Fixing structure for reinforcing member to structure, fixing method for reinforcing member to structure, and fixing member

Abstract

To provide a fixing structure of a reinforcement member to a structure which can suppress deformation of a structure, a fixing method for the same, and a fixing member used in the same.SOLUTION: A fixing member is mainly composed of a sandwiching member 3, a deformation preventive member 5, and a gusset plate 7. The sandwiching member 3 is a member which can sandwich and fix a web of a structure. The deformation preventive member 5 is joined to a rib part 11 of the sandwiching member 3. The sandwiching members 3 of the fixing members 1 and 1a are arranged so as to sandwich the web 25. The deformation preventive member 5 is arranged between mutual opposite faces of a flange 23, and a distance between ends of a pair of bolts 17 is made substantially equal to a distance between the flanges 23, and thereby the deformation preventive member 5 can be functioned as a bridging rod between the opposite flanges 23.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a fixing member to which a reinforcing member for reinforcing a structure is joined, and to a fixing structure and a fixing method for a reinforcing member to a structure using the fixing member. [Background technology]

[0002] Conventionally, existing structures have been reinforced against earthquakes by arranging reinforcing members such as braces. In this case, there is a method of joining the reinforcing members to columns and beams by welding. However, joining by welding cannot be used in sites where the use of fire is prohibited. In response to this, there is a method of fixing braces, etc. to columns using fixing members instead of welding (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-31890 A Summary of the Invention [Problem to be solved by the invention]

[0004] According to the method described in Patent Document 1, a reinforcing member can be fixed to a column or beam with a bolt. However, while the method described in Patent Document 1 is applicable to fixing a reinforcing member in the so-called strong axis direction (direction parallel to the web) of an H-shaped steel, for example, care must be taken when fixing a reinforcing member in the weak axis direction (direction perpendicular to the web).

[0005] 12 is a diagram showing a fixing structure 100 of reinforcing members in which reinforcing members 107a, 107b are joined in the weak axis direction of a structure 111. The structure 111 is composed of a pillar and a beam. The pillar and the beam are composed of, for example, H-shaped steel in which a pair of flanges 113 are joined by a web 115. In the fixing structure 100, the reinforcing members 107a, 107b are newly fixed to the existing structure 111. In the example shown in the figure, the reinforcing member 107a is arranged on a diagonal line between the pillar and the beam, and the reinforcing member 107b is arranged between adjacent pillars and approximately parallel to the beam.

[0006] In order to fix such reinforcing members 107a and 107b to the structure 111, for example, fixing members 101 and 103 are used. The fixing member 101 is a member to which a gusset plate 105 is joined. The gusset plate 105 can be joined to the reinforcing members 107a and 107b.

[0007] Fixing member 101 and fixing member 103 are disposed on either side of web 115 of the pillar, and are fixed with a bolt penetrating web 115. That is, fixing member 101 and fixing member 103 sandwich web 115, and both are fixed with a bolt.

[0008] Fig. 13(a) is a cross-sectional view showing the fixing structure of fixing members 101, 103 to which reinforcing member 107a is fixed. Fixing member 101 to which gusset plate is joined is fixed to the column by fixing member 103 from the back side of web 115. At this time, fixing member 101 to which gusset plate 105 is joined receives a tensile force from reinforcing member 107a and transmits it to web 115. Note that ribs 109 are arranged on fixing member 103 so as to be able to withstand this force. Note that fixing bolts 117 are arranged to avoid the areas of ribs 109.

[0009] As described above, the structure 111 consisting of the web 115 and the flange 113 has a strong axis direction and a weak axis direction, and as shown in the figure, the strength is weaker in the direction approximately perpendicular to the web 115 (weak axis direction) than in the direction parallel to the web 115 (strong axis direction).

[0010] 13(b) is a conceptual diagram when a tensile force (X in the figure) is applied to the reinforcing member 107a. As shown in the figure, when an axial force is applied to the reinforcing member 107a, the force is applied in the weak axis direction of the structure 111, which may cause deformation of the web 115 and local buckling of the flange 113. When the structure 111 is deformed in this way, the performance (proof strength, deformation performance, etc.) of the structure 111 may decrease. For this reason, a fixing structure is required that can join a reinforcing member in the weak axis direction of the structure 111 and suppress deformation.

