JP2000045565A - Reinforcing structure and reinforcing construction method for concrete member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the reinforcing structure and reinforcing construction method for a concrete member, in which the execution of works can be conducted in the short term of works at a low cost and a high reinforcing effect can be obtained. SOLUTION: Reinforcing sheets C1, C2, in which the fibrous directions are directed in the mutually crossing oblique two directions, are fixed onto the surface of a wall 13. The reinforcing sheet C1 may also be fixed onto columns 10, a beam 11, a floor 12 and the wall 13. A stiffening member 17 consisting of mortar, etc., may also be disposed on the surfaces of the reinforcing sheets C1, C2 integrally for increasing the strength of the reinforcing sheets C1, C2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing structure and a reinforcing method for a flat or curved concrete member such as a wall or a floor.

[0002]

2. Description of the Related Art Conventionally, various reinforcing methods have been proposed for seismic reinforcement of existing reinforced concrete buildings. In such a construction method, the existing wall is reinforced,
Some of them increase the bearing capacity.Specifically, reinforcing units with steel braces between the columns and beams around the walls, concrete walls on the walls, and steel plates on the walls are installed. We have established.

[0003]

However, the following problems exist in the conventional concrete member reinforcing structure and reinforcing method as described above. First, all of the construction methods require large-scale construction, which leads to a longer construction period and an increase in construction cost. In addition, the construction method using a steel plate or a reinforcing unit has a problem that the material is heavy and a burden on an operator is large, and a lifting machine or the like is required, which leads to an increase in equipment cost.

[0004] Further, welding on site is required, and since the noise is loud, so-called detaching work, in which construction is performed while using a building, cannot be performed. Further, after the construction, the wall thickness becomes large and the room becomes narrow.

[0005] In addition, since the materials used for reinforcement are all heavy, it is necessary to take measures to cope with an increase in weight while reinforcing the reinforcement, and there is a problem that it cannot be said that this is an efficient reinforcement method. The present invention has been made in consideration of the above points, and provides a concrete member reinforcing structure and a reinforcing method capable of performing construction in a short period of time and at low cost and obtaining a high reinforcing effect. The task is to

[0006]

The invention according to claim 1 is
A reinforcing structure for a concrete member, wherein a reinforcing sheet having reinforcing fibers extending in a predetermined direction is fixed to a surface of the concrete member by extending the reinforcing fibers diagonally. It is characterized by having.

Since the reinforcing fibers constituting the reinforcing sheet extend in the oblique direction, the reinforcing sheet exhibits the same function as the brace.

According to a second aspect of the present invention, there is provided the reinforcing member for a concrete member according to the first aspect, wherein the anchor for fixing, which is formed by integrally bundling a plurality of reinforcing fibers in a part of the length thereof, is provided. The bundled portion is fixed to a hole formed in a concrete member or a pillar or a beam around the concrete member, and the unbundled portion is arranged along the surface of the concrete member, and the reinforcing sheet is used for fixing. The concrete anchor is fixed to the concrete member by being overlapped and joined to an unbundled portion of the anchor.

Thus, the end of the reinforcing sheet can be reliably fixed to the concrete member.

[0010] The invention according to claim 3 is the invention according to claim 1 or 2.
The reinforcing structure for a concrete member according to claim 1, wherein a stiffener for increasing the rigidity of the reinforcing sheet is integrated with the reinforcing sheet.

According to a fourth aspect of the present invention, there is provided a reinforcing sheet having reinforcing fibers extending in a predetermined direction along a surface of a flat or curved concrete member. The fibers are disposed obliquely extending, and anchors made of a plurality of reinforcing fibers, such as carbon fibers, aramid fibers, and glass fibers, are attached to holes formed in the concrete member or columns or beams around the concrete member. Let it settle,
An end of the reinforcing sheet is fixed by overlapping and joining an end of the anchor for fixing.

