JP2018197430A - Reinforcing structure for beam - Google Patents

Abstract

To provide a reinforcing structure for a beam which can be easily and safely performed at a site.SOLUTION: A first reinforcing member 5 has a hollow box shape which opens outward in the width direction of a beam 4, and an upper wall part 12 is an inclined surface which inclines downward toward the inside in the width direction of the beam 4, and a rear wall part 11 which is opposite to the opening is an inclined surface which inclines outward in the width direction of the beam 4 toward the lower side. A second reinforcing member 6 has the same shape as that of the first reinforcing member 5. Both the reinforcing members 5, 6 are vertically reversed and connected by connecting means 7, and in an upper wall portion 12 of the first reinforcing member 5, an outer end portion of the beam 4 in the width direction is brought into contact with a flange 2 of the upper side; an upper end of the rear wall part 11 of the first reinforcing member 5 is in contact with a web 3; in a lower wall part 27 of the second reinforcing member 6, an outer end part of the beam 4 in the width direction is brought into contact with a flange 2 on the lower side; a lower end of a rear wall 30 of the second reinforcement 6 is brought into contact with the web 3 and is held between flanges 2, 2 with a through hole 10 of the web 3 sandwiched therebetween.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a beam reinforcing structure having a pair of flanges and a web connecting the pair of flanges to each other, and made of H-shaped steel or the like in which through holes are formed in the web.

  Conventionally, when a through hole for equipment piping is formed in a web of steel beam such as H-shaped steel, a plate is fixed to the web with bolts or welding around the through hole, or a cylinder is formed so as to correspond to the through hole. Steel beams are reinforced by welding steel pipes to the web. For example, an opening stiffening structure for a steel beam as disclosed in Patent Document 1 below has been proposed. In this stiffening structure, a stiffening member is attached to a predetermined section sandwiching an opening formed in the steel beam, and the stiffening member is fixed to the web by bolts or welding.

JP-A-5-331964

  However, in the invention described in Patent Document 1, when the stiffening member is fixed to the steel beam with a bolt, it takes time to attach the stiffening member to the steel beam in the field. Further, when the stiffening member is fixed to the steel beam by welding, there is a problem of fire and a problem that the construction at the site becomes complicated when the interior of the building or the equipment piping is finished.

  The present invention has been made in view of such problems, and a main object thereof is to provide a beam reinforcing structure that can be easily and safely constructed on site.

  In order to achieve the above object, a reinforcing structure for a beam according to the present invention is a reinforcing structure for a beam in which a pair of flanges arranged vertically apart is connected by a web, and is provided between the pair of flanges. A hollow box-shaped first reinforcing member having a first opening that opens outward in the width direction of the beam, and the pair of flanges across a through-hole formed through the web in the width direction A hollow box-shaped second reinforcing member provided in between and having a second opening that opens outward in the width direction of the beam; and a connecting means for connecting the first reinforcing member and the second reinforcing member. The first reinforcing member and the second reinforcing member are connected in a state where they are slid in the opposite directions while being in contact with each other by the connecting means, and in this connected state, the first reinforcing member and the second reinforcing member One of the two reinforcing members is the upper frame. With contacting the di-and the other in contact with the flange of the lower, characterized in that it is disposed between the pair of flanges.

  In the reinforcing structure for a beam according to the present invention, the first reinforcing member has an inclined surface whose upper surface is inclined downward as it goes inward in the width direction of the beam, and is opposite to the first opening. The bottom surface on the side is an inclined surface that is inclined outward in the width direction of the beam, and the second reinforcing member is an inclined surface that is inclined upward as the lower surface is inward in the width direction of the beam. In addition, the first reinforcing member and the second reinforcing member are inclined surfaces that incline outward in the width direction of the beam as the bottom surface opposite to the second opening portion goes upward. While connected by the connecting means, the outer end in the width direction of the beam is in contact with the upper flange on the upper surface of the first reinforcing member, and the upper end of the bottom surface of the first reinforcing member is In contact with the web, outside the width direction of the beam on the lower surface of the second reinforcing member With the end portion is in contact with the flange of the lower, the lower end portion of the bottom surface of the second reinforcing member is in contact with the web, characterized in that it is disposed between the pair of flanges.

