JP2003328499A - Long fiber-reinforced plastic reinforcing body and long fiber-reinforced plastic reinforcing net body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To use a long fiber-reinforced plastic reinforcing body as a main reinforcement material in place of a reinforcement, and to improve efficiency on the execution of works and excellently ensure a safety. <P>SOLUTION: A long fiber bundle is coated with an adhesive wholly or partially. A fixed tension is applied to the long fiber bundle along the stretching direction of the bundle before the adhesive is cured, and the long fiber-reinforced plastic reinforcing body A is formed by releasing the fixed tension after the adhesive is cured while the reinforcing body A has a reinforcing body main piece 1 stretched in one direction and anchor pieces 2 integrally molded at the end sections of the main pieces 1. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a long fiber reinforced plastic reinforcement and a long fiber reinforced plastic reinforcement mesh.

[0002]

2. Description of the Related Art Conventionally, concrete structures have generally been reinforced by reinforcing bars. The reinforcing bars are provided on the side edges located inside a certain width from the surface of the structure. A large number of reinforcing bars are arranged at an integral interval, and a surface layer portion having a constant interval (for example, 3 cm to 5 cm), that is, a "fog" is provided between the reinforcing bar and the surface of the structure.

By providing the "fog" in this way, even if the surface of the structure which is in contact with air changes from alkaline to neutral due to carbon dioxide in the air,
It takes a certain period of time (for example, 50 years or more) before the "fog" part is neutralized. At least during this certain period, the rebar is neutralized and further oxidized. By preventing corrosion, the reinforcing function of the structure by the rebar is well secured.

This is especially true when the reinforcing bars start to corrode,
The strength against the tensile force of the reinforcing bar is reduced, and the reinforcing function for the concrete structure, which is weak against tensile force, cannot be secured well, and the surface of the structure pops off (so-called pop-out), This is because, in some cases, the floor portion supported by the concrete columns may fall, resulting in the life of the building itself being exhausted.

[0005]

However, when reinforcing bars are arranged in the above-mentioned concrete structure, the following problems still occur.

(1) Since many reinforcing bars are arranged in a concrete structure, skill and labor are required for the reinforcing bar work.

That is, in the rebar work, since the reinforcing bars are connected to each other by welding, skill and time are required for such welding work. Especially, in the case of a high-rise building, the reinforcing bars are inevitably inevitable. Since the number of welded wires increases, the number of welding points in the rebar work greatly increases, and the construction cost becomes high. Therefore, simplification of the rebar work and reduction of the construction cost are desired.

When constructing a concrete structure, it is obligatory to cover the tip of the protruding reinforcing bar with a protective cap, but the number of reinforcing bars is large. It takes a lot of time to cover the cap.

(2) Since a large amount of rebar is brought into the site, the transportation cost is high.

(3) Since the structure is provided with a large "fogging" to protect the reinforcing bars that are easily corroded, the cross-sectional area of the pillar main body is correspondingly increased, and the weight of the upper structure is increased. As a result of the increase, and inevitably, the foundation for supporting fine objects also increases, resulting in higher material costs and construction costs.

Moreover, in the case of a building, there is a problem that the living space becomes narrower as the cross-sectional area of the pillar main body becomes larger.

[0012]

Therefore, in the present invention, an adhesive is applied to a long fiber bundle wholly or partially, and the long fiber bundle is uniformly applied to the long fiber bundle before the adhesive is cured. Is applied to form a long-fiber-reinforced plastic reinforcement by releasing a certain tension after the adhesive is cured, and the long-fiber-reinforced plastic reinforcement is a reinforcing body piece extending in one direction. The present invention provides a long-fiber-reinforced plastic reinforcement body, which comprises an anchor piece integrally formed at the end of the reinforcement body piece.

The present invention is also characterized by the following configurations.

(1) The anchor piece is formed in a loop shape.

(2) The anchor piece is formed as a male screw by spirally winding a string-like body around the end of the reinforcing body piece and adhering the same with an adhesive.

Further, according to the present invention, there is provided a long-fiber-reinforced plastic reinforcing net body comprising the above-mentioned long-fiber-reinforced plastic reinforcing body as a main reinforcing material, which comprises a plurality of the long-fiber-reinforced plastic reinforcing bodies extending in the front-rear direction. A plurality of flexible connecting bodies that extend in the left-right direction are arranged in a cross shape at intervals in the front-rear direction by arranging them at intervals in the direction. The present invention provides a long-fiber-reinforced plastic-reinforced net body, which is formed by connecting a plurality of long-fiber-reinforced plastic-reinforced bodies together to form a net-like shape.

A feature is that a long fiber bundle extending in the left-right direction is used as the connecting body, and the crossing portion of the connecting body and the long fiber reinforced plastic reinforcing body are bonded and bonded with an adhesive. .

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below.

That is, in the long-fiber-reinforced plastic reinforcement according to the present invention, an adhesive is applied to the long-fiber bundle in whole or in part, and the long-fiber bundle is stretched along its extension direction before the adhesive is cured. A constant tension is applied to the long-fiber-reinforced plastic reinforcement after the adhesive has hardened to form a long-fiber-reinforced plastic reinforcement, and the long-fiber-reinforced plastic reinforcement is a reinforcing body piece that extends in one direction. And an anchor piece integrally formed with the end of the reinforcing body piece.

