Reinforcing structure for building structure

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 reinforcing structure for a building structure using a steel plate, and more specifically, to a reinforcing structure for a building structure that can perform reinforcement according to the reinforcement purpose by a simple and convenient construction method.

Background Art

[0002] Building structures using steel materials are variously used, and the places where such steel materials are used are various members such as structural materials such as columns and beams, and bases for wall materials and floor materials. Here, building structures using steel materials, particularly those using thin steel materials with a thickness of 10 mm or less, can be constructed at low cost and in a short period of time and have sufficient strength for use, so they are being utilized. However, due to problems such as strength in the event of an emergency such as an earthquake and strength reduction due to repeated aging, devices for strengthening the strength have been proposed. For example, although not limited to those with a small thickness, Patent Document 1 (Japanese Patent No. 6474071) proposes a seismic reinforcement method and a seismic reinforcement building that have a shorter construction period and lower cost. Specifically, an adhesive is applied to the surface and guide pins of a steel frame member having a surface to which a plurality of guide pins and a plurality of spacers are fixed, and the guide pins are inserted into and pressed against concrete having a surface in which holes into which the guide pins of the steel frame member can be inserted are formed in advance, and a reinforcement method for adhering the concrete and the steel frame member is proposed. Similarly, although not limited to those with a small thickness, Patent Document 2 (Japanese Patent No. 6114012) proposes a reinforcement method by adhesion that can secure a larger adhesive area at the adhesion part in the situation of adhering an adherend member to a beam or column of a steel frame building. Specifically, it is an adhesion method for adhering an adherend member to a steel frame beam constituting a steel frame building, and includes a step of covering the adherend member via a space layer with respect to at least a part of each of a plurality of surfaces of the outer surface of the steel frame beam, and after the step of covering the adherend member, filling the space layer with an epoxy resin to adhere the adherend member and the steel frame beam, and an adhesive filling step.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the reinforcement method according to the above proposal, the steel plate building has not yet been sufficiently reinforced, and particularly in the building structure using thin steel plates, the reinforcement effect is insufficient. In recent years, the thickness of thin steel plates is usually less than 3 mm, but in the ceiling base material and wall base material, it is even thinner and tends to be less than 1 mm. However, in the above proposal, the reinforcement effect of such thin steel plates is particularly insufficient.

[0005] Therefore, an object of the present invention is to provide a reinforcement structure for a building structure that can be reinforced to sufficient strength even when composed of thin steel plates with a thickness of less than 3 mm as well as ordinary steel plates.

Means for Solving the Problems

[0006] As a result of intensive studies to solve the above problems, the present inventors have found that when the portions where steel plates contact each other are adhered using an adhesive and fastened with screws, even thin steel plates show a sufficient improvement in strength, and thus have completed the present invention. That is, the present invention provides the following inventions. 1. A reinforcement structure for a building structure using steel plates, wherein steel materials or reinforcement plates of other parts are adhered to a part of the steel plates via an adhesive, the reinforcement structure. 2. A reinforcement structure for a building structure using steel plates, The above steel plate is fastened to the steel material of the other part or the above reinforcing plate material by using a fastening member. For the steel material of the other part or the above reinforcing plate material with the above steel plate, an auxiliary plate is further adhered via an adhesive for the auxiliary plate, which is a reinforcing structure. 3. The reinforcing structure according to 2, wherein the above steel plate is further adhered to the steel material of the other part or the above reinforcing plate material via an adhesive. 4. The thickness of the steel plate to be reinforced is 0.4 to 8.0 mm, or the reinforcing structure according to 2. 5. The adhesive is an acrylic-based adhesive or an epoxy-based adhesive, and the viscosity is 1 to 100 pas for the acrylic-based and 10 to 150,000 pas for the epoxy-based, which is the reinforcing structure according to 1 or 3. 6. The steel plate is a steel plate constituting a column, beam, joist, girt, brace, joint or panel zone in a building structure, which is the reinforcing structure according to 1 or 2.

