JP4836618B2 - Continuous fiber sheet fixing member and structure reinforcing method using the same - Google Patents

Description

  The present invention provides a continuous fiber sheet fixing member that is suitably used when reinforcing with a high-strength continuous fiber sheet in order to enhance the earthquake resistance of existing concrete structures such as RC structures and SRC structures. The present invention relates to a method for reinforcing structures.

  As a method for reinforcing a concrete structural member, it has been conventionally known that a reinforcing method using a high-strength continuous fiber sheet such as a carbon fiber sheet has been performed. In this method, for example, when reinforcing columns or beams, a continuous fiber sheet is attached to the surface of a concrete frame using an adhesive such as an epoxy resin and wound around a closed mold. The reinforcing effect can be exhibited in a state in which the concrete casing is in close contact with and covered with the concrete casing.

On the other hand, considering the reinforcement of an existing actual structure, it is often difficult to wind a continuous fiber sheet in a closed shape because a wall or slab is attached to a column or beam to be reinforced. In such a case, if the continuous fiber sheet is simply firmly bonded to the surface of a part of the pillar or beam to be reinforced, the reinforcing effect is improved compared to the reinforcing method in which the entire circumference of the independent pillar or beam is wound in a closed form. Is extremely low.
Further, when reinforcing a planar member such as a wall or a slab, it is necessary to securely fix both ends of the continuous fiber sheet to the wall or the slab, or a column or beam around them.

  Therefore, various attempts have been made in the past in order to firmly fix both ends of the continuous fiber sheet to enhance the reinforcing effect of the structure. In Patent Document 1, Patent Document 3 and Patent Document 8, a fixing plate for reinforcing the continuous fiber sheet is bonded to the continuous fiber sheet attached to the structure with an adhesive, and anchor bolts are used from above the fixing plate. A structure reinforcing technique by pressing a continuous fiber sheet is disclosed (hereinafter referred to as “A type”, see FIG. 10).

  In Patent Document 6, a circular bar is provided at the corner between a column or beam of a structure and a wall or slab, and a continuous fiber sheet attached to the column or beam is wound around the circular bar and folded and pasted. A structure reinforcement technique is disclosed by pressing both the continuous fiber sheet and the folded back continuous fiber sheet with an L-shaped pressing member called an anchoring angle and an anchor bolt (hereinafter referred to as “B type”). reference).

  In Patent Document 2 and Patent Document 3, after attaching a continuous fiber sheet to the corner of the column or beam and the wall, an L-shaped fixing angle is bonded to the end of the continuous fiber sheet located at this corner. In addition, a structure reinforcing technique is disclosed in which anchor bolts are driven in a direction that is not the continuous fiber sheet bonding surface to fix the continuous fiber sheet (hereinafter referred to as “C type”, see FIG. 12).

  In Patent Document 4, a cylindrical fixing jig is provided at a corner between a column or a beam and a wall, a continuous fiber sheet is wound around this, a continuous fiber sheet is attached, and then the continuous fiber sheet is bonded to the cylindrical fixing jig. A structure reinforcement technique is disclosed by driving anchor bolts in a non-plane direction and fixing a continuous fiber sheet (hereinafter referred to as “D type”, see FIG. 13).

In Patent Document 7, a structure reinforcing technique is disclosed in which a continuous fiber sheet is pasted in advance on a U-shaped jig, and the continuous fiber sheet is pasted and fixed on the continuous fiber sheet. (Hereinafter referred to as “E type”, see FIG. 14).
JP-A-9-144338 JP-A-9-144339 JP-A-9-144334 Japanese Patent Laid-Open No. 10-298930 Japanese Patent Laid-Open No. 10-252018 JP-A-10-238134 JP 2000-274085 A Japanese Patent Laying-Open No. 2005-068921

  However, the above-described various structure reinforcing techniques do not exhibit a sufficient reinforcing effect in terms of strength calculation. Specifically, in the A type, by driving anchor bolts into the continuous fiber sheet attached to the structure, the continuous fiber sheet is cut, the sheet attachment area is reduced, and the pressing is insufficient. Therefore, there is a problem that the reinforcing effect is lowered. On the other hand, if the amount of fiber reinforcement is increased by increasing the thickness of the fiber to be attached, the size of the fixing plate and the anchor bolt increases, and the weight of these reinforcing materials increases, resulting in poor workability. Furthermore, as the size of the fixing plate increases, the fiber cutting area increases, and the bonded portion between the fixing plate and the continuous fiber sheet is not calculated within the effective range for structural calculation. However, there is also a problem that the reinforcing effect cannot be improved dramatically.

  In the B type, there is a problem that the diameter of the circular bar is small, and the stress of the continuous fiber sheet is effectively transmitted to the circular bar and cannot be absorbed. In addition, when pressing the continuous fiber sheet at the position adjacent to the circular bar with the L-shaped fixing angle, there is a possibility that the sheet rolled back at the corner of the fixing angle may be cut. In order to hold down the continuous sheet, the continuous fiber sheet is cut as in the case of the A type, resulting in a problem that the reinforcing effect is lowered.

  In the C type, since the anchor bolt is not directly driven into the continuous fiber sheet, the continuous fiber sheet is not cut. However, if there is an increase in the amount of reinforcement due to an increase in the width and thickness of the continuous fiber sheet, the size of the fixing plate and anchor bolt that hold it down by weight and pressure will inevitably increase, and the increase in these weights There is a problem of reducing workability. In addition, as described above, there is a problem that the bonded portion between the fixing plate and the continuous fiber sheet cannot be calculated as an effective reinforcing range. Furthermore, when the fixing plate is fixed in a direction opposite to the tensile tension P of the continuous fiber sheet, the fixing plate is fixed in order to resist the fixing force to the moment P · e (product of the tensile tension P and the anchor bolt-column distance e). There is a problem that it is necessary to increase the size of the plate.

