Reinforcement structure for structures, method for reinforcing structures, and reinforcement member

Abstract

This invention provides a reinforcing structure that can be formed in a short time, has minimal variation in quality due to the worker, and prevents peeling and blistering of the coating after construction. [Solution] The reinforcing structure 100 comprises a plate-shaped member 20 fixed to the surface of a structure 10 and a fast-curing resin coating 30. The plate-shaped member 20 has a plurality of openings 26a, 26b penetrating in the thickness direction T, a main surface portion 22 positioned facing the structure 10, and leg portions 24 connecting the main surface portion 22 and the structure 10, with a space 40 between the main surface portion 22 and the structure 10. The fast-curing resin coating 30 is formed of a fast-curing resin that fills the interior of the openings 26a, 26b of the plate-shaped member 20 and covers the surface of the main surface portion 22.

Description

Technical Field

[0001] The present invention relates to a reinforcement structure of a structure, a method for reinforcing a structure, and a reinforcing member.

Background Art

[0002] For the purposes of waterproofing, suppression of environmental degradation, improvement of abrasion resistance, improvement of hygiene, etc., a coating film is formed on the surface of a wall surface, a ceiling surface, a floor surface, etc. of a structure to reinforce it. In the reinforcement by a coating film, when water or vapor is generated from the structure during construction, pinholes are generated in the coating film. Further, after construction, due to the influence of back pressure, temperature change, etc., water or air flows out from the structure, and water or air locally stays, resulting in peeling or swelling of the coating film and sometimes impairing the aesthetics. Therefore, repair methods for preventing the generation of pinholes and maintaining the aesthetics after construction have been studied.

[0003] For example, Patent Document 1 discloses a coating film structure in which a coating film is constituted by a quick-drying resin sprayed on a coated surface through an underlayer, the underlayer having an adhesive for adhering the coating film to the coated surface and a plurality of solid particulate materials adhered through the adhesive, and a gap allowing the passage of a fluid being formed between adjacent ones of the plurality of solid particulate materials. [[ID= seventeen]]

[0004] Also, a method of attaching a sheet to a structure for reinforcement is known. For example, Patent Document 2 discloses a repair structure for a concrete tank for a liquid or a liquid material, comprising a sheet attached to the surface having a deteriorated concrete portion of the tank and a coating film layer formed by a coating material made of a synthetic resin or a synthetic rubber on the sheet.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

[0006] The structure described in Patent Document 1 allows generated steam and water to move through the gaps between multiple solid granules in the substrate layer, thus preventing the formation of pinholes. Furthermore, it prevents peeling and blistering of the coating film after application, maintaining a good aesthetic appearance. However, the structure described in Patent Document 1 requires preparing a coating substrate by mixing an adhesive with solid granules and applying it to the surface to be painted, forming a substrate layer with gaps between the solid granules. This requires time and skilled techniques. Therefore, there is a risk of variations in quality depending on the worker, and there was room for improvement from the standpoint of workability.

[0007] Furthermore, in structures such as Patent Document 2, which have a coating layer on a sheet, it is necessary to consider the adhesion between the sheet and the coating layer in order to ensure sufficient adhesion between the sheet and the coating layer, and the degree of design freedom was not high.

[0008] Under these circumstances, the object of the present invention is to provide a reinforcing structure, a reinforcing method, and a reinforcing member that can be formed in a short time, have less variation in quality due to the worker, and prevent peeling or blistering of the coating after construction. [Means for solving the problem]

[0009] The inventors of this invention have conducted extensive research to solve the above problems and have found that the following invention is suitable for the above purpose, leading to the present invention. That is, the present invention relates to the following invention.

[0010] The reinforcing structure of the present invention comprises a plate-shaped member fixed to the surface of a structure and a fast-curing resin coating, wherein the plate-shaped member has a plurality of openings penetrating in the thickness direction and comprises a main surface portion arranged to face the structure and a leg portion connecting the main surface portion and the structure, the fast-curing resin coating is formed of a fast-curing resin that fills the interior of the openings of the plate-shaped member and covers the surface of the main surface portion, and there is a space between the main surface portion of the plate-shaped member and the structure.

[0011] In this way, by using plate-shaped members of a specific shape, even if steam is generated during the application of the fast-curing resin, the steam can escape through the space between the main surface of the plate-shaped member and the structure, preventing the formation of pinholes in the fast-curing resin coating. Furthermore, even after application, localized accumulation of water and air can be prevented, thus preventing peeling and blistering of the fast-curing resin coating. In addition, the use of plate-shaped members can improve strength.

[0012] Furthermore, since the fast-curing resin that makes up the fast-curing resin coating is also filled inside the openings of the plate-shaped member, the fast-curing resin coating firmly adheres to the plate-shaped member and is resistant to peeling.

[0013] Here, "rapidly curing resin" refers to a resin that loses its fluidity in less than one minute (for example, between 10 seconds and 1 minute). By using a rapidly curing resin, the resin loses its fluidity before the space between the plate-like member and the surface of the structure is closed, thus allowing a space to be created between the plate-like member and the surface of the structure. The rapidly curing resin is preferably a two-component resin (i.e., a resin that loses its fluidity in less than one minute after the two components are mixed). Examples of rapidly curing resins include polyurea and polyurethane.

[0014] Furthermore, the reinforcing structure of the present invention can also be formed by manufacturing a plate-shaped member in which a fast-curing resin has been sprayed beforehand, before attaching the plate-shaped member to the structure. In this case, at the construction site, the plate-shaped member with the pre-applied fast-curing resin coating can be installed, and the joints and exposed parts of the fixing members can be treated, thus further reducing the working time at the construction site.

