JPH06117019A - Construction method for locating and connecting steel beam - Google Patents

Abstract

PURPOSE:To provide a construction method by which steel beams can be simply and temporarily connected to each other by few operators in one touch manner to improve safety correspondingly and provide high strength and accuracy in the temporary connection. CONSTITUTION:An end of a bracket 2 for beam is cut off on the upper portions of an upper flange 2a and web 2c and an end of a steel beam 1 is cut off correspondingly on the lower portions of a lower flange 1b and web 1c. An inverted L-shaped connecting fitting 7 formed in the upper end with an outward horizontal plate 7b folded to put therebetween the upper flange 2a and the lower portion of the web 2c in the remainder of the cut-off upper portion of the web 2c is mounted opposedly on the bracket 2 for the beam. The lower flange 1b of the steel beam 1 and the upper portion of the web 1c in the remainder of the cut-off lower portion of the web 1c are inserted into inserting grooves 8 formed between these connecting fittings 7, and the upper flange 1a is overlaid on the outward horizontal plate 7b to connect the steel beam 1 to the bracket 2 for the beam.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of positioning and connecting a beam steel frame for joining a beam steel frame to a column steel frame in a steel structure construction.

[0002]

2. Description of the Related Art In a beam steel frame, as shown in FIG. 5, 2 is a beam bracket on the side of a column, and the beam steel frame 1 to be joined to this is a splice which abuts the ends of the beam bracket 2 on both ends. The plate 3 is bolted or welded. In the case of fixing with the splice plate 3, bolt insertion holes are provided in the flanges of the splice plate 3, the beam steel frame 1 and the beam bracket 2, and bolts and nuts are fastened with high-strength bolts 4 through the bolt insertion holes. To do. Reference numeral 5 in the drawing denotes a gusset plate that joins the webs together.

Beam bracket 2 attached to a pillar in this way
In order to join the beam steel frame 1 to the, the beam steel frame 1 is hung by a crane or the like, and the ends of the beams are butted against each other.
For the alignment, the bolt insertion holes of the high-strength bolts 4 are used to manually align the holes, and the temporary bolts are inserted for positioning.

[0004]

In the above-described alignment in which the temporary holes are inserted by manually aligning the holes using the bolt insertion holes as described above, an operator must intervene at the joining point when suspending the beam steel frame. At least one signal man for the crane operator and one each on the left and right joints.
A total of three workers are required, and this work is performed at a high place, which is dangerous.

The object of the present invention is to eliminate the disadvantages of the above-mentioned conventional example, to make it possible to easily carry out with a small number of workers, to improve the safety, and to obtain a beam with high joint strength and precision. It is to provide a method for positioning and connecting a steel frame.

[0006]

In order to achieve the above-mentioned object, the present invention achieves the above object by notching the upper end of the beam bracket and the upper part of the web, and the end of the beam steel frame to the lower flange and the lower part of the web. The beam bracket has an inverted L-shaped connecting metal object formed by bending an outward horizontal plate at the upper end so as to sandwich the upper flange and the lower part of the remaining web on the upper side of the web. And insert the lower flange of the beam steel frame and the upper part of the remaining web notched on the lower part of the web into the insertion groove formed between these connecting hardware,
In addition, the upper flange is superposed on the outward horizontal plate to connect the beam steel frame to the beam bracket, and the inverted L-shaped connection metal fitting has a bent corner portion of the outward horizontal plate formed as an inclined surface. The main point is to do.

[0007]

According to the present invention as set forth in claim 1, the connecting hardware is first attached to the end of the beam bracket, and the web of the beam steel frame is automatically inserted into the insertion groove formed by the connecting hardware. The steel frames can be aligned with each other.

According to the second aspect of the present invention, in addition to the above action, when the web of the beam steel frame is inserted into the insertion groove, the diameter expansion inlet is formed at the upper end by the inclined surface. This serves as a guide to facilitate insertion.

[0009]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a side view showing an embodiment of a beam steel frame positioning and connecting method according to the present invention, and FIG. 2 is a side view after the same as above.

In the figure, 1 is a beam steel frame, and 2 is a beam bracket on the side of the column 6.

The end of the beam bracket 2 has an upper flange 2
a and the upper part of the web 2c are notched, while the end of the beam steel frame 1 is cut out so that the lower flange 1b and the lower part of the web 1c are notched in line with the end of the beam bracket 2.

