Reinforcement structures for building structures

Abstract

To provide a reinforcing structure for a building structure, which can be sufficiently reinforced even when made of thin steel plates less than 3 mm thick as well as ordinary steel plates.SOLUTION: There is provided a reinforcing structure for a building structure made of a steel plate, in which a steel material or a reinforcing plate material of the other portion is bonded to a portion of the steel plate via an adhesive. Further there is provided a reinforcing structure for a building structure made of a steel plate, in which the steel plate and the steel material or the reinforcing plate material of the other portion are fastened together using a fastening member, and an auxiliary plate is further attached to the steel material or the reinforcing plate material of the other portion of the steel plate via an auxiliary plate adhesive. In this case, the steel plate and the steel material or the reinforcing plate material of the other portion may be further bonded together via an adhesive.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a reinforcement structure for an architectural structure using steel plates, and more specifically to a reinforcement structure for an architectural structure that can be reinforced according to the reinforcement purpose using a simple and easy construction method. [Background technology]

[0002] BACKGROUND ART Steel materials are used in a variety of architectural structures, and such steel materials are used in a variety of components, including structural materials such as pillars and beams, as well as base materials for walls and floors. Here, architectural structures using steel, especially those using thin steel with a thickness of 10 mm or less, are widely used because they can be constructed cheaply and in a short time and have sufficient strength for practical use. However, there are problems with strength in emergencies such as earthquakes and with a decrease in strength over time, so methods for strengthening their strength have been proposed. For example, although not limited to thin structures, Patent Document 1 (Japanese Patent Publication No. 6474071) proposes an earthquake-resistant reinforcement method and earthquake-resistant reinforced building that can be constructed in a shorter time and at a lower cost. Specifically, the proposed reinforcement method involves applying adhesive to the guide pins and the surface of a steel frame member having a surface to which multiple guide pins and multiple spacers are fixed, and then inserting and pressing the guide pins against concrete having a surface that has holes formed in advance into which the guide pins of the steel frame member can be inserted, thereby bonding the concrete and the steel frame member. Similarly, although not limited to thin materials, Patent Document 2 (Japanese Patent Publication No. 6114012) proposes an adhesive reinforcement method that can ensure a larger adhesive area at the adhesive joint when adhering an adherend to a beam or column of a steel-framed building. Specifically, the proposed adhesive method is for adhering an adherend to a steel beam that constitutes a steel-framed building, and includes an adherend covering step in which the adherend is covered via a space layer on at least a portion of each of multiple outer surfaces of the steel beam, and an adhesive filling step in which, after the adherend covering step, the space layer is filled with epoxy resin to adhere the adherend to the steel beam. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6474071 [Patent Document 2] Patent No. 6114012 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the above-mentioned proposed reinforcement methods have not yet been able to sufficiently reinforce steel building structures, and the reinforcing effect is particularly insufficient for building structures using thin steel plates. In recent years, the thickness of thin steel plates has generally been less than 3 mm, but there is a trend toward thinner steel plates, less than 1 mm, being used for ceiling and wall underlayment materials. However, the above-mentioned proposed methods are particularly insufficient in reinforcing the reinforcing effect of thin steel plates of this thickness.

[0005] Therefore, an object of the present invention is to provide a reinforcing structure for architectural structures that can be reinforced to a sufficient strength even when made from thin steel plates less than 3 mm thick, as well as ordinary steel plates. [Means for solving the problem]

[0006] As a result of extensive research into solving the above problems, the inventors of the present invention have found that the contact points between the steel sheets are made of an adhesive. By using adhesive, We have found that when fastening with screws, sufficient strength is improved even when using thin steel plates. Further careful consideration The present invention has been completed. That is, the present invention provides the following inventions. 1. A reinforcement structure for an architectural structure made using steel plates, A reinforced structure in which a steel material or a reinforcing plate material of another portion is bonded to a portion of the steel plate via an adhesive. 2. A reinforcement structure for an architectural structure made using steel plates, the steel plate and the steel material of the other portion or the reinforcing plate material are fastened together using a fastening member, A reinforcing structure in which an auxiliary plate is further attached to the steel material at a location other than the steel plate or the reinforcing plate material via an adhesive for auxiliary plate. 3. A reinforcing structure according to 2, wherein the steel plate and the steel material of the other portion or the reinforcing plate material are further bonded via an adhesive. 4. The reinforced structure according to item 2, or 2, wherein the thickness of the steel plate to be reinforced is 0.4 to 8.0 mm. 5. The reinforced structure according to 1 or 3, wherein the adhesive is an acrylic adhesive or an epoxy adhesive, and the viscosity of the acrylic adhesive is 1 to 100 Pas, and the viscosity of the epoxy adhesive is 10 to 150,000 Pas. [Effects of the Invention]

