JP4319107B2 - Beam reinforcement bracket and piping structure - Google Patents

Description

  The present invention relates to a beam reinforcing bracket.

H-shaped steel, L-shaped steel, and the like are widely used as beams for building structures, but in such beams, there are cases in which through holes for passing piping provided inside the building structure are formed.
At this time, in order to prevent a decrease in strength due to the formation of the through hole, a reinforcing metal fitting may be attached to the through hole.

FIG. 10 is a perspective view showing the beam 113 to which the beam reinforcing bracket 111 is attached, and FIG. 11 is a longitudinal sectional view of FIG.
A beam reinforcing bracket 111 is attached to the through hole 115 of the beam 113 by fastening means such as a bolt 117.
The beam reinforcing bracket 111 has a through hole 123, and a pipe 119 and the like can be passed through the through hole 123.
Further, as shown in FIG. 11, the beam reinforcing bracket 111 is provided with a tapered portion 121. This is so that the beam reinforcing bracket can be attached by welding, and at the time of welding, the welding member is welded in the gap between the tapered portion 121 and the through hole 115.
Examples of such beam reinforcing brackets include the following.
(Patent Document 1).

JP 2003-232077 A

  However, conventionally, since the beam reinforcing bracket 111 has the tapered portion 121, when the beam reinforcing bracket 111 is attached to the beam 113 by bolt joining, there is a gap between the through hole 115 of the beam 113 and the tapered portion 121. it can. For this reason, when a load is applied to the beam 113, the beam 113 is deformed before the beam reinforcing bracket 111, and the beam reinforcing bracket 111 cannot sufficiently reinforce the beam 113.

The present invention has been made in view of such problems, and an object of the present invention is to provide a beam reinforcing metal fitting that can sufficiently reinforce a beam even when bolted.

In order to achieve the above-mentioned object, the first invention is a beam reinforcing bracket fixed to a peripheral portion of a through hole formed in a beam by using a fastening means, the peripheral portion of the through hole and the beam reinforcing member. The beam reinforcing metal fitting is characterized in that the metal fitting outer peripheral portion has a close contact portion , and the entire inner peripheral portion of the beam reinforcing metal fitting has a curved surface in the axial cross-sectional direction .
The beam reinforcing bracket may have different inner and outer peripheral shapes.
Further, the beam reinforcing metal fitting may have fire resistance. Specifically, at least an inner peripheral portion is provided with a fireproof material, or the whole is formed of fireproof steel.
The beam reinforcing bracket may be provided with a positioning mark.
According to a second aspect of the present invention, there is provided a through hole provided in the beam, a beam reinforcing bracket provided in the through hole, and a hole having a curved surface in the axial cross-sectional direction on the entire inner peripheral portion, and the beam reinforcing bracket. A piping structure characterized by comprising a pipe that passes through the hole obliquely with respect to the axial direction.

  According to the present invention, since the peripheral portion of the through hole formed in the beam and the outer periphery of the beam reinforcing bracket are in close contact with each other, the beam and the beam reinforcing bracket are integrally loaded even when a load is applied to the beam. Because of this, the beam can be sufficiently reinforced.

Moreover, since it has a taper part or a curved surface in the axial cross section direction of the inner peripheral part of a beam reinforcement metal fitting, piping can be passed diagonally with respect to a beam, and the freedom degree of piping design increases. In addition, the shape of the inner and outer peripheries of the beam reinforcement brackets is different, and the gap between the inner perimeter and the pipe is small even through various shapes of pipes. And cost is improved.

In addition, since the beam reinforcing bracket is previously provided with fire resistance, a step of spraying a fire resistant material separately to at least the inner peripheral portion of the through hole of the beam reinforcing bracket is unnecessary, and workability and cost are improved.
Further, since the positioning marks are provided in advance on the beam reinforcing metal fittings, attachment becomes easy and workability is improved.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail based on the drawings. FIG. 1 shows a beam reinforcing bracket 1 according to the first embodiment. FIG. 1 (a) is a longitudinal sectional view of the beam reinforcing bracket 1, and FIG. 1 (b) is A in FIG. 1 (a). A direction view, FIG.1 (c) is a B direction arrow view of Fig.1 (a).

