composite material wires 12 and 12 in FIGS.
14, 16, 18, 20, and 22) are referred to as external strands, and the composite material wire not exposed on the surface (the composite material wire 24 in FIGS. 1 and 2) is referred to as an internal strand.

Each composite material rod is constituted by covering the periphery of a reinforcing fiber 26 with a matrix resin layer 28. The reinforcing fiber 26 is not particularly limited as long as it can be generally used for a fiber-reinforced composite material. For example, carbon fiber,
Aramid fiber, glass fiber and the like are preferred, and carbon fiber is particularly preferred. Chemical fibers such as polyester fibers, polyamide fibers, polyethylene fibers, and polypropylene fibers can also be used. The fiber form is preferably a continuous multifilament yarn. A spun yarn made of cut fibers such as spun yarn or short fibers may be used. It is appropriate that the reinforcing fiber is a fiber bundle obtained by combining a plurality of reinforcing fibers, in which case,
A single type of reinforcing fiber tow may be used, or a plurality of types of reinforcing fiber tow may be combined.

[0008] Matrix resin layer 28 of composite material rod
Depending on the application, any resin such as thermosetting, thermoplastic, photocurable or electron beam curable can be used. For thermosetting resin, epoxy resin, phenol resin,
Vinyl ester resins, unsaturated polyester resins and the like are preferred. The method for impregnating the reinforcing fibers with the resin is not particularly limited. Although it may be performed in-line during the manufacturing process, it is preferable to use a tow prepreg or a yarn prepreg impregnated with a resin in advance. Also,
As shown in FIG. 3, each composite material wire 50 may be a fiber bundle composed of a plurality of composite material wires 51. In this case, a fiber bundle made of a single type of composite material wire or a fiber bundle made of a plurality of types of composite material wire may be used. It is also possible to form a coating layer by further arranging a fiber made of a thermoplastic resin or the like around each composite material wire or composite material wire bundle. In that case, in order to smooth the composite material wire, it is preferable to arrange the fibers for the coating layer in substantially the same orientation as the fiber orientation of the composite material wire. In a composite material wire rod, when the coating of the matrix resin on the reinforcing fibers is insufficient, the reinforcing fibers may be exposed, but this coating layer can prevent the exposure of such reinforcing fibers. .

In the fiber reinforced composite material cable according to the present invention, at least one of the plurality of composite material wires constituting the cable has a convex portion formed on a peripheral surface thereof. Hereinafter, the composite material wire having the convex portions is referred to as a convex forming wire. The convexity forming element wire is arranged at a position exposed on the surface of the fiber reinforced composite material cable, that is, as an external element wire, whereby the adhesion to concrete is improved. As the protrusion, for example, as shown in FIG. 1, a protrusion 3 spirally formed on the peripheral surface of the composite material wire rod is used.
0, convex portions 32 independently formed in an annular shape as shown in FIG. 4, and convex portions 34 in which point-like ones are scattered as shown in FIG.
And the like. Such a convex portion is provided by winding a fiber or forming a resin into a predetermined shape. For example, the spiral convex portion 30 is made of carbon fiber, aramid fiber, glass fiber, polyester fiber, polyamide fiber,
It is easily formed by winding a polyethylene fiber or the like. When a fiber is wound to form a convex portion, the fiber for the convex portion may or may not be twisted. The protruding fiber can be used by combining a plurality of tows. As described above, the spiral convex portion has an advantage that its formation is easy. If the helical convex portion is used, when a tensile force is applied to the fiber reinforced composite material cable, a rotational force is generated in the fiber reinforced composite material cable, and the mortar at a portion corresponding to the convex portion may be broken. However, in the present invention, as described later, the manner of twisting the fiber-reinforced composite material cable or the composite material wire, or the aspect (for example, the spiral direction) of the convex portion formed on each composite material wire to be combined is determined. By adjusting, such a problem can be solved. In addition, the annular or dot-shaped convex portions formed independently can be stably used without such a problem.