Thus, the reinforcing member disposed along the flat or curved concrete member such as the floor or the wall can be fixed through the fixing anchor.

According to a fifth aspect of the present invention, there is provided the reinforcing method of a concrete member according to the fourth aspect, wherein a part of a plurality of reinforcing fibers in a longitudinal direction is inserted into the hole as the anchor. By filling the hole with a curable filler, a part of the plurality of reinforcing fibers in the longitudinal direction is bundled and fixed.

Thus, it is not necessary to manufacture a fixing anchor in which a plurality of reinforcing fibers are bundled in advance.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First and second embodiments of a concrete member reinforcing structure and a reinforcing method according to the present invention will be described below with reference to FIG.

[First Embodiment] First, an example in which shear reinforcement of a wall is intended will be described. The one shown in FIG.
In this figure, reference numeral 10 denotes a column, 11 denotes a beam, 12 denotes a floor formed on the beam 11, and 13 denotes a wall (planar concrete member). ) Respectively.

As shown in FIG. 1, a reinforcing sheet C1 for shear reinforcement is provided on the wall 13 over substantially the entire surface thereof.
And C2 are stuck together. Each of these reinforcing sheets C1 and C2 is formed having a reinforcing fiber material such as carbon fiber extending in one direction (a hatched line in the drawing indicates a fiber direction of the reinforcing fiber material). ing). The reinforcing sheets C1 and C2 are provided such that their fiber directions extend in two oblique directions crossing each other. At this time, the angle θ in the fiber direction of each of the reinforcing sheets C1 and C2 may be 0 ° <θ <90 °,
It is preferable that θ ≦ 45 °.

Not only is the entire surface of the reinforcing sheet C1 directly adhered to the wall 13, but also the outer peripheral portion thereof is fixed to the pillar 10, the beam 11, and the floor 12 around the wall 13 by the fixing anchor D. .

The anchor D for fixing includes a plurality of reinforcing fibers f such as carbon fibers, for example, in a bundle portion 15 on the base end side.
And the reinforcing fibers f are not bundled at the tip end side. In each anchor D, the bundle 15 is inserted into a hole (not shown) formed in the pillar 10, the beam 11, and the floor 12, and the hole (not shown) is filled with a resin or the like. Thereby, it is fixed to the pillar 10, the beam 11, and the floor 12. The reinforcing fibers f on the distal end side of the fixing anchor D thus fixed are spread along the surface of the wall 13, respectively.
The reinforcing sheet C1 is put on the top. The fixing anchor D and the reinforcing sheet C1 are adhered by a resin.

As a result, the reinforcing sheet C1 is fixed to the pillar 10, the beam 11, the floor 12, and the wall 1 via the anchoring anchor D.
3 is fixed.

Then, on the upper surface of the reinforcing sheet C1,
A reinforcing sheet C2 having a reinforcing effect in a diagonal direction intersecting with the reinforcing sheet C2 is entirely adhered by an adhesive or the like.

Further, a stiffener 17, such as mortar, is applied or driven to a predetermined thickness on the upper surface of the reinforcing sheet C2 and integrated with the reinforcing sheet C2.

According to the above-described shear reinforcement structure of the wall 13, the reinforcement sheets C 1 and C 2 whose fiber directions are diagonally crossed with each other are fixed to the surface of the wall 13. Thereby, the reinforcing sheets C1 and C2 having the fiber directions inclined have the same function as the braces, and the shear strength and toughness of the wall 13 can be improved, and as a result, the seismic performance of the structure can be enhanced. it can. Moreover, the reinforcing sheets C1, C2 are provided only on one side of the wall 13.
However, since a sufficient effect can be obtained even if the reinforcing member is provided, the reinforcing effect can be exerted even in a place where reinforcing is conventionally difficult, such as an elevator shaft, an outer wall, a staircase, and the like.