[0007] The reinforced structure of the architectural structure of the present invention is sufficiently reinforced even when it is made of thin steel plates less than 1 mm thick, let alone ordinary steel plates. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view showing an embodiment of a reinforcing structure for an architectural structure of the present invention formed using thin steel plates. [Figure 2] FIG. 2 is a diagram showing the main part of one embodiment of the present invention, where (a) is a side view, (b) is a front view, and (c) is a view seen from the arrow in (b). [Figure 3] FIG. 3 is a diagram showing a schematic view of a main part of one embodiment of the present invention, where (a) is a side view, (b) is a front view, and (c) is a view seen in the direction of an arrow in (b). [Figure 4] FIG. 4 is a diagram showing a schematic view of a main part of one embodiment of the present invention, where (a) is a side view, (b) is a front view, and (c) is a view seen from the arrow in (b). [Figure 5] FIG. 5 is a diagram showing a schematic view of a main part of one embodiment of the present invention, where (a) is a side view, (b) is a front view, and (c) is a view seen from the arrow in (b). [Figure 6]FIG. 6 is a diagram showing a schematic view of the main part of another embodiment of the present invention, where (a) is a side view, (b) is a front view, and (c) is a view seen from the arrow in (b). [Figure 7] FIG. 7 is a diagram schematically illustrating a main part of another embodiment of the present invention, and is a perspective view showing an anchor bolt joint portion of a wall panel. [Figure 8] FIG. 8 is a diagram schematically showing the main part of another embodiment of the present invention, and is a perspective view showing a plywood joint of a wall panel. [Figure 9] FIG. 9 is a diagram schematically showing the main part of another embodiment of the present invention, and is a perspective view showing an example in which it is applied to a joint. [Figure 10] FIG. 10 is a diagram showing a schematic view of the main part of another embodiment of the present invention, and both (a) and (b) are perspective views showing an example of a structure using a gusset plate. [Figure 11] FIG. 11 is a diagram showing a schematic view of the main part of another embodiment of the present invention, showing an example in which the present invention is applied to a roof framing member. [Figure 12] FIG. 12 is a diagram showing a schematic view of the main part of another embodiment of the present invention, showing an example in which it is applied to floor joists. [Figure 13] FIG. 13 is a perspective view that schematically shows an outline of an example in which the main part of another embodiment of the present invention is applied to joining diagonal ceiling members. [Figure 14] 14(a) to 14(c) are perspective views that schematically show the main parts of another embodiment of the present invention. [Explanation of symbols]

[0009] 1 Building structure, 3 C-shaped steel, 5 Horizontal frame material, 7 Beam, 8 Ceiling, 9 Wall panel, 10 Reinforcement structure, 11 Adhesive, 15 Reinforcement plate material, 13 Screw material DETAILED DESCRIPTION OF THE INVENTION

[0010] The present invention will now be described in further detail. <Architectural structures> The reinforcing structure for an architectural structure of this embodiment is a reinforcing structure for an architectural structure made of steel plates. In this embodiment, the architectural structure 1 is formed using thin steel plates as shown in Fig. 1, and is composed of structural materials such as columns or vertical frame members (usually C-shaped steel is used, so hereinafter C-shaped steel will be referred to as 3) 3, horizontal frame members 5, beams 7, and wall panels 9, just like a normal building. [Steel plate] The architectural structure of this embodiment is made of steel plates. The structural materials used, i.e., the steel plates used for columns, horizontal frames, beams, etc., can be any steel plate typically used in architectural structures, but are preferably thin steel plates and materials used in light-gauge steel frame construction (hereinafter, collectively referred to as "thin steel plates"). This is because such thin steel plates are particularly in need of reinforcement. Their thickness is typically, specifically, 0.4 to 8.0 mm, and preferably 0.4 to 4.5 mm (i.e., steel plates with a thickness referred to as "thin steel plates" in the industry) because this maximizes the strength reinforcement effect of the present invention. That is, all of the following examples use thin steel plates within this thickness range. Steel plates with a thickness of less than 0.4 mm are difficult to use as structural materials, and steel plates with a thickness of more than 8.0 mm are difficult to join with screws, so it is preferable to keep the thickness within the above range. The material for the thin steel sheet may be iron steel sheet such as hot-rolled steel, hot-rolled steel sheet, cold-rolled steel sheet, electrogalvanized steel sheet, hot-dip galvanized steel sheet, or electroplated steel sheet; stainless steel sheet such as SUS304 or SUS403; aluminum, or the like.

