JPH09273219A - Joint method for square steel pipe pillar and h-shaped steel beam - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a joint method of which processes are reduced and transport and mounting of a diaphragm can be facilitated. SOLUTION: A steel pillar 1 is cut off between upper and lower flanges 2a of steel beams 2 to be joined to the pillar, through holes 4 are formed in the vicinity of the places corresponding to the four flange faces, and bevels 5 are formed on the circumferential edges of the holes. Four diaphragm pieces which are cut off from a square plate smaller than the hollow hole area of the steel pipe pillar 1 along the diagonal lines so as to form right-angled triangles, formed with bevels 6 on the two sides pinching the right angle, and provided with nut parts 7 capable of projecting the extreme ends from the through holes 4 on the hypotenuse parts, are inserted into the steel pipe pillar 1 and the extreme end parts of the nut parts 7 are insertedly fitted into the through holes 4. Next the extreme end parts of the nut parts 7 of the diaphragm pieces 8 are welded 10 to the steel pipe pillar 1, and after welding 10 the adjoining parts of the mutual diaphragm pieces 8 and then to the steel pipe pillar 1, beam fitting members 13 are fitted to the nut parts 7 by means of bolts 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for joining a rectangular steel tube column and an H-shaped steel beam, and more particularly to a method for joining an inner diaphragm type rectangular steel tube column and an H-shaped steel beam.

[0002]

2. Description of the Related Art An inner diaphragm type square steel tube column and an H-shaped steel beam are usually joined to each other by an H
After cutting at the center between the upper and lower flanges of the section steel beam and inserting and fixing the diaphragm at the upper and lower flange corresponding locations of the H section steel beam in the square steel tube column, weld the cut sections of the square steel tube columns to each other. A method of welding a bracket to a required surface of a rectangular steel pipe column is adopted. However, in the usual method of joining an inner diaphragm type rectangular steel tube column and an H-shaped steel beam, since there are many welding points, the number of steps is increased and the bracket is transferred while being welded to the rectangular steel tube column. There is a trouble that becomes troublesome. Conventionally, in order to deal with such a problem, though it is a through diaphragm type, a square steel pipe column is inserted into a square steel pipe column with a H-shaped cross-section having a plurality of screw holes or nuts on its side surface, and then fixed. There is known a method of joining a rectangular steel tube column and an H-shaped steel beam, in which a T-shaped beam attachment portion is attached to the required outer surface of the H-shaped steel beam with a bolt screwed into the screw hole or the like (see Japanese Patent Laid-Open No. 57-68433). .

[0003]

However, in the conventional method of joining the rectangular steel tube column and the H-shaped steel beam, in the case where the diaphragm is inserted into the rectangular steel tube column by the through diaphragm type, the rectangular steel tube column is Although it is easily achieved by vertically dividing into two, there is a problem that it becomes difficult in the case of the inner diaphragm type. Therefore, an object of the present invention is to provide a method for joining an inner diaphragm type rectangular steel tube column and an H-shaped steel beam, which can reduce the number of steps and facilitate the transportation and the mounting of the diaphragm.

[0004]

In order to solve the above-mentioned problems, the first method of joining a rectangular steel tube column and an H-shaped steel beam according to the present invention is a method for joining a rectangular steel tube column to the upper and lower sides of an H-shaped steel beam. After cutting at the center between the flanges and forming a plurality of through holes in the vicinity of the above-mentioned upper and lower flange-corresponding portions on the four surfaces, and forming a groove on the peripheral edge of each through hole, the hole area of the rectangular steel pipe column It has a shape of an isosceles right triangle obtained by cutting a smaller rectangular plate along a diagonal line, forms a groove on two sides that sandwich a right angle, and makes it possible to project the tip from the through hole of the rectangular steel pipe column at the hypotenuse part. Insert a diaphragm piece consisting of a set of 4 pieces having a plurality of nuts into each rectangular steel tube column, insert the tip of the nut into the through hole, and then insert the tip of the nut of each diaphragm into a square shape. Welded to a steel pipe column and used each diaphragm Welding the cut portion of the RHS Column cross from the welding mutual adjacent positions, and wherein the mounting by a bolt to the beam attachment member to the nut portion of the required surface thereafter. Further, the second method of joining the rectangular steel tube column and the H-shaped steel beam is the same as the first method, except that the tip of the nut portion is fitted into the through hole before the tip portion of the nut portion is fitted with a ring-shaped back. It is characterized by fitting the money. It is preferable that the through-holes of the prismatic steel column are formed so as to sandwich the flange of the H-shaped steel beam in the vertical direction. Further, the through hole of the rectangular steel pipe column may be formed so as to cross the flange of the H-shaped steel beam vertically. On the other hand, it is preferable that the beam attachment member is formed in a T shape. Further, the beam attachment member may be formed in a plate shape.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are plan views of a column / beam joint portion according to an example of an embodiment of a method for joining a rectangular steel pipe column and an H-shaped steel beam according to the present invention, a half cross section taken along line II-II in FIG. It is a side view. In order to form this column / beam joint portion, first, the rectangular steel tube column 1 is cut at the center between the upper and lower flanges 2a of the H-shaped steel beam 2 joined thereto, and then one of the rectangular steel tube columns 1 is cut. While forming the groove 3 in the cut portion, four through holes 4 on each surface are formed at a location corresponding to the upper and lower flanges 2a on the four surfaces of the prismatic steel tubular column 1 so that the flange 2a is vertically sandwiched and the flange 2a. The groove 5 is formed so as to be separated from each other in the width direction, and the groove 5 is formed on the outer peripheral edge of each through hole 4.

