JP4463657B2 - Anchor for anchoring - Google Patents

Description

The present invention is, for example, relates columns, beams, the end surface of the reinforcing fiber sheet affixed to a to reinforce the concrete structure, such as digits fixing anchor for fixing to the concrete structure.

  Conventionally, a continuous reinforcing fiber sheet is wound around a concrete structure such as a column, a beam, or a girder to be reinforced. However, depending on the structure of the pillars, beams, and girders, the reinforcing fiber sheet may not be wrapped around the entire surface of the concrete structure.

9 and 10 show a reinforcing mode in which the reinforcing fiber sheet 200 is stuck to the concrete pillar 100 to reinforce it. As shown in the figure, sleeve walls 101 and 101 are integrally provided adjacent to the pillar 100. In such a case, the reinforcing fiber sheet 200 cannot be wrapped around the entire circumference of the column 100 and pasted. Therefore, in FIG. 9 and FIG. 10 , the reinforcing fiber sheet 200 is inevitably divided and attached to the left outer peripheral surface and the right outer peripheral surface of the column with the sleeve wall 101 as a boundary.

In such a case, conventionally, through-holes 102 are provided in the sleeve walls 101 and 101 in the vicinity of the pillar 100, and a large number of continuous fibers that are longer than the length of the through-holes 102 are provided in the through-holes 102. The so-called fixing anchor 1A produced using a bundled fiber bundle member is passed through, and both end portions 1b of the central portion 1a located in the through hole 102 are fan-shaped and spread, and the left side of the column A method has been proposed in which a continuous reinforcing fiber sheet 200 is bonded to a reinforcing fiber sheet 200 that is divided and bonded to an outer peripheral surface and a right outer peripheral surface, and the divided continuous reinforcing fiber sheet 200 is connected (for example, see Patent Document 1). . Typically, the fixing anchor 1A includes 10 affixed to the continuous reinforcing fiber sheet 200 at predetermined intervals S.

Further, as shown in FIG. 11 , a fixing hole 102 is formed in the concrete structure 100, and one end portion 1a of the fixing anchor 1A is inserted into the fixing hole 102 and fixed with resin, and the other end portion 1b. Is spread in a circular shape on the upper surface of the concrete structure 100 and fixed with a resin, and a reinforcing fiber sheet 200 for reinforcement is bonded thereto, or a reinforcing fiber sheet previously bonded to the upper surface of the concrete structure 100 On 200, it expands in a circular shape and is fixed with resin.

  However, when the above-described conventional reinforcing method is applied, the anchor 1A for fixing is manufactured at the construction site by the operator determining the required number of fiber bundles and using the fiber bundles. There is a possibility of mistakes.

  Further, in order for the fixing anchor 1A to exhibit strength as a fixing anchor by the above-described reinforcing method, each fiber constituting the fixing anchor 1A needs to maintain its linearity. However, since the bundle of anchors 1A for fixing is not restrained so that the linearity of the fibers itself is maintained, when the anchors for fixing are impregnated with resin, the fibers are fluctuated, and a predetermined fixing is performed. There is a possibility that strength is not expressed. Also, its quality greatly depends on the skill of the installer.

  As the fixing anchor 1A, in addition to the above configuration, as described in Patent Document 2, a sheet material in which continuous fibers are aligned in one direction is used, and a portion embedded in a through hole of the sheet material is bundled In other words, the two ends exposed from the through holes are fanned out and bonded with resin. However, the anchor for fixing described in Patent Document 2 has a problem in that when the portions to be inserted into the through holes are bundled, the other portions become wrinkles, so that the fixing anchor sheet cannot be well fixed.

  Further, in Patent Documents 3 and 4, a continuous strand is formed by bundling a large number of continuous fibers and restraining the outer periphery with a bundling member to prevent the separation, and these individual strands are arranged in a predetermined shape. The anchor for fixing is described in which the shape of the anchor is sewn with a sewing machine or the like, or a mesh-like member having adhesiveness is stuck on the surface thereof.

  However, the fixing anchors described in Patent Documents 3 and 4 require a dedicated die for arranging the strands in a predetermined shape and do not expand or contract in the width direction. The shape cannot be changed when pasting. In addition, the shape cannot be changed according to the depth of the hole to be embedded. In addition, when sewing with a sewing machine or the like, problems such as damage to the strands by the needles and breakage of the fiber bundles occur.