The height of the convex portion is suitably 0.01 to 1.0 mm. If the thickness is 1.0 mm or more, the adhesion between the mortar and concrete is good, but the friction between the composite material wires increases and the wear becomes severe. On the other hand, if it is less than 0.01 mm, mortar or concrete adhesion does not appear. In the case of a spiral projection, the width is 0.5 to 10 mm
Preferably, the pitch (helical winding cycle) is 0.6 to 10 mm
Is preferred. Although a convex forming wire may be used as the internal wire, it does not need to be a convex forming wire since it does not directly affect the adhesiveness of concrete. In the case of a spiral projection, as shown in FIG. 1, it is desirable that the spiral winding be wound with an interval without overlapping spirals. If the spirals are densely wound (the spiral winding cycle is 0 mm or less) so that adjacent spirals come into contact with each other, the actual height decreases and concrete adhesion is not sufficiently exhibited. In this case, the adhesiveness of the concrete due to the projections is remarkably improved.

As the fiber-reinforced composite material cable, a single type of composite material wire having the same type of convex portion is used by twisting, and a composite material wire having different types of convex portion is formed. Can be used. For example, a composite material wire having a spiral convex portion and a composite material wire having an annular convex portion can be used in combination. Also,
Also in the spiral convex portion, a composite material wire having a different spiral direction, for example, a composite material wire having a left-handed spiral convex portion (in FIG. 1, composite material wires 12, 18, and 20) and a right-handed spiral material are used. A composite material wire having a spiral projection (FIG. 1,
Composite material wires 14, 16, 22) can also be used in combination. Further, composite material wires having different spiral winding pitches and different spiral convex portions may be used in combination. Further, a composite material wire having no convex portion (the composite material wire 24 in FIG. 1) can be used in combination. In this case, since the composite material wire having no convex portion has little contribution to concrete adhesion, it is desirable to arrange the wire so as to be an internal element wire. In the present invention, the concrete adhesion strength can be controlled by adjusting the number of convex forming wires in the external wires, the convex shape, and the like. Also, by spraying particulate matter such as silica sand on the coating layer made of the matrix resin, the friction coefficient of the surface can be increased and the adhesion can be further improved.

In the fiber reinforced composite material cable of the present invention, since the composite material wires are not adhered to each other, there is a possibility that the internal wires that are not in contact with concrete may come off. By forming a large number of projections on the surface of the wire, the friction between the composite material wires can be increased and adjusted to prevent the internal strand from coming off. Also, by increasing the diameter of the inner strand, the friction with the outer strand can be increased. Furthermore, at the time of construction, it can also be dealt with by untwisting the ends of the outer strand and bonding the outer strand to the inner strand.

An example of a method for manufacturing the fiber-reinforced composite material cable of the present invention will be described with reference to FIG. The following production example relates to a fiber-reinforced composite material cable made of a composite material wire having a spiral projection. First, the reinforcing fibers 26 are immersed in a matrix resin in a resin impregnation bath 36, and then pass through a die 38, preferably to control the amount and form of the resin. When the impregnated matrix resin is a thermoplastic resin, the die 38 is in a heated state. In the case of using a reinforced fiber bundle that has been twined as the reinforcing fiber, it may be introduced into the resin-impregnated layer 36 after the twining, but after immersing each reinforcing fiber in the matrix resin in the resin-impregnation tank 36, It is preferable that the yarns are combined by the die 38 because the resin is sufficiently impregnated.

On the composite material wire (including the composite material wire bundle) that has passed through the die 38, the convex fiber is wound by the spiral winding device 40 for forming the convex portion to form the convex portion. The fibers for the convex portions may be either impregnated with the resin or not impregnated. In the case of non-impregnation, the impregnation may be performed by sucking up the resin of the composite material wire. Since the viscosity of the resin is reduced in the subsequent steps such as heating, the impregnation is promoted.