Advantages of the Invention

[0007] The reinforcing structure of the building structure of the present invention is reinforced to have sufficient strength even when it is composed of not only ordinary steel plates but also thin steel plates with a thickness of less than 1 mm.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Explanation of Reference Numerals

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

Embodiments for Carrying Out the Invention

[0010] The present invention will be described in more detail below. <Building Structure> The reinforcing structure of the building structure of this embodiment is a reinforcing structure of a building structure made of steel plates. In this embodiment, as shown in FIG. 1, the building structure 1 is formed using thin steel plates. Similar to a normal building, it is composed of structural members such as columns or vertical framing members (since C-shaped steel is usually used, hereinafter C-shaped steel will be suffixed with 3), horizontal framing members 5, beams 7, etc., and wall panels 9. 〔Steel Plate〕 The building structure of this embodiment is made of steel plates. However, the steel plates used for the structural members, that is, columns, horizontal framing members, beams, etc., can be used without particular limitation as long as they are those usually used for building structures. However, it is preferably a so-called thin steel plate and a material used for lightweight steel structures (hereinafter, these will be collectively referred to simply as "thin steel plates"). This is because such thin steel plates particularly require high reinforcement. Its thickness is usually, specifically, 0.4 to 8.0 mm, and 0.4 to 4.5 mm (that is, a steel plate with a thickness referred to as "thin steel plate" in the industry is applicable), which is preferable because the strength reinforcement effect of the present invention can be obtained to the maximum extent. That is, in all the following examples, thin steel plates within this thickness range are used. If the thickness of the steel plate is less than 0.4 mm, it becomes difficult to use as a structural member, and if it exceeds 8.0 mm, it becomes difficult to perform screw joining, so it is preferable to be within the above range. In addition, the materials of the above thin steel plates include iron-made steel plates such as hot-rolled steel materials, hot-rolled steel plates, cold-rolled steel plates, electro-galvanized steel plates, hot-dip galvanized steel plates, electroplated steel plates; stainless steel plates such as SUS304 and SUS403; aluminum, etc.

[0011] 〔Specific Embodiment〕 Next, with reference to FIGS. 2 to 5, as an embodiment of the reinforcing structure of the building structure of the present invention, four modified examples of the reinforcing structure using C-shaped steel as a steel material and C-shaped steel as a steel material or a reinforcing plate material in other parts (that is, using two C-shaped steels) will be described. FIGS. 2 to 5 show the reinforcing structures of the respective embodiments. FIG. 2 shows a form using only an adhesive, FIG. 3 shows a form combining an adhesive and a fastening member, FIG. 4 shows a form combining an adhesive, a fastening member, and a reinforcing plate material, and FIG. 5 shows a form combining a fastening member and a reinforcing plate material without using an adhesive. Each of them will be described below. In the reinforcing structure 10 shown in FIG. 2, an adhesive 11 is applied to a part of the C-shaped steel 3 as a steel plate, and the C-shaped steel 3 as another steel material is adhered via the adhesive 11. As such steel materials, C-shaped steel, H-shaped steel, etc., which are steel plate members, can be used. Specifically, in the reinforcing structure 10 of the building structure shown in FIG. 2, the C-shaped steels 3, 3 made of the above steel plates are used as vertical frame members, and their web surfaces 3-1 are opposed to each other and abutted. A total of two ribs 3-2 are provided on the web surfaces 3-1, one on each side, and between them, the web portions are adhered via an adhesive layer formed by the adhesive 11 (exaggerated and hatched as visible in FIG. 2(a)).

[0012] In the reinforcing structure shown in FIG. 3, an adhesive 11 is applied to a part of the C-shaped steel 3 as another steel material, the other C-shaped steel 3 is adhered via the adhesive 11, and the portion adhered by the adhesive 11 is further fastened by a screw member 13 as a fastening member. The reinforcing structure 10 of the building structure according to the embodiment shown in FIG. 3 has an adhesive 11 applied to a part of the C-shaped steel 3 as a steel plate, and another C-shaped steel 3 is adhered via the adhesive 11. Further, at the portion adhered by the adhesive, two C-shaped steels are fastened by a screw member 13. Specifically, as shown in FIG. 3, the C-shaped steels 3 made of the above steel plates as vertical frame members are brought into contact with each other with their web surfaces 3-1 facing each other. On each web surface 3-1, a total of two ribs 3-2 are provided, one on each side, and between them, the web portions are adhered via an adhesive layer formed by the adhesive 11 (exaggerated and hatched in FIG. 3(a) for visibility), and are further fastened using a screw member 13 as a fastening member.

