Method of installing new components and structure

Abstract

To provide an installation method for new members that can efficiently install new members to existing buildings, and a structure with new members attached to the existing frame.SOLUTION: In a structure 10, a brace 16 is newly attached to an existing column 11 and an existing beam 12. A plurality of gusset pieces 21 to 26 are arranged and fixed to the existing column 11 and the existing beam 12 by solid phase bonding. Next, a gusset plate 15, one side of which is fixed by a plurality of gusset pieces 21 to 24, is fixed. Further, the brace 16 is fixed to the gusset plate 15 .SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a method for attaching a new member, such as a reinforcing member, to an existing structure, and to a structure in which a new member is attached to an existing structure. [Background technology]

[0002] In order to reinforce existing buildings against earthquakes, braces are provided in the column-beam structure of the existing building (see, for example, Patent Document 1). This brace is made by fixing gusset plates to the corners of the existing columns and beams by welding, and then fixing the braces to the gusset plates.

[0003] On the other hand, bonding is achieved by heating and softening the joining materials in a solid state without melting them, and then applying pressure to cause plastic deformation. How to Solid-state welding is known as a method for joining metal materials (see, for example, Patent Document 2). The method for solid-state joining of metal materials described in this document includes a first step in which ends of one material to be joined and the other material to be joined are brought into contact with each other to form a joining interface, and pressure is applied in a direction substantially perpendicular to the joining interface, and a second step in which the temperature of the vicinity of the joining interface is raised to the joining temperature by an external heating means. Here, the pressure applied in the first step is set to be equal to or greater than the yield strength of the one material to be joined and / or the other material to be joined at a desired joining temperature. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2019-138089 A [Patent Document 2] International Publication No. 2019 / 181360 Summary of the Invention [Problem to be solved by the invention]

[0005] However, when welding gusset plates for installing new braces to existing structures, sparks can occur during welding. In order to prevent sparks from affecting the surrounding area, adequate protection was provided during welding work. Also, when welding on existing structures, protection can be difficult depending on the welding location. [Means for solving the problem]

[0006] A method for installing a newly installed member that solves the above-mentioned problems is a method for installing a newly installed member to an existing structure, and includes a first step of fixing a plurality of fixing members to the existing structure by solid-state welding, a second step of fixing an intermediate member with the plurality of fixing members, and a third step of fixing the newly installed member to the intermediate members.

[0007] In addition, a structure that solves the above-mentioned problems is a structure in which a newly constructed member is attached to an existing structure, wherein a plurality of fixing members are fixed to the existing structure by solid-state welding, an intermediate member is fixed to the plurality of fixing members, and the newly constructed member is fixed to the intermediate members. Effect of the Invention

[0008] According to the present invention, new components can be efficiently attached to an existing building. [Brief description of the drawings]

[0009] [Figure 1] FIG. 2 is a front view of a structure in which a new member is attached to an existing frame in the first embodiment. [Diagram 2] 2 is a cross-sectional view taken along line 2-2 in FIG. 1. [Diagram 3] 3 is a cross-sectional view taken along line 3-3 in FIG. 1 . [Figure 4] FIG. 4 is an explanatory diagram illustrating a method for attaching a new member in the first embodiment. [Diagram 5] FIG. 4 is an explanatory diagram illustrating a method for attaching a new member in the first embodiment. [Figure 6] A front view of a structure in which a new member is attached to an existing frame in the second embodiment. [Figure 7] Cross-sectional view taken along line 7-7 in Figure 6. [Figure 8] FIG. 11 is an explanatory diagram illustrating a mounting method for mounting a new member in the second embodiment. [Figure 9] FIG. 11 is an explanatory diagram illustrating a mounting method for mounting a new member in the second embodiment. [Figure 10] A front view of a modified example in which a new member is attached via an attachment member. [Figure 11] 11 is a cross-sectional view taken along line 11-11 in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] (First embodiment) Hereinafter, a first embodiment will be described with reference to Figs. 1 to 5, which embodies a method for attaching a newly installed member and a structure in which a newly installed member is attached to an existing structure. In this embodiment, a brace 16 is attached as a newly installed member by using gusset pieces 21 to 26 as fixed members fixed by linear friction stir welding as solid-state welding. Linear friction welding (LFW) is a joining method that uses frictional heat generated when materials are pressed against each other and rubbed together by linear motion as a heat source. In addition, linear friction stir welding (LFSW) can introduce large strain near the interface by utilizing the principle of linear friction welding. Specifically, unlike conventional joining in which the main mechanism is the formation of a new surface by sufficient discharge of material softening and burrs, strong strain processing is applied at low temperature and joining is performed by recrystallization. This allows steel materials to be joined at a relatively low temperature without using tools such as rotary tools.

