JP7272823B2 - Beam reinforcement structure and beam reinforcement method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a beam reinforcing structure and a beam reinforcing method for reinforcing a beam having through-holes in a building structure.

Conventionally, through-holes are sometimes formed in beams of building structures for the passage of pipes and wiring. In this case, the through holes reduce the bending resistance of the beam. In order to prevent this deterioration of the bending strength of the beams, beam reinforcing metal fittings are attached to the beams to reinforce the beams.

As such a beam reinforcing metal fitting, for example, there is a beam reinforcing metal fitting which is a ring-shaped member and is joined to a through hole formed in a beam (for example, Patent Document 1).

JP 2009-167615 A

A general beam reinforcing metal fitting is ring-shaped and has a portion having an outer diameter larger than that of the through hole and a portion having an outer diameter smaller than that of the through hole and inserted into the through hole. Therefore, when joining the beam reinforcing metal fittings to the beam, the work of inserting the beam reinforcing metal fittings into the through-holes and the work of welding the beam reinforcing metal fittings to the beams are performed on different surfaces of the member with the through-holes. You can do it from the side.

For example, if a through hole is formed in the web of a beam, temporarily place the beam so that one side of the web faces up, insert the beam reinforcing bracket into the through hole from above, and then insert the other side of the web. The beam is sometimes flipped over so that the side is up and the beam stiffener is welded to the other side of the web. If it is necessary to turn over the beams in the middle of the joining work in this way, workability is poor.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a beam reinforcing structure and a beam reinforcing method that are easy to work when fixing to a beam.

In order to achieve the above object, the first invention is a beam reinforcing structure using a beam reinforcing metal fitting, comprising a beam having a web formed with a through hole and a plurality of divided beams around or at the edge of the through hole. The beam reinforcing metal fittings are fixed, the beam reinforcing metal fittings are joined together in the circumferential direction, a groove is formed in the outer peripheral surface of the beam reinforcing metal fitting, the edge of the web is inserted into the groove, and the beam reinforcing metal fitting is inserted into the groove. The beam reinforcing structure is characterized in that metal fittings are arranged so as to sandwich the edge of the web .
A second invention is a beam reinforcing structure using a beam reinforcing metal fitting, comprising a beam having a web formed with a through hole, a body portion inserted into the through hole, and a flange contacting the edge of the through hole. A beam reinforcing metal fitting having a portion, wherein an arc-shaped beam reinforcing metal fitting divided into two or more is fixed around or at the edge of the through hole, and the beam reinforcing metal fittings are joined together in the circumferential direction. It is a beam reinforcement structure characterized by

In the first invention, the groove may have a different groove depth depending on the part.

According to the first and second inventions, since the beam reinforcing metal fitting is divided into a plurality of parts, the beam reinforcing metal fitting can be arranged in the through hole from either side of the web. Therefore, the beam reinforcing metal fitting can be arranged in the through-hole in a state that the beam is temporarily placed so that the work surface for fixing the beam reinforcing metal fitting to the web faces up, and the beam need not be reversed in the middle. In addition, since the beam reinforcing metal fittings are joined together in the circumferential direction, a reinforcing effect equivalent to that obtained when ring-shaped beam reinforcing metal fittings are used can be obtained.

In the first invention , the beam reinforcing metal fittings are arranged so as to sandwich the edge of the web, so that if there are burrs or corner dropouts on the edges of the through holes, they can be hidden by the beam reinforcing metal fittings.
In particular, if the groove depth is different depending on the part, the beam reinforcing metal fitting can be applied to a beam reinforcing structure with different web thicknesses, increasing versatility.

A third invention is a beam reinforcing method using the beam reinforcing metal fittings of the first or second invention, wherein a plurality of the beam reinforcing metal fittings are attached around or at the edges of through holes formed in the web of the beam. The beam reinforcing method is characterized in that the beam reinforcing metal fittings are fixed to each other and joined together in the circumferential direction.

According to the third invention, the beam reinforcing metal fitting can be inserted into the through-hole from either side of the web. In addition, by joining the beam reinforcing metal fittings together in the circumferential direction, a reinforcing effect equivalent to that obtained by using ring-shaped beam reinforcing metal fittings can be obtained.

ADVANTAGE OF THE INVENTION According to this invention, the beam reinforcement metal fitting and the reinforcement method of a beam with the favorable workability|operativity at the time of fixing to a beam can be provided.