  Further, in the beam reinforcing structure according to the present invention, the first reinforcing member and the second reinforcing member are each formed with a concave portion recessed inwardly in a corresponding wall portion at the time of connection. The one reinforcing member and the second reinforcing member have an insertion hole formed by the concave portion formed in the first reinforcing member and the concave portion formed in the second reinforcing member in the connected state. It is arranged between the pair of flanges so as to correspond to the through holes.

  Further, in the beam reinforcing structure according to the present invention, the first reinforcing member and the second reinforcing member have the same outer shape, and are disposed between the pair of flanges so as to face each other upside down. It is characterized by being.

  According to the reinforcing structure of a beam according to the present invention, the first reinforcing member and the second reinforcing member are connected in a state where they are slid in the opposite directions while being in contact with each other by the connecting means. In this connected state, one of the reinforcing members is in contact with the upper flange and the other is in contact with the lower flange, and is disposed between the pair of flanges. In this way, both reinforcing members are brought into contact with the upper and lower flanges so that they are pressed against each other and are provided to the beam by metal touch. Therefore, according to the beam reinforcing structure according to the present invention, the construction can be easily performed on site. It can be done safely at the site where it is necessary to pay attention to fire. In addition to this, the present invention has a configuration in which the first reinforcing member and the second reinforcing member arranged with the through hole interposed therebetween are connected by the connecting means. Therefore, according to the beam reinforcing structure according to the present invention, when the reinforcement is required due to the change in the shearing force of the beam at the time of reform, the reinforcement can be easily performed without removing the equipment piping.

  Further, according to the beam reinforcing structure of the present invention, the first reinforcing member is connected to the second reinforcing member, and the outer end in the width direction of the beam is on the upper surface formed on the inclined surface. While contacting with a flange, the upper end part of the bottom face formed in the inclined surface is contacted with a web. In addition, the second reinforcing member is formed on the inclined surface while being connected to the first reinforcing member, the outer end of the beam in the width direction is in contact with the lower flange on the lower surface formed on the inclined surface. The bottom end of the bottom surface is brought into contact with the web. That is, the first reinforcing member is pressed against the web so as to rotate around the contact portion with the flange by pressing against the upper flange. On the other hand, the second reinforcing member is pressed against the web so as to rotate about the contact portion with the flange by pressing against the lower flange. In this way, since both the reinforcing members are provided on the beam by a stronger metal touch, the construction can be easily and reliably performed on site.

  Moreover, according to the reinforcing structure of the beam according to the present invention, the two reinforcing members are formed between the pair of flanges by associating the insertion hole formed by the recess formed in each with the through hole formed in the web. Is positioned.

  Furthermore, according to the reinforcing structure of a beam according to the present invention, both reinforcing members have the same outer shape, so that the manufacturing cost of both reinforcing members can be reduced.

It is a front view which shows one Example of the reinforcement structure of the beam of this invention. FIG. 2 is a left side view of the beam reinforcing structure in FIG. 1, showing a part in cross-section and omitting a part. It is a right view of the reinforcement structure of the beam of FIG. 1, and while showing a part in a cross section and omitting a part, it shows. It is a perspective view of the 1st reinforcement material used for the reinforcement structure of the beam of FIG.

  Hereinafter, specific examples of the reinforcing structure of a beam according to the present invention will be described in detail with reference to the drawings.

