Reinforcement structure for concrete bodies, and method for reinforcing concrete bodies.

Abstract

To provide a concrete reinforcement structure and a concrete reinforcement method that enable effective reinforcement of concrete bodies. [Solution] The reinforcing structure of the concrete body 1 is a reinforcing body 20 provided on the concrete body 1, comprising a reinforcing material embedded in a groove 4 formed in the concrete body 1, and a hardening agent filled in the groove 4, which is a hardening agent for fixing the reinforcing material to the concrete body 1 by hardening, and a restraining part 50 provided on the concrete body 1, which is a restraining part 50 for preventing the target part 5, including the target surface and its vicinity, from peeling off when an external force is applied to the concrete body 1.

Description

Technical Field

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[0001] The present invention relates to a reinforcing structure for a concrete body and a method for reinforcing a concrete body.

Background Art

[0002] Conventionally, as one of the techniques for reinforcing a concrete body constituting a structure (for example, a civil engineering structure or a building structure), a technique of attaching a sheet-like fiber material to the outer peripheral surface of the concrete body via a resin-based adhesive has been proposed (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Here, in the above conventional technique, as described above, since the sheet-like fiber material is attached to the outer peripheral surface of the concrete body via the resin-based adhesive, when an external force acts on the concrete body, there is a risk that the sheet-like fiber material peels off from the concrete body before the sheet-like fiber material breaks, so that it is difficult to effectively reinforce the concrete body. Therefore, there is room for improvement from the viewpoint of effectively reinforcing the concrete body.

[0005] The present invention has been made in view of the above, and an object thereof is to provide a reinforcing structure for a concrete body and a method for reinforcing a concrete body that enable effective reinforcement of the concrete body.

Means for Solving the Problems

[0006] To solve the above-mentioned problems and achieve the objective, the concrete reinforcement structure described in claim 1 is a reinforcement structure for reinforcing a concrete body, comprising: a reinforcing body provided on the concrete body, comprising a reinforcing material embedded in a groove formed in the concrete body, and a hardening agent filled in the groove, the hardening agent for fixing the reinforcing material to the concrete body by hardening of the hardening agent; and a restraining means provided on the concrete body, the restraining means for preventing the target portion of the concrete body, including the target surface portion which is the surface portion on which the reinforcing body is provided and the portion near the same, from peeling off when an external force is applied to the concrete body.

[0007] The concrete reinforcement structure according to claim 2 is the concrete reinforcement structure according to claim 1, wherein the restraining means includes a non-penetrating member provided so as not to penetrate the concrete, a penetrating member provided so as to penetrate the concrete, and / or the reinforcing body provided on the concrete.

[0008] The concrete reinforcement structure according to claim 3 is the concrete reinforcement structure according to claim 2, wherein the restraining means is a metal non-penetrating member or a penetrating member, and the restraining means is provided to pass through the target portion without going through the reinforcement body.

[0009] The concrete reinforcement structure according to claim 4 is the concrete reinforcement structure according to claim 2, wherein the restraining means is a non-penetrating member or a penetrating member made of fiber, and the restraining means is provided so as to be inserted through the reinforcement body into the target portion.

[0010] The concrete reinforcement structure according to claim 5 is the concrete reinforcement structure according to claim 2, wherein the suppression means is the reinforcement body, and the suppression means is provided on a surface of the concrete body adjacent to the target surface, and is provided continuously or discontinuously with the reinforcement body provided on the target surface.

[0011] The concrete reinforcement structure described in claim 6 is the concrete reinforcement structure described in claim 2, wherein the concrete has a first surface portion which is the target surface portion, a second surface portion which is the target surface portion and is located on the opposite side of the first surface portion, a third surface portion which is located between the first surface portion and the second surface portion, and a fourth surface portion which is located on the opposite side of the third surface portion, the suppression means is the reinforcing body, a plurality of the reinforcing bodies are provided on each of the first surface portion and the second surface portion, a plurality of the suppression means are provided on each of the third surface portion and the fourth surface portion, and the plurality of reinforcing bodies and the plurality of suppression means are configured such that the plurality of reinforcing bodies provided on the first surface portion and the second surface portion and the plurality of suppression means provided on the third surface portion and the fourth surface portion form a continuous spiral shape.

[0012] The concrete reinforcement method according to claim 7 is a reinforcement method for reinforcing a concrete body, comprising: a first forming step of forming a groove in the concrete body; a second forming step of embedding a reinforcing material in the groove formed in the first forming step and filling the groove with a hardening agent and hardening it to form a reinforcement body; and an installation step of providing a suppression means in the concrete body to suppress the peeling off of a target portion of the concrete body, including the target surface portion which is the surface portion on which the reinforcement body is provided and the portion near the target surface portion, when an external force is applied to the concrete body. [Effects of the Invention]

[0013] The concrete reinforcement structure described in claim 1 includes a reinforcing body provided on the concrete body and a restraining means provided on the concrete body, which is a restraining means for preventing the target portion of the concrete body, including the target surface and its vicinity, from peeling off when an external force is applied to the concrete body. Therefore, as shown in the test results described later, it is possible to increase the load-bearing capacity and toughness compared to the conventional technology (a technology that reinforces a concrete body by attaching a sheet-like fibrous material to the outer surface of the concrete body via a resin-based adhesive), and to effectively reinforce the concrete body. Furthermore, compared to cases where no restraining means is provided, it is possible to suppress the peeling off of the target portion of the concrete body, and the reinforcing effect of the reinforcing body can be exerted on the entire concrete body.

[0014] According to the concrete reinforcement structure described in claim 2, the restraining means includes a non-penetrating member provided so as not to penetrate the concrete body, a penetrating member provided so as to penetrate the concrete body, and / or a reinforcing body provided on the concrete body. Therefore, the restraining means can be easily constructed, and the constructability of the reinforcement structure can be improved.

[0015] According to the concrete reinforcement structure described in claim 3, the restraining means is a metal non-penetrating or penetrating member, and since the restraining means is provided so as to be inserted through the target portion without going through the reinforcement body, the restraining means, which is a metal non-penetrating or penetrating member, is relatively easy to install, thereby further improving the constructability of the reinforcement structure.

[0016] According to the concrete reinforcement structure described in claim 4, the restraining means is a non-penetrating or penetrating member made of fiber, and since the restraining means is provided so as to be inserted through the reinforcement body into the target portion, the restraining means, which is a non-penetrating or penetrating member made of fiber, can be firmly fixed to the concrete body by the hardening agent of the reinforcement body, making it relatively easy to install the restraining means, and thus further improving the constructability of the reinforcement structure.

[0017] According to the concrete reinforcement structure described in claim 5, the restraining means is a reinforcing body, and the restraining means is provided on a surface of the concrete body adjacent to the target surface, and is provided continuously or discontinuously with the reinforcing body provided on the target surface. As a result, the restraining means, which is a reinforcing body, is relatively easy to install, thereby improving the constructability of the reinforcement structure. Furthermore, when the restraining means is provided discontinuously with the reinforcing body, the reinforcing material of the reinforcing body and the reinforcing material of the restraining means can be provided without bending, thus avoiding a reduction in the strength of these reinforcing materials.

[0018] According to the concrete reinforcement structure described in claim 6, the restraining means is a reinforcing body, and a plurality of reinforcing bodies are provided on each of the first and second surfaces, and a plurality of restraining means are provided on each of the third and fourth surfaces, and the plurality of reinforcing bodies and the plurality of restraining means provided on the first and second surfaces and the plurality of restraining means provided on the third and fourth surfaces are configured to form a continuous helical shape. As a result, the restraining means, which are reinforcing bodies, are relatively easy to install, thereby improving the constructability of the reinforcement structure. Furthermore, for example, when the reinforcing materials of the reinforcing bodies and the reinforcing materials of the restraining means are provided in a continuous manner, these reinforcing materials can be formed in a helical shape, which helps to relatively suppress the reduction in strength of these reinforcing materials, thus making it easier to ensure the strength of the reinforcing bodies and restraining means. In addition, since the reinforcement structure is easy to automate, it is possible to contribute to reducing the construction cost of the reinforcement structure.

[0019] The concrete reinforcement method described in claim 7 includes a second forming step of embedding a reinforcing material in a groove formed in the first forming step and filling the groove with a hardening agent and hardening it to form a reinforced body, and an installation step of providing a restraining means on the concrete body to prevent the target portion of the concrete body, including the target surface portion and the portion near it, from peeling off when an external force is applied to the concrete body. As a result, the concrete body can be reinforced with relatively simple work, and the workability of the work can be easily ensured. [Brief explanation of the drawing]

[0020] [Figure 1]Perspective view conceptually showing the reinforcement structure and the concrete body according to Embodiment 1 of the present invention. [Figure 2] Plan view of FIG. 1. [Figure 3] Enlarged view showing the peripheral region of the reinforcing body in FIG. 2. [Figure 4] View showing the reinforcing material, where (a) is a side view and (b) is a plan view. [Figure 5] Front view of FIG. 1. [Figure 6] Cross-sectional view taken along the line A-A in FIG. 5. [Figure 7] View showing a modified example of the restraining part, corresponding to FIG. 6. [Figure 8] Perspective view conceptually showing the reinforcement structure and the concrete body according to Embodiment 2 of the present invention. [Figure 9] Front view of FIG. 8. [Figure 10] Cross-sectional view taken along the line B-B in FIG. 9. [Figure 11] View showing a modified example of the restraining part, corresponding to FIG. 10. [Figure 12] Perspective view conceptually showing the reinforcement structure and the concrete body according to Embodiment 3 of the present invention. [Figure 13] Front view of FIG. 12. [Figure 14] Perspective view conceptually showing the reinforcement structure and the concrete body according to Embodiment 4 of the present invention. [Figure 15] View showing the relationship between the loading load of each test body and the deflection of the concrete body in the loading test. [Figure 16] View showing the test results of the loading test. [Figure 17] View showing a modified example of the reinforcing material, where (a) is a side view and (b) is a plan view. [Figure 18] Perspective view showing a modified example of the reinforcement structure.