[0015] In the reinforcing structure of the present invention, it is preferable that, in a plan view, the plate-like member has a minimum side length of 1 mm to 10 mm of the smallest rectangle circumscribing the opening, and the shortest distance between adjacent openings is 0.5 mm to 30 mm. By having such an opening shape and arrangement, when spraying the fast-curing resin, it is easier for the resin to wrap around to the back surface around the opening of the plate-like member, making it less likely for the fast-curing resin coating to peel off the plate-like member. Furthermore, when drawing the smallest quadrilateral that circumscribes the opening of the plate-like member in a plan view, that quadrilateral may be a square or a rectangle, and the length of the smallest side is the length of one side in the case of a square, and the length of the shorter side in the case of a rectangle.

[0016] Furthermore, in the reinforcing structure of the present invention, it is preferable that the opening of the plate-like member has an elongated shape in plan view, and that it has a first opening and a second opening whose maximum length direction is different from that of the first opening. With such a shape, the fast-curing resin coating can be made less likely to peel off from the plate-like member. Note that the elongated shape means a shape in which the smallest rectangle that circumscribes the opening is a rectangle.

[0017] Furthermore, in the reinforcing structure of the present invention, it is preferable that at least one of the upper and lower opening edges of the plate-shaped member is chamfered with a C-chamfer or R-chamfer. With such a shape, the fast-curing resin coating can be made less likely to peel off from the plate-shaped member.

[0018] Furthermore, in the reinforcing structure of the present invention, the thickness of the main surface portion is preferably 0.5 mm to 8 mm. With such a configuration, the fast-curing resin filled into the openings that penetrate in the thickness direction becomes mechanically resistant to peeling and at the same time provides sufficient bending strength to the main surface portion.

[0019] Furthermore, the reinforcing structure of the present invention may also be configured such that the fast-curing resin is filled between the opening in the main surface portion of the plate-like member and the structure, and a space is provided between the non-opening portion of the main surface portion of the plate-like member and the structure. By adopting such a structure, a stronger reinforcing structure can be achieved.

[0020] Furthermore, the reinforcing structure of the present invention may be configured to include a plurality of plate-like members arranged side by side, wherein the plurality of plate-like members have connecting portions that can be connected to adjacent plate-like members, and are connected to adjacent plate-like members. By adopting such a structure, the connecting portions can also be made stronger.

[0021] The reinforcing member of the present invention comprises a plate-like member having a main surface portion having a plurality of openings penetrating in the thickness direction, leg portions connecting the main surface portion to a structure, and a fast-curing resin coating film formed of a fast-curing resin that fills the interior of the openings in the plate-like member and covers the surface of the main surface portion. With such a reinforcing member, the reinforcing structure of the present invention can be formed simply by applying a resin such as a fast-curing resin to the joints and fixing member portions after attachment to the structure, thereby significantly reducing construction time.

[0022] The method for reinforcing a structure according to the present invention includes a step of fixing a plate-like member having a plurality of openings penetrating in the thickness direction and having a main surface portion arranged to face the structure and a leg portion connecting the main surface portion and the structure to the surface of the structure, and a step of spraying a fast-curing resin onto the plate-like member to fill the openings of the plate-like member with the fast-curing resin and to coat the surface of the main surface portion of the plate-like member. By adopting such a reinforcing method, the reinforcing structure of the present invention can be formed in a short time, and the quality variation by the operator can be reduced. In addition, the occurrence of peeling or swelling of the coating film (fast-curing resin) can be prevented even after construction.

Advantages of the Invention

[0023] According to the present invention, there are provided a reinforcing structure, a reinforcing method, and a reinforcing member that can be formed in a short time, have little quality variation by an operator, and can prevent the occurrence of peeling or swelling of a coating film even after construction.

Brief Description of the Drawings

[0024] [Figure 1] FIG. 1 is an enlarged perspective view of a part of a reinforcing structure according to an embodiment of the present invention, and is a perspective view showing a part removed. [Figure 2] FIG. 2 is an enlarged cross-sectional view of a part of the reinforcing structure shown in FIG. 1. [Figure 3] FIG. 3 is a perspective view of a plate-like member constituting a reinforcing structure according to an embodiment of the present invention, and is a perspective view when viewed from the front surface side. [Figure 4] FIG. 4 is a perspective view of the plate-like member shown in FIG. 3 when viewed from the back surface side. [Figure 5] FIG. 5 is a perspective view showing a reinforcing structure according to an embodiment of the present invention. [Figure 6] FIG. 6 is a perspective view of a reinforcing member according to an embodiment of the present invention, and is a perspective view when viewed from the front surface side. [Figure 7] FIG. 7 is a perspective view of the reinforcing member shown in FIG. 6 when viewed from the back surface side. [Figure 8]Figure 8 is a top view of a reinforcing structure according to another embodiment of the present invention. [Figure 9] Figure 9 is a view of the reinforcing structure shown in Figure 8, with the structural elements removed and viewed from below. [Figure 10] Figure 10 is an enlarged cross-sectional view of a part of the reinforcing structure shown in Figure 8. [Figure 11] Figure 11 is a top view of a reinforcing structure according to another embodiment of the present invention. [Figure 12] Figure 12 is an enlarged cross-sectional view of a part of the reinforcing structure shown in Figure 11. [Figure 13] Figure 13 is a top view of one of the plate-shaped members used to form the reinforcing structure shown in Figure 11. [Figure 14] Figure 14 is a top view of one of the plate-shaped members used to form the reinforcing structure shown in Figure 11. [Figure 15] Figure 15 is a top view of one of the plate-shaped members used to form the reinforcing structure shown in Figure 11. [Figure 16] Figure 16 is a schematic diagram illustrating the fixing portion of the plate-shaped member to the structure and the connection portion with adjacent plate-shaped members. The upper section is an enlarged view from above of area A1 to A4 in Figure 11, and the lower section is an enlarged view from below of area A1 to A4 in Figure 11. [Modes for carrying out the invention]

[0025] The embodiments of the present invention will be described in detail below, but the description of the constituent elements described below is just one example (representative example) of an embodiment of the present invention, and the present invention is not limited to the following unless its gist is changed. In this specification, when the expression "~" is used, it is used to mean an expression that includes the numerical value or physical property value before and after it.