[0011] [Specific Embodiments] Next, four modified examples of reinforcement structures using a C-shaped steel beam as the steel material and a C-shaped steel beam as the steel material or reinforcing plate material in other locations (i.e., using two C-shaped steel beams) will be described with reference to Figures 2 to 5 as embodiments of the reinforcement structure for architectural structures of the present invention. Figures 2 to 5 show the reinforcement structures of each embodiment. Figure 2 shows a configuration using only adhesive, Figure 3 shows a configuration combining adhesive and fastening members, Figure 4 shows a configuration combining adhesive, fastening members, and reinforcing plates, and Figure 5 shows a configuration combining fastening members and reinforcing plates without using adhesive. Each of these is explained below. In the reinforcing structure 10 shown in FIG. 2, an adhesive 11 is applied to a portion of a C-shaped steel beam 3 serving as a steel plate, and the C-shaped steel beam 3 is bonded to the steel plate via the adhesive 11. In this way, steel plate members such as C-shaped steel beams and H-shaped steel beams can be used as the steel material. Specifically, the reinforcing structure 10 for an architectural structure of the embodiment shown in FIG. 2 has C-shaped steel beams 3, 3 made of the above-mentioned steel plates as vertical frame members, with their web surfaces 3-1 facing each other and abutting against each other. Each web surface 3-1 has two ribs 3-2, one on each side, and the web portions are bonded to each other via an adhesive layer formed by the adhesive 11 (shown exaggerated and hatched in FIG. 2(a) for easy visibility).

[0012] In the reinforcement structure shown in Figure 3, an adhesive 11 is applied to a portion of a C-shaped steel 3 serving as another steel material, and another C-shaped steel 3 is bonded via the adhesive 11, and the portion bonded by the adhesive 11 is further fastened with a screw material 13 serving as a fastening member. In the embodiment of the reinforcing structure 10 for an architectural structure shown in Figure 3, an adhesive 11 is applied to a portion of a C-shaped steel beam 3 serving as a steel plate, and another C-shaped steel beam 3 is bonded via the adhesive 11. Furthermore, the two C-shaped steel beams are fastened together at the adhesively bonded portion with screws 13. Specifically, as shown in Figure 3, the C-shaped steel beams 3 made of the steel plates serving as vertical frame members are abutted together with their web surfaces 3-1 facing each other. Each web surface 3-1 is provided with two ribs 3-2, one on each side, and the web portions are bonded together between them via an adhesive layer formed by the adhesive 11 (shown exaggerated and hatched in Figure 3(a) for easy visibility), and are further fastened together with screws 13 as fastening members.

[0013] In the reinforcement structure 10 shown in FIG. 4 , a C-shaped steel beam 3 as a steel plate and a C-shaped steel beam 3 as the steel material of the other portion are fastened together using screws 13 as fastening members. An auxiliary plate 15 is further attached to the C-shaped steel beam 3 (both the steel plate and the steel material of the other portion in this embodiment) using an auxiliary plate adhesive (not shown). Furthermore, the C-shaped steel beam 3 as a steel plate and the C-shaped steel beam 3 as the steel material of the other portion are bonded together using an adhesive. Specifically, in the reinforcement structure 10 for an architectural structure of the embodiment shown in FIG. 4 , the C-shaped steel beams 3 made of the above-mentioned steel plates are abutted together with their web surfaces 3-1 facing each other as vertical frame members. Each web surface 3-1 has two ribs 3-2, one on each side, and the web portions are bonded together via an adhesive layer formed by adhesive 11 (shown exaggerated and hatched in FIG. 4( a) for easy visibility), and are further fastened together using screws 13 as fastening members.

[0014] In the reinforcing structure 10 of the embodiment shown in FIG. 5, C-shaped steel beams 3 as steel plates and C-shaped steel beams 3 as steel materials of other portions are fastened together using screws 13 as fastening members, and auxiliary plates 15 are further attached to the C-shaped steel beams 3 (both the steel plates and the steel materials of other portions in this embodiment) using an auxiliary plate adhesive (not shown). Specifically, in the reinforcing structure 10 for an architectural structure of the embodiment shown in FIG. 5, the C-shaped steel beams 3 made of the above-mentioned steel plates are used as vertical frame members, and their web surfaces 3-1 are abutted against each other, facing each other. Each web surface 3-1 is provided with two ribs 3-2, one on each side, and the ribs 3-2 are fastened between the two ribs using screws 13 as fastening members. Furthermore, auxiliary plates 15 are attached to the C-shaped steel beams 3 between the ribs 3-2 using an auxiliary plate adhesive (not shown), and the screws 13 penetrate and fasten the C-shaped steel beams 3 and the auxiliary plates 15. 4 and 5, when using auxiliary plates 15 in this way, the auxiliary plates are first adhered to both web surfaces 3-1 to increase the web plate thickness, and the C-shaped steel beams 3 are fastened together with screws 13. This prevents the steel plates of the C-shaped steel beams 3 from being destroyed by the shear force of the screws 13. The fastening members and other members used in each example will be described below.