In Patent Document 5, one end side of a fiber bundle obtained by bundling a large number of fibers of a predetermined length is bundled by a bundling member, and the large number of fibers at the tip thereof can be expanded and contracted in a state of spreading into a fan shape of a predetermined size. The anchor for anchoring having the structure coupled by the coupling holding means is described. However, the portion of each fiber bundle that is not held by the bonding holding means is not stable in its form, it is difficult to maintain its linearity, and when the fixing anchor is impregnated with resin, There is a possibility that fluctuation occurs in the fiber and the predetermined fixing strength is not expressed. Also, its quality greatly depends on the skill of the installer.
JP-A-11-152931 JP-A-11-152907 Japanese Patent Laid-Open No. 2004-27728 JP 2003-336401 A JP 2003-293598 A

Accordingly, a main object of the present invention is to provide a fixing anchor using a continuous fiber reinforcing member that is stable in form and excellent in handleability and workability.

Another object of the present invention is to provide a fixing anchor using a continuous fiber reinforcing member having a uniform quality and high quality, which can be continuously produced by a knitting machine.

Another object of the present invention is to provide an anchor for anchoring using a continuous fiber reinforcing member in which the number of continuous strands constituting the continuous fiber reinforcing member is always constant and the number of continuous strands is not mistaken at the construction site. It is.

Another object of the present invention is that it can be easily stretched or shrunk in the width direction at the time of use, and is adapted to the shape of the place to be attached (for example, the depth of the fixing hole, the width of the fixing fan, etc.) Fixing using a continuous fiber reinforced member that can be easily deformed at the construction site, does not become wrinkled near the shrunken part, significantly improves work efficiency, and does not cause strength reduction Is to provide an anchor.

Another object of the present invention is that the individual continuous strands are constrained by a knitted structure, and if necessary, the shape of the continuous strands is also retained by using an insertion thread, so that the fibers can be shaken when the resin is impregnated. It is an object of the present invention to provide a fixing anchor using a continuous fiber reinforcing member that does not cause a decrease in strength.

The above object is achieved by a fixing anchor using the continuous fiber reinforcing member according to the present invention. In summary , according to the first aspect of the present invention, there is provided a fixing anchor having a fan-shaped or trumpet-shaped widened portion at one end portion or both end portions, and a narrow or small-diameter portion at the other portion. Because
The continuous fiber reinforced member is cut into a predetermined length, and the expanded portion is formed at least one end portion in a fan shape or trumpet shape, other portions, the narrow or small diameter portion by reducing the width or diameter In the anchor for fixing,
The continuous fiber reinforcing member is
20 to 200 continuous fiber strands arranged in parallel only in one direction, each continuous fiber strand formed by bundling a number of continuous reinforcing fibers in one direction; A flat band or cylindrical knitting structure formed by a plurality of longitudinal knitting structures produced by knitting while forming a chain stitch continuously in the longitudinal direction in a loop shape,
Each continuous fiber strand is inserted through the chain stitch of the knitted structure continuously knitted in the longitudinal direction in the knitted structure, and inserted transversely to the longitudinal knitted structure By binding the knitting structures adjacent to each other with the inserted yarns, the continuous fiber strands inserted into the longitudinal knitting structure are separated from each other by 0.1 to 20 mm. In this way, it is shaped like a flat band or a cylinder,
An anchor for anchoring is provided.

According to an embodiment of the present invention, the insertion yarn is knitted while being shaken with respect to the knitted structure every certain course.

According to another embodiment of the present invention, the continuous strand has a cross-sectional area of 0.1 to ⁵ mm ² .

  According to another embodiment of the present invention, each continuous strand is formed by laminating a plurality of fiber bundles formed by bundling a large number of continuous reinforcing fibers in one direction.

According to another embodiment of the present invention, when the continuous fiber reinforcing member has a flat band shape, the width is a constant value within a range of 10 to 500 mm, and the continuous fiber reinforcing member has a cylindrical shape. Is a constant value in the range of 3 to 500 mm in diameter.

