JP2003293598A - Anchor for fixing concrete reinforcing sheet, and method for reinforcing concrete - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an anchor for fixing a concrete reinforcing sheet, which reduces the number of working steps, shortens a construction period, and ensures sufficient performance thereof, and to provide a method for reinforcing concrete. <P>SOLUTION: The anchor 5 is provided for fixing the reinforcing sheet which is stuck to a surface of a concrete member in order to reinforce the concrete member. The anchor 5 for fixing the sheet is formed of a bundle 51 of bound strands each consisting of a number of fibers having a predetermined length. Then, the strands 50, 50, etc., of the strand bundle 51 are connected together at least on one end side by deformable connection holding means 52, 52, etc., so as to form a sector having a predetermined size when the strands are uniformly expanded, to thereby form a fixing portion 53. The fixing portion 53 is expandable/contractible between a sector and a linear shape. The anchor 5 is expandable to the predetermined size only by laterally pulling both ends of the fixing portion 53 when stuck to the concrete member. <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 fixing anchor and a reinforcing method for fixing a concrete reinforcing sheet suitable for a reinforced concrete structure or a steel frame reinforced concrete structure.

[0002]

2. Description of the Related Art When repairing or reinforcing columns, beams, walls, etc. of a concrete structure, a reinforcing sheet such as a carbon fiber sheet is attached to the surface of a concrete member, and its end is bundled with many carbon fibers. Reinforcement method of fixing and fixing with fixing anchors is performed.

Conventionally, as a method of reinforcing a concrete member with such a carbon fiber, Japanese Patent Laid-Open No. 2000-2744 has been proposed.
6, JP-A-2000-45565, JP-A-11-1529
07, JP-A-11-256838 are proposed.

In these conventional methods for reinforcing a concrete member with a carbon fiber sheet, for example, as shown in FIG. 15, when reinforcing a column 11 in a column 10 with a wall made of reinforced concrete, the surface of the column 11 is axially oriented. A reinforcing sheet 12 such as a carbon fiber sheet is attached to the wall 13 and a fixing anchor 16 (see FIG.
8) Open the insertion hole 14 for attaching the.

Next, as shown in FIG. 16, a reinforcing sheet 15 such as a carbon fiber sheet extending in a direction perpendicular to the reinforcing sheet 12 attached to the pillar 11 is attached to the reinforcing sheet 12.
Next, as shown in FIG. 17, the central portion of a fixing anchor 16 made of a large number of carbon fibers manufactured by the method described below is immersed in the impregnating adhesive resin 17, and the impregnated portion is hit with a rubber spatula or the like to impregnate it. Facilitate. At one end of the fastening anchor 16, a wire 18 for pulling when attaching the fastening anchor 16 is attached.
Next, as shown in FIG. 18, the pillar 1 is attached.
The impregnating adhesive is applied to the reinforcing sheet 15 attached to No. 1, and then the central portion of the fixing anchor 16 is inserted into the insertion hole 14 of the wall 13. Then, one end of the fixing anchor 16 is cut from the vicinity of the wire 18 to remove the wire 18.

Next, as shown in FIG. 19, the reinforcing sheet 1 is provided with a large number of carbon fibers at both ends of the anchor 16 for fixing.
5 is opened in a fan shape, and the impregnated adhesive resin is applied and adhered from above.

Thereafter, the defoaming roller 19 is used to accelerate the impregnation of the reinforcing sheet 15 and the fastening anchor 16 with the impregnated adhesive resin. As a result, the fixing anchor 16 is fixed to both ends of the reinforcing sheet 15 in a fan-shaped open state, so that the reinforcing sheet 15 can be prevented from peeling off from the pillar 11 and the pillar 11 can be reinforced. . The number of fixing anchors 16 to be used, the size when the end portion of the fixing anchor 16 is opened in a fan shape, and the like are determined according to a predetermined standard. Figure 20
22 to 22 show a conventional method of manufacturing the anchor 16 for fixing. First, as shown in FIG. 20, a conventional anchoring anchor 16 has two support rods 21 and 2 at a construction site with a plate member 20 spaced at substantially the same distance as the required anchor length.
1 is fixed, and the strand 22 in which a large number of carbon fibers are bundled is wound around these support rods 21 and 21 a required number of times to form a strand bundle 23.