[0015] [Adhesive and adhesive layer] Any adhesive capable of bonding steel plates to other steel plates or structural plywood or other components can be used. However, the viscosity of the adhesive (in the case of a two-component adhesive, the viscosity within one minute after mixing the two components) is preferably 1 to 100 pas for acrylic adhesives, or even 2 to 40 pas for epoxy adhesives, and 10 to 150,000 pas for epoxy adhesives. Using an adhesive within this viscosity range allows for easy and uniform application to the steel surface without dripping an appropriate amount of adhesive, enabling steel materials or plate materials to be bonded to each other at the construction site in a short time with simple operation. Here, viscosity can be measured using a cone-plate viscometer at a shear rate of 4 seconds. Examples of the adhesive include two-component adhesives. Specific examples of acrylic adhesives include those under the trade name "Metallock Y600 Series" manufactured by Cemedine Co., Ltd. (more specifically, "Y612Black" and the like). Specific examples of epoxy resin adhesives include those under the trade name "Alphatec AT435" manufactured by Alpha Industrial Co., Ltd. The amount of adhesive applied is 0.1 to 0.2 g / cm 2 It is preferable to do so. As shown in Figure 2, the adhesive layer 11 does not need to be formed on the entire contact surface between the steel plate 3 and the steel plate 3 of the other member. It is sufficient to apply adhesive to the area between a pair of left and right ribs that are usually provided in the longitudinal direction of the C-shaped steel to form an adhesive layer and bond the two together.

[0016] [Fastening member] In this embodiment, screws 13 are used as fastening members. Drill screws for steel plates or the like can be used as these screws. In the case of thin steel plates, the strength of the screws is determined by whether they slip out of the steel plate, and they cannot be made large. When adhesive is used in combination, slipout is prevented and the strength is increased, which reduces the number of screws and makes it possible to reduce the area of ​​the joint (the component part of the reinforcing structure) made by the fastening members. When adhesive is used in combination, it is desirable to position the screws as fastening members near the edge of the adhesive area so that they can resist peeling force, which is a weakness of adhesive. Also, when adhesive is not used and fastening members and auxiliary plates are used in combination, there are no particular restrictions on the positioning of the screws as fastening members, but just as when adhesive is used in combination, the number of screws can be reduced by reinforcing with the installation of auxiliary plates.

[0017] [Supporting plate and adhesive for supporting plate] The auxiliary plate is used as reinforcement when fastening the screw material 13. for The auxiliary plate is used as a component of the support structure, and in this embodiment, a plate of approximately the same size as the adhesive surface is used. In this embodiment, the material of the auxiliary plate can be a steel material similar to the C-beam, as well as metals such as stainless steel and aluminum, plastics, and wood materials. The shape can also be a plate, L-shape, angle, T-shape, C-shape, hat-shape, cube-shape, and the like. The thickness can be the same as that of the steel material and other steel parts, but it is preferable to select a thickness of 1.5 to 4.5 mm when combined with the thickness of the web surface 3-1 in order to ensure sufficient strength. For example, if the thickness of the C-beam used as the other steel plate is 0.8 mm, a thickness of approximately 1 mm for the auxiliary plate will be sufficient. The adhesive for the auxiliary plate can be the same as the adhesive described above, and the amount used can be the same as the amount of adhesive used above. This configuration in which the auxiliary plate is attached to the steel plate and steel materials in other locations using the adhesive for the auxiliary plate can be applied in advance at the factory where the steel plates are manufactured, rather than at the site where the building structure is manufactured, which is preferable in that it reduces on-site labor and enables simple building construction.

[0018] [Other components] In the present invention, in addition to the above-mentioned components, other components may be additionally provided within the scope of the present invention.