According to a second aspect of the present invention, there is provided a fixing anchor having a fan-shaped or trumpet-shaped widened portion at one end portion or both end portions, and a narrow or narrow diameter portion at the other portion,
The continuous fiber reinforcing member is cut to a predetermined length, and at least one end is formed into a fan shape or a trumpet shape to form the expanded portion, and the other portions are reduced in width or diameter to reduce the width or diameter. In the anchor for fixing,
The continuous fiber reinforcing member is
20 to 200 continuous fiber strands arranged in parallel only in one direction, each continuous fiber strand formed by bundling a number of continuous reinforcing fibers in one direction; A flat or cylindrical knitting structure formed by a plurality of longitudinal knitting structures produced by knitting a constraining yarn in a loop shape while continuously forming a chain stitch in the longitudinal direction;
Each continuous fiber strand is inserted through the chain stitch of the knitted structure continuously knitted in the longitudinal direction in the knitted structure, and inserted transversely to the longitudinal knitted structure By binding the knitting structures adjacent to each other with the inserted yarns, the continuous fiber strands inserted into the longitudinal knitting structure are separated from each other by 0.1 to 20 mm. In this way, it is shaped like a plane or a cylinder, and
The continuous fiber reinforcing member is
A narrow portion having a predetermined length and a width and a wide portion which is located between the narrow portions and has a predetermined length and has a maximum width at the central portion are alternately formed. Produced into a long planar shape or cylindrical shape, and cut at the position of the maximum width of the wide portion,
An anchor for anchoring is provided. According to an embodiment of the present invention, the insertion yarn is knitted while being shaken with respect to the knitted structure every certain course. According to another embodiment, the continuous fiber strand has a cross-sectional area of 0.1-5 mm ² . According to another embodiment, each continuous fiber strand is formed by laminating a plurality of fiber bundles formed by bundling a large number of continuous reinforcing fibers in one direction. According to another embodiment, when the continuous fiber reinforcing member is planar, the width is 10 to 500 mm, and when the continuous fiber reinforcing member is cylindrical, the diameter is 3 to 500 mm. Is done.
According to one embodiment of the present invention, fibers constituting the continuous strands, carbon fibers or glass fibers; boron fibers, titanium fibers, metal fibers such as steel fibers; aramid, PBO (polyparaphenylene benzobisoxazole) Organic fibers such as polyamide, polyarylate, and polyester are used alone or in a mixture of plural kinds.

  According to another embodiment of the present invention, the constraining yarn and the insertion yarn are organic fibers such as polyester fibers, polyamide fibers, polyacrylonitrile fibers, polyvinyl alcohol fibers, polyolefin fibers, aramid fibers, etc .; titanium fibers , A fiber produced by mixing a metal fiber such as a steel fiber; an inorganic fiber such as a carbon fiber or a glass fiber;

The anchor for anchoring using the continuous fiber reinforcing member of the present invention is
(1) Since it is a knitted structure, the form is stable and it is excellent in handling and workability.
(2) Continuous production by a knitting machine is possible, and high quality products with uniform quality can be produced.
(3) Since the number of continuous strands constituting the continuous fiber reinforcing member is always constant, the number of continuous strands is not mistaken at the construction site.
(4) In use, it can be easily stretched or shrunk in the width direction, and easily at the construction site according to the shape of the location (for example, fixing hole depth, fixing fan width, etc.) It can be deformed, and the vicinity of the contracted portion does not become wrinkles, so that the working efficiency is remarkably improved and the strength is not lowered.
(5) The individual continuous strands are constrained by a knitted structure, and the shape is retained by using an insertion yarn as necessary. Therefore, when the resin is impregnated, the fibers sway and the strength is lowered. There is nothing.

Hereinafter, the anchor for fixing using the continuous fiber reinforcing member according to the present invention will be described in more detail with reference to the drawings.

Example 1
1 (a) and 1 (b) show an embodiment of a continuous fiber reinforcing member used in the present invention. In this embodiment, the continuous fiber reinforcing member 1 is a planar, that is, a sheet-like reinforcing sheet, and FIG. 1A shows the planar continuous fiber reinforcing member 1 viewed from one side (table). FIG. 1B is a view of the continuous fiber reinforcing member 1 viewed from the other side (back).

  According to the present embodiment, the continuous fiber reinforcing member 1 is formed into a planar shape, that is, a sheet shape, by arranging a predetermined number of flexible continuous strands 2 in parallel in one direction, for example, 20 to 200. The As shown in FIG. 3, each continuous strand 2 is formed by bundling a large number of continuous reinforcing fibers f in one direction.

  The continuous fiber reinforcing member 1 has a chain knitting portion (knitting structure) 30 produced by knitting a constraining yarn (that is, a chain knitting yarn) 3 while forming a chain stitch continuously in a loop shape in the longitudinal direction. Each continuous strand 2 will be described later in detail with reference to FIG. 2, but is arranged orthogonal to the chain stitch 3 </ b> A of the knitted structure 30.

  In the knitted structure 30 that restrains the continuous strands 2, the knitted structures 30 adjacent to each other are bound together by the insertion yarn 4. That is, the insertion yarn 4 is inserted in the transverse direction with respect to the knitted structure 30, and in this embodiment, the longitudinal direction of the continuous strand 2 with respect to the knitted structure 30 knitted to surround the adjacent continuous strands 2. A plurality of continuous strands 2 are entangled at predetermined intervals along the direction (that is, the longitudinal direction), and the plurality of continuous strands 2 are held in a planar shape, that is, in a reinforcing fiber sheet state.

