JPH07216987A - Diaphragmless joining device for square steel column and H-shaped steel beam - Google Patents

Abstract

(57) [Abstract] [Purpose] To increase the performance of the members that compose a structure by a simple and cost-effective means. [Structure] An L-shaped steel reinforcing member 2 is brought into contact with four corners on the outer surface of a rectangular steel tubular column 1, and the L-shaped steel reinforcing member 2 is abutted.
At both ends of the rectangular steel pipe column in the peripheral direction,
The flange 5 of the joint fitting 4 fixed to the end of the H-shaped steel beam 3 is fixed to the L-shaped steel reinforcing member 2 by the welding and fixed by the one-side bolt 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for firmly joining a square steel tube column and an H-shaped steel beam without using a diaphragm.

[0002]

2. Description of the Related Art Conventionally, as an apparatus for joining a square steel tube column and an H-shaped steel beam without using a diaphragm,
As shown in FIG. 16 and FIG. 17, the inner side plate 7 is brought into contact with the inner surface of the rectangular steel tube column 1, and the upper and lower horizontal flanges 13 of the H-shaped steel beam 3 are joined to each other by a joining metal fitting 4 made of a split tee.
The web 8 is fixed by a large number of bolts 11, the vertical flanges 5 of the joining metal fittings 4 are brought into contact with the flat plates 14 facing each other in the square steel pipe column 1, and the flat plates 14 of the square steel pipe column 1 and the vertical flanges 5 are formed. And a plurality of through holes are provided in each inner surface side plate 7, and the flat plate 14 of the rectangular steel pipe column 1, the vertical flange 5 of the joint fitting 4, and the inner surface side plate 7 are fastened and fixed by the one side bolt 6 inserted through each of the through holes. There is known a diaphragmless joining device for connecting the rectangular steel tube column and the H-shaped steel beam. (2) As shown in FIGS. 18 and 19, at the four corners of the inner surface of the rectangular steel pipe column 1, L-shaped reinforcing metal fittings 12 and rib plates extending in a direction traversing the corners of the rectangular steel pipe column 1. An inner corner reinforcing metal fitting 10 composed of 9 and 9 is fixed by welding or the like, and a web 8 of a joining metal fitting 4 composed of a split tee is attached to an end of each horizontal flange 13 of the H-shaped steel beam 3.
Are fixed by bolts 11, and the vertical flange 5 of the joining metal fitting 4 is brought into contact with the outer surface of the rectangular steel pipe pillar 1, and the transparent flanges provided on the rectangular steel pipe pillar 1, the vertical flange 5 and the L-shaped reinforcing metal fitting 12 are attached. A plurality of one-sided bolts 6 inserted through the holes allow the rectangular steel pipe column 1 and the vertical flanges 5 and L
A joining device in which the character-shaped reinforcing metal fitting 12 is tightly coupled is also known.

[0003]

SUMMARY OF THE INVENTION In the case of the conventional diaphragmless joining device for connecting a rectangular steel tubular column and an H-shaped steel beam,
When only the tensile load in the direction of the arrow shown in FIG. 14 acts on the rectangular steel pipe column 1, rotation occurs at the four corners of the rectangular steel pipe column 1, and
The deformed shape is 4. At the beam mounting position, the deformation due to such rotation (see the modified FIG. 15 as shown in the drawing) progresses, so that the rigidity of the panel zone may decrease.

[0004]

In order to advantageously solve the above-mentioned problems, in the diaphragmless joining apparatus of the rectangular steel pipe column and the H-shaped steel beam of the present invention, the four corners on the outer surface of the rectangular steel pipe column 1 are provided. The L-shaped steel reinforcing member 2 is brought into contact with the portion, and both ends of the L-shaped steel reinforcing member 2 in the circumferential direction of the rectangular steel pipe column are fixed to the rectangular steel pipe column 1 by welding to form an H-shaped steel beam. The vertical flange 5 of the joint fitting 4 fixed to the end of 3,
It abuts against the L-shaped steel reinforcing member 2 and is fixed by a one-side bolt 6. The above-mentioned problems can be advantageously solved also by filling the rectangular steel tube column 1 in the invention of claim 1 with concrete 19. Furthermore, the L-shaped steel reinforcing member 2 is fixed to the outer surface of the rectangular steel tube column 1 on the side where the beam is not mounted, and the steel is attached to the outer surface of the L-shaped steel reinforcing member 2 on the side where the beam is not mounted. The above-mentioned problems can be advantageously solved by fixing and reinforcing the reinforcing plate 20.