The perspective view which shows the beam reinforcement metal fitting 1. FIG. It is a perspective view which shows the beam reinforcement structure 10, (a) is a figure which shows the back 15b side, (b) is a figure which shows the front 15a side. (a) is a front view showing the beam reinforcing structure 10, and (b) is a sectional view taken along line AA of (a). Sectional drawing which shows the beam reinforcement structure using the beam reinforcement metal fitting 1a. Sectional drawing which shows the beam reinforcement structure using the beam reinforcement metal fitting 1b. Sectional drawing which shows the beam reinforcement structure using the beam reinforcement metal fitting in which a groove part is not provided.

(First embodiment)
BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below. FIG. 1 is a perspective view showing a beam reinforcing metal fitting 1 according to the first embodiment. A beam reinforcing metal fitting 1 is a member for reinforcing a beam having through holes formed in a web.

The beam reinforcing metal fitting 1 is an arc-shaped member obtained by dividing a ring into a plurality of parts. Although FIG. 1 shows an example in which the ring is divided into three, the number of divisions should be 3 or more, and 3 or 4 is most desirable. A groove portion 7 is formed on the outer peripheral surface of the beam reinforcing metal fitting 1 . The cross section of the groove portion 7 is rectangular. No unevenness is formed on the inner peripheral surface of the beam reinforcing metal fitting 1 .

The beam reinforcing metal fitting 1 is, for example, a member made of metal such as steel or stainless steel. The beam reinforcing metal fitting 1 may be manufactured by dividing a cylindrical material in the circumferential direction, or may be manufactured in an arc shape from the beginning.

Next, the beam reinforcing structure 10 using the beam reinforcing metal fittings 1 will be described. 2(a) is a perspective view of the beam reinforcing structure 10 viewed from the rear surface 15b side, and FIG. 2(b) is a perspective view of the beam reinforcing structure 10 viewed from the front surface 15a side. 3(a) is a front view of the beam reinforcing structure 10, and FIG. 3(b) is a sectional view taken along the line AA of FIG. 3(a).

The beam 11 is H steel with flanges 13 above and below the web 15 . The web 15 is formed with a through hole 17 for passing a pipe or the like. The beam reinforcing metal fitting 1 divided into a plurality of pieces is arranged around or at the edge of the through hole 17 . The edge of the web 15 is inserted into the groove portion 7 of the beam reinforcing metal fitting 1 . The beam reinforcing metal fittings 1 are arranged so as to sandwich the edge of the web 15 . As a result, even if there is a burr or a corner drop on the edge of the through hole 17, it can be hidden by the beam reinforcing metal fitting 1.例文帳に追加

The beam reinforcing metal fitting 1 is joined to the web 15 by welding. In this embodiment, the arc portion on the outer peripheral side of the beam reinforcing metal fitting 1 is welded to the web 15, and the beam reinforcing metal fittings 1 are welded together in the circumferential direction. That is, the welded portion 19 a is formed between the outer peripheral portion of the plurality of beam reinforcing metal fittings 1 arranged in a ring shape and the front surface 15 a of the web 15 . The welded portion 19b is formed between the beam reinforcing metal fittings 1 . A plurality of beam reinforcing metal fittings 1 joined in a ring shape have piping holes through which piping or the like passes.

Next, a beam reinforcement method using the beam reinforcement fitting 1 (construction method of the beam reinforcement structure 10) will be described. First, the beam 11 is temporarily placed on the ground so that the front surface 15a side of the web 15 faces upward, and the first beam reinforcing metal fitting 1 is inserted into the through hole 17 from the front surface 15a side of the web 15 of the beam 11. 7 insert the edge of the web 15;

At this time, the bottom portion of the groove portion 7 of the beam reinforcing metal fitting 1 has an outer diameter smaller than the diameter of the through hole 17 . Also, the width of the grooves 7 is greater than the thickness of the web 15 . Therefore, when the edge of the web 15 is inserted into the groove 7 , the bottom of the groove 7 can be brought into contact with the inner peripheral surface of the through hole 17 . Further, the edge of the web 15 can be sandwiched between the beam reinforcing metal fittings 1 by bringing the side surface of the groove 7 into surface contact with the front surface 15 a and the rear surface 15 b of the web 15 . That is, the groove portion 7 is used for axial and radial positioning when the beam reinforcing metal fitting 1 is arranged in the through hole 17 .