Next, as shown in FIG. 21, the strand bundle 23 is removed from the support rods 21 and 21, and the wire 1 is attached to one end of the strand bundle 23.
Attach 8 and cut the other end into pieces by cutting the other end with scissors. As a result, the anchor 16 for fixing is completed as shown in FIG.

[0009]

However, since the conventional anchoring anchor 16 is manufactured by winding the strands 22 in which carbon fibers are bundled around the supporting rods 23 and 23 at a construction site or the like, the anchoring anchor 16 is constructed. There is a possibility that the number of windings of the carbon fiber strand 22 may be wrong, and in this case, there is a problem in that the strength varies.

Further, in order to secure the fixing performance of the fixing anchor 16, the size when the end portion of the fixing anchor 16 is expanded in a fan shape, the linearity and the deviation of the carbon fiber in the expanded portion are determined according to a certain standard. Although it is necessary to manage the above, when the fibers at the end of the anchoring anchor 16 are manually fanned out at the construction site as in the prior art, there is a problem that the above management cannot be performed reliably. It was

Furthermore, in some cases, hundreds of anchors 16 for fixing are used at one construction site, and in such a case, a huge labor cost is required for manufacturing and attaching the anchors 16 for fixing. However, there was a problem that the construction period became longer.

An object of the present invention is to solve the above-mentioned conventional problems, and to provide an anchor and a reinforcing method for fixing a concrete reinforcing sheet capable of performance control, reduction of man-hours and construction period. To provide.

[0013]

The present invention is an anchor and a reinforcing method for fixing a concrete reinforcing sheet, which is configured as follows in order to solve the above-mentioned technical problems. That is, the present invention is a fixing anchor for fixing a reinforcing sheet attached to the surface of the concrete member to reinforce the concrete member, comprising a fiber bundle obtained by bundling a large number of fibers having a predetermined length, The large number of fibers on at least one end side of the fiber bundle, in a state of being spread substantially evenly into a fan shape of a predetermined size,
By connecting with the deformable connection holding means,
It is characterized by having a fixing portion that can be expanded and contracted from a fan shape to a linear shape.

Further, the present invention is a method for reinforcing a concrete wall member, wherein a reinforcing sheet is attached to the surface of the wall member, and an insertion hole is provided in a member arranged on the outer peripheral side of the wall member, It is characterized in that a portion excluding the fixing portion in the fixing anchor of the concrete reinforcing sheet is inserted into the insertion hole, and the fixing portion is expanded in a fan shape and adhered to the reinforcing sheet.

The present invention is also a method for reinforcing a column with a concrete wall, wherein a reinforcing sheet is attached to the surface of a wall member or a column member of the column with a concrete wall, and the reinforcing sheet is attached. An insertion hole is provided in the wall member or the column member on the other side, and a portion other than the fixing portion of the fixing anchor of the concrete reinforcing sheet is inserted into the insertion hole, and the fixing portion is expanded into a fan shape to reinforce the reinforcing member. Characterized by adhering to a sheet.

Further, the present invention is a method for reinforcing a concrete beam member arranged below a floor member, wherein a reinforcing sheet is attached to the surface of the beam member, and an insertion hole is provided in the floor member, A part of the concrete reinforcing sheet excluding the fixing part is inserted into the insertion hole, and the fixing part is spread in a fan shape and adhered to the reinforcing sheet. <Concrete Structure of the Present Invention> The anchor for fixing the concrete reinforcing sheet of the present invention comprises the above-mentioned essential constituent elements, but the constituent elements are also concretely established in the following cases.

The specific constituent elements are that the fixing portions are provided on both end sides of the fiber bundle, and hook means for pulling the fiber bundle is provided on at least one end side of the fiber bundle, Adjustment means for adjusting the size of the fan shape in the fixing portion is provided on the fiber bundle, the adjustment means is a bundling member for bundling the fiber bundle, and the bundling member is movable in the longitudinal direction of the fiber bundle. Attached to the fiber, the fiber is a carbon fiber, a glass fiber or an aramid fiber, the bond holding means is a glass fiber or a thermoplastic resin, the glass fiber or the thermoplastic resin of the fiber bundle. By fusing to the fiber,
Bonding the fibers.

According to the present invention, when the fixing anchor is attached on site, after inserting the fixing anchor except the fixing portion into the insertion holes formed in the pillar or the like, both ends of the fixing portion of the fixing anchor are inserted. By pulling in the horizontal direction and expanding to the limit, it becomes a fan shape of a predetermined size, and the linearity of each fiber constituting the fiber bundle is maintained, and each fiber is expanded substantially evenly and no bias occurs. .