[0005]

1 to 3 show a diaphragmless joining apparatus for connecting a rectangular steel tube column and an H-shaped steel beam according to a first embodiment of the present invention, which is a square-shaped rectangular section. The L-shaped steel reinforcing member 2 is in contact with the four corners on the outer surface of the steel tubular column 1, and both ends of the L-shaped steel reinforcing member 2 in the circumferential direction of the rectangular steel tubular column are different from the rectangular steel tubular column 1. Welding 1
The upper and lower horizontal flanges 13 of the H-shaped steel beam 3 are abutted with the webs 8 of the joint fittings 4 made of split tees and fixed by a large number of bolts 11. 5 is abutted over one side 15 of the adjacent L-shaped steel reinforcing members 2, one side 15 with which the vertical flange 5 of each L-shaped steel reinforcing member 2 is abutted, and a flat plate overlaid on that side. 1
7 and the vertical flange 5 are provided with a plurality of through-holes for inserting the one-side bolts 6, and the one-side bolts 6 are inserted through these through-holes. And one side 15 of the L-shaped steel reinforcing member 2 and the vertical flange 5 are fastened and fixed.
The other side 16 of the L-shaped steel reinforcing member 2 that does not contact the vertical flange 5 and the flat plate 17 of the rectangular steel pipe column 1 are provided with through holes for inserting the one-side bolts 6, and the other side 16 And the flat plate 17 of the rectangular steel tube column 1 superposed on this
Multiple one side bolts 6 are inserted through
The other side 16 and the flat plate 17 superposed on the other side 16 are fastened and fixed by the one side bolt 6.

FIGS. 4 and 5 show a diaphragmless joining device for a rectangular steel pipe column and an H-shaped steel beam according to a second embodiment of the invention of claim 1, which is a square steel pipe column having a substantially square cross section. The L-shaped steel reinforcing member 2 is brought into contact with the four corners of the outer surface of 1 and fixed by welding 18, and the webs 8 of the joining metal fitting 4 are superposed on the upper and lower horizontal flanges 13 of the H-shaped steel beam 3. Then, the three H-shaped steel beams 3 fixed by a large number of bolts 11 and provided with the joining metal fittings 4 configured as described above are arranged so as to face the three flat plates 17 in the rectangular steel pipe column 1. The vertical flange 5 of the joining metal fitting 4, the one side of the L-shaped steel reinforcing member 2, and the flat plate 17 of the square steel pipe column 1 are fixed by one-side bolts 6, but other configurations are provided. Is similar to the case of the first embodiment of the invention of claim 1.

FIGS. 6 and 7 show a diaphragmless joining device for a square steel pipe column and an H-shaped steel beam according to a third embodiment of the invention of claim 1, which is a square steel pipe column having a substantially square cross section. The L-shaped steel reinforcing member 2 is brought into contact with the four corners of the outer surface of 1 and fixed by welding 18, and the webs 8 of the joining metal fitting 4 are superposed on the upper and lower horizontal flanges 13 of the H-shaped steel beam 3. The four H-shaped steel beams 3 that are fixed by a large number of bolts 11 and that are equipped with the joining metal fittings 4 configured as described above are arranged so as to face the four flat plates 17 in the rectangular steel pipe column 1. The vertical flange 5 of the joining metal fitting 4, the one side of the L-shaped steel reinforcing member 2, and the flat plate 17 of the square steel pipe column 1 are fixed by one-side bolts 6, but other configurations are provided. Is similar to the case of the first embodiment of the invention of claim 1.