Modes for Carrying Out the Invention

[0021] The embodiments of the concrete reinforcement structure and concrete reinforcement method according to this invention will be described in detail below with reference to the attached drawings. First, the basic concept of Embodiment [I] will be explained, then the specific details of Embodiment [II] will be explained, and finally, modifications of Embodiment [III] will be explained. However, the present invention is not limited by the embodiments.

[0022] [I] Basic Concepts of the Embodiments First, the basic concepts of the embodiment will be explained. The embodiment generally relates to a concrete reinforcement structure and a concrete reinforcement method for reinforcing a concrete body.

[0023] Here, "concrete body" refers to concrete members (e.g., reinforced concrete, prestressed concrete, unreinforced concrete) that make up a structure, and is a concept that includes concrete beams, columns, walls, floors, lining materials, etc.

[0024] Furthermore, the specific structure and type of "structure" are arbitrary, and the concept includes, for example, newly constructed or existing civil engineering structures (such as tunnels, bridges, dams, and roads) and newly constructed or existing building structures (such as apartment buildings, condominiums, commercial facilities, and factory facilities).

[0025] In the following embodiment, we will describe the case where the concrete body is a concrete beam material that constitutes the bridge girder of an existing bridge.

[0026] [II] Specific details of the embodiment Next, the specific details of the embodiment will be described.

[0027] [Embodiment 1] First, the concrete reinforcement structure according to Embodiment 1 will be described. In this Embodiment 1, the restraining means is a non-penetrating metal member.

[0028] (composition) First, the configuration of the reinforcing structure 10 according to Embodiment 1 and the configuration of the concrete body 1 to which this reinforcing structure 10 is applied will be described.

[0029] (Construction - concrete body) First, let's explain the composition of concrete body 1.

[0030] In the following explanation, the X direction in Figure 1 is referred to as the left-right direction of concrete body 1 (-X direction is the left direction of concrete body 1, and +X direction is the right direction of concrete body 1), the Y direction in Figure 1 is referred to as the front-back direction of concrete body 1 (+Y direction is the front direction of concrete body 1, and -Y direction is the rear direction of concrete body 1), and the Z direction in Figure 1 is referred to as the up-down direction of concrete body 1 (+Z direction is the up direction of concrete body 1, and -Z direction is the down direction of concrete body 1).

[0031] The concrete body 1 is constructed using, for example, a known concrete beam material having multiple surfaces 2 (specifically, flat surfaces 2) (for example, a reinforced concrete beam material including multiple reinforcing bars 3), and as shown in Figure 1, it is formed as a long body with a rectangular cross-sectional shape along the YZ plane.

[0032] Hereafter, as necessary, among the surfaces 2 of the concrete body 1, the surface 2a that is the target surface described later and is located on the front side will be referred to as the "first surface 2a", the surface 2b that is the target surface described later and is located on the rear side (opposite to the first surface 2a) will be referred to as the "second surface 2b", the surface 2c that is located on the upper side (located between the first surface 2a and the second surface 2b) will be referred to as the "third surface 2c", the surface 2d that is located on the lower side (opposite to the third surface 2c) will be referred to as the "fourth surface 2d", the surface 2e that is located on the left side will be referred to as the "fifth surface 2e", and the surface 2f that is located on the right side will be referred to as the "sixth surface 2f".

[0033] Furthermore, as shown in Figure 1, the concrete body 1 is provided such that its longitudinal direction is substantially aligned with the left-right direction, and is supported by a bridge pier (not shown) via a support (e.g., seismic isolation support) (not shown).

[0034] Furthermore, as shown in Figure 1, the concrete body 1 is provided with grooves 4.

[0035] (Structure - Concrete body - Groove section) The grooves 4 are for accommodating the reinforcing bodies 20, which will be described later, and multiple grooves are provided in the concrete body 1.

[0036] Specifically, as shown in Figure 1, the grooves 4 are provided along the entire length of the first surface 2a (or second surface 2b) of the concrete body 1, substantially following the vertical direction, and multiple grooves are arranged side by side along the left-right direction with intervals between them (in Figure 1, four grooves are provided on each of the first surface 2a and second surface 2b).

[0037] Furthermore, while the specific shape and size of the groove 4 are arbitrary, in Embodiment 1 they are set as follows.

[0038] In other words, the shape of the groove 4 (specifically, the front shape) is set to be rectangular.

[0039] However, this is not the only option; for example, it may be set to a curved shape such as a wave.

[0040] Furthermore, the width (length in the left-right direction) of the groove 4 is set to a length that can accommodate the reinforcing body 20 described later. For example, it may be set to a length that is shorter than the left-right length of the concrete body 1, and longer than the diameter of the reinforcing material 30 of the reinforcing body 20 described later.

[0041] However, this is not the only option; for example, the length may be set to be longer than the width of Figure 1 (for example, about twice the width of Figure 1).

[0042] Furthermore, the depth (length in the front-to-back direction) of the groove 4 is set to a length that allows the reinforcing body 20 to be accommodated, while not coming into contact with the reinforcing bars 3 that make up the concrete body 1. For example, it may be set to a length shorter than the front-to-back length of the concrete body 1, and longer than the diameter of the reinforcing material 30 of the reinforcing body 20, which will be described later.

[0043] However, this is not the only option; for example, the length may be set to be longer than the depth shown in Figure 1 (for example, about twice the depth shown in Figure 1).

[0044] (Structure - Reinforcement Structure) Next, the configuration of the reinforcing structure 10 will be described.

[0045] The reinforcing structure 10 is a structure for reinforcing the concrete body 1, and as shown in Figure 1, it comprises a reinforcing body 20 and a restraining part 50.

[0046] Here, "reinforcement" is a concept that includes, for example, improving only the load-bearing capacity of concrete body 1, or / or improving both the load-bearing capacity and ductility of concrete body 1.

[0047] (Structure - Reinforcement structure - Reinforcement body) The reinforcing body 20 is for reinforcing the concrete body 1. As shown in Figures 1 to 3, the reinforcing body 20 is provided on the concrete body 1 and is composed of a reinforcing material 30 and a hardening agent 40.

[0048] (Structure - Reinforcement structure - Reinforcement body - Reinforcement material) Returning to Figure 1, the reinforcing member 30 is the basic structure of the reinforcing body 20. As shown in Figures 1 to 3, this reinforcing member 30 is embedded in a plurality of grooves 4 provided in the first surface portion 2a and the second surface portion 2b of the concrete body 1, respectively.

[0049] Furthermore, while the specific configuration of the reinforcing material 30 is arbitrary, in Embodiment 1, the entire reinforcing material 30 is formed in the shape of a non-flat sheet impregnated with (or not impregnated with) a known resin liquid.

[0050] Specifically, as shown in Figures 3 and 4, the reinforcing material 30 is formed in the shape of a sheet and a blind, and more specifically, it comprises multiple elongated reinforcing material bodies 31 arranged in parallel at intervals from one another, and connecting threads 32 for connecting these reinforcing material bodies 31.

[0051] Furthermore, the reinforcing material 30 is formed in a folded shape in which a part of the reinforcing material 30 is folded back at a distance from the other part of the reinforcing material 30, more specifically, it is formed in a folded shape so that one fold 30a is located on the main body of the reinforcing material 31. However, it is not limited to this, and for example, it may be formed in a folded shape so that one fold 30a is located on the connecting thread 32.

[0052] With this configuration, compared to forming the entire reinforcing material 30 into a flat plate shape, the contact area between the reinforcing material 30 and the hardening agent 40 can be increased, thereby improving the adhesion strength between the reinforcing material 30 and the hardening agent 40.

[0053] In this case, the size of the reinforcing material 30 is arbitrary, but in Embodiment 1, it is set so that it can be accommodated in the groove 4 and so that it can reinforce the concrete body 1 to a desired strength.

[0054] Specifically, the width (length in the left-right direction) of the reinforcing material 30 is set to be shorter than the width of the groove 4.

[0055] Furthermore, the length of the reinforcing member 30 in the front-to-back direction is set to be shorter than the depth of the groove 4.

[0056] Furthermore, the vertical length of the reinforcing member 30 is set to be approximately the same as the vertical length of the groove 4. However, this is not limited to this, and for example, it may be set to be shorter than the vertical length of the groove 4.

[0057] Furthermore, although the method of installing the reinforcing material 30 is arbitrary, in Embodiment 1, multiple reinforcing material bodies 31 of the reinforcing material 30 are arranged side by side along the vertical direction inside each groove 4. Specifically, they are arranged side by side by overlapping parts of adjacent reinforcing material bodies 31 and connecting them via connecting threads 32.

[0058] This installation method allows for effective reinforcement of the concrete structure 1.

[0059] Furthermore, while the material of the reinforcing material 30 is arbitrary, in Embodiment 1 it is made of carbon fiber material.

[0060] This makes it possible to reduce the weight and improve the strength of the reinforcing material 30 while maintaining its durability, thereby improving the usability of the reinforcing material 30.

[0061] However, it is not limited to these materials; for example, it may also be formed from aramid fiber material, glass fiber material, or metal material (for example, steel).

[0062] (Structure - Reinforcement structure - Reinforcement body - Hardening agent) Returning to Figure 3, the hardening agent 40 is used to fix the reinforcing material 30 to the concrete body 1 by hardening. As shown in Figure 3, the hardening agent 40 is filled into a plurality of grooves 4 provided on the first surface 2a and the second surface 2b of the concrete body 1.