[0011] The present invention has been made in consideration of such problems, and aims to provide a structure and method for fixing a reinforcing member to a structure that is capable of suppressing deformation of the structure, and a fixing member used therein. [Means for solving the problem]

[0012] In order to achieve the above-mentioned object, a first invention is a structure for fixing a reinforcing member to a structure in which a pair of flanges are connected by a web, the structure comprising: a pair of clamping members that are fixed by sandwiching the web; a deformation prevention member that is disposed between the flanges in the vicinity of a fixed portion of the clamping members; and a reinforcing member that is joined to a gusset plate that is joined to at least one of the clamping members; the deformation prevention member is composed of a female thread portion formed toward each of the flanges and a bolt screwed into each of the female thread portions, the clamping member and the deformation prevention member are integrally formed, the width of the clamping member is smaller than the width between the flanges, and the distance between the ends of the pair of bolts is approximately equal to the width between the flanges, This is a structure for fixing a reinforcing member to a structure, characterized in that the deformation prevention member is arranged to span between the opposing surfaces of the flanges, thereby making it possible to prevent the opposing flanges from deforming toward each other.

[0013] The above The deformation prevention member is disposed at a position away from the web sandwiched between the pair of clamping members. is desirable. It is desirable that the clamping member be in surface contact with the web at a substantially central portion between the flanges.

[0014] The deformation prevention member may consist of a female threaded portion formed toward each of the flanges and a bolt screwed into each of the female threaded portions, and by making the distance between the ends of a pair of the bolts approximately equal to the distance between the flanges, it may be possible to restrict deformation of the flanges so that they approach each other.

[0015] The structure may be H-shaped, and the deformation prevention members may be disposed on both sides of the web.

[0016] According to the first aspect of the present invention, by disposing the deformation prevention member between the flanges, it is possible to suppress deformation of the structure that would cause the flanges to approach each other.

[0017] In particular, since the clamping member and the deformation prevention member are integrally formed, the work of attaching the fixing member to the structure is easy, and the deformation prevention member can be prevented from falling off.

[0018] Furthermore, if the deformation prevention member is made up of female threads formed in the direction of each flange and bolts that screw into the female threads, the length between the ends of the deformation prevention member can be easily adjusted. Therefore, by shortening the bolts during installation, the installation work can be easily performed, and by extending the bolts according to the distance between the flanges after the clamping members are installed, it is possible to reliably suppress deformation of the web so that the flanges approach each other.

[0019] This type of fixing structure can also be applied when the structure is an H-shaped steel beam. In this case, by placing anti-deformation members on both sides of the web, it is possible to prevent the web from deforming in any direction.

[0020] A second invention is a fixing member for fixing a reinforcing member to a structure in which a pair of flanges are connected by a web, the fixing member comprising a clamping member capable of clamping and fixing the web, and a deformation prevention member joined to the clamping member and disposed between the flanges, the clamping member being joined to a gusset plate to which the reinforcing member is connected, and the deformation prevention members are disposed facing in mutually opposite directions, substantially perpendicular to the fixing direction of the clamping members. The deformation prevention member is composed of a female thread portion formed toward each of the flanges and a bolt screwed into each of the female thread portions, the clamping member and the deformation prevention member are integrally formed, the width of the clamping member is smaller than the width between the flanges, and the distance between the ends of the pair of bolts is approximately equal to the width between the flanges. The fixing member is characterized by the above.

[0021] According to the second aspect of the present invention, the reinforcing member can be attached also in the weak axis direction of the structure, making it possible to suppress deformation of the web.

[0022] A third invention is a method for fixing a reinforcing member to a structure in which a pair of flanges are connected by a web, the method comprising the steps of: fixing a pair of clamping members so as to sandwich the web, and arranging a deformation prevention member so as to span between the flanges near the fixing parts of the clamping members; and joining a reinforcing member to a gusset plate joined to at least one of the clamping members, the deformation prevention member is composed of a female thread portion formed toward each of the flanges and a bolt screwed into each of the female thread portions, the clamping member and the deformation prevention member are integrally formed, the width of the clamping member is smaller than the width between the flanges, and the distance between the ends of the pair of bolts is approximately equal to the width between the flanges, This method of fixing a reinforcing member to a structure is characterized in that the deformation prevention member is positioned between the opposing surfaces of the flanges, thereby preventing the opposing flanges from deforming toward each other.

