JP7583576B2 - Reinforcement materials and structures - Google Patents

Description

The present invention relates to a reinforcing material for reinforcing concrete walls, and in particular to a reinforcing material suitable for structures with internal or external corners.

As infrastructure ages and earthquake resistance standards become more stringent, many technologies have been developed to reinforce existing concrete structures such as tunnels and viaducts. In addition, with the recent large number of earthquakes, earthquake resistance reinforcement of concrete frameworks and reinforced concrete, for example, is also being carried out. In this regard, the technologies shown in Patent Documents 1 to 3 are disclosed.

The technology shown in Patent Document 1 is a reinforcing member that is embedded in a concrete structure, in which fiber bundles made of multiple aligned fibers cross each other to form a lattice pattern, each fiber in the fiber bundles is bound with a resin material, and the crossings of the fiber bundles have a cross-sectional shape in which three or more layers of fiber groups extending in one direction and fiber groups extending in the other direction are laminated.

The technology shown in Patent Document 2 involves attaching a surface reinforcement material formed into a mesh shape from a fiber material to the surface (surface of the secondary lining concrete) of a concrete structure (secondary lining concrete), and then forming a covering layer (mortar layer) of mortar or concrete that covers the surface reinforcement material and the surface of the concrete structure, or attaching a surface reinforcement material formed into a mesh shape from a fiber material and solidified with a resin material to the surface of the concrete structure, and then forming a covering layer of mortar or concrete that covers the surface reinforcement material and the surface of the concrete structure.

The technology described in Patent Document 3 is a structural member for reinforcing asphalt roads, concrete roads, and other products, which comprises a gridwork consisting of vertical and horizontal strands arranged at right angles to each other to define an open structure, the strands are mutually locked at their intersections, and the gridwork is impregnated with a thermosetting B-stage resin to maintain the gridwork in a semi-flexible state, and after being added to the product to be reinforced, the resin is heated to convert it into a fully cured composite, thereby stiffening the gridwork and reinforcing the product.

Japanese Unexamined Patent Publication No. 153449/1983 JP 2004-300757 A Patent No. 3715654

Conventional lattice reinforcement materials as shown in Patent Documents 1 and 2, for example, when using lattice reinforcement materials to reinforce tunnel lining concrete, require lattice reinforcement materials that have been pre-bent to suit the site in order to install them at inside or outside corners such as corners and haunches. However, since the bending positions and bending angles of tunnel lining concrete vary from site to site, not only is it very time-consuming to individually manufacture lattice reinforcement materials that have been pre-bent, but it also has the problem of increasing manufacturing costs due to the high processing costs. In addition, in the case of rigid lattice reinforcement materials that have no flexibility, there is the problem that the reinforcement material is forcibly bent at the inside or outside corners, causing it to float against the concrete surface, and it may not be possible to exert the specified tensile force.

On the other hand, the technology shown in Patent Document 3 allows on-site work to be done in a semi-flexible state, so structural members can be flexibly applied according to on-site conditions. However, this requires work such as heating to be done on-site, which takes time and effort, and has the problem of possibly compromising safety.

The present invention has been made to solve the above problems, and aims to provide a reinforcing material and a reinforcing structure that can reinforce structures that have inside or outside corners without requiring much effort.

The reinforcing material according to the present invention is a lattice-shaped reinforcing material formed by intersecting a plurality of first and second bands at a predetermined interval to form a lattice shape, and has a hard net portion formed by hardening the first and second bands by heat treatment, and a flexible deformation portion formed continuously in either the transverse or longitudinal direction of the lattice shape, with the flexible deformation portion being formed between the hard net portions.

In this way, the reinforcing material according to the present invention has a hard net portion formed by hardening the first and second bands by heat treatment, and a flexible deformation portion formed continuously in either the transverse or longitudinal direction of the lattice pattern, and since the flexible deformation portion is formed between the hard net portions, it is possible to bend the hard net portion at the flexible deformation portion, and it has the effect of being able to reinforce structures that have recessed or protruding corners by adhering closely along the wall.

The reinforcing material according to the present invention is such that the flexible deformation portion is formed along the longitudinal direction of the first band or the second band with a length that does not exceed the dimensions of the lattice.

In this way, in the lattice reinforcement material according to the present invention, the flexible deformation portion is formed along the longitudinal direction of the first or second band with a length that does not exceed the dimensions of the lattice, so that the strength of the intersection between the first and second bands is ensured by the hardening of the first and second bands, and the flexibility of the bending direction in the flexible deformation portion is ensured.