Therefore, when the end portion of the fixing anchor is expanded into a fan shape as in the conventional case, the size of the fan shape is measured,
Since it is not necessary to pull each fiber in the longitudinal direction to ensure the linearity of the fiber or to work carefully so that there is no unevenness of the fiber, the installation work is very easy, and the installation work time is reduced. It is possible to reduce the number of works, shorten the construction period, and secure the performance required as a fixing anchor.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION An anchor for fixing a concrete reinforcing sheet and a reinforcing method according to the present invention will be described below in more detail with reference to the embodiments shown in the drawings. (First Embodiment) FIG. 1 is a view showing a state in which a fixing portion of a fixing anchor of a concrete reinforcing sheet according to a first embodiment of the present invention is expanded, and FIG. 2 is a concrete reinforcement according to the first embodiment of the present invention. FIG. 4 is a view showing a state in which the fixing portion of the fixing anchor of the sheet is reduced, and FIG. 3 is a view showing a state in which the wall member is reinforced by using the fixing anchor of the concrete reinforcing sheet according to the first embodiment of the present invention, FIG. FIG. 5 is a diagram showing a mounting portion of a fixing anchor of the concrete reinforcing sheet of FIG. 3, and FIG. 5 is a diagram illustrating a mounting method of the fixing anchor of the concrete reinforcing sheet of FIG.

As shown in FIG. 1, the anchoring anchor 5 for concrete reinforcement according to the first embodiment of the present invention is a one-sided anchor type, and a predetermined number of strands 50 in which a large number of carbon fibers are bundled are bundled. It is composed of a bundle of strands 51. The fibers forming the strands 50 are not limited to carbon fibers, but glass fibers, aramid fibers, or the like can be used. These fibers have flexibility,
Deformable.

On one end side of the anchor 5 for fixing, the strands 50 are spread in a fan shape of a predetermined size in a substantially uniform and even manner, and are joined by a deformable joining and holding means 52. Fixing part 53 that can be expanded and contracted to a linear shape
Is provided. On the opposite side of the fixing portion 53, a linear mounting portion 56 is formed.

As the binding and holding means 52, for example, glass fiber or thermoplastic resin can be used, and the strands 50 can be expanded and contracted by making these materials linear and heat-bonding to each strand 50. Can be combined with. The number of the bond holding means 52 is appropriately set according to the size when the strand 50 is expanded.

At the base of the fixing portion 53, the fixing portion 5
As an adjusting means for adjusting the size of the bundle 3, a bundling member 54 is attached so as to be movable in the longitudinal direction. Further, a hook portion 55 for pulling the end portion of the fixing anchor 5 when the fixing anchor 5 is attached is provided at the tip of the attachment portion 56 of the fixing anchor 5. In the present embodiment, the folded portion of each strand 50 is used as the hook portion 55.

When the fixing anchor 5 is attached to a building for fixing a reinforcing sheet, the fixing portion 53 is linearly reduced as shown in FIG. After being inserted into the insertion hole provided in, the fixing portion 53 is grasped at both ends and pulled laterally to the limit, so that it can be expanded into a fan shape having a predetermined size as shown in FIG.

FIG. 3 is a view showing a state in which the concrete wall member 71 of the building 70 is reinforced with a reinforcing sheet 72 such as carbon fiber using the single anchor type anchoring anchor 5 shown in FIG. . Here, pillar members 73 and 73 are arranged on both sides of the wall member 71, and a beam member 74 and a floor member 75 are arranged above and below the wall member 71, respectively. In addition,
The pillar members 73, 73 are also reinforced by the reinforcing sheet 72 and the fixing anchor 5.

The reinforcing sheet 72 is entirely attached to the surface of the wall member 71. A plurality of fixing anchors 5 are embedded in the pillar members 73, 73 arranged around the wall member 71, the beam member 74, and the floor member 75 near the wall member 71 at predetermined intervals.

As shown in FIG. 4, the pillar members 73, 73, the beam member 74, and the floor member 75 are provided with a large number of insertion holes 76, 76 ... Which are located near the wall member 71.
Note that FIG. 4 illustrates only the beam member 74. These insertion holes 76, 76 ... Have a predetermined diameter and depth,
They are provided at a predetermined distance from each other.