[0023] After the clamping members are fixed to the web, the deformation prevention members may be caused to protrude in the directions of the opposing surfaces of the flanges and come into contact with the flanges.

[0024] According to the third aspect of the present invention, it is possible to easily obtain a fixing structure for a reinforcing member in which the reinforcing member is fixed in the weak axis direction of the structure.

[0025] In particular, after the clamping members are fixed to the web, the deformation prevention members are caused to protrude in the directions of the opposing surfaces of the flanges and come into contact with the flanges, making installation easy. Effect of the Invention

[0026] According to the present invention, it is possible to provide a structure and a method for fixing a reinforcing member to a structure, which are capable of suppressing deformation of the structure, and a fixing member used therein. [Brief description of the drawings]

[0027] [Figure 1] A perspective view of the fixing member 1 [Diagram 2] FIG. 4 is a front view of the fixing structure 20, taken along the arrow C in FIG. [Diagram 3] 2. (a) is a cross-sectional view taken along line AA in FIG. 2, and (b) is a cross-sectional view taken along line BB in FIG. [Figure 4]1A and 1B are diagrams showing a process of attaching a fixing member 1 to a structure 21. [Diagram 5] FIG. 2 is a diagram showing a fixing structure 20a. [Figure 6] FIG. [Figure 7] 1A is a front view showing a fixing structure 20c, and FIG. 1B is a cross-sectional view taken along line DD in FIG. [Figure 8] 6A is a front view showing a fixing structure 20d, and FIG. 6B is a cross-sectional view taken along line EE of FIG. [Figure 9] 4A is a front view showing a fixing structure 20e, and FIG. 4B is a cross-sectional view taken along line FF in FIG. [Figure 10] 13 is a diagram showing a method of attaching the fixing member 1g. [Figure 11] FIG. 1A is a front view showing a fixing structure 20f, and FIG. [Figure 12] FIG. [Figure 13] FIG. 2 is a view of the fixing structure 100 as seen from the fixing member 103 side. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0028] (First embodiment) The fixing member according to the embodiment of the present invention will be described below. The fixing member is a member for fixing a reinforcing member to a structure, and a pair of fixing members are used as a set. Fig. 1 is a perspective view showing one fixing member 1. The fixing member 1 mainly consists of a clamping member 3, a deformation prevention member 5, a gusset plate 7, etc.

[0029] The clamping member 3 is a member capable of clamping and fixing the web of the structure. The clamping member 3 has a plate-shaped clamping portion 9 and plate-shaped rib portions 11 formed near the ends of the clamping portion 9 in the height direction. The rib portions 11 protrude approximately perpendicularly to the clamping portion 9. In other words, the clamping member 3 is approximately U-shaped. Note that the clamping member 3 is not limited to the form shown in the figure. For example, the clamping portion 9 and the rib portion 11 do not have to be plate-shaped, and may be a block-shaped configuration in which the two are integrally formed.

[0030] A gusset plate 7 is disposed at approximately the center of the clamping portion 9 in the width direction, and is joined approximately perpendicularly to the clamping portion 9 and the rib portion 11. The gusset plate 7 is a portion to which a reinforcing member (such as a knee brace or a brace) is joined. The shape of the gusset plate 7 is not particularly limited. The clamping portion 9 has a plurality of bolt holes 19 formed at predetermined positions sandwiching the gusset plate 7. The bolt holes 19 are used when fixing to a structure to be described later. In other words, the hole axis direction of the bolt holes 19 is the direction in which the clamping members 3 are fixed to each other.

[0031] The deformation prevention member 5 is joined to the rib portion 11 of the clamping member 3. That is, the clamping member 3 and the deformation prevention member 5 are integrally formed. It is preferable that the deformation prevention member 5 is disposed at a position away from the clamping portion 9 (that is, on the tip side of the rib portion 11).

[0032] The deformation prevention members 5 are composed of a female threaded portion 13, nuts 15, bolts 17, etc. The deformation prevention members 5 are disposed between the flanges when fixed to a structure, which will be described later. In the example shown, a pair of deformation prevention members 5 are disposed on the outer surfaces of the rib portions 11 (the surfaces opposite the gusset plates 7). More specifically, a block-shaped member is disposed on the outer surface of the rib portions 11, and female threaded portions 13 are formed on both sides of the member in the width direction (the direction perpendicular to the fixing direction of the clamping member 3, the left-right direction in the figure).