After the position of the first beam reinforcing metal fitting 1 is determined, the remaining beam reinforcing metal fittings 1 are arranged in the same manner. Then, from the front surface 15a side of the web 15, a welded portion 19a is formed between the arc portion on the outer peripheral side of the beam reinforcing metal fitting 1 and the front surface 15a of the web 15 to fix the beam reinforcing metal fitting 1 to the web 15, and the beam reinforcing metal fitting 1 is fixed to the web 15. A welding portion 19b is formed between the reinforcing metal fittings 1 to join the beam reinforcing metal fittings 1 to each other. Welding is performed, for example, by shielded arc welding.

As described above, the beam reinforcing structure 10 can be obtained. The beam reinforcing metal fitting 1 can improve the bending strength of the beam 11 in the vicinity of the through hole 17 .

As described above, according to the present embodiment, since the arc-shaped beam reinforcing metal fitting 1 obtained by dividing the ring into three or more parts is used, the beam reinforcing metal fitting 1 can be inserted into the through hole 17 from either side of the web 15. can be placed. Therefore, after the beam 11 is temporarily placed on the ground so that the front surface 15a, which is the work surface for welding, faces upward, the beam reinforcing metal fitting 1 is placed in the through hole, and then the beam reinforcing metal fitting 1 is placed in the through hole without turning the beam 11 upside down. can be welded, so workability is good. Moreover, since the beam reinforcing metal fittings 1 are joined together in the circumferential direction, a reinforcing effect equivalent to that obtained by using ring-shaped beam reinforcing metal fittings can be obtained.

In the first embodiment, the optimum number of divisions of the beam reinforcing metal fitting 1 is 3 or 4, but it may be divided into a larger number. Since the range of diameters of the through-holes 17 that can be dealt with is widened by dividing into a large number, it is possible to absorb the construction error of the through-holes 17, and the versatility is enhanced.

(Second embodiment)
Next, a second embodiment will be described. FIG. 4 is a sectional view showing a beam reinforcing structure using beam reinforcing metal fittings 1a. In the following description, structures having the same functions as those of the beam reinforcing metal fitting 1 and the beam reinforcing structure 10 are denoted by the same reference numerals as in FIGS. 1 to 3, and duplicate descriptions are omitted.

The beam reinforcing metal fitting 1a differs in configuration from the beam reinforcing metal fitting 1 in that a step is provided at the bottom of the groove portion 7 . In the beam reinforcing metal fitting 1a, the depth of the groove portion 7 differs depending on the portion in the axial direction (horizontal direction shown in FIG. 4).

In the example shown in FIG. 4A, the deep bottom of the groove 7 of the beam reinforcing metal fitting 1a has an outer diameter smaller than the diameter of the through hole. Also, the width of the deep portion of the groove 7 is greater than the thickness of the web 15 . Therefore, when the edge of the web 15 is inserted into the groove 7, the deep bottom of the groove 7 can be brought into contact with the inner peripheral surface of the through hole. Further, the side surface of the groove portion 7 is brought into surface contact with the front surface 15a of the web 15, and the web 15 can be sandwiched between the beam reinforcing metal fittings 1a. That is, the groove portion 7 is used for axial and radial positioning when the beam reinforcing metal fitting 1a is arranged in the through hole.

In the example shown in FIG. 4(b), the shallower bottom portion of the groove portion 7 of the beam reinforcing metal fitting 1a has an outer diameter smaller than the diameter of the through hole. Further, the width of the deep portion of the groove 7 is smaller than the thickness of the web 15 and the width of the entire groove 7 is larger than the thickness of the web 15 . Therefore, when the edge of the web 15 is inserted into the groove 7, the shallower bottom of the groove 7 can be brought into contact with the inner peripheral surface of the through hole. Further, the side surface of the groove portion 7 can be brought into surface contact with the front surface 15a and the rear surface 15b of the web 15 so that the web 15 can be sandwiched between the beam reinforcing metal fittings 1a. That is, the groove portion 7 is used for axial and radial positioning when the beam reinforcing metal fitting 1a is arranged in the through hole.