[0026] The reinforcing structure and reinforcing members according to the present invention will be described below with reference to Figures 1 to 16. In the following description, the direction L in Figures 1 to 16 will be described as the length direction, the direction W as the width direction, and the direction T as the thickness direction. Also, common parts in Figures 1 to 16 will be denoted by the same reference numerals and their descriptions will be omitted.

[0027] [Embodiment 1] The reinforcing structure 100 will be described based on Figures 1 to 4. Figure 1 is an enlarged perspective view of a part of the reinforcing structure 100, which is a reinforcing structure according to one embodiment of the present invention, and is a perspective view with a part removed. Figure 2 is an enlarged cross-sectional view of a part of the reinforcing structure 100. The reinforcing structure 100 shown in Figures 1 and 2 comprises a plate-shaped member 20 fixed to the surface of a structure 10 and a fast-curing resin coating 30. A plate-shaped member 20 is arranged on the surface of the structure 10, having a main surface portion 22 that is positioned facing the structure 10 and leg portions 24 that connect the main surface portion 22 and the structure 10. The plate-shaped member 20 is positioned so that the lower end of the leg portion 24 is in contact with the surface of the structure 10 and is fixed to the structure 10 by a fixing member 50, and there is a space 40 between the main surface portion 22 and the structure 10.

[0028] (structure) Examples of structures 10 include concrete structures requiring durability and waterproofing, such as water tanks, wastewater tanks, water storage tanks, pits, tunnels, parking lots, food processing plants, and other buildings. The reinforcing structure 100 is formed at any location on the floor, walls, ceiling, etc., of these structures. For example, it can be applied to the floor, ceiling, roof, interior walls, exterior walls, rooftop, etc., of various buildings.

[0029] (Plate-shaped member) Figure 3 is a perspective view of the plate-shaped member 20, which is a plate-shaped member constituting the reinforcing structure 100, and is a perspective view from the front side. Figure 4 is a perspective view of the plate-shaped member 20 from the back side.

[0030] As shown in Figure 3, the main surface portion 22 of the plate-like member 20 is rectangular in plan view (i.e., the shape of the WL surface). The main surface portion 22 has a thickness (t1 in Figure 2) of 0.5 mm to 8 mm and has multiple openings 26a that penetrate in the thickness direction T, and multiple openings 26b that penetrate in the thickness direction T, but whose maximum length direction is different from that of opening 26a. The openings 26a and 26b are rectangular in plan view, with the long side being 2 mm to 20 mm and the short side being 1 mm to 10 mm. The opening 26a is rectangular in length direction L that is longer in plan view, and the opening 26b is rectangular in width direction W that is longer in plan view. In this way, because the orientation of the maximum length of the openings is not aligned, when spraying polyurea to form the fast-curing resin coating 30, regardless of the direction and angle of movement of the spray gun, at least one of the rectangular openings with a longer length L and the rectangular openings with a longer width W will be reliably filled, resulting in a configuration in which no areas prone to peeling will occur.

[0031] Furthermore, as shown in Figure 4, a surrounding frame 22f is provided around the outer periphery of the main surface portion 22, and grid-like protrusions 22t are provided on the back side of the main surface portion 22 at intervals of 4.5 mm to 100 mm in the length direction L and width direction W. By having the surrounding frame 22f and protrusions 22t in this way, the strength and rigidity of the plate-like member 20 can be improved. In addition, by providing a surrounding frame 22f that is thicker than the thickness of the main surface portion 22, the edges are less likely to lift when the fast-curing resin hardens and shrinks or when there are unevenness on the structure side, and when multiple plates are laid side by side, steps are less likely to form between adjacent plate-like members, making spraying work easier and resulting in a better finished appearance. The openings 26a and 26b are arranged alternately in the length direction L and width direction W, and within each section of the grid-like protrusions 22t, the arrangement is such that two openings 26a and two openings 26b form a rectangle. The shortest distance between adjacent openings is 0.5 mm to 30 mm.

[0032] Furthermore, as shown in Figure 2, the openings 26a and 26b have rounded edges at their upper and lower ends. The rounded edges at the upper ends of the openings 26a and 26b make it easier for the polyurea to fill into the openings, and the rounded edges at the lower ends of the openings 26a and 26b make it easier for the polyurea to wrap around to the back surface 22r around the openings, allowing the fast-curing resin coating 30 to firmly grip the openings 26a and 26b.

[0033] The openings 26a and 26b may have a chamfered shape at the upper and lower edges, or one of the upper and lower edges may have a rounded or chamfered shape. Preferably, both the upper and lower edges have a rounded or chamfered shape, or one edge has a rounded shape and the other edge has a chamfered shape.

[0034] As shown in Figure 4, at the intersections of the grid-like protrusions 22t, and at the intersections of the surrounding frame 22f and the grid-like protrusions 22t, the cross-sectional area (area of ​​the WL surface) is 1 mm². 2 ~100mm 2 A columnar leg portion 24 with a length (t2 in Figure 2) of 0.5 mm to 10 mm is formed. The cross-sectional shape of the leg portion 24 is circular, but is not limited to this and can be any shape such as elliptical, rectangular, or polygonal.

[0035] The cross-sectional area and number of the legs 24 are not particularly limited and are arbitrary, as long as the plate-like members can withstand water pressure and walking pressure, depending on the purpose of the reinforcing structure. In Figure 4, the legs 24 are provided at all intersections of the grid-like protrusions 22t, but as long as the plate-like members can withstand water pressure and walking pressure, the legs may be provided at intervals rather than at all intersections. Also, the spacing of the legs 24 may be equal or not.

