JPH08302814A - Pillar for beam support - Google Patents

Abstract

PURPOSE: To improve bearing force of a pillar main body at a connecting part of a beam and the pillar main body and to improve supporting strength of the pillar main body. CONSTITUTION: A pillar material 3 for beam support is a pillar to connect a beam 4 by using a connecting bolt 30, constituted of a metallic square pipe made pillar main body 10 to support the beam material 4 and four sectionally L shaped members and furnished with reinforcing metallic materials 11 fastened by spot welding on four corner parts inside the pillar main body at connecting parts with the beam 4, and screw holes 21, 22 passing through the pillar main body 10 and the reinforcing metallic materials 11 are formed near to the corner parts on the beam connecting parts of the pillar main body 10. The reinforcing metallic materials 11 are fastened by arc spot welding on the pillar main body 10 on arrangement lines of a plural number of the screw holes 21, 22 in the vertical direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a beam joining column, and more particularly to a beam joining column for joining beams with a plurality of bolts.

[0002]

2. Description of the Related Art There is a method of connecting a beam to a column body made of a metal square pipe such as a square steel pipe with a bolt. In this case, since the square steel pipe is usually thin, the proof strength of the bolt joint may be insufficient or the bolt joint may be deformed. As a conventional technique for solving this problem, there is a beam supporting column disclosed in Japanese Patent Laid-Open No. 61-225437. The beam supporting column includes a column main body made of a square steel pipe and a reinforcing metal member having an L-shaped cross section and arranged along the inner corner of the column main body. A through hole is formed through the pillar and the reinforcing metal article, and a nut is fixed to the inside of the reinforcing metal article by welding or adhesion in accordance with the through hole.

When the beam is joined to the beam supporting column with bolts, the end of the beam is butted against the side face of the column, the bolt is inserted into the through hole of the column body from the butted beam, and the inserted bolt is used as a reinforcing metal object. The beam and the column main body are firmly fastened by being screwed into a nut fixed to the.

[0004]

SUMMARY OF THE INVENTION In the above conventional configuration,
Since the reinforcing metal fittings are arranged at the four corners inside the column main body of the beam joint, the yield strength is improved as compared with the case where the reinforcing metal fittings are not arranged. However, since the reinforcement hardware is only fixed to the column main body with the bolts for joining the beams, the strength of the column main body at the joint between the beam and the column main body is There is a problem that does not improve. In addition, since the female screw portion for screwing the bolt for beam connection is the nut arranged inside the reinforcing metal object, the nuts arranged so as to sandwich the corners on the adjacent side surfaces of the pillar main body face each other. The bolt insertion position cannot be moved closer to each corner than the position. That is,
In this prior art, the beam and the column can be joined only near the center of the column body, not near the corners. In a column body made of a metal square pipe, the beam supporting strength at each corner is larger than the beam supporting strength at each side surface central portion, but this characteristic cannot be utilized in this prior art.

An object of the present invention is to provide a beam supporting column which can improve the yield strength of the column main body at the joint portion between the beam and the column main body and the supporting strength of the column main body.

[0006]

A beam supporting column according to the present invention is a column for joining beams using bolts, and a column main body made of a metal square pipe for supporting the beam and an L-shaped cross section. And a reinforcing metal member fixed to each of the four corners inside the column main body by welding at a joint portion with the beam, and the beam main body and the reinforcing metal member penetrate through the beam joint portion of the column main body. Is formed, and at least the portion of the reinforcing metal object is a screw hole into which the bolt is screwed.

A plurality of bolt holes are formed in the vertical direction of the column main body at the beam joint, and the reinforcing metal member is fixed to the column main body by spot welding, and the spot welding position is arranged on the vertical arrangement line of the plurality of bolt holes. Is preferred.

[0008]

In the beam supporting column according to the present invention, when the beam is joined to the column, the end of the beam is butted against the side face of the column body, and the bolt is inserted into the bolt hole from the beam side in the butted state. .
Then, the bolt and the pillar are joined by screwing the bolt into the screw hole formed in at least the portion of the bolt hole.
Here, since the reinforcing metal member is fixed to the four corners inside the beam main body by welding, the yield strength of the column main body is improved in a well-balanced manner at the joint between the column and the beam. Further, since the screw hole is formed at least in the portion of the reinforcing metal object of the bolt hole, the screw connection can be performed without using the nut. For this reason, if bolt holes are formed near the corners of the pillar body, bolt connection can be performed near the corners, and fixing can be performed near the point where the pillar body has the highest support strength.