  In the D type, anchor bolts are driven into the cylindrical fixing jig, and as a result, the continuous fiber sheet wound around the cylindrical fixing jig is cut, resulting in a problem that the reinforcing effect is lowered. Also, in terms of construction, there is a problem that it is difficult to wind the continuous fiber sheet around a cylindrical fixing jig on site to fix the continuous fiber sheet so that it does not loosen. Furthermore, when the cylindrical fixing jig is fixed by striking in the direction opposite to the tensile tension P of the continuous fiber sheet, the fixing force is to be resisted to the moment Pe (product of the tensile tension P and the anchor bolt-column distance e). There is also a problem that it is necessary to increase the size of the cylindrical jig.

  In the E type, since the fixing with the continuous fiber sheet attached to the housing is outside the fixing jig, the fixing range becomes long. In addition, there is a problem that the bonded portion between the fixing jig and the continuous fiber sheet cannot be calculated as an effective reinforcing range.

  The present invention has been made in view of the above-mentioned points, and the object of the present invention is to be lightweight and compact that can reinforce a structure easily and more effectively without cutting the continuous fiber sheet. An object of the present invention is to provide a continuous fiber sheet fixing member having a shape and a structure reinforcing method using the same.

  The present invention will be described below. In order to facilitate understanding of the present invention, reference numerals in the accompanying drawings are appended in parentheses, but the present invention is not limited to the illustrated embodiment.

The invention of claim 1 is a structure in which a continuous fiber sheet (20) (hereinafter also referred to as "sheet") is joined to a surface (101 or 102) of a structure and both ends (27, 28) are fixed. It is a continuous fiber sheet fixing member (10, 12) (hereinafter, also referred to as “sheet fixing member”) used for reinforcement work of an object,
The continuous fiber sheet fixing member includes a sheet winding part (30, 32) (hereinafter also referred to as “winding part”) for winding and fixing the end of the continuous fiber sheet, and a sheet winding part. And flange portions (40, 42) provided on both sides in a direction perpendicular to the continuous fiber sheet winding direction,
The cross-sectional shape of the sheet wrapping portion is a substantially triangular shape such that at least two corners of the wrapping portion are smooth curved surfaces or a substantially elliptical shape having a flat surface (70) on the structure side,
The sheet winding portion has a surface on the structure side and an end fixing surface (90) for winding and fixing the end of the continuous fiber sheet,
For winding and fixing the end of the continuous fiber sheet on the winding part, after placing the continuous fiber sheet fixing member on the continuous fiber sheet adhered to the structure leaving the end, the end is wound. It is done by winding it around the part and fixing it so that it is fixed on the end fixing surface,
The flange portion has through holes (60, 61, 62, 63) or notches for fixing the continuous fiber sheet fixing member by attaching fixing means (50) on the structures at both ends of the continuous fiber sheet. The continuous fiber sheet fixing member, which is provided, is intended to solve the above problem.

  “Continuous fiber sheet fixing member” is a fixing means such as an anchor bolt on a beam or a column or a wall or a slab at a corner where a beam or a column and a wall are orthogonal or a corner where a beam and a slab are orthogonal Used by being attached by.

  “Sheet winding direction” refers to a direction in which an end portion of a continuous fiber sheet is pulled to wind around a sheet winding portion.

  The “sheet winding part” is a part for fixing the end of the continuous fiber sheet with an adhesive or the like, and the cross-sectional shape thereof is an abbreviation in which at least two corners on the continuous fiber sheet pulling direction side have smooth curves. Although a triangle is preferable in terms of processing or construction, a substantially elliptical shape having a flat surface on the structure side may be used. When the sheet winding portion is placed on the continuous fiber sheet, it is preferable not to fix the sheet winding portion on the surface of the winding portion on the structure side with an adhesive or the like. As the “curved surface” is smoother, the continuous fiber sheet is less likely to be cut. In addition, if the length of the sheet winding portion in the sheet winding direction is too long, there will be problems in processing, construction, or strength. preferable. The “surface on the structure side” refers to a surface facing the structure of the sheet winding portion.

  The “flange portion” in the present invention is a bowl-shaped plate provided on both sides in the direction perpendicular to the sheet winding direction in order to fix the sheet winding portion to the structure. It is preferable that the flange portion is provided on the sheet winding portion so as to be in close contact with the structure while ensuring a height that is slightly lifted from the structure. This is because a continuous fiber sheet is passed between the sheet winding portion and the structure.

  Further, the thickness of the flange portion may be reduced to some extent when the flange portion is fixed by the fixing means in the structure fixing surface direction of the sheet. On the other hand, when the flange portion is fixed by the fixing means in the sheet pulling direction, the shape of the flange portion is a substantially rectangular parallelepiped (thick plate), and the through hole or notch for providing the fixing means is substantially the same. It is provided in the flange part of a rectangular parallelepiped.

  The “end fixing surface” is a surface on which the end of the continuous fiber sheet is wound and the end of the sheet is attached, and indicates a surface other than the surface on the structure side of the sheet winding portion.

  An anchor bolt is preferably used as the “fixing means”, but is not limited to this as long as it is a fixing means capable of maintaining sufficient strength with respect to the structure. In addition, the flange portion is provided with "through holes" for providing fixing means. For example, if each through hole is circular, due to the displacement of the bolt fixing holes opened in the walls and slabs during construction, In some cases, it does not coincide with the through hole of the flange. Therefore, in order to prevent this and offset this lateral dimensional error, one of the through holes may be elongated in the direction in which the flange portion extends, or instead of the through hole, in the direction in which the flange portion extends. It is preferable to provide a slit-like “notch” that opens.

