JPH09317027A - Beam reinforcement structure and reinforcement metal fittings - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reinforce only a place requiring reinforcement with no welding simply, without inviting the complication of a member control and the drop of a productivity, when construction members of various different kinds and positions are installed to a steel frame beam. SOLUTION: Structure members for constituting a reinforcement structure for reinforcing the structure member installation places of steel frame beams 4, 5 are reinforcement frames 2 with brace and stands. Reinforcement metal fittings 13 are installed while contacting to the inner surfaces of flanges 4b, 5a and the inner surfaces of webs 4c, 5c at the place for installing the structure members of the steel frame beams 4, 5. The reinforcement metal fittings 13 are connected to the webs 4c, 5c of the steel frame beams 4, 5 with the shaft shape tightening tools 11A like bolts and also the reinforcement metal fittings 13 as well as the structure members are connected to the flanges 4b, 5a of the steel frame beams 4, 5 with a shaft shape tightening tools 11B.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a beam-reinforced structure for a steel-framed building, particularly a prefabricated steel-framed building such as a unit house, and a reinforcing metal member thereof.

[0002]

2. Description of the Related Art When joining structural members such as studs to a steel beam, it is necessary to reinforce the joints with rib plates or the like.
However, welding of rib plates is poor in manual workability, and quality control is difficult. On the other hand, the structural members and their joints that are joined to the beams vary depending on the building and its parts.
If beams prepared by welding rib plates to only the necessary parts are prepared, there will be too many types, and quality control and automatic welding will be difficult. Therefore, when the steel frame beam is prefabricated, as shown in FIG. 8, the rib plates 43 are attached to all the portions where structural members such as the studs 42 of the steel beam 41 and the brace panel (not shown) may be attached. It is customary to weld.

[0003]

However, if the rib plates 43 are provided at all the portions where the structural members can be attached, the number of unnecessary rib plates 43 becomes too large in one building. . For example, half or more of the rib plates 43 are unnecessary. As a result, materials and welding work are wasted, resulting in high costs.

The present invention solves such a problem, and the steel beam can be easily reinforced without welding, and the reinforcement is performed only at the portion requiring the reinforcement without complicating the member management and reducing the productivity. However, it is an object of the present invention to provide a beam reinforcing structure and a reinforcing metal member that can reduce costs by reducing unnecessary members and work.

[0005]

SUMMARY OF THE INVENTION A beam reinforcing structure of the present invention is a structure for reinforcing a structural member mounting portion of a steel frame beam, wherein an inner surface of a flange and an inner surface of a web at a portion of the steel frame beam where the structural member is mounted. A reinforcing metal fitting in contact with the beam, the reinforcing metal fitting being joined to the web of the beam with an axial fastener, and the reinforcing metal fitting together with the structural member being bonded to the flange of the beam with an axial fastener. is there. According to this structure, since the reinforcing metal fitting is attached by the axial fastening tool such as the bolt, the one-side bolt and the rivet, the beam can be provided with the insertion hole for the axial fastening tool without welding. Can be easily installed. Therefore, for beams with different mounting positions of structural members, it is possible to reinforce only those parts that need to be reinforced without complicating member management and reducing productivity, and eliminate unnecessary work and members to reduce costs. be able to. Since the reinforcing metal fitting is designed to be bonded to the inner surface of the flange of the beam and the inner surface of the web, it can be firmly attached, and the dimensional tolerance between the upper and lower flanges of the beam,
The same metal joint can be used to deal with the difference in beam formation. Further, since the work of joining the reinforcing metal also serves as the work of joining the structural members, the number of work steps can be reduced accordingly.

In the beam reinforcing structure, the reinforcing metal object is a bent plate-shaped metal object body bent in an L-shape, and a pair of welded parts on both side edges of the metal object body to a vertical piece and a horizontal piece of the metal object body. The reinforcing member may be formed of parallel reinforcing plates, and the vertical piece and the horizontal piece of the metal body may each have an insertion hole for a shaft-shaped fastener. In the case of this configuration, the standing piece of the metal body of the reinforcing metal fitting is joined to the web inner surface of the steel beam, and the horizontal piece of the metal body is bonded to the inner surface of the flange of the steel frame member with the axial fasteners, respectively. The structural member mounting location can be easily reinforced. Since this reinforcing metal member is composed of a folded plate-shaped metal member main body and a pair of parallel reinforcing plates, it has a simple structure, is easy to manufacture, and can be solid.