[0033] In this way, the deformation prevention member 5 has female threads 13 formed on both sides in the width direction in opposite directions, and the bolts 17 are screwed into the female threads 13. Therefore, by adjusting the screwing length between the bolt 17 and the female threads 13, the protruding length of the bolt 17 from the female threads 13 can be adjusted. In other words, the distance between the heads of the bolts 17 on both sides can be adjusted. In this case, if necessary, the nut 15 can be screwed onto the bolt 17, so that the female threads 13 and the nut 15 can function as a so-called double nut. Therefore, loosening of the bolt 17 during use can be suppressed.

[0034] Next, a structure for fixing a reinforcing member to a structure using a fixing member 1 will be described. Fig. 2 is a front view of the fixing structure 20 (viewed from the arrow C in Fig. 3(a)), Fig. 3(a) is a cross-sectional view taken along line AA in Fig. 2, and Fig. 3(b) is a cross-sectional view taken along line BB in Fig. 2. During use, the direction parallel to the formation direction of the flanges 23 (the vertical direction in Fig. 2) is the height direction of the fixing member, and the opposing direction of the flanges 23 (the horizontal direction in Fig. 2) is the width direction of the fixing member. In the following description, illustration of the reinforcing member will be omitted.

[0035] The structure 21 is an H-beam (an H-shaped structure) in which a pair of flanges 23 that are approximately parallel to each other are connected by a web 25. The structure 21 is, for example, a pillar or beam of a building.

[0036] As shown in Figures 3(a) and 3(b), the fixing member 1 is disposed on one side of the structure 21 (web 25), and the fixing member 1a is disposed on the other side of the structure 21 (web 25). The fixing member 1a has a configuration substantially similar to that of the fixing member 1, but a rib portion 11a is disposed instead of the gusset plate 7. That is, in the fixing member 1a, the rib portion 11a is joined substantially perpendicularly to the clamping portion 9 and the rib portion 11.

[0037] The clamping members 3 of the fixing members 1, 1a are disposed so as to sandwich the web 25. At this time, holes are formed in the web 25 corresponding to the bolt holes 19 of the clamping members 3. The fixing members 1, 1a are fixed to the structure 21 by clamping the web 25 between the pair of clamping members 3 and using bolts 27 and nuts 29 inserted into the bolt holes 19 (see FIG. 1).

[0038] As described above, the gusset plate 7 is joined to the fixed member 1. A reinforcing member (not shown) is joined to the gusset plate 7. That is, the reinforcing member is joined to the gusset plate 7 joined to at least one of the holding members 3.

[0039] Further, the deformation prevention member 5 is joined to the clamping member 3. That is, the deformation prevention member 5 is arranged so as to straddle between the flanges 23 near the fixed portion of the clamping member 3. At this time, the deformation prevention member 5 has a female thread portion 13 formed toward each flange 23, and the bolt 17 is screwed into each female thread portion 13. In this way, the deformation prevention member 5 is arranged so as to straddle between the opposing surfaces of the flanges 23, and the distance between the ends of the pair of bolts 17 is made approximately equal to the distance between the flanges 23, so that the deformation prevention member 5 can function as a tension rod between the opposing flanges 23. Therefore, it is possible to restrict the opposing flanges 23 from deforming so as to approach each other. It is not necessary for the bolt 17 and the flanges 23 to be in complete contact with each other.

[0040] Next, a method of fixing the reinforcing member to the structure 21 will be described. First, as shown in Fig. 4(a), the web 25 is sandwiched between the clamping members 3 of a pair of fixing members 1, 1a from both sides of the web 25, and fixed to the structure 21 with bolts 27. In this manner, the deformation prevention member 5 is disposed between the flanges 23 near the fixing portion of the clamping members 3. At this time, the bolts 17 of the deformation prevention member 5 are fastened to the female threaded portions 13, and the distance between the ends of the bolts 17 is made narrower than the distance between the flanges 23, which makes it easy to install the fixing members 1, 1a.