In the example shown in FIG. 4A, the groove 7 is used as a groove for welding, and a welding portion 19a is provided between the shallow bottom of the groove 7 and the back surface 15b of the web 15. In the example shown in (b), a welded portion 19a is provided between the outer peripheral surface of the beam reinforcing metal fitting 1a and the back surface 15b of the web 15. In the example shown in FIG. Therefore, in any example, it is desirable to place the beam reinforcing metal fitting 1a in the through hole in a state in which the beam 11 is temporarily placed on the ground so that the back surface 15b side of the web 15 faces upward. Alternatively, the beam 11 may be temporarily placed on the ground so that the front surface 15a side of the web 15 faces upward, and the beam reinforcing metal fitting 1a may be placed in the through hole to form the welded portion 19a on the front surface 15a side of the web 15 .

According to the second embodiment, effects similar to those of the first embodiment can be obtained. Furthermore, since the depth of the groove portion 7 of the beam reinforcing metal fitting 1a differs depending on the location, it can be applied to a reinforcing structure for the beam 11 having webs 15 of different thicknesses, and has high versatility.

(Third embodiment)
Next, a third embodiment will be described. FIG. 5 is a sectional view showing a beam reinforcing structure using the beam reinforcing metal fittings 1b.
The beam reinforcing metal fitting 1b is different in configuration from the beam reinforcing metal fitting 1 in that the cross section of the groove portion 7 is arcuate. In the beam reinforcing metal fitting 1b, the depth of the groove portion 7 differs depending on the portion in the axial direction (horizontal direction shown in FIG. 5).

In the example shown in FIG. 5, the width of the groove 7 on the outer peripheral side of the beam reinforcing metal fitting 1b is greater than the thickness of the web 15, and the width of the groove 7 gradually decreases from the outer peripheral side to the inner peripheral side of the beam reinforcing metal fitting 1b. Become. Therefore, when the edge of the web 15 is inserted into the groove 7, the web 15 is brought into contact with the inner peripheral surface of the groove 7, and the web 15 can be sandwiched between the beam reinforcing metal fittings 1b.

Here, in the example shown in FIG. 5A, since the web 15 is relatively thin, the groove 7 is used as a groove for welding, and the welded portion 19a is formed between the inner peripheral surface of the groove 7 and the web 15. It is formed. In the example shown in FIG. 5B, since the web 15 is relatively thick, a welded portion 19a is formed between the web 15 and the outer peripheral surface of the beam reinforcing metal fitting 1b.

According to the third embodiment, effects similar to those of the first embodiment can be obtained. Furthermore, the beam reinforcing metal fitting 1b, like the beam reinforcing metal fitting 1a, has different depths of the grooves 7 depending on the location, so that it can be applied to the reinforcing structure of the beam 11 having the webs 15 of different thicknesses, and has high versatility.

(Fourth embodiment)
Next, a fourth embodiment will be described. FIG. 6 is a cross-sectional view showing a beam reinforcing structure using beam reinforcing metal fittings that are not provided with grooves.
A beam reinforcing metal fitting 1c shown in FIG. 6A differs from the beam reinforcing metal fitting 1 in that no groove is provided.

The beam reinforcing metal fitting 1 c is composed of a body portion 3 and a flange portion 5 . The flange portion 5 is arranged on one side of the main body portion 3 in the axial direction. The inner diameters of the main body portion 3 and the flange portion 5 are substantially the same, and no unevenness is formed on the inner peripheral surface. The flange portion 5 has a larger outer diameter than the body portion 3 .

The beam reinforcing metal fitting 1c has the body portion 3 inserted into the through hole, and the flange portion 5 contacts the front surface 15a side of the web 15 near the edge of the through hole. As a result, even if there are burrs or corner omissions on the edge of the through hole, they can be hidden by the beam reinforcing metal fitting 1c.

In order to reinforce the beam 11 using the beam reinforcing metal fitting 1c, first, the beam 11 is temporarily placed on the ground so that the front 15a side of the web 15 faces upward, and the main body portion 3 of the first beam reinforcing metal fitting 1c is placed. , is inserted into the through hole from the front face 15a side of the web 15 of the beam 11. As shown in FIG. At this time, the flange portion 5 of the beam reinforcing metal fitting 1c has an outer diameter larger than that of the through hole. Further, the body portion 3 has an outer diameter smaller than the diameter of the through hole. Therefore, the outer periphery of the body portion 3 can be brought into contact with the inner peripheral surface of the through hole 17 and the flange portion 5 can be brought into contact with the front surface 15 a of the web 15 . That is, when the beam reinforcing metal fitting 1c is arranged in the through hole 17, the main body portion 3 is used for positioning in the radial direction, and the flange portion 5 is used for positioning in the axial direction.