The anchor piece may be formed in a loop shape, or a cord-like body may be spirally wound around the end portion of the reinforcing body piece and adhered with an adhesive to form a male screw shape. You can also do it.

Further, the long fiber reinforced plastic reinforced mesh body according to the present invention is a long fiber reinforced plastic reinforced mesh body having the above long fiber reinforced plastic reinforcement body as a main reinforcing material, and is composed of a plurality of longitudinally extending fibers. The long fiber reinforced plastic reinforcement is placed with a space left and right,
A plurality of flexible connecting bodies extending in the left-right direction are arranged in the long-fiber-reinforced plastic reinforcing bodies in a cross shape with an interval in the front-rear direction, and a plurality of long-fiber-reinforced plastic reinforcing bodies are provided by each connecting body. Are connected to form a net.

A long fiber bundle extending in the left-right direction is used as the connecting body, and the crossing portion between the connecting body and the long fiber reinforced plastic reinforcing body is bonded and bonded with an adhesive.

[0023]

Embodiments of the present invention will be described below with reference to the drawings.

(Explanation of Long Fiber Reinforced Plastic Reinforcement as First Embodiment) A shown in FIG. 1 indicates the first embodiment according to the present invention.
It is a long fiber reinforced plastic reinforcing body (hereinafter abbreviated as “reinforcing body”) as an example, and the reinforcing body A is shown in FIG.
As also shown, the constrained body K1 into which the prestress P is introduced one-dimensionally and the outer peripheral surface of the constrained body K1 are covered, and the constrained body K1 expands in a direction orthogonal to the extension direction. A first constraining body K2 that constrains the strain to be restrained, and a first constraining body K2 that is helically wound around the outer peripheral surface of the first constraining body K2 to constrain the strain that the constrained body K1 expands in a direction orthogonal to its extension direction. Two restraint bodies K2 are provided and prestress is introduced two-dimensionally.

As shown in FIG. 1, the constrained body K1 includes a reinforcing body piece 1 extending in one direction and the reinforcing body piece 1.
Anchor pieces 2, 2 integrally formed at both ends of the anchor piece 2 are provided, and each anchor piece 2 is formed in a loop shape.

Moreover, as shown in FIGS. 2 to 5, the constrained body K1 is obtained by applying the adhesive 4 to the long fiber bundle 3 as a whole and before the adhesive 4 is cured. For example, a constant tension F (for example, 5 kg) is applied to the bundle of long fibers 3a (12,000 pieces (12K)) along the extension direction, and after the adhesive 4 is cured, the constant tension F is released to be cured. The prestress P along the extending direction of the long fiber bundle 3 is introduced into the adhesive 4 described above.

That is, as shown in FIG. 2 (a), the long fiber bundle 3 includes, for example, 12,000 (12K) bundles of long fibers 3a,
Further, a bundle of 120 pieces can be used. As shown in FIG. 2 (b), the long fiber bundle 3 wound around the bobbin 5 is pulled out and the liquid adhesive 4
The adhesive 4 is applied to the same-length fiber bundle 3 by immersing it in the inside and pulling it out in the direction a. 6 is an adhesive agent tank, 7 is a drawing guide roller, and 8 is a dipping guide roller.

The long fibers 3a need not be corroded at least, are lightweight and have high tensile strength, and are preferably those having excellent impact resistance and heat resistance.

Examples of the long fibers 3a used include carbon fibers, PBO (polyparaphenylene benzoxazole) fibers, aramid fibers, Kepler fibers, and Zylon fibers.

In addition, the constant tension F (for example, 5 kg) is applied to the long fiber bundle 3 in advance, in addition to the introduction of the prestress P, the relative looseness or displacement deformation between the long fibers 3a, 3a, and Is also for correcting variations.

That is, after the adhesive 4 is applied to the long fiber bundle 3 over the entire circumference (total length) while a constant tension is applied to the long fiber bundle 3 in advance, and after the adhesive 4 is cured. , Both ends of the fixed long fiber bundle 3 were removed from the locking pieces provided in the reinforcing body manufacturing apparatus B described later, and the constant tension F (for example, 5 kg) applied in advance was released and cured. Prestress P along the extending direction of the long fiber bundle 3 can be introduced into the adhesive 4.

As a result, variations in the tensile strength of the long fiber bundle 3 can be reduced, the effective tensile strength can be increased, and the handleability can be improved, and the adhesive 4
Adhesion between the long fibers 3a can be improved.

Therefore, since the adhesive 4 does not require high adhesive strength, it is possible to use an inexpensive adhesive that cures at room temperature, for example, room temperature (20 ° C. to 30 ° C.).
It hardens after 10 to 48 hours and the tensile strength σ _p = 500kgf
/ cm ² can be used those having ～1,000Kgf / cm ^2, curing time, by using Joule heat (60 ° C. to 70 ° C. weak) by passing a direct current to the long-fiber bundle 3, the working conditions By selecting the type of adhesive 4 according to the
It can be set within a range of 2 hours.

Moreover, after the adhesive 4 is cured, a certain tension is released, and the cured adhesive 4 is bundled with the long fiber bundles 3.
By introducing the pre-stress P along the extension direction of (1), the constrained body K1 having good tensile strength can be manufactured at low cost in a short time.

The adhesive 4 can be applied not only over the entire circumference (full length) of the long fiber bundle 3 but also partially applied and cured at required places.