[0063] Furthermore, while the specific composition of the hardening agent 40 is arbitrary, in Embodiment 1 it is composed of an epoxy-based filler and an inorganic material (for example, fine aggregate powder).

[0064] This makes it possible to relatively increase the adhesion strength between the reinforcing material 30 and the hardener 40 compared to when the hardener 40 contains only epoxy adhesive.

[0065] However, the composition is not limited to this; for example, it may consist only of an epoxy adhesive. Alternatively, it may consist only of an acrylic resin or methyl methacrylate. Alternatively, it may consist of an acrylic resin (or methyl methacrylate) and fine aggregate powder.

[0066] Furthermore, although the method of installing the hardening agent 40 is optional, in Embodiment 1, it is installed by filling each groove 4 to the extent that the reinforcing material 30 can be fixed to the concrete body 1.

[0067] Specifically, as shown in Figure 3, with the reinforcing material 30 embedded in each groove 4, the hardening agent 40 is used to fill the entire internal space of the groove 4, excluding the space for housing the reinforcing material 30, thereby installing the components.

[0068] However, this is not the only way to install them; for example, when the reinforcing material 30 is embedded in each groove 4, they may also be installed by filling each groove so that only a portion of the entire other space is filled.

[0069] (Configuration - Reinforcement structure - Suppression part) Returning to Figure 1, the suppression section 50 is a suppression means for preventing the target portion 5 of the concrete body 1 from peeling off when an external force is applied to the concrete body 1, and multiple suppression sections are provided on the concrete body 1 as shown in Figures 1 and 5.

[0070] Here, "target portion 5" means a portion of the concrete body 1 that includes the target surface and its vicinity (for example, a portion that is inside the target surface in the front-to-back direction, and whose length in the front-to-back direction is approximately 1 / 10 or less of the length of the concrete body 1 in the front-to-back direction).

[0071] Furthermore, the "target surface portion" refers to the surface portion 2 of the concrete body 1 on the side where the reinforcing body 20 is provided, and in Embodiment 1, this corresponds to the first surface portion 2a and the second surface portion 2b (the same applies to other embodiments).

[0072] Furthermore, the reason for providing the restraining section 50 on the concrete body 1 is as follows.

[0073] In other words, if only the reinforcing body 20 is provided on the concrete body 1, the load-bearing capacity (strength) of the target portion 5 of the concrete body 1 will differ from the load-bearing capacity (strength) of other portions. Therefore, when an external force is applied to the concrete body 1, the target portion 5 is more likely to peel off, making it difficult to effectively reinforce the concrete body 1. To avoid this problem, the restraining portion 50 is further provided on the concrete body 1 to suppress the peeling off of the target portion 5, thereby allowing the reinforcing effect of the reinforcing body 20 to exert throughout the entire concrete body 1, and thus enabling effective reinforcement of the concrete body 1.

[0074] Furthermore, although the specific configuration of the restraining portion 50 is arbitrary, in Embodiment 1, the restraining portion 50 is a non-penetrating member that is provided so as not to penetrate the concrete body 1, and is made of a metal non-penetrating member.

[0075] Specifically, as shown in Figures 5 and 6, the restraining portion 50 is composed of a non-penetrating member of the form of a steel anchor, having a head portion 51 and an embedded portion 52.

[0076] In this case, the specific shape and size of the suppression unit 50 are arbitrary, but in Embodiment 1, they are set as follows.

[0077] Specifically, the shape of the head portion 51 of the suppression unit 50 is set to be approximately conical, as shown in Figure 6. Furthermore, the shape of the embedded portion 52 of the suppression unit 50 is set to be a rod-shaped body with a circular cross-section.

[0078] However, this is not limited to the above. For example, the shape of the head portion 51 of the suppression portion 50 may be set to a shape other than a substantially conical shape (for example, a triangular pyramidal shape, a cylindrical shape, etc.). Alternatively, the shape of the embedded portion 52 of the suppression portion 50 may be set to a rod-shaped body with a cross-sectional shape other than a circle (for example, a square shape, an elliptical shape, etc.).

[0079] Furthermore, the diameter of the head portion 51 of the suppression portion 50 is specifically set to be shorter than the length of the groove portion 4 in the left-right direction. However, it is not limited to this, and for example, it may be set to be longer than the length of the groove portion 4 in the left-right direction.

[0080] Furthermore, the diameter of the embedded portion 52 of the suppression portion 50 is set to a length that can suppress the peeling off of the target portion 5 of the concrete body 1 when an external force is applied to the concrete body 1. Specifically, it is set to be shorter than the diameter of the head portion 51.

[0081] Furthermore, the length of the head portion 51 of the suppression portion 50 in the front-rear direction is set to be longer than the length of the groove portion 4 in the front-rear direction. However, this is not limited to this, and for example, it may be set to be less than or equal to the length of the groove portion 4 in the front-rear direction.

[0082] Furthermore, the length of the embedded portion 52 of the suppression portion 50 in the front-to-back direction is set to a length that can suppress the peeling off of the target portion 5 of the concrete body 1 when an external force is applied to the concrete body 1. Specifically, it is set to be longer than the length of the head portion 51 in the front-to-back direction, and shorter than the length of the concrete body 1 in the front-to-back direction.

[0083] This configuration allows for the simple construction of the restraining section 50 and improves the ease of constructing the reinforcing structure 10.

[0084] However, the invention is not limited to this, and for example, the restraining portion 50 may be a penetrating member provided to penetrate the concrete body 1, and may be made of a metal penetrating member.

[0085] As an example, as shown in Figure 7, the restraining portion 50 may be composed of a steel tie rod type through member having a pair of head portions 51 and an embedded portion 52 provided between the pair of head portions 51.

[0086] Furthermore, while the method of installing the suppression part 50 is arbitrary, in the first embodiment, the suppression part 50 is installed so as to pass through the target part 5 without going through the reinforcing body 20.

[0087] Specifically, as shown in Figures 5 and 6, multiple restraining parts 50 (four restraining parts 50 in Figure 5) are provided to be inserted through the portions of the target parts 5 on the first surface 2a side and the second surface 2b side of the concrete body 1, in the portions corresponding to the gaps between adjacent grooves 4.

[0088] More specifically, in the portion corresponding to the gap described above, multiple restraining parts 50 are arranged in a 2x2 grid with spacing between them, and are positioned so as not to come into contact with the reinforcing bars 3 of the concrete body 1.

[0089] This installation method makes it relatively easy to install the non-penetrating metal restraint section 50, thereby further improving the constructability of the reinforcing structure 10.

[0090] However, the invention is not limited to this; for example, the suppression portion 50 may be provided so as to pass through the target portion 5 via the reinforcing body 20.

[0091] Alternatively, as shown in Figure 7, if the restraining portion 50 is a metal through-member, the restraining portion 50 may be provided so as to pass through the target portion 5 without going through the reinforcing body 20, or it may be provided so as to pass through the target portion 5 via the reinforcing body 20.

[0092] As shown in the test results described later, this reinforcing structure 10 can increase the load-bearing capacity and toughness compared to conventional technology (a technology that reinforces a concrete body by attaching a sheet-like fibrous material to the outer surface of the concrete body via a resin-based adhesive), making it possible to effectively reinforce the concrete body 1. Furthermore, compared to cases where the restraining portion 50 is not provided, the peeling off of the target portion 5 of the concrete body 1 can be suppressed, and the reinforcing effect of the reinforcing body 20 can be exerted on the entire concrete body 1.

[0093] (Methods for reinforcing concrete structures) Next, we will explain the method for reinforcing concrete body 1.

[0094] The method for reinforcing the concrete body 1 is a method for reinforcing the concrete body 1 and includes a first forming step, a second forming step, and an installation step.

[0095] (Method for reinforcing concrete structures - First forming step) First, let's explain the first forming process.

[0096] The first forming step is to form grooves 4 in the concrete body 1.

[0097] Specifically, at the site (or factory) where the concrete body 1 is installed, a worker uses a known cutting tool (for example, a multi-cutter) to manually cut the concrete body 1 on each of the first surface 2a and second surface 2b, thereby forming multiple grooves 4.

[0098] However, this is not limited to this, and for example, a known processing device equipped with a cutting part may drive the cutting part to automatically cut the concrete body 1 on the first surface 2a (or second surface 2b) of the concrete body 1, thereby forming a plurality of grooves 4 (the same applies to the first forming step according to other embodiments).

[0099] (Method for reinforcing concrete structures - Second forming process) Next, the second forming process will be explained.

[0100] The second forming step is a step in which, after the first forming step, a reinforcing material 30 is embedded in the groove 4 formed in the first forming step, and a hardening agent 40 is filled into the groove 4 and hardened to form a reinforcing body 20.

[0101] Specifically, first, a worker folds multiple sheet-like and blind-like reinforcing materials 30, manufactured in a factory or the like, so that there is one fold 30a. Then, the worker arranges multiple reinforcing material bodies 31 of the folded reinforcing materials 30 side by side along the left-right direction, and connects adjacent reinforcing material bodies 31 with connecting threads 32, overlapping a portion of each other, thereby forming the reinforcing material 30.

[0102] Next, the worker fills each groove 4 with hardening agent 40 by injecting a predetermined amount of hardening agent 40 into each groove 4 provided in the concrete body 1 using a known filling tool.

[0103] Next, the worker lifts the formed reinforcing material 30 and fits it into each groove 4, thereby embedding the reinforcing material 30 in each groove 4. Then, the hardening agent 40 is allowed to harden for a predetermined period of time after the embedding to form the reinforcing body 20.