The reinforcing material according to the present invention may, as required, have a structure in which the first and second bands are alternately laminated with continuous fibers and coating resin.

In this way, in the reinforcing material according to the present invention, the first and second bands are made of a structure in which continuous fibers and coating resin are alternately laminated, so that the coating resin is interposed between each continuous fiber, integrating multiple continuous fibers and increasing rigidity.

The reinforcing material according to the present invention may, if necessary, have a coating resin that is a thermosetting resin, and the coating resin of the first and second bands that form the hard net portion is hardened by heat treatment.

In this way, in the reinforcing material according to the present invention, the coating resin is a thermosetting resin, and the coating resin of the first and second bands that form the hard net portion is hardened by heat treatment, so that the first and second bands can be integrated with the coating resin to increase their rigidity.

The reinforcing material according to the present invention reinforces the concrete structure as necessary, the tensile strength of the first band is smaller than the tensile strength of the second band, the first band is arranged along the longitudinal direction of the concrete structure, and the flexible deformation portion is abutted against each of the protruding corners at the four corners of the concrete structure to cover the side surface of the concrete structure.

In this way, the reinforcing material of the present invention reinforces the concrete structure, and the tensile strength of the first band is smaller than the tensile strength of the second band. The first band is arranged along the longitudinal direction of the concrete structure, and the flexible deformation portion is abutted against each of the protruding corners at the four corners of the concrete structure to cover the side of the concrete structure. This has the effect of providing sufficient tensile strength of the second band to firmly reinforce the hoops of the concrete structure against lateral shaking, which is particularly important in earthquake-resistant structures.

The reinforcing structure according to the present invention is a reinforcing structure for a structure having an inside corner or an outside corner, using a reinforcing material formed by intersecting a plurality of first ties and a plurality of second ties at a predetermined interval to form a lattice shape, in which the flexible deformation portion of the reinforcing material described in any one of claims 1 to 5 is attached along the curved shape of the inside corner or outside corner of the structure, and hard net portions formed adjacent to both sides of the flexible deformation portion are attached to each of the two faces that form the inside corner or outside corner, reinforcing the wall surface of the structure.

In this way, the reinforcing structure according to the present invention is a reinforcing structure for a structure having an inside corner or an outside corner, using a reinforcing material formed by intersecting a plurality of first bands and a plurality of second bands at a predetermined interval to form a lattice shape, and the flexible deformation portion of the reinforcing material described in any one of claims 1 to 5 is attached to the curved shape of the inside corner or outside corner of the structure, and the hard net portions formed adjacent to both sides of the flexible deformation portion are attached to the two faces that form the inside corner or outside corner, respectively, to reinforce the wall surface of the structure, so that the reinforcing material can be installed to follow the curve of the inside corner or outside corner without previously bending the reinforcing material.

The reinforcement structure according to the present invention, if necessary, forms a mortar-based coating layer on the wall surface of the structure, and embeds the reinforcing material in the coating layer.

In this way, in the reinforcement structure of the present invention, a mortar-based coating layer is formed on the wall surface of the structure, and the reinforcing material is embedded in the coating layer, which has the effect of supplementing the strength of the flexible deformation part and reinforcing the structure.

In the reinforcing structure according to the present invention, if necessary, the structure is a concrete structure, the tensile strength of the first band is formed to be smaller than the tensile strength of the second band, the first band is arranged along the longitudinal direction of the concrete structure, and the flexible deformation portion is abutted against each of the protruding corners at the four corners of the concrete structure, and the side surface of the concrete structure is covered with the reinforcing material.

In this way, in the reinforcing structure of the present invention, the structure is a concrete structure, the tensile strength of the first band is formed to be smaller than the tensile strength of the second band, the first band is arranged along the longitudinal direction of the concrete structure, and the side of the concrete structure is covered with the reinforcing material by abutting the flexible deformation portion against each of the protruding corners at the four corners of the concrete structure. This has the effect of providing sufficient tensile strength of the second band to firmly reinforce the hoops of the concrete structure against lateral shaking, which is particularly important in earthquake-resistant structures.