The shape of the reinforcing member A is not limited to the case where it is formed in a straight shape as described above, and it can be designed to have a desired shape. Forming into a "V" shape is also possible with the long fiber bundle 3
Can be formed in a gate shape.

As shown in FIGS. 1 and 6, the first constraining body K2 is formed by winding a strip-shaped long fiber bundle 3 around the outer peripheral surface of the constrained body K1 while applying a constant tension.

As shown in FIGS. 1 and 6, the second restraint K3 is formed by spirally loosening a cord-like body on the outer peripheral surface of the first restraint K2 while applying a constant tension.

Here, as described above, the reinforcing body A according to the present invention has a two-dimensionally prestressed structure. The longitudinal direction is the X axis, the radial direction is the r axis, and
If the circumferential and theta axes, the adhesive 4 that is cured will be stress in the X-axis direction sigma _x and r-axis direction of the stress σ _r (≒ σ _θ) acts, in a sigma _x and sigma _r Two-dimensional, σ _x and σ _r and σ _θ (≒
Since it becomes an axial symmetry problem which becomes three-dimensional with (σ _r ), it was made two-dimensional.

(Explanation of Reinforcement Manufacturing Apparatus) FIG. 6 shows a reinforcement manufacturing apparatus B for manufacturing the above-mentioned reinforcement A.
In the reinforcement manufacturing apparatus B, a pair of left and right shaft support bases 10 and 11 are arranged at regular intervals in the left and right direction, and both shaft support bases 10 and 11 are arranged.
The rotating shafts 12 and 13 are attached to the rotating shafts 12 and 13 so as to face each other in the left-right direction, and the locking pieces 16 and 17 are attached to the rotating shafts 12 and 13 via the rotating bodies 14 and 15.
On the other hand, drive motors 18 and 19 are arranged near the shaft support bases 10 and 11 between the output shafts 20 and 21 of the drive motors 18 and 19 and the rotary shafts 12 and 13, respectively. The transmission belts 22 and 23 are linked to each other via pulleys 24, 25, 26 and 27.

(Explanation of Reinforcement Manufacturing Method) Next, a method of manufacturing the reinforcement A in which the prestress is two-dimensionally introduced by the above-described reinforcement manufacturing apparatus B will be described.

(1) As shown in FIG. 6, a long fiber bundle 3 in which an adhesive 4 is applied between the two locking pieces 16 and 17 of the reinforcement manufacturing apparatus B.
Is applied in a parallel chord shape for a required number of times while applying a constant tension to form a constrained body K1.

(2) As shown in FIG. 6, the long fiber bundle 3 in the form of a narrow strip and coated with the adhesive 4 is spirally formed while applying a constant tension from the left end of the restrained body K1. The first restraint body K2 is formed by winding and covering.

At this time, the first constraining body K2 is made into a narrow strip shape and the tip of the long fiber bundle 3 coated with the adhesive 4 is attached to the constrained body K1.
It is adhered to the left end portion of the reinforcing body piece 1 which is, and is pulled in the same state to apply a constant tension, and the pair of left and right drive motors 18 and 19 are rotated in synchronism to form a pair of left and right. The long fiber bundle 3 is wound around the outer peripheral surface of the reinforcing body main piece 1 by rotating the constrained body K1 wound between the locking pieces 16 and 17 around the axes of the pair of left and right rotating shafts 12 and 13. Further, by slowly moving the same-length fiber bundle 3 in the right direction b in parallel with the reinforcing body main piece 1, the outer peripheral surface of the reinforcing body main piece 1 is easily spirally wound and covered (wrapping). Can be formed. c indicates the rotation direction of the restrained body K1.

(3) As shown in FIG. 6, in the same manner as in the case of deformed rebar, when the adhesion performance with concrete is enhanced, the second restraint is applied to the outer peripheral surface of the first restraint K2 in parallel with this wrapping. A string-shaped piece such as a fiber material as the body K3 is spirally wound at a substantially constant pitch while slowly moving in the right direction d.

(4) As shown in FIG. 3, the constrained body K1 to which a tension F is one-dimensionally applied in the left-right direction, and the constrained body K1.
When the adhesives 4, 4 applied to the first constraining body K2 coated (wrapped) on the outer peripheral surface of each of the two have hardened, each locking piece 1
The constant tension F applied is released by removing the anchor pieces 2 and 2 which are locked to 6 and 17 from the locking pieces 16 and 17, respectively.

In this way, as shown in FIG. 4, the pre-stress P along the extending direction (left-right direction) of the constrained body K1 is applied to the cured adhesive 4, and the restraining body K2 is supported as shown in FIG. By introducing a prestress (not shown) along the circumferential direction, the expansion force f1 for expanding the constrained body K1 in the direction (radial direction) orthogonal to the extending direction of the constrained body K1 is restrained by the first and second restraints. One-dimensional prestress P introduced into the restrained body K1 by restraining the body K2, K3 and acting as a restraining force f2 acting on the restrained body K1 side by the first and second restraining bodies K2, K3. The first and second restraint bodies K2, K
It is possible to contain it by 3.

That is, the rod-shaped restrained body K1 in which the prestress P is introduced one-dimensionally is generally easily warped due to eccentric force and the like, but there is a certain limit for a long object requiring linearity. As described above, the first and second restraint bodies K2, K
In the reinforcing body A in which the prestress P is introduced in a two-dimensional manner by being restrained by 3, the prestress P acting on the restrained body K1 in a one-dimensional manner compresses the matrix of the cured adhesive 4 and It tries to swell in the direction of body K1 and causes strain.