[0104] However, the method is not limited to this, and for example, a known processing apparatus may be used to automatically perform the following operations: forming the reinforcing material 30, filling each groove 4 with the hardening agent 40, and / or embedding the reinforcing material 30 in each groove 4, thereby forming the reinforcing body 20 (the same applies to the second forming step according to other embodiments).

[0105] (Concrete reinforcement method - installation process) Next, I will explain the installation process.

[0106] The installation process involves providing the restraining portion 50 to the concrete body 1 after the second forming process (or before the first forming process, or before the second forming process).

[0107] Specifically, the worker uses a known concrete casting tool to insert a plurality of restraining parts 50 into the portions of the target areas 5 on the first surface 2a and second surface 2b sides of the concrete body 1 that correspond to the gaps between adjacent grooves 4, thereby providing the plurality of restraining parts 50 to pass through the target areas 5 without going through the reinforcing body 20 (i.e., providing the restraining parts 50 to the concrete body 1).

[0108] However, this is not limited to this, and for example, a known processing device may automatically perform the task of installing the above-described suppression unit 50 on the concrete body 1, thereby installing the suppression unit 50 on the concrete body 1 (the same applies to the installation process according to other embodiments).

[0109] The reinforcement method described above allows the concrete body 1 to be reinforced with relatively simple work, making it easier to ensure the work efficiency of the said work.

[0110] (Effects of Embodiment 1) As described above, according to Embodiment 1, the concrete body 1 is provided with a reinforcing body 20 and a restraining part 50 provided on the concrete body 1, which is a restraining part 50 that prevents the target part 5, including the target surface and its vicinity, from peeling off when an external force is applied to the concrete body 1. Therefore, as shown in the test results described later, the load-bearing capacity and toughness can be increased compared to the conventional technology (a technology that reinforces a concrete body by attaching a sheet-like fibrous material to the outer surface of the concrete body via a resin-based adhesive), and the concrete body 1 can be reinforced effectively. Furthermore, compared to the case where the restraining part 50 is not provided, the peeling off of the target part 5 of the concrete body 1 can be suppressed, and the reinforcing effect of the reinforcing body 20 can be exerted on the entire concrete body 1.

[0111] Furthermore, since the restraining portion 50 includes a non-penetrating member that is provided so as not to penetrate the concrete body 1, the restraining portion 50 can be easily constructed, and the constructability of the reinforcing structure 10 can be improved.

[0112] Furthermore, since the restraining portion 50 is a non-penetrating metal member and is provided to pass through the target portion 5 without going through the reinforcing body 20, the restraining portion 50, being a non-penetrating metal member, is relatively easy to install, thereby further improving the constructability of the reinforcing structure 10.

[0113] Furthermore, the process includes a second forming step in which a reinforcing material 30 is embedded in the groove 4 formed in the first forming step, and a hardening agent 40 is filled into the groove 4 and hardened to form a reinforcing body 20, and an installation step in which a restraining part 50 is provided on the concrete body 1 to prevent the target part 5, including the target surface and its vicinity, from peeling off when an external force is applied to the concrete body 1. As a result, the concrete body 1 can be reinforced with relatively simple work, and the workability of the work can be easily ensured.

[0114] [Embodiment 2] Next, a concrete reinforcement structure according to Embodiment 2 will be described. In this Embodiment 2, the restraining means is a non-penetrating member made of fiber. However, unless otherwise specified, the configuration of this Embodiment 2 is substantially the same as the configuration of Embodiment 1, and for configurations substantially the same as those of Embodiment 1, the same reference numerals and / or names used in this Embodiment 1 will be used as necessary, and their descriptions will be omitted.

[0115] (composition) First, the configuration of the reinforcing structure 10 according to Embodiment 2 and the configuration of the concrete body 1 to which this reinforcing structure 10 is applied will be described.

[0116] (Construction - concrete body) First, let's explain the composition of concrete body 1.

[0117] As shown in Figure 8, the concrete body 1 according to Embodiment 2 is configured in the same way as the concrete body 1 according to Embodiment 1.

[0118] (Structure - Reinforcement Structure) Next, the configuration of the reinforcing structure 10 will be described.

[0119] The reinforcing structure 10 according to Embodiment 2 is configured in substantially the same way as the reinforcing structure 10 according to Embodiment 1, as shown in Figure 8. However, the details of the configuration of the suppression part 50 are improved as described below.

[0120] (Configuration - Reinforcement structure - Suppression part) As shown in Figure 8, multiple restraining units 50 are provided on the concrete body 1.

[0121] Here, the specific configuration of the restraining portion 50 is arbitrary, but in Embodiment 2, the restraining portion 50 is a non-penetrating member that is provided so as not to penetrate the concrete body 1, and is made of a non-penetrating member made of fiber.

[0122] Specifically, as shown in Figures 9 and 10, the restraining portion 50 is composed of a continuous fiber anchor-type non-penetrating member made of carbon fiber material with a substantially L-shaped side profile.

[0123] However, the invention is not limited to this, and for example, the suppression portion 50 may be composed of a continuous fiber (or discontinuous fiber) anchor-type non-penetrating member made of aramid fiber material or glass fiber material having a substantially L-shaped side profile. Alternatively, it may be composed of a continuous fiber (or discontinuous fiber) non-penetrating member made of carbon fiber material, aramid fiber material, or glass fiber material having a linear side profile.

[0124] In this case, the specific size of the suppression unit 50 is arbitrary, but in Embodiment 2, it is set as follows.

[0125] In other words, the diameter of the restraining portion 50 is set to a length that can prevent the target portion 5 of the concrete body 1 from peeling off when an external force is applied to the concrete body 1. Specifically, it is set to be approximately the same as the width (length in the left-right direction) of the reinforcing body 20.

[0126] However, this is not the only option; for example, it may be set to be shorter than the width (length in the left-right direction) of the reinforcing body 20.

[0127] Furthermore, the length of the restraining portion 50 in the front-to-back direction is set to a length that can prevent the target portion 5 of the concrete body 1 from peeling off when an external force is applied to the concrete body 1. Specifically, it is set to be shorter than the length of the concrete body 1 in the front-to-back direction, and as an example, it may be set to less than half the length of the concrete body 1 in the front-to-back direction.

[0128] This configuration allows for the simple construction of the restraining section 50 and improves the ease of constructing the reinforcing structure 10.

[0129] However, the invention is not limited to this, and for example, the restraining portion 50 may be a penetrating member provided to penetrate the concrete body 1, and may be made of a fibrous penetrating member.

[0130] As an example, as shown in Figure 11, the restraining portion 50 may be composed of a tie rod type through member made of continuous fibers from a carbon fiber material, with a substantially U-shaped side profile.

[0131] Furthermore, while the method of installing the suppression part 50 is arbitrary, in Embodiment 2, the suppression part 50 is installed so as to pass through the target part 5 via the reinforcing body 20.

[0132] Specifically, as shown in Figures 9 and 10, multiple restraining parts 50 (two restraining parts 50 in Figure 9) are provided to be inserted through the portions 5 of the target area 5 on the first surface 2a side and the second surface 2b side of the concrete body 1 that correspond to the reinforcing body 20.

[0133] More specifically, in the portion corresponding to the reinforcing body 20, multiple restraining parts 50 are arranged in parallel along the vertical direction, spaced apart from each other, and are provided so as not to come into contact with the reinforcing bars 3 of the concrete body 1.

[0134] This installation method allows the non-penetrating fiber member, the restraining portion 50, to be firmly fixed to the concrete body 1 by the hardening agent 40 of the reinforcing body 20. This makes it relatively easy to install the restraining portion 50, thereby further improving the constructability of the reinforcing structure 10.

[0135] However, the method is not limited to this; for example, the suppression portion 50 may be provided using a known method so as to pass through the target portion 5 without going through the reinforcing body 20.

[0136] Alternatively, as shown in Figure 11, if the suppression portion 50 is a fiber-based through member, the suppression portion 50 may be provided so as to pass through the target portion 5 via the reinforcing body 20, or it may be provided so as to pass through the target portion 5 without going through the reinforcing body 20 using a known method.

[0137] With this reinforcing structure 10, similar to the reinforcing structure 10 according to Embodiment 1, it is possible to increase the load-bearing capacity and / or toughness compared to the conventional technology (a technology that reinforces a concrete body by attaching a sheet-like fibrous material to the outer surface of the concrete body via a resin-based adhesive), and to effectively reinforce the concrete body 1. Furthermore, compared to the case where the restraining portion 50 is not provided, it is possible to suppress the peeling off of the target portion 5 of the concrete body 1, and the reinforcing effect of the reinforcing body 20 can be exerted on the entire concrete body 1.

[0138] (Methods for reinforcing concrete structures) Next, we will explain the method for reinforcing concrete body 1.

[0139] The method for reinforcing the concrete body 1 includes a first forming step, a second forming step, and an installation step.

[0140] The first and second forming steps in Embodiment 2 are carried out in substantially the same manner as the first and second forming steps in Embodiment 1, respectively, so their explanation will be omitted below.

[0141] (Concrete reinforcement method - installation process) In the installation process, before the second forming process (or during the second forming process), an operator uses a known tool to form multiple through holes (not shown) at the bottom of each groove 4 before the hardening agent 40 is filled into each groove 4 in the second forming process.

[0142] Then, after inserting the suppression portion 50 into each of the multiple insertion holes, a predetermined amount of hardening agent 40 is injected into the interior of each groove portion 4 in the second forming step and hardened, thereby positioning the suppression portion 50 so as to pass through the target portion 5 via the reinforcing body 20.

[0143] The reinforcement method described above allows the concrete body 1 to be reinforced with relatively simple work, making it easier to ensure the work efficiency of the said work.