Then, the attachment portion 56 of the anchor 5 for fixing
The impregnated adhesive resin is applied to and is inserted into the insertion holes 76, 76 ... As a result, the anchor 5 for fixing becomes the pillar member 7.
It is fixed to 3,73 etc. After this, as shown in FIG.
Fixing portions 53, 53 of fixing anchors 5, 5 ...
Are spread to the maximum on the reinforcing sheet 72 in a fan shape, and the impregnated adhesive resin is applied on the expanded fixing portions 53, 53 ...
.. is fixed to the reinforcing sheet 72 by adhesion.

As a result, the outer peripheral end of the reinforcing sheet 72 attached to the wall member 71 is fixed by the fixing anchor 5, so that the reinforcing sheet 72 can be prevented from peeling off, and thus the wall member 71 can be reinforced. It can be secured for a long time.

As described above, according to the present invention, the fixing anchor 5 is provided with the fixing portion 53 capable of expanding and contracting from a fan shape having a predetermined size to a linear shape.
When attaching the fixing anchor 56 of the fixing anchor 5
After being inserted into the insertion holes 76, 76 ... Provided in the pillar members 73, 73, the beam member 74, and the floor member 75 and fixed with the impregnating adhesive resin, both ends of the fixing portion 53 of the fixing anchor 5 are grasped. Is formed into a fan shape having a predetermined size by simply expanding it to the limit in the lateral direction, and the linearity of the carbon fiber forming each of the strands 50, 50 ... Is maintained, and the strand 50 and the carbon fiber forming the strand 50 are maintained. There is no bias.

Therefore, when the anchor for fixing is attached as in the conventional case, the size after expanding the end of the anchor is measured one by one, and each fiber is pulled in the longitudinal direction in order to ensure the linearity of the carbon fiber. Since it is not necessary to work with care so that there is no bias in the carbon fibers, the work of attaching the anchor 5 for fixing becomes extremely easy, which reduces the number of work steps, shortens the construction period, and reduces the anchor 5 for fixing. Performance can be secured.

Further, as shown in FIG. 1, by merely moving the bundling member 54 of the fixing anchor 5 in the longitudinal direction of the strand bundle 51, the size of the fan shape when the fixing portion 53 is expanded is arbitrarily adjusted. Therefore, when changing the number of specifications of the anchors 5 for fixing according to the design conditions of the building 70,
Even if it is necessary to adjust the size of the fixing portion 53 after enlargement, it can be immediately dealt with by simply moving the bundling member 54. (Second Embodiment) FIG. 6 is a view showing a state in which a fixing portion of a fixing anchor of a concrete reinforcing sheet according to a second embodiment of the present invention is expanded, and FIG. 7 is a concrete reinforcement according to the second embodiment of the present invention. The figure which shows the state which reduced the fixing part of the anchor for fixing of a sheet, FIG. 8 is a figure which shows the state which reinforced the column with a wall using the anchor for fixing of the concrete reinforcement sheet which concerns on 2nd Embodiment of this invention, FIG. 9 is a view showing a mounting portion of the anchor for fixing the concrete reinforcing sheet of FIG.

As shown in FIG. 6, the anchor 6 for fixing the concrete reinforcing sheet of the second embodiment of the present invention is a double anchor type, and a predetermined number of strands 60 in which a large number of fibers, for example, carbon fibers are bundled are bundled. It is constituted by a bundle of strands 61 that are bundled together.

On the both ends of the fixing anchor 6, the strands 60, 60, ... Are expanded uniformly in a fan shape of a predetermined size without being evenly biased, and are made of, for example, glass fiber or the like which is deformable. A fixing portion 63 that can be expanded and contracted from a fan shape to a linear shape by being fused and combined by the combination holding means 62,
63 are provided.

Bundling members 64, 64 are provided at the roots of the fixing portions 63, 63 as adjusting means for adjusting the size of the fixing portions 63, 63 when they are spread in a fan shape.
Are mounted so as to be movable in the longitudinal direction.

When this fixing anchor 6 is attached to a building for fixing a reinforcing sheet, as shown in FIG. 7, the fixing portions 63, 63 are linearly reduced and the central straight portion is formed in the building. After being inserted into the insertion hole provided in, the fixing portions 63, 63 are grasped at both ends and pulled in the lateral direction to the limit, so as to expand into a fan shape having a predetermined size as shown in FIG.