[0019] [Action and effect] The reinforced structure shown in Figure 2 is a structure in which steel materials are reinforced by bonding other steel materials or reinforcing plates with adhesive, so that thin steel plates can be reinforced with simple and easy construction work at the construction site. Furthermore, even if only a portion is bonded, the initial strength against stress applied by the adhesive is improved, resulting in a sufficient improvement in structural strength. In the example reinforcement structure shown in FIG. 3, steel members made of C-shaped steel are bonded together via adhesive layers 11 formed by adhesive as described above, and fastened with screws 13. .child Therefore, while enjoying the advantages of architectural structures made of thin steel plates, reinforcement is provided where necessary. Specifically, the steel material is bonded to other steel materials (C-beams) via adhesive 11, improving the rigidity of the steel plate, and is reinforced by screws 13. This prevents damage such as breaking of the steel material even when force is applied in the direction of the adhesive surface of the steel plate (the direction of the arrow in Figure 2(b) and the opposite direction), and prevents lateral stress from concentrating on the screws 13, which could cause the steel plate to break or the screws to come loose. By using both adhesive and screws in this way, the amount of screws used can be reduced. The reinforcing structure of the example shown in Figure 4 has the same effect as the example shown in Figure 3, but with the web thickness further reinforced by auxiliary plate 15, and therefore has the same effect as the example shown in Figure 3, and can more strongly prevent the steel plate from breaking or the screw from coming loose, even if lateral stress is concentrated on the screw material. In the reinforced structure shown in FIG. 5, although the initial strength is not improved by the adhesive, the resistance to stress caused by the screws 13 is significantly improved by the adhesive effect of the auxiliary material 15, resulting in a sufficient improvement in the structural strength.

[0020] <Other embodiments> Other embodiments of the reinforcement structure for architectural structures of the present invention will be described below with reference to the drawings. In the following description, the same components as those in the first embodiment described above will be assigned the same numbers, and when the configuration differs, numbers in the 100s or higher will be used as appropriate. Furthermore, differences from the first embodiment will be explained before each embodiment is described. Parts that are the same as those in the first embodiment will not be particularly explained, but the above explanation applies to each of them. The reinforcing structure 110 of the embodiment shown in Fig. 6 differs from the first embodiment in that a C-shaped steel beam 3 as a steel plate is bonded to a reinforcing plate material 120 via an adhesive (adhesive layer 111). The locations where the adhesive is applied to form the adhesive layer and the ratio of the screws laid are the same as those in the first embodiment. In this embodiment as well, an auxiliary plate 115 may be used. (reinforcing plate material) The reinforcing plate 120 used in this embodiment is structural plywood (structural plywood specified by JAS). The thickness can be 9 to 24 mm, and there are no particular restrictions on the material. The reinforcing plate is not limited to structural plywood, and as will be described later, steel plates, gusset plates, and various metal fittings normally used for reinforcement can also be used. In the reinforcing structure of the architectural structure of this embodiment, the structural plywood 120 is adhered to the web portion 3-1 (steel plate) of the structural material C-shaped steel 3 via an adhesive layer 111 and fastened with screws 113, thereby giving high rigidity to the architectural structure made of thin steel plate, and as a result improving the strength of the architectural structure.

[0021] The reinforcing structure 210 of the embodiment shown in FIG. 7 is an example applied to a stud (vertical frame member) 7 and a hold-down metal fitting in an anchor bolt joint structure in a wall panel of a building structure. That is, the third embodiment shown in Figure 4 is an anchor bolt joint structure in an architectural structure, which consists of a stud 7 made up of a plurality of C-shaped steel beams, a horizontal frame member 5 to which the end of the stud 7 is fixed, and a hold-down fitting 220 for ensuring that the stud 7 and the horizontal frame member 5 are fixed in place. The hold-down fitting 220 comprises a plate-shaped portion 221 that contacts the stud 7, a rectangular bolt-fixing portion 227 with a central opening that is installed vertically at the lower end of the plate-shaped portion 221, and triangular reinforcing portions 223 that are installed on both side edges of the bolt-fixing portion 227 and the plate-shaped portion 221. The stud 7 and the plate-shaped portion 221 are bonded with an adhesive (adhesive layer not shown). In this embodiment, the entire surface of the plate-shaped portion is not bonded; only the upper portion where the screws 213 are fastened is bonded. The screws 213 are arranged in two rows on the upper part of the plate-shaped portion 221. The bolt-fixing portion 227 is installed directly above the horizontal frame member 5 and secured with anchor bolt washers 225. Although not shown, a reinforcing plate may be installed inside the stud 7 to accommodate the screws 213. The screw placement in this diagram shows an example where no adhesive is used, but if adhesive is used in combination, the number of screws can be halved, which also contributes to the miniaturization of the hold-down hardware. 。

[0022] The reinforcing structure 310 of the embodiment shown in FIG. 8 is an example applied to a plywood joint of a wall panel. In this embodiment, a stud 7, a horizontal frame member 5 to which the end of the stud 7 is fixed, and plywood 320 as a reinforcing plate member are bonded to both side edges of the stud 7 and the horizontal frame member 5 with an adhesive (adhesive layer not shown). To ensure good adhesion, the vertical frame member and the horizontal frame member are each made of C-shaped steel, and plywood 320 is bonded to both side edges of each. Screws 313 are inserted at a predetermined interval between the stud 7 and the horizontal frame member 5, penetrating them and fastening them together. Although not shown, a reinforcing plate may be provided inside the stud 7 to correspond to the screws 313.