In the beam reinforcing structure, the steel frame beam is a ceiling beam or a floor beam of the unit box, and the structural member is a bracing reinforcing frame interposed between the ceiling beam and the floor beam. The structural member attachment points may be at both ends of the reinforcing frame with braces. In this configuration, the reinforcing frame with braces is attached to the unit box to improve the rigidity against interlayer displacement, etc., so that the reinforcing frame with braces for ceiling beams and floor beams can be easily reinforced and a unit box with a solid structure can be provided. It can be easily manufactured. In addition, by mounting such a reinforcing frame with braces, the beams and columns of the unit box are bolted instead of rigidly joined by welding, and the productivity of the unit box and the reliability of the joints are improved. You can

A reinforcing metal article of the present invention is a metal article for reinforcing a structural member mounting portion of a steel frame beam, and is a bent plate-like metal article body bent in an L shape, and both side edges of the metal article body of the metal article body. It is composed of a pair of parallel reinforcing plates welded to the vertical piece and the horizontal piece, and each of the vertical piece and the horizontal piece of the metal body has an insertion hole for the axial fastener. The vertical piece is attached to the inner surface of the web of the steel beam, and the horizontal piece is attached to the inner surface of the flange of the steel beam by axial fasteners.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. The beam reinforcing structure according to this embodiment has a vertical reinforcing frame with braces, which is a structural member, between a ceiling beam 4 and a floor beam 5 in a unit box 1 as shown in FIG. When 2 and 2A are attached as shown in FIG. 6, the reinforcing frame attachment points of the ceiling beam 4 and the floor beam 5 are reinforced. The unit box 1 is provided between the columns 3 at the four corners made of steel frame such as a square steel pipe,
A ceiling beam 4 and a floor beam 5 made of steel frame such as channel steel are joined and framed so that the groove surfaces face outward or inward, and wall panels, floor panels, ceiling panels, etc. A panel (neither shown) is attached. The beams 4 and 5 and the columns 3 are joined to each other by joining the end plate portions of the beams 4 and 5 to the columns with bolts 6 as shown in FIG. 4B.
The reinforcing frames 2 and 2A with braces of FIG. 6 frame a vertical frame member 7 and a horizontal frame member 8 made of lightweight shaped steel such as channel steel in a rectangular shape by bolt joining or welding joining outward or inward, A cross rail 9 and a brace 10 which are also made of channel steel are joined to the frame.

The webs 4c and 5c of the ceiling beam 4 and the floor beam 5 in the unit box 1 are, for example, as shown in FIG.
As shown in FIG. 3, insertion holes 12A, 12B (FIG. 3) for the bolts 11A, 11B are provided at respective places where structural members such as the bracing reinforcing frames 2, 2A and studs may be attached. That is, when the unit box frame composed of the pillars 3 and the beams 4 and 5 is commonly used and various structural members such as the reinforcing frames with braces 2 and 2A are attached to the unit box frame to form different unit boxes 1, The bolt insertion holes 12A and 12B are provided at the locations where the structural members of (1) are mounted. Due to the modular design of the building, the mounting positions of these structural members are arranged at positions that are integral multiples of the reference dimensions from the predetermined positions of the unit box 1. As shown in FIG. 6 (A), when the reinforcing frame 2 with braces is interposed between the ceiling beam 4 and the floor beam 5 of the unit box 1, the left and right ends of the reinforcing frame 2 are reinforced as shown in FIG. Along with the hardware 13, they are joined to the flanges 4b and 5a of the ceiling beam 4 and the floor beam 5 with bolts 11A which are axial fasteners. One-sided bolts or rivets may be used as the axial fastener.