On the other hand, the first and second constraining bodies K2 and K3 on the outer periphery for wrapping the constrained body K1 suppress this bulge, and the matrix of the cured adhesive 4 of the constrained body K1 is the same. As a reaction force, it receives a compressive force in the radial direction from the outside toward the center.

As a result, the constrained body K1 is prestressed in two directions (the extending direction of the constrained body K1 and its radial direction) (a confine effect is obtained). This is one of the examples in which the two-dimensional prestressing principle is introduced into the reinforcing body A, and this type of bar material is mainly used as a tensile force material, a bending material, a torsion material, or the like.

As described above, in the rod-shaped reinforcing body A manufactured as described above, the one-dimensional prestress P introduced into the restrained body K1 can be secured as set.

(Explanation of Modification Example of Reinforcement Body) FIG. 7 shows a modification example of the reinforcement body A, which is formed on the outer peripheral surface of the reinforcement body piece 1 which is the restrained body K1. 2 It is made by winding the restraint body K3.

In this way, the reinforcing body main piece 1 which is the restrained body K1 is restrained by the second restraining body K3 to form the reinforcing body A in which the prestress is two-dimensionally introduced.

(Description of Long Fiber Reinforced Plastic Reinforcing Net) C shown in FIG. 8 is a long fiber reinforced plastic reinforced net according to the present invention (hereinafter abbreviated as "reinforcing net"). The body C is a net body including the above-mentioned reinforcing body A as a main reinforcing material.

That is, a plurality of reinforcing bodies A extending in the front-rear direction are arranged at intervals in the left-right direction, and a plurality of flexible connecting bodies 30 extending in the left-right direction are arranged in the reinforcing body A in the front-rear direction. The reinforcing members A, A are connected to each other by the connecting members 30 and are formed in a mesh shape while being arranged in an orthogonal state with a space therebetween.

A long fiber bundle 3 extending in the left-right direction is used as the connecting body 30, and the crossing portion of the connecting body 30 and the reinforcing body A is bonded and connected by an adhesive 4.

In this way, the reinforcement A as the required number of main reinforcements is formed in advance into the required shape,
A connecting body which can form the reinforcing netting C arranged with a predetermined length or interval and which connects the reinforcing body A.
Since 30 is flexible, the reinforcing body C can be easily arranged at a predetermined portion of a pillar portion, a beam portion, or a floor portion forming a part of a concrete structure. The reinforcement work as a material can be easily arranged.

Furthermore, since the reinforcing net C is formed by connecting the reinforcing members A by the flexible connecting member 30, the reinforcing netting C is rolled and bundled in the bending direction of the connecting member 30. Also, it can be folded and bundled, and can be stored and transported in a lightweight and compact state.

(First Modification of Reinforcing Net) FIG. 9 shows a reinforcing net C as a first modification.
The plurality of reinforcing bodies A extending in the left-right direction are arranged at intervals in the front-rear direction, and the plurality of flexible connecting bodies 30 extending in the front-rear direction are arranged at the reinforcing bodies A in the left-right direction. And a plurality of reinforcing bodies A, A are connected to each other by each connecting body 30 to form a net shape.

Moreover, in the reinforcing net C, the diagonal connecting body 31 having flexibility is arranged at a diagonal position, and the long fiber bundle 3 extending in the diagonal direction as the diagonal connecting body 31 is provided. The adhesive 4 is used to bond the portion that intersects the reinforcing body A and the connecting body 30.

In this way, the reinforcing mesh C is attached to the diagonal connecting body.
By providing 31, the reinforcing body A of the reinforcing net C
The seismic strength can be increased by arranging as the main reinforcing material of the concrete structure.

Moreover, since the connecting body 30 and the diagonal connecting body 31 are flexible, the reinforcing nettings A can be made light and can be compactly bundled, and in this case as well, they can be easily stored and transported.

In this way, by forming a plurality of long fiber bundles 3 having a strong tensile force as the main reinforcing member and the diagonal member, the long fiber bundles 3 as the main reinforcing member and the diagonal member are made of a concrete structure which is weak in the tensile force. Fulfills the function of reinforcing objects.

At this time, by arranging the diagonal members in an oblique cross shape, the seismic strengthening function of the concrete structure can be well ensured.

Moreover, by forming the main reinforcing material, the connecting material, and the diagonal members by the long fiber bundles 3, the reinforcing nets in which the diagonal members are arranged in an oblique pattern while the continuous long fiber bundles 3 are sequentially fed out by the machine. The reinforcing net C can be formed in the body C and can be mass-produced in a short time, and as a result, the manufacturing cost can be reduced.

(Second Modification of Reinforcing Net) FIG. 10 shows a second modification.
The reinforcing net C as a modification is shown, and the same reinforcing net C is shown.
Are three-dimensionally curved by forming the reinforcing body A as a main reinforcing member in a three-dimensional manner to form a three-dimensional net body.

In this way, the reinforcing body A is formed by adapting to the shape of the structure to be reinforced as the main reinforcing material, so that the reinforced work can be simplified.

Moreover, since the connecting body 30 has flexibility,
The reinforcing mesh bodies A can be compactly bundled, and also in this case, they can be easily stored and transported.