According to a second aspect of the present invention, in the continuous fiber sheet fixing member according to the first aspect, the winding and fixing of the end portion of the continuous fiber sheet on the winding portion is performed continuously on the surface of the sheet winding portion on the structure side. It is performed without fixing to a fiber sheet.
The invention according to claim 3 is the continuous fiber sheet fixing member according to claim 1 or 2, wherein the width and depth are such that the continuous fiber sheet is allowed to pass through the structure-side surface of the sheet winding portion. It is characterized by the groove | channel having having.
Invention of Claim 4 is a continuous fiber sheet fixing member as described in any one of Claims 1-3. WHEREIN: On the structure side surface of a winding part, and the structure side surface of a flange part It is characterized in that the groove for allowing the passage of another continuous fiber sheet for reinforcing the structure in a direction perpendicular to the continuous fiber sheet pulling direction (25) (80) is provided.

In the invention according to claim 4, the “groove” is smaller than its width in a direction penetrating both flange portions on both sides of the continuous fiber sheet fixing member. Need to be larger. Moreover, the depth of a groove | channel needs to have a depth which can accommodate another continuous fiber sheet.
The invention of claim 5 includes the continuous fiber sheet fixing member according to any one of claims 1 to 4 and a continuous fiber sheet that is wound and fixed on a sheet winding portion of the continuous fiber sheet fixing member. The structure reinforcing structure includes a structure-reinforcing structure in which a structure-side surface of the sheet winding portion is not fixed to the continuous fiber sheet.

Invention of Claim 6 sticks the continuous fiber sheet (20) to the structure (101) which requires reinforcement, and the both ends (27, 28) of a continuous fiber sheet are any one of Claims 1-5. while wound around the sheet winding unit of the continuous fiber sheet fixing member according (10, 12, 15) (30,32,35) in section, on a continuous fiber sheet affixed to a structure, a continuous fiber sheet fixing member A step of placing and positioning the continuous fiber sheet fixing member (10, 12, 15) without adhering the surface (70, 75) of the sheet winding portion of the sheet to the continuous fiber sheet, and a continuous fiber sheet fixing member A continuous fiber sheet fixing member using through holes (60, 61, 62, 63, 65, 66) or notches provided in the flange portions (40, 42, 45) and the fixing means (50, 50) To the structure The object is to solve the above problem by a structure reinforcing method comprising a step and a step of fixing both ends of the continuous fiber sheet to the end fixing surfaces (90, 92, 95).

In the invention of claim 6 , after pasting one continuous fiber sheet to a structure, when pasting another continuous fiber sheet that reinforces the direction perpendicular to the tensile direction of such continuous fiber sheet, The structure is reinforced using the continuous fiber sheet fixing member according to claim 4 . Another continuous fiber sheet is affixed to the attachment position of a continuous fiber sheet fixing member along the longitudinal direction of such a sheet fixing member.

The invention of claim 7 is the structure reinforcing method according to claim 6 , wherein the continuous fiber sheet is carbon fiber. The “carbon fiber sheet” includes a double-sided mesh type, a cloth type (unidirectional woven fabric), a release paper type, and the like, and it is preferable to use any of these, but the invention is not limited thereto.

  According to the first aspect of the present invention, there is provided a continuous fiber sheet fixing member having a lightweight and compact shape capable of easily and more effectively reinforcing a structure without cutting the continuous fiber sheet. Can do.

According to the invention described in claim 4 , it is possible to provide a continuous fiber sheet fixing member having a light weight and a compact shape, which can reinforce the structure more firmly using two continuous fiber sheets perpendicular to each other. it can.

According to the invention described in claim 6 , the continuous fiber sheet and the continuous fiber sheet fixing member according to any one of claims 1 to 4 can be used for the structure while being easily attached. A structure reinforcing method capable of providing a sufficient reinforcing effect can be provided.

According to invention of Claim 7 , when a continuous fiber sheet is carbon fiber, the structure reinforcement construction method which can give a sufficient reinforcement effect to a structure can be provided.

  Such an operation and gain of the present invention will be made clear from the best mode for carrying out the invention described below.

  Hereinafter, the present invention will be described based on embodiments shown in the drawings.

FIG. 1 is a perspective view illustrating a state in which a continuous fiber sheet is fixed to a continuous fiber sheet fixing member according to a first embodiment of the present invention and attached to a structure. The structure to which the continuous fiber sheet fixing member 10 is attached has a surface 101 on which the continuous fiber sheet fixing member 10 is placed, and surfaces 100 and 102 orthogonal to the surface. The illustrated continuous fiber sheet fixing member 10 is a member used for reinforcing a surface for fixing the continuous fiber sheet 20 to the surface 101 and fixing both ends 27 (28) thereof. A sheet winding portion 30 for winding and fixing the end portion 27 (28) of the continuous fiber sheet 20; and a sheet winding portion 30 provided on both sides in a direction perpendicular to the continuous fiber sheet winding direction. Flange portions 40 and 41,
The cross-sectional shape of the sheet winding part 30 is a substantially triangular shape in which at least two corners of the sheet winding part 30 have a smooth curve or a substantially elliptical shape having a flat surface on the structure side,
The sheet winding part 30 has a surface on the structure side and an end fixing surface 90 for winding and fixing the end of the continuous fiber sheet,
The continuous fiber sheet fixing member 10 is wound on and fixed to the winding portion of the end portion 27 (28) of the continuous fiber sheet 20 on the continuous fiber sheet 20 adhered to the surface 101 leaving the end portion 27 (28). Is mounted on the end fixing surface 90 by winding the end portion 27 (28) around the winding portion 30, and the flange portions 40 and 41 are connected to both ends of the continuous fiber sheet 20. The fixing means 50 is attached on the surface 101, and through holes 60 and 61 or notches for fixing the continuous fiber sheet fixing member 10 are provided.