[0144] (Effects of Embodiment 2) As described above, according to Embodiment 2, the restraining portion 50 is a non-penetrating member made of fiber, and since the restraining portion 50 is provided so as to be inserted through the target portion 5 via the reinforcing body 20, the restraining portion 50, which is a non-penetrating member made of fiber, can be firmly fixed to the concrete body 1 by the hardening agent 40 of the reinforcing body 20, making it relatively easy to install the restraining portion 50, and thus the constructability of the reinforcing structure 10 can be further improved.

[0145] [Embodiment 3] Next, a concrete reinforcement structure according to Embodiment 3 will be described. In this Embodiment 3, the restraining means is a reinforcing body. However, unless otherwise specified, the configuration of this Embodiment 3 is substantially the same as that of Embodiment 1, and for configurations substantially the same as those of Embodiment 1, the same reference numerals and / or names used in this Embodiment 1 will be used as necessary, and their descriptions will be omitted.

[0146] (composition) First, the configuration of the reinforcing structure 10 according to Embodiment 3 and the configuration of the concrete body 1 to which this reinforcing structure 10 is applied will be described.

[0147] (Construction - concrete body) First, let's explain the composition of concrete body 1.

[0148] The concrete body 1 according to Embodiment 3 is constructed in substantially the same manner as the concrete body 1 according to Embodiment 1, as shown in Figure 12. However, the details of the configuration of the groove portion 4 are improved as described below.

[0149] (Structure - Concrete body - Groove section) As shown in Figure 12, the groove 4 includes a first groove 4a and a second groove 4b.

[0150] (Structure - Concrete body - Groove - First groove) The first groove 4a is for housing the reinforcing body 20, and multiple grooves are provided in the concrete body 1.

[0151] Specifically, as shown in Figure 12, the first groove 4a is provided along the entire length of the first surface 2a (or second surface 2b) of the concrete body 1, substantially following the vertical direction, and multiple grooves are arranged side by side along the left-right direction with intervals between them (in Figure 12, four grooves are provided on each of the first surface 2a and second surface 2b).

[0152] Furthermore, while the specific shape and size of the first groove 4a are arbitrary, in Embodiment 3, they are set to be substantially the same as the shape and size of the groove 4 in Embodiment 1.

[0153] (Structure - Concrete body - Groove - Second groove) The second groove 4b is for housing the restraining section 50, and multiple grooves are provided in the concrete body 1.

[0154] Here, the method of installing the second groove 4b is arbitrary, but in Embodiment 3, it is installed on a surface 2 of the concrete body 1 adjacent to the target surface, and is installed discontinuously with the first groove 4a installed on the target surface.

[0155] Specifically, as shown in Figure 12, the second groove 4b is provided on each of the third surface 2c and fourth surface 2d of the concrete body 1, substantially along the front-to-back direction, along the entire length of the third surface 2c (or fourth surface 2d) in the front-to-back direction (or only a portion of the third surface 2c (or fourth surface 2d) in the front-to-back direction), and multiple grooves are arranged side by side along the left-to-right direction with a gap between them so as not to be continuous with the first groove 4a provided on the first surface 2a (or second surface 2b) of the concrete body 1 (in Figure 12, three grooves are provided on each of the third surface 2c and fourth surface 2d).

[0156] In this case, the specific shape and size of the second groove 4b are arbitrary, but in Embodiment 3, they are set as follows.

[0157] In other words, the shape of the second groove 4b (specifically, its planar shape) is set to be rectangular.

[0158] However, this is not the only option; for example, it may be set to a curved shape such as a wave.

[0159] Furthermore, the width (length in the left-right direction) of the second groove 4b is set to a length that can accommodate the restraining portion 50. For example, it may be set to a length shorter than the left-right length of the concrete body 1, and longer than the diameter of the restraining side reinforcing member 53, which will be described later.

[0160] However, this is not the only option; for example, the length may be set to be longer than the width of Figure 12 (for example, about twice the width of Figure 12), or it may be set to be shorter than the width of Figure 12.

[0161] Furthermore, the depth (vertical length) of the second groove 4b is set to a length that allows the restraining portion 50 to be accommodated and does not come into contact with the reinforcing bars 3 that make up the concrete body 1. For example, it may be set to a length that is shorter than the vertical length of the concrete body 1 and longer than the diameter of the restraining side reinforcing member 53, which will be described later.

[0162] However, this is not the only option; for example, the length may be set to be longer than the depth in Figure 12 (for example, about twice the depth in Figure 12), or shorter than the width in Figure 12.

[0163] (Structure - Reinforcement Structure) Next, the configuration of the reinforcing structure 10 will be described.

[0164] As shown in Figure 12, the reinforcing structure 10 according to Embodiment 3 includes a reinforcing body 20 and a restraining part 50, similar to the reinforcing structure 10 according to Embodiment 1.

[0165] (Structure - Reinforcement structure - Reinforcement body) The reinforcing body 20 is constructed substantially the same as the reinforcing body 20 according to Embodiment 1, comprising a reinforcing material 30 and a hardening agent 40, and multiple units are provided on the concrete body 1.

[0166] Specifically, as shown in Figure 12, the reinforcing material 30 is embedded in a plurality of first grooves 4a provided on the first surface portion 2a and the second surface portion 2b of the concrete body 1, respectively, in substantially the same manner as the reinforcing material 30 according to Embodiment 1.

[0167] Furthermore, as shown in Figure 12, the hardening agent 40 is filled into a plurality of first grooves 4a provided on the first surface portion 2a and the second surface portion 2b of the concrete body 1, respectively, in substantially the same manner as the hardening agent 40 according to Embodiment 1.

[0168] (Configuration - Reinforcement structure - Suppression part) As shown in Figure 12, multiple restraining units 50 are provided on the concrete body 1.

[0169] Here, the specific configuration of the suppression section 50 is arbitrary, but in Embodiment 3, as shown in Figure 13, the suppression section 50 is composed of a reinforcing body consisting of a reinforcing material 53 (hereinafter referred to as "suppression-side reinforcing material 53") and a hardening agent 54 (hereinafter referred to as "suppression-side hardening agent 54"), and is provided on the surface 2 of the concrete body 1 adjacent to the target surface, and is provided discontinuously with the reinforcing body 20 provided on the target surface.

[0170] Specifically, the suppression unit 50 is configured to suppress the peeling off of the target portion 5 of the concrete body 1 when an external force is applied to the concrete body 1.

[0171] More specifically, the restraining portion 50 is configured in substantially the same way as the reinforcing body 20 according to Embodiment 1 (that is, the restraining side reinforcing material 53 is configured in substantially the same way as the reinforcing material 30 according to Embodiment 1 (specifically, a configuration that is a non-flat sheet), and the restraining side hardening agent 54 is configured in substantially the same way as the hardening agent 40 according to Embodiment 1 (specifically, a configuration that includes epoxy-based filler and fine powder aggregate)).

[0172] However, the invention is not limited to this, and for example, the suppression portion 50 may be configured differently from the configuration of the reinforcing body 20 according to Embodiment 1. As an example, the suppression-side reinforcing material 53 may be made in the form of a flat sheet, and the suppression-side curing agent 54 may be made of acrylic resin.

[0173] Furthermore, as shown in Figures 12 and 13, the restraining reinforcing members 53 are arranged in parallel along the front-rear direction inside each second groove 4b provided on the third surface 2c and the fourth surface 2d of the concrete body 1 (that is, inside each second groove 4b that is not continuous with the first groove 4a provided on the first surface 2a (or second surface 2b) of the concrete body 1). More specifically, the restraining reinforcing members 53 are arranged in parallel by overlapping parts of the reinforcing bodies of adjacent restraining reinforcing members 53 and connecting them via connecting threads.

[0174] Furthermore, the inhibiting hardening agent 54 is provided by filling the inside of each second groove 4b, which is provided on each of the third surface portion 2c and the fourth surface portion 2d of the concrete body 1, to the extent that the inhibiting reinforcing material 53 can be fixed to the concrete body 1.

[0175] Such a restraining section 50 allows for a simple construction of the restraining section 50, thereby improving the constructability of the reinforcing structure 10.

[0176] Furthermore, since the restraining section 50, which is a reinforcing body, is relatively easy to install, the constructability of the reinforcing structure 10 can be improved. In addition, when the restraining section 50 is provided discontinuously with the reinforcing body 20, the reinforcing material 30 of the reinforcing body 20 and the restraining side reinforcing material 53 can be provided without bending, thereby avoiding a reduction in the strength of these reinforcing materials.

[0177] Furthermore, as shown in the test results described later, this reinforcing structure 10 can increase the load-bearing capacity and toughness compared to conventional technology (a technology that reinforces a concrete body by attaching a sheet-like fibrous material to the outer surface of the concrete body via a resin-based adhesive), making it possible to effectively reinforce the concrete body 1. In addition, compared to cases where the restraining portion 50 is not provided, the peeling off of the target portion 5 of the concrete body 1 can be suppressed, and the reinforcing effect of the reinforcing body 20 can be exerted on the entire concrete body 1.

[0178] (Methods for reinforcing concrete structures) Next, we will explain the method for reinforcing concrete body 1.

[0179] The method for reinforcing the concrete body 1 includes a first forming step, a second forming step, and an installation step.

[0180] (Method for reinforcing concrete structures - First forming step) In the first forming step, at the site (or factory) where the concrete body 1 is installed, a worker uses a known cutting tool to manually cut the concrete body 1 on each of the first surface portion 2a and the second surface portion 2b of the concrete body 1, thereby forming a plurality of first groove portions 4a.

[0181] Furthermore, similar to the formation of the first groove 4a, a worker manually cuts the concrete body 1 on each of the third surface 2c and fourth surface 2d of the concrete body 1 to form a plurality of second grooves 4b.