The fixing portions 63, 6 of the fixing anchor 6 are
As shown by the broken line in FIG. 7, the tip of 3 has hook portions 65, 65 using the folded-back portions of the respective strands 60 in advance.
Is provided. When the fixing anchor 6 is attached to a building or the like, the fixing anchor 6 is pulled in the longitudinal direction by using the hook portions 65 and 65 to be inserted into the insertion hole of the building, and then the hook portions on both sides are formed. 65,6
5 is cut to enlarge each fixing portion 63, 63.

FIG. 8 shows a column 80 with a concrete wall using the anchors 6 for anchoring of both anchor types shown in FIG.
It is a figure which shows the state which reinforced the column member 81 of this with the reinforcement sheet 82, such as a carbon fiber sheet. Here, a predetermined number of reinforcing sheets 82 are laminated and attached to the outer peripheral side surface of the pillar member 81.

As shown in FIG. 9, the wall member 83 has an insertion hole 84, which is located near the column member 81 and has a predetermined diameter, which penetrates the wall member 83.
84 ... Are perforated at a predetermined distance from each other. The fixing anchor 6 is inserted into the insertion hole 84 in a state where the fixing portion 63 on one end side is linearly reduced so that the fixing portions 63 and 63 on both ends are exposed. At this time, the hook portion 65 at the tip of the fixing anchor 6 (FIG. 7)
For example, by attaching a wire or the like and pulling the wire in the longitudinal direction, the fixing anchor 6 can be easily inserted into the insertion hole 8
Can be inserted in 4.

After the fixing anchor 6 is inserted into the insertion hole 84, the hook portions 65, 65 at the tips are cut to remove the wire. Then, the fixing portions 63, 63 on both sides are attached to the reinforcing sheet 8
It spreads out in a fan shape on 2, 82, and a dipping adhesive resin is applied from above the fixing portions 63, 63 to adhere and fix it to the reinforcing sheet 82. (Third Embodiment) FIG. 10 is a view showing a state in which a beam member according to a third embodiment of the present invention is reinforced, and FIG. 11 is a third embodiment of the present invention.
Sectional drawing which shows the state which reinforced the beam member which concerns on embodiment using the anchor for fixing of the one anchor type concrete reinforcement sheet, FIG. 12 is the beam member which concerns on 3rd Embodiment of this invention, and reinforced the concrete of both anchor types. It is sectional drawing which shows the state reinforced with the anchor for fixing a sheet | seat.

As shown in FIG. 10, column members 92, 92 are arranged on both sides of a concrete beam member 90, and a floor member 93 is arranged above the beam member 90. Beam member 90
A predetermined number of reinforcing sheets 91 such as carbon fiber sheets are laminated and attached to the entire surface of the sheet.

When this reinforcing sheet 91 is fixed by the one-anchor type anchoring anchor 5 of FIG. 1, as shown in FIG. 11, a predetermined diameter and depth are provided near the beam member 91 of the floor member 93. The plurality of insertion holes 94, 94, ... Having the holes are bored, and the attachment portion 56 of the fixing anchor 5 is inserted into these insertion holes 94, 94.

The bottom of the insertion holes 94, 94 ...
As shown in FIG. 11, the fixing strength of the fixing anchor 5 can be increased by enlarging it from the diameter of the insertion holes 94, 94, but it does not have to be enlarged. After that, the fixing portion 53 of the fixing anchor 5 is expanded in a fan shape on the reinforcing sheet 91 and fixed by an immersion adhesive resin.

When the reinforcing sheet 91 is fixed by the anchors 6 of both anchor types, as shown in FIG. 12, the floor member 93 is provided with penetrating insertion holes 95, 95 located on both sides of the beam member 90. Pierce.