[0006] Next, a rectangular plate, which is appropriately smaller than the hole area of the square steel tubular column 1 and whose corners are cut off, is cut along a diagonal line to form an isosceles right triangle, and a right angle is sandwiched 2
Diaphragm piece 8 consisting of a set of 4 pieces, which has a groove 6 on the side and has four nut parts 7 in the shape of a cylinder, the tip of which can project from the through hole 4 of the rectangular steel tube column 1 on the oblique side.
After fitting the ring-shaped backing metal 9 to the tip of each nut portion 7, after inserting into the prismatic steel tube column 1 and inserting the tip of the nut portion 7 into the through hole 4. , The tip portion of the nut portion 7 is welded 10 to the rectangular steel pipe column 1, and the adjacent portions of the respective diaphragm pieces 8 having the groove 6 are welded 11
Then, after that, the cut portions of the square steel pipe columns 1 are welded to each other 12
I do. The diaphragm piece 8 is formed by appropriately machining cast steel or a steel material, and at the time of welding 10 to the rectangular steel pipe column 1, a temporary fixing bolt (not shown) is screwed into the nut portion 7. By doing so, it is possible to easily adjust and temporarily fix. Further, the backing metal 9 can have a function as a spacer by adjusting the thickness of the steel pipes of the same series in view of the difference in plate thickness.

When the welding 10 of the diaphragm pieces 8 to each prismatic steel tube column 1, the welding 11 of the diaphragm pieces 8 and the welding 12 of the prismatic tube columns 1 to each other are completed, this is carried out together with the H-shaped steel beam 2 and the like. Transport to a place.
At the time of this transportation, the square steel tubular column 1 can be easily transported since the tip of the nut portion 7 of the diaphragm piece 8 is slightly protruding, unlike the ordinary one having a bracket. Next, at the construction site, a T-shaped beam attachment member (bracket) 13 is attached to the end surface of the nut portion 7 on the required surface (four surfaces in FIGS. 1 and 2) of the rectangular steel pipe column 1 with a headed bolt 14 and a washer 15. After mounting by the above, the H-shaped steel beam 2 is provided between the upper and lower beam mounting members 13.
Insert the end of each of the bolts 16 and washers 17
And the nut 18 for mounting. In FIG. 1, 19 is a backing metal for welding 12 the cut portions of the rectangular steel tube columns 1.

In the embodiment of the method for joining the rectangular steel pipe column 1 and the H-shaped steel beam 2 described above, the diaphragm has the nut portion 7 whose tip can be projected from the through hole 4 of the rectangular steel pipe column 1. And beam mounting member 1 for square steel pipe column 1
Since the bolt connection of 3 is possible, the mounting process of the beam mounting member can be significantly reduced and ensured, and the rectangular steel pipe column 1 can be transported without mounting the beam mounting member 13. That is, since the pillar / beam joint can be assembled on site, it can be easily transported. Further, since one diaphragm is composed of four diaphragm pieces 8, it can be easily attached to the square steel pipe column 1.

FIG. 3 is a half cross-sectional side view of a column / beam joint according to another example of the embodiment of the method for joining a rectangular steel pipe column and an H-shaped steel beam according to the present invention. In order to form the column / beam joint portion, first, as in the case of FIGS.
The upper and lower flanges 22a of the H-shaped steel beam 22 joined to the
After cutting in the middle of the space, a groove 23 is formed at the cut portion of one of the square steel pipe columns 21, while the square steel pipe columns 21
At the location corresponding to the upper and lower flanges 22a on the surface,
The two through holes 24 on each surface are formed so as to cross the flange 22a in the vertical direction and separated from each other in the width direction of the flange 22a, and the groove 25 is formed on the outer peripheral edge of each through hole 24.

Next, a rectangular plate, which is appropriately smaller than the hole area of the rectangular steel pipe column 21 and whose corners are cut off, is cut along a diagonal line to form an isosceles right triangle, and a groove is formed on two sides that sandwich the right angle. 26 is formed, and the rectangular steel pipe column 21 is formed on the hypotenuse part.
A diaphragm piece 28 consisting of a set of four pieces having two nut portions 27, each of which has a plate-like shape with its tip protruding from the through hole 24 and has screw holes provided on the top and bottom, is attached to the tip portion of each nut portion 27. After fitting the plate-shaped backing plate 29, the tip end of the nut portion 27 is inserted into the through hole 24 by inserting it into the double-sided steel pipe column 21, and then the tip portion of the nut part 27 is inserted into the square steel pipe column 21. Welding 30 to each other and welding 31 the adjacent portions of each diaphragm piece 28 having the groove 26 formed therein.
Then, after that, the cut portions of the rectangular steel pipe columns 21 are welded together 3
I will do 2. The diaphragm piece 28 is shown in FIGS.
The backing plate 29 may be formed similarly to that of FIG. 1 and temporarily fixed, and the backing plate 29 may have the same function as that of FIGS.