[0013] In the reinforcing structure 10 shown in FIG. 4, the C-shaped steel 3 as a steel plate and the C-shaped steel 3 as the steel material of the above other part are fastened using a screw member 13 as a fastening member. An auxiliary plate 15 is further adhered to the C-shaped steel 3 (both the steel plate and the steel material of the other part in this embodiment) via an adhesive for auxiliary plate (not shown). Further, the C-shaped steel 3 as a steel plate and the C-shaped steel 3 as the steel material of the above other part are adhered via an adhesive. Specifically, the reinforcing structure 10 of the building structure according to the embodiment shown in FIG. 4 has the C-shaped steels 3 made of the above steel plates as vertical frame members brought into contact with each other with their web surfaces 3-1 facing each other. On each web surface 3-1, a total of two ribs 3-2 are provided, one on each side, and between them, the web portions are adhered via an adhesive layer formed by the adhesive 11 (exaggerated and hatched in FIG. 4(a) for visibility), and are further fastened using a screw member 13 as a fastening member.

[0014] The reinforcement structure 10 of the embodiment shown in FIG. 5 has a C-shaped steel 3 as a steel plate and a C-shaped steel 3 as a steel material in other parts fastened together using a screw material 13 as a fastening member. An auxiliary plate 15 is further adhered to the C-shaped steel 3 (both the steel plate and the steel material in other parts in this embodiment) via an adhesive for the auxiliary plate (not shown). Specifically, in the reinforcement structure 10 of the building structure of the embodiment shown in FIG. 5, the C-shaped steels 3 made of the above steel plates are used as vertical frame members, and their web surfaces 3-1 are abutted against each other. Two ribs 3-2 are provided on each of the web surfaces 3-1, one on each side, and in between, they are fastened using a screw material 13 as a fastening member. An auxiliary plate 15 is adhered to the portion between the ribs 3-2 in the C-shaped steel 3 via an adhesive for the auxiliary plate (not shown), and the screw material 13 is fastened through the C-shaped steel 3 and the auxiliary plate 15. When using the auxiliary plate 15 in this way as shown in the examples of FIGS. 4 and 5, the auxiliary plates are first adhered to both web surfaces 3-1 to increase the web plate thickness, and the mutual C-shaped steels 3 are fastened by the screw material 13. This is configured to prevent the steel plate of the C-shaped steel 3 from being broken by the shearing force of the screw material 13. Hereinafter, members such as the fastening members used in each example will be described.

[0015] 〔Adhesive and adhesive layer〕 As the above-mentioned adhesive, any adhesive that can bond a steel plate to another steel plate or another member such as a structural plywood can be used. However, the viscosity of the adhesive (in the case of a two-component mixed type, the viscosity within 1 minute immediately after mixing the two components) is preferably 1 to 100 pas, more preferably 2 to 40 pas for acrylic-based adhesives, and 10 to 150,000 pas for epoxy-based adhesives. By using an adhesive within this viscosity range, an appropriate amount of adhesive can be easily and uniformly applied to the surface of the steel material without dripping, and the steel materials or the steel plate and the plate material can be bonded in a short time with a simple operation at the construction site. Here, the viscosity can be measured using a cone-plate viscometer at a shear rate of 4 s-1. As the above-mentioned adhesive, a two-component mixed adhesive or the like can be used. Specifically, as an acrylic-based adhesive, the product name "Metal Lock Y600 series" manufactured by Cemedine Co., Ltd. (more specifically, for example, "Y612Black", etc.) can be mentioned. As an epoxy resin-based adhesive, specifically, for example, the product name "Alpha Tech AT435" manufactured by Alpha Industry Co., Ltd. can be mentioned. The coating amount of the adhesive is preferably 0.1 to 0.2 g / cm 2 preferably. As shown in FIG. 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. Usually, the adhesive is applied to the portion between a pair of left and right ribs provided in the longitudinal direction of the C-shaped steel to form an adhesive layer, and the two can be bonded.

[0016] 〔Fastening member〕 In this embodiment, a screw member 13 is used as the fastening member. As this screw member, a drill screw for steel plates or the like can be used. In the case of a thin steel plate, the strength of the screw is determined by its withdrawal from the steel plate and cannot be increased significantly. When an adhesive is used in combination, the number of screws can be reduced by preventing withdrawal and increasing the strength, and the area of the joint portion (the constituent portion of the reinforcing structure) by the fastening member can be reduced. When using an adhesive in combination, it is desirable to arrange the screw material as a fastening member near the end of the bonding area so as to resist the peeling force, which is a weakness of the adhesive. Further, when not using an adhesive and using a fastening member and an auxiliary plate in combination, the arrangement of the screw material as the fastening member is not particularly limited. However, similar to the case of using an adhesive in combination, the number of screw materials can be reduced by reinforcement by installing the auxiliary plate.