  As shown in the drawing, the present invention is a fixing member in which the sheet winding portion 30 and the flange portions 40 and 41 are integrally processed, and the end portion 27 (28) of the continuous fiber sheet 20 is formed on the sheet winding portion 30. The sheet fixing member 10 is fixed to the surface 101 on the flange portions 40 and 41, and the roles are divided. Therefore, the present invention is different from the prior art in that the end portions 27 and 28 are firmly fixed to the surface 101 and the surface to which the other end is fixed without cutting the continuous fiber sheet 20, so that the surfaces 101 and 102 are fixed. Can provide a sufficient reinforcing effect.

  The continuous fiber sheet fixing member 10 shown in FIG. 1 has an anchor bolt on a beam or column at a corner where a structure, for example, a beam or column (here, surface 101) and a wall (here, surface 100) intersect. It is used by being attached by such fixing means. A construction method using the fixing member 10 will be described in detail later.

  FIG. 2 is a cross-sectional view showing the continuous fiber sheet fixing member according to the first embodiment of the present invention. FIG. 2A shows a sheet winding portion 30 of the continuous fiber sheet fixing member 10 and flange portions 40 (41) provided on both sides of the continuous fiber sheet fixing member 10 as a first embodiment of the present invention. The positional relationship is explained. Next, FIG.2 (b) and FIG.2 (c) have demonstrated each site | part which decomposed | disassembled Fig.2 (a). FIG.2 (b) is sectional drawing of the sheet | seat winding part 30 of the continuous fiber sheet fixing member 10 of 1st embodiment of this invention. On the other hand, FIG.2 (c) is sectional drawing of the flange part 40 of the continuous fiber sheet fixing member 10 of 1st embodiment of this invention. Based on these drawings, the sheet winding portion 30 and the flange portion 40 (41) of the continuous fiber sheet fixing member 10 will be described below.

  The sheet winding portion 30 is a portion for fixing the end portion 27 (28) of the continuous fiber sheet 20 with an adhesive or the like (see FIG. 2A). As shown in FIG. 2 (b), the cross-sectional shape is determined by the surface on the structure side and the surface on which the end fixing portion 90 for fixing the end portion 27 (28) of the continuous fiber sheet 20 becomes a curved surface. It is a figure that can be enclosed, and is preferably a substantially triangular shape or a substantially elliptical shape having a plane on the structure side. In order to stably place the continuous fiber sheet fixing member 15 on the sheet 20, it is necessary to be flat on the structure side of the sheet winding part 30, and the wound sheet 20 is not cut. Furthermore, it is necessary to provide a smooth curved surface with no corners in the range indicated by R1 of the sheet winding portion 30. This shape is also preferable in terms of processing, construction, and appearance.

  It is preferable that the surface on the structure side is a plane, which is more workable when the sheet winding portion 30 is placed on the continuous fiber sheet 20 and the sheet fixing member 10 is fixed to the surface 101. Because.

  Of the above-described cross-sectional shapes, the substantially triangular shape is preferably a triangle in which at least two corners on the surface 100 side (see FIG. 1) are smooth curved surfaces, but all three corners may have curved surfaces. . The end fixing unit 90 that fixes the end 27 (28) of the sheet is preferably flat. This is because the fixing work to the end fixing surface 90 of the sheet 20 is easier when there is no unevenness. In addition, this shape is more preferable in terms of appearance because the shape of the sheet fixing member is less noticeable when it is applied to a corner or the like in the room. However, the end fixing surface 90 does not necessarily have to be a flat surface, and may be a curved surface that can be formed when the structure-side surface 70 is a substantially elliptical shape.

  Smooth curved surfaces provided at at least two corners are preferable because the smoother the curvature is, the more the stress applied to the end portion 27 (28) of the continuous fiber sheet is dispersed and absorbed, and the continuous fiber sheet is less likely to be cut.

  Further, if the length of the sheet winding portion 30 in the sheet winding direction is too long, there will be a problem in terms of processing, construction, or strength. Increased and preferable.

  As shown in FIG. 2 (c), the flange portion 40 (41) of the continuous fiber sheet fixing member 10 has both sides perpendicular to the sheet winding direction in order to fix the sheet winding portion 30 to the surface 101. It is the plate-shaped part provided in (refer FIG. 1). The flange portion 40 (41) is provided with a through hole 60 (61) or a notch. Then, a fixing means 50 (see FIG. 2A) such as an anchor bolt is inserted into the through hole 60 (61) or the notch, and the flange 40 (41) is brought into close contact with the surface 101 and fixed. Thus, the entire continuous fiber sheet fixing member 10 is fixed to the surface 101.

  Since the flange 40 (41) is fixed to the surface 101 by the fixing means 50, the thickness of the flange is a thin plate that can maintain strength from the viewpoint of processing, construction, and cost. Is preferred.

  FIG. 3 is an explanatory view showing the continuous fiber sheet fixing member of the first embodiment of the present invention. Fig.3 (a) is a top view which shows the state which fixed the continuous fiber sheet to the continuous fiber sheet fixing member of 1st embodiment of this invention, and was attached to the structure. FIGS. 3B and 3C show examples of front cross-sectional views of the continuous fiber sheet fixing member of FIG. As shown in FIG. 3A, the sheet winding portion 30 is fixed to the surface 101 via the continuous fiber sheet 20, and the flange portion 40 is directly fixed to the surface 101.

