JP2662760B2 - Joint structure between steel pipe column and beam - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure between a steel pipe column and a beam in the fields of construction, civil engineering, and bridges.

[0002]

2. Description of the Prior Art The inventor of the present invention has devised a metal joint of a steel structure material which can be joined with one-touch, so that the joint can be made with a few welding spots and bolt tightening spots as much as possible. No. 4-62804).

[0003] As shown in Fig. 8, a plurality of joint pieces 3 are integrally protruded at small intervals from a base 2 which can be welded to the end of a steel structure material of a beam or a column. 3 are formed with through holes 4 through which bolts penetrate in a direction orthogonal to
This is due to the combination of b.

The base 2 is to be welded to the end of a steel structure such as a steel column or a steel beam. The metal fittings 1a and 1b are engaged with the comb-shaped joint pieces 3 of the comb, and a high-strength bolt is inserted into the through hole 4. The steel structure members are joined to each other through the joints of the joint pieces 3 by inserting the nuts 5 and fitting and tightening the nuts 6.

[0005] By doing so, the metal joint 1
a and 1b are interdigitated with the comb-toothed joint pieces 3 alternately positioned and engaged with each other.
Therefore, the tooth-like joint piece 3 of each comb can transmit 90% or more of the axial force of the bolt by two-sided friction.

Further, since each joining piece 3 is subdivided as small as possible in the shape of a comb, the sectional axial strength of each joining piece 3 is smaller than the frictional force. That is, when a frictional force is applied by the high-strength bolt 5 to each joint piece 3, its sectional proof strength is 100%
Thus, the metal joints 1a and 1b are hardly separated from each other so that two books are entangled with each other and combined.

[0007]

However, even in the case where a metal joint of a steel structure material disclosed in Japanese Utility Model Application No. 2-106139 (Japanese Utility Model Application Laid-Open No. 4-62804) shown in FIG. If the joint between the steel pipe column 7 and the beam 8 has no reinforcement such as a diaphragm on the steel pipe column 7 side, the steel pipe column 7 cannot withstand the force of the beam 8 and may be deformed.

In order to prevent such deformation of the steel pipe column 7, an inner diaphragm type in which a diaphragm 9 is provided inside the steel pipe column 7 as shown in FIG. 5 or continuous inside and outside of the steel pipe column 7 shown in FIG. In order to reinforce the column beam connection, a through-diaphragm type in which a diaphragm 9 is provided and an outer diaphragm type in which a diaphragm 9 is provided on an outer peripheral portion of a steel pipe column 7 as shown in FIG.

However, in the case of the diaphragm type as shown in FIGS. 5 to 7, it has to be welded or positioned on the outer peripheral surface of the steel pipe column, so a complicated reinforcing method is required, and joining is difficult.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned disadvantages of the prior art, and to make it possible to easily join at least a few welding spots and bolt tightening spots without taking a complicated reinforcing method in the form of a diaphragm. It is an object of the present invention to provide a joint structure between a steel pipe column and a beam, which can have the same steel structure as that of the steel pipe.

[0011]

According to the present invention, in order to achieve the above object, a large number of joint pieces are integrally protruded at small intervals from a base having a width substantially equal to the width of a flange of a beam. A first hole formed with a through-hole through which a bolt penetrates in a direction orthogonal to the joining piece.
By fixing the base metal to the upper and lower flange ends of the beam, the base side is provided at the beam end, and a plurality of bonding pieces are integrally protruded from the base having a similar width in a comb-like shape at small intervals. Welding a second joint metal having a through hole through which a bolt penetrates in a direction perpendicular to a piece, with its mounting position corresponding to the mounting position of the first metal joint on the outer peripheral surface of the steel pipe column. The steel pipe column is provided with a reinforcing metal plate in the form of a thick curved plate connecting base portions of adjacent second metal fittings to the corners of the outer peripheral surface of the steel pipe column.
The gist of the present invention is that the beam and the steel pipe column are joined via the joints of the metal joints by engaging the joint pieces of the metal joints with each other, inserting a bolt into the through hole, and tightening.

[0012]

According to the present invention, the metal joints are engaged with each other so that the joint pieces are alternately positioned and fastened with bolts in the orthogonal direction. Therefore, each joint piece has an axial force of the bolt due to two-sided friction. 90% or more can be transmitted. Also,
Since each joining piece is subdivided as small as possible into the shape of a comb, the sectional axial strength of each joining piece is smaller than the frictional force.