At the same time, by using the reinforcing sheets C1 and C2 made of carbon fiber, the construction can be performed easily, and since the material is light in weight, the burden on the operator is light and a lifting machine is not required. Become. As a result, the construction period can be shortened and the cost can be reduced. Further, since the reinforcing sheets C1 and C2 are thin, it is possible to prevent the room from becoming narrow without increasing the wall thickness after construction. In addition, since the reinforcing sheets C1 and C2 are made of carbon fiber and extremely light, it is possible to minimize the increase in the weight of the structure after construction. Therefore, the reinforcing effect is not substantially reduced by the weight increase at the time of reinforcement,
The reinforcing effect can be exhibited effectively.

Further, the reinforcing sheet C1 is connected to the pillar 10, the beam 11, the floor 12, and the wall 13 via the anchor D for fixing.
It is a configuration that has been firmly established. Thereby, the reinforcing sheet C1 can be reliably fixed to the wall 13.

At the time of construction, it is only necessary to make a hole for fixing the bundle portion 15 of the fixing anchor D, and the diameter of the fixing anchor D is smaller than that of a normal anchor or the like.
Generation of noise and vibration can be suppressed to a minimum, and detached work in existing buildings and the like can be performed. Further, after the reinforcing sheets C1 and C2 are provided, no protrusion is formed on the surface thereof, and even if the finishing material is provided thereon, no extra labor is required for the construction.

In addition, in order to increase the rigidity of the reinforcing sheets C1 and C2, a stiffener 17 made of mortar or the like is integrally provided on the surface of the reinforcing sheets C1 and C2. Thereby, the effective thickness of the reinforcing sheets C1 and C2 increases. Here, the horizontal force burden due to the carbon fiber sheet is: ΔQ = (h · cos θ + L · sin) · tcf · σcf
· Cos θ. Here, L is the width of the reinforcing sheets C1 and C2, h is the height of the reinforcing sheets C1 and C2, tcf is the total thickness of the carbon fiber sheet in a certain direction, and σcf is the effective strength of the carbon fiber sheet. Thereby, if the effective thickness (total thickness) of the reinforcing sheets C1 and C2 increases due to the presence of the stiffener 17,
As a result, the effective strength (rigidity) of the reinforcing sheets C1 and C2 is increased, and the brace effect, that is, the reinforcing effect of the wall 13 can be further enhanced.

[Second Embodiment] Next, a second embodiment of a concrete member reinforcing structure and a reinforcing method according to the present invention will be described. In the first embodiment, an example in which the concrete wall is reinforced by shearing is described. In the second embodiment described below, an example in which the concrete floor is reinforced by bending is shown. In the following description, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

As shown in FIG. 2, reinforcing sheets C1 and C2 for bending and reinforcing are provided on substantially the entire lower surface of the floor (flat concrete member) 12, for example.

Each of these reinforcing sheets C1 and C2 is formed to have a reinforcing fiber material such as carbon fiber extending in one direction (the hatched lines in the figure indicate fibers of the reinforcing fiber material). Direction). And the reinforcing sheet C
1 and C2 are provided such that their fiber directions extend in two oblique directions crossing each other. At this time, the angle θ in the fiber direction of each of the reinforcing sheets C1 and C2 is 0 ° <θ.
The angle may be <90 °, but preferably θ ≦ 45 °.

The entire surface of the reinforcing sheet C1 is not only directly adhered to the floor 12, but also the outer periphery thereof is fixed to the beam 11 around the floor 12 by the anchor D, and the fixing sheet D1 is fixed via the anchor D2. And is fixed on the floor 12.

In the anchor D for fixing, the bundle 15 is
1 is fixed by being inserted into a hole (not shown) formed in 1 and further filled with an adhesive or the like in the hole (not shown). The fixing anchor D2 is fixed to the floor 12 by inserting the bundle 15 into a hole formed in the floor 12 and filling the hole with an adhesive or the like. Fixing anchors D, D2 fixed in this way
The reinforcing fibers f on the front end side are spread along the floor 12, respectively, and a reinforcing sheet C1 is placed thereon and adhered with an adhesive or the like.