The main body 2 of the beam reinforcing bracket 1 has a ring shape, has a thin flange portion 5 on the outer peripheral portion, and a close contact portion 3 is provided between the flange portion 5 and the main body 2. In addition, a through hole 9 is provided at the center of the beam reinforcing bracket 1. Bolt insertion holes 12a, 12b, 12c, 12d are provided near the center of the flange portion 5, and projecting pieces 13a, 13b, 13c, 13d as positioning marks are provided near the outer periphery of the flange portion 5. ing.
The material of the beam reinforcing bracket 1 is, for example, rolled steel, cast steel, forged steel, or the like.

  Next, a method for attaching the beam reinforcing bracket 1 will be described with reference to FIGS. 2A and 2B are diagrams showing the attachment to the beam 15. FIG. 2A is a diagram showing the vicinity of the through hole 17 of the beam 15 before the beam reinforcement bracket 1 is attached, and FIG. 2B is the beam reinforcement bracket. It is a figure which shows the beam reinforcement metal fitting 1 and the beam 15 after attaching 1 to the beam 15. FIG. FIG. 3 is a cross-sectional view taken along the line CC of FIG.

  As shown in FIG. 2A, in the vicinity of the outer periphery of the through-hole 17 provided in the beam 15, marking lines 19a, 19b, 19c, 19d as positioning marks and bolt insertion holes 18a, 18b, 18c, 18d are provided. Is provided. At the time of attachment, as shown in FIG. 2 (b), the protruding pieces 13a, 13b, 13c, 13d of the beam reinforcing bracket 1 and the marking lines 19a, 19b, 19c, 19d of the through holes 17 are attached together. .

  As shown in FIGS. 2B and 3, after attaching the beam reinforcing bracket 1 to the beam 15, the bolts 21 a, 21 b, 21 c, and 21 d are inserted into the bolt insertion holes 12 a, 12 b, 12 c, 12 d and the beam reinforcing bracket 1. The beam reinforcing metal fitting 1 is fixed to the beam 15 using fastening means such as a nut 25 and a washer 23 through the bolt insertion holes 18a, 18b, 18c, and 18d of the beam 15. At this time, fixing is performed so that the contact portion 3 of the beam reinforcing bracket 1 and the planar end surface 20 of the beam 15 are in close contact. Thereafter, a fireproof material is sprayed on the beam reinforcing bracket 1 and the beam 15 as necessary, and piping or the like is installed in the through hole 9.

Thus, according to 1st Embodiment, the contact part 3 of the beam reinforcement metal fitting 1 and the end surface 20 of the beam 15 are closely_contact | adhered. Therefore, there is no gap between the beam reinforcing bracket 1 and the beam 15, and the beam and the beam reinforcing bracket are integrated to support the load even when a load is applied to the beam. Therefore, the beam can be sufficiently reinforced. it can.
Moreover, according to 1st Embodiment, the protrusion pieces 13a, 13b, 13c, and 13d as a positioning mark are provided in the beam reinforcement metal fitting 1 beforehand. Therefore, even when positioning is necessary when attaching the beam reinforcing bracket 1 to the beam 15 due to distortion of the shape of the through-hole 17 of the beam, the positioning can be easily performed and workability is improved. .

Next, a second embodiment will be described. 4A and 4B are views showing a beam reinforcing bracket 35 according to the second embodiment, in which FIG. 4A is a longitudinal sectional view of the beam reinforcing bracket 35, and FIG. 4B is a direction D in FIG. 4A. An arrow view and FIG.4 (c) are E direction arrow views of Fig.5 (a). The beam reinforcing bracket 35 according to the second embodiment is obtained by providing a refractory material 44 to the beam reinforcing bracket 1 according to the first embodiment.