  Referring to FIG. 2, a state in which the continuous strands 2 are orthogonally arranged in the knitted structure 30 in which the constraining yarn 3 is continuously knitted in a loop shape in the longitudinal direction, and the knitted structure 30 The knitting state of the insertion yarn 4 will be described.

  As shown in FIG. 2, the constraining yarn 3 is continuously knitted in a loop shape in the longitudinal direction to form a knitted structure 30, and a plurality of longitudinal knitted structures 30 form a knitted structure 30 </ b> A. The continuous strand 2 is inserted and arranged so as to penetrate the chain stitch 3A of each knitting structure 30 constituting the knitting structure 30a.

  FIG. 2 shows the continuous strand 2 bent so as to pass through the chain stitch 3A of the knitted structure 30 for easy understanding, but the continuous strand 2 is not actually bent. As shown in FIGS. 1 (a) and 1 (b), the chain stitch 3A of the knitted structure 30 knitted by the restraining yarn 3 is knitted into the continuous strand 2 arranged in a straight line.

  As shown in FIG. 2, the insertion yarn 4 is knitted into the knitting structure 30 in the lateral direction, and the adjacent knitting structures 30 are bound to each other.

  That is, according to the continuous fiber reinforcing member 1 of the present embodiment, the constraining yarn 3 is continuously knitted in the longitudinal direction and planarly formed to form the knitted structure 30A, and continuous in the longitudinal direction of the knitted structure 30A. A continuous fiber strand 2 formed by bundling a large number of continuous reinforcing fibers f in one direction is inserted into a knitted structure 30 that is knitted in a specific manner. And each continuous fiber strand 2 inserted in the longitudinal direction knitting structure | tissue 30 is shape-retained by connecting with the insertion thread 4 inserted transversely with respect to the knitting structure | tissue 30 of the longitudinal direction.

  The continuous fiber reinforcing member 1 constrained and retained by the knitting structure 30A is composed of a plurality of continuous strands 2, a constraining yarn 3 constituting a knitted structure 30, and a warp knitting machine known to those skilled in the art. By knitting the insertion yarn 4 that binds the knitted structure 30, it can be produced with high productivity and high quality. Further, since the continuous strand 2 is constrained and held by the knitting structure of the restraining yarn 3 and the insertion yarn 4, damage caused by a needle or fiber bundle breakage that occurs when the reinforcing fiber is sewn and restrained. The problem does not occur.

  That is, according to the present embodiment, since the continuous fiber reinforcing member 1 has a knitted structure, it has elasticity and has a stable form, and can be continuously produced by a knitting machine, and the quality is uniform. Can produce high quality products. Moreover, since the shape of the continuous fiber reinforcing member 1 is retained by the insertion thread 4 so as to be stretchable in the lateral direction, the width of the lateral shape can be deformed. The flexibility of the continuous fiber reinforcing member 1 can be adjusted by changing the number of times the insertion yarn 4 and the knitted structure 30 are joined.

  More specifically, as shown in FIG. 3, each continuous strand 2 is constituted by a fiber bundle F formed by converging a large number of continuous reinforcing fibers f. As the reinforcing fibers f, carbon fibers are usually used, and 3000 to 96000 carbon fibers are bundled to form a fiber bundle F, and the continuous strand 2 is formed by the fiber bundle F.

The continuous fiber strand 2 is generally formed in a substantially circular cross-sectional shape, but may be formed in a substantially rectangular cross-sectional shape having an equivalent area, and various other cross-sectional shapes as necessary. Usually, the continuous strand 2 has a cross-sectional area of 0.1 to ⁵ mm ^{2 from} the viewpoint of flexibility and resin impregnation. Here, the cross-sectional area of the continuous strand 2 means the sum of the cross-sectional areas of only the reinforcing fibers f such as carbon fibers that do not include voids.

  As described above, in the present embodiment, in the continuous fiber reinforcing member 1 having a planar shape in which the continuous strands 2 are aligned and arranged in one direction, that is, in the sheet-like continuous fiber reinforcing member 1, the continuous strands 2 are mutually void (g). = 0.1-20 mm close to each other, fixed with elasticity by the insertion thread 4, and held in a sheet state. Moreover, although the length (L) and width (W) of the continuous fiber reinforcement member 1 formed in this way are determined as appropriate, generally, the total width (W) is 10 to 500 mm due to handling problems. It is said. Moreover, although a length (L) can manufacture a thing of 100 m or more, in use, it cuts and uses it suitably.