[0036] Furthermore, the plate-shaped member 20 is provided with through holes 20H at predetermined intervals that penetrate from the surface to the lower end of the leg portion 24 in the thickness direction. The plate-shaped member 20 can be fixed by inserting fixing members 50, such as countersunk screws or transformer screws, into the through holes 20H and attaching it to the structure 10. By providing the through holes 20H so that they pass through the inside of the leg portion 24, the plate-shaped member 20 can be stably fixed to the structure 10. In addition, by physically fixing the plate-shaped member 20 with the fixing members 50, sufficient fixing strength can be obtained, and the work can be carried out without surface preparation, and the work can be carried out quickly after simple cleaning. As a result, the work time can be greatly reduced, and the working environment can be improved as no dust is generated during work.

[0037] The shape of the through-hole 20H can be appropriately designed depending on the type of fixing member 50. For example, if the through-hole 20H is made into a shape in which a frustoconical shape and a cylinder that widen toward the surface side of the main surface portion 22 are connected in the axial direction, and the fixing member 50 is fixed using a countersunk screw, the unevenness of the fast-curing resin coating 30 can be suppressed, and the fixing member 50 can be made less likely to come off.

[0038] The plate-shaped member 20 can be made of plastics such as ABS, PE, PP, and polyvinyl chloride, or metals such as iron and its alloys (e.g., stainless steel).

[0039] Depending on the size of the plate-shaped members 20, the reinforcing structure 100 may have multiple plate-shaped members 20. Typically, the size of the plate-shaped members 20 (the size of the WL surface of the main surface portion 22) is small compared to the area of ​​the location where the reinforcing structure 100 is installed (floor, wall, or ceiling). Therefore, as shown in Figure 5, the reinforcing structure 100 is configured to include multiple plate-shaped members 20 arranged side by side and a fast-curing resin coating 30. Note that in Figure 5, the openings of the plate-shaped members 20 are omitted from the illustration. In addition, plate-shaped members 20 of different sizes can be combined and used according to the shape of the installation location. To provide the reinforcing structure 100 to the entire reinforcement area of ​​the structure 10, the size of the plate-shaped members 20 is adjusted as appropriate at corners and other parts of the structure 10.

[0040] (Fast-curing resin coating) The fast-curing resin coating 30 is a film made of polyurea that fills the interior of the openings 26a and 26b of the plate-shaped member 20 and covers the surface of the main surface portion 22. Polyurea is one of the suitable fast-curing resins because it has excellent waterproofing and conformability. The fast-curing resin coating 30 is a film without holes when viewed from above. Furthermore, the fast-curing resin coating 30 wraps around the back surface 22r around the openings of the plate-shaped member 20, and this wrap-around acts as a catch, making it difficult for the fast-curing resin coating 30 to come off.

[0041] Furthermore, the fast-curing resin coating 30 is formed so as not to block the space 40 between the main surface of the plate-shaped member 20 and the structure 10. In other words, the space 40 is the part that is not filled with polyurea. This space 40 can function as a path for water, air, or steam to flow.

[0042] (First reinforcement method) The reinforcing structure 100 shown in Figure 1 can be formed by a method comprising the steps of fixing the plate-shaped member 20 to the surface of the structure 10 (S1-1) and spraying polyurea onto the plate-shaped member 20 to fill the openings 26a and 26b of the plate-shaped member 20 with polyurea and covering the surface of the main surface portion 22 (S1-2).

[0043] In step (S1-1), as described above, the plate-shaped member 20 is positioned so that the lower end of the leg portion 24 is in contact with the surface of the structure 10, and is fixed to the structure 10 by fixing members 50 such as screws inserted into through holes 20H provided in the plate-shaped member 20. If the size of the plate-shaped member 20 (size of the WT surface of the main surface portion 22) is smaller than the area of ​​the reinforcement location on the structure 10, multiple plate-shaped members 20 are arranged side by side to cover the entire area to be reinforced. By physically fixing the plate-shaped member 20 with the fixing members 50, it can be securely fixed to the structure 10 without the need for surface preparation. Furthermore, the presence of the leg portion 24 of the plate-shaped member 20 makes it possible to create a space 40 that functions as a path for water, air, and steam to flow without variations in quality due to the worker.

[0044] In step (S1-2), polyurea is sprayed onto the plate-shaped member 20 to fill the openings 26a and 26b of the plate-shaped member 20 with polyurea, and the surface of the main surface portion 22 is covered with it to form a fast-curing resin coating 30. If the surface of the structure 10 is covered with multiple plate-shaped members 20, polyurea is also sprayed onto the joints between the plate-shaped members 20 to form a fast-curing resin coating 30 over the entire surface.

[0045] Polyurea filling can be carried out by mixing liquid A, which contains polyisocyanate, and liquid B, which contains polyamine, immediately before filling using a static mixer or collision mixing. When liquid A and liquid B are mixed, it is preferable to use a polyurea that starts curing within 10 seconds and loses its fluidity within 1 minute (a pot life of 1 minute or less) and to carry out the filling by spraying. By using a polyurea that cures in a few seconds and spraying it so that the openings 26a and 26b are filled, a fast-curing resin coating 30 can be formed without blocking the space 40 between the main surface portion 22 of the plate-shaped member 20 and the structure 10.

[0046] (Second reinforcement method) The reinforcing structure 100 can also be formed using a plate-shaped member 20 to which polyurea has been pre-sprayed. The reinforcing member 200 shown in Figures 6 and 7 is an example of a reinforcing member that can be used to form the reinforcing structure 100. Figure 6 is a perspective view of the reinforcing member 200, taken from the front side. Figure 7 is a perspective view of the reinforcing member 200 taken from the back side.