1 is an overall perspective view of a reinforcing material according to a first embodiment; 2 is an enlarged view showing the structure of the first band and the second band of the reinforcing material according to the first embodiment. FIG. FIG. 4 is a diagram showing a state in which a reinforcing material according to the first embodiment is disposed. 1 is a cross-sectional view of a reinforcement structure in which a structure having an inside corner or an outside corner is reinforced with the reinforcing material according to the first embodiment. FIG. 4 is a flowchart showing a construction method for a reinforced structure using a reinforcing material according to the first embodiment. FIG. 1 is a diagram showing the structure of a typical reinforced concrete column. 11 is a diagram showing a reinforcement structure in which a reinforced concrete column is reinforced with a reinforcing material according to a second embodiment. FIG.

(First embodiment of the present invention)
The reinforcing material and reinforcing structure according to this embodiment will be described with reference to Figures 1 to 5. The reinforcing material according to this embodiment is a reinforcing material formed in a lattice shape by intersecting a plurality of first and second bands at a predetermined interval, and has a structure with a flexible deformation portion so that the reinforcing material can be extended to conform to the shape of an inside corner or an outside corner of a structure. Below, a case where the reinforcing material is attached to a tunnel as an example of a structure will be described, but the target structure is not limited to a tunnel and can be applied to bridges, columns, beams of general structures, etc.

Figure 1 is an overall perspective view of the reinforcing material according to this embodiment, and Figure 2 is an enlarged view of the intersection of the first and second bands of the reinforcing material according to this embodiment. The reinforcing material 1 according to this embodiment includes a first band 10 formed by laminating in multiple layers first continuous fibers 11 in which multiple bundles of fibers have been impregnated with a coating resin 12, and a second band 10 formed by laminating in multiple layers second continuous fibers 21 in which multiple bundles of fibers have been impregnated with a coating resin 22, and is an FRP lattice reinforcement for repairing or reinforcing concrete structures in which multiple first bands 10 and second bands 20 arranged in parallel are perpendicular to each other to form a lattice shape.

The first continuous fibers 11 and the second continuous fibers 21 are cross-laminated at their respective intersections to maintain high intersection strength and to be integrally connected. The coating resin 12 (22) is a binder for bundling the first continuous fibers 11 (second continuous fibers 22), and by resinifying them, the continuous fibers are integrated.

In this example, vinyl ester resin is used as the coating resin 12 (22), but it is not limited to this and may be other thermosetting resins such as epoxy resin and phenolic resin, or thermoplastic resins such as polyester resin, polyamide resin, polyethylene resin, polyvinyl chloride resin, and acrylic resin.

The first continuous fiber 11 and the second continuous fiber 21 are high-performance continuous fibers with high axial rigidity, and may be, for example, carbon fiber, polyester fiber, vinylon fiber, glass fiber, aramid fiber, basalt fiber, PBO fiber, etc.

Furthermore, it is desirable to appropriately select the appropriate coating resin 12 according to the continuous fiber, for example, in the case where the first continuous fiber 11 and the second continuous fiber 21 are carbon fibers, a vinyl ester resin is combined as the coating resin 12.

As shown in FIG. 1, the reinforcing material 1 according to this embodiment has a hard net portion 30 formed by resinifying the coating resin 12 to make it hard, and flexible deformation portions 40 that are formed between the hard net portions 30 and are part of the lattice-shaped first band 10 or second band 20, and are continuously formed in a direction perpendicular to the longitudinal direction of each band. In FIG. 1, the flexible deformation portions 40 are formed in a part of each first band 10, and are continuously formed in a direction perpendicular to the longitudinal direction of the first band 10.

The hard net portion 30 is a net material made of hard resin obtained by thermally curing the coating resin 12, and its manufacturing method is the same as the conventional manufacturing method. For example, it is manufactured by stacking multiple layers of first continuous fibers 11 (second continuous fibers 21) impregnated with the coating resin 12 (22) to form a lattice-like body having multiple first bands 10 and second bands 20, and then pressurizing the upper and lower surfaces of this lattice-like body while heating them at a predetermined temperature. The coating resin 12 (22) in the hard net portion 30 functions as a matrix resin that solidifies and integrates the first continuous fibers 11 (second continuous fibers 21).

The first band 10 and the second band 20 that form the hard net portion 30 have high rigidity due to the thermal curing of the coating resin 12 (22). In addition, the rigidity of the hard net portion 30 can be adjusted by changing the number of layers of the first continuous fibers 11 and the second continuous fibers 21 that form the first band 10 and the second band 20.

At the intersections of the first band 10 and the second band 20 that form the hard net portion 30, the first continuous fibers 11 and the second continuous fibers 21 form cross-laminated layers via the coating resins 12 and 22, thereby ensuring high intersection strength and connecting the fibers without compromising structural integrity.