After the square steel tube column 21 is transported to the construction site together with the H-shaped steel beam 22 and the like in the above-mentioned state, a plate-shaped beam mounting member ( Bracket) 33 with double-screw bolts 34, washers 35 and nuts 36, and then the upper and lower beam mounting members 3
The flange 22 a of the H-shaped steel beam 22 is welded 37 to 3. In FIG. 3, reference numeral 38 is a backing metal for welding the cut portions of the rectangular steel tube columns 21, and 39 is a backing metal for welding the flange 22 a of the H-shaped steel beam 22 to the beam attachment member 33. In the embodiment of the method for joining the rectangular steel tube column 21 and the H-shaped steel beam 22 described above, substantially the same operational effects as in the case of the above-described embodiment can be obtained.

[0012]

As described above, according to the first method of joining a rectangular steel pipe column and an H-shaped steel beam of the present invention, the beam attachment member can be bolt-joined to the rectangular steel pipe column. The mounting process of the members can be remarkably reduced and can be ensured, and the column / beam joint can be assembled on site, so that it can be easily transported. Further, since one diaphragm is composed of four diaphragm pieces, it can be easily attached to the square steel pipe column. Further, according to the second method for joining the rectangular steel tube column and the H-shaped steel beam, in addition to the effect of the first method, the diaphragm piece can be reliably attached to the rectangular steel tube column while the backing metal The backing metal can function as a spacer by changing the thickness of the backing metal.

[Brief description of drawings]

FIG. 1 is a plan view of a column / beam joint according to an example of an embodiment of a method for joining a rectangular steel tube column and an H-shaped steel beam according to the present invention.

2 is a half sectional side view taken along line II-II in FIG.

FIG. 3 is a half cross-sectional side view of a column / beam joint according to another example of the embodiment of the method for joining the rectangular steel tube column and the H-shaped steel beam according to the present invention.

[Explanation of symbols]

 1 Square Steel Pipe Column 2 H-Shaped Steel Beam 2a Flange 4 Through Hole 5 Groove 6 Groove 7 Nut Part 8 Diaphragm Piece 9 Backing Plate 10 Welding 11 Welding 12 Welding 13 Beam Mounting Member 14 Headed Bolt 21 Square Steel Pipe Column 22 H Shaped steel beam 22a Flange 24 Through hole 25 Groove 26 Groove 27 Nut part 28 Diaphragm piece 29 Backing plate 30 Welding 31 Welding 32 Welding 33 Beam mounting member 34 Double screw bolt

Claims (6)

[Claims] 1. A rectangular steel tube column is cut at the center between the upper and lower flanges of an H-shaped steel beam to be joined thereto, and a plurality of through holes are formed in the vicinity of the above-mentioned upper and lower flange-corresponding points on its four faces, After forming a groove on the periphery of each through hole, a square plate smaller than the hole area of the square steel tube column is cut along the diagonal line to form an isosceles right triangle, and a groove is formed on two sides that sandwich the right angle. And a plurality of nut portions whose tip can protrude from the through hole of the rectangular steel pipe column on the hypotenuse portion 1
A diaphragm piece consisting of a set of 4 pieces is inserted into each prismatic steel pipe column, the tip of the nut part is fitted into the through hole, and then the tip part of the nut part of each diaphragm piece is welded to the prismatic steel pipe column. A rectangular steel pipe column and an H-shaped steel beam, characterized in that adjacent portions of the diaphragm pieces are welded to each other, then the cut portions of the rectangular steel pipe columns are welded to each other, and then the beam attachment member is attached to the nut portion of the required surface with bolts. How to join. 2. The rectangular steel pipe column according to claim 1, wherein a ring-shaped backing metal is fitted on the tip of the nut before the tip of the nut is fitted into the through hole. And H-shaped steel beam joining method. 3. The rectangular steel tube column and the H-shaped steel beam according to claim 1 or 2, wherein the through-holes of the rectangular steel tube column are formed so as to sandwich the flange of the H-shaped steel beam vertically. How to join. 4. The rectangular steel tube column and the H-shaped steel beam according to claim 1, wherein the through hole of the rectangular steel tube column is formed so as to vertically cross the flange of the H-shaped steel beam. How to join. 5. The method for joining a rectangular steel pipe column and an H-shaped steel beam according to claim 1, wherein the beam attachment member is formed in a T shape. 6. The method for joining a rectangular steel pipe column and an H-shaped steel beam according to claim 1, 2, 3 or 4, wherein the beam attachment member is formed in a plate shape.