FIG. 8 shows an embodiment of the invention of claim 2 in which the concrete 19 is filled inside the rectangular steel tube column 1, but the other construction is the same as that of the embodiment of the invention of claim 1. It is similar to the case. In the case of the invention of claim 2, since the rectangular steel tube column 1 is filled with the concrete 19, it is possible to prevent the deformation of the rectangular steel tube column 1, and therefore the performance of the members constituting the structure is improved. It can be significantly improved.

9 to 11 show the first aspect of the invention of claim 3.
It shows an embodiment, and the steel reinforcing plate 20 is provided on each side of the L-shaped steel reinforcing member 2 arranged on the outer surface of the two sides of the square steel tubular column 1 where the H-shaped steel beam 3 is not attached. Are polymerized and fixed by the one side bolt 6. Figure 1
2 and FIG. 13 show a second embodiment of the invention of claim 3, which is an L-shaped steel arranged on the outer surface of one side of the square steel tube column 1 to which the H-shaped steel beam 3 is not attached. A steel reinforcing plate 20 is superposed on each side of the steel reinforcing member 2 and is fixed by one-side bolts 6. As the one side bolt 6, the one described in JP-A-4-34151 is used.

[0010]

According to the present invention, the L-shaped steel reinforcing member 2 is brought into contact with the four corners of the outer surface of the rectangular steel tubular column 1, and the rectangular steel tubular column circumferential direction in the L-shaped steel reinforcing member 2 is abutted. Both end portions of the joining bracket 4 are fixed to the square steel tube column 1 by welding, and the vertical flanges 5 of the joining metal fittings 4 fixed to the end portions of the H-shaped steel beam 3 are brought into contact with the L-shaped steel reinforcing member 2, Since it is fixed by the one-side bolts 6, the rigidity of the L-shaped steel reinforcing member 2 fixed to the four corners of the outer surface of the square steel tubular column 1 by welding 18 can be expected, so that the four corners of the square steel tubular column 1 at the beam mounting position can be expected. Of the rectangular steel pipe column 1 is restrained from being deformed in the beam direction due to the rotation, so that the rectangular shape of the structure is less than that of the conventional diaphragmless joint. Prevents rotation at the four corners of the steel tube column 1. At the same time, it is possible to prevent the rigidity of the panel zone from decreasing, and it is possible to improve the performance of the members such as the square steel tube column 1 and the H-shaped steel beam 3 without causing a large increase in cost. Furthermore, the performance of the members constituting the structure can be improved by the simplest and most effective means. In addition, by filling the rectangular steel tube column 1 with concrete 19, the performance of the members constituting the structure can be significantly improved. Furthermore, the structure is configured by abutting and fixing a steel reinforcing plate 20 on one side of the left and right L-shaped steel reinforcing members 2 with which the side of the rectangular steel tube column 1 to which the beam is not attached is abutted. It is possible to remarkably improve the performance of the member.

[Brief description of drawings]

FIG. 1 is a cross-sectional plan view showing a diaphragmless joining device for connecting a rectangular steel tube column and an H-shaped steel beam according to a first embodiment of the present invention.

FIG. 2 is a side view of the diaphragmless joining device for connecting the rectangular steel tube column and the H-shaped steel beam shown in FIG.

FIG. 3 is a cross-sectional plan view showing a part of FIG. 1 in an enlarged manner.

FIG. 4 is a cross-sectional plan view showing a diaphragmless joining device for connecting a rectangular steel tube column and an H-shaped steel beam according to a second embodiment of the invention of claim 1;

5 is a vertical cross-sectional front view showing a diaphragmless joining device between the rectangular steel tube column and the H-shaped steel beam shown in FIG. 4. FIG.

FIG. 6 is a cross-sectional plan view showing a diaphragmless joining device for connecting a rectangular steel tube column and an H-shaped steel beam according to a third embodiment of the invention of claim 1;

FIG. 7 is a vertical cross-sectional side view showing a diaphragmless joining device for connecting a rectangular steel tube column and an H-shaped steel beam according to a third embodiment of the present invention.