  When it is desired to increase the fiber amount of the continuous strand 2, as shown in FIGS. 4 (a) and 4 (b), a plurality of fiber bundles F in the vertical direction or the horizontal direction, for example, two as shown in FIG. A single continuous strand 2 may be configured by laminating as described above. The number of layers is determined by the thickness of the reinforcing fibers and continuous strands used within the required width and the number of yarns. Also in this case, as described above, the continuous fiber reinforcing member 1 of the present embodiment has a knitted structure together with the restraining yarn 3 and the insertion yarn 4, and can be a uniform and high-quality product in a stable form.

  As described above, in the continuous fiber reinforcing member 1 of the present embodiment, the continuous strands 2 are individually restrained by the restraining yarns 3 forming the knitted structure 30, and the continuous strands 2 juxtaposed to each other are The shape is retained by the insertion thread 4 so as to be deformable into a predetermined shape.

  Thus, in this embodiment, the constraining yarn 3 is formed by the continuous strand 2, that is, the reinforcing fiber f swells when the resin is impregnated with the resin during the concrete repair and reinforcement, and the fiber orientation is disturbed. Prevents poor resin impregnation. In addition, the insertion thread 4 defines the distance between the continuous strands 2 and 2 constrained by the restraining thread 3, and is entangled and fixed with the restraining thread 3 so that the distance between the continuous strands 2 is not shifted and the distance between the strands does not change. Function.

  Therefore, according to the continuous fiber reinforcing member 1 of the present embodiment, the linearity of the fiber is maintained even during resin impregnation, and the fiber orientation is disturbed during resin impregnation as in the conventional continuous fiber reinforcing member or anchor for anchoring. The strength after fixing does not decrease.

  In this embodiment, as the reinforcing fiber f, in addition to the above carbon fiber, glass fiber, further metal fiber such as boron fiber, titanium fiber, steel fiber, further, aramid, PBO (polyparaphenylene benzbis). Oxazole), polyamide, polyarylate, polyester, polyethylene, and other organic fibers can be used alone or in a mixture of a plurality of organic fibers.

  The constraining yarn 3 and the insertion yarn 4 can be 15 to 1500 d (denier) multifilament yarn or monofilament yarn, for example, polyester, polyamide, polyacrylonitrile, polyvinyl alcohol and polyolefin fibers, Organic fibers such as aramid fibers, metal fibers such as titanium fibers and steel fibers, and inorganic fibers such as carbon fibers and glass fibers, or yarns made by mixing multiple types of fibers Can be used. In addition, a yarn having a configuration in which a thermoplastic organic fiber is wound or twisted around an inorganic fiber can also be used.

  The planar continuous fiber reinforcing member 1 of the present embodiment having the above configuration has a high degree of freedom due to the knitting structure of the continuous fiber reinforcing member 1 and the stretchability of the insertion yarn 4. As shown in FIG. 5 (a), the continuous fiber reinforcing member 1 can be easily contracted by compressing from both ends in the width direction, and easily by pulling both ends in the width direction outward. Can be stretched.

Accordingly, as shown in FIG. 5 (a), the long planar continuous fiber reinforcing member 1 is cut to a predetermined length (L1), for example, 20 to 60 cm, and this cutting is performed. In the one end region of the fiber reinforcing member 1A having a predetermined length (L1), as shown in FIG. 5 (b), it is contracted by compressing from both ends in the width direction so that the distance between the strands 2 and 2 is tight. The narrow width portion 1a having the width (W2) is formed, and the wide width portion (that is, the widened portion) 1b having the maximum width (W3) is adjusted by adjusting the widening width so that the other end region has a fan shape. Thus, the anchor 1A for fixing can be manufactured.

  Alternatively, as shown in FIG. 6A, the long planar continuous fiber reinforcing member 1 includes a narrow portion 1a having a predetermined length (L3) and a width (W4), and a narrow width. A long, continuous planar shape in which wide portions 1b having a predetermined length (L4) and having a maximum width (W) are alternately formed between the portions 1a and 1a. The fiber reinforcing member 1 can be obtained.

  The sheet-like continuous fiber reinforcing member of the present embodiment shown in FIG. 6A, that is, the reinforcing sheet 1 is obtained by adjusting the strength of the tension in the warp knitting machine used for sheet manufacture. It can be manufactured by knitting wide or knitting narrow.

  When the fixing anchor 1A is manufactured using such a continuous fiber reinforcing member 1, first, as shown in FIGS. 6B and 6C, first, the maximum width (W ) To produce a fixing anchor 1A having a length (L5). The fixing anchor 1A is compressed from both ends in the width direction of the member 1 so that both ends are fan-shaped with a predetermined length (L2) and the remaining portion is a narrow portion 1a.