[0011] As shown in Fig. 1, the structure 10 of this embodiment is configured by disposing braces 16 diagonally on a column-beam frame as an existing structure, via gusset plates 15 as intermediate members. Here, the braces 16 are attached to both diagonal corners of the column-beam frame, but since the fixing method at both corners is the same, the explanation will be focused on the lower corner.

[0012] The column-beam structure is composed of existing columns 11 and existing beams 12 made of H-shaped steel. In this embodiment, multiple gusset pieces 21, 22 are arranged at equal intervals with gaps between them and fixed by linear friction stir welding to the side surface of the existing column 11. Furthermore, multiple gusset pieces 23, 24 are arranged at equal intervals with gaps between them and fixed by linear friction stir welding to the upper surface of the existing beam 12. These gusset pieces 21 to 24 are arranged to extend in the same plane.

[0013] The number of gusset pieces 21 to 24 is set to be equal to or greater than the strength when the gusset plate 15 is fixed to the existing column 11 and the existing beam 12 by welding. In this case, the strength is determined by taking into consideration the area where the gusset pieces 21 and 22 are joined to the existing column 11 and the area where the gusset pieces 23 and 24 are joined to the existing beam 12.

[0014] The gusset pieces 21 and 23 each have a rectangular plate shape with a short side measuring, for example, 50 mm to 60 mm. The gusset piece 22 fixed to the existing column 11 at the position closest to the existing beam 12 and the gusset piece 24 fixed to the existing beam 12 at the position closest to the existing column 11 have the same size and a pentagonal plate shape with some of the corners missing so as not to interfere with each other. Each of the gusset pieces 21 to 24 has a locking hole h1 formed at approximately the same position.

[0015] On the other hand, the gusset plate 15 is a pentagonal plate member having right-angled vertices. In this embodiment, the gusset plate 15 has a plurality of (seven) fixing holes (through which the bolts B1 are inserted) formed in a row at positions spaced apart from the ends on each of two perpendicular sides. These fixing holes are provided in correspondence with the locking holes h1 of the gusset pieces 21 to 24.

[0016] Fig. 2 is a cross-sectional view taken along line 2-2 in Fig. 1. As shown in Fig. 2, the gusset pieces 21 to 24 are fixed to two sides of the gusset plate 15 with bolts B1 and nuts N1 which are inserted through locking holes h1 and fixing holes of the gusset plate 15.

[0017] 1, end fixing holes (through which bolts B3 are inserted) are provided at positions offset from the fixing holes aligned in a row on each side at the ends of the sides adjacent to these two sides of the gusset plate 15. Furthermore, multiple (six) locking holes 15h are formed in the center of the gusset plate 15.

[0018] A gusset piece 25 is fixed to the side surface of the existing column 11 above the gusset piece 21 by linear friction stir welding. This gusset piece 25 has the same rectangular plate shape as the gusset piece 21. The gusset piece 25 extends in a direction perpendicular to the gusset pieces 21 and 22 (in a direction parallel to the upper surface of the existing beam 12).

[0019] Furthermore, a gusset piece 26 is fixed to the right of the gusset piece 23 (opposite the existing column 11) on the upper surface of the existing beam 12 by linear friction stir welding. This gusset piece 26 has the same rectangular plate shape as the gusset piece 23. The gusset piece 26 extends in a direction perpendicular to the gusset pieces 23 and 24 (in a direction parallel to the side surface of the existing column 11).

[0020] The gusset pieces 25 and 26 also have locking holes (through which the bolts B2 are inserted). A deformation restraint member 27 is attached to the gusset pieces 25, 26. The deformation restraint member 27 is composed of an L-shaped angle. The deformation restraint member 27 is a member for restraining deformation in a direction different from the planar direction of the gusset plate 15 (out-of-plane deformation). A fixing hole (through which the bolt B2 is inserted) is formed in a first surface of the deformation restraint member 27, and an engagement hole 27h is formed in a second surface. When the fixing hole of the deformation restraint member 27 is aligned with the engagement holes of the gusset pieces 25, 26, the engagement hole 27h of the deformation restraint member 27 is disposed in correspondence with the end fixing hole of the gusset plate 15.