The composite material wire having a convex portion formed on its surface passes through a curing device 42 having a heating furnace, a cooler, and the like, and is twisted by a false twist device 44. At this time, when the impregnated matrix resin is a thermosetting resin,
The twist added by the false twist device 44 is mainly twisted in the vicinity of the die 38 where the matrix resin is not yet cured,
When the impregnated matrix resin is a thermoplastic resin, the heating device 42 mainly twists. As described above, the curing device 42 that performs resin softening and resin curing is provided on the false twist side (upstream of the false twist device 44) of the false twist device 44, and the resin is softened and cured while applying false twist. Thereby, a twist-hardened composite material wire having a circular cross section maintained by twisting on the twisting side near the false twisting device 44 is obtained. In addition, the spiral winding of the convex fiber on the surface promotes a circular cross section of the composite material wire. In addition, resin softening means lowering the viscosity of the resin by heating in the case of a thermosetting resin, plasticizing by heating in the case of a thermoplastic resin, and resin curing is curing by heating in the case of a thermosetting resin, In the case of a thermoplastic resin, it means solidification by cooling. Also, the curing device 42
When the matrix resin is a photo-curable resin or an electron beam-curable resin, it may be provided with a heating device for softening the resin, and a light irradiation device or an electron beam irradiation device for curing the resin. As the false twisting device 44, for example, as shown in FIG. 7, a cylindrical rotating body 47 internally provided with rollers 45, 45,... For feeding the composite material wire 50 to the downstream side. Thus, a device that rotates about the feeding direction of the composite material wire 50 as an axis may be employed.

As shown in FIG. 8, the plurality of composite material wires having the projections formed thereon are converged by the converging guide 52 after their relative positions are controlled by the guide plate 46, and are then conveyed to the twisted winding bobbin 48. It is wound up. Twisted winding bobbin 48
Is rotated in a direction B perpendicular to the winding direction,
Twisting corresponding to the elimination of the twisting torque of the plurality of composite material wires is performed, and at the same time, the fiber material reinforced composite material cable 10 is obtained by rotating in the winding direction A. Thus, according to this manufacturing method, it is possible to manufacture from a reinforcing fiber to a fiber-reinforced composite material cable in one step.

In the case where the convex portion is annular as shown in FIG. 4, it is desirable to manufacture as follows. First, for example, using a coating die for pumping a resin by a pump as shown in FIG.
As shown in (1), a matrix resin composed of a thermosetting resin having thixotropic properties is applied to the reinforcing fibers 26 or the reinforcing fiber bundle to form a matrix resin layer 54. Thixotropic refers to the property of being able to be used for coating and not causing substantial flow upon curing, and is generally a commercially available thixotropic thermosetting resin (for example, “1 liquid epoxy #
2247 "(manufactured by Three Bond Co., Ltd.) can be used, but it is easily provided by mixing a resin with a fine powder having a polar group such as acetylene black or colloidal silica. Also, an oxide of a metal such as lead or vanadium and an alkoxysilane having a functional group may be combined. In the case of a reinforcing fiber bundle, in order to further increase the flexibility,
It is desirable that the matrix resin be present only on the surface of the reinforcing fiber bundle and have a resin viscosity and a coating method that do not enter between the reinforcing fibers.

FIG. 10 shows the composite material wire rod 60.
As shown in FIG. 5, the tip of a tongue blade 58 attached to the inner peripheral surface of the cylindrical rotating body 56 is
And the matrix resin layer is partially cut to form a portion having a small layer thickness.
Are formed on the matrix resin layer 54.
Note that the cylindrical rotating body 56 and the composite material wire 60 only need to rotate relatively, and the cylindrical rotating body 56 may be fixed and the composite material wire 60 may be rotated. It is also possible to make the cylindrical rotating body 56 also serve as a rotating coating die.

It is also desirable to form an independent annular projection by the following method. In the same manner as above, the composite material wire having the matrix resin layer
As shown in (1), the fastening yarn 62 is densely wound at a pitch equal to or less than the width of the fastening yarn 62. Then, by tightening the fastening threads 62, the matrix resin is brought to the downstream side (left side in FIG. 11) and rises. When the winding width of the fastening thread 62 becomes a predetermined width, by cutting the fastening thread 62 or loosening the fastening force,
A place where the fastening thread 62 is not wound is provided with a predetermined width, and again,
It is wound around the matrix resin layer 54 with the fastening thread 62 and tightened. In this way, by intermittently tightening and winding with the fastening thread 62, the portions where the fastening thread 62 is not wound become the projections 32, 32,. By repeating this operation, a plurality of independent annular convex portions 32, 3
2,... Are formed.