At the end of the beam bracket 2,
The connection metal fittings 7 are attached so as to face each other so as to sandwich the upper flange and the lower portion of the remaining web 2c, which is formed by notching the upper portion of the web. The connection metal piece 7 is an inverted L-shaped metal piece formed by bending an outward horizontal plate 7b at the upper end of a vertical plate 7a. The vertical plate 7a has a top flange and a remaining web 2c which is formed by notching the upper part of the web. It is superposed on the outer surface and fastened with high-strength bolts 4. In this case, the outward horizontal plate 7b is brought into contact with the upper flange 2a, and these are also fastened with the high-strength bolt 4.

In this way, an insertion groove 8 is formed between the connecting metal parts 7 just in the notch of the upper flange of the beam bracket 2 and the upper part of the web.

In the inverted L-shaped connecting hardware 7, the bent corner portion of the upper end of the vertical plate 7a forming the outward horizontal plate 7b is formed as the inclined surface 9, and the inclined surface 9 is the above-mentioned portion. It constitutes an enlarged diameter inlet of the insertion groove 8.

In order to join the beam steel frame 1 to the beam bracket 2 to which the connection metal fitting 7 is attached, the lower flange 1b at the end of the beam steel frame 1 and the remaining web 1c of the lower part of the web 1c are cut away. Insert the upper part into the insertion groove 8, and
The upper flange 1a of the beam steel frame 1 is superposed on the outward facing horizontal plate 7b so that the vertical plate 7a of the connecting metal piece 7 and the upper part of the web 1c, and the horizontal plate 7b and the upper flange 1a are joined together by the high-strength bolt 4a. Conclude with.

When the web 1c is inserted into the insertion groove 8, since the enlarged diameter inlet is formed at the upper end by the inclined surface 9, this serves as a guide and is easy to insert.
Further, since the beam steel frame 1 is supported by the connection hardware 7 before being fastened with the high-strength bolt 4, the bolt tightening work can be performed in a stable state.

Finally, the lower flange 2 of the beam bracket 2
b and the lower flange 1b of the beam steel frame 1 together with the gusset plate 5
Bolt through.

[0018]

As described above, according to the method of positioning and connecting the beam steel frame of the present invention, the temporary joining can be easily performed with one touch by a small number of workers, and the safety is improved correspondingly, and the joining strength is high. And the thing with high precision is obtained.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a method for positioning and connecting a beam steel frame of the present invention.

FIG. 2 is a side view after connection showing one embodiment of a beam steel positioning and connecting method of the present invention.

FIG. 3 is a perspective view on the side of a beam bracket showing an embodiment of a method for positioning and connecting a beam steel frame of the present invention.

FIG. 4 is a vertical cross-sectional front view showing an embodiment of a beam steel frame positioning and connecting method according to the present invention.

FIG. 5 is a side view showing a conventional example.

[Explanation of symbols]

 1 ... Beam steel 1a ... Upper flange 1b ... Lower flange 1c ... Web 2 ... Beam bracket 2a ... Upper flange 2b ... Lower flange 2c ... Web 3 ... Splice plate 4 ... High-strength bolt 5 ... Gusset plate 6 ... Pillar 7 ... Connection Hardware 7a ... Vertical plate 7b ... Horizontal plate 8 ... Insertion groove 9 ... Inclined surface

Claims (2)

[Claims] 1. An end of a beam bracket is cut out at an upper flange and an upper part of a web, and an end of a beam steel frame is cut out at a lower flange and a lower part of the web so that the beam bracket is cut off at an upper flange and a web. Attach the inverted L-shaped connecting hardware made by bending outward horizontal plates at the upper end so as to sandwich the lower part of the remaining web with the upper part notched, and insert it into the insertion groove formed between these connecting hardware. Inserting the lower flange of the steel frame and the upper part of the remaining web notched at the lower part of the web, and connecting the beam steel frame to the beam bracket by superimposing the upper flange on the outward horizontal plate Beam steel frame positioning and connection method. 2. The method for positioning and connecting a beam steel frame according to claim 1, wherein the inverted L-shaped connecting metal article has a bent corner portion of the outward horizontal plate formed as an inclined surface.