JPH07331750A - Steel beam fitting joint - Google Patents

Abstract

PURPOSE:To facilitate the installation adjustment of a steel beam to a fitted member and enable easy jointing. CONSTITUTION:Either one of the gusset plate 2 of a fitted member 1 and the web 7 of a steel beam 6 is provided with an engaging protruding part 3, and the other is provided with a hole part 8 that can be engaged/disengaged with/ from the engaging protruding part 3 when the steel beam 6 is above the fitting position in relation to the gusset plate 2, whereas the engaging protruding part 3 in the engaged state is put out of disengagement when the steel beam 6 is in the fitting position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting joint used when fixing a steel beam such as a steel beam to a member to be attached such as a steel beam.

[0002]

2. Description of the Related Art Conventionally, when joining a steel frame girder to a steel frame girder, generally, a gusset plate fixed to a side portion of the steel girder and an end portion of the web of the steel frame girder are communicated with each other. The steel frame girder and the steel beam girder are joined by forming a bolt hole and mounting a nut on the bolt inserted through the bolt hole and tightening the nuts.

[0003]

However, in the above-mentioned conventional joint structure of the steel frame girder and the steel frame girder, when the steel frame girder is hung and installed at the site, the bolt hole of the gusset plate is installed. There is a problem in that much time and labor are required to match the bolt holes.
In addition, even after the bolts have been inserted into the respective bolt holes, there is a drawback that it takes a lot of time to tighten the bolts and the nuts.

The present invention has been made to solve the problems of the above-described conventional structure for mounting a steel frame beam, and the installation and adjustment of the steel frame beam with respect to the member to be mounted is easy and the steel frame beam can be easily joined. The purpose of the present invention is to provide a mounting joint.

[0005]

In order to achieve the above-mentioned object, the mounting joint of the steel beam of the present invention has an engaging projection on either the gusset plate of the member to be mounted or the web of the steel beam. On the other hand, when the steel beam is above the gusset plate above its mounting position, it is engageable with and disengageable from the engaging projection, and is engaged at the mounting position. The protrusion is provided with a hole that cannot be disengaged from the engaged state.

Here, for example, the engaging protrusion is a bolt that is erected on the gusset plate with the head positioned on the tip side, and the hole is the end of the web of the steel frame beam. Is a hole having a triangular shape, which is formed at the lower part thereof and through which the head of the bolt can be inserted, and at the upper part of which the head of the bolt cannot be inserted.

[0007]

According to the mounting joint of the steel frame beam of the present invention, when the steel frame beam is mounted on the member to be mounted, the steel frame beam is installed above the mounting position and the gusset plate and the steel frame beam of the member to be mounted are mounted. An engaging protrusion such as a bolt provided on one of the webs is engaged with a hole having a triangular shape or the like formed in the other, and then the steel beam is attached to its mounting position. By lowering,
The steel beam can be easily joined to the member to be attached.

[0008]

1 to 3 show an embodiment in which the mounting joint of a steel frame beam of the present invention is applied to a joint portion between a steel frame large beam and a steel frame small beam. In FIG. 1, reference numeral 1 in the figure indicates the steel frame girder (attached member).
The gusset plate 2 is integrally joined and fixed to a predetermined portion of the side portion of the plate to which the steel beam is to be attached. And
Bolts 3 (engagement protrusions) are provided upright on the side ends of the gusset plate 2 extending from the steel frame girder 1. Here, the bolt 3 is integrally fixed to the gusset plate 2 by welding, with the head portion 4 of the bolt 3 positioned on the tip end side, and the base end portion of the shaft portion 5 being welded. On the other hand, reference numeral 6 in the drawing indicates a steel beam (steel beam) which is joined to the steel beam 1 and has a hole 8 at the end of the web 7. The hole 8 has a triangular shape in which the top 8a is located on the upper side of the web 7 and the bottom is located on the lower side, and the head 8 of the bolt 3 can be inserted into the bottom portion 8b. Is formed. Further, the top portion 8a of the hole portion 8 is rounded to have a diameter substantially the same as the diameter of the shaft portion 5 of the bolt 3.

Next, a method of joining the steel beam 6 to the steel beam mounting terminal having the above construction will be described with reference to FIGS. First, the steel beam 6 is suspended by a lifting means such as a crane, and its end is moved to a desired position on the gusset plate 2 of the steel beam 1, as shown in FIG. Then, as shown in FIG. 2, the steel beam 6 is positioned slightly above the regular mounting position, and the hole 8
In the bottom part 8b of the gusset plate 2 side bolt 3
Insert the head 4 of the. Then, as shown in FIG. 3, the steel beam 6 is lowered to its mounting position.
Then, the shaft portion 5 of the bolt 3 relatively moves up inside the hole portion 8 while being guided by the two sides of the hole portion 8 that sandwich the top portion 8 and contacts the top portion 8a. As a result, the head 4 of the bolt 3
Cannot be detached from the hole portion 8, so that the steel beam 6 is joined to the steel beam 1. Then, after joining all the steel frame small beams 6 to the steel frame large beam 1, a floor slab C is placed on the upper surface thereof.