[0047] The reinforcing member 200 comprises a plate-like member 20 having a main surface portion 22 having a plurality of openings 26a, 26b penetrating in the thickness direction, and leg portions 24 connecting the main surface portion 22 to the structure 10, and a fast-curing resin coating film 30 that fills the interior of the openings 26a, 26b of the plate-like member 20 and covers the surface of the main surface portion 22. The reinforcing member 200 is provided with through holes 28H at predetermined intervals for inserting fixing members for fixing to the structure 10. The through holes 28H have a shape in which a frustoconical shape and a cylinder that expand in diameter toward the surface side are connected in the axial direction, and are provided so as to pass through the interior of the leg portions 24 of the plate-like member 20.

[0048] The reinforcing member 200 is attached to the structure 10 by the fixing member 50 inserted into the through hole 28H, and the reinforcing structure 100 is formed by applying polyurea to the portion of the fixing member 50 that is exposed on the surface of the reinforcing member 200. By using the reinforcing member 200, the openings 26a and 26b of the plate-shaped member 20 are pre-filled with polyurea, so the construction time required for spraying polyurea can be significantly reduced.

[0049] Furthermore, if the size of the reinforcing member 200 (area of ​​the main surface portion 22) is smaller than the area of ​​the reinforcement location on the structure 10, multiple reinforcing members 200 are arranged and fixed together to cover the entire area of ​​interest. Next, the reinforcing structure 100 is formed by applying polyurea to the portion of the fixing member 50 that is exposed on the surface of the reinforcing member 200 and to the joints between the plate-like members 20.

[0050] The resin used to cover the exposed portion of the fixing member 50, or the exposed portion and joint portion of the fixing member 50 (resin for covering the exposed portion and joint portion), is not limited to polyurea. While a fast-curing resin is preferable for the resin covering the exposed portion and joint portion, it does not have to be a fast-curing resin as it occupies a small proportion of the surface. Furthermore, the method of applying the resin to the exposed portion and joint portion is not particularly limited; spraying, or coating using a brush or roller, can be used. Therefore, after attaching the reinforcing member 200 to the structure 10, polyurethane, epoxy, silicone, etc., may be sprayed or coated onto the exposed portion of the fixing member 50, or the exposed portion and joint portion of the fixing member 50, instead of polyurea, to form the reinforcing structure 100.

[0051] [Other embodiments of the reinforcing structure of the present invention] Furthermore, the reinforcing structure of the present invention is not limited to reinforcing structure 100, and can be modified as appropriate.

[0052] The plate-like member 20 has a grid-like structure on its back surface, with openings of a predetermined pattern within each section. However, the size and thickness of the main surface and legs of the plate-like member constituting the reinforcing structure of the present invention, as well as the shape, size, and arrangement of the openings, are not limited to the structure of the plate-like member 20. The plate-like member may also have a mesh structure. Furthermore, the plate-like member may have a structure in which slits, which are openings, are formed at predetermined intervals along any direction (such as the length direction, width direction, or diagonal direction).

[0053] Furthermore, the plate-like members constituting the reinforcing structure of the present invention may be configured without enclosure frames or protrusions, and the legs are not limited to those provided at the intersections of protrusions.

[0054] From the viewpoint of preventing peeling of the fast-curing resin coating, it is preferable that the plate-like member has an elongated opening, such as a rectangle or an ellipse. For example, in a plan view, it is preferable that the length of the short side of the smallest rectangle circumscribing the opening of the plate-like member is 1 mm to 10 mm, and the length of the long side is 2 mm or more.

[0055] The shortest distance between each opening in the plate-shaped member and adjacent openings is preferably 0.5 mm to 30 mm, and more preferably 1 mm to 25 mm.

[0056] From a strength standpoint, it is preferable that the thickness (t1) of the main surface portion of the plate-like member is 0.5 mm to 8 mm or 1 mm to 7 mm.

[0057] The length of the legs of the plate-shaped member should be such that a space can be created between the main surface and the structure, but for example, 0.5 mm to 10 mm or 1 mm to 8 mm is preferred. By using such a length, the space between the main surface of the plate-shaped member and the structure is less likely to be blocked when spraying the fast-curing resin, and a discharge path for water and air can be easily secured.

[0058] The reinforcing structure of the present invention only needs to have a structurally formed space between the main surface of the plate-shaped member and the structure by the legs of the plate-shaped member, and is not limited to a structure in which a space is formed between the opening filled with fast-curing resin in the main surface of the plate-shaped member and the structure, and between the non-opening of the main surface of the plate-shaped member and the structure. In the reinforcing structure of the present invention, fast-curing resin may be filled between the opening filled with fast-curing resin in the main surface of the plate-shaped member and the structure, and a space may be formed between the non-opening of the main surface of the plate-shaped member and the structure.

[0059] By reducing the ratio of the size of the opening in the plate-like member to the distance from the structure to the main surface, the viscosity of the fast-curing resin causes the resin to wrap around the back surface of the opening in the plate-like member, fixing it in place and making it easier to form a structure with space between the opening and the structure, and between the non-opening parts and the structure. If the length of the short side of the smallest rectangle that circumscribes the opening in the plate-like member when viewed from above is X mm, and the distance from the surface of the structure to the main surface of the plate-like member is Y mm, then, depending on the curing speed and viscosity of the fast-curing resin, in order to form a structure with space between the opening and the structure, and between the non-opening parts and the structure, X / Y is preferably 0.1 or more, more preferably 0.3 or more, even more preferably 0.5 or more, preferably less than 1.5, more preferably 1.4 or less, and even more preferably 1.3 or less.