[0023] The reinforcing structure 410 for an architectural structure of the embodiment shown in FIG. 9 is an example applied to a joint. In this embodiment, a stud 7 serving as a column, which is formed by bonding together C-shaped steel beams with their web portions 7-1 and 9-1 abutting against each other, is connected to a beam 9 using a gusset plate 415 as a reinforcing plate material for reinforcement. The web portions 7-1 and 7-1 of the C-shaped steel beams constituting the column and the web portions 9-1 and 9-1 of the C-shaped steel beams constituting the beam are arranged facing each other, and a gusset plate 415 is disposed between them. The contact surfaces between the web portions 7-1 of each C-shaped steel beam constituting the column and the gusset plate 415, and the contact surfaces between each C-shaped steel beam web portion 9-1 and the gusset plate 415 are bonded with adhesive (adhesive layer not shown), and are further fastened with screws 413. In addition, a steel plate 420 may be provided as an auxiliary plate.

[0024] The reinforcing structure 410 for an architectural structure of the embodiment shown in Figure 10 is a structural example using gusset plates 420. The embodiment shown in Figure 10(a) is an example applied to the joint between a column made of C-shaped steel 7 and a base plate 7-3, and a gusset plate 420 is installed between the web portions 7-1, 7-1 of the C-shaped steel. The adhesive, screws, and auxiliary plates are not specifically shown, but are the same as those in the embodiment shown in Figure 7. The embodiment shown in Figure 10(b) is an example applied to an assembled beam or column. That is, in a lattice structure made of flat steel 8 laid on square steel pipes 6, the gusset plates 420 are laid so as to abut both the flat steel 8 and the square steel pipes 6. 11 shows an example of application to a roof framing member. In the embodiment shown in FIG. 11, gusset plates 420 are installed at the joints between the truss top chord member 2 and the lattice member 4-1 and beam member 4-2 so that they abut against each member. The abutting surfaces of the truss top chord member 2, the lattice member 4-1, and the beam member 4-2 and the gusset plate 420 are bonded with an adhesive, and each is fastened with a screw 413. In addition, L-shaped steel plates 415 may be installed as auxiliary plates in the areas where the screws 413 are installed. As in the embodiment shown in Figures 9 to 11, by using base materials such as gusset plates and C-section steel to form the reinforcement structure of the present invention, a stable joint can be formed without using welding.

[0025] The reinforcing structure 510 of the embodiment shown in Figure 12 is an example applied to floor joists. In this structure, the joint between floor joist 5-1 and end joist 5-2 is reinforced using C-shaped steel 520 as a reinforcing plate. C-shaped steel 520 as a reinforcing plate is installed so that its web portion 521 contacts floor joist 5-1 and its flange portion 522 contacts end joist 5-2. Screws 513 fasten flange portion 522 to end joist 5-2, and web portion 521 to floor joist 5-1, respectively. Steel plates 515 may also be placed as auxiliary plates in the locations where screws 513 are installed. By providing it to the roof joists as in this embodiment, the structural strength of the roof portion can be improved.

[0026] The reinforcing structure 620 of the embodiment shown in Figure 13 is an example applied to a suspended ceiling. It includes a ceiling slab 603 suspended from a skeleton 601, a hanger 605 fixed to the skeleton and the ceiling slab with fasteners (not shown), and a diagonal member 607 that reinforces the ceiling slab 603 against shaking caused by the hanger 605. A gusset plate 620 is adhered to the diagonal member 607 with an adhesive (not shown) and further fastened with screws 613. By configuring the suspended ceiling as in this embodiment, the strength of the suspended ceiling can be increased by only slightly increasing the weight of the suspended ceiling, and the suspended ceiling can be made into an architectural structure with improved resistance to stresses such as earthquakes. The reinforcing structure 720 of the embodiment shown in FIG. 14 is a reinforcing structure in which rebar (as steel material) is fixed to steel material via adhesive. The reinforcing structure 720 shown in FIG. 14(a) is formed by bonding a steel siding support 7-3 (as steel plate) to the end of a wire (hanging bolt) 7-1 (as steel material) with adhesive 713. The adhesive is disposed to cover half of the siding support side of the wire 7-1, and thick, triangular prism-shaped adhesive portions 713a are formed on both sides of the siding support surface, covering the surface of the wire 7-1. This allows for strong adhesion, resulting in a reinforcing structure that exhibits sufficient strength. Furthermore, unlike welding, there is no fire on site, no cross-sectional damage to the wire 7-1, no surface roughness, and no rust. In the reinforcement structure 720 shown in (b), an adhesive part 713a is formed by bonding a joist support 7-3 as a steel plate to the center of a wire rod (hanging bolt) 7-1 as a steel material with an adhesive 713. The rest is the same as the example shown in (a). For reference, (c) shows an example in which wire rods 7-1 are bonded together with adhesive 713. By bonding wire rods together with a lap joint using adhesive in this way, the wire rod extension work on site can be simplified.