FIG. 8 is a cross-sectional plan view showing a diaphragmless joining device of a rectangular steel tube column and an H-shaped steel beam according to the invention of claim 2;

FIG. 9 is a cross-sectional plan view showing a diaphragmless joining device for connecting a rectangular steel tube column and an H-shaped steel beam according to the first embodiment of the present invention.

FIG. 10 is a side view showing a diaphragmless joining device for connecting a rectangular steel pipe column and an H-shaped steel beam according to the first embodiment of the invention of claim 3;

FIG. 11 is a cross-sectional plan view showing a part of FIG. 9 in an enlarged manner.

FIG. 12 is a cross-sectional plan view showing a diaphragmless joining device for connecting a rectangular steel tube column and an H-shaped steel beam according to a second embodiment of the invention of claim 3;

FIG. 13 is a vertical cross-sectional front view showing a diaphragmless joining device for connecting a rectangular steel tube column and an H-shaped steel beam according to a second embodiment of the invention of claim 3;

FIG. 14 is a cross-sectional plan view showing a state in which a rectangular steel tube column is deformed by applying a tensile force to a pair of opposing sides of the rectangular steel tube column.

FIG. 15 is a cross-sectional plan view showing a state where a rectangular steel tube column is deformed by applying a tensile force to a pair of opposing sides of the rectangular steel tube column.

FIG. 16 is a cross-sectional plan view showing a diaphragmless joining device of a rectangular steel tube column and an H-shaped steel beam of a first conventional example.

FIG. 17 is a vertical cross-sectional side view showing a diaphragmless joining device between the rectangular steel tube column and the H-shaped steel beam shown in FIG. 16.

FIG. 18 is a cross-sectional plan view showing a diaphragmless joining device for connecting a rectangular steel tube column and an H-shaped steel beam of a second conventional example.

FIG. 19 is a side view showing a diaphragmless joining device between the rectangular steel tube column and the H-shaped steel beam shown in FIG. 18.

[Explanation of symbols]

 1 Rectangular Steel Tube Column 2 L-Shaped Steel Reinforcement Member 3 H-Shaped Steel Beam 4 Joining Metal Fitting 5 Vertical Flange 6 One Side Bolt 8 Weave 11 Bolt 12 L-Shaped Reinforcing Metal Fitting 13 Horizontal Flange 15 One Side 16 Other Side 17 Flat Plate 18 Welding 19 Concrete 20 Steel reinforcement plate

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Homura Shimura 20-1 Shintomi, Futtsu-shi, Chiba Nippon Steel Co., Ltd. Technology Development Division (72) Inventor Yoshimichi Hatta 2-6 Otemachi, Chiyoda-ku, Tokyo No. 3 Nippon Steel Corporation (72) Inventor Hitoshi Oki 20-1 Shintomi, Futtsu City, Chiba Nippon Steel Co., Ltd. Technology Development Division

Claims (3)

[Claims] 1. The four corners on the outer surface of the rectangular steel pipe column 1,
The L-shaped steel reinforcing member 2 is abutted, and both ends of the L-shaped steel reinforcing member 2 in the peripheral direction of the rectangular steel pipe column are fixed to the rectangular steel pipe column 1 by welding, and the end of the H-shaped steel beam 3 is attached. A diaphragmless joining device between a square steel pipe column and an H-shaped steel beam, in which a vertical flange 5 of a joining metal fitting 4 fixed to a portion is brought into contact with the L-shaped steel reinforcing member 2 and fixed by a one-side bolt 6. 2. A diaphragmless joining device for connecting a rectangular steel tube column and an H-shaped steel beam according to claim 1, wherein the rectangular steel tube column 1 is filled with concrete 19. 3. An L-shaped steel reinforcing member 2 is fixed to the outer surface of the rectangular steel tubular column 1 on which the beam is not mounted, and the L-shaped steel reinforcing member 2 has an outer surface on which the beam is not mounted.
A diaphragmless joining device for connecting a rectangular steel pipe column and an H-shaped steel beam according to claim 1, wherein the steel reinforcing plate 20 is fixed and reinforced.