[0021] The deformation restraint member 27 is fixed to the gusset pieces 25, 26 with a bolt B2 and a nut N2 that are inserted through the fixing hole in this first surface and the locking holes of the gusset pieces 25, 26. Furthermore, the deformation restraint member 27 fixes the end of the gusset plate 15 with a bolt B3 and a nut N3 that are inserted through this locking hole 27h and the end fixing hole of the gusset plate 15.

[0022] An end of a brace 16 is fixed to the center of the gusset plate 15. The brace 16 is a reinforcing member that reinforces the earthquake resistance strength of the column-beam frame. The brace 16 is formed with multiple (six) fixing holes 16h. These fixing holes 16h are provided at positions corresponding to the locking holes 15h of the gusset plate 15.

[0023] Fig. 3 is a cross-sectional view taken along line 3-3 in Fig. 1. As shown in Fig. 3, the brace 16 is fixed to the gusset plate 15 by a bolt B5 and a nut N5 which are inserted through the fixing hole 16h and the locking hole 15h of the gusset plate 15. In this embodiment, the intermediate member is made up of the gusset plate 15, the bolts B1 to B3, B5, the nuts N1 to N3, N5, and the deformation restraint member 27.

[0024] (Method of mounting the structure 10) Next, a method for attaching the brace 16 to the existing column 11 and the existing beam 12 will be described with reference to Figs.

[0025] First, the gusset pieces 21, 22, and 25 are fixed to the above-mentioned positions on the side surface of the existing column 11 by linear friction stir welding. Specifically, using a linear friction stir welding device, the gusset pieces 21, 22, and 25 are heated and softened by vibrating at high speed while in contact with the side surface of the existing column 11, and are then pressed against the side surface with high pressure to be fixed. In the same manner, the gusset pieces 23, 24, and 26 are fixed to the upper surface of the existing beam 12 by linear friction stir welding.

[0026] As a result of the above, as shown in FIG. 4, gusset pieces 21, 22, and 25 are erected on the side surfaces of the existing column 11, and gusset pieces 23, 24, and 26 are erected on the upper surface of the existing beam 12 by linear friction stir welding.

[0027] Then, as shown in FIG. 5, the bolt B2 is inserted into the through hole that aligns the locking holes of the gusset pieces 25, 26 with the fixing hole of the deformation restraint member 27, and the nut N2 is screwed onto this bolt B2.

[0028] Furthermore, the gusset plate 15 is positioned so that the fixing holes of the gusset plate 15 are aligned with the locking holes h1 of the gusset pieces 21-24. Then, the locking holes h1 of the gusset pieces 21-24 are aligned with the fixing holes of the gusset plate 15, and the bolt B1 is inserted and a nut N1 is screwed onto this bolt B1. Furthermore, the bolt B3 is inserted into a through hole that aligns the locking hole 27h of the deformation restraint member 27 with the end fixing hole of the gusset plate 15, and a nut N3 is screwed onto this bolt B3.

[0029] Then, as shown in FIG. 1, the central locking hole 15h of the gusset plate 15 is aligned with the fixing hole 16h of the brace 16, the bolt B5 is inserted, and the nut N5 is screwed onto this bolt B5.

[0030] (action) In this embodiment, multiple gusset pieces 21-24 are arranged and fixed to the existing column 11 and existing beam 12 by linear friction stir welding. Then, the brace 16 is fixed to the gusset pieces 21-24 via the gusset plate 15. This makes it possible to achieve a strength equivalent to that achieved when the gusset plate 15 is welded to the existing structure. Furthermore, when the gusset pieces 21-24 are fixed to the existing structure, the generation of sparks can be suppressed.

[0031] According to this embodiment, the following effects can be obtained. (1-1) In this embodiment, a plurality of gusset pieces 21-24 are fixed to the existing column 11 and the existing beam 12 by linear friction stir welding. Then, the end of the brace 16 is fixed to these gusset pieces 21-24 via the gusset plate 15. As a result, the brace 16 can be fixed via the gusset pieces 21-24 fixed to the existing structure by linear friction stir welding that does not generate sparks, so the brace 16 can be safely fixed to the existing structure without curing.