[0027] As described above, the reinforcement structure of the present invention is applicable to columns, beams, joists, furring strips, braces, joints, or panel zones in building structures. Therefore, it can be said that the above-mentioned steel plates constitute columns, beams, joists, furring strips, joints, or panel zones in building structures.

[0028] The present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the spirit of the present invention. [Example]

[0029] The present invention will be explained in more detail below with reference to examples. Example 1 A 0.8 mm thick 25-type W bar (product name, manufactured by Kirii Manufacturing Co., Ltd., C-shaped steel with the same structure as the steel plate shown in Figure 2) was used, and adhesive TGA-3 (two-component acrylic adhesive, product name, Cemedine Co., Ltd.) was used to bond the bar to a 750 mm 2The test pieces were bonded together to obtain the reinforced structure shown in Figure 2. The obtained test pieces were subjected to a tensile strength test (JIS L 1096). The results showed that the adhesive bond was maintained at a displacement of approximately 1-2 mm and a tensile load (N) of approximately 14,000 N. These results demonstrate that the reinforcement structure of the present invention can reinforce structures sufficiently to withstand excessive forces in the early stages of stress application. Example 2 The reinforced structure shown in FIG. 2 was obtained in the same manner as in Example 1, except that adhesive Y612 Black (a two-component acrylic adhesive, trade name, manufactured by Cemedine Co., Ltd.) was used as the adhesive. The tensile strength of the obtained test piece was measured in the same manner as in Example 1, and almost the same results as in Example 1 were obtained. Example 3 A 0.8 mm thick 25-type W bar (product name, manufactured by Kirii Manufacturing Co., Ltd., C-shaped steel with the same structure as the steel plate shown in Figure 3) was used, and adhesive TGA-3 (two-component acrylic adhesive, product name, Cemedine Co., Ltd.) was used to bond the bar to a 750 mm 2 The specimens were bonded together with a 15mm x 50mm diameter. Three screws were also placed on the bonding surface, and the specimens were fastened together with a fastening member to obtain a test piece with the reinforced structure shown in Figure 3. The obtained test pieces were subjected to a tensile strength test (JIS L 1096) in the same manner as in Example 1. As a result, the adhesive joint broke at a displacement of about 1-2 mm and a tensile load (N) of about 14,000 N, as in Example 1, but the fastened state of the adhesive-fastened portion was maintained. After that, the resistance of the screws became effective at a tensile strength of about 6,000 N, and resistance of about 5,000 N was observed up to a displacement of about 15 mm. These results demonstrate that the reinforcement structure of the present invention shown in Figure 3 can sufficiently withstand excessive force in the initial stage of stress application, and subsequently exhibits tenacity, allowing structures to be reinforced so that the fastened state can be maintained until the displacement becomes large. Example 4 The reinforced structure shown in FIG. 3 was obtained in the same manner as in Example 3, except that adhesive Y612 Black (a two-component acrylic adhesive, trade name, manufactured by Cemedine Co., Ltd.) was used as the adhesive. The tensile strength of the obtained test piece was measured in the same manner as in Example 3, and almost the same results as in Example 3 were obtained. Example 5 Test pieces with a reinforced structure using only screws were obtained in the same manner as in Example 3, except that the number of screws was changed to six or three and no adhesive was used. The tensile strength of the obtained test pieces was measured in the same manner as in Example 3, and the strength up to an initial displacement of 1 to 2 mm was about 13,000 N for 6 pieces and about 6,000 N for 3 pieces, and thereafter showed yield strength up to a displacement of about 15 mm, similar to Example 3, with a tensile strength of about 13,000 N for 6 pieces and resistance of about 5,000 N to 6,000 N for 3 pieces. These results show that the test pieces are tough and can reinforce structures so that the fastened state can be maintained until the displacement becomes large. Example 6 A 0.8 mm thick 25-type W bar (product name, manufactured by Kirii Manufacturing Co., Ltd., C-shaped steel with the same structure as the steel plate shown in Figure 3) was used, and adhesive TGA-3 (two-component acrylic adhesive, product name, Cemedine Co., Ltd.) was used, with a bonding area of ​​2000 mm. 2 The specimens were bonded together with a size of 20mm x 100mm. Six screws were also placed on the bonding surface, and the specimens were fastened together with fastening members to obtain a test piece with the reinforced structure shown in Figure 3. The obtained test pieces were subjected to a tensile strength test (JIS L 1096) in the same manner as in Example 1. The results showed that the adhesive bonded joints were maintained at a displacement of approximately 1 to 2 mm and a tensile load (N) of 19,000 N or more. Thereafter, the screws demonstrated effective resistance at a tensile strength of 10,000 N to 12,000 N, and maintained tensile strength resistance within this range up to a displacement of approximately 17 mm. Furthermore, the screws began to come loose when the displacement exceeded 17 mm. These results demonstrate that increasing the adhesive area and the number of screws simultaneously provides a high level of resistance to excessive force in the initial stage of stress application, and further increases the strength and displacement that indicate subsequent tenacity. Example 7 A test piece with a reinforced structure was obtained in the same manner as in Example 6, except that the number of screws was changed to three. A tensile strength test (JIS L 1096) was performed on the obtained test piece in the same manner as in Example 1. As a result, the tensile strength after fracture of the part fastened by the adhesive was 7000 N to 5000 N, and although the displacement at which the screws came out was about 16 mm, the same effect as in Example 6 was obtained. Example 8 Except for not using adhesive, a test piece with a reinforced structure was obtained in the same manner as in Example 6. A tensile strength test (JIS L 1096) was performed on the obtained test piece in the same manner as in Example 1. The results showed that the tensile strength at a displacement of about 1 to 2 mm was about 13,000 N, but thereafter, the screws remained intact up to a displacement of 15 mm with a tensile load of 10,000 N or more. Example 9 A test piece for a reinforced structure was obtained in the same manner as in Example 6, except that no screws were used. The obtained test piece was subjected to a tensile strength test (JIS L 1096) in the same manner as in Example 1. The results showed that the adhesive joint was fastened to a displacement of approximately 1 to 2 mm and a tensile load (N) of approximately 18,000 N. Thus, it was found that the reinforced structure of the present invention fastened with an adhesive exhibits extremely high strength. Example 10 A 0.8 mm thick 25-type W bar (product name, manufactured by Kirii Manufacturing Co., Ltd., C-shaped steel with the same structure as the steel plate shown in Figure 5) was used, and three screws were used to fasten the bar with the fastening member. The 25W bar was also previously fastened with adhesive TGA-3 (two-component acrylic adhesive, product name, Cemedine Co., Ltd.) to a 2000 mm 2 A 20mm x 100mm steel plate SS400 (JIS G3101) was glued to the board and then fastened with screws. This resulted in a test piece with the reinforced structure shown in Figure 5. The obtained test pieces were subjected to a tensile strength test (JIS L 1096) in the same manner as in Example 1. As a result, the resistance of the screws was effective at a tensile strength of about 10,000 N, and the resistance of the tensile strength was maintained within this range up to a displacement of about 10 mm. However, when the displacement exceeded 10 mm, the screws came out. This result indicated that the test pieces were capable of resisting excessive force. Example 11 A test piece with a reinforced structure was obtained in the same manner as in Example 10, except that six screws were used. A tensile strength test (JIS L 1096) was conducted on the obtained test piece in the same manner as in Example 1. The results showed that the resistance provided by the screws was effective at a tensile strength of 13,000 N or more, and showed resistance to tensile strength within this range up to a displacement of approximately 15 mm. Furthermore, when the displacement exceeded 15 mm, the screws came out. These results demonstrated that the test piece was capable of resisting excessive force.