[0041] After the clamping member 3 is fixed to the web 25, the bolts 17 of the deformation prevention member 5 are extended in the direction of the opposing surfaces of the flanges 23 (i.e., the bolts 17 are loosened from the female thread portions 13) to bring the heads of the bolts 17 into contact with the flanges 23. FIG. 4(b) is a diagram showing the state in which the bolts 17 and the flanges 23 are in contact with each other. In this way, the distance between the ends of the pair of bolts 17 of the deformation prevention member 5 can be made substantially equal to the distance between the flanges 23.

[0042] Next, by tightening the nut 15 onto the female thread portion 13, as described above, it is possible to prevent the bolt 17 from loosening. Finally, by joining a reinforcing member (not shown) to the gusset plate 7 joined to the clamping member 3, a fixing structure for the reinforcing member can be obtained.

[0043] Both fixing members 1, 1a have deformation prevention members 5. Therefore, on both sides of web 25 of H-shaped structure 21, deformation prevention members 5 are disposed between the opposing surfaces of flanges 23. Therefore, on either side of structure 21, deformation prevention members 5 can restrict deformation of opposing flanges 23 so as to approach each other.

[0044] In the above example, the gusset plate 7 is fixed to only one of the fixing members 1, but the present invention is not limited to this. For example, as in the fixing structure 20a shown in Fig. 5, the fixing members 1 may be arranged on both sides of the web 25. That is, the gusset plates 7 may be arranged on both sides of the structure 21, and reinforcing members (not shown) may be joined to each of the gusset plates 7.

[0045] Moreover, the structure 21 does not necessarily have to be H-shaped. For example, it can be applied to a substantially U-shaped structure 21a, like the fixing structure 20b shown in Fig. 6. The structure 21a also has a structure in which a pair of flanges 23 are connected by a web 25.

[0046] In this case, the fixing member 1a is disposed on one side of the web 25 (between the flanges 23), and the clamping member 3a without the deformation prevention member 5 is disposed on the other side (the side where the flanges 23 are not formed). That is, the clamping member 3a is a member made up of a gusset plate 7, a clamping portion 9, and a rib portion 11b for preventing deformation. The gusset plate 7 may also be joined to the fixing member 1a.

[0047] As described above, according to this embodiment, by arranging the deformation prevention members so as to straddle the opposing flanges 23, the deformation prevention members 5 can function as tension rods between the flanges 23. This makes it possible to suppress deformation of the structure 21 such that the flanges 23 approach each other. Furthermore, for an H-shaped structure 21, by arranging the deformation prevention members 5 on both sides of the web 25, the flanges 23 will not approach each other on either side, making it possible to more reliably prevent deformation of the structure 21.

[0048] In addition, because the deformation prevention member 5 is composed of the bolt 17 and the female thread portion 13, the distance between the ends of the bolt 17 can be easily changed. Therefore, by tightening the bolt 17 when attaching the fixing member to the structure, interference between the bolt 17 and the flange 23 during attachment can be suppressed. Furthermore, by protruding the deformation prevention member 5 (bolt 17) from the opposing surface of the flange 23 after the fixing member is fixed to the structure, the bolt 17 can be reliably abutted against the flange 23. Therefore, the same deformation prevention member 5 can be applied even if the spacing between the flanges 23 is slightly different.

[0049] Second embodiment Next, a fixing portion structure according to a second embodiment will be described. Fig. 7(a) is a front view showing a fixing structure 20c using fixing members 1b and 1c according to the second embodiment, and Fig. 7(b) is a cross-sectional view taken along line DD in Fig. 7(a). In the following description, the same reference numerals as in Figs. 1 to 6 are used for configurations having the same functions as those in the first embodiment, and duplicated descriptions will be omitted.

[0050] As shown in FIG. 7(b), in the fixing structure 20c, a fixing member 1b is arranged on one side of the structure 21 (web 25), and a fixing member 1c is arranged on the other side of the structure 21 (web 25).

[0051] The fixing member 1b has a configuration similar to that of the fixing member 1, but the shape of the deformation prevention member 5 is different. In the fixing member 1 described above, a block-shaped member is placed on the outer surface of the rib portion 11, and an internal thread portion 13 is formed in the block-shaped member, but in the fixing member 1b, the internal thread portion 13 is formed directly in each rib portion 11. That is, the internal thread portion 13 is formed on each of both side surfaces of the rib portion 11. In this case, a part of the clamping member 3 and a part of the deformation prevention member 5 share a structure, and it may not always be possible to clearly distinguish between them, but even in this case, the clamping member 3 and the deformation prevention member 5 are considered to be configured as a single unit.