After shaping the above-mentioned independent annular convex portion,
In the same manner as described above, this is heated and the matrix resin is cured and twisted to form a twisted and cured composite material wire.Then, they are bundled and wound by a twisted winding bobbin to obtain a fiber reinforced composite material. Cable. According to this exemplified means, since the matrix resin has thixotropy, dripping of the resin at the time of heat curing is suppressed, and the convex portion can be formed more accurately. According to the method for forming the independent annular convex portion by such means, it is possible to form a convex portion of a predetermined size having an accurate shape without using complicated means such as a mold. In particular, the means for intermittently tightening and winding the fastening yarn has an effect of preventing the occurrence of cracks which may occur in the composite material wire rod, and is economically excellent. In addition, as for the formation of the convex part, it is also possible to form it using a die, as described in JP-A-1-65872, in either a spiral shape or an independent shape. However, in this method, the mold is difficult to remove unless the thermosetting resin of the matrix resin is completely cured with a heating die, so that the production is not easy,
It is difficult to twist.

[0021]

EXAMPLES Example 1 A fiber-reinforced composite material cable was manufactured using the apparatus shown in FIG. First, 13 pieces of 0.8 g / m carbon fiber tow ("Carbon Fiber Pyrofil TR30W12L" manufactured by Mitsubishi Rayon Co., Ltd.) are plied, and then twisted 5 times per 1 m, and plied. A book reinforcing fiber bundle was prepared. And these reinforcing fiber bundles are
After being led to a resin impregnation tank 36 filled with an epoxy resin having a next transition temperature of about 120 ° C. and impregnated, the epoxy resin was removed by a die 38 to a resin content of 34%. Then 7
One of the composite material wire bundles was not spirally wound, and the other six composite material wire bundles were combined with three 840-denier nylon fibers by the spiral winding device 40 for forming convex portions. The fibers for the convex portions were spirally wound at a twist pitch of 3.5 mm.
After that, these seven composite material wire bundles 50 are
After that, it was led to a false twist device 42. By the false twist device 42,
The composite material wire bundle impregnated with epoxy resin is
It was cured with about 10 turns of Z-direction twist applied. The seven composite material wire bundles 50 thus obtained are bundled by the guide plate 46 or the focusing guide 52, and 1 m
The fiber reinforced composite material cable was manufactured by winding it around a twisting winding bobbin 48 having a body diameter of 1.5 m while applying about 2.0 times of Z twist. The protruding part has a height of about 0.1 mm and a width of about 2.2.
It was 0 mm.

Example 2 A composite material wire bundle using 30 carbon fibers ("TR30W12L") used in Example 1 was 1 m.
And twisted three times, and helically wound three 840-denier nylon fibers on three composite material wire bundles using the fiber for convex parts in the same manner as in Example 1 to form convex parts. did. Then, after twisting with a false twisting machine, the take-up machine was twisted 1.5 times per 1 m in the Z direction and wound up on a twisting winding bobbin having a body diameter of 2 m. The total number of twists of the composite material wire is 5 times per meter in the Z direction, the spiral pitch of the protrusion on the composite material wire is 4.0 mm, the width of the protrusion is 2.0 mm, and the height of the protrusion is 0.1 m.
m.

[Test Example] Each of the fiber reinforced composite material cables and PC steel stranded wires of Comparative Examples 1 and 2 described above (Comparative Example)
JSCE-E539-19 "Testing method for bond strength between continuous fiber reinforcement and concrete by pull-out test" in JSCE "Guidelines for Design and Construction of Concrete Structures Using Continuous Fiber Reinforcement"
95) ”, a concrete adhesion test was conducted.
Further, with respect to the fiber-reinforced composite material cables of Examples 1 and 2, the strength utilization efficiency of the tensile load was also measured. The strength utilization efficiency is a value obtained by dividing the measured breaking load of the fiber-reinforced composite material cable by its theoretical value. The theoretical value is obtained by multiplying the breaking load of the reinforcing fiber per fiber by the number of fibers used. Further, with respect to the fiber-reinforced composite material cables of Examples 1 and 2, reels were wound around cores having various body diameters, and the minimum diameter that could be wound without any trouble was examined. Table 1 shows the results.