A plurality of bolt holes are formed in the beam joint in the vertical direction of the column body, the reinforcing metal is fixed to the column body by spot welding, and the spot welding positions are arranged on the vertical arrangement lines of the plurality of bolt holes. In this case, since the welding position and the bolt joining position are aligned, the integrity of the reinforcing metal member and the column main body at the joining part is enhanced, and the yield strength at the joining part is further improved.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a steel frame structure of a prefabricated house adopting one embodiment of the present invention. The steel frame structure 1 has a column member 3 vertically erected on a cloth foundation 2 and upper and lower beam members 4 and 5 connecting the column members 3. Beam material 4
Is for the ceiling on the second floor, and the beam 5 is for the ceiling on the first floor and the floor on the second floor.

The column member 3 is fixed to the foundation metal 7 that is fastened to the cloth foundation 2 by the foundation bolt 6 by the fastening bolt 8. As shown in FIGS. 2 and 3, the pillar member 3 is fixed to the prismatic pillar main body 10, the reinforcing metal member 11 fixed to the inside of the beam members 4 and 5 joints of the pillar main body 10, and the top portion of the pillar main body 10. And the top plate 12 is formed. The pillar body 10 is, for example, 8
It is made of a 0 × 80 × 3.2 rectangular steel pipe, and two rows of screw holes 21 are vertically spaced apart from each other on the outer peripheral surface 4 of the beam-joining portion. The two rows of screw holes 21 are formed near the corners on the outer peripheral surface of the column body.

As shown in FIGS. 2 and 4, the reinforcing metal member 11 is a mountain-shaped member having an L-shaped cross section and is, for example, 35 × 35.
The size is × 8. The reinforcing metal member 11 is fixed to the four corners of the joint portion of the beam members 4 and 5 on the inner surface of the column body 10 by, for example, arc spot welding. This reinforcement hardware 11
Is manufactured by rolling, for example, 70 × 8 flat steel. The reinforcing metal 11 has a plurality of screw holes 2 continuous with the screw holes 21.
2 is formed. The dimensions of the screw holes 21 and 22 are, for example, M14. As shown by the crosses in FIG. 1 and FIG. 3, the welding position 23 of the reinforcing metal member 11 has screw holes 21, 22.
On the array line. By welding on the line of arrangement of the screw holes 21 and 22 in this way, the bolt joint and the weld are arranged vertically when the beam members 4 and 5 are joined, so that the reinforcing member 11 and the column main body 10 are The unity is improved, and the proof stress at the joint is improved.

The beam member 4 is, for example, 320 × 80 × 3.2.
The beam main body 24 made of lightweight H-section steel and the seat plates 25 fixed to both ends of the beam main body 24 by welding. Seat plate 25
Four through-holes 26 are formed in the upper and lower parts and at the left and right parts at intervals. The through holes 26 are arranged at positions facing any of the screw holes 21 and 22 formed in the pillar member 3, and have a vertical interval of 280 mm, for example. The pillar member 3 and the beam member 4 are joined by inserting the joining bolt 30 into the screw holes 21 and 22 via the spring washer 31 through the through hole 26.

The beam members 5 are arranged vertically at intervals, for example, 80 × 40 × 2.
3, a pair of beam main bodies 34, 35 made of lightweight channel steel, a seat plate 36 and a reinforcing plate 37 connecting the beam main bodies 34, 35 at their ends, and the beam main body 3
Zigzag connecting 4,35 in the middle, eg 75 ×
It is mainly composed of a connecting member 38 made of 35 × 2.3 lightweight channel steel. A through hole (not shown) is formed in the seat plate 36 at a position facing the screw hole 21, and the joining bolt 30 is similarly inserted into the through hole to join the beam 5 and the column main body 3 to each other. Has been done. A reinforcing metal piece 11 having a predetermined length is also fixed to the inside of the column main body 10 at the joint portion of the beam member 5.

When manufacturing the steel frame structure 1, first, various steel materials such as square steel pipes, H-shaped steels, grooved steels and the like to be columns and beams are prepared and cut into predetermined dimensions. Then, the pillar 3 is manufactured from a rectangular steel pipe cut into a predetermined size. When manufacturing the pillar material 3, the pillar body 10 made of a rectangular steel pipe is used.
Reinforcing metal parts 11 made of angle steel are arranged at the beam joints at the four inner corners of the above, and they are fixed at welding positions 23 by arc spot welding. Then, after welding the top plate 12, the screw hole 2
Screw holes 21 and 22 are formed by forming pilot holes for 1 and 22 and tapping the pilot holes. Then, another process is performed to complete the pillar material 3. The screw holes 21 and 21
In order to standardize the pillar material 3 for prefabricated houses,
There are many holes other than those actually used. The beam members 4 and 5 are manufactured by welding a seat plate and a reinforcing plate to H-section steel, channel steel, etc., and finally forming a through hole. In addition, the base metal 7 is also manufactured separately.