On the upper surface of the reinforcing sheet C1, a reinforcing sheet C2 having a reinforcing effect in a direction orthogonal to the reinforcing sheet C1 is provided.
Are entirely adhered by an adhesive or the like.

According to the bending reinforcing structure of the floor 12 as described above, the reinforcing sheet C1 can be securely fixed to the floor 12, and the reinforcing sheets C1 and C2 having the fiber directions inclined have the same function as the brace. Since it exerts, the bending strength and toughness of the floor 12 can be improved, and the same effects as those of the first embodiment can be obtained in terms of construction and the like.

In the first and second embodiments, the reinforcing sheets C1 and C2 and the fixing anchor D
About, without limiting the material to carbon fiber
Other reinforcing fibers, for example, aramid fibers, glass fibers and the like may be used.

Although the two reinforcing sheets C1 and C2 are superposed, only one sheet may be used depending on the desired reinforcing effect.
Alternatively, three or more sheets may be stacked. In addition, only the reinforcing sheet C1 is fixed by the fixing anchor D, and the reinforcing sheet C2 is bonded to the reinforcing sheet C1.
The fixing anchor D may also be used for fixing the end of the reinforcing sheet C2. Of course, these reinforcing sheets C
1, C2, the order of stacking anchoring anchors D (up and down relationship)
Is not limited at all and is arbitrary.

Further, the fixing anchor D is arranged so as to be orthogonal to the pillar 10, the beam 11, and the floor 12, but it may be arranged diagonally as shown in FIG. good. At this time, by arranging the fixing anchor D in accordance with the fiber direction of the reinforcing sheets C1 and C2, both ends of the reinforcing sheets C1 and C2 in the fiber direction can be more effectively fixed. In addition, anchor D for fixing
Is fixed on the pillar 10, the beam 11, and the floor 12,
There is no need to settle on all of them, pillars 10, beams 11,
What is necessary is just to fix to at least one of the floors 12.

In addition, if the tensile force in the fiber direction of the reinforcing sheets C1 and C2 can be transmitted to the surrounding pillars 10, beams 11, and floor 12, instead of the anchor D for fixing, an angle material or the like may be used. Reinforced sheet C with steel material such as flat bar
Alternatively, the ends of C1 and C2 may be held down and fixed to the surrounding pillars 10, beams 11 and floor 12 with metal anchors.

Further, mortar is used as the stiffener 17,
Although this is configured to be applied or cast at a predetermined thickness on the surface of the reinforcing sheet C2, the mortar may be applied or cast on the wall 13 and then the reinforcing sheets C1 and C2 may be attached thereon. . In particular, in an existing building, when the wall 13 has an existing finishing mortar layer, the reinforcing sheets C1 and C2 are bonded thereon, and the mortar layer is
It can also function as Further, instead of the mortar, for example, a concrete plate, an iron plate, or the like can be used as the stiffener 17. When the reinforcing sheets C1 and C2 are made of carbon fiber, a flexible PAN-based sheet material is generally used, and a pitch-based carbon fiber sheet having a large Young's modulus as the stiffener 17 is laminated thereon. Configurations are also possible. Of course, it is also possible to adopt a configuration in which the stiffener 17 is omitted.

In the first and second embodiments, the distal end of the anchor D is not bundled, but as shown in FIG. Cellophane 21 or the like may be wound around to prevent breakage or breakage.

Further, the fixing anchor D is provided with a bundle portion 15 at one end thereof to bundle a large number of reinforcing fibers f. The cross-sectional shape is, as shown in FIG. In addition, rectangle, triangle, oval, oval, C-shaped,
Any shape such as a cross, polygon, irregular shape, etc. may be used.