As described above, according to the attachment point of the steel beam, when the steel beam 6 is installed on the steel beam 1, the steel beam 6 is slightly above the attachment position.
The head 4 of the bolt 3 provided on the steel frame girder is engaged with the bottom portion 8b of the triangular hole 8 having an opening area wider than that of the conventional bolt hole, and then the steel beam 6 is directly attached to the mounting position. Since the steel beam 6 can be joined to the steel beam 1 by lowering it, the steel beam 6
Is extremely easy to install and adjust, and even after joining, there is no need to tighten bolts and nuts unlike the conventional ones.

In addition, since the top 8a of the hole 8 is rounded to have a diameter substantially the same as the diameter of the shaft 5 of the bolt 3, the shaft 5 of the bolt 3 and the hole 8 are formed. In the meantime, a contact area similar to that when a bolt is inserted into a conventional bolt hole can be obtained.

[0012]

Other Embodiments In the above embodiment, the bolt 3
Although the case where the hole to be engaged with is the hole 8 having a triangular shape has been described, the hole having any other shape can be applied. That is, as shown in FIG. 4, a circular portion 10a having a size through which the head 4 of the bolt 3 can be inserted is provided below the web 7 of the steel beam 6 and the circular portion 10a.
From the top to the top, a hole 10 having a groove 10b having a diameter slightly larger than the shaft 5 of the bolt 3 and the head 4 being non-removable, or a web 7 as shown in FIG.
Has a circular portion 11a having a size through which the head 4 of the bolt 3 can be inserted, and has a circular portion 11b having a smaller diameter than the head 4 above the circular portion 11a. The shaft portion 5 of the bolt 3 communicates with the portions 11a and 11b.
Keyhole-shaped hole 1 having a slightly larger diameter groove 11c
Even if it is 1, it is possible to obtain the same effect as that of the above embodiment.

In each of the above embodiments, the gusset plate 2 side is provided with a bolt (engagement protrusion) 3 and the steel beam 6 is provided with holes 8, 10 and 11 on the web 7 side. However, conversely, the engaging protrusion may be provided on the web side and the hole that engages with the gusset plate may be provided on the gusset plate side.

Further, in the above-mentioned embodiment, an example in which the attachment terminal of the steel frame beam of the present invention is applied to the joint portion between the steel frame large beam and the steel frame small beam has been described, but the present invention is not limited to this, and a member to be attached may be used. Even when the steel beam is installed on a certain column, the same effect can be obtained.

Further, the engaging projection and the hole are not limited to one place, but may be provided at a plurality of places in the vertical direction or the horizontal direction of the web depending on the size of the member to be attached and the steel beam. It is possible.

[0016]

As described above, the mounting joint of the steel beam of the present invention is provided with the engaging projection on one of the gusset plate of the member to be mounted and the web of the steel beam, and the other of the two. , Engaging with the engaging projection when the steel beam is above the gusset plate from its mounting position.
Since the engaging projection is provided with a hole that is not detachable when it is in the mounting position, the steel beam is installed when the steel beam is mounted on the mounted member. Slightly above the mounting position, engaging protrusions such as bolts provided on either one of the gusset plate of the mounted member and the web of the steel frame are formed into a triangular shape or the like provided on the other. Engage with the hole you have,
Then, by lowering the steel beam to its attachment position, the steel beam can be joined to the member to be attached, so that the installation adjustment of the steel beam is extremely easy, and even after joining, the conventional It is possible to obtain an effect that it does not require the trouble of tightening the bolt and the nut like a thing.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a steel frame attachment port of the present invention.

FIG. 2 is a longitudinal sectional view showing a state immediately before joining the steel beam to the steel beam in FIG.

FIG. 3 is a vertical cross-sectional view showing a state after the steel frame small beam of FIG. 1 is joined to the steel frame large beam.

FIG. 4 is a diagram showing another example of the shape of the hole in the attachment port of the steel beam of the present invention.

FIG. 5 is a view showing another example of the shape of the hole in the attachment port of the steel beam of the present invention.

[Explanation of symbols]

 1 Steel frame girder (attached member) 2 Gusset plate 3 Bolt (engagement protrusion) 4 Head 6 Steel beam girder (steel beam) 7 Web 8, 10, 11 Hole 8a Top 8b Bottom part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mark Renchener 1-25-1 Nishishinjuku, Shinjuku-ku, Tokyo Taisei Corporation

Claims (2)

[Claims] 1. A gusset plate of a member to be attached, which is a mounting joint for fixing a steel frame beam, wherein an engagement protrusion is provided on either one of the gusset plate and the web of the steel frame beam. On the other hand, when the steel beam is above the mounting position with respect to the gusset plate, it can be engaged with and disengaged from the engaging projection, and when in the mounting position, it is in the engaged state. An attaching joint for a steel beam, wherein the engaging protrusion has a hole which cannot be removed. 2. The engaging protrusion is a bolt that is erected on the gusset plate with its head located on the tip side, and the hole is formed in the end of the web of the steel frame beam. 2. The steel beam according to claim 1, wherein the lower part of the steel beam has a triangular hole through which the head of the bolt can be inserted, and the upper part of the hole cannot penetrate the head of the bolt. Mounting connection.