  1 to 3 are views showing an embodiment of a beam reinforcing structure according to the present invention. FIG. 1 is a front view, FIG. 2 is a left side view, and FIG. 3 is a right side view. In FIGS. 2 and 3, a part is shown in cross section and a part is omitted. The beam reinforcing structure 1 of the present embodiment is applied to the beam 4 in which a pair of flanges 2 and 2 arranged apart from each other in the vertical direction are connected by a web 3, and between the pair of flanges 2 and 2. A first reinforcing member 5 provided on the first reinforcing member 5, a second reinforcing member 6 provided between the pair of flanges 2 and 2 adjacent to the first reinforcing member 5, and the first reinforcing member 5 and the second reinforcing member 6. Connecting means 7 for connection.

  The beam 4 of this embodiment is made of an H-shaped steel having the pair of flanges 2 and 2 and the web 3 described above, and extends in the left-right direction. An upper web fillet 8 is formed on the front side and the rear side of the web 3 at the connection point between the upper flange 2 and the upper end of the web 3. Further, a lower web fillet 9 is formed on the front side and the rear side of the web 3 at the connection point between the lower flange 2 and the lower end of the web 3. A through hole 10 having a circular shape in front view is formed in the web 3 of the beam 4 so as to penetrate in the front-rear direction which is the width direction.

  FIG. 4 is a perspective view of the first reinforcing member 5 used in the beam reinforcing structure 1 of this embodiment. As shown in this figure, the first reinforcing member 5 is a reinforcing member formed in a hollow box shape having a substantially L shape in front view and having a first opening 19 opening forward. Specifically, the first reinforcing member 5 includes a plate-like rear wall portion 11 having a substantially L shape in front view, a plate-like upper wall portion 12, a plate-like lower wall portion 13, and a plate-like left wall portion 14. The plate-like right wall 15 and the left wall 14 are provided with a curved plate-like connecting wall 16 that connects the lower ends of the left wall 14 and the left end of the lower wall 13. Here, in the wall portion of the first reinforcing member 5, the connection wall portion 16 is formed in a curved plate shape, so that a recess 48 is formed inwardly recessed. Inside the first reinforcing member 5, plate-like ribs 17 are formed so as to be inclined so as to connect the corners of the upper wall portion 12 and the right wall portion 15 and the connection wall portion 16. Yes.

  The upper wall portion 12 of the first reinforcing member 5 is formed so as to be inclined downward as it goes rearward from the front end portion. The rear wall portion 11 of the first reinforcing member 5 is formed to be inclined forward as it goes downward from the upper end portion. In this way, the first reinforcing member 5 has a rear surface, which is the bottom surface 20 on the opposite side of the upper surface 18 and the first opening 19, formed on an inclined surface. Further, the left wall portion 14 of the first reinforcing member 5 is formed to be inclined to the right as the lower end portion goes downward, and a through hole 22 is formed in the inclined portion 21. The lower wall portion 13 of the first reinforcing member 5 is inclined upward as the left end portion goes to the left, and a through hole 24 is formed in the inclined portion 23. The plate-like portion 25 excluding the inclined portion 23 of the lower wall portion 13 of the first reinforcing member 5 is formed to be inclined downward as it goes backward from the front end portion. The through holes 22 and 24 respectively formed in the left wall portion 14 and the lower wall portion 13 are formed in a water droplet shape that swells obliquely downward.

  In the present embodiment, the first reinforcing member 5 is formed such that the length of the longest vertical length is shorter than the vertical length between the flanges 2 and 2 of the beam 4. The second reinforcing member 6 is a reinforcing member formed in a hollow box shape having a substantially L shape in front view and having a second opening 47 opening forward, and a concave portion 49 is formed in the wall portion so as to be recessed inward. Has been. In the present embodiment, the second reinforcing member 6 is formed in the same shape as the first reinforcing member 5 and the description thereof will be omitted. The connection means 7 is not particularly limited in its configuration, but in the present embodiment, it is a rod-shaped member having a circular cross section and is tapered.