When assembling the steel frame structure 1 using the pillar 3 and the beams 4 and 5 thus manufactured, first, the foundation metal 7 is erected on the pillar 3 on the cloth foundation 2. It is placed in the installation position and fastened to the cloth foundation 2 with the foundation bolt 6. Then, the pillar member 3 is fastened to the base metal 7 by the fastening bolt 8. When all the pillar members are fastened to the base metal 7, subsequently, the beam members 4 and 5 are joined to the pillar member 3 by the joining bolts 30.
Alternatively, some of the beam members may be first joined to the column member 3 and then the column member 3 may be joined to the base metal 7.

At this time, since the reinforcing metal member 11 having an L-shaped cross section is fixed to the column body 10 by welding, the proof stress at the joint can be improved. Further, since the screw holes 21 and 22 are formed continuously through the pillar main body 10 and the reinforcing metal member 11, the positions of the screw holes 21 and 22 are set to the pillar main body 1.
Can be placed in the corner of 0. For this reason, since the interval between the joining bolts 30 is wide and the pillar main body 10 can be joined at a corner where the support strength is high, it is possible to improve the degree of fixing of the joint portion and the support strength of the pillar main body 10. Further, since the reinforcing metal member 11 and the pillar main body 10 are joined by spot welding, and the welding position 23 is on the alignment line of the fastening bolts 30 in the vertical direction, the integrity of the pillar main body 10 and the reinforcing metal member 11 is improved. Even if a force is applied to the column member 3 via the beam members 4 and 5, the welding position 23 is arranged on the line of action of the force, and the yield strength of the joint is further improved.

[Other Embodiments] (a) The column body 10 may be welded with the flange portions of channel steel facing each other instead of the rectangular steel pipe. (B) In the present embodiment, the screw holes 21,
Although 22 is provided on the entire outer peripheral surface of the column main body 10, it is not necessary to provide it, and it suffices if it is provided only at the beam joint portion. (C) Instead of the screw hole 21, a through hole larger than the diameter of the joining bolt may be formed in the column body 10.

[0019]

In the beam supporting column according to the present invention, the reinforcing metal members are fixed to the four corners inside the beam main body by welding, so that the proof stress of the column main body is improved at the joint between the column and the beam in a well-balanced manner. To do. Further, since the screw hole is formed in at least the portion of the reinforcing metal object of the bolt hole, screw connection can be performed without using a nut. For this reason, if bolt holes are formed near the corners of the pillar body, the bolts can be joined near the corners by bolt connection.
Fixing is possible near the point where the column body has the highest support strength.

A plurality of bolt holes are formed in the beam joint in the vertical direction of the column main body, the reinforcing metal member is fixed to the column main body by spot welding, and the spot welding position is arranged on the vertical arrangement line of the plurality of bolt holes. In this case, since the welding position and the bolt joining position are aligned, the integrity of the reinforcing metal member and the column main body at the joining part is enhanced, and the yield strength at the joining part is further improved.

[Brief description of drawings]

FIG. 1 is a partial side view of a steel frame structure adopting an embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along the line II-II of FIG.

FIG. 3 is a vertical cross-sectional view of the column main body according to III-III in FIG.

FIG. 4 is a perspective view of a reinforcing metal object.

[Explanation of symbols]

 1 Steel frame structure 3 Column material 4 Beam material 10 Column body 11 Reinforcing hardware 21, 22 Screw hole 23 Welding position 30 Joining bolt

Claims (2)

[Claims] 1. A beam supporting column for joining beams using bolts, comprising a column main body made of a metal square pipe for supporting the beam, and four members having an L-shaped cross section. And a reinforcing metal member fixed by welding to the four corners inside the pillar main body at a joint portion of the column main body, and a bolt hole penetrating the pillar main body and the reinforcing metal member is formed in the beam joint portion of the column main body. The pillar for beam support is characterized in that the bolt hole is a screw hole in which at least a portion of the reinforcing metal object is screwed into the bolt. 2. A plurality of the bolt holes are formed in a longitudinal direction of the column main body at the beam joint portion, the reinforcing metal is fixed to the column main body by spot welding, and the spot welding positions are the positions of the plurality of bolt holes. The beam supporting column according to claim 1, wherein the column is arranged on a vertical array line.