Claims

1. A reinforcement structure for an architectural structure made using steel plates, A steel material or a reinforcing plate material of another portion is bonded to a part of the steel plate via an adhesive, The adhesive is an acrylic adhesive and has a viscosity of 1 to 100 Pas, A reinforced structure in which the steel plate and the steel material of the other portion or the reinforcing plate material are further fastened together using a fastening member.

2. A reinforcement structure for an architectural structure made using steel plates, the steel plate and the steel material or reinforcing plate material of another portion are bonded together via an adhesive, and an auxiliary plate is further attached to the bonded portion via an auxiliary plate adhesive, The reinforcing structure, wherein the adhesive and the adhesive for the auxiliary plate are acrylic adhesives having a viscosity of 1 to 100 Pas.

3. 3. The reinforcing structure according to claim 2, wherein the steel plate and the auxiliary plate, the steel plate and the steel material or the reinforcing plate material in the other portions, or the steel plate, the auxiliary plate, and the steel material or the reinforcing plate material in the other portions are further fastened using fastening members.

4. 3. The reinforced structure according to claim 1, wherein the thickness of the steel plate to be reinforced is 0.4 to 8.0 mm.

5. 3. The reinforced structure according to claim 1, wherein the steel plate is a steel plate constituting a column, a beam, a joist, a furring strip, a brace, a joint, or a panel zone in a building structure.

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