After the position of the first beam reinforcing metal fitting 1c is determined, the remaining beam reinforcing metal fittings 1c are arranged in the same manner. A welded portion 19a is formed between the front surface 15a side of the web 15 and the front surface 15a of the web 15 and the arc portion on the outer peripheral side of the flange portion 5 to fix the beam reinforcing metal fitting 1a to the web 15. Moreover, the beam reinforcing metal fittings 1c are joined together by forming a welded portion (not shown) between the beam reinforcing metal fittings 1c.

In addition, in the fourth embodiment, the outer peripheral surface of the main body 3 may be tapered like a beam reinforcing metal fitting 1d shown in FIG. 6(b). In this way, by forming a tapered shape so that the outer diameter gradually decreases from the flange portion 5 side toward the tip side, the outer peripheral portion of the main body portion 3 can be used as a groove for welding. . In this case, after temporarily placing the beam 11 on the ground so that the back surface 15b side of the web 15 faces upward and arranging the beam reinforcing metal fitting 1d in the through hole, the main body 3 and the inner surface of the through hole 17 are installed from the back surface 15b of the web 15. It is desirable to form a welded portion 19a between.

In the fourth embodiment, the same effect as in the first embodiment can be obtained by using arc-shaped beam reinforcing metal fittings 1c and 1d obtained by dividing the ring into two or more. In the first to third embodiments, by using beam reinforcing metal fittings in which the ring is divided into three or more, the web 15 can be arranged around or at the edge of the through hole from any side of the web 15. Since the reinforcing metal fittings 1c and 1d are composed of the body portion 3 and the flange portion 5, if they are divided into two or more, they can be arranged around or at the edge of the through hole 17 from either side of the web 15. can.

In addition, in the fourth embodiment, the beam reinforcing metal fitting is composed of the body portion and the flange portion, but the flange portion may not be provided. That is, the beam reinforcing metal fitting may be composed only of the main body.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the technical scope of the present invention is not influenced by the above-described embodiments. It is obvious that a person skilled in the art can conceive various modifications or modifications within the scope of the technical idea described in the claims, and these are naturally within the technical scope of the present invention. be understood to belong to

For example, in the first to fourth embodiments, the beam reinforcing metal fittings are arcuate, but the shape is not limited to arcuate. When the through-hole is rectangular or the like, a plurality of beam reinforcing metal fittings joined in the circumferential direction may be formed in the shape of a rectangular tube.

Reference numerals 1, 1a, 1b, 1c, 1d Beam reinforcing metal fittings 3 Body portion 5 Flange portion 7 Groove portion 10 Beam reinforcing structure 11 Beam 13 Flange 15 Web 15a Front 15b Rear 17 Through holes 19a, 19b Welding

Claims (4)

A beam reinforcing structure using a beam reinforcing metal fitting,
a beam having through holes formed in the web;
A plurality of divided beam reinforcing metal fittings are fixed around or at the edge of the through hole, and the beam reinforcing metal fittings are joined together in the circumferential direction ,
A beam characterized in that a groove is formed in the outer peripheral surface of the beam reinforcing metal fitting, an edge of the web is inserted into the groove, and the beam reinforcing metal fitting is arranged so as to sandwich the edge of the web. reinforced structure. 2. A beam reinforcing structure according to claim 1 , wherein said grooves have different groove depths depending on their positions. A beam reinforcing structure using a beam reinforcing metal fitting,
a beam having through holes formed in the web;
a beam reinforcing bracket having a body portion inserted into the through hole and a flange portion contacting the edge of the through hole;
A beam reinforcing structure , wherein arc-shaped beam reinforcing metal fittings divided into two or more are fixed around or at the edge of the through-hole, and the beam reinforcing metal fittings are joined together in the circumferential direction. A beam reinforcing method using the beam reinforcing metal fitting according to any one of claims 1 to 3,
A beam reinforcing method comprising the steps of: fixing a plurality of beam reinforcing metal fittings around or at the edges of through holes formed in a web of a beam; and joining the beam reinforcing metal fittings together in a circumferential direction.

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