The flexible deformation section 40 is heated at a lower temperature than the hard net section 30, for a shorter period of time, or not heated at all, so that it does not become completely resinified and harden, and is formed in a state that is much more flexible than the hard net section 30. Therefore, it is possible to freely deform the first continuous fibers 11 of the first band 10, such as by bending, bending, twisting, etc., within the range in which they can be stretched.

The flexible deformation section 40 is formed in a portion of the first band 10 or the second band 20 along the longitudinal direction of the first band 10 or the second band 20, and its overall length is smaller than the dimension P of the lattice formed by the first band 10 and the second band 20. In this way, as shown in FIG. 3 (FIG. 3(A) shows a case where the flexible deformation section 40 is bent straight at the center of the target object, and FIG. 3(B) shows a case where the flexible deformation section 40 is bent obliquely within the range of dimension P depending on the structure of the target object), it is possible to give freedom to the angle of the bending line of the flexible deformation section 40 relative to the band within the range of dimension P of the lattice, and it is possible to absorb construction errors caused by non-uniform angles and curvatures.

If the overall length of the flexible deformation section 40 were to exceed the dimension P of the lattice, the strength of the intersection between the first band 10 and the second band 20 would not be ensured. On the other hand, if the overall length of the flexible deformation section 40 were to be formed in an extremely short dot or line shape, the degree of freedom in the bending direction of the flexible deformation section 40 would be limited.

Furthermore, the flexible deformation portion 40 is formed on all of the first bands 10 or second bands 20 in one reinforcing material 1. In other words, by continuously forming it on all of the first bands 10 or second bands 20, the entire reinforcing material 1 can be bent or curved in a predetermined direction.

When forming the flexible deformation portion 40, it is desirable to form it in a state where the heating temperature does not directly affect the range of the flexible deformation portion 40 compared to the hard net portion 30, i.e., in a state where the amount of heat applied is reduced. This can be achieved, for example, by combining a heating means with a heat-insulating means or a cooling means. Also, the amount of coating resins 12 and 14 used in the flexible deformation portion 40 may be reduced to prevent it from hardening.

Next, a reinforcement structure for a concrete structure using the above-mentioned reinforcement material 1 will be described. Figure 4 is a cross-sectional view of a reinforcement structure when a structure having an inside corner or an outside corner is reinforced with the reinforcement material according to this embodiment. Figure 4(A) shows the reinforcement structure for an inside corner, and Figure 4(B) shows the reinforcement structure for an outside corner.

In Fig. 4 (A) and (B), haunches 43 are formed at the recessed corners and protruding corners between two adjacent concrete walls (first wall 41, second wall 42) to be reinforced. As described above, the reinforcing material 1 is structured so that the adjacent resinified high-rigidity hard net parts 30 can be bent in a predetermined direction via the flexible deformation parts 40. Therefore, by arranging the flexible deformation parts 40 across the first wall 41 and the second wall 42 with the haunches 43 in between, the first wall 41 and the second wall 42 can be reinforced with the high-rigidity hard net part 30, and the flexible deformation parts 40 can be deformed to bring the reinforcing material 1 into close contact with the surfaces of the first wall 41, the haunches 43, and the second wall 42, thereby providing appropriate reinforcement in accordance with the shape of the recessed corners and protruding corners.

The reinforcing material 1 attached to the surface of the concrete structure is fixed by anchor pins or the like, and a coating layer 44 is formed on the surface. This coating layer 44 is formed to a predetermined thickness by spraying or applying polymer cement mortar or the like.

The coating layer 44 is not limited to polymer cement mortar, and may be made of a known mortar-based solidifying material. The flexible deformation portion 40 constituting the reinforcing material 1 has structural continuity with the hard net portion 30, so even if the bending rigidity of the flexible deformation portion 40 is low, it does not become a weak point in terms of strength and has sufficient functionality as a reinforcing material.