A main body 37 of the beam reinforcing bracket 35 has a ring shape, has a thin flange portion 39 on the outer peripheral portion, and a close contact portion 41 is provided between the flange portion 39 and the main body 37. A through hole 43 is provided at the center of the beam reinforcing bracket 35, and a refractory material 44 is provided in the through hole 43. Bolt insertion holes 45a, 45b, 45c, 45d are provided near the center of the flange portion 39, and projecting pieces 47a, 47b, 47c, 47d as positioning marks are provided near the outer periphery of the flange portion 39. ing.
The material of the main body 37 of the beam reinforcing bracket 35 is, for example, rolled steel, cast steel, forged steel, or the like.
The material of the refractory material 44 is, for example, glass wool or refractory ceramics.

  The beam reinforcing bracket 35 is also attached to the beam 15 by fastening means such as bolts as in the first embodiment. Thereafter, a fireproof material is sprayed on the beam reinforcing bracket 35 and the beam 15 as necessary, and piping or the like is installed in the through hole 43.

As described above, according to the second embodiment, the close contact portion 41 of the beam reinforcing bracket 35 and the end surface 20 of the beam 15 are in close contact with each other, so that a gap between the beam reinforcing bracket 35 and the beam 15 cannot be formed. Even when a load is applied to the beam 15, the beam 15 and the beam reinforcing bracket 35 integrally support the load, so that the beam 15 can be sufficiently reinforced. In addition, a refractory material 44 is provided in advance in the through hole 43 of the beam reinforcing bracket 35. This eliminates the need for a separate step of spraying a refractory material on at least the inner periphery of the through-hole 43 during installation, improving workability and cost.
In the second embodiment, the refractory material 44 is provided around the through hole 43 of the beam reinforcing bracket 35. However, the entire beam reinforcing bracket 35 is formed of refractory steel without providing the refractory material 44, and the fire resistant material is provided. You may have sex.

Next, a third embodiment will be described. 5A and 5B are views showing a beam reinforcing bracket 51 according to the third embodiment, in which FIG. 5A is a longitudinal sectional view of the beam reinforcing bracket 51, and FIG. 5B is a direction F in FIG. 5A. An arrow view and FIG.5 (c) are G direction arrow view views of Fig.5 (a). In the beam reinforcing bracket 51 according to the third embodiment, the through hole 9 of the beam reinforcing bracket 1 according to the first embodiment is rectangular.

A main body 53 of the beam reinforcing bracket 51 has a ring shape, and has a thin-walled flange portion 55 on the outer peripheral portion, and a close contact portion 57 is provided between the flange portion 55 and the main body 53. A rectangular through hole 59 is provided in the center of the beam reinforcing bracket 51. Bolt insertion holes 60a, 60b, 60c, 60d are provided near the center of the flange portion 5, and projecting pieces 61a, 61b, 61c, 61d as positioning marks are provided near the outer periphery of the flange portion 55. It has been.

The beam reinforcing bracket 51 is also attached to the beam 15 by fastening means such as bolts as in the first embodiment. Thereafter, a fireproof material is sprayed on the beam reinforcing bracket 51 and the beam 15 as necessary, and piping or the like is installed in the through hole 59.

As described above, according to the third embodiment, the same effect as that of the first embodiment is obtained, and the through hole 59 of the beam reinforcing bracket 51 is rectangular. Therefore, since the gap between the through hole 59 and the pipe is small even when the rectangular pipe is passed through the through hole 59, the process of filling the gap is reduced, and workability and cost are improved.

Next, a fourth embodiment will be described. 6A and 6B are views showing a beam reinforcing bracket 65 according to the fourth embodiment, in which FIG. 6A is a longitudinal sectional view of the beam reinforcing bracket 65, and FIG. 6B is an H direction of FIG. 6A. An arrow view and FIG.6 (c) are I direction arrow view views of Fig.6 (a). In the beam reinforcing metal fitting 65 according to the fourth embodiment, the through hole 9 of the beam reinforcing metal fitting 1 according to the first embodiment is formed into an ellipse.

A main body 67 of the beam reinforcing bracket 65 has a ring shape, and has a thin-walled flange portion 69 on the outer peripheral portion, and a close contact portion 71 is provided between the flange portion 69 and the main body 67. An elliptical through hole 73 is provided at the center of the beam reinforcing metal fitting 65. Further, bolt insertion holes 76a, 76b, 76c, 76d are provided in the vicinity of the center of the flange portion 69, and projecting pieces 77a, 77b, 77c, 77d as positioning marks are provided in the vicinity of the outer periphery of the flange portion 69. It has been.