As shown in FIGS. 6A to 6D,
In order to ensure the fixing of the fixing anchor D, the bundle 1
5 may be provided with a convex portion 22 or a bump 23. Of course, the shapes and positions of the convex portions 22 and the bumps 23,
The number and the like are not limited at all. FIG.
As shown in (e), a thread portion 24 may be formed on the outer peripheral surface of the end portion of the bundle portion 15, and a nut or the like may be screwed thereto.

In addition to the above, the fixing unit D may be configured such that the bundle unit 15 is bundled with tubular or ring-shaped fasteners 50, 51, 52 as shown in FIG. is there. By using such fasteners 50, 51, 52, it is possible to increase the fixing strength of the fixing anchor D. Moreover, these fasteners 50, 51, 52 can be easily mounted. Of course, the shape of the fastener may be other than this.

Further, the anchor D for fixing may be configured such that a plurality of reinforcing fibers f are impregnated with an adhesive or a resin on site to be bundled. Further, a plurality of reinforcing fibers f may be previously bundled with a resin or the like only at an end portion thereof, and a predetermined length portion may be impregnated with the resin or the like on site. This makes it possible to flexibly set the length of the bundle 15 according to the depth of the hole for fixing the fixing anchor D.

[Further Embodiment] In addition, the following anchors can be used as fixing anchors. As shown in FIG. 8, the anchoring anchor D ″ has a plurality of reinforcing fibers f which are bent at the center in the longitudinal direction, and are formed, for example, in a hole 4 formed in the lower surface of the floor 12 or the like.
1 and the adhesive 42 filled in the hole 41
Has been established. As a result, the fixing anchor D ″ has a configuration in which the plurality of reinforcing fibers f are bundled together in the hole 41 at a part in the length direction by the adhesive 42 or the like, and is fixed to the hole 41. I have.
In the anchor D ″ for anchoring, the reinforcing fibers f extending from the holes 41 are expanded, for example, along the side surfaces of the beam 11,
The reinforcing sheets C1 and C2 are adhered thereon.

In order to perform construction using such anchors D "for fixing, holes 41 are first drilled at predetermined positions on the lower surface of the floor 12 as shown in FIG. 9B, an adhesive 42 is injected into the holes 41. Subsequently, as shown in FIG.
Is held at a middle portion in the longitudinal direction by a rod 44 having a V-shaped tip, for example, and is pushed into the hole 41 as shown in FIG. 9D. Next, when only the rod 44 is pulled out, as shown in FIG. 9 (e), the pushed-in reinforcing fiber f is fixed to the hole 41 in the longitudinal direction by hardening of the adhesive 42 in the hole 41. As a result, the fixing anchor D ″ is fixed in the hole 41. Thereafter, as shown in FIG. 8, the fixed fixing anchor D ″ is spread along the side surface of the beam 11, and The construction is completed by sequentially bonding the reinforcing sheets C1 and C2 thereon.

When the fixing anchor D ″ having such a configuration is used, as shown in the first or second embodiment, it is necessary to previously manufacture a fixing anchor formed by bundling a plurality of reinforcing fibers. Therefore, not only can the cost be reduced, but also the number and length of the reinforcing fibers can be easily changed at the site as appropriate, thereby further simplifying the construction. Becomes possible.

In order to perform a pull-out test of the fixing anchors D, D ″ fixed as described above, FIG.
As shown in FIG. 0 (a), the anchors D, D "for fixing are inserted into the holes H formed in the concrete Z, and a resin J or the like used for fixing the anchors D, D" is injected therein. Then, as shown in FIG.
D ″ is passed through a pipe P set on the surface of the concrete Z, and expansive cement or the like is injected into the pipe P to integrate the anchors D, D ″ for anchoring with the pipe P. Then, the reaction table B is set on the concrete Z, and a jack X such as a center hole type is set on the reaction table B. And
A nut N is screwed into a threaded portion formed at the tip of the pipe P. In this state, the jack X is extended by the drive source G, and a pull-out test of the anchors D, D ″ is performed.
In this way, a pull-out test can be performed without damaging the anchors D, D ″ themselves.