(Application Example of Reinforcing Net) FIG. 11 shows an application example in which the above-mentioned reinforcing net C is reinforced as a main reinforcing bar of a reinforcing bar structure.

As shown in FIGS. 12 and 13, the reinforcing mesh C is wrapped around a plurality of rectangular frame-shaped shape-retaining support frames 35 which are arranged facing each other at regular intervals in the vertical direction. The end portions are overlapped with each other (overlapping) and connected by, for example, a thin wire (in some cases, an adhesive is also used for connection), and the reinforcing mesh C and the shape-retaining support frame 35 are connected to each other. The crossing portions of are connected to form the post-shaped bar arrangement body 36.

Further, as shown in FIGS. 11 and 14, the reinforcing mesh C is wound around a rectangular frame-shaped shape-supporting support frame 37 which is arranged in an opposed state with a certain interval in the left-right direction. Then, the end portions are overlapped with each other (overlapping) and connected by, for example, a thin connection (in some cases, an adhesive is also used for connection), and at the same time, the reinforcing net C and the shape-retaining support frame 37 are connected. The beam-arranged body 38 is formed by connecting the intersections with and.

Here, the shape-retaining support frame bodies 35, 37 are formed by curing the long fiber bundles 3, 3 stretched in a closed circuit shape in a required rectangular frame shape with an adhesive 4.

In this way, the shape-retaining support frames 35, 37 are also
Since the long fiber bundles 3,3 stretched in a closed circuit form are hardened with an adhesive agent 4, the weight can be significantly reduced compared to a reinforcing bar, and transportability and workability can be improved. You can

In addition, the shape-retaining support frames 35 and 37 are the reinforcing members A.
Similarly, the continuous long fiber bundle 3 can be formed into a closed circuit while being sequentially fed out by a machine, and mass production can be performed in a short time, and as a result, the manufacturing cost can be reduced. it can.

Then, like the reinforcing body A, the shape-retaining support frame body
35 and 37 are also formed from long fiber bundles 3 and 3, so that the tensile strength, corrosion resistance and durability of the concrete structure with reinforcements A and A reinforced by the shape-retaining support frame 35 and 37 are reinforced. It is possible to ensure good durability, fire resistance, and earthquake resistance.

Further, in the columnar bar arrangement body 36, the shape-retaining support frame body is used.
The reinforcements A as main reinforcements are arranged around 35 around the required number of reinforcements A. Further, in the beam-arranged body 38, the reinforcements A around the shape-retaining support frame 37 are used as main reinforcements. Reinforcement bodies A are arranged with a predetermined number of openings at a predetermined interval.

At this time, the portions of the reinforcing body A and the connecting body 30 which intersect the shape-retaining support frame bodies 35 and 37 are bonded by the adhesive 4.

Therefore, as shown in FIGS. 11 and 12,
The upper part of the columnar bar arrangement 36 reinforced in the lower columnar part H is exposed, and the upper columnar bar arrangement is arranged on the upper canker piece 2 of the lower columnar bar arrangement body 36. The canker pieces 2 at the bottom of the muscular body 36 are made to overlap each other, and one rod-shaped connecting piece 40 extending in the anteroposterior direction is inserted into the canker pieces 2 and 2 which coincide with the anteroposterior direction. One rod-shaped connecting piece 41 extending in the left-right direction in the canker pieces 2, 2 that match the direction.
By inserting the upper and lower pillars of the bar arrangement 36,36
Can be easily connected.

Moreover, the upper and lower reinforcing bodies A, A forming a part of the upper and lower columnar bar arrangement bodies 36, 36 are simply formed in the same straight line extending vertically. In addition, it can be surely connected.

As shown in FIG. 11 and FIG. 14, the canker piece 2 on the right side of the left beam reinforcement 38 and the canker piece 2 on the left side of the right beam reinforcement 38 Is arranged in a cross shape at the connecting portion of the above-mentioned upper and lower pillar-shaped bar arrangement bodies 36, 36, and is made to coincide with the superposed state, and in the canker pieces 2 and 2 which coincide with the front-rear direction, By inserting one rod-shaped connecting piece 42, 42 extending in the front-rear direction, the left and right beam part bar arrangement bodies 38, 38 can be easily connected.

Moreover, the left and right reinforcing bodies A, A forming a part of the left and right beam reinforcing bars 38, 38 are simply and surely in the same straight line extending in the left-right direction. Can be connected to.

Furthermore, since a skilled worker is not required for the reinforcement work of the reinforcing body A, the labor cost can be greatly reduced and the reinforcement work time can be greatly reduced. As a result, the construction cost can be significantly reduced.

(Description of Connecting Tool) FIGS. 15 to 17 show a connecting tool 45 for connecting the reinforcing body A as the main reinforcing member and the reinforcing body A as the lateral reinforcing member. A reinforcement member A as a main reinforcement member and a reinforcement member A as a transverse reinforcement member are provided by the engagement members 46 and 47 with the material engagement piece 46 and the transverse reinforcement material engagement piece 47.
And can be integrally connected in an orthogonal state.

Moreover, as shown in FIG. 16, the main reinforcing member engaging piece 46 is formed of an elastic material in a "C" shape in plan view, so that the reinforcing member A as the main reinforcing member can be easily formed from the opening. It is designed so that it can be detachably engaged.