The fixing portions 63, 63 on both sides of the fixing anchor 6 are inserted into the insertion holes 95, 59 from the upper side of the floor member 93.
Is inserted and pulled out to the lower side of the floor member 93. Next, the fixing portions 63, 63 are enlarged in a fan shape on the reinforcing sheet 91, and a dipping adhesive resin is applied to the fixing sheet 91 so as to be adhesively fixed. Thereby, the outer peripheral end portion of the reinforcing sheet 91 is fixed, and the reinforcing sheet 91 can be prevented from peeling off from the beam member 90. (Fourth Embodiment) FIG. 13 is a view showing a fixing anchor 100 according to a fourth embodiment of the present invention. This anchor 100 for fixing is formed by fan-shaped strands 101, 101.
.... Of these, a plurality, for example, three strands 101, 1
01 and 101 are upper and lower two string-like coupling holding means 102,
They are sandwiched alternately by 102.
According to this anchor 100 for fixing, the strand 10
.. can be securely held, and the attachment work of the coupling holding means 102, 102 can be facilitated. (Fifth Embodiment) FIG. 14 shows a fixing anchor 103 according to a fifth embodiment of the present invention. This anchor 103 for fixing
Is obtained by forming the strands 104, 104 ... In two layers, and inserting the string-like bond holding means 105 between the layers, and fusing the strands 104, 104. According to this fixing anchor 103, the strength can be improved.

[0047]

As described above, according to the anchoring method and the reinforcing method for a concrete reinforcing sheet according to the present invention, when the anchoring anchor is attached at a construction site or the like, the anchoring anchor is inserted into a pillar or the like. After being inserted into the hole, the fixing portion of the fixing anchor is expanded to the limit to form a fan shape having a predetermined size, and the linearity of each fiber is maintained, and the deviation of the fiber does not occur.

Therefore, when the end portion of the fixing anchor is expanded as in the conventional case, its size is measured one by one,
Since it is not necessary to pull each fiber in the longitudinal direction to ensure the linearity of the fiber or to work carefully so that there is no unevenness of the fiber, the installation work is extremely easy and the number of work steps is reduced. The work period can be shortened and the required performance of the anchor for fixing can be secured.

[Brief description of drawings]

FIG. 1 is a diagram showing a state in which a fixing portion of a fixing anchor of a concrete reinforcing sheet according to a first embodiment of the present invention is expanded into a fan shape.

FIG. 2 is a diagram showing a state in which a fixing portion of a fixing anchor of the concrete reinforcing sheet according to the first embodiment of the present invention is linearly reduced.

FIG. 3 is a diagram showing a state in which the wall member is reinforced by using the anchor for fixing the concrete reinforcing sheet according to the first embodiment of the present invention.

FIG. 4 is a view showing an attachment portion of a fixing anchor of the concrete reinforcing sheet of FIG.

5A and 5B are diagrams illustrating a method of attaching a fixing anchor of the concrete reinforcing sheet of FIG.

FIG. 6 is a diagram showing a state in which a fixing portion of a fixing anchor of a concrete reinforcing sheet according to a second embodiment of the present invention is expanded into a fan shape.

FIG. 7 is a diagram showing a state in which a fixing portion of a fixing anchor of a concrete reinforcing sheet according to a second embodiment of the present invention is linearly reduced.

FIG. 8 is a diagram showing a state in which a wall-mounted column is reinforced by using anchors for anchoring a concrete reinforcing sheet according to a second embodiment of the present invention.

9 is a view showing a mounting portion of a fixing anchor of the concrete reinforcing sheet of FIG.

FIG. 10 is a view showing a state in which a beam member according to a third embodiment of the present invention is reinforced with a reinforcing sheet.

FIG. 11 is a cross-sectional view showing a state in which the beam member according to the third embodiment of the present invention is reinforced with a fixing anchor of a single anchor type.

FIG. 12 is a cross-sectional view showing a state in which the beam member according to the third embodiment of the present invention is reinforced by using fixing anchors of both anchor types.

FIG. 13 is a sectional view showing a coupling and holding means according to a fourth embodiment of the present invention.

FIG. 14 is a sectional view showing a fixing anchor according to a fifth embodiment of the present invention.

FIG. 15 is a diagram showing a method of attaching a fixing anchor according to a conventional example.

FIG. 16 is a diagram showing a method of attaching a fixing anchor of a concrete reinforcing sheet according to a conventional example.

FIG. 17 is a diagram showing a method of attaching a fixing anchor of a concrete reinforcing sheet according to a conventional example.

FIG. 18 is a view showing a method of attaching a fixing anchor of a concrete reinforcing sheet according to a conventional example.

FIG. 19 is a view showing a method of attaching a fixing anchor of a concrete reinforcing sheet according to a conventional example.

FIG. 20 is a diagram showing a method for manufacturing an anchor for fixing a concrete reinforcing sheet according to a conventional example.

FIG. 21 is a diagram showing a method for manufacturing an anchor for fixing a concrete reinforcing sheet according to a conventional example.