[0032] (1-2) In this embodiment, the multiple gusset pieces 21-24 are arranged in a row and fixed to the existing structure, and two sides of the gusset plate 15 are fixed to the multiple gusset pieces 21-24. In linear friction stir welding, if the fixing area is reduced, the device for performing linear friction stir welding can be made smaller. Therefore, by reducing the size of the gusset pieces 21-24 to be fixed, the gusset pieces 21-24 can be efficiently fixed to the existing structure by linear friction stir welding at the site where the existing structure is located. Also, since the gusset pieces 21-24 are arranged in a row, the gusset plate 15, which has two wide sides, can be fixed linearly (by two sides).

[0033] (1-3) In this embodiment, a deformation restraint member 27 is provided via gusset pieces 25, 26 fixed to the existing column 11 and the existing beam 12 by linear friction stir welding, and this deformation restraint member 27 is fixed to the gusset plate 15. This makes it possible to suppress deformation of the gusset plate 15 in a direction different from the surface direction of the gusset plate 15.

[0034] Second embodiment Next, a second embodiment will be described, which embodies a method for attaching a newly installed member and a structure in which a newly installed member is attached to an existing structure. In this embodiment, the newly installed member is attached using screw shafts 41-43 as fixed members fixed by rotary friction welding as solid-state welding instead of the linear friction stir welding of the above embodiment. In this embodiment, the same parts as those in the above embodiment are given the same reference numerals, and detailed description thereof will be omitted. This rotary friction welding is a joining method in which materials are rotated and pressed against each other with a certain pressure (friction pressure), and the temperature of the joining surface rises due to frictional heat, forming a high-temperature layer.

[0035] As shown in FIG. 6, the structural body 40 of this embodiment is configured by arranging a brace 16 diagonally via a gusset plate 15 in a column-beam structure having an existing column 11 and an existing beam 12 as an existing structure, similar to the first embodiment described above.

[0036] In this embodiment, a plurality of screw shafts 41, 42 serving as fixing members are fixed to the side surface of the existing column 11 by rotary friction welding. Also, a plurality of screw shafts 41, 43 serving as fixing members are fixed to the upper surface of the existing beam 12 by rotary friction welding. The plurality of screw shafts 41 are arranged at equal intervals with gaps therebetween, and the number of screw shafts used is equal to or greater than the strength of the gusset plate 15 fixed to the existing column 11 and existing beam 12 by welding. Gusset pieces 46 to 48 are attached to each screw shaft 41. Each of the gusset pieces 46 to 48 is formed of an L-shaped angle formed by integrating two plate members.

[0037] Fig. 7 is a cross-sectional view taken along line 7-7 in Fig. 6. As shown in Fig. 7, a fixing hole h3 through which the screw shaft 41 passes is formed in the first surface portion of each of the gusset pieces 46-48.

[0038] 6, a locking hole h4 for fixing the gusset plate 15 is formed on the second surface of the gusset pieces 46 to 48. The second surface of the gusset piece 47 fixed to the existing column 11 at a position closest to the existing beam 12 and the second surface of the gusset piece 48 fixed to the existing beam 12 at a position closest to the existing column 11 have the same size and a pentagonal plate shape with some corners missing so as not to interfere with each other.

[0039] The screw shaft 42 is fixed to the side surface of the existing column 11 above the screw shaft 41 by rotary friction welding. The screw shaft 43 is fixed to the upper surface of the existing beam 12 to the right of the screw shaft 41 (opposite the existing column 11) by rotary friction welding. A gusset piece 49 is attached to the screw shafts 42 and 43. This gusset piece 49 is an L-shaped angle having the same shape as the gusset piece 46, and has a first surface portion in which a fixing hole h3 is formed and a second surface portion in which a locking hole h4 is formed. The gusset piece 49 is fixed to the screw shafts 42 and 43 by screwing a nut N6 with the fixing hole h3 of the gusset piece 49 inserted therethrough. In this case, the second surface portion of the gusset piece 49 fixed to the screw shaft 42 is arranged in a direction perpendicular to the second surface portion of the gusset piece 46 fixed to the existing column 11 (parallel to the upper surface of the existing beam 12). In addition, the second surface of the gusset piece 49 fixed to the screw shaft 43 is positioned in a direction perpendicular to the second surface of the gusset piece 46 fixed to the existing beam 12 (in a direction parallel to the side of the existing column 11).

[0040] The deformation restraint member 27 is fixed along the second surface portion of the gusset piece 49. Specifically, the deformation restraint member 27 is fixed to the gusset piece 49 by a bolt B7 and a nut N7 which are inserted into a fixing hole formed in the gusset piece 49 and a fixing hole in the deformation restraint member 27.