As shown in FIG. 17, the horizontal reinforcing member engaging piece 47 is formed of an elastic material in a "C" shape in a side view, so that the reinforcing member A as the horizontal reinforcing member can be easily formed from the opening. It is designed so that it can be detachably engaged.

(Explanation of Reinforcement Body as Second Embodiment) FIG.
8 shows a reinforcing body A as a second embodiment, the reinforcing body A is a reinforcing body main piece 1 extending in one direction, and an anchor piece integrally molded at both ends of the reinforcing body main piece 1. 2 and 2, each anchor piece 2 is formed into a male screw shape by spirally winding the cord-like body 50 around the end of the reinforcing body piece 1 and adhering it with the adhesive 4. ing.

In this way, the cord-like body 50 also functions as a restraining body for restraining the strain in which the reinforcing body piece 1 expands in the direction orthogonal to the extending direction thereof.

Therefore, when the prestress is introduced into the reinforcing body 1, the reinforcing body 1 tends to expand in the direction orthogonal to the extending direction thereof to cause distortion. By restraining the expansion by restraining it with the string-like body 50, a compressive force is applied to the end portion of the reinforcing body main piece 1 from the surroundings, and the extending direction of the reinforcing body main piece 1 and the inside from the surroundings. Two-way (two-dimensionally) pre-stress can be introduced, and a confine effect can be produced.

As a result, it is possible to improve the integrity of the end portion of the main body 1 of the reinforcing body and the cord-like body 50 wound in a spiral shape, and the end portion of the main body 1 of the reinforcing body 1 is provided with a strong male screw. Can form a body.

Then, as shown in FIG. 19, the anchor pieces 2 and 2 of the reinforcing bodies A and A formed into such a strong male screw body are
It is possible to butt them and to integrally connect them by a connecting piece 51.

Here, as the connecting piece 51, as shown in FIG. 19, for example, a steel pipe which is rust-proofed by galvanizing or the like can be used, and a spiral shape is formed on the inner peripheral surface of the connecting piece 51. While forming the concave groove 52, the cord-like body 50 is spirally wound around the end portion of the reinforcing body piece 1 at substantially the same pitch as the concave groove 52, and
It is adhered and cured by the adhesive 4.

When expanded concrete is used as the adhesive 4, chemical prestress occurs,
The integrity of the reinforcing body piece 1 and the connecting piece 51 can be further enhanced.

In this way, the connecting piece 51 is formed as a female screw body, while the anchor piece 2 of the reinforcing body main piece 1 is formed as a male screw body, and the adhesive 4 is attached to the anchor piece 2 as the male screw body. The connecting piece 51 is tightened in the applied state so that the reinforcing pieces A, A can be easily connected by the connecting piece 51.

[0094]

According to the present invention, the following effects can be obtained.

(1) The long fiber reinforced plastic reinforcement body according to the present invention according to claim 1 is one in which an adhesive agent is applied to a long fiber bundle wholly or partially, and the long fiber bundle is cured before the adhesive agent is cured. A constant tension is applied along the extension direction of the adhesive to release the constant tension after the adhesive is hardened to form a long fiber reinforced plastic reinforcement, and the long fiber reinforced plastic reinforcement is unidirectional. The reinforcing main body piece is extended, and an anchor piece integrally formed with an end portion of the reinforcing body main piece is provided.

As described above, since the long fiber reinforced plastic reinforcement is provided with the anchor piece, when the same long fiber reinforced plastic reinforcement is used as, for example, the main reinforcement, the long fiber reinforced plastic is inserted through the anchor piece. Reinforced plastic reinforcements can be easily connected to each other or to other objects.

Therefore, in the conventional bar arrangement work, by using the long fiber reinforced plastic reinforcing body according to the present invention in place of the reinforcing bar used as the main bar material, the welding work can be made unnecessary, The reinforcement work can be simplified and the reinforcement work cost can be significantly reduced, and the safety during the reinforcement work can be improved.

That is, since the long fiber bundle forming the long fiber reinforced plastic reinforcement has a tensile strength, it can be sufficiently functioned as a main reinforcing bar and is lightweight (about 40 times the weight of a mechanically equivalent reinforcing bar). 1), so
It is easy to handle, and the work of arranging can be done easily and safely.

Therefore, the bar arrangement work can be performed without requiring skill, and the bar arrangement work cost can be significantly reduced in terms of work efficiency and personnel cost.

Since the long-fiber-reinforced plastic reinforcement body does not need to be covered with a protective cap,
It is possible to omit the work of covering the cap, and from this point as well, the work of arranging can be performed easily and safely.

Moreover, although it is difficult to bundle the reinforcing bars used in the past, the long fiber reinforced plastic reinforcement can be easily bundled and made compact, and is not bulky as compared with the reinforcing bars. Since it is significantly lightweight, mass transportation can be performed easily and transportation cost can be significantly reduced.

Furthermore, since the long fiber reinforced plastic reinforcement has excellent corrosion resistance, the "fog" can be set to be significantly smaller than that of the reinforcing bar, and the cross-sectional area of the concrete structure can be reduced accordingly. can do.

Therefore, as compared with the case where the reinforcing bar is used, the durability and the earthquake resistance of the concrete structure can be improved, and the construction period and the construction cost can be shortened.