Further, the concrete member to which the concrete member reinforcing structure and the reinforcing method according to the present invention is applied is not limited to a floor or a wall, and it does not matter whether the member is new or existing. For example, it can be applied to concrete moldings such as culverts, and in addition, it can be applied to curved concrete members such as the inner surface of a tunnel, thereby preventing the occurrence of cracks. Becomes possible.

Other than this, any configuration may be adopted as long as it does not deviate from the gist of the present invention, and it is needless to say that the above-described configurations may be appropriately selectively combined. No.

[0051]

As described above, according to the concrete member reinforcing structure according to the first aspect, the reinforcing sheet has a structure in which the reinforcing fibers extend obliquely and are fixed to the surface of the concrete member. ing. By extending the reinforcing fibers constituting the reinforcing sheet in the oblique direction in this manner, the reinforcing sheet exhibits the same function as a brace, such as a floor or a wall, for a flat or curved concrete member against shearing or bending. Strength and toughness can be improved, and seismic performance of the building can be enhanced. Moreover, since a sufficient effect can be obtained even if the reinforcing sheet is provided only on one side of the concrete member, for example, the elevator shaft, the outer wall,
The reinforcement effect can be exerted even in a place where reinforcement was conventionally difficult, such as a staircase. At the same time, by using the reinforcing sheet, the construction can be easily performed, and since the material is lightweight, the burden on the operator is light, and a lifting machine is not required. As a result, the construction period can be shortened and the cost can be reduced. Further, since the reinforcing sheet is thin, it is possible to prevent the room from becoming narrow without increasing the wall thickness after construction. In addition, since the reinforcing sheet is lightweight, the increase in the weight of the building after construction can be minimized, and the reinforcing effect can be exhibited effectively.

According to the reinforcing structure for a concrete member according to the second aspect, the reinforcing sheet is fixed to the concrete member via a fixing anchor in which a plurality of reinforcing fibers are partially bundled. In this manner, by fixing the reinforcing sheet to the concrete member via the fixing anchor made of the same type of reinforcing fiber, the end of the reinforcing sheet can be reliably fixed to the concrete member, and the end of the reinforcing sheet can be fixed. It is possible to prevent the occurrence of peeling of the portion. In addition, even during the installation, it is only necessary to form a hole for fixing the bundled portion of the anchor for anchoring, and the hole needs to be smaller in diameter than an ordinary steel anchor, so that noise and vibration are generated. Can be minimized, and it is also possible to remove houses in existing buildings and the like. Furthermore, since no protrusions are formed on the surface after the reinforcing sheet is provided, no extra work is required for the finishing material.

According to the concrete member reinforcing structure of the third aspect, a stiffener for increasing the rigidity of the reinforcing sheet is integrated with the reinforcing sheet. In this way, by integrating the reinforcing sheet with a stiffener reinforcing sheet such as a mortar, a concrete plate, or an iron plate, the rigidity of the reinforcing sheet is improved, and the effect of reinforcing the wall is thereby enhanced.

According to the concrete member reinforcing method according to the fourth aspect, the reinforcing sheet is disposed along the surface of the flat or curved concrete member with the reinforcing fibers extending obliquely. The fixing is performed by overlapping and joining the end of the fixing anchor to the end of the fixing anchor. Thereby, the reinforcing member disposed along the concrete member can be fixed via the anchor for fixing, and the reinforcing structure of the concrete member according to claim 1 can be realized, and the end of the reinforcing member peels off. It is possible to reliably prevent the concrete member from exerting a shearing or bending effect by preventing the occurrence of such a phenomenon. Also, when performing the installation, it is only necessary to form holes for fixing the bundled parts of the anchors for anchoring, and since the diameter of the holes is smaller than that of ordinary steel anchors, noise and vibration are generated. Can be minimized, and application to existing buildings and the like can be easily performed. Furthermore, since no protrusion is generated on the surface after the reinforcing member is provided, no extra labor is required for the finishing material.