  Therefore, as shown in FIG. 3B, the positional relationship between the sheet winding portion 30 and the flange portion 40 is such that the structure-side surface 70 of the sheet winding portion 30 and the fixing surface 77 to the surface 101 of the flange portion 40. , 78 may be provided so as to be substantially in the same plane. In such a case, when the sheet winding portion 30 of the continuous fiber sheet fixing member 10 is placed on the sheet 20 fixed on the surface 101, the flange portions 40 and 41 are slightly equal to the thickness of the sheet 20. Although it floats up, if the bolting is performed using the elasticity of the plate-like flange portion 40, the sheet 20 is more firmly pressed against the surface 101 and is brought into close contact therewith.

  On the other hand, as shown in FIG. 3C, when the sheet 20 has a certain thickness, or when the flange portion is thick and the elastic force cannot be expected so much, the sheet of the continuous fiber sheet fixing member 10 ′ is used. You may provide the groove | channel 82 which has a width | variety and depth of the grade which allow passage of the sheet | seat 20 in surface 70 'by the side of the structure of winding part 30'. Further, as an alternative to providing a groove, the flange portions 40 ′ and 41 ′ can be formed by lifting the surface 70 ′ on the structure side of the sheet winding portion 30 ′ from the structure by the thickness of the sheet 20 ′, The fixing surfaces 77 ′ and 78 ′ of 41 ′ may be provided in close contact with the surface 101.

  An anchor bolt is preferably used as the fixing means, but the fixing means is not limited to this as long as the fixing means can maintain a sufficient strength against the structure.

  Further, the through holes 60 and 61 for attaching the fixing means 50 and fixing the flange portions 40 and 41 to the surface 101 are, for example, for fixing bolts opened in walls and slabs at the time of construction when each through hole is circular. There may be a case where the hole does not coincide with the through hole of the flange portion due to the positional deviation of the hole. Therefore, in order to prevent this and to offset this lateral dimensional error, one of the through holes 61 or both of the through holes 60 and 61 may be elongated in the direction in which the flange portion extends, or the through holes Instead of the hole, it is preferable to provide a slit-like notch that opens in the direction in which the flange extends.

  FIG. 4 is a perspective view showing a state in which the continuous fiber sheet is fixed to the continuous fiber sheet fixing member according to the second embodiment of the present invention and attached to the structure. FIG. 5 is a cross-sectional view showing a continuous fiber sheet fixing member according to a second embodiment of the present invention. FIG. 5 (a) shows the sheet winding portion 35 of the continuous fiber sheet fixing member 15 and the flange portions 45 (46) provided on both sides of the continuous fiber sheet fixing member 15 as a second embodiment of the present invention. The positional relationship is explained. Next, FIG.5 (b) and FIG.5 (c) have demonstrated each site | part which decomposed | disassembled Fig.5 (a). FIG.5 (b) is sectional drawing of the sheet | seat winding part 35 of the continuous fiber sheet fixing member 15 of 2nd embodiment of this invention. On the other hand, FIG.5 (c) is sectional drawing of the flange part 45 of the continuous fiber sheet fixing member 15 of 2nd embodiment of this invention. Furthermore, FIG. 6 is explanatory drawing which shows the continuous fiber sheet fixing member of 2nd embodiment of this invention. Fig.6 (a) is a top view which shows the state which fixed the continuous fiber sheet to the continuous fiber sheet fixing member of 2nd embodiment of this invention, and was attached to the structure. FIG.6 (b) is a top view which shows the continuous fiber sheet fixing member 15 of 2nd embodiment of this invention. FIG.6 (c) is sectional drawing which shows the continuous fiber sheet fixing member 15 of 2nd embodiment of this invention.

  As shown in FIG. 4, the continuous fiber sheet fixing member 15 of the second embodiment of the present invention has a basic structure similar to the continuous fiber sheet fixing member 10 of the first embodiment of the present invention. This is common in that it has a hook and a flange. However, as shown in FIGS. 5A and 6, the structure-side surface 75 of the sheet winding portion 35 of the continuous fiber sheet fixing member 15 and the flange portion 45 (46) of the second embodiment of the present invention. ) Fixing grooves 79 are provided with grooves 85, 86 (see FIG. 5B), 87 that allow passage of other continuous fiber sheets 25 arranged in a direction perpendicular to the sheet 20 to be wound. It differs from the continuous fiber sheet fixing member 10 of a 1st form by the point. The components of the continuous fiber sheet fixing member 15 will be described below based on these drawings. Based on these drawings, the sheet winding portion 30 and the flange portion 40 (41) of the continuous fiber sheet fixing member 10 will be described below.

  As shown in FIG. 5 (b), the overall shape of the sheet wrapping portion 35 is substantially a triangle or a substantially oval shape whose surface on the structure side is a plane, as in the first embodiment of the present invention. It is preferable. In order to stably place the continuous fiber sheet fixing member 15 on the sheet 20, it is necessary to be flat on the structure side of the sheet winding portion 35, and so that the wound sheet 20 is not cut, This is because it is necessary to provide a smooth curved surface with no corners, particularly in the range indicated by R2 of the sheet winding portion 35. This shape is also preferable in terms of processing, construction, and appearance.

  As shown in FIGS. 6B and 6C, another continuous fiber sheet 25 arranged on the structure-side surface 75 of the sheet winding portion 35 in a direction perpendicular to the continuous fiber sheet 20 to be wound. It is preferable that a groove 86 is provided in a direction penetrating both flange portions 45 and 46 that allow the passage of. Between the sheet winding part 35 and the surface 101, there is a continuous fiber sheet 20 that is wound around the sheet winding part 35 and fixed. Furthermore, if another continuous fiber sheet 25 is arranged so as to be orthogonal to the continuous fiber sheet 20, the continuous fiber sheets 20 and 25 are interposed between the sheet winding portion 35 of the fixing member 15 and the surface 101. This is because the flange portion is lifted from the surface 101 by the thickness.