[0052] When the fixing member 1b is fixed to the structure 21, the female threaded portions 13 arranged on both side surfaces of the rib portion 11 face the flanges 23. As described above, the bolts 17 are screwed into the respective female threaded portions 13. That is, the bolts 17 can be abutted against the opposing surfaces of the flanges 23.

[0053] In order to efficiently transmit the axial force from the reinforcing member to the structure 21, it is desirable that the fixing position (bolt 27) of the clamping member 3 be close to the flanges 23. For this reason, the width of the clamping member 3 is set slightly smaller than the width between the flanges 23. On the other hand, as described above, in order to make it possible to change the distance between the bolts 17 by changing the amount of fastening of the bolts 17, it is desirable that there is a certain amount of space between the female thread portion 13 and the flanges 23. For this reason, the rib portion 11 at the site where the female thread portion 13 is formed is formed so as to have a narrower width.

[0054] The fixing member 1c has a configuration substantially similar to that of the fixing member 1b, but a rib portion is disposed instead of the gusset plate 7. In the illustrated example, the fixing structure 20c shows an example in which the gusset plate 7 (reinforcing member) is disposed only on one side of the structure, but similar to the fixing structure 20a (FIG. 5), the fixing members 1b may be disposed on both sides of the structure 21 (web 25), and the gusset plates 7 (reinforcing members) may be disposed on both sides of the structure 21.

[0055] According to the second embodiment, it is possible to obtain the same effects as those of the first embodiment. In addition, by forming the female thread portion 13 directly on the rib portion 11, it is possible to achieve a more compact and lightweight structure.

[0056] (Third embodiment) Next, a fixing portion structure according to a third embodiment will be described. Fig. 8(a) is a front view showing a fixing structure 20d using fixing members 1d and 1e according to the third embodiment, and Fig. 8(b) is a cross-sectional view taken along line EE in Fig. 8(a).

[0057] As shown in FIG. 8(b), in the fixing structure 20d, a fixing member 1d is arranged on one side of the structure 21 (web 25), and a fixing member 1e is arranged on the other side of the structure 21 (web 25).

[0058] The fixing member 1d has a configuration substantially similar to that of the fixing member 1, but differs in the shape of the deformation prevention member 5. In the fixing member 1 described above, a block-shaped member is disposed on the outer surface of the rib portion 11, and female thread portions 13 are formed on both sides of the block-shaped member, but in the fixing member 1d, block-shaped members are disposed individually on both sides in the width direction of the rib portion 11, and female thread portions 13 are formed so as to penetrate the members.

[0059] For this reason, in the fixing member 1, the bolts 17 are screwed into the female threaded portion 13 from the outside in the width direction, but in the fixing member 1d, the bolts 17 can be screwed from the center side in the width direction toward the outside. That is, in the fixing member 1, when the bolts 17 are tightened into the female threaded portion 13, the widthwise spacing between the bolts 17 can be narrowed, but in the fixing member 1d, when the bolts 17 are tightened into the female threaded portion 13, the widthwise spacing between the bolts 17 can be widened.

[0060] When the fixing member 1d is fixed to the structure 21, the bolts 17 protrude toward both sides of the rib portion 11, and the tips of the bolts 17 (the side opposite to the heads) face the flanges 23. By tightening the bolts 17 into the female threaded portions 13, the bolts 17 can be brought into contact with the opposing surfaces of the flanges 23.

[0061] The fixing member 1e has a configuration substantially similar to that of the fixing member 1d, but a rib portion is disposed instead of the gusset plate 7. In the illustrated example, the fixing structure 20d shows an example in which the gusset plate 7 (reinforcing member) is disposed only on one side of the structure, but similar to the fixing structure 20a (FIG. 5), the fixing members 1d may be disposed on both sides of the structure 21 (web 25), and the gusset plates 7 (reinforcing members) may be disposed on both sides of the structure 21.

[0062] According to the third embodiment, it is possible to obtain the same effects as those of the first embodiment. Furthermore, in the fixing member 1, since the bolt 17 is loosened to bring the bolt 17 into contact with the flange 23, if the bolt 17 is not sufficiently long, the bolt 17 may fall out of the female thread portion 13. However, since the bolt 17 is tightened to bring the bolt 17 into contact with the flange 23, the bolt 17 will not fall out, and it is not necessary to form the female thread portion 13 deeply.