  If a fixing anchor 1A fixed in a predetermined shape is desired, the material of the insertion thread 4 and / or the restraining thread 3 is heated using thermoplastic fibers, and the continuous strand 2, that is, The reinforcing fiber f and the insertion yarn 4 and / or the binding yarn 3 can be fused, and further, the stretchability and residual elongation of the thermoplastic fiber due to heating can be removed.

  Next, a specific example when the continuous fiber reinforcing member 1 of the present embodiment is used as a fixing anchor 1A of a reinforcing fiber reinforced sheet for a concrete beam will be described.

Example 1
In this specific example, the planar continuous fiber reinforcing member 1 having the configuration described with reference to FIG. 1 was produced as follows.

  The continuous strand 2 in the continuous fiber reinforcing member 1 was a PAN-based carbon fiber strand having an average diameter of 7 μm and a convergent number of 24,000 as the fiber f. As the binding yarn (chain stitch yarn) 3, a polyester multifilament (counter 100d) was used. Further, as the insertion yarn 4, a polyester monofilament (count 63d) was used for the front, and a polyester monofilament (count 63d) was twisted with a low melting point polyamide fiber (count 100d) for the back.

  Using these continuous strands 2, the constraining yarns 3 and the insertion yarns 4, a sheet-like continuous fiber reinforcing member having 20 continuous strands 2, that is, a reinforcing sheet 1, was produced by a knitting machine.

  In FIG. 5A, the insertion yarn 4 was knitted at a constant interval (P) of 10 mm with respect to the longitudinal direction of the continuous strand 2.

  The continuous fiber reinforcing member 1 thus produced had a width (W) of 100 mm and a length (L) of 100 m. The gap (g) between each strand was 3-4 mm.

  Next, the continuous fiber reinforcing member 1 was cut into a length (L1) of 500 mm to obtain a rectangular sheet 1A shown in FIG.

  As shown in FIG. 5B, the fiber reinforcing member 1A in the form of a rectangular sheet can be easily shrunk by compressing both ends in the width direction, and the narrow width portion 1a can be formed. It was. Further, one end (or both ends) of the narrow width portion 1a can be formed into a fan shape by pulling both ends in the width direction outward while adjusting, and has a predetermined length (L2). The fan-shaped portion 1b could be formed. In this molding operation, the linearity of the continuous strand 2 was not disturbed.

  Using the fixing anchor 1A having fan-shaped ends produced as described above, the reinforcing fiber-reinforced sheets bonded to the concrete beams were joined and fixed.

According to this example,
(1) Since the number of continuous strands 2 constituting the continuous fiber reinforcing member 1 is always constant, as a matter of course, the number of continuous strands is not mistaken at the construction site.
(2) When forming the continuous fiber reinforcing member 1 for use as the anchor 1A for fixing, it can be easily extended or contracted in the width direction, and the shape of the place to be attached (for example, a fixing fan shape) It could be easily deformed at the construction site according to the width. In addition, the vicinity of the contracted portion did not become wrinkles, and the workability was good. Furthermore, the strength did not decrease.
(3) The individual continuous strands 2 are restrained by the knitting structure 30 of the restraining yarn 3, and the shape is retained by the insertion yarn 4, so that when the resin is impregnated, the fibers shake and the strength is reduced. I did not wake up.

Example 2
FIG. 7 shows another embodiment of a continuous fiber reinforcing member having a flat shape used in the present invention , that is, a reinforcing sheet 1.

  In the reinforcing sheet 1 of the present embodiment, as in the first embodiment, each continuous strand 2 is orthogonal to the chain stitch 3A of the knitted structure 30 in which the constraining yarn 3 is continuously knitted in the longitudinal direction in a loop shape. Are arranged.

  However, according to the present embodiment, the insertion yarn 4 inserted in the transverse direction with respect to the longitudinal knitting structure 30 is knitted while being shaken for each constant course with respect to the knitting structure 30 that restrains each continuous strand 2. ing.

  That is, in this embodiment, as in the first embodiment, as shown in FIG. 7, the constraining yarn 3 has a chain stitch for each course so that each continuous strand 2 passes through the chain stitch 3A orthogonally. The knitted structure 30 is formed while forming 3A. Thereby, each continuous strand 2 is restrained.

  According to this embodiment, the insertion yarn 4 is an insertion yarn in the lateral direction. In this embodiment, the insertion yarn 4 is inserted in a meandering manner while flying by one wal and hanging on the restraining yarn 3 constituting the knitted structure 30. Thereby, the continuous fiber reinforcement member 1 which has the continuous strand 2 restrained by the knitting structure | tissue 30 is shape-retained in a sheet form.