Next, a construction method for constructing the reinforcement structure shown in FIG. 4 will be described. FIG. 5 is a flowchart showing a construction method for a reinforcement structure using a reinforcing material according to this embodiment. First, oil, dirt, brittle layers, etc. on the first wall surface 41, the second wall surface 42, and the haunch 43, which are the reinforcement points, are removed using a high-pressure washer or the like (S1). The reinforcing material 1 is placed on the cleaned first wall surface 41, the second wall surface 42, and the haunch 43 (S2). At this time, the hard net portion 30 is placed so as to correspond to the first wall surface 41 and the second wall surface 42, respectively, and if the haunch 43 is formed between the first wall surface 41 and the second wall surface 42, the flexible deformation portion 40 is placed so as to abut against the haunch 43. A plurality of anchor holes are drilled at positions on the first wall surface 41, the second wall surface 42, and the haunch 43 where anchors are to be driven (S3). The anchor pin is inserted into the anchor hole with the pressure member of the anchor pin abutting against the first band 10 and/or the second band 20 at a position corresponding to the drilled anchor hole (S4). The head of the core rod of the anchor pin is struck to expand the tip and fix the anchor pin to the wall surface (S5). The same operation is performed for all anchor pins on the reinforcement material 1 to fix the reinforcement material 1 to the wall surface (S6). The next reinforcement material 1 is placed next to the fixed reinforcement material 1, and the operations of S4 to S6 are repeated to cover the first wall surface 41, the second wall surface 42, and the haunch 43 to be reinforced with the reinforcement material 1 (S7). Then, polymer cement mortar is sprayed on the reinforcement material 1 to form a covering layer 44 (S8). By repeating the above steps, a reinforcement structure is constructed in the concrete structure to be reinforced.

In this way, the reinforcing material 1 according to this embodiment has a hard net portion 30 formed by hardening the first band 10 and the second band 20 by heat treatment, and a flexible deformation portion 40 formed continuously in either the transverse or longitudinal direction of a lattice pattern. Since the flexible deformation portion 40 is formed between the hard net portions 30, the hard net portion 30 can be freely bent by the flexible deformation portion 40, and even in structures with recessed or protruding corners, reinforcement can be performed in a state of being in close contact with the wall.

In addition, by forming the flexible deformation section 40 along the longitudinal direction of the first band 10 or the second band 20 with a length that does not exceed the dimension P of the lattice, the strength of the intersection between the first band 10 and the second band 20 is ensured by the hardening of the first band 10 and the second band 20, and the degree of freedom in the bending direction of the flexible deformation section 40 is also ensured.

Furthermore, since the first band 10 and the second band 20 are made of a structure in which the first continuous fibers 11 (second continuous fibers 21) and the coating resin 12 (22) are alternately laminated, the coating resin is interposed between each continuous fiber, integrating multiple continuous fibers and increasing rigidity.

Furthermore, since the coating resin 12 (22) is a thermosetting resin and the coating resin 12 (22) of the first band 10 and the second band 20 located in the hard net portion 30 is heat treated and hardened, the first band 10 and the second band 20 can be integrated with the coating resin 12 (22) to increase rigidity.

The reinforcing structure according to this embodiment is a reinforcing structure for a structure having an inside corner or an outside corner, using a reinforcing material formed by intersecting a plurality of first bands 10 and a plurality of second bands 20 at a predetermined interval to form a lattice shape, and the flexible deformation portion 40 of the reinforcing material 1 is attached to the curved shape of the inside corner or outside corner of the structure, and the hard net portion 30 formed adjacent to both sides of the flexible deformation portion 40 is attached to each of the two faces that form the inside corner or outside corner to reinforce the wall surface of the structure, so that the reinforcing material can be installed to follow the curve of the inside corner or outside corner without previously bending the reinforcing material.

In addition, a mortar-based coating layer is formed on the wall surface of the structure, and reinforcing material 1 is embedded in the coating layer 44, which makes it possible to supplement the strength of the flexible deformation portion 40 and reinforce the structure.

In this embodiment, the applicable concrete structure has been described as a tunnel, but it can also be applied to the reinforcement and repair of water tunnels such as the headrace and tailrace of power generation facilities, which have a horseshoe-shaped or rectangular cross-section. It can also be applied to various concrete structures such as bridges and columns and beams of general structures.

Second Embodiment of the Invention
The reinforcing material and reinforcing structure according to this embodiment will be described with reference to Fig. 6 and Fig. 7. In this embodiment, a case where the reinforcing material 1 is applied to reinforced concrete, which is widely used as a pillar for general structures, will be described. Note that in this embodiment, the description overlapping with the first embodiment will be omitted.

First, we will explain the reinforced concrete pillars for which the reinforcing material 1 is to be used. Figure 6 is a diagram showing a typical reinforced concrete structure. As shown in Figure 6, a reinforced concrete pillar 60 is formed by arranging several first reinforcing bars 61 in the height direction, wrapping these reinforcing bars with horizontal second reinforcing bars 62 at a specified interval to bundle them together, and burying them in concrete 63. Structures based on old designs (e.g., substructures of expressways) are strong against vertical forces but weak against horizontal forces when an earthquake occurs. In other words, the arrangement interval of the horizontal second reinforcing bars 62 greatly affects the seismic performance of the pillar 60 against earthquakes, for example.