The beam reinforcing metal fitting 65 is also attached to the beam 15 by fastening means such as bolts as in the first embodiment. Thereafter, a fireproof material is sprayed on the beam reinforcing bracket 65 and the beam 15 as necessary, and piping or the like is installed in the through hole 73.

As described above, according to the fourth embodiment, the same effect as that of the first embodiment is obtained, and the through hole 73 of the beam reinforcing metal fitting 65 is formed into an ellipse. Therefore, even if two cylindrical pipes are arranged side by side through the through-hole 73, the gap between the through-hole 73 and the pipe is small, so that the process of filling the gap is reduced, and workability and cost are improved.

Next, a fifth embodiment will be described. 7A and 7B are views showing a beam reinforcing bracket 81 according to the fifth embodiment, in which FIG. 7A is a longitudinal sectional view of the beam reinforcing bracket 81, and FIG. 7B is a J direction of FIG. 7A. An arrow view and FIG.7 (c) are K direction arrow view views of Fig.7 (a). Note that the mounting method is the same as that in the first embodiment, and is omitted. The beam reinforcing bracket 81 according to the fifth embodiment is provided with a tapered portion 91 in the through hole 9 of the beam reinforcing bracket 1 according to the first embodiment.

A main body 83 of the beam reinforcing metal member 81 has a ring shape, and has a thin-walled flange portion 85 on the outer peripheral portion, and a close contact portion 87 is provided between the flange portion 85 and the main body 83. A through hole 89 is provided at the center of the beam reinforcing bracket 81, and a tapered portion 91 is provided at the inner periphery of the through hole 89. Further, bolt insertion holes 93a, 93b, 93c, 93d are provided near the center of the flange portion 85, and projecting pieces 95a, 95b, 95c, 95d as positioning marks are provided near the outer periphery of the flange portion 85. It has been.

The beam reinforcing bracket 81 is also attached to the beam 15 by fastening means such as bolts as in the first embodiment. Thereafter, a fireproof material is sprayed on the beam reinforcing bracket 81 and the beam 15 as necessary, and piping or the like is installed in the through hole 89.

FIG. 8 shows the beam reinforcing bracket 81 when the pipe 97 is installed in the fifth embodiment, and FIG. 8A is a longitudinal sectional view in the vicinity of the through hole 89 of the beam reinforcing bracket 81. FIGS. 8B and 8C are diagrams showing a modification of FIG. 8A.
As shown in FIG. 8A, since the tapered portion 91 is provided on the inner periphery of the through hole 89 of the beam reinforcing bracket 81, the pipe 97 is formed into the through hole 89 obliquely with respect to the beam reinforcing bracket 81 and the beam 15. Can pass through.
Further, as shown in FIG. 8B, a curved surface 91 b having a curved surface as a whole may be provided on the inner periphery of the through hole 89. Further, as in a curved surface 91c as shown in FIG. 8C, the whole may be a curved surface only at the end portion, not a curved surface.

Thus, according to the fifth embodiment, in addition to the same effects as those of the first embodiment, the tapered portion 91 is provided on the inner periphery of the through hole 89 of the beam reinforcing bracket 81. Accordingly, since the pipe 97 can be passed through the through hole 31 obliquely with respect to the beam 15, the degree of freedom in pipe design can be increased.

Next, a sixth embodiment will be described. FIG. 9 is a view showing a beam reinforcing metal fitting 101 according to the sixth embodiment. The beam reinforcing bracket 101 according to the sixth embodiment is provided with marking lines 105a, 105b, 105c, and 105d instead of the protruding portions 13a, 13b, 3c, and 13d of the beam reinforcing bracket 1 according to the first embodiment. It is a thing.