  The first reinforcing member 5 and the second reinforcing member 6 are arranged between a pair of upper and lower flanges 2 and 2 on one surface side of the web 3 in a state where the first reinforcing member 5 and the second reinforcing member 6 are connected to each other by the connecting means 7 upside down. Is done. Here, since the second reinforcing member 6 is turned upside down with respect to the first reinforcing member 5, its upper wall part 26, lower wall part 27, left wall part 28, right wall part 29 and rear wall part. 30 corresponds to the lower wall portion 13, the upper wall portion 12, the right wall portion 15, the left wall portion 14, and the rear wall portion 11, respectively.

  As shown in FIG. 1, the reinforcing members 5 and 6 are respectively formed with recesses 48 and 49 that are recessed inwardly in the corresponding walls when connected. In the connected state, the first reinforcing member 5 and the second reinforcing member 6 are connected to each other by a concave portion 48 formed in the first reinforcing member 5 and a concave portion 49 formed in the second reinforcing member 6. It is made by the connecting means 7 made of a rod-shaped member so that an elliptical insertion hole 34 is formed. In the present embodiment, the left wall portion of the first reinforcing member 5 is in a state where the inclined portion 21 of the left wall portion 14 of the first reinforcing member 5 is in contact with the inclined portion 31 of the upper wall portion 26 of the second reinforcing member 6. The connecting means 7 is fitted in the order of the through hole 22 formed in the 14 inclined portions 21 and the through hole formed in the inclined portion 31 of the upper wall portion 26 of the second reinforcing member 6. In addition, the slope of the lower wall portion 13 of the first reinforcement member 5 is in contact with the slope portion 23 of the lower wall portion 13 of the first reinforcement member 5 and the slope portion 32 of the right wall portion 29 of the second reinforcement member 6. The connecting means 7 is fitted in the order of the through hole 24 formed in the portion 23 and the through hole formed in the inclined portion 32 of the right wall portion 29 of the second reinforcing member 6.

  Here, the through hole formed in the inclined portion 31 of the upper wall portion 26 of the second reinforcing member 6 is formed smaller than the through hole 22 formed in the inclined portion 21 of the left wall portion 14 of the first reinforcing member 5. Has been. Further, the through hole formed in the inclined portion 32 of the right wall portion 29 of the second reinforcing member 6 is formed smaller than the through hole 24 formed in the inclined portion 23 of the lower wall portion 13 of the first reinforcing member 5. ing. As described above, the first connecting member 5 and the second reinforcing member 6 slide in the opposite directions up and down while being in contact with each other by the connecting means by passing the tapered connecting means 7 through the reinforcing members 5 and 6. And then connected in the shifted state. Thus, the 1st reinforcement material 5 and the 2nd reinforcement material 6 are connected by the connection means 7 which consists of a rod-shaped member.

  In this connected state, the reinforcing members 5 and 6 are disposed between the front flanges 2 and 2 so that the elliptical insertion holes 34 correspond to the through holes 10 formed in the web 3. That is, the first reinforcing member 5 and the second reinforcing member 6 sandwich one of the through holes 10 formed in the web 3, and one of them contacts the upper flange 2 and the other contacts the lower flange 2. And between the pair of flanges 2 and 2.

  Specifically, the first reinforcing member 5 is disposed so as to open outward in the width direction of the beam 4, and the outer end in the width direction of the beam 4 which is the front end portion on the upper surface 18 contacts the upper flange 2. In addition, the upper end portion of the bottom surface (rear surface) 20 is brought into contact with the web 3 and is disposed between the flanges 2 and 2. At this time, the upper surface 18 of the first reinforcing member 5 is an inclined surface inclined downward as it goes inward in the width direction of the beam 4, and between the upper surface 18 of the first reinforcing member 5 and the inner surface of the upper flange 2. A substantially triangular gap 35 is formed in a side view. Further, the bottom surface 20 of the first reinforcing member 5 is inclined so as to incline outward in the width direction of the beam 4, and the side view is omitted between the bottom surface 20 of the first reinforcing member 5 and the front surface of the web 3. A triangular gap 36 is formed. That is, the first reinforcing member 5 is inclined with respect to the upper flange 2 in which the upper surface 18 is arranged along the horizontal direction, and the bottom surface 20 is inclined with respect to the web 3 arranged in the vertical direction. The