[0024]

[Table 1] As is clear from Table 1, the fiber-reinforced composite material cable of this example has high adhesiveness to concrete and high strength utilization efficiency. Furthermore, it has sufficient flexibility and can be wound around a small diameter reel.

[0025]

The fiber reinforced composite material cable of the present invention has good adhesion to mortar or concrete, and has flexibility even when the breaking load is increased, so that the reel wound with a small radius of curvature can be obtained. Thus, storage, transportation, etc. can be performed more compactly. In particular, the fiber reinforced composite material cable according to the second aspect has high adhesiveness to concrete and can be easily manufactured by the method according to the fourth aspect. Further, the fiber reinforced composite material cable according to the third aspect has high adhesiveness to concrete and can be stably embedded in concrete and used. Claim 5,
According to the manufacturing method of the sixth aspect, the fiber reinforced composite material cable can be easily manufactured. In particular, the fiber reinforced composite material cable manufactured by the method of the sixth aspect has high durability.

[Brief description of the drawings]

FIG. 1 is a side view showing an example of a fiber-reinforced composite material cable.

FIG. 2 is a sectional view taken along the line II-II of FIG.

FIG. 3 is a side view showing an example of a composite material wire bundle.

FIG. 4 is a side view showing an example of a composite material rod.

FIG. 5 is a side view showing an example of a composite material rod.

FIG. 6 is a schematic configuration diagram illustrating an example of a method for producing a fiber-reinforced composite material cable.

FIG. 7 is a side sectional view showing an example of a false twist device.

FIG. 8 is a partial perspective view showing an example of a method for manufacturing a fiber-reinforced composite material cable.

FIG. 9 is a side view showing an example of a composite material rod.

FIG. 10 shows a production example of a composite material wire rod, and FIG.
0 (a) is a side sectional view, and FIG. 10 (b) is a front view.

FIG. 11 is a side view showing an example of a method of manufacturing a composite material rod.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Fiber reinforced composite material cable 12 Composite material wire 14 Composite material wire 16 Composite material wire 18 Composite material wire 20 Composite material wire 22 Composite material wire 24 Composite material wire 26 Reinforcement fiber 28 Matrix resin layer 30 Convex part 32 Convex part 34 Convex part Reference Signs List 50 composite material wire 54 matrix resin layer 60 composite material wire 62 fastening thread

Claims (7)

[Claims] 1. A composite material wire having at least one composite material having a convex portion formed on a peripheral surface thereof is twisted, and the composite material wire having the convex portion is arranged at a position exposed to the surface. A fiber-reinforced composite material cable. 2. The fiber-reinforced composite material cable according to claim 1, wherein the convex portion is formed in a spiral shape with an interval on a peripheral surface of the composite material wire. 3. The fiber-reinforced composite material cable according to claim 1, wherein a plurality of the protrusions are formed independently. 4. A composite material wire having a matrix resin layer formed around a reinforcing fiber, a convex fiber is spirally wound with an interval, and the matrix resin layer is cured to obtain a plurality of composites. A method for producing a fiber-reinforced composite material cable, comprising: bundling and twisting material wires. 5. After forming a matrix resin layer made of a thermosetting resin having thixotropic properties on the surface of the reinforcing fiber, and forming an independent convex portion on the matrix resin layer,
A method for producing a fiber-reinforced composite material cable, comprising heating and curing the matrix resin layer, and bundling and twisting the obtained plurality of composite material wires. 6. The method for producing a fiber-reinforced composite material cable according to claim 5, wherein the shaping of the independent convex portions is performed by partially cutting the matrix resin layer. 7. The method for producing a fiber reinforced composite material cable according to claim 5, wherein the shaping of the independent convex portion is performed by partially winding a fastening thread around the matrix resin layer.