That is, when constructing a concrete structure on the wave line (a point 250 m away from the beach to the land side), assuming that the life of the structure is 100 years, the water forming the concrete is considered in terms of performance design. When the ratio of the ordinary cement to the ordinary cement (so-called water-cement ratio) is 55%, the “fog” needs to be about 25 cm. However, in the present invention, since the long fiber bundles forming the main reinforcement do not corrode, the water cement "Fogging" can be set as small as possible (for example, 2 cm to 3 cm) regardless of the ratio and the life guarantee of the structure, and the cross-sectional area of the concrete structure is designed to be greatly reduced accordingly. be able to.

As a result, the weight of the structure can be reduced in proportion to the reduction of the cross-sectional area, and the weight of the foundation and the seismic performance can be reduced in proportion to the reduction of the weight of the structure. Overall construction time and construction costs from construction to construction of the structure can be significantly reduced, and performance design that guarantees the life of the structure can be performed accurately.

Further, since the long fiber bundles forming the long fiber reinforced plastic reinforcement as the main reinforcing material do not corrode, maintenance of the concrete structure is unnecessary or can be greatly reduced.

Here, the reason why the constant tension is applied to the long fiber bundle in advance is to correct the relative looseness and displacement deformation between the long fibers, and further, the variation.

That is, an adhesive is wholly or partially applied to the long fiber bundle in a state where a constant tension is applied to the long fiber bundle in advance, and the long fiber bundle is applied to the long fiber bundle before the adhesive is cured. It is possible to apply a constant tension along the stretching direction, release the constant tension after the adhesive is cured, and introduce a prestress along the stretching direction of the long fiber bundle into the cured adhesive.

As a result, variations in the tensile strength of the long fiber bundle are reduced to increase its effective tensile strength, and
The handling property can be made good, and the mutual adhesion of the long fibers by the adhesive can be made good.

Therefore, since the adhesive does not require a high adhesive strength, an inexpensive adhesive that cures at room temperature can be used.

In particular, when a phenol resin adhesive is used as the adhesive for the long fiber reinforced plastic reinforcement, there is an advantage that the long fiber reinforced plastic reinforcement becomes nonflammable or flame retardant. Therefore, it is advantageous in terms of fire resistance for buildings and the like.

(2) In the long fiber reinforced plastic reinforcement body according to the second aspect of the present invention, the anchor piece is formed in a loop shape.

In this way, since the anchor piece integrally formed at the end of the long fiber reinforced plastic reinforcement body is formed in a loop shape, when connecting the long fiber reinforced plastic reinforcement bodies to each other, both long fiber A long fiber reinforced plastic reinforcement body that receives tensile force by aligning the loop-shaped anchor pieces integrally formed at the end of the reinforced plastic reinforcement body with each other and inserting a rod-shaped connecting piece into each of the anchor pieces. The two can be easily connected.

Further, when connecting the long fiber reinforced plastic reinforcement to another object, a locking piece capable of locking a loop-shaped anchor piece is provided on the other object so that the same can be attached to the other object. The loop-shaped anchor pieces can be easily locked and connected.

Therefore, even when the long fiber reinforced plastic reinforcement is used as the main reinforcement, the reinforcement work can be performed easily.

(3) In the long fiber reinforced plastic reinforcement body according to the present invention as set forth in claim 3, the anchor piece is formed by spirally winding a string-like body around the end portion of the reinforcement body piece and adhering it with an adhesive. Then, it is formed in a male screw shape.

In this way, since the anchor piece integrally formed at the end of the long fiber reinforced plastic reinforcement is formed in a male screw shape, when connecting the long fiber reinforced plastic reinforcements to each other, Both long-fiber reinforced plastic reinforcements are easy by making male screw-shaped anchor pieces integrally molded at the end of the fiber-reinforced plastic reinforcement into abutted state and screwing female screw bodies to both anchor pieces. Can be connected to.

When the long fiber reinforced plastic reinforcement is connected to another object, a female screw body is provided on the other thing and the anchor piece is screwed into the female screw body for connection, or An anchor piece of a long fiber reinforced plastic reinforcement can be fixed to and connected to the other by a solidifying material such as cement milk.

Therefore, even when the long fiber reinforced plastic reinforcement is used as the main reinforcement, the reinforcement work can be performed easily.

(4) A long fiber reinforced plastic reinforced net body according to a fourth aspect of the present invention comprises the long fiber reinforced plastic reinforced body according to any one of the first to third aspects as a main reinforcing material. The plurality of long-fiber-reinforced plastic reinforcements extending in the front-rear direction are arranged with a space in the left-right direction, and a plurality of flexible fibers extending in the left-right direction in these long-fiber-reinforced plastic reinforcements. The connecting bodies are arranged in a cross shape with an interval in the front-rear direction, and a plurality of long fiber reinforced plastic reinforcing bodies are connected by each connecting body to form a net shape.

In this way, in the long fiber reinforced plastic reinforced net body, the pitch between the main reinforcements was maintained at the required interval by the long fiber reinforced plastic reinforcements as the plurality of main reinforcements and the plurality of connecting bodies. Since it is formed in a net-like, so-called so-called "child-shaped" shape, for example, it is possible to lay it around the steel frame (in a wrap-around manner) while the main reinforcement extends in the up-down direction, or just stretch and stretch it as it is. The reinforcement work can be performed in a stretched state at a required location, and the reinforcement work can be completed in a short time without requiring skill.

At this time, the main reinforcements of the long fiber reinforced plastic reinforced net can be accurately formed in advance in a factory or the like with a length, a thickness, a shape and the like according to the design information, and are arranged at a pitch according to the design information. Can form part of the long fiber reinforced plastic reinforced mesh.