  On the other hand, the second reinforcing member 6 is arranged so as to open outward in the width direction of the beam 4, and the width direction outer end portion of the beam 4, which is the front end portion, is in contact with the lower flange 2 on the lower surface 37. In addition, the lower end of the bottom surface (rear surface) 38 is brought into contact with the web 3 and is disposed between the flanges 2 and 2. At this time, the lower surface 37 of the second reinforcing member 6 is inclined so as to incline upward as it goes inward in the width direction of the beam 4, and between the lower surface 37 of the second reinforcing member 6 and the inner surface of the lower flange 2. A gap 39 having a substantially triangular shape in side view is formed in the side. Further, the bottom surface 38 of the second reinforcing member 6 is inclined so as to incline outward in the width direction of the beam 4, and the side view is omitted between the bottom surface 38 of the second reinforcing member 6 and the front surface of the web 3. A triangular gap 40 is formed. That is, the second reinforcing member 6 is inclined with respect to the lower flange 2 where the lower surface 37 is disposed along the horizontal direction, and is inclined with respect to the web 3 where the bottom surface 38 is disposed along the vertical direction. Is done.

  In this way, the first reinforcing member 5 and the second reinforcing member 6 are held between the pair of flanges 2 and 2 by metal touch while being connected to each other by the connecting means 7. At this time, as described above, since the vertical lengths of both the reinforcing members 5 and 6 are shorter than the vertical length between the flanges 2 and 2, the gap between the lower surface 41 of the first reinforcing member 5 and the inner surface of the lower flange 2 is obtained. And gaps 43 and 44 are formed between the upper surface 42 of the second reinforcing member 6 and the inner surface of the upper flange 2, respectively.

  The beam reinforcing structure 1 of the present embodiment further includes a filler plate 45 inserted into each of the gaps 43 and 44 described above. Here, the filler plate 45 inserted into the gap 43 between the first reinforcing member 5 and the lower flange 2 will be described. The filler plate 45 is formed in a plate shape, and is formed on an inclined surface that is inclined downward as the upper surface goes rearward. The inclination of the inclined surface corresponds to the inclination of the plate-like portion 25 of the lower wall portion 13 of the first reinforcing member 5. Therefore, the filler plate 45 can be inserted into the gap 43 between the plate-like portion 25 of the lower wall portion 13 of the first reinforcing member 5 and the lower flange 2.

  In the present embodiment, since the first reinforcing member 5 and the second reinforcing member 6 have the same outer shape, the plate-like portion 25 of the lower wall portion 13 of the first reinforcing member 5 and the lower flange 2 And the gap 44 between the plate-like portion 46 of the upper wall portion 26 of the second reinforcing member 6 and the upper flange 2 have the same shape, and the gaps 43 and 44 are opposite to each other. Has been placed. Accordingly, in the gap 44 between the plate-like portion 46 of the upper wall portion 26 of the second reinforcing member 6 and the upper flange 2, the plate-like portion 25 of the lower wall portion 13 of the first reinforcing member 5 and the lower side of the lower reinforcing member 6 are provided. The filler plate 45 inserted into the gap 43 between the flange 2 can be inserted upside down.

  In the case of the beam reinforcing structure 1 of the present embodiment, the first reinforcing member 5 is connected to the second reinforcing member 6 between the upper surface 18 and the upper flange 2, and between the bottom surface 20 and the web 3. Between the flanges 2 and 2 in contact with the beam 4 so as to form gaps 35 and 36 respectively. On the other hand, the second reinforcing member 6 is connected to the first reinforcing member 5 between the lower surface 37 and the lower flange 2, and between the bottom surface 38 and the web 3. Is placed between the flanges 2 and 2 in contact with the beam 4 to form In this way, both the reinforcing members 5 and 6 can be held between the flanges 2 and 2 by metal touch.