[0063] (Fourth embodiment) Next, a fixing portion structure according to a fourth embodiment will be described. Fig. 9(a) is a front view showing a fixing structure 20e using fixing members 1f and 1g according to the fourth embodiment, and Fig. 9(b) is a cross-sectional view taken along line FF in Fig. 9(a).

[0064] As shown in FIG. 9(b), in the fixing structure 20e, a fixing member 1f is arranged on one side of the structure 21 (web 25), and a fixing member 1g is arranged on the other side of the structure 21 (web 25).

[0065] The fixing member 1f has a configuration substantially similar to that of the fixing member 1, but the shape of the deformation prevention member is different. In each of the above-described embodiments, a deformation prevention member 5 having a female thread portion 13 and a bolt 17 is used, but in this embodiment, a plate-shaped deformation prevention member 5a is used. The deformation prevention member 5a is plate-shaped and has a notch formed in a part of it. Note that the notch may be replaced by an oval.

[0066] The cutout portions are provided at positions corresponding to the bolt holes 19 (see FIG. 1) of the clamping member 3. When fixing members 1f, 1g (clamping member 3) to the web 25, the deformation prevention member 5a is fixed to the clamping member 3 by the bolt 27 and the nut 29. That is, the deformation prevention member 5a is sandwiched and fixed between the clamping portion 9 and the bolt 27 or the nut 29.

[0067] The deformation prevention members 5a each protrude in the width direction of the clamping member 3 (clamping portion 9), and their tips abut against the flanges 23. Therefore, the deformation prevention members 5a can suppress deformation of the flanges 23 so as to bring them closer to each other.

[0068] 10, when fixing the fixing members 1f, 1g to the structure 21, the deformation prevention member 5a is not fixed to the clamping member 3, so that the fixing members 1f, 1g can be arranged on the structure 21 in a state where it is moved toward the center in the width direction of the clamping member 3. Thereafter, when fixing the fixing members 1f, 1g to the structure 21, the deformation prevention member 5a is caused to protrude in the direction of each opposing surface of the flange 23 and brought into contact with the flange, and in this state, the bolt 27 is tightened, thereby allowing the fixing of the fixing members 1f, 1g to the structure 21 and the fixing of the deformation prevention member 5a to the clamping member 3 to be performed simultaneously.

[0069] The fixing member 1g has a configuration substantially similar to that of the fixing member 1f, but a rib portion is disposed instead of the gusset plate 7. In the illustrated example, the fixing structure 20e shows an example in which the gusset plate 7 (reinforcing member) is disposed only on one side of the structure, but similar to the fixing structure 20a (FIG. 5), the fixing members 1f may be disposed on both sides of the structure 21 (web 25) and the gusset plates 7 (reinforcing members) may be disposed on both sides of the structure 21.

[0070] According to the fourth embodiment, it is possible to obtain the same effect as in the first embodiment. In this way, the deformation prevention member is not limited to being composed of the bolt 17 and the female thread portion 13, and the form is not particularly limited as long as it is disposed between the opposing flanges 23 and can suppress deformation so that the flanges 23 approach each other.

[0071] Although the embodiment of the present invention has been described above with reference to the attached drawings, the technical scope of the present invention is not limited to the above-described embodiment. It is clear that a person skilled in the art can think of various modifications or alterations within the scope of the technical ideas described in the claims, and it is understood that these also naturally belong to the technical scope of the present invention.

[0072] For example, the clamping member 3 in each of the fixing members described above has the rib portion 11 formed at each end in the height direction of the clamping portion 9, but this is not limited thereto. For example, a fixing member 1h having the rib portion 11 formed at approximately the center in the height direction of the clamping portion 9 may be used, as in the fixing structure 20f shown in FIG. 11(a). In this case, the deformation prevention member 5 is disposed at the portion where the rib portion 11 is disposed. In this manner, the deformation prevention member 5 may be one or more on one side of the web 25. Moreover, the deformation prevention member 5 may be disposed at any portion as long as it is in the vicinity of the portion where the clamping member 3 is fixed.