[0060] On the other hand, by increasing the ratio of the size of the opening in the plate-like member to the distance from the structure to the main surface, the fast-curing resin flows between the surface of the structure and the opening in the plate-like member, filling the space between the opening and the structure with the fast-curing resin, and making it easier to form a structure with a space between the non-opening and the structure. If X and Y are defined as described above, although it also depends on the characteristics of the fast-curing resin such as the curing speed and viscosity, in order to form a structure with a space between the non-opening and the structure, X / Y is preferably 1.5 or more, more preferably 1.8 or more, even more preferably 2.0 or more, preferably 4.5 or less, more preferably 4.0 or less, and even more preferably 3.5 or less.

[0061] In the reinforcing structure 100, the fast-curing resin coating 30 is formed of polyurea, but the fast-curing resin is not limited to this. The fast-curing resin can be any resin that loses its fluidity in 1 minute or less, and polyurethane or the like may be used.

[0062] The reinforcing structure 100 is a structure in which the plate-shaped member 20 is fixed by a fixing member 50, but the reinforcing structure of the present invention is not limited to a structure in which the plate-shaped member is fixed to the surface of a structure by a fixing member. That is, in the reinforcing structure of the present invention, the method of fixing the plate-shaped member to the structure is not limited to a fixing member. For example, the plate-shaped member may be fixed to the structure using an adhesive or double-sided tape.

[0063] In a structure comprising multiple plate-like members, the multiple plate-like members may simply be arranged side by side, or the plate-like members may have connecting portions that can connect to adjacent plate-like members, and be connected to adjacent plate-like members.

[0064] [Other embodiments of the reinforcing member of the present invention] Furthermore, the reinforcing member of the present invention is not limited to the reinforcing member 200, and its design can be modified as appropriate. The plate-shaped member constituting the reinforcing member of the present invention is the same as the plate-shaped member constituting the reinforcing structure of the present invention, and is not limited to the plate-shaped member 20. Although the reinforcing member 200 has a structure with through holes, the reinforcing member of the present invention may not have through holes. For example, the reinforcing member of the present invention may be attached to a structure by passing a fixing member through a fast-curing resin coating, or by using an adhesive or double-sided tape to attach the reinforcing member of the present invention to a structure.

[0065] For reinforcing areas subjected to greater external forces, it is preferable to have a structure in which there is a space between the non-opening part of the plate-shaped member and the surface of the structure, and resin is filled between the resin-filled opening of the plate-shaped member and the structure. Such reinforcing structures will be described below with reference to Figures 8 to 16.

[0066] [Embodiment 2] The reinforcing structure 110 will be described based on Figures 8 to 10. Figure 8 is a top view of the reinforcing structure 110, which is a reinforcing structure according to another embodiment of the present invention, and the right half of Figure 8 is shown with the fast-curing resin coating removed. Figure 9 is a bottom view of the reinforcing structure 110 with the structural elements removed, and the right half of Figure 9 is shown with the fast-curing resin coating removed, corresponding to Figure 8. Figure 10 is an enlarged cross-sectional view of a part of the reinforcing structure 110.

[0067] The reinforcing structure 110 shown in Figures 8 to 10 comprises a plate-shaped member 60 fixed to the surface of the structure 10 and a fast-curing resin coating 30A. The plate-shaped member 60 consists of a rectangular perforated panel 62 in plan view and a spacer 64 provided on the back surface of the perforated panel 62.

[0068] The main surface, a perforated panel 62, is a plate having multiple circular openings 62H that penetrate in the thickness direction T. The thickness of the perforated panel 62 (t3 in Figure 10) is 1 mm to 3 mm, and the pitch (distance from the center of one opening to the center of an adjacent opening) is 5 mm to 12 mm. The spacers 64 provided on the back surface of the perforated panel 62 are the leg parts. The spacers 64 are elongated members with a width of about 20 mm to 30 mm and are arranged along each side of the perforated panel 62. Furthermore, the diameter of the opening 62H (the length of the shortest side of the smallest rectangle circumscribing the opening) is 1mm to 10mm, 2mm to 8mm, or 3mm to 6mm, and the thickness of the spacer 64 (t4 in Figure 10) is 0.5mm to 10mm, 0.5mm to 6mm, or 1mm to 3mm, so the ratio of "diameter of the opening 62H of the punching panel 62" / "thickness of the spacer 64" is 1.5 to 4.5.

[0069] Furthermore, the plate-shaped member 60 is provided with mounting through holes 60H at predetermined intervals that penetrate the perforated panel 62 and the spacer 64. The spacer 64 is positioned so as to be in contact with the surface of the structure 10, and fixing members 52 such as countersunk screws or transformer screws are inserted into the through holes 60H to secure it to the structure 10.

[0070] The spacer 64 can be fixed to the perforated panel 62 using screws, adhesive, welding, or other methods, depending on its material. From the viewpoint of strength and joint strength, it is preferable that the perforated panel 62 and the spacer 64 be made of metal such as iron and its alloys (for example, stainless steel).

[0071] The fast-curing resin coating 30A is a film formed of polyurea that fills the interior of the opening 62H of the perforated panel 62 and the space between the opening 62H and the structure 10, and also covers the surface of the perforated panel 62, and is a film that is perforated in plan view. In the reinforcing structure 110, resin is filled between the resin-filled opening 62H and the structure 10, and an unfilled space 40A is formed between the non-opening 62NH of the plate-like member 60 and the structure 10 (see Figure 10). However, since the unfilled space 40A is continuous, this space can function as a path for water, air, and steam to flow. Thus, as long as a continuous space through which water, air, and steam can flow is formed between the main surface of the plate-like member and the structure, a portion of the space between the main surface of the plate-like member and the structure may be filled with resin.