  Therefore, according to the beam reinforcing structure 1 of the present embodiment, the first reinforcing member 5 is pressed against the upper flange 2 by sliding upward, and the second reinforcing member 6 is pressed to the lower flange by sliding downward. 2 is pressed. Thereby, compared with the case of the construction by the bolt of a reinforcing material, construction of both the reinforcing materials 5 and 6 can be easily performed on the spot. Moreover, compared with the case of construction by welding of a reinforcing material, anyone can easily perform construction on site without requiring skill. For example, when reinforcement of the vicinity of the through hole 10 of the beam 4 is necessary due to the addition of a support column or a change in load at the time of reform, it can be easily reinforced on site. Further, since both the reinforcing members 5 and 6 are held between the flanges 2 and 2 by the metal touch, according to the beam reinforcing structure 1 of the present embodiment, it is reinforced by welding in a site where it is necessary to pay attention to fire. Compared with the case where a material is constructed, both the reinforcing materials 5 and 6 can be constructed safely.

  Further, in the case of the beam reinforcing structure 1 of the present embodiment, the first reinforcing member 5 is pressed against the upper flange 2 by the connecting means 7, so that the contact portion between the upper surface 18 and the upper flange 2 is used as a fulcrum. It will be pressed against the web 3 to rotate counterclockwise in FIG. On the other hand, since the second reinforcing member 6 is pressed against the lower flange 2 by the connecting means 7, the second reinforcing member 6 rotates counterclockwise in FIG. 2 with the contact portion between the lower surface 37 and the lower flange 2 as a fulcrum. It will be pressed against the web 3. Therefore, according to the beam reinforcing structure 1 of this embodiment, the contact between the reinforcing members 5 and 6 and the beam 4 can be strengthened.

  Further, in the case of the beam reinforcing structure 1 of the present embodiment, the first reinforcing member 5 and the second reinforcing member 6 are connected by the rod-like connecting means 7, so that the two reinforcing members 5 and 6 can be easily connected to each other. Thus, it is possible to more easily install the reinforcing members 5 and 6 on the beam 4. In the case of the beam reinforcing structure 1 of the present embodiment, the gap 43 between the plate-like portion 25 of the lower wall portion 13 of the first reinforcing member 5 and the lower flange 2 and the upper portion of the second reinforcing member 6 are also provided. Since the filler plates 45 are respectively inserted into the gaps 44 between the plate-like portion 46 of the wall portion 26 and the upper flange 2, the contact of the reinforcing members 5 and 6 with the beam 4 can be further strengthened. Further, in the case of the beam reinforcing structure 1 of the present embodiment, since both the filler plates 45 and 45 have the same shape, the manufacturing cost of the filler plate 45 can be reduced.

  Further, in the case of the beam reinforcing structure 1 of this embodiment, both the reinforcing members 5 and 6 are installed so that the insertion hole 34 corresponds to the through hole 10, and the pair of flanges 2 and 2 of both the reinforcing members 5 and 6. Positioning is performed between them. Further, in the case of the beam reinforcing structure 1 of the present embodiment, the first reinforcing member 5 and the second reinforcing member 6 are formed in the same outer shape, so that the manufacturing cost of both the reinforcing members 5 and 6 can be reduced. Can do. Further, in the case of the beam reinforcing structure 1 of the present embodiment, since the first reinforcing member 5 and the second reinforcing member 6 are provided, in a state where the facility pipe is installed in the through hole 10 of the beam 4, Both the reinforcing members 5 and 6 can be easily installed without removing the equipment piping. Furthermore, in the case of the beam reinforcing structure 1 of the present embodiment, the upper surface 18 of the first reinforcing member 5 and the lower surface 37 of the second reinforcing member 6 are formed on the inclined surface. 5 can be prevented from contacting, and the second reinforcing material 6 can be prevented from contacting the lower web fillet 9.

