JPH04281934A - Beam joining construction - Google Patents

Abstract

PURPOSE:To join easily a girder to a beam or each other without requiring welding work in a site. CONSTITUTION:In construction to join a girder 10 of H-section to a beam 20 of H-section, the girder 10 has holes 11A formed at specific intervals in the longitudinal direction of a web 11. The beam 20 has holes 21C formed in correspondence with the holes 11A of the web 11 on the front end section 21B of an extention 21A of a web 21 longer than a flange 22 thereof. The front end section 21B is bent and the web 11 of the girder 10 and the front end section 21B are tightened with tightening members 30 through their holes 11A and 21C. The front end section 21B of the web 21 in the beam 20 and the base end section 21D respectively have the holes 21C and 21E, and a plurality of beams 10 are tightened to each other with the tightening members 30 in each extention 21A.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a beam joining structure, and more particularly to a beam joining structure in which a steel frame is formed by joining a large beam and a small beam, or small beams to each other.

0002

2. Description of the Related Art A conventional joining structure between a large beam 10 and a small beam 20, which is made of H-shaped steel with flanges joined to the upper and lower sides of the web, is, for example, as shown in FIG. Vertically mounted bracket 13
The end of the web 21 at one end of the small beam 20 is brought into contact with the outer side of They were formed by passing bolts (not shown) through each of the plurality of holes 14A, 13A and 14A, 31C, and fastening nuts (not shown) to each bolt.

0003

However, in the conventional beam joining structure, the brackets 13 to be attached to the webs 11 of the main beams 10, the connection brackets 14 for connecting the main beams 10 and the small beams 20, etc. are prepared in advance at the factory. At the same time, the prefabricated bracket 13 is attached to the girder 10.
It is necessary to weld and attach it to each predetermined position of
It takes considerable effort to precisely weld such brackets in advance at predetermined positions in a factory in accordance with the design specifications of the building. Further, the work of welding the brackets to predetermined positions on-site is required to be avoided as much as possible from the viewpoint of fire risk and other reasons.

[0004] Accordingly, an object of the present invention is to provide a beam joining structure in which joining of a large beam and a small beam (large beam) or between small beams can be easily performed without requiring on-site welding work. It's about doing.

[0005]

[Means for Solving the Problems] The present invention provides a girder made of H-shaped steel having flanges joined to the upper and lower ends of the web, and flanges each connected to the upper and lower ends of the web having a width equal to or less than the width of the web of the girder. In a beam joint structure in which a steel frame is formed by joining small beams made of H-shaped steel, the large beam has holes formed at predetermined intervals in the longitudinal direction of the web; has a hole formed corresponding to the hole in the web of the girder at the tip of a web extension part that extends longer than the flange integrally with the web; A beam joining structure characterized in that the tip part is bent, and the web of the large beam and the tip part of the web extension part of the small beam are fastened by a fastening member through their respective holes. By providing this, the above purpose has been achieved.

Further, the present invention provides a beam joining structure in which a plurality of small beams made of H-shaped steel having flanges joined to the upper and lower sides of the web are joined to each other to form a steel frame frame, in which the small beams are connected to the web. It has holes formed at the tip and base ends of a web extending portion that extends longer than the flange, and the tip is bent, so that the small beams are connected to each other. The present invention also provides a beam joint structure characterized in that each web extension part is fastened by a fastening member through each hole.

[0007]

[Operation] According to the present invention, in the process of forming a steel frame, the plurality of holes formed in the tip of the web extension part of the small beam are brought into contact with the plurality of holes formed in the web of the large beam. After that, the large beam and the small beam can be joined by simply fastening the tip of the small beam to the web of the large beam using a fastening member through each hole.

Further, according to the present invention, the small beams can be joined to each other by the fastening member at each web extension portion.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained below based on the embodiments shown in FIGS. 1 to 6. In each figure, FIG. 1 is a perspective view showing one embodiment of the beam joint structure of the present invention, FIG. 2 is a perspective view showing the main part of the small beam of the beam joint structure shown in FIG. 1, and FIG. 4 to 6 are plan views showing other embodiments of the present invention, respectively.

The beam joint structure of this embodiment is preferably applied as a floor support structure, for example, and as shown in FIG. Similarly to the large beam 10, a small beam 20 made of H-shaped steel and having flanges 22, 22 connected to the upper and lower ends of a web 21, respectively, are joined to form a steel framework.

The girder 10 has holes 11A formed at predetermined intervals in the longitudinal direction of the web 11, two at the top and two at the bottom;
It has 11A. Further, as shown in FIG. 2, the small beam 20 has a web 21 extending longer than the upper and lower flanges 22, 22 to form a web extending portion 21A, and a tip portion 21B of the extending portion 21A. It is bent 90 degrees. The tip portion 21B has two holes 21C corresponding to the holes 11A and 11A in the web 11 of the girder 10.
, 21C are formed, respectively.

[0012] Also, the web extension portion 21A of the small beam 20
As shown in FIGS. 1 and 2, the tip portion 21 is bent.
B and a base end 21D formed between the ends of the flanges 22, 22, and the length of the base end 21D is formed to extend from the web 11 of the flange 12 of the girder 10. ing. Therefore, the small beam 20 is the main beam 1.
0, the web extension portion 2 of the small beam 20
1A fits into the lower surface of the flange 12 of the girder 10,
One end of the flange 22 is formed so as to come into contact with the side end of the flange 12 .