[0041] Two sides of the gusset plate 15 are fixed to the gusset pieces 46-48 by bolts B8 and nuts N8 inserted through the locking holes h4 of the second surface portion and the multiple fixing holes of the gusset plate 15. Therefore, the gusset plate 15 is fixed to the screw shafts 41, 42, 43 fixed to the existing column 11 and the existing beam 12 via the gusset pieces 46-49 and the deformation restraint member 27. In this embodiment, the intermediate member is composed of the gusset pieces 46-49, the gusset plate 15, the bolts B3, B5-B8, the nuts N3, N5-N8, and the deformation restraint member 27.

[0042] (Method of mounting the structure 40) Next, a method of attaching the braces 16 to the existing columns 11 and the existing beams 12 in order to construct the above-mentioned structural body 40 will be described with reference to Figs. 6, 8 and 9.

[0043] First, the screw shafts 41 to 43 are fixed by rotational friction welding to the above-mentioned positions on the side surface of the existing column 11 and the upper surface of the existing beam 12. Specifically, using a device for performing rotational friction welding, the screw shafts 41 to 43 are heated and softened by rotating them at high speed while in contact with the side surface of the existing column 11 or the upper surface of the existing beam 12, and then pressed against them with high pressure to fix them. As a result, as shown in FIG. 8, the screw shafts 41 and 42 are erected on the side surface of the existing column 11, and the screw shafts 41 and 43 are erected on the upper surface of the existing beam 12 by rotational friction welding.

[0044] 9, the screw shaft 41 is inserted through the fixing holes h3 of the gusset pieces 46 to 48, and the nut N6 is screwed in. Furthermore, the screw shafts 42 and 43 are inserted through the fixing holes h3 of the gusset piece 49, and the nut N6 is screwed in.

[0045] 6, the locking hole h4 of the gusset piece 49 is aligned with the fixing hole of the deformation restraint member 27, and the bolt B7 is inserted and fixed with the nut N7. This fixes the deformation restraint member 27 to the gusset piece 49.

[0046] Furthermore, the locking holes h4 of the gusset pieces 46-48 are aligned with the fixing holes arranged on two sides of the gusset plate 15, and the bolts B8 are inserted through them and fixed with nuts N8. This fixes the gusset plate 15 to the gusset pieces 46-48. Thereafter, similarly to the above embodiment, the end portion of the gusset plate 15 is fixed to the deformation restraint member 27, and the brace 16 is fixed to the gusset plate 15.

[0047] (action) In this embodiment, a plurality of screw shafts 41 are arranged and fixed to the existing columns 11 and existing beams 12 by rotary friction welding. Then, the brace 16 is fixed to the screw shafts 41 via the gusset pieces 46-48 and the gusset plate 15. As a result, similar to the first embodiment, it is possible to realize a strength equivalent to that in the case where the gusset plate 15 is welded to the existing structure, and it is possible to suppress the generation of sparks when the screw shafts 41 to which the gusset pieces 46-48 are attached are fixed to the existing structure.

[0048] In this embodiment as well, multiple screw shafts 41 are fixed by rotary friction welding, and the ends of the brace 16 are fixed to these screw shafts 41 via gusset pieces 21 to 24 and gusset plate 15, thereby obtaining effects similar to those of (1-1) to (1-3) above.

[0049] This embodiment can be modified as follows: This embodiment and the following modifications can be combined with each other to the extent that there is no technical contradiction. In the first embodiment, the gusset pieces 21 to 24 have a plate shape with one locking hole formed therein to engage with the fixing hole of the gusset plate 15. The gusset pieces fixed by solid-state welding are not limited to these shapes. For example, the gusset pieces may be shaped such that a plurality of gusset pieces 21 to 24 are integrated together.

[0050] Specifically, as shown in Figs. 10 and 11, a structure 60 including a plurality of gusset pieces 61 to 66 may be used. The gusset pieces 61 to 63 are fixed to the side surface of the existing column 11 by linear friction stir welding, with gaps between them, and the gusset pieces 64 to 66 are fixed to the upper surface of the existing beam 12 by linear friction stir welding, with gaps between them. The gusset pieces 61 and 66 have a rectangular plate shape in which two locking holes h6 corresponding to the two fixing holes of the gusset plate 15 are formed. The gusset pieces 62 and 65 have a rectangular plate shape in which three locking holes h6 corresponding to the three fixing holes of the gusset plate 15 are formed. The gusset pieces 63 and 64 have a pentagonal plate shape in which two locking holes h6 corresponding to the two fixing holes of the gusset plate 15 are formed, and some corners are cut out so that they do not interfere with each other.