[0017] 〔Auxiliary plate and adhesive for auxiliary plate〕 The auxiliary plate is used as a member for reinforcement when fastening the screw material 13. In the present embodiment, a plate having substantially the same size as the bonding surface is used. In the present embodiment, as the material of the auxiliary plate, in addition to steel materials similar to C-shaped steel, metals such as stainless steel and aluminum, plastics, wood materials, etc. can also be used. Further, the shape can be other than plate-shaped, such as L-shaped, angle, T-shaped, C-shaped, hat-shaped, cube-shaped, etc. The thickness may be the same thin steel plate as that of the steel material and other parts, but it is preferable to select a thickness of 1.5 to 4.5 mm in combination with the thickness of the web surface 3-1 in terms of providing sufficient strength. For example, when the thickness of C-shaped steel as another steel plate is 0.8 mm, a sufficient effect can be obtained with a thickness of the auxiliary plate of about 1 mm. As the adhesive for the auxiliary plate, the same adhesive as described above can be used, and the amount used can also be the same as the amount of the adhesive used above. The configuration of attaching the auxiliary plate to the steel plate and the steel materials of other parts using the adhesive for the auxiliary plate in this way can be pre-constructed in the factory where each steel plate is manufactured, rather than at the site where the building structure is manufactured. Therefore, it is preferable in terms of reducing the man-hours at the site and realizing simple building construction.

[0018] 〔Other members〕 In the present invention, in addition to the above-described members, other members may be additionally provided without departing from the gist of the present invention.

[0019] 〔Function and effect〕 The reinforcement structure of the example shown in FIG. 2 is a structure in which steel materials and other steel materials or reinforcing plates are bonded via an adhesive, so that the thin steel plate can be reinforced with simple and convenient construction work at the construction site. Further, even if only a part is bonded, an improvement in the initial strength against stress applied by the adhesive can be seen, and as a result, a sufficient improvement in strength in terms of structure can be seen. In the reinforcement structure of the example shown in FIG. 3, steel materials made of C-shaped steel are bonded via the adhesive layer 11 formed by the adhesive as described above, and are fastened with screw members 13. Therefore, while enjoying the advantages of building structures made of thin steel plates, the parts that should be reinforced as appropriate are reinforced. Specifically, since the steel material is bonded to another member, i.e., a steel material (C-shaped steel), via the adhesive 11, the rigidity of the steel plate is improved, and since it is reinforced by the screw members 13, even when a force is applied in the surface direction of the bonding surface of the steel plate (the direction of the arrow in FIG. 2(b) and the opposite direction), it is possible to prevent the steel material from being damaged such as being broken and the lateral stress from concentrating on the screw members 13 and causing the steel plate to break or the screws to come out. By using the adhesive and the screw members in combination in this way, the amount of screw members used can be reduced. In the reinforcement structure of the example shown in FIG. 4, since the web thickness is reinforced with the auxiliary plate 15 in addition to the reinforcement structure of the example shown in FIG. 3, the same effects as those of the example shown in FIG. 3 can be obtained. Further, even when lateral stress concentrates on the screw members, it is possible to prevent the steel plate from breaking or the screws from coming out with higher strength. In the reinforcement structure of the example shown in FIG. 5, although there is no improvement in the initial strength by the adhesive, the resistance to stress by the screw members 13 is significantly improved by the effect of attaching the auxiliary material 15, and as a result, a sufficient improvement in strength in terms of structure can be seen.