In the vicinity of the outer periphery of the flange portion 103 of the beam reinforcing bracket 101, marking lines 105a, 105b, 105c, and 105d are provided as positioning marks.
The marking lines 105 a, 105 b, 105 c, and 105 d may be provided only on the side surface portion of the flange portion 103.

As described above, according to the sixth embodiment, the same effects as those of the first embodiment can be obtained, and the marking lines 105a, 105b, 105c, and 105d as positioning marks are provided in advance on the beam reinforcing bracket 101. Therefore, it is not necessary to separately attach a protruding piece or the like to the beam reinforcing bracket 101 as a positioning mark. The positioning mark may be provided with a concave groove in addition to the protruding piece and the marking line.

  As mentioned above, although embodiment of this invention was described referring an accompanying drawing, the technical scope of this invention is not influenced by embodiment mentioned above. It is obvious for those skilled in the art that various modifications or modifications can be conceived within the scope of the technical idea described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs.

The figure which shows the beam reinforcement metal fitting 1 of 1st Embodiment. The figure which shows the attachment method of the beam reinforcement metal fitting 1 of 1st Embodiment. The figure which shows the attachment method of the beam reinforcement metal fitting 1 of 1st Embodiment. The figure which shows the beam reinforcement metal fitting 35 of 2nd Embodiment. The figure which shows the beam reinforcement metal fitting 51 of 3rd Embodiment. The figure which shows the beam reinforcement metal fitting 65 of 4th Embodiment. The figure which shows the beam reinforcement metal fitting 81 of 5th Embodiment. The figure which shows the beam reinforcement metal fitting 81 at the time of installing the piping 97 in 5th Embodiment. The figure which shows the beam reinforcement metal fitting 91 of 6th Embodiment. The perspective view which shows the beam 113 which attached the beam reinforcement metal fitting 111. FIG. The longitudinal cross-sectional view of the beam 113 which attached the beam reinforcement metal fitting 111. FIG.

Explanation of symbols

1 ………… Beam reinforcement bracket 2 ………… Body 3 ………… Close contact part 5 ………… Flange part 9 ………… Through hole 12a …… Bolt insertion hole 13a …… Projecting piece 15 ………… Beam 17 ......... Through hole 18a ... Bolt insertion hole 19a ... Mark line 20 ......... End face 21a ... Bolt 23 ......... Washer 25 ......... Nut 35 ......... Beam reinforcement bracket 44 ......... Fireproof Material 51... Beam reinforcement bracket 59... Through hole 65... Beam reinforcement bracket 73... Through hole 81 ... Beam reinforcement bracket 91 ... Tapered portion 91b ... Curved surface 91c. …… Beam reinforcement bracket 105a …… Marking line 111 …… Beam reinforcement bracket 113 ……… Beam 115 ……… Through hole 121… ...... Tapered portion

Claims (7)

A beam reinforcing bracket fixed to a peripheral portion of a through hole formed in a beam by using a fastening means, wherein the peripheral portion of the through hole and the outer peripheral portion of the beam reinforcing bracket have a close contact portion , and the beam reinforcing bracket A beam reinforcing metal fitting having a curved surface in the axial cross-sectional direction on the entire inner peripheral portion thereof .   The beam reinforcing bracket according to claim 1, wherein the beam reinforcing bracket has different shapes of an inner peripheral portion and an outer peripheral portion. The said beam reinforcement metal fitting has fire resistance, The beam reinforcement metal fitting of Claim 1 or Claim 2 characterized by the above-mentioned. The beam reinforcing bracket according to claim 3 , wherein the beam reinforcing bracket is provided with a refractory material at least on an inner peripheral portion thereof. The beam reinforcing bracket according to claim 3 , wherein the beam reinforcing bracket is made of refractory steel.   The said beam reinforcement metal fitting has a mark for positioning, The beam reinforcement metal fitting in any one of Claims 1-5 characterized by the above-mentioned. A through hole provided in the beam;
A beam reinforcing bracket provided in the through-hole, and provided with a hole having a curved surface in the axial cross-sectional direction on the entire inner peripheral portion;
A pipe that is passed through the hole of the beam reinforcing bracket obliquely with respect to the axial direction;
A piping structure characterized by comprising:

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