As shown in FIG. 3, the reinforcing hardware 13 is a bent plate-shaped metal body 14 bent in an L-shape, and the metal body 14
14a and side piece 14b of the metal body 14 on both side edges of the
It is composed of a pair of parallel reinforcing plates 15, 15 welded to each other. The bolt 11 is provided on the upright piece 14a and the horizontal piece 14b.
Insertion holes 16A and 16B for A and 11B are provided.
These insertion holes 16A and 16B are preferably provided near the tips of the standing piece 14a and the horizontal piece 14b, respectively, and are provided near the tips in this example. In the ceiling beam 4, the reinforcing metal member 13 is arranged so as to contact the inner surface of the lower flange 4b and the inner surface of the web 4c, and the upper side of the vertical frame member 7 of the reinforcing frame 2 with braces extends from the lower side of the ceiling beam 4. Flange 4b
The nut 17B is screwed into the bolt 11B penetrating the insertion hole 12B of the reinforcing metal member 13 and the insertion hole 16B of the reinforcing metal member 13 so that the reinforcing frame 13 with braces and the reinforcing metal member 13 are joined together.
Is joined to the lower flange 4b of the ceiling beam 4. Further, the nut 17A is screwed into the bolt 11A penetrating the through hole 12A of the web 4c of the ceiling beam 4 and the through hole 16A of the reinforcing metal item 13, thereby joining the reinforcing metal item 13 to the inner surface of the web 4c of the ceiling beam 4. .

As shown in FIG. 1, the reinforcing metal member 13 is arranged so as to contact the inner surface of the upper flange 5a and the inner surface of the web 5c of the floor beam 5, and as in the case of the ceiling beam 4, the reinforcing metal member 13 is formed. At the same time, the lower end of the reinforcing frame 2 with braces is joined to the upper flange 5 a of the floor beam 5. Note that the posture of the reinforcing hardware 13 is upside down as compared with the case of the ceiling beam 4.

When the mounting portion of the reinforcing frame 2 with braces is the outer wall portion, the outer surface of the reinforcing frame 2 is aligned with the outer ends of the ceiling beam 4 and the floor beam 5 as shown in FIG. 1 (B). The outer wall panel (not shown) can be installed from the upper end of the ceiling beam 4 to the lower end of the floor beam 5. On the other hand, in the portion where the outer wall panel is not arranged, the bracing reinforcing frame 2 may be installed at an intermediate position in the width direction of the ceiling beam 4 and the floor beam 5 as shown in FIG. In addition,
The reinforcing frame 2 with braces may be interposed not only on the girder side of the unit box 1 but also between the ceiling beams 4 and floor beams 5 on the end side as shown in FIG. 6 (B).

In the above embodiment, the case where the bracing reinforcement frames 2 and 2A are interposed between the ceiling beam 4 and the floor beam 5 has been described. However, as shown in FIG. A stud 18 made of, for example, channel steel may be mounted between the floor beam 4 and the floor beam 5. Also in this case, the reinforcing metal member 1 is attached to the mounting portion of the stud 18 of the ceiling beam 4 and the floor beam 5.
3 is joined in the same manner.

According to the beam-reinforcing structure having this structure, since the reinforcing metal member 13 is attached by the axial fastener, the beams 4, 5 are attached.
The shaft-shaped fastener can be easily attached without welding by only providing the through holes 12A and 12B for the shaft-shaped fastener. Therefore, the beams 4 and 5 to which the structural members such as the brace-reinforced frames 2 and 2A and the studs 18 are attached are different from each other, and only the place where the reinforcement is required can be performed without complicating the member management and reducing the productivity. The cost can be reduced by eliminating unnecessary work and members. Since the reinforcing metal member 13 is adapted to be joined to the inner surface of the flange of the beams 4 and 5 and the inner surface of the web, it can be firmly attached and the size between the upper and lower flanges 4a, 4b, 5a and 5b of the beams 4 and 5 can be increased. The same joining hardware 13 can be used to deal with tolerances and beam differences. Further, since the joining work of the reinforcing hardware 13 also serves as the joining work of the bracing reinforcement frames 2 and 2A and the stud 18, the working man-hour can be reduced accordingly. Furthermore, the beams 4,
No. 5 can be completely weldless by combining the structure in which the column 3 is bolted and the reinforcing metal 13 is bolted, and the unit box 1 can be welded to a higher degree to improve productivity. It is possible to improve the reliability and the reliability.