According to the concrete member reinforcing method according to the fifth aspect, as a fixing anchor, a plurality of reinforcing fibers are inserted into the hole, and the hardening filler is filled into the hole.
The structure is such that a part of the plurality of reinforcing fibers in the length direction is bundled and fixed. Accordingly, it is not necessary to manufacture a fixing anchor in which a plurality of reinforcing fibers are bundled in advance, and it is possible not only to reduce the cost, but also to appropriately change the number and length of the reinforcing fibers on site. Can be easily performed, and the construction can be further simplified.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view showing an example of a concrete member reinforcing structure and a reinforcing method according to the present invention.

FIG. 2 is a bottom view showing a concrete member reinforcing structure and a reinforcing method according to a second embodiment of the present invention.

FIG. 3 is an elevational sectional view showing another example of a concrete member reinforcing structure and a reinforcing method according to the present invention.

FIG. 4 is an external view showing another example of the fixing anchor.

FIG. 5 is a diagram showing an example of a cross-sectional shape of an identification wearing anchor.

FIG. 6 is an external view showing another example of the bundle portion of the identification wearing anchor.

FIG. 7 is an external view showing still another example of the bundle portion of the identification wearing anchor.

FIG. 8 is a side sectional view showing still another embodiment of the concrete member reinforcing structure and the reinforcing method according to the present invention.

FIG. 9 is a diagram showing a procedure when fixing the fixing anchor.

FIG. 10 is a diagram showing a pull-out test method for the identified wearing anchor.

[Explanation of symbols]

 Reference Signs List 10 pillar 11 beam 12 floor (planar concrete member) 13 wall (planar concrete member) 17 stiffener 41 hole C1, C2 reinforcing sheet D, D "anchor for anchoring f reinforcing fiber

Claims (5)

[Claims] 1. A reinforcing structure for a concrete member,
A reinforcing sheet comprising a reinforcing sheet having reinforcing fibers extending in a predetermined direction, the reinforcing sheet being fixed to a surface of the concrete member by extending the reinforcing fibers diagonally. Reinforcement structure. 2. The reinforcing structure for a concrete member according to claim 1, wherein a fixing anchor comprising a plurality of reinforcing fibers integrally bundled in a part of a length direction thereof, wherein the bundled portion is a concrete member. Alternatively, the fixing sheet is fixed to holes formed in pillars and beams around the fixing member, and the unbundled portion is disposed along the surface of the concrete member. The reinforcing sheet is not bundled with the anchor for fixing. A reinforcing structure for a concrete member, wherein the structure is fixed to the concrete member by being overlapped and joined to a portion. 3. The concrete member reinforcing structure according to claim 1, wherein a stiffener for increasing the rigidity of the reinforcing sheet is integrated with the reinforcing sheet. Reinforcement structure. 4. A reinforcing sheet having reinforcing fibers extending in a predetermined direction along a surface of a flat or curved concrete member, and extending the reinforcing fibers obliquely. And fixing anchors made of a plurality of reinforcing fibers such as carbon fiber, aramid fiber, glass fiber, etc., into the holes formed in the concrete member or the columns and beams around the concrete member, and the reinforcing sheet A method of reinforcing a concrete member, wherein the fixing is performed by overlapping and joining the end of the fixing anchor to the end of the fixing anchor. 5. The method for reinforcing a concrete member according to claim 4, wherein a part of a plurality of reinforcing fibers in a longitudinal direction is inserted into the hole as the anchor for fixing, and the anchoring property is set in the hole. A method for reinforcing a concrete member, wherein a plurality of reinforcing fibers are bundled and fixed in a longitudinal direction by filling a filler.