Moreover, in the case of a high-rise building, the work of arranging the long-fiber reinforced plastic reinforced net is easier and the construction cost is lower. And construction costs can be significantly reduced.

Here, in the long fiber reinforced plastic reinforcement as the main reinforcing material, an adhesive is wholly applied to the long fiber bundle,
Before the adhesive cures, a constant tension is applied to the long fiber bundle along its extension direction, and after the adhesive cures, a constant tension is released to prestress the tensile strength of the long fiber bundle. Can be in a state where it has been introduced.

As a result, the main reinforcing bar can sufficiently function as a reinforcing bar which opposes the tensile force, and can secure the strength of the concrete structure which is weak in the tensile force.

When the long fiber reinforced plastic reinforced net body is conveyed, since the connecting body is flexible, it is also possible to make the long fiber reinforced plastic reinforced body into a spiral shape and bundle the main reinforcing members. It is also possible to fold the fiber-reinforced plastic reinforcing member and bundle the main reinforcing members, so that the long fiber-reinforced plastic reinforcing mesh member can be efficiently transported in a large amount.

(5) In the long fiber reinforced plastic reinforced mesh body according to the present invention as set forth in claim 5, a long fiber bundle extending in the left-right direction is used as the connecting body, and the continuous body and the long fiber reinforced plastic reinforcing body are used. The intersections with and are bonded by an adhesive.

In this way, since the long fiber bundles are used for the long fiber reinforced plastic reinforcing body as the main reinforcing member and the connecting body for connecting the long fiber reinforced plastic reinforcing body, respectively, the same long fiber reinforced plastic is used. In addition to the tensile strength of concrete structures with reinforcements, corrosion resistance,
It is possible to improve durability and earthquake resistance.

[Brief description of drawings]

FIG. 1 is a front view of a long fiber reinforced plastic reinforcement body as a first embodiment according to the present invention.

FIG. 2 is an explanatory view of a process of applying an adhesive to a long fiber bundle and the same long fiber bundle.

FIG. 3 is an explanatory diagram of a manufacturing process of a reinforcing body manufactured by introducing a prestress in a two-dimensional manner.

FIG. 4 is an explanatory view of the manufacturing process of the reinforcing body.

FIG. 5 is an explanatory cross-sectional view of the reinforcing body.

FIG. 6 is an apparatus for manufacturing a reinforcing body.

FIG. 7 is a front view of a reinforcing body as a modification example.

FIG. 8 is a front view of a long fiber reinforced plastic reinforced net body.

FIG. 9 is a perspective view of a reinforcing mesh body as a first modification.

FIG. 10 is a perspective view of a reinforcing mesh body as a second modification.

FIG. 11 is a perspective view showing an application example of a reinforcing mesh body.

FIG. 12 is an explanatory view showing an application example of a reinforcing net body.

FIG. 13 is a plan view of a bar arrangement body.

FIG. 14 is a perspective explanatory view of a bar arranging body.

FIG. 15 is a front view showing a connected state of the main reinforcing members and the horizontal reinforcing members.

FIG. 16 is a plan view showing a connected state of the main reinforcing members and the horizontal reinforcing members.

FIG. 17 is a side view showing a connected state of a main reinforcing member and a horizontal reinforcing member.

FIG. 18 is a front view of a reinforcing body as a second embodiment.

FIG. 19 is a sectional front view showing a connected state of the reinforcing bodies.

[Explanation of symbols]

A long fiber reinforced plastic reinforcement 1 Reinforcement body piece 2 anchor pieces 3 long fiber bundle 4 adhesive 5 bobbins 6 adhesive tank

Claims (5)

[Claims] 1. An adhesive agent is wholly or partially applied to a long fiber bundle, and a constant tension is applied to the long fiber bundle along its extension direction before the adhesive agent is hardened to cure the adhesive agent. After that, a certain tension is released to form a long fiber reinforced plastic reinforcement, and the long fiber reinforced plastic reinforcement is integrated with the reinforcement main piece that extends in one direction and the end of the reinforcement main piece. A long-fiber-reinforced plastic reinforcement comprising a molded anchor piece. 2. The long fiber reinforced plastic reinforcement body according to claim 1, wherein the anchor piece is formed in a loop shape. 3. The anchor piece is formed in a male screw shape by spirally winding a string-like body around the end of the reinforcing body piece and adhering it with an adhesive. Long fiber reinforced plastic reinforcement. 4. A long fiber reinforced plastic reinforced net body comprising the long fiber reinforced plastic reinforcing body according to any one of claims 1 to 3 as a main reinforcing material, wherein the plurality of lengths extend in the front-rear direction. Fiber reinforced plastic reinforcements are arranged at intervals in the left-right direction, and a plurality of flexible connecting bodies extending in the left-right direction are arranged in a cross shape in the left-right direction at these long fiber-reinforced plastic reinforcements. In addition, a long fiber reinforced plastic reinforced net body characterized in that a plurality of long fiber reinforced plastic reinforced bodies are connected to each other by each connecting body to form a net shape. 5. A long fiber bundle that extends in the left-right direction is used as the connecting body, and the crossing portion between the connecting body and the long fiber reinforced plastic reinforcing body is bonded and bonded with an adhesive. Item 4. A long fiber reinforced plastic reinforced net body according to item 4.