  When the depth of the groove 86 of the winding portion 35 is the thickness of the continuous fiber sheet 25, the flange portion 45 is lifted by the thickness of the continuous fiber sheet 20, so that the bolt is tightened using the elasticity of the flange portion. , The continuous fiber sheets 20 and 25 can be firmly fixed to the surface 101. On the other hand, when the depth of the groove 86 of the winding portion 35 is the total thickness of the continuous fiber sheets 20 and 25, the flange portion 45 can be more firmly fixed to the surface 101, It is more preferable when the flange portion 45 is thick and cannot use elasticity.

  Moreover, as shown in FIG.5 (c) and FIG.6 (c), sectional drawing of the flange parts 45 and 46 of the continuous fiber sheet fixing member 15 of 2nd embodiment of this invention is 2nd of this invention. Grooves 85 and 87 that allow passage of other continuous fiber sheets 25 are provided on the fixing surface of the flange portion having the same structure as the flange portion 40 of the continuous fiber sheet fixing member 15 of the embodiment.

  The sheet wrapping portion 35 and the flange portions 45 and 46 are provided with grooves 85, 86, and 87 that allow the other continuous fiber sheet 25 to pass through. The widths of the grooves 85, 86, and 87 are different from each other. It is preferable that the width is substantially the same as or slightly wider than the width of the continuous fiber sheet 25.

  By providing the flange portion 45 so as to lift the winding portion 35 by bending or welding, the passage of the other continuous fiber sheet 25 can be allowed without providing the groove 86 in the winding portion 35.

  FIG. 7 is a perspective view showing the continuous fiber sheet fixing member 12 according to the third embodiment of the present invention. The continuous fiber sheet fixing member 12 according to the third embodiment of the present invention can fix the sheet fixing member 12 in the direction of the surface 100 perpendicular to the mounting direction of the sheet fixing member 12. It is a modification of 2nd embodiment. That is, in the third embodiment of the present invention, since the fixing direction is different from that of the first and second embodiments, the shape of the flange portion is different. Accordingly, the description of the sheet winding portion 32 is omitted here, and only the flange portion 42 will be described below.

  The shape of the flange portion 42 is preferably a substantially rectangular parallelepiped (thick plate). In other words, first, it is preferable that the flange portion 42 has a certain area on the surface to be fixed to the surface 101 on which the continuous fiber sheet 20 is fixed. Further, in order to ensure the strength when the through holes 62 and 63 or the notches for attaching the fixing means 50 to the surface 100 adjacent to the surface 101 in the orthogonal direction are provided, the flange portions 42 and 43 include It is preferable that the flange portions 42 and 43 have a height with respect to the surface 101 on which the flange portions 42 and 43 are placed. Therefore, the flange part 42 by 3rd embodiment of this invention becomes a substantially rectangular parallelepiped thick structure.

  The through holes 62 and 63 for providing the fixing means are provided in parallel to the surface 100 in the direction of the surface 100 from the center portion of the surface on the surface 102 side of the flange portions 42 and 43 of the respective substantially rectangular parallelepipeds. preferable.

  The materials of the continuous fiber sheet fixing members 10, 12, and 15 according to the first, second, and third embodiments of the present invention described above are strong enough to withstand the force applied to the reinforcement of the concrete structure, and the sheet fixing. From the viewpoint of the workability of the member, it is preferably a metal.

  Next, the structure reinforcement construction method using the continuous fiber sheet fixing member according to the present invention will be described with reference to FIG. When reinforcing a structure using the continuous fiber sheet fixing members 10 and 12 according to the first or third embodiment of the present invention, the following steps are performed.

  The structure reinforcing method using the continuous fiber sheet fixing member according to the first embodiment of the present invention is a first step, in which the both ends 27 (28) of the continuous fiber sheet 20 are left a little while being reinforced. Affixed to the required surface 101. In the second step, the both ends 27 (28) of the remaining continuous fiber sheet 20 are wound on the sheet winding portion 30 of the continuous fiber sheet fixing member 10 and are applied onto the continuous fiber sheet 20 attached to the surface 101. The continuous fiber sheet fixing member 10 is placed and positioned without adhering the structure-side surface 70 (see FIG. 2) of the sheet winding portion 30 of the continuous fiber sheet fixing member 10 to the continuous fiber sheet 20. In the third step, the continuous fiber sheet fixing member 10 is fixed to the surface 101 using the through holes 60 and 61 provided in the flange portion 40 of the continuous fiber sheet fixing member 10 or the notch and the fixing means 50. In the last step, both ends 27 (28) of the continuous fiber sheet 20 are fixed to the end fixing surface 90, and a complete reinforcement method is completed by these four steps.

  In this construction method, it is particularly important to fix the structure-side surface 70 of the sheet winding portion 30 to the sheet 20 without fixing it with an adhesive or the like in the second step. If such a structure-side surface 70 is bonded, the effective reinforcing area of the continuous fiber sheet 20 against the tension in the direction opposite to the direction in which the sheet 20 is wound up to the front of the continuous fiber sheet fixing member 10. This is because it becomes an area. However, if the structure-side surface 70 of the sheet winding portion 30 is fixed to the sheet 20 without being fixed with an adhesive or the like, the end portion 27 (28) of the sheet 20 is calculated as an effective reinforcement range. It is preferable because it has a high reinforcing effect.