[0016]

The beam reinforcing structure of the present invention can easily reinforce a steel beam without welding, and therefore, even when the mounting positions and types of the structural members joined to the beams are different, the member management becomes complicated and There is an effect that it is possible to reduce the cost by reducing unnecessary members and work by reinforcing only the portions that need to be reinforced without lowering the productivity. In addition, when applied to a unit box, a unit box having a solid structure can be easily manufactured. Further, according to the reinforcing metal member of the present invention, it can be easily attached to the beam, and the structure is simple, the manufacturing is easy, and the reinforcing member is strong.

[Brief description of drawings]

FIG. 1A is a front view of a main part of a beam reinforcing structure according to an embodiment of the present invention, and FIG. 1B is a longitudinal sectional view of the same.

FIG. 2 is a vertical sectional view showing another example of the beam reinforcing structure.

FIG. 3 is a perspective view of a reinforcing metal piece used for the beam reinforcing structure.

FIG. 4A is a perspective view of a unit box to which the same reinforcing structure is applied, and FIG. 4B is a main part front view showing a pillar-beam joint structure of the unit box.

FIG. 5A is a front view of the unit box, and FIG.
Is a side view of the same.

FIG. 6 (A) is a front view showing a state in which a reinforcing frame with braces is attached to the girder side of the unit box, (B).
[Fig. 4] is a side view showing a state in which a reinforcing frame with braces is attached to the rear side of the unit box.

FIG. 7A is a front view of a main part of a beam reinforcing structure according to another embodiment of the present invention, and FIG. 7B is a vertical sectional view of the same.

FIG. 8 is a perspective view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Unit box 2, 2A ... Reinforcement frame (structural member) with braces 4 ... Ceiling beam 4a, 4b ... Flange 4c ... Web 5 ... Floor beam 5a, 5b ... Flange 5c ... Web 11A, 11B ... Bolt (axial tightening Tool 13) Reinforcing hardware 14 ... Hardware main body 14a ... Standing piece 14b ... Horizontal piece 15 ... Reinforcing plate 16A, 16B ... Insertion hole 18 ... Stud (structural member)

Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI Technical indication location E04B 2/56 632 E04B 2/56 632J 632C 632B 651 651A 651L 652 652J E04C 3/06 E04C 3/06

Claims (4)

[Claims] 1. A beam reinforcing structure for reinforcing a structural member mounting portion of a steel frame beam, wherein a reinforcing metal object is provided which is in contact with an inner surface of a flange and an inner surface of a web at a position of mounting the structural member of the steel frame beam. A beam reinforcing structure in which the web of the beam is joined to the web of the beam by an axial fastening tool, and the reinforcing metal member is joined to the flange of the beam together with the structural member by the axial fastening tool. 2. The reinforcing metal member is a bent plate-shaped metal member main body bent in an L shape, and a pair of parallel reinforcing plates welded to the standing piece and the horizontal piece of the metal member main body at both side edges thereof. 2. The beam reinforcing structure according to claim 1, further comprising: an insertion hole for a shaft-shaped tightening tool in each of the upright piece and the horizontal piece of the metal body. 3. The steel frame beam is a ceiling beam or a floor beam of a unit box, the structural member is a reinforcing frame with braces interposed between the ceiling beam and the floor beam, and the structural member is attached to the steel frame beam. The beam reinforcing structure according to claim 1 or 2, wherein the positions are both ends of the reinforcing frame with braces. 4. A reinforcing metal object for reinforcing a structural member mounting position of a steel beam, comprising a bent plate-shaped metal object body bent in an L-shape, and a vertical piece and a lateral part of the metal object body at both side edges of the metal object. Consisting of a pair of parallel reinforcing plates welded to one piece, each of which has a through hole for a shaft-shaped fastener in the vertical piece and the horizontal piece of the metal body, the vertical piece on the web inner surface of the steel beam, Reinforcing metal parts whose horizontal pieces are attached to the inner surface of the flange of the steel frame beam with axial fasteners.