[0072] The reinforcing structure 110 can be formed in a similar manner to the reinforcing structure 100, but it is preferable to form it using the first reinforcing structure described above. Specifically, it is preferable to form the reinforcing structure 110 by fixing a plate-shaped member 60 to the surface of the structure 10, spraying polyurea onto the plate-shaped member 60 to fill the opening 62H of the plate-shaped member 60 with polyurea, and covering the surface of the punching panel 62, which is the main surface. Because the opening 62H of the punching panel 62 is large relative to the distance between the punching panel 62 and the structure 10, spraying polyurea so that it reaches the surface of the structure below the opening 62H fills the space between the opening 62H and the structure 10. However, because the polyurea hardens quickly, it remains around the opening 62H, and the space between the punching panel 62 and the structure 10 is not completely closed. As shown in Figure 10, a space 40A is formed between the non-opening 62NH of the punching panel 62 and the structure 10.

[0073] [Embodiment 3] The reinforcing structure 120 will be described based on Figures 11 to 16. Figure 11 is a top view of the reinforcing structure 120, which is a reinforcing structure according to another embodiment of the present invention, with a portion of the fast-curing resin coating removed. Figure 12 is an enlarged cross-sectional view of a portion of Figure 11, with some parts omitted. Figures 13 to 15 are top views of the plate-like members used to form the reinforcing structure 120, with Figure 13 being a top view of plate-like member 60a, Figure 14 being a top view of plate-like member 60b, and Figure 15 being a top view of plate-like member 60c. Figure 16 is a schematic diagram for explaining the fixing portion of the plate-like members to the structure and the connection portion with adjacent plate-like members, with the upper section showing an enlarged top view of area A1 to A4 in Figure 11, and the lower section showing an enlarged bottom view of area A1 to A4 in Figure 11. Note that in Figures 11 and 13-15, the openings in the plate-like members are omitted from the description.

[0074] The reinforcing structure 120 shown in Figures 11 and 12 comprises plate-like members 60a, 60b, and 60c, and a fast-curing resin coating 30B. The fast-curing resin coating 30B is formed of a fast-curing resin that fills the interior of the openings in the plate-like members 60a, 60b, and 60c and the space between the openings and the structure 10, and also covers the surface of the plate-like members 60a, 60b, and 60c. In addition, a space 40B that is not filled with resin is formed between the non-opening parts of the plate-like members 60a, 60b, and 60c and the structure 10. The space 40B is open and functions as a path for water, air, and steam to flow.

[0075] In the reinforcing structure 120, each plate-like member is a member in which multiple elongated metal spacers (legs) are fixed to the back side of a rectangular metal perforated panel (main surface) in a plan view. Each perforated panel has multiple circular openings that penetrate in the thickness direction.

[0076] As shown in Figure 13, the plate-shaped member 60a is a member to which four spacers are fixed to the back side of the perforated panel 62a. Spacers 64a, 64a, 64a are fixed along three of the four sides of the perforated panel 62a when viewed from above, at an inward position at a predetermined distance from each side, and spacer 64ab is fixed along the remaining side so that a portion of it protrudes from the side. In addition, mounting through holes 66 are provided at predetermined intervals that penetrate the perforated panel 62a and the spacers 64a, 64a, 64a. When spacer 64ab is placed next to the plate-shaped member 60b, through holes 66as are provided at predetermined intervals that communicate with the through holes 66bp (see Figures 12 and 16) provided in the perforated panel 62b of the plate-shaped member 60b, and function as a connecting part that can be connected to an adjacent plate-shaped member.

[0077] As shown in Figure 14, the plate-shaped member 60b is a member to which three spacers are fixed on the back side of the perforated panel 62b. Spacers 64b, 64b are fixed along two of the four sides of the perforated panel 62b when viewed from above, at a predetermined distance inward from each side, and spacer 64bc is fixed along one side, with a portion of it protruding from the side. In addition, mounting through holes 66 are provided at predetermined intervals, passing through the perforated panel 62b and the spacers 64b, 64b. The spacer 64bc has through holes 66bs at predetermined intervals that communicate with through holes 66cp provided in the perforated panel 62c of the plate-shaped member 60c when placed next to the plate-shaped member 60c, and on the inside of the other side of the perforated panel 62b (the side where the spacer is not fixed), there are through holes 66bp at predetermined intervals that communicate with through holes 66as provided in the spacer 64ab of the plate-shaped member 60a when placed next to the plate-shaped member 60a, and these each function as connecting parts that can be connected to adjacent plate-shaped members.

[0078] As shown in Figure 15, the plate-shaped member 60c is a member to which three spacers are fixed on the back side of the perforated panel 62c. Spacers 64c, 64c, and 64c are fixed along three of the four sides of the perforated panel 62c when viewed from above, at predetermined distances inward from each side. Mounting through holes 66 are provided at predetermined intervals, penetrating the perforated panel 62c and the spacers 64c, 64c, and 64c. On the inside of the other side of the perforated panel 62c (the side to which no spacers are fixed), through holes 66cp are provided at predetermined intervals, communicating with the through holes 66bs provided in the spacers 64bc of the plate-shaped member 60b when placed next to the plate-shaped member 60b, and function as connecting parts that can be connected to adjacent plate-shaped members.

[0079] The thickness of the perforated panels 62a, 62b, and 62c, the size of the openings, and the width and thickness of the spacers 64a, 64ab, 64b, 64bc, and 64c are the same as those of the plate-like member 60. The placement of the spacers and the spacing of the mounting through holes are designed appropriately depending on the size of the perforated panels 62a, 62b, and 62c, but for example, the spacers can be placed along each side such that the distance from each side to the longitudinal side of the spacer is about 10 mm to 20 mm in a plan view. Also, if the length of one side of the perforated panel is about 400 mm to 1000 mm, the through holes 66 can be provided at intervals of about 100 mm to 120 mm.