  Also in the second embodiment, the continuous fiber reinforcing member 1 having a planar shape is compressed from both ends in the width direction of the continuous fiber reinforcing member 1, as shown in FIGS. Therefore, it can be easily shrunk, and can be easily stretched by pulling both ends in the width direction outward.

  Similarly to Example 1, the continuous fiber reinforcing member 1 of this example can also be produced using a warp knitting machine, and the same effects as those of Example 1 can be achieved.

  Therefore, also in this embodiment, by adjusting the strength of the tension by the warp knitting machine, as shown in FIG. 6, it is also possible to knitting the sheet 1 wide or knitting narrowly. is there.

Example 3
Figure 8 (a), (b) , (c), the showing another embodiment of a continuous fiber-reinforced member 1 of the present invention.

In Examples 1 and 2 , the continuous fiber reinforcing member 1 used in the present invention is arranged by aligning a predetermined number of flexible continuous strands 2 in parallel in one direction, and restraining each continuous strand 2 with a restraining yarn 3. In the above description , the insertion thread 4 is also used to hold the plurality of continuous strands 2 in a planar shape, that is, in a sheet shape.

Also in the present embodiment, as in the first and second embodiments, the continuous fiber reinforcing member 1 is arranged by aligning a predetermined number of continuous strands 2 having flexibility in one direction in parallel. By using the insertion thread 4, the plurality of continuous strands 2 are held in a cylindrical shape.

Also in the present example, except that the continuous fiber reinforcing member 1 has a cylindrical shape, it has the same configuration as in Examples 1 and 2, and can be manufactured using the same warp knitting machine. Therefore, the continuous description of the continuous strand 2, the constraining yarn 3, the insertion yarn 4, and the manufacturing method of the cylindrical continuous fiber reinforcing member 1 constituting the continuous reinforcing member will be omitted, and the description of Examples 1 and 2 will be omitted. Is used.

  The continuous fiber reinforcing member 1 has a diameter (D) of 3 to 500 mm.

Also in this embodiment, by adjusting the intensity of the tension of each warp knitting machine, as shown in FIG. 8, or broadly organize diameter of the continuous fiber-reinforced member 1, it is possible or narrowing knitting.

The continuous fiber reinforcing member 1 of the present embodiment can also achieve the same effects as the continuous fiber reinforcing member 1 of the first and second embodiments.

Also, in this embodiment, FIG. 8 (b), the (c), the continuous fiber-reinforced member 1 is cut at (L1) into a predetermined size, at least one end portion in a fan shape or trumpet shape The fixing anchor 1A, which is formed into a fan-shaped portion and the other portions are reduced in diameter to be a small-diameter portion, can be suitably produced. This fixing anchor 1A can also achieve the same effects as the fixing anchor 1A described in the first embodiment.

It is a schematic block diagram which shows one Example of the continuous fiber reinforcement member used for this invention. It is explanatory drawing for demonstrating one Example of the organization of the continuous fiber reinforcement member used for this invention. It is a schematic block diagram of the continuous strand which comprises the continuous fiber reinforcement member used for this invention. It is a schematic block diagram explaining the other Example of a continuous strand. It is explanatory drawing for demonstrating the preparation method when using the continuous fiber reinforcement member used for this invention as an anchor for fixing. It is explanatory drawing for demonstrating the production method in the case of using other examples of the continuous fiber reinforcement member used for this invention, and the continuous fiber reinforcement member of this Example as a fixing anchor. The continuous fiber reinforcement member according to another embodiment for use in the present invention is a schematic diagram showing. It is explanatory drawing for demonstrating the production method in the case of using other examples of the continuous fiber reinforcement member used for this invention, and the continuous fiber reinforcement member of this Example as a fixing anchor. It is sectional drawing for demonstrating the reinforcement method of the conventional concrete structure, and the anchor for fixing used in that case. It is a perspective view for demonstrating the anchoring anchor of the example of the reinforcement method of the conventional concrete structure, and the example used in that case. It is a perspective view for demonstrating the anchor for fixation of the other example used in the case of reinforcement of the conventional concrete structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Continuous fiber reinforcement member 1A Anchor for fixation 2 Continuous strand 3, 3a, 3b Restraint yarn 3A Chain stitch 4 Insert yarn 30, 30a-30d Knitting structure 30A Knitting structure

Claims (12)