For such reinforced concrete columns 60, the application of the reinforcing material 1 is very effective. Figure 7 is a diagram showing a reinforcing structure when a reinforced concrete column 60 is reinforced with the reinforcing material 1. In Figure 7, the flexible deformation portion 40 of the reinforcing material 1 is arranged to abut against each of the four corners of the column 60, and is bent at the flexible deformation portion 40, so that it can be closely attached to the outer wall of the column 60 and the reinforcing effect can be enhanced. Also, as described above, structures such as the substructure of a highway in the old design are strong against vertical forces and weak against horizontal forces in the event of an earthquake, so the axial rigidity of the first band 10 arranged along the vertical direction of the column 60 may be lowered compared to the second band 20 arranged along the horizontal direction of the column 60. Specifically, for example, the second band 20 arranged along the horizontal direction of the column 60 may be made of carbon fiber, and the first band 10 arranged along the vertical direction of the column 60 may be made of glass fiber. This makes it possible to reduce the cost of manufacturing the reinforcing material 1 while still providing adequate performance for the vertical reinforcement of the column 60, without excessive performance. By forming a mortar-based coating layer 44 on the outermost surface and embedding the reinforcing material 1, the strength of the flexible deformation portion 40 is supplemented to reinforce the column 60.

In this way, in the reinforcing material according to this embodiment, when reinforcing a reinforced concrete column, the tensile strength of the first band 10 is made smaller than the tensile strength of the second band 20, and the first band 10 is arranged along the longitudinal direction of the reinforced concrete, and the flexible deformation portion 40 is abutted against each of the protruding corners at the four corners of the reinforced concrete to cover the side of the reinforced concrete. Therefore, the sufficient tensile strength of the second band 20 can firmly reinforce the hoops of the reinforced concrete against lateral shaking, which is particularly important in earthquake-resistant structures.

In addition, since vertical reinforcement of reinforced concrete columns does not require a large tensile strength, it is possible to realize a reinforcing material 1 that uses the minimum amount of material necessary, thereby saving costs.

REFERENCE SIGNS LIST 1 Reinforcement material 10 First band 11 First continuous fiber 12 Solidified resin 20 Second band 21 Second continuous fiber 22 Solidified resin 30 Hard net portion 40 Flexible deformation portion 41 First wall surface 42 Second wall surface 43 Haunch 44 Covering layer 60 Column 61 First reinforcing bar 62 Second reinforcing bar 63 Concrete

Claims (5)

A reinforcement structure for a structure using a reinforcing material formed in a lattice shape by crossing a plurality of first bands and second bands at a predetermined interval,
The reinforcing material is
a hard net portion formed by hardening the first band and the second band by heat treatment;
A flexible deformation portion is formed continuously in either a transverse direction or a longitudinal direction of the lattice pattern,
The flexible deformation portion is formed between the hard net portions , and a lattice void space surrounded by a first band and a second band intersecting the first band is formed in the flexible deformation portion,
The flexible deformation portion of the reinforcing material is attached along the curved shape of the inside corner or outside corner of the structure, and the hard net portion formed adjacent to both sides of the flexible deformation portion is attached to each of the two surfaces that form the inside corner or outside corner to reinforce the wall surface of the structure.
A reinforcement structure, characterized in that the void space in the flexible deformation portion is filled with a mortar-based hardening agent, and a mortar-based covering layer is formed so that the reinforcing material is embedded . The reinforcing structure according to claim 1,
A reinforcing structure in which the flexible deformation portion is formed along the longitudinal direction of the first band or the second band with a length that does not exceed the dimension of the lattice. The reinforcing structure according to claim 1 or 2,
The reinforcing structure is formed by stacking the first and second bands alternately with continuous fibers and coating resin. The reinforcing structure according to claim 3,
A reinforcement structure in which the coating resin is a thermosetting resin, and the coating resin of the first and second bands forming the hard net portion is hardened by heat treatment. The reinforcing structure according to any one of claims 1 to 4,
The structure is a concrete skeleton ,
The tensile strength of the first band is smaller than the tensile strength of the second band, the first band is arranged along the longitudinal direction of the concrete structure, and the flexible deformation portion is abutted against each of the protruding corner portions at the four corners of the concrete structure to cover the side of the concrete structure.