[0182] (Method for reinforcing concrete structures - Second forming process) In the second forming step, similarly to the second forming step according to Embodiment 1, the worker, after the first forming step, embeds the reinforcing material 30 into the first groove 4a formed in the first forming step, and fills the first groove 4a with a hardening agent 40 and hardens it to form the reinforcing body 20.

[0183] (Concrete reinforcement method - installation process) In the installation process, after (or before) the second forming process, the worker embeds the restraining reinforcing material 53 into the second groove 4b formed in the first forming process, in substantially the same manner as in the second forming process, and fills the second groove 4b with the restraining hardening agent 54 and hardens it to create the restraining portion 50 in the concrete body 1.

[0184] The reinforcement method described above allows the concrete body 1 to be reinforced with relatively simple work, making it easier to ensure the work efficiency of the said work.

[0185] (Effects of Embodiment 3) As described above, according to Embodiment 3, the restraining portion 50 includes a reinforcing body provided on the concrete body 1, so the restraining portion 50 can be easily constructed and the constructability of the reinforcing structure 10 can be improved.

[0186] Furthermore, the restraining portion 50 is a reinforcing body, and since the restraining portion 50 is provided on a surface portion 2 of the concrete body 1 adjacent to the target surface portion, and is provided discontinuously with the reinforcing body 20 provided on the target surface portion, the restraining portion 50, which is a reinforcing body, is relatively easy to install, thereby improving the constructability of the reinforcing structure 10. In addition, when the restraining portion 50 is provided discontinuously with the reinforcing body 20, the reinforcing material 30 of the reinforcing body and the restraining side reinforcing material 53 can be provided without bending, thereby avoiding a reduction in the strength of these reinforcing materials.

[0187] [Embodiment 4] Next, a concrete reinforcement structure according to Embodiment 4 will be described. In this Embodiment 4, the restraining means is a reinforcing body, and is arranged in a different manner than the restraining means according to Embodiment 3. However, unless otherwise specified, the configuration of this Embodiment 4 is substantially the same as that of Embodiment 3, and for configurations substantially the same as those of Embodiment 3, the same reference numerals and / or names used in this Embodiment 3 will be used as necessary, and their descriptions will be omitted.

[0188] (composition) First, the configuration of the reinforcing structure 10 according to Embodiment 4 and the configuration of the concrete body 1 to which this reinforcing structure 10 is applied will be described.

[0189] (Construction - concrete body) First, let's explain the composition of concrete body 1.

[0190] The concrete body 1 according to Embodiment 4 is constructed in substantially the same manner as the concrete body 1 according to Embodiment 3, as shown in Figure 14. However, the details of the configuration of the groove portion 4 are improved as described below.

[0191] (Structure - Concrete body - Groove section) As shown in Figure 14, the groove 4 includes a first groove 4a and a second groove 4b.

[0192] (Structure - Concrete body - Groove - First groove) The first groove 4a is configured in substantially the same way as the first groove 4a according to Embodiment 3 (however, the shape of the first groove 4a (specifically, the front shape) is set to a rectangular shape).

[0193] Furthermore, as shown in Figure 14, the first groove 4a is provided along the entire length of the first surface 2a (or second surface 2b) of the concrete body 1, with multiple grooves arranged side by side along the left-right direction at intervals from each other (in Figure 14, there are five grooves on each of the first surface 2a and second surface 2b).

[0194] (Structure - Concrete body - Groove - Second groove) The second groove 4b is configured in substantially the same way as the second groove 4b according to Embodiment 3 (however, the shape of the second groove 4b (specifically, the planar shape) is set to a rectangular shape).

[0195] Furthermore, as shown in Figure 14, the second groove 4b is provided on each of the third surface 2c and fourth surface 2d of the concrete body 1, extending along the entire length of the third surface 2c (or fourth surface 2d) in the front-to-back direction (or only a portion of the third surface 2c (or fourth surface 2d) in the front-to-back direction), and multiple grooves are arranged side by side along the left-to-right direction with intervals between them (in Figure 14, there are five on the third surface 2c and four on each of the fourth surface 2d).

[0196] (Structure - Reinforcement Structure) Next, the configuration of the reinforcing structure 10 will be described.

[0197] As shown in Figure 14, the reinforcing structure 10 according to Embodiment 4 includes a reinforcing body 20 and a restraining part 50, which are substantially the same as the reinforcing structure 10 according to Embodiment 3.

[0198] (Structure - Reinforcement structure - Reinforcement body) The reinforcing body 20 is constructed substantially the same as the reinforcing body 20 according to Embodiment 3, comprising a reinforcing material 30 and a hardening agent 40, and as shown in Figure 14, is provided in each of the multiple first grooves 4a provided on the first surface 2a and the second surface 2b of the concrete body 1 (that is, multiple reinforcing bodies 20 are provided on each of the first surface 2a and the second surface 2b of the concrete body 1).

[0199] (Configuration - Reinforcement structure - Suppression part) The restraining section 50 is composed of a reinforcing body consisting of a restraining-side reinforcing material 53 and a restraining-side hardening agent 54, similar to the reinforcing body 20 according to Embodiment 3, and as shown in Figure 14, it is provided in a plurality of second grooves 4b provided on each of the third surface 2c and fourth surface 2d of the concrete body 1 (that is, the plurality of restraining sections 50 are provided on each of the third surface 2c and fourth surface 2d of the concrete body 1).

[0200] (Configuration - Reinforcement Structure - Other Configurations) Furthermore, although the specific configuration of the reinforcing structure 10 is arbitrary, in Embodiment 4, as shown in Figure 14, the plurality of reinforcing bodies 20 provided on the first surface 2a and the second surface 2b of the concrete body 1 and the plurality of restraining parts 50 provided on the third surface 2c and the fourth surface 2d of the concrete body 1 are configured to form a continuous spiral shape.

[0201] Specifically, the plurality of first grooves 4a provided on the first surface 2a and the second surface 2b of the concrete body 1, and the plurality of second grooves 4b provided on the third surface 2c and the fourth surface 2d of the concrete body 1, are formed in an inclined shape (in Figure 14, they are formed in a parallelogram shape), and each second groove 4b is provided so as to be connected to an adjacent first groove 4a.

[0202] Furthermore, a reinforcing body 20 is provided in each of the multiple inclined first grooves 4a, and a restraining portion 50 is provided in each of the multiple inclined second grooves 4b, so that the multiple reinforcing bodies 20 and the multiple restraining portions 50 are formed in a continuous helical shape.

[0203] This configuration makes it relatively easy to install the reinforcing restraint section 50, thereby improving the constructability of the reinforcement structure 10. Furthermore, for example, when the reinforcing material 30 of the reinforcement body 20 and the restraining side reinforcing material 53 are provided in a continuous manner, these reinforcing materials can be formed in a helical shape, which relatively suppresses the reduction in strength of these reinforcing materials, making it easier to ensure the strength of the reinforcement body 20 and the restraining section 50. In addition, since the reinforcement structure 10 is easy to automate, it is possible to contribute to reducing the construction cost of the reinforcement structure 10.

[0204] Furthermore, as shown in the test results described later, this reinforcing structure 10 can increase the load-bearing capacity and toughness compared to conventional technology (a technology that reinforces a concrete body by attaching a sheet-like fibrous material to the outer surface of the concrete body via a resin-based adhesive), making it possible to effectively reinforce the concrete body 1. In addition, compared to cases where the restraining portion 50 is not provided, the peeling off of the target portion 5 of the concrete body 1 can be suppressed, and the reinforcing effect of the reinforcing body 20 can be exerted on the entire concrete body 1.

[0205] (Methods for reinforcing concrete structures) Next, we will explain the method for reinforcing concrete body 1.

[0206] The method for reinforcing the concrete body 1 includes a first forming step, a second forming step, and an installation step.

[0207] The first and second forming steps in Embodiment 4 are carried out in substantially the same manner as the first and second forming steps in Embodiment 3, so their explanation will be omitted below.

[0208] (Concrete reinforcement method - installation process) In the installation process, the worker embeds the restraining reinforcing material 53 into the second groove 4b formed in the first forming process, in substantially the same manner as in the second forming process, and fills the second groove 4b with the restraining hardening agent 54 and hardens it, thereby providing the restraining portion 50 to the concrete body 1.

[0209] Specifically, when the reinforcing material 30 and the restraining reinforcing material 53 of the reinforcing body 20 are provided in a continuous manner, during the second forming process, at the same time that the reinforcing material 30 of the reinforcing body 20 is embedded in the first groove 4a formed in the first forming process, the worker embeds the restraining reinforcing material 53 in the second groove 4b formed in the first forming process. Then, after the hardening agent 40 is filled into the first groove 4a and hardened (or before the hardening agent 40 is filled into the first groove 4a), the worker fills the restraining hardening agent 54 into the second groove 4b and hardens it, thereby providing the restraining portion 50 in the concrete body 1.

[0210] Furthermore, if the reinforcing material 30 and the restraining reinforcing material 53 of the reinforcing body 20 are not provided in a continuous manner, after the second forming process (or before the second forming process), the worker embeds the restraining reinforcing material 53 into the second groove 4b formed in the first forming process, and fills the second groove 4b with the restraining hardening agent 54 and hardens it to provide the restraining portion 50 to the concrete body 1.

[0211] The reinforcement method described above allows the concrete body 1 to be reinforced with relatively simple work, making it easier to ensure the work efficiency of the said work.