[0051] In the second embodiment, one gusset piece is fixed to each screw shaft 41. The shape of the gusset piece fixed to the screw shaft fixed by rotary friction welding is not limited to this. For example, one gusset piece may be fixed to a plurality of screw shafts 41. Specifically, an L-shaped angle gusset piece having one or a plurality of first surface portions formed with holes through which the screw shafts are inserted and second surface portions such as gusset pieces 61 to 66 shown in FIG. 10 may be used.

[0052] In the above embodiment, the deformation restraint members 27 are provided on both ends of the gusset plate 15. The shape of the deformation restraint members 27 is not limited to this. Also, the deformation restraint members 27 may be omitted.

[0053] In the first embodiment, the gusset pieces 21-26 are fixed to the existing column 11 and the existing beam 12, and in the second embodiment, the screw shafts 41-43 are fixed to the existing column 11 and the existing beam 12. The existing structure to which the fixing members are attached by using solid-state welding in order to attach new members is not limited to the existing column 11 and the existing beam 12.

[0054] In the above embodiment, the brace 16, which is a reinforcing member, is attached as the new member. However, the new member to be attached is not limited to a reinforcing member, and may be any member that is newly attached. In the first embodiment, the gusset pieces 21-26 are fixed to the existing structure by linear friction stir welding as the solid-state welding, and in the second embodiment, the screw shafts 41-43 are fixed to the existing structure by rotary friction welding as the solid-state welding. The solid-state welding for fixing the fixing members to the existing structure is not limited to these joining methods, and it is sufficient if a plurality of fixing members can be fixed by solid-state welding that does not generate sparks.

[0055] Next, the technical ideas that can be understood from the above embodiment and other examples will be described below. (a) in the first step, the fixing members are fixed in a row, 2. The method for attaching a newly installed member according to claim 1, wherein the second step includes fixing an intermediate member having an intervening member, one side of which is fixed by the plurality of fixing members.

[0056] (b) The structure according to claim 2, characterized in that the intermediate member has an intervening member, one side of which is fixed directly or via a piece member by the multiple fixing members fixed in a row. (c) The structure according to (b), wherein the plurality of fixing members include a fixing member for fixing a restraining member that restrains the out-of-plane deformation of the interposed member.

[0057] (d) The structure described in (b) or (c) in claim 2, characterized in that the fixing member is a plate-shaped gusset piece fixed to the existing structure by linear friction stir welding as the solid-state welding, and the multiple gusset pieces fix one side of a gusset plate as the interposed member. (e) The structure described in any one of (b) to (d), characterized in that the fixing member is a screw shaft whose tip is fixed to the existing structure by rotary friction welding as the solid-state welding, a gusset piece is fixed to each of the screw shafts, and the multiple gusset pieces fix one side of a gusset plate as the interposed member. [Explanation of symbols]

[0058] B1, B2, B3, B5, B7, B8...bolts, h1, h4, 15h, 27h...engagement holes, h3, 16h...fixing holes, N1, N2, N3, N5, N6, N7, N8...nuts, 10, 40, 60...structural body, 11...existing column as existing structure, 12...existing beam as existing structure, 15...gusset plate as intervening member, 16...brace as newly installed member, 21, 22, 23, 24, 25, 26, 61, 62, 63, 64, 65, 66...gusset pieces as fixing members, 27...deformation restraint member, 41, 42, 43...screw shaft as fixing member, 46, 47, 48, 49...gusset pieces that constitute the intermediate member.

Claims

1. A method for attaching a new member that reinforces an existing structure to the existing structure, comprising: A first step of fixing a plurality of fixing members to a surface of the existing structure by solid-state bonding; a second step of fixing the intermediate member by the plurality of fixing members; and a third step of fixing the newly installed member to the intermediate member.

2. A structure in which a new member for reinforcing an existing structure is attached to the existing structure, A plurality of fixing members are fixed to the surface of the existing structure by solid-state welding, An intermediate member is fixed to the plurality of fixing members, A structure characterized in that the new member is fixed to the intermediate member.

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