  The beam reinforcing structure of the present invention is not limited to the configuration of the above embodiment, and can be changed as appropriate. For example, in the above embodiment, the reinforcing members 5 and 6 are provided only between the front flanges 2 and 2, but the present invention is not limited to this. Alternatively, it may be provided between the front and rear flanges 2 and 2. Further, in the embodiment, the filler plate 45 is provided in the gap 43 between the first reinforcing member 5 and the lower flange 2 and the gap 44 between the second reinforcing member 6 and the upper flange 2. However, the gap 43 between the first reinforcing member 5 and the lower flange 2 or the gap 44 between the second reinforcing member 6 and the upper flange 2 may be provided.

  INDUSTRIAL APPLICABILITY The present invention is suitably used for a beam reinforcing structure made of H-shaped steel or the like in which a pair of upper and lower flanges are connected by a web.

DESCRIPTION OF SYMBOLS 1 Beam reinforcement structure 2 Flange 3 Web 4 Beam 5 1st reinforcement 6 Second reinforcement 7 Connection means 10 Through-hole 11 Rear wall part 12 Upper wall part 13 Lower wall part 14 Left wall part 18 Upper surface 20 Bottom surface 22 Through hole 24 Through hole 26 Upper wall portion 27 Lower wall portion 29 Right wall portion 30 Rear wall portion 37 Lower surface 38 Bottom surface 43 Gap 44 Gap 45 Filler plate

Claims (4)

A reinforcing structure of a beam connected by a web between a pair of flanges spaced apart in the vertical direction,
A hollow box-shaped first reinforcing member provided between the pair of flanges and having a first opening that opens outward in the width direction of the beam;
Hollow box-shaped second reinforcement provided between the pair of flanges with a through-hole formed through the web in the width direction and having a second opening that opens outward in the width direction of the beam. Material,
Connecting means for connecting the first reinforcing member and the second reinforcing member;
The first reinforcing member and the second reinforcing member are connected in a state where they slide in the opposite directions up and down while being in contact with each other by the connecting means, and in this connected state, the first reinforcing member and the second reinforcing member One of the materials is in contact with the upper flange and the other is in contact with the lower flange, and is arranged between the pair of flanges. The first reinforcing member is an inclined surface whose upper surface is inclined downward as it goes inward in the width direction of the beam, and the width of the beam as the bottom surface opposite to the first opening portion goes downward. It is an inclined surface that inclines outward in the direction,
The second reinforcing member has an inclined surface whose lower surface is inclined upward as it goes inward in the width direction of the beam, and the width of the beam as the bottom surface opposite to the second opening portion goes upward. It is an inclined surface that inclines outward in the direction,
The first reinforcing member and the second reinforcing member are connected by the connecting means, and an outer end in the width direction of the beam is brought into contact with the upper flange on the upper surface of the first reinforcing member. And an upper end portion of the bottom surface of the first reinforcing member is in contact with the web, and an outer end portion in the width direction of the beam is in contact with the lower flange on the lower surface of the second reinforcing member, and The beam reinforcing structure according to claim 1, wherein a lower end portion of a bottom surface of the second reinforcing member is in contact with the web and disposed between the pair of flanges. Each of the first reinforcing member and the second reinforcing member is formed with a recess recessed inwardly in the corresponding wall portion at the time of connection,
The first reinforcing member and the second reinforcing member include an insertion hole formed by the concave portion formed in the first reinforcing member and the concave portion formed in the second reinforcing member in a connected state. The beam reinforcing structure according to claim 1, wherein the beam reinforcing structure is disposed between the pair of flanges so as to correspond to the through hole. The first reinforcing member and the second reinforcing member have the same outer shape, and are disposed between the pair of flanges so as to face each other upside down. The beam reinforcing structure according to any one of the preceding claims.

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