[0020] <Other Embodiments> Hereinafter, other embodiments of the reinforcement structure of the building structure of the present invention will be described with reference to the drawings. In the following description, the same members as those in the first embodiment described above are given the same numbers, and when the configurations are different, numbers in the 100s or more are appropriately given for explanation. Further, each embodiment will be described after explaining the differences from the first embodiment. The same parts as those in the first embodiment will not be particularly described, but the above descriptions are appropriate respectively. The reinforcement structure 110 of the embodiment shown in FIG. 6 is different from the first embodiment in that the C-shaped steel 3 as a steel plate is adhered to the reinforcing plate material 120 via an adhesive (adhesive layer 111). The parts where the adhesive is applied to form the adhesive layer and the laying ratio of the screws are the same as those in the first embodiment. In this embodiment, the auxiliary plate 115 may also be used. (Reinforcing plate material) As the reinforcing plate material 120 used in this embodiment, a structural plywood (structural plywood defined in JAS) is used. Those with a thickness of 9 to 24 mm can be used, and the material is not particularly limited. Note that the reinforcing plate material is not limited to structural plywood, and as will be described later, steel plates, gusset plates, and various hardware used for normal reinforcement can be used. In the reinforcement structure of the building structure of this embodiment, the structural plywood 120 is adhered to the web portion 3-1 (steel plate) of the C-shaped steel 3, which is a structural member, via the adhesive layer 111 and fastened by the screw member 113. Therefore, a high rigidity can be given to the building structure made of thin steel plates, and as a result, the strength of the building structure can be improved.

[0021] The reinforcement structure 210 of the embodiment shown in FIG. 7 is an example applied to the stud (vertical frame member) 7 and the hold-down hardware in the anchor bolt joint structure portion of the wall panel of the building structure. That is, the third embodiment shown in FIG. 4 is an anchor bolt joint structure portion of a building structure, which includes a stud 7 formed by integrating a plurality of C-shaped steels, a horizontal frame member 5 to which the end of the stud 7 is fixed, and a hold-down fitting 220 for ensuring the fixed state of the stud 7 and the horizontal frame member 5. The hold-down fitting 220 includes a plate-like portion 221 that contacts the stud 7, a plate-like bolt fixing portion 227 that is installed vertically with respect to the plate-like portion 221 at the lower end of the plate-like portion 221 and has a rectangular shape with an opening formed in the center, and reinforcing portions 223 made of triangular plate materials provided on both side edges of the bolt fixing portion 227 and the plate-like portion 221. The stud 7 and the plate-like portion 221 are adhered by an adhesive (the adhesive layer is not shown). Also in this embodiment, the entire surface of the plate-like portion is not adhered, and only the portion where the upper screw member 213 is fastened is adhered. The screw members 213 are provided in two rows at the upper part of the plate-like portion 221. The bolt fixing portion 227 is installed directly above the horizontal frame member 5 and is fixed by an anchor washer 225. Also, although not shown, a reinforcing plate may be provided inside the stud 7 corresponding to the screw member 213. The screw number arrangement in this figure shows an example when no adhesive is used, but if an adhesive is used in combination, the number of screws can be reduced by half, which can also contribute to the miniaturization of the hold-down metal fittings. Thereby,

[0022] The reinforcement structure 310 of the embodiment shown in FIG. 8 is an example applied to the plywood joint portion of the wall panel. In this embodiment, a plywood 320 as a reinforcing plate material is adhered to both side edges of the stud 7, the horizontal frame member 5 to which the end of the stud 7 is fixed, via an adhesive (the adhesive layer is not shown). In order to perform the adhesion well, the vertical frame member and the horizontal frame member are each made of C-shaped steel, and the plywood 320 is adhered to both side edge portions thereof. Screw members 313 are provided so as to penetrate both of them at a predetermined interval in the portion where the stud 7 and the horizontal frame member 5 are adhered, and both of them are fastened. Also, although not shown, a reinforcing plate may be provided inside the stud 7 corresponding to the screw member 313.

[0023] The reinforcement structure 410 of the building structure shown in FIG. 9 is an example applied to a joint. In this embodiment, when connecting the stud 7 as a column and the beam 9 formed by abutting and bonding C-shaped steels with their web portions 7-1 and 9-1 in contact, a gusset plate 415 is used as a reinforcing plate for reinforcement. Here, the web portions 7-1 of the C-shaped steels constituting the column face each other, and the web portions 9-1 of the C-shaped steels constituting the beam face each other, and the gusset plate 415 is disposed therebetween. And the contact surfaces between the web portion 7-1 of each C-shaped steel for column construction and the gusset plate 415, and the contact surfaces between the web portion 9-1 of each C-shaped steel for beam construction and the gusset plate 415 are adhered by an adhesive (the adhesive layer is not shown), and further fastened using screws 413 respectively. Also, a steel plate 420 may be provided as an auxiliary plate.