  Next, referring to FIG. 4, the structure reinforcing method using the continuous fiber sheet fixing member according to the second embodiment of the present invention will be described in the following steps. In the first step, the both ends 27 (28) of the continuous fiber sheet 20 are left a little, and this is attached to the surface 101 that requires reinforcement. In the second step, another continuous fiber sheet 25 is fixed to the continuous fiber sheet 20 at right angles to the root portions of both ends 27 (28) of the remaining continuous fiber sheet 20. In the third step, the continuous fiber sheets 20 and 25 attached to the surface 101 while winding the remaining ends 27 (28) of the continuous fiber sheet 20 around the sheet winding part 30 of the continuous fiber sheet fixing member 10. The continuous fiber sheet fixing member 15 is placed and positioned without adhering the surface 75 on the structure side of the sheet winding portion 35 of the continuous fiber sheet fixing member 15 to the continuous fiber sheet 20 on the crossing point. In the fourth step, the continuous fiber sheet fixing member 10 is fixed to the surface 101 using the through holes 60, 61 provided in the flange portion 40 of the continuous fiber sheet fixing member 10 or the notch and the fixing means 50. In the last step, both ends 27 (28) of the continuous fiber sheet 20 are fixed to the end fixing surface 90, and a complete reinforcement method is completed by these five steps.

  The structure reinforcing method using the continuous fiber sheet fixing member 15 according to the second embodiment of the present invention is a second step in order to utilize the groove of the continuous fiber sheet fixing member 15 according to the second embodiment of the present invention. It is characteristic that the other continuous fiber sheet 25 is fixed to the root portion of both ends 27 (28) of the remaining continuous fiber sheet 20 so as to be perpendicular to the continuous fiber sheet 20.

  The other continuous fiber sheet 25 may be provided with through holes for providing fixing means 50 such as bolts in advance.

  The structure reinforcing method using the continuous fiber sheet fixing member 12 according to the third embodiment of the present invention shown in FIG. 7 uses the continuous fiber sheet fixing members 10 and 15 according to the first and second embodiments of the present invention. Since the structure reinforcing method fixing means and the fixing direction thereof are different, the description of the structure reinforcing method using the third embodiment is omitted.

  In the structure reinforcing method using the continuous fiber sheet fixing member 12 according to the third embodiment of the present invention, since the fixing direction is different from the fixing surface of the continuous fiber sheet 20, the continuous fiber sheet according to the second embodiment of the present invention. When using the fixing member 15, when another continuous fiber sheet 25 is passed through the grooves 85, 86, 87 of the flange portion 45 of the sheet fixing member 15, the sheet 25 passed by the fixing means 50 is cut. This is preferable because the structure can be sufficiently reinforced in the direction of the sheet 25.

  FIG. 8 is an explanatory view showing an example of a structure reinforcing method using the continuous fiber sheet fixing members 10 and 12 according to the present invention. Fig.8 (a) is sectional drawing which showed an example of the structure reinforcement construction method using the continuous fiber sheet fixing member 10 by 1st embodiment of this invention. As shown in FIG. 1, when the continuous fiber sheet fixing member 10 is fixed to a corner where two structures are orthogonal to each other and the continuous fiber sheet 20 is fixed to two adjacent structures, the reinforcing effect is obtained. Is effective and preferable. Moreover, you may fix so that the both ends 27 (28) of the continuous fiber sheet 20 may be pulled in the same plane shape.

  FIG.8 (b) is sectional drawing which showed an example of the structure reinforcement construction method using the continuous fiber sheet fixing member 10 by 1st embodiment of this invention. As shown in FIG. 8 (a), the fixing means does not have to be individually independent fixing means 50, but a hole is formed in the structure so as to communicate with both sides of the structure columns and beams facing each other. Two continuous fiber sheet fixing members 10 facing each other may be fixed together.

  FIG.8 (c) is sectional drawing which showed an example of the structure reinforcement construction method using combining the continuous fiber sheet fixing members 10 and 12 by 1st and 3rd embodiment of this invention. The continuous fiber sheet fixing member 10 according to the first embodiment of the present invention is disposed on a surface without a convex portion such as a pillar of the structure, while the three sides of the convex portion of the pillar or the like are surrounded by the continuous fiber sheet 20. And the both ends are fixed with the continuous fiber sheet fixing member 12 according to the third embodiment of the present invention, and finally the sheet fixing member 12 provided at both ends of the pillar and the like, and the sheet fixing provided on the opposite surface If the members 10 are respectively connected and fixed, even a column or beam having a wall or a slab can exhibit the same reinforcing effect as if it was closed and reinforced by the continuous fiber sheet 20.

  FIG. 9 is an explanatory view showing another example of the structure reinforcing method using the continuous fiber sheet fixing member according to the present invention. As shown in FIG. 9 (a), when a seismic wall is punched out and a passage is formed, the portion of the seismic wall left on the punched area has a stronger structure than the other parts. drop down. Therefore, in order to reinforce the strength of this part, two continuous fiber sheets are used so that they intersect on the earthquake-resistant wall left on the punched area and are connected to the earthquake-resistant walls on both sides. If both ends of the fiber sheet are fixed, the strength of such portions can be reinforced.

  Moreover, as shown in FIG.9 (b), when an earthquake-resistant wall is punched and an opening is made, the strength of a structure falls in the part of the earthquake-resistant wall around the punched area compared with other parts. Therefore, in order to reinforce the strength of this part, a well-shaped arrangement is arranged around the area punched using four continuous fiber sheets, and an oblique continuous fiber sheet is arranged on the extension of the diagonal of the opening. And the intensity | strength of such a part can be reinforced by fixing the both ends of each continuous fiber sheet.