FIG. 22 is a diagram showing a method of manufacturing an anchor for fixing a concrete reinforcing sheet according to a conventional example.

[Explanation of symbols]

5, 6, 100, 103 anchors for fixing concrete reinforcing sheet 51, 61, 101, 104 strands (fiber bundle) 52, 62, 102, 105 bond holding means 53, 63 fixing portion 54 bundling member (adjusting means) 55, 65 Hook part 71 Wall member 72, 82, 91 Reinforcing sheet 76, 84, 94, 95 Insert hole 81 Column member 90 Beam member

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Takahisa Kato             1-8-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi             Within Gakusanshi Co., Ltd. (72) Inventor Hideo Tsukakoshi             Shimizu Construction 1-3-2 Shibaura, Minato-ku, Tokyo             Within the corporation (72) Inventor Yasuo Jinno             Shimizu Construction 1-3-2 Shibaura, Minato-ku, Tokyo             Within the corporation (72) Inventor Tadao Fujita             Shimizu Construction 1-3-2 Shibaura, Minato-ku, Tokyo             Within the corporation (72) Inventor Junichi Ikeya             Shimizu Construction 1-3-2 Shibaura, Minato-ku, Tokyo             Within the corporation F-term (reference) 2E164 AA05 BA44                 2E176 AA01 BB28

Claims (10)

[Claims] 1. A fixing anchor for fixing a reinforcing sheet attached to the surface of a concrete member to reinforce the concrete member, which comprises a fiber bundle in which a large number of fibers having a predetermined length are bundled, The plurality of fibers on at least one end side of the bundle are expanded and contracted from a fan shape to a linear shape by being combined with a deformable combination holding means in a state where the fibers are spread substantially evenly so as to have a fan shape of a predetermined size. An anchor for anchoring a concrete reinforcing sheet, which is provided with a possible anchoring portion. 2. The fixing anchor for a concrete reinforcing sheet according to claim 1, wherein the fixing portions are provided on both end sides of the fiber bundle. 3. The anchor for fixing a concrete reinforcing sheet according to claim 1, wherein at least one end of the fiber bundle is provided with hook means for pulling the fiber bundle. 4. An anchor for fixing a concrete reinforcing sheet according to claim 1, wherein the fiber bundle is provided with an adjusting means for adjusting the size of the fan shape in the fixing portion. . 5. The adjusting means is a bundling member for bundling the fiber bundles, and the bundling member is attached so as to be movable in the longitudinal direction of the fiber bundles.
Anchor for fixing the concrete reinforcing sheet according to. 6. The anchor for fixing a concrete reinforcing sheet according to claim 1, wherein the fibers are carbon fibers, glass fibers or aramid fibers. 7. The bond holding means is glass fiber or a thermoplastic resin, and the glass fiber or the thermoplastic resin is bonded to the fibers of the fiber bundle to bond the fibers. An anchor for fixing the concrete reinforcing sheet according to any one of claims 1 to 6. 8. A method of reinforcing a concrete wall member, wherein a reinforcing sheet is attached to a surface of the wall member, an insertion hole is provided in a member arranged on an outer peripheral side of the wall member, and the insertion hole is provided. Item 8. A reinforcing method comprising inserting a portion of the anchor for anchoring of the concrete reinforcing sheet according to any one of items 1 to 7 excluding the anchoring portion, expanding the anchoring portion in a fan shape, and adhering to the reinforcing sheet. . 9. A method for reinforcing a column with a concrete wall, wherein a reinforcing sheet is attached to a surface of a wall member or a column member of the column with a concrete wall, and the reinforcing sheet is not attached. An insertion hole is provided in the wall member or the pillar member, and a portion other than the fixing portion of the fixing anchor of the concrete reinforcing sheet according to any one of claims 1 to 7 is inserted into the insertion hole, and the fixing portion is A reinforcing method comprising spreading in a fan shape and adhering to the reinforcing sheet. 10. A method of reinforcing a concrete beam member arranged below a floor member, comprising: attaching a reinforcing sheet to the surface of the beam member; providing an insertion hole in the floor member; A method for reinforcing a concrete reinforcing sheet according to any one of claims 1 to 7, wherein a portion excluding the fixing portion is inserted into the concrete reinforcing sheet, and the fixing portion is expanded in a fan shape and adhered to the reinforcing sheet.