[0024] The reinforcement structure 410 of the building structure shown in FIG. 10 is an example of a structure using a gusset plate 420. The embodiment shown in FIG. 10(a) is an example applied to the joint portion between the column made of C-shaped steel 7 and the base plate 7-3, and a gusset plate 420 is installed between the web portions 7-1 of the C-shaped steel. Although not particularly shown for the adhesive, screws, and auxiliary plate, they are the same as those in the embodiment shown in FIG. 7. The embodiment shown in FIG. 10(b) is an example applied to an assembled beam or column. That is, in a lattice structure formed by laying flat steel 8 on a square steel pipe 6, the gusset plate 420 is laid so as to abut on both the flat steel 8 and the square steel pipe 6. Also, FIG. 11 shows an example applied to a roof frame member. In the embodiment shown in FIG. 11, the gusset plate 420 is installed so as to abut on each member at the joint portion between the truss upper chord member 2, the lattice member 4-1, and the bundled member 4-2. And the contact surfaces between the truss upper chord member 2, the lattice member 4-1, the bundled member 4-2, and the gusset plate 420 are adhered via an adhesive and fastened by screws 413 respectively. Also, an L-shaped steel plate 415 may be provided as an auxiliary plate at the portion where the screws 413 are provided. As in the embodiment shown in FIGS. 9 to 11, by using a gusset plate and a base material such as C-shaped steel to form the reinforcing structure of the present invention, a stable joint can be formed without using welding.

[0025] The reinforcing structure 510 of the embodiment shown in FIG. 12 is an example applied to a floor joist. It is a structure in which the joint between the floor joist 5-1 and the end joist 5-2 is reinforced using a C-shaped steel 520 as a reinforcing plate material. The C-shaped steel 520 as the reinforcing plate material is installed such that its web portion 521 contacts the floor joist 5-1 and its flange portion 522 contacts the end joist 5-2. And, the screw members 513 fasten the flange portion 522 and the end joist 5-2, and the web portion 521 and the floor joist 5-1, respectively. Also, a steel plate 515 as an auxiliary plate may be arranged at the portion where each screw member 513 is provided. As in this embodiment, by providing it to the roof joist, the structural strength of the roof portion can be improved.

[0026] The reinforcing structure 620 of the embodiment shown in FIG. 13 is an example applied to a suspended ceiling. It includes a ceiling board 603 suspended from a building frame 601, a hanging tool 605 fixed to the building frame and the ceiling board by a fastener (not shown in particular), and a diagonal member 607 that reinforces the sway of the ceiling board 603 by the hanging tool 605. And, a gusset plate 620 is adhered to this diagonal member 607 by an adhesive (not shown), and is further fastened by screw members 613. By configuring as in this embodiment, only by slightly increasing the weight of the suspended ceiling, the strength of the suspended ceiling can be made higher, and even when stress such as an earthquake is applied, it can be made into a building structure with further improved load-bearing capacity. The reinforcement structure 720 of the embodiment shown in FIG. 14 is a reinforcement structure that fixes a reinforcing bar as a steel material to the steel material via an adhesive. The reinforcement structure 720 shown in FIG. 14(a) is formed by adhering the edge receiver 7-3 as a steel plate and the end of the wire rod (hanging bolt) 7-1 as a steel material with an adhesive 713. The adhesive is arranged to cover the semi-peripheral surface of the wire rod 7-1 on the edge receiver side, and an adhesive portion 713a having a triangular prism shape with a thickness and covering the surface of the wire rod 7-1 is formed on the front and back on the edge receiver surface. Thereby, a reinforcement structure that enables strong adhesion and exhibits sufficient strength is configured. Further, there is no risk of fire at the site like welding, there is no cross-sectional loss of the wire rod 7-1, the surface is not rough, and there is no rusting. (b) The reinforcement structure 720 shown is formed with an adhesive portion 713a by adhering the edge receiver 7-3 as a steel plate and the central portion of the wire rod (hanging bolt) 7-1 as a steel material with an adhesive 713. Other than that, it is the same as the example shown in (a). (c) shows, for reference, an example in which the wire rods 7-1 are adhered to each other with an adhesive 713. By overlapping and joining the wire rods with each other via an adhesive in this way, the extension work of the wire rods at the site can be made simple.

[0027] As described above, the reinforcement structure of the present invention is applicable to columns, beams, joists, girts, braces, joints or panel zones in building structures. Therefore, it can be said that the above steel plate constitutes a column, beam, joist, girt, joint or panel zone in a building structure.

[0028] Note that the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.