  Furthermore, as shown in FIG. 9C, in the case of a structure in which pillars and beams are arranged in a lattice shape, an enclosed rectangle is used in order to prevent the region surrounded by these from collapsing due to an earthquake or the like. On the other hand, it is possible to reinforce the structure by arranging continuous fiber sheets diagonally.

  While the present invention has been described in connection with embodiments that are presently the most practical and preferred, the present invention is not limited to the embodiments disclosed herein. However, it can be changed as appropriate without departing from the scope or spirit of the invention that can be read from the claims and the entire specification, and a continuous fiber sheet fixing member with such a change and a reinforcing method using the same are also disclosed in the present invention. Should be understood as being included in the technical scope of

It is a perspective view which shows the state which fixed the continuous fiber sheet to the continuous fiber sheet fixing member of 1st embodiment of this invention, and was attached to the structure. It is sectional drawing which shows the continuous fiber sheet fixing member of 1st embodiment of this invention. It is explanatory drawing which shows the continuous fiber sheet fixing member of 1st embodiment of this invention. It is a perspective view which shows the state which fixed the continuous fiber sheet to the continuous fiber sheet fixing member of 2nd embodiment of this invention, and was attached to the structure. It is sectional drawing which shows the continuous fiber sheet fixing member of 2nd embodiment of this invention. It is explanatory drawing which shows the continuous fiber sheet fixing member of 2nd embodiment of this invention. It is a perspective view which shows the state which fixed the continuous fiber sheet to the continuous fiber sheet fixing member of 3rd embodiment of this invention, and was attached to the structure. It is explanatory drawing which shows an example of the structure reinforcement construction method using the continuous fiber sheet fixing member which concerns on this invention. It is explanatory drawing which shows an example of the structure reinforcement construction method other using the continuous fiber sheet fixing member which concerns on this invention. It is sectional drawing which shows A type structure reinforcement technology. It is sectional drawing which shows a B type structure reinforcement technique. It is sectional drawing which shows C type structure reinforcement technology. It is sectional drawing which shows D type structure reinforcement technology. It is sectional drawing which shows E type structure reinforcement technology.

Explanation of symbols

10, 12, 15 Continuous fiber sheet fixing member 20, 25 Continuous fiber sheet 27, 28 End 30, 32, 35 Sheet winding part 40, 41, 42, 43, 45, 46 Flange part 50 Fixing means 60, 61, 62, 63, 65, 66 Through hole 70, 75 Structure side surface 77, 79 Fixing surface 80, 85, 86 Groove 90, 92, 95 End fixing portion 100, 101, 102 surface

Claims (7)

A continuous fiber sheet fixing member used for reinforcing a structure for joining a continuous fiber sheet to a structure and fixing both ends thereof,
The continuous fiber sheet fixing member is provided on both sides in a direction perpendicular to the continuous fiber sheet winding direction of the sheet winding part, and a sheet winding part for winding and fixing the end of the continuous fiber sheet And a flange portion that is
The cross-sectional shape of the sheet wrapping portion is a substantially triangular shape such that at least two corners of the sheet wrapping portion are smooth curved surfaces or a substantially elliptical shape having a flat surface on the structure side,
The sheet winding portion has a surface on the structure side and an end fixing surface for winding and fixing an end portion of the continuous fiber sheet,
After winding and fixing the end portion of the continuous fiber sheet to the winding portion after placing the continuous fiber sheet fixing member on the continuous fiber sheet bonded to the structure, leaving the end portion The end portion is wound around the winding portion and fixed to the end fixing surface,
The flange portion is provided with a through hole or a notch for fixing the continuous fiber sheet fixing member by attaching fixing means on structures on both ends of the continuous fiber sheet. Continuous fiber sheet fixing member. The winding and fixing of the end portion of the continuous fiber sheet to the winding portion are performed without fixing the surface of the sheet winding portion on the structure side to the continuous fiber sheet. Item 10. The continuous fiber sheet fixing member according to Item 1.
The continuous surface according to claim 1 or 2, wherein a groove having a width and a depth to allow passage of the continuous fiber sheet is provided on a surface on the structure side of the sheet winding portion. Fiber sheet fixing member.
Surface of the structure side of the winding unit, and, on the surface of the structure side of the flange portion, in addition to continuous fibers for reinforcing the structure in a direction perpendicular to the front Symbol continuous fiber sheet pulling direction The continuous fiber sheet fixing member according to any one of claims 1 to 3, further comprising a groove for allowing the sheet to pass therethrough.
A structure reinforcing structure comprising: the continuous fiber sheet fixing member according to any one of claims 1 to 4; and the continuous fiber sheet fixed by being wound around the sheet winding portion of the continuous fiber sheet fixing member. Because
  The structure reinforcement structure characterized by the structure side surface of the said sheet winding part not being fixed with the said continuous fiber sheet.
A process of attaching a continuous fiber sheet to a structure requiring reinforcement;
While winding the both ends of the continuous fiber sheet around the sheet winding part of the continuous fiber sheet fixing member according to any one of claims 1 to 4, on the continuous fiber sheet attached to the structure, Placing and positioning the continuous fiber sheet fixing member without adhering the surface on the structure side of the sheet winding portion of the continuous fiber sheet fixing member to the continuous fiber sheet; and
Fixing the continuous fiber sheet fixing member to the structure using a through hole or notch provided in the flange portion of the continuous fiber sheet fixing member and a fixing means;
Fixing both ends of the continuous fiber sheet to an end fixing surface;
A structure reinforcement construction method comprising: The structure reinforcing method according to claim 6 , wherein the continuous fiber sheet is carbon fiber.

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