[0080] In addition, spot welds 70 (see Figure 16) are provided near both ends of each spacer and in two locations near each through-hole, and each punching panel and each spacer are welded together via the spot welds 70.

[0081] In the reinforcing structure 120, the plate-shaped members 60a, 60b, and 60c are arranged side by side, with the spacer 64ab of plate-shaped member 60a connected to the perforated panel 62b of plate-shaped member 60b, and the spacer 64bc of plate-shaped member 60b connected to the perforated panel 62c of plate-shaped member 60c, and are fixed to the structure 10 by fixing members 52 inserted into each through-hole (Figures 11, 12, and 16).

[0082] In forming the reinforcing structure 120, first, plate-shaped members 60a and 60b are arranged side by side so that their through holes 66as and 66bp overlap, and fixing members 52 are inserted into each through hole 66 and the communication hole between through hole 66as and through hole 66bp to fix them to the structure 10. Next, plate-shaped members 60b and 60c are arranged side by side so that their through holes 66bs and 66cp overlap, and fixing members 52 are inserted into each through hole 66 and the communication hole between through hole 66bs and through hole 66cp to fix them to the structure 10. Then, a fast-curing resin is sprayed so that it reaches the surface of the structure below the openings of the plate-shaped members 60a, 60b, and 60c, filling the openings of the plate-shaped members 60a, 60b, and 60c with the fast-curing resin and covering the surfaces of the plate-shaped members 60a, 60b, and 60c. This forms the reinforcing structure 120.

[0083] In reinforcement structures 110 and 120, the shape of the opening in the perforated panel is circular, but it is not limited to this and may be elliptical, polygonal, or otherwise arbitrary. Also, although multiple spacers are arranged along each side of the perforated panel which is the main surface, the number and arrangement of spacers are arbitrary as long as the main surface can be positioned away from the surface of the structure. Depending on the size of the perforated panel and the arrangement of the spacers, from the viewpoint of strength and production efficiency of plate-shaped members, it is preferable to use elongated members such as flat bars for each spacer, and in plan view, the width is preferably 20 mm to 30 mm and the length is preferably 65% ​​to 99% or 75% to 98% of the length of each side of the perforated panel which is the main surface.

[0084] Structures such as reinforcing structure 110 and reinforcing structure 120, in which resin is filled between the resin-filled opening of the plate-shaped member and the structure, and a space between the non-opening of the plate-shaped member and the structure where resin is not filled, can provide higher strength and are therefore suitable as reinforcing structures for places subjected to large external forces, such as rooftop parking lots and factory floors where forklifts operate. [Industrial applicability]

[0085] This invention can be used to reinforce structures such as water tanks, pits, and rooftop parking lots. [Explanation of symbols]

[0086] 10 Structures 20, 60, 60a, 60b, 60c Plate-shaped members 20H, 28H, 60H, 66, 66as, 66bp, 66bs, 66cp through hole 22 Main surface 22f Enclosed frame 22t protrusion 24 Legs 26a, 26b, 62H opening 30, 30A, 30B Fast curing resin coating 40, 40A, 40B space 50, 52 Fixing members 62, 62a, 62b, 62c Perforated Panel 62NH Non-opening part 64, 64a, 64ab, 64b, 64bc, 64c spacers 100, 110, 120 Reinforcement Structure 200 Reinforcement members

Claims

1. This reinforcing structure comprises a plate-like member fixed to the surface of a structure and a fast-curing resin coating. The plate-like member has a plurality of openings penetrating in the thickness direction and comprises a main surface portion arranged to face the structure and a leg portion connecting the main surface portion and the structure. The fast-curing resin coating is formed by a fast-curing resin that fills the interior of the opening of the plate-shaped member and covers the surface of the main surface portion. The aforementioned fast-curing resin is a resin that loses its fluidity in a time of 1 minute or less. A reinforcing structure having a space between the main surface portion of the plate-like member and the structure.

2. The aforementioned plate-shaped member is In a plan view, the shortest side length of the smallest rectangle circumscribing the opening is 1 mm to 10 mm. The reinforcing structure according to claim 1, wherein the shortest distance between adjacent openings is 0.5 mm to 30 mm.

3. The aforementioned opening has an elongated shape when viewed from above. The reinforcing structure according to claim 1 or 2, having a first opening and a second opening whose maximum length direction is different from that of the first opening.

4. The reinforcing structure according to claim 1 or 2, wherein at least one of the upper and lower opening edges of the opening is chamfered with a C-chamfer or R-chamfer.

5. The reinforcing structure according to claim 1 or 2, wherein the thickness of the main surface portion is 0.5 mm to 8 mm.

6. The reinforcing structure according to claim 1 or 2, wherein the fast-curing resin is filled between the opening in the main surface portion of the plate-like member and the structure, and there is a space communicating between the non-opening portion of the main surface portion of the plate-like member and the structure.

7. It comprises a plurality of the aforementioned plate-like members arranged in a row, The reinforcing structure according to claim 1 or 2, wherein a plurality of the plate-like members have connecting portions that can be connected to adjacent plate-like members, and are connected to adjacent plate-like members.

8. A plate-shaped member comprising a main surface portion having multiple openings penetrating in the thickness direction, and leg portions connecting the main surface portion to a structure, A reinforcing member comprising: a fast-curing resin coating film formed of a fast-curing resin that fills the interior of the opening of the plate-shaped member and covers the surface of the main surface portion.

9. A plate-shaped member having multiple openings penetrating in the thickness direction and a main surface portion positioned facing the structure, and leg portions connecting the main surface portion and the structure, is fixed to the surface of the structure. The process includes spraying a fast-curing resin onto the plate-like member to fill the openings of the plate-like member with the fast-curing resin and to cover the surface of the main surface portion of the plate-like member. Methods for reinforcing structures.

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