Example

[0029] Hereinafter, it will be described more specifically with reference to examples. 〔Example 1〕 Using a 25-shaped W bar with a thickness of 0.8 mm (trade name, manufactured by Kirii Seisakusho Co., Ltd., a C-shaped steel having the same structure as the steel plate shown in FIG. 2), and using an adhesive TGA-3 (two-component acrylic adhesive, trade name, Cemedine Co., Ltd.), the adhesive area is 750 mm 2Adhered at (15 mm × 50 mm) to obtain a test piece of the reinforcing structure shown in Fig. 2. For the obtained test piece, a tensile test was conducted by a tensile strength test (JIS L 1096). As a result, the fastening state by the joint of the adhesive was maintained at a displacement of about 1 to 2 mm and a tensile load (N) of about 14,000 N. From this result, it was found that the structure can be reinforced by the reinforcing structure of the present invention so as to sufficiently resist excessive forces at the initial stage of stress application. [Example 2] A reinforcing structure shown in Fig. 2 was obtained in the same manner as in Example 1 except that the adhesive Y612Black (two-component acrylic adhesive, trade name, manufactured by Semedine Co., Ltd.) was used. When the tensile strength of the obtained test piece was measured in the same manner as in Example 1, almost the same results as in Example 1 were obtained. [Example 3] Using a 25-shaped W bar with a thickness of 0.8 mm (trade name, manufactured by Kirii Seisakusho Co., Ltd., a C-shaped steel having the same structure as the steel plate shown in Fig. 3), using the adhesive TGA-3 (two-component acrylic adhesive, trade name, manufactured by Semedine Co., Ltd.), the adhesive area was 750 mm 2 Adhered at (15 mm × 50 mm). In addition, three screw members were provided on the adhesive surface and fastened with a fastening member to obtain a test piece of the reinforcing structure shown in Fig. 3. For the obtained test piece, a tensile strength test (JIS L 1096) was conducted in the same manner as in Example 1. As a result, although the breakage of the joint by the adhesive occurred at a displacement of about 1 to 2 mm and a tensile load (N) of about 14,000 N in the same manner as in Example 1, the fastening state of the fastening portion by the adhesive was maintained. Then, the resistance by the screw member showed an effect at a tensile strength of about 6000 N, and a resistance of about 5000 N in tensile strength was shown up to a displacement of about 15 mm. From this result, it was found that the structure can be reinforced by the reinforcing structure of the present invention shown in Fig. 3 so as to sufficiently resist excessive forces at the initial stage of stress application and also show stickiness thereafter and maintain the fastening state until the displacement becomes large. [Example 4] A reinforcing structure shown in Fig. 3 was obtained in the same manner as in Example 3 except that the adhesive Y612Black (two-component acrylic adhesive, trade name, manufactured by Semedine Co., Ltd.) was used. When the tensile strength of the obtained test piece was measured in the same manner as in Example 3, almost the same results as in Example 3 were obtained. 〔Example 5〕 A test piece of a reinforcement structure using only screws was obtained in the same manner as in Example 3, except that the number of screws was 6 or 3 and no adhesive was used. When the tensile strength of the obtained test piece was measured in the same manner as in Example 3, the strength up to an initial displacement of 1 to 2 mm was about 13,000 N for 6 screws and about 6,000 N for 3 screws. Thereafter, the endurance was shown up to a displacement of about 15 mm in the same manner as in Example 3. The tensile strength was about 13,000 N for 6 screws and the resistance was about 5,000 N to 6,000 N for 3 screws. From these results, it was found that the structure can be reinforced so as to show stickiness and maintain the tightened state until the displacement becomes large. 〔Example 6〕 Using a 25-shaped W bar with a thickness of 0.8 mm (product name, manufactured by Kirii Seisakusho Co., Ltd., C-shaped steel having the same structure as the steel plate shown in Fig. 3), and using an adhesive TGA-3 (two-component acrylic adhesive, product name, Semedain Co., Ltd.), the adhesive area was 2000 mm 2 (20 mm × 100 mm) for bonding. In addition, 6 screws were provided on the bonding surface and fastening was also performed with a fastening member to obtain a test piece of the reinforcement structure shown in Fig. 3. For the obtained test piece, a tensile strength test (JIS L 1096) was carried out in the same manner as in Example 1. As a result, the fastening of the joint by the adhesive was maintained at a displacement of about 1 to 2 mm and a tensile load (N) of 19,000 N or more. Thereafter, the resistance by the screws showed an effect at a tensile strength of 10,000 N to 12,000 N, and the resistance of the tensile strength within this range was shown up to a displacement of about 17 mm. When the displacement exceeded 17 mm, the screws came out. From these results, it was found that by increasing the adhesive area and at the same time increasing the number of screws, it is possible to highly resist excessive forces at the initial stage of stress application and the strength and displacement showing stickiness thereafter are further increased. 