[0212] (Effects of Embodiment 4) As described above, according to Embodiment 4, the restraining portion 50 is a reinforcing body, and a plurality of reinforcing bodies 20 are provided on each of the first surface portion 2a and the second surface portion 2b, and a plurality of restraining portions 50 are provided on each of the third surface portion 2c and the fourth surface portion 2d. The plurality of reinforcing bodies 20 and the plurality of restraining portions 50 are configured such that the plurality of reinforcing bodies 20 provided on the first surface portion 2a and the second surface portion 2b and the plurality of restraining portions 50 provided on the third surface portion 2c and the fourth surface portion 2d form a continuous helical shape. As a result, the restraining portions 50, which are reinforcing bodies, are relatively easy to install, thereby improving the constructability of the reinforcement structure 10. Furthermore, for example, when the reinforcing material 30 of the reinforcing body 20 and the restraining side reinforcing material 53 are provided in a continuous manner, these reinforcing materials can be formed in a helical shape, which relatively suppresses the reduction in strength of these reinforcing materials, making it easier to ensure the strength of the reinforcing body 20 and the restraining portion 50. In addition, since the reinforcement structure 10 is easy to automate, it is possible to contribute to reducing the construction cost of the reinforcement structure 10.

[0213] (Test results) Next, we will explain the test results conducted by the applicant. Here, we will describe the load tests performed on various test specimens.

[0214] (Test Results - Overview of Load Test) First, let me explain the overview of the loading test.

[0215] Here, "loading test" refers to a test to confirm the strength (specifically, shear strength) and toughness of various test specimens.

[0216] Furthermore, the test specimens used in the loading test are divided into four types with different reinforcing structures (hereinafter referred to as "test specimen A" through "test specimen D").

[0217] Of these, test specimen A comprises a beam-shaped concrete body 1 and the conventional reinforcing structure described above (a structure in which a sheet-like fibrous material is attached to the outer surface of the concrete body 1 via a resin-based adhesive). Test specimen B comprises a beam-shaped concrete body 1 and the reinforcing structure 10 according to Embodiment 1. Test specimen C comprises a beam-shaped concrete body 1 and the reinforcing structure 10 according to Embodiment 3. Test specimen D comprises a beam-shaped concrete body 1 and the reinforcing structure 10 according to Embodiment 4.

[0218] Furthermore, regarding the loading test method, a known loading test machine (for example, a 3000kN testing machine) is used to statically load the longitudinal center of each test specimen until it breaks. In addition, the loading load and the deflection of the central part during the above-described loading are measured, and the state at the time of breakage is visually observed.

[0219] (Test Results - Detailed results of the load test) Next, we will explain the details of the test results for the loading test.

[0220] As shown in Figures 15 and 16, the maximum loads for each test specimen were such that the maximum loads for test specimens B through D exceeded the maximum load for test specimen A.

[0221] In particular, focusing on the ratio of the maximum load to that of test specimen A (hereinafter referred to as the "load ratio"), the load ratio of test specimen B is 1.45, the load ratio of test specimen C is 1.29, and the load ratio of test specimen D is 1.56. This confirms that the maximum loads of test specimens B through D are approximately 1.3 times or more than the maximum load of test specimen A.

[0222] Furthermore, regarding the deflection of each test specimen under maximum load, the deflection of test specimens B through D exceeded the deflection of test specimen A.

[0223] In particular, focusing on the ratio of the deflection of test specimen A (hereinafter referred to as the "deflection ratio"), the load ratio of test specimen B is 1.47, the load ratio of test specimen C is 1.18, and the load ratio of test specimen D is 1.78. This confirms that the deflection of test specimens B through D at maximum load is at least 1.2 times greater than the deflection of test specimen A at maximum load.

[0224] Furthermore, regarding the state of each test specimen at the time of fracture, in the case of test specimen A, the sheet-like fibrous material peeled off from the concrete body 1, whereas in the case of test specimens B through D, cracks occurred in the concrete body 1, but no peeling occurred in the target portion 5.

[0225] Based on the above test results, test specimens B to D have higher yield strength and toughness compared to test specimen A, and the reinforcing effect of the reinforcing structure can be effectively exerted, thus confirming the effectiveness of the reinforcing structure 10 according to embodiments 1, 3, and 4.

[0226] [III] Modifications of the Embodiment While embodiments of the present invention have been described above, the specific configurations and means of the present invention can be arbitrarily modified and improved within the scope of the technical ideas of each invention described in the claims. Such modifications will be described below.

[0227] (Regarding the problems to be solved and the effects of the invention) First, the problems that the invention aims to solve and the effects of the invention are not limited to those described above. The present invention may solve problems not described above, produce effects not described above, solve only some of the problems described above, or produce only some of the effects described above.

[0228] (Regarding shape, numerical values, structure, and time series) With regard to the components illustrated in the embodiments and drawings, their shapes, numerical values, or the interrelationships of the structure or time series of multiple components can be arbitrarily modified and improved within the scope of the technical concept of the present invention.

[0229] (Combinations of each embodiment) The features described in Embodiments 1 to 4 above can be combined with each other.

[0230] For example, in the concrete body 1 according to Embodiment 1, in addition to the reinforcing structure 10 according to Embodiment 1, a restraining part 50 which is a metal penetrating member, a restraining part 50 according to Embodiment 2, a restraining part 50 which is a fiber penetrating member, a restraining part 50 according to Embodiment 3, or / or a restraining part 50 according to Embodiment 4 may be combined.

[0231] (Regarding concrete structures) In embodiments 1 to 4 described above, the concrete body 1 was explained as a reinforced concrete beam, but it is not limited to this, and for example, it may be a beam made of unreinforced concrete.

[0232] Furthermore, in embodiments 1 to 4 described above, the concrete body 1 is formed as an elongated body with a rectangular cross-sectional shape along the YZ plane, but this is not limited to this. For example, it may be formed as an elongated body with a polygonal (for example, triangular, hexagonal, etc.), circular, or elliptical cross-sectional shape along the YZ plane.

[0233] In this case, if the concrete body 1 is formed as an elongated body with a circular or elliptical cross-sectional shape along the YZ plane, the concrete body 1 will have a plurality of curved surfaces 2.

[0234] Furthermore, in the above embodiment 4, if the concrete body 1 is formed as an elongated body whose cross-sectional shape along the YZ plane is polygonal, circular, or elliptical, the concrete body 1 will have a first surface portion 2a and a second surface portion 2b on which a plurality of reinforcing members 20 are provided, and a third surface portion 2c and a fourth surface portion 2d on which a plurality of restraining members 50 are provided.

[0235] (Regarding the reinforcing structure) In the embodiments 1 and 2 described above, the reinforcing body 20 and the restraining body 50 are provided on the first surface 2a and the second surface 2b of the concrete body 1, respectively, but the invention is not limited to this.

[0236] For example, the reinforcing body 20 and the restraining part 50 may be provided on only one of either the first surface portion 2a or the second surface portion 2b of the concrete body 1. Alternatively, instead of the first surface portion 2a and the second surface portion 2b of the concrete body 1 (or in addition to the first surface portion 2a and the second surface portion 2b), they may be provided on at least one of the third surface portion 2c to the sixth surface portion 2f.

[0237] Furthermore, in the above embodiment 3, it was explained that the reinforcing body 20 is provided on the first surface portion 2a and the second surface portion 2b of the concrete body 1, and the restraining portion 50 is provided on the third surface portion 2c and the fourth surface portion 2d of the concrete body 1, but the embodiment is not limited to this.

[0238] For example, the reinforcing body 20 may be provided on only one of the first surface portion 2a or the second surface portion 2b of the concrete body 1, and the restraining portion 50 may be provided on at least one of the third surface portion 2c to the sixth surface portion 2f of the concrete body 1. Alternatively, the reinforcing body 20 may be provided on at least one of the third surface portion 2c to the sixth surface portion 2f in place of (or in addition to) the first surface portion 2a and the second surface portion 2b of the concrete body 1, and the restraining portion 50 may be provided on at least one of the first surface portion 2a to the sixth surface portion 2f.

[0239] (Regarding the reinforcement) In the embodiments 1 to 4 described above, the reinforcing body 20 was described as comprising a reinforcing material 30 made of carbon fiber material formed into a non-flat sheet impregnated in a resin liquid, and a hardening agent 40 made of epoxy adhesive, but it is not limited to this. For example, it may be composed of a rod-shaped metal reinforcing material 30 and a hardening agent 40 made of cement material.

[0240] (Regarding reinforcing materials) In embodiments 1 to 4 described above, the reinforcing material 30 is described as being formed in the form of a sheet and a blind, but it is not limited to this. For example, as shown in Figures 17(a) and 17(b), a sheet and blind-shaped reinforcing material 30 may be formed by tightly connecting multiple reinforcing material bodies 31 via multiple connecting threads 32 to form a strip-shaped body 33, and by arranging multiple such strip-shaped bodies 33 at intervals from each other. Alternatively, it may be composed of a string-shaped, linear (single-wire or twisted-wire, etc.), flat or non-flat plate-shaped, flat sheet-shaped, or rod-shaped material (the configuration of the suppression-side reinforcing material 53 is substantially the same).

[0241] (Regarding the suppression unit) In the above embodiment 3, the suppression portion 50 was described as being provided discontinuously with the reinforcing body 20 provided on the target surface. However, it is not limited to this configuration, and for example, as shown in Figure 18, it may be provided continuously with the reinforcing body 20 provided on the target surface.

[0242] In this case, the second groove 4b is provided continuously with the first groove 4a provided on the target surface.

[0243] (Note) The concrete reinforcement structure described in Appendix 1 is a reinforcement structure for reinforcing a concrete body, comprising: a reinforcing body provided on the concrete body, comprising a reinforcing material embedded in a groove formed in the concrete body, and a hardening agent filled in the groove, the hardening agent for fixing the reinforcing material to the concrete body by hardening; and a restraining means provided on the concrete body, the restraining means for preventing the target portion of the concrete body, including the target surface portion which is the surface portion on which the reinforcing body is provided and the portion near it, from peeling off when an external force is applied to the concrete body.