A fixing anchor having a fan-shaped or trumpet-shaped widened portion at one end or both ends, and a narrow or narrow portion at the other portion,
The continuous fiber reinforced member is cut into a predetermined length, and the expanded portion is formed at least one end portion in a fan shape or trumpet shape, other portions, the narrow or small diameter portion by reducing the width or diameter In the anchor for fixing,
The continuous fiber reinforcing member is
20 to 200 continuous fiber strands arranged in parallel only in one direction, each continuous fiber strand formed by bundling a number of continuous reinforcing fibers in one direction; A flat band or cylindrical knitting structure formed by a plurality of longitudinal knitting structures produced by knitting while forming a chain stitch continuously in the longitudinal direction in a loop shape,
Each continuous fiber strand is inserted through the chain stitch of the knitted structure continuously knitted in the longitudinal direction in the knitted structure, and inserted transversely to the longitudinal knitted structure By binding the knitting structures adjacent to each other with the inserted yarns, the continuous fiber strands inserted into the longitudinal knitting structure are separated from each other by 0.1 to 20 mm. In this way, it is shaped like a flat band or a cylinder,
An anchor for fixing characterized by the above.   The anchor for anchoring according to claim 1, wherein the insertion yarn is knitted by shaking with respect to the knitted structure every predetermined course. The anchor for fixing according to claim 1, wherein the continuous fiber strand has a cross-sectional area of 0.1 to ⁵ mm ² .   Each said continuous fiber strand is formed by laminating | stacking a plurality of fiber bundles formed by bundling a large number of continuous reinforcing fibers in one direction, according to any one of claims 1 to 3. Anchor for anchoring. When the continuous fiber reinforcing member has a flat belt shape, the width is a constant value within a range of 10 to 500 mm, and when the continuous fiber reinforcing member has a cylindrical shape, a diameter within a range of 3 to 500 mm . The anchor for fixing according to any one of claims 1 to 4, wherein the anchor is a constant value .   A fixing anchor having a fan-shaped or trumpet-shaped widened portion at one end or both ends, and a narrow or narrow portion at the other portion,
  The continuous fiber reinforcing member is cut to a predetermined length, and at least one end is formed into a fan shape or a trumpet shape to form the expanded portion, and the other portions are reduced in width or diameter to reduce the width or diameter. In the anchor for fixing,
  The continuous fiber reinforcing member is
  20 to 200 continuous fiber strands arranged in parallel only in one direction, each continuous fiber strand formed by bundling a number of continuous reinforcing fibers in one direction; A flat or cylindrical knitting structure formed by a plurality of longitudinal knitting structures produced by knitting a constraining yarn in a loop shape while continuously forming a chain stitch in the longitudinal direction;
  Each continuous fiber strand is inserted through the chain stitch of the knitted structure continuously knitted in the longitudinal direction in the knitted structure, and inserted transversely to the longitudinal knitted structure By binding the knitting structures adjacent to each other with the inserted yarns, the continuous fiber strands inserted into the longitudinal knitting structure are separated from each other by 0.1 to 20 mm. In this way, it is shaped like a plane or a cylinder, and
  The continuous fiber reinforcing member is
  A narrow portion having a predetermined length and a width and a wide portion which is located between the narrow portions and has a predetermined length and has a maximum width at the central portion are alternately formed. Produced into a long planar shape or cylindrical shape, and cut at the position of the maximum width of the wide portion,
An anchor for fixing characterized by the above.   The anchor for anchoring according to claim 6, wherein the insertion yarn is knitted while being shaken with respect to the knitted structure every predetermined course.   The continuous fiber strand has a cross-sectional area of 0.1 to 5 mm. ² The anchor for anchoring according to claim 6 or 7, wherein the anchor is for anchoring.   Each of the continuous fiber strands is formed by laminating a plurality of fiber bundles formed by bundling a large number of continuous reinforcing fibers in one direction, according to any one of claims 6 to 8. Anchor for anchoring.   The width is 10 to 500 mm when the continuous fiber reinforcing member is planar, and the diameter is 3 to 500 mm when the continuous fiber reinforcing member is cylindrical. The anchor for fixing according to any one of Items 9 to 9. The fibers constituting the continuous strand are carbon fibers or glass fibers; metal fibers such as boron fibers, titanium fibers, and steel fibers; organic fibers such as aramid, PBO (polyparaphenylene benzbisoxazole), polyamide, polyarylate, and polyester. The anchor for fixing according to any one of claims 1 to 10 , wherein the anchor is used alone or in a hybrid mixed with a plurality of types. The constraining yarn and the insertion yarn are polyester fiber, polyamide fiber, polyacrylonitrile fiber, polyvinyl alcohol fiber, polyolefin fiber, organic fiber such as aramid fiber, metal fiber such as titanium fiber, steel fiber, etc .; carbon fiber, glass fiber The anchor for fixing according to any one of claims 1 to 11 , wherein the anchor is a yarn produced by mixing a plurality of inorganic fibers alone or in combination.

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