〔Example 7〕 A test piece of the reinforcement structure was obtained in the same manner as in Example 6, except that the number of screws was three. For the obtained test piece, a tensile strength test (JIS L 1096) was conducted in the same manner as in Example 1. As a result, the tensile strength after breakage occurred in the fastening part by the adhesive was 7000 N to 5000 N, and the displacement at which the screw came out was about 16 mm. However, the same effect as in Example 6 was obtained. [Example 8] A test piece of the reinforcement structure was obtained in the same manner as in Example 6, except that no adhesive was used. For the obtained test piece, a tensile strength test (JIS L 1096) was conducted in the same manner as in Example 1. As a result, the tensile strength at a displacement of about 1 to 2 mm was about 13000 N, but the screw did not come out up to a displacement of 15 mm under a tensile load of 10000 N or more. [Example 9] A test piece of the reinforcement structure was obtained in the same manner as in Example 6, except that no screws were used. For the obtained test piece, a tensile strength test (JIS L 1096) was conducted in the same manner as in Example 1. As a result, the joint part by the adhesive was in a fastened state up to a displacement of about 1 to 2 mm and a tensile load (N) of about 18000 N. Thus, it was found that the reinforcement structure of the present invention fastened by the adhesive exhibits very high strength. [Example 10] Using a 25-shaped W bar with a thickness of 0.8 mm (trade name, manufactured by Kirii Seisakusho Co., Ltd., C-shaped steel having the same structure as the steel plate shown in Fig. 5), three screws were used for fastening with a fastening member. Also, the adhesive TGA-3 (two-component acrylic adhesive, trade name, Semedine Co., Ltd.) was previously used on the 25W bar, and a steel plate ss400 (JIS G3101) with a size of 2000 mm 2 (20 mm × 100 mm) was adhered, and then fastening was performed with screws. Thereby, a test piece of the reinforcement structure shown in Fig. 5 was obtained. For the obtained test piece, a tensile strength test (JIS L 1096) was conducted in the same manner as in Example 1. As a result, the resistance by the screw showed an effect at a tensile strength of about 10000 N, and the resistance of the tensile strength within this range was shown up to a displacement of about 10 mm. When the displacement exceeded 10 mm, the screw came out. From this result, it was found that it is possible to resist excessive force. 〔Example 11〕 A test piece of the reinforcing structure was obtained in the same manner as in Example 10, except that six screw members were used. For the obtained test piece, a tensile strength test (JIS L 1096) was conducted in the same manner as in Example 1. As a result, the resistance by the screw members was effective with a tensile strength of 13,000 N or more, and the resistance of the tensile strength within this range was shown up to a displacement of about 15 mm. When the displacement exceeded 15 mm, the screw members came off. From this result, it was found that it was possible to resist excessive force.

Claims

1. A reinforcing structure for a building structure using a steel plate, wherein a steel material or a reinforcing plate of another part is adhered to a part of the steel plate via an adhesive.

2. A reinforcing structure for a building structure using a steel plate, wherein the steel plate and the steel material of the other part or the reinforcing plate are fastened using a fastening member, and a auxiliary plate is further adhered to the steel material of the other part or the reinforcing plate with respect to the steel plate via an adhesive for auxiliary plate.

3. The reinforcing structure according to Claim 2, wherein the steel plate and the steel material of the other part or the reinforcing plate are further adhered via an adhesive.

4. The reinforcing structure according to Claim 1 or 2, wherein the thickness of the steel plate to be reinforced is 0.4 to 8.0 mm.

5. The reinforcing structure according to Claim 1 or 3, wherein the adhesive is an acrylic adhesive or an epoxy adhesive, and the viscosity is 1 to 100 pas for the acrylic type and 10 to 150000 pas for the epoxy type.

6. The reinforcing structure according to Claim 1 or 2, wherein the steel plate is a steel plate constituting a column, a beam, a joist, a girt, a brace, a joint or a panel zone in a building structure.

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