The hole 11A of the large beam 10, the web extension portion 21A of the web 21 of the small beam 20, the bending process thereof, and the holes 21C and 21C of the tip portion 21B are made in a beam member at a factory or the like. Manufactured and processed as and,
When joining the large beam 10 and the small beam 20 at the site,
After bringing the beam members processed in advance at a factory etc. to the site, the small beams 20 are inserted into the holes 11A, 11A of the large beam 10.
These both 10, so that the holes 21C, 21C of
After aligning the bolts 31 and passing the bolts 31 through the overlapping holes 11A and 21C in the aligned state, the nuts 3
2, the respective webs 11 and 21 are fastened to join these two webs 10 and 20 together. Also, if necessary, please refer to Figure 3.
As shown in , there is another small beam 20 on the opposite side of the large beam 10.
are joined in the same way.

Further, FIGS. 4 to 6 are views showing a state in which small beams 20 are joined together, showing other embodiments of the present invention, respectively.
Each of the small beams 20 used is configured in the same manner, except for the connection manner of each small beam 20. Note that the joint structure between the small beams 20 is preferably applied to, for example, an overhanging portion of a balcony or the like.

The beam joining structure shown in FIG. 4 is constructed by joining small beams 20, 20, 20 from three directions orthogonally to each other, as shown in FIG. That is, the tip portion 2 of the web extension portion 21A of each small beam 20 used in this embodiment
1B and the base end 21D, there are two holes 2 at the top and bottom, respectively.
1C, 21C and 21E, 21E are formed, and each tip 21B is configured to overlap with each other's base end 21D, and each hole 21C, 21C is configured to overlap with 21E, 21E.

Furthermore, in the beam joint structure shown in FIG. 5, the small beams 20, 20 are orthogonally crossed from two directions, and each of the small beams 20, 20 is connected to one side in the same way as the beam joint structure shown in FIG. The distal end portion 21B is configured to overlap with the other proximal end portion 21D, and the respective holes 21C and 21C are configured to overlap with 21E and 21E. However, in this embodiment, one of the small beams 2
If the tip end 21B of 0 and the base end 21D of the other small beam 20 are only fastened with bolts 31 and nuts 32, the connection and joint strength is weak, so the L-shaped connecting member 40 31, and is fastened with a nut 32 to ensure the joint strength.

In addition, in the beam joining structure shown in FIG. 6, the small beams 20, 20 are arranged so as to form a straight line from two directions, and the respective tips 21B, Each base end portion 21D is connected and joined by the connecting member 40.

In each of the embodiments shown in FIGS. 4 to 6, the same effects as in the embodiment shown in FIGS. 1 to 3 can be expected.

It should be noted that the present invention is not limited to the above-mentioned embodiments in any way, and the point is that the girder has holes formed at predetermined intervals in the longitudinal direction of its web, and The small beam has a hole formed corresponding to the hole in the web at the tip of a web extension part that extends longer than the flange integrally with the web, and the tip has a bent shape. The web of the large beam and the tip of the small beam may be fastened by a fastening member through each hole, and the small beam may connect the small beams to each other in their respective extensions. It is sufficient that the beams are fastened by fastening members through the respective holes in the installation part, and all such beam joint structures are included in the present invention. Furthermore, the joint structure between the large beam and the small beam can also be applied when the width of the web of the small beam is the same as the width of the web of the large beam. Also included is a joint structure between beams having the same web width.

[0020]

According to the beam joining structure of the present invention, it is possible to easily join a large beam and a small beam, or between small beams, without requiring on-site welding work.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing one embodiment of a beam joint structure of the present invention.

FIG. 2 is a perspective view showing a main part of a small beam of the beam joint structure shown in FIG. 1;

[Fig. 3] Fig. 3 is a perspective view showing a state in which the beam joint structure shown in Fig. 1 is formed.

FIG. 4 is a plan view showing another embodiment of the present invention.

FIG. 5 is a plan view showing still another embodiment of the present invention.

FIG. 6 is a plan view showing still another embodiment of the present invention.

FIG. 7 is a perspective view showing a conventional beam joint structure.

[Explanation of symbols]

10 Main beam 11 Web 11A hole 12 Flange 20 Small beam 21 Web 21A Web extension part 21B Tip 21C hole 21D Base end 30 Bolts, nuts (fastening members) 40 Connecting member

Claims (3)

[Claims] Claim 1: A large beam made of H-shaped steel with flanges joined to the upper and lower sides of the web, and a small beam made of H-shaped steel with flanges joined to the upper and lower parts of the web, each having a width less than the width of the web of the large beam. In a beam joint structure in which a steel frame is formed by joining together, the large beam has holes formed at predetermined intervals in the longitudinal direction of its web, and the small beams have holes formed integrally with the web. A hole corresponding to the hole in the web of the girder is formed at the tip of the web extending portion extending longer than the flange, and the tip of the web extending portion is bent. A beam joining structure characterized in that the web of the large beam and the tip of the web extension part of the small beam are fastened together by a fastening member through respective holes. [Claim 2] In a beam joint structure in which a plurality of small beams made of H-shaped steel with flanges joined to the upper and lower sides of the web are joined to each other to form a steel framework, the small beam is integrally formed with the web. A web extending portion extending longer than the flange has holes formed at the distal end and base end, respectively, and the distal end is bent, and the small beams are connected to each other by the respective webs. A beam joint structure characterized in that the extension portion is fastened by fastening members through respective holes. 3. The beam joining structure according to claim 2, wherein the respective web extending portions are connected by a connecting member.