[0244] The concrete reinforcement structure of Appendix 2 is the concrete reinforcement structure of Appendix 1, wherein the restraining means includes a non-penetrating member provided so as not to penetrate the concrete, a penetrating member provided so as to penetrate the concrete, and / or the reinforcing body provided on the concrete.

[0245] The concrete reinforcement structure described in Appendix 3 is the concrete reinforcement structure described in Appendix 2, wherein the restraining means is a metal non-penetrating member or a penetrating member, and the restraining means is provided to pass through the target portion without going through the reinforcement body.

[0246] The concrete reinforcement structure described in Appendix 4 is the concrete reinforcement structure described in Appendix 2, wherein the restraining means is the non-penetrating member or the penetrating member made of fiber, and the restraining means is provided so as to be inserted through the reinforcement body into the target portion.

[0247] The concrete reinforcement structure described in Appendix 5 is the concrete reinforcement structure described in Appendix 2, wherein the restraining means is the reinforcing body, and the restraining means is provided on a surface of the concrete body adjacent to the target surface, and is provided continuously or discontinuously with the reinforcing body provided on the target surface.

[0248] The concrete reinforcement structure of Appendix 6 is the concrete reinforcement structure of Appendix 2, wherein the concrete has a first surface portion which is the target surface portion, a second surface portion which is the target surface portion and is located on the opposite side of the first surface portion, a third surface portion which is located between the first surface portion and the second surface portion, and a fourth surface portion which is located on the opposite side of the third surface portion, the restraining means is the reinforcing body, a plurality of the reinforcing bodies are provided on each of the first surface portion and the second surface portion, a plurality of the restraining means are provided on each of the third surface portion and the fourth surface portion, and the plurality of reinforcing bodies and the plurality of restraining means are configured such that the plurality of reinforcing bodies provided on the first surface portion and the second surface portion and the plurality of restraining means provided on the third surface portion and the fourth surface portion form a continuous helical shape.

[0249] The concrete reinforcement method described in Appendix 7 is a method for reinforcing a concrete body, comprising: a first forming step of forming a groove in the concrete body; a second forming step of embedding a reinforcing material in the groove formed in the first forming step and filling the groove with a hardening agent and hardening it to form a reinforcing body; and an installation step of providing a suppression means in the concrete body to suppress the peeling off of a target portion of the concrete body, including the target surface portion which is the surface portion on which the reinforcing body is provided and the portion near the target surface portion, when an external force is applied to the concrete body.

[0250] (Effect of the note) According to the concrete reinforcement structure described in Appendix 1, the structure includes a reinforcing body provided on the concrete body and a restraining means provided on the concrete body, which is a restraining means for preventing the target portion of the concrete body, including the target surface and its vicinity, from peeling off when an external force is applied to the concrete body. As shown in the test results described later, compared to the conventional technology (a technology that reinforces a concrete body by attaching a sheet-like fibrous material to the outer surface of the concrete body via a resin-based adhesive), the load-bearing capacity and toughness can be increased, and the concrete body can be reinforced effectively. Furthermore, compared to cases where no restraining means is provided, the peeling off of the target portion of the concrete body can be suppressed, and the reinforcing effect of the reinforcing body can be exerted on the entire concrete body.

[0251] According to the concrete reinforcement structure described in Appendix 2, the restraining means includes a non-penetrating member provided so as not to penetrate the concrete body, a penetrating member provided so as to penetrate the concrete body, and / or a reinforcing body provided on the concrete body. Therefore, the restraining means can be easily constructed, and the constructability of the reinforcement structure can be improved.

[0252] According to the concrete reinforcement structure described in Appendix 3, the restraining means is a metal non-penetrating or penetrating member, and since the restraining means is provided so as to be inserted through the target portion without going through the reinforcement body, the restraining means, which is a metal non-penetrating or penetrating member, can be installed relatively easily, thereby further improving the constructability of the reinforcement structure.

[0253] According to the concrete reinforcement structure described in Appendix 4, the restraining means is a non-penetrating or penetrating member made of fiber, and since the restraining means is provided so as to be inserted through the reinforcement body into the target portion, the restraining means, which is a non-penetrating or penetrating member made of fiber, can be firmly fixed to the concrete body by the hardening agent of the reinforcement body, making it relatively easy to install the restraining means, and thus further improving the constructability of the reinforcement structure.

[0254] According to the concrete reinforcement structure described in Appendix 5, the restraining means is a reinforcing body, and the restraining means is provided on a surface of the concrete body adjacent to the target surface, and is provided continuously or discontinuously with the reinforcing body provided on the target surface. Since the restraining means, which is a reinforcing body, is relatively easy to install, the constructability of the reinforcement structure can be improved. Furthermore, when the restraining means is provided discontinuously with the reinforcing body, the reinforcing material of the reinforcing body and the reinforcing material of the restraining means can be provided without bending, thus avoiding a reduction in the strength of these reinforcing materials.

[0255] According to the reinforcement structure of the concrete body described in Supplementary Note 6, the suppressing means is a reinforcing body. A plurality of reinforcing bodies are provided on each of the first surface portion and the second surface portion, and a plurality of suppressing means are provided on each of the third surface portion and the fourth surface portion. The plurality of reinforcing bodies provided on the first surface portion and the second surface portion and the plurality of suppressing means provided on the third surface portion and the fourth surface portion are configured so as to form a continuous spiral shape. Therefore, since the suppressing means, which is a reinforcing body, can be relatively easily installed, the workability of the reinforcement structure can be improved. Further, for example, when the reinforcing materials of the reinforcing body and the suppressing means are provided continuously, these reinforcing materials can be formed in a spiral shape. Therefore, since a decrease in the strength of these reinforcing materials can be relatively suppressed, it becomes easier to ensure the strength of the reinforcing body and the suppressing means. Further, since it is easy to automate the construction of the reinforcement structure, it is possible to contribute to a reduction in the construction cost of the reinforcement structure.

[0256] According to the method for reinforcing a concrete body described in Supplementary Note 7, a reinforcing material is embedded in the groove portion formed in the first forming step, and the groove portion is filled with a curing agent and cured, thereby forming a second forming step for forming a reinforcing body, and an installation step of providing a suppressing means for suppressing the peeling off of a target portion including the target surface portion and its vicinity among the portions of the concrete body when an external force acts on the concrete body. Therefore, the concrete body can be reinforced by a relatively simple operation, and it becomes easier to ensure the workability of the operation.

Explanation of Signs

[0257] 1 Concrete body 2 Surface portion 2a First surface portion 2b Second surface portion 2c Third surface portion 2d Fourth surface portion 2e Fifth surface portion 2f Sixth surface portion 3 Steel bar 4 Groove portion 4a First groove portion 4b Second groove portion 5 Target portion 10 Reinforcement structure 20 Reinforcing body 30 Reinforcement material 30a Fold 31 Reinforcement material main body 32 Connecting threads 33. Zing 40 Hardener 50 Suppression part 51 Head section 52 Embedded part 53 Reinforcement material on the restraining side 54 Inhibiting curing agent

Claims

1. A reinforcing structure for reinforcing a concrete body, A reinforcing body provided on the concrete body, comprising a reinforcing material embedded in a groove formed in the concrete body, and a hardening agent filled into the groove, the hardening agent for fixing the reinforcing material to the concrete body by hardening, A restraining means provided on the concrete body, which prevents the target portion of the concrete body, including the surface portion on which the reinforcing body is provided and its vicinity, from peeling off when an external force is applied to the concrete body, A concrete reinforcement structure equipped with the following features.

2. The aforementioned suppression means is Non-penetrating member provided so as not to penetrate the concrete body, A penetrating member provided so as to penetrate the concrete body, or / and, The concrete body includes the reinforcing body provided therein. The concrete reinforcement structure according to claim 1.

3. The suppression means is a metal non-penetrating member or a penetrating member, The suppression means is provided so as to pass through the target portion without going through the reinforcing body. The concrete reinforcement structure according to claim 2.

4. The suppression means is the non-penetrating member or the penetrating member made of fiber, The suppression means is provided so as to pass through the reinforcing body to the target portion. The concrete reinforcement structure according to claim 2.

5. The suppression means is the reinforcing body, The suppression means is provided on a surface of the concrete body adjacent to the target surface, and is provided continuously or discontinuously with the reinforcing body provided on the target surface. The concrete reinforcement structure according to claim 2.

6. The concrete body has a first surface portion which is the target surface portion, a second surface portion which is the target surface portion and is located on the opposite side from the first surface portion, a third surface portion which is located between the first surface portion and the second surface portion, and a fourth surface portion which is located on the opposite side from the third surface portion. The suppression means is the reinforcing body, Multiple reinforcing members are provided on each of the first and second surfaces, Multiple of the aforementioned suppression means are provided on each of the third and fourth surfaces, The plurality of reinforcing bodies provided on the first and second surfaces and the plurality of restraining means provided on the third and fourth surfaces are configured to form a continuous helical shape. The concrete reinforcement structure according to claim 2.

7. A reinforcement method for reinforcing a concrete body, A first forming step of forming a groove in the concrete body, A second forming step involves embedding a reinforcing material in the groove formed in the first forming step and filling the groove with a hardening agent and hardening it to form a reinforcing body. Installation step of providing the concrete body with a suppression means to suppress the peeling off of the target portion of the concrete body, including the target surface portion which is the surface portion on which the reinforcing body is provided and the portion near it, when an external force is applied to the concrete body, A method for reinforcing concrete bodies, including concrete structures.

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