[0073] In addition, in each of the fixing members described above, the clamping member 3 and the deformation prevention member are integrally configured, but this is not limited thereto. For example, the clamping member 3 and the deformation prevention member 5 may be arranged separately, as in the fixing structure 20g shown in FIG. 11(b). Even in this case, a pair of deformation prevention members 5 may be arranged in the vicinity of the portion where the clamping member 3 is fixed so as to sandwich the clamping member 3 in the height direction, or only one of the deformation prevention members 5 may be arranged. Note that the vicinity of the portion where the clamping member is fixed is desirably, for example, a position closer than the height pitch of the bolts 27 from the bolt 27 on the side closer to the deformation prevention member in the height direction of the clamping member. [Explanation of symbols]

[0074] 1, 1a, 1b, 1c, 1d, 1e, 1f, 1g, 1h....Fixed members 3, 3a……Holding member 5, 5a……Deformation prevention member 7……… Gusset plate 9……Pinching part 11, 11a, 11b...Rib section 13... Female thread 15...Nut 17………Bolt 19....Bolt hole 20, 20a, 20b, 20c, 20d, 20e, 20f, 20g……Fixed structure 21, 21a……Structure 23...Flange 25. Web 27………Bolts 29………Nut 100……Fixed structure 101, 103...Fixing members 105……… Gusset plate 107a, 107b... Reinforcing members 109………Rib 111……Structure 113...Flange 115………Web 117………Bolts

Claims

1. A structure for fixing a reinforcing member to a structure having a pair of flanges connected by a web, A pair of clamping members that are fixed to sandwich the web; a deformation prevention member disposed between the flanges in the vicinity of a fixed portion of the clamping member; a reinforcing member joined to a gusset plate joined to at least one of the clamping members; Equipped with The deformation prevention member is A female thread portion formed toward each of the flanges; a bolt that screws into each of the female threaded portions, The clamping member and the deformation prevention member are integrally formed, a width of the clamping member is smaller than a width between the flanges, and a distance between the ends of the pair of bolts is approximately equal to the width between the flanges, A structure for fixing a reinforcing member to a structure, characterized in that the deformation prevention member is arranged to span between the opposing surfaces of the flanges, thereby preventing the opposing flanges from deforming toward each other.

2. A fixing structure for a reinforcing member to a structure as described in claim 1, characterized in that the deformation prevention member is positioned at a position away from the web clamped by the pair of clamping members.

3. A structure for fixing a reinforcing member to a structure described in claim 1 or claim 2, characterized in that the clamping member makes face contact with approximately the center portion between the flanges of the web.

4. The structure is H-shaped; 4. The structure for fixing a reinforcing member to a structure according to claim 1, wherein the deformation prevention members are disposed on both sides of the web.

5. A fixing member for fixing a reinforcing member to a structure having a pair of flanges connected by a web, A clamping member capable of clamping and fixing the web; a deformation prevention member joined to the clamping member and disposed between the flanges; Equipped with A gusset plate to which a reinforcing member is connected is joined to the clamping member, The deformation prevention members are arranged in a direction substantially perpendicular to a fixing direction of the clamping members and facing in opposite directions to each other, The deformation prevention member is A female thread portion formed toward each of the flanges; a bolt that screws into each of the female threaded portions, The clamping member and the deformation prevention member are integrally formed, A fixing member, characterized in that the width of the clamping member is smaller than the width between the flanges, and the distance between the ends of a pair of the bolts is approximately equal to the width between the flanges.

6. A method for fixing a reinforcing member to a structure having a pair of flanges connected by a web, comprising the steps of: a step of fixing a pair of clamping members so as to sandwich the web, and disposing a deformation prevention member adjacent to a fixed portion of the clamping members so as to span between the flanges; a step of joining a reinforcing member to a gusset plate joined to at least one of the clamping members; Equipped with The deformation prevention member is A female thread portion formed toward each of the flanges; a bolt that screws into each of the female threaded portions, The clamping member and the deformation prevention member are integrally formed, a width of the clamping member is smaller than a width between the flanges, and a distance between the ends of the pair of bolts is approximately equal to the width between the flanges, A method for fixing a reinforcing member to a structure, characterized in that the deformation prevention member is positioned between the opposing surfaces of the flanges, thereby preventing the opposing flanges from deforming toward each other.

7. A method for fixing a reinforcing member to a structure as described in claim 6, characterized in that after the clamping member is fixed to the web, the deformation prevention member is caused to protrude toward the opposing surfaces of each of the flanges and abut against the flanges.

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