That is, when a frictional force is applied to each joint piece by bolts, the sectional strength of the joint piece can be exhibited 100%, and the metal joints are hardly separated from each other as if two books are entangled and combined. Becomes

Further, the base side of the second metal fitting is welded to the outer peripheral surface of the steel pipe column, which is a column beam connection, and this portion acts as reinforcement of the steel pipe column, so that the steel pipe column is not easily deformed without a diaphragm. It will be. Since the mounting positions of the second metal fittings are located above and below the first metal fittings from the upper and lower flange ends of the beam, the column beam connection can be made of a steel structure effectively.

Moreover, the steel pipe column is reinforced with a continuous body of the base side of the second joining metal part and the reinforcing metal member in the form of a plate, and the outer peripheral surface thereof is reinforced in a chisel-like manner, and has a steel structure similar to that using a diaphragm. be able to. In addition, since this plate-shaped reinforcing metal is formed of a thick curved plate, it itself has high proof stress, and is excellent in improving proof stress. In particular, the use of this reinforcing metal enables effective reinforcement when the diameter of the steel pipe column and the beam width are different and the width of the base of the second joint metal is smaller than the diameter of the steel pipe column.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a plan view showing an embodiment of a joint structure between a steel pipe column and a beam according to the present invention. FIG. 2 is a front view of the same, in which 7 is a steel pipe column, and 8 is a beam made of an H-shaped steel frame.

The first metal fitting 1a and the second metal fitting 1b provided on the steel pipe columns 7 and 8 are formed from the base 2 which can be welded to the end of the steel structural material, as described with reference to FIG. Are protruded integrally at small intervals in the shape of a comb,
The joining piece 3 is formed with a through hole 4 through which a bolt penetrates in an orthogonal direction.

At the upper and lower flange 8a ends of the beam 8, a first metal fitting 1a having a base 2 having a width substantially equal to the width of the flange 8a is fixed to the base 2 by welding or bolting or other means. Provided by

On the outer peripheral surface of the steel tube post 7, a second second joint metal member 1b having a base 2 having the same width as the first joint metal member 1a is attached. Then, the base 2 is provided by welding corresponding to the mounting position of the first metal fitting 1a.

Further, at the corner of the outer peripheral surface of the steel pipe column 7, a reinforcing metal plate 10 having a plate shape is connected so as to connect the bases 2 of the second joint metal members 1b provided on the adjacent surfaces.
And the base 2 so as to be welded. FIG. 3 shows this reinforcing metal fitting 10 in the form of a plate. The reinforcing metal fitting 10 is a thick curved plate, the inside of which is perpendicular to the corners of the outer peripheral surface of the column 7 at right angles so that it can cope with any curvature. . The radius of curvature may be the same as that of the corner of the outer peripheral surface of the steel pipe column 7.

The attachment of the first metal joint 1a to the beam 8 and the attachment of the second metal joint 1b and the reinforcing metal plate 10 to the steel pipe column 7 are performed in advance at the factory side.

In this way, at the site, the first and second
The joining pieces 3 of the metal fittings 1a and 1b are engaged with each other, the high-strength bolt 5 is inserted into the through hole 4 and tightened with the nut 6, so that the beam 8 and the steel pipe column 7 are joined to each other with the metal fittings 1a and 1b. To join.

In the case where the diameter of the steel pipe column 7 and the width of the beam 8 are not so different, and the width of the base portion 2 side of the second metal fitting 1b is not different from the diameter of the steel pipe column 7, this case is considered. Plate-shaped reinforcing hardware 10
This may be omitted for mounting.

The present invention can be applied not only to the case of the box column as shown in the figure but also to the case of a cylindrical column.
The plate-shaped reinforcing hardware 10 can also be used in accordance with the curvature of the column.

[0025]

As described above, the joint structure between a steel pipe column and a beam according to the present invention can easily reinforce the steel pipe column without taking a complicated reinforcing method in the form of a diaphragm. Can be easily joined at the fewest possible welding spots and bolt tightening spots, and a steel structure similar to that using a diaphragm can be obtained.

[Brief description of the drawings]

FIG. 1 is a plan view showing one embodiment of a joint structure between a steel pipe column and a beam according to the present invention.

FIG. 2 is a front view showing one embodiment of a joint structure between a steel pipe column and a beam according to the present invention.

FIG. 3 is a perspective view of a plate-shaped reinforcing metal.

FIG. 4 is a plan view showing a deformed state of a joint between a steel pipe column and a beam.

FIG. 5 is a plan view of a conventional example of an inner diaphragm type.

FIG. 6 is a plan view of a through-diaphragm type in a conventional example.

FIG. 7 is a plan view of a conventional example of an outer diaphragm type.

FIG. 8 is a perspective view of a metal joint.

[Explanation of symbols]

1a 1st joining hardware 1b 2nd joining hardware 2 ... base 3 ... joint piece 4 ... through hole 5 ... high strength bolt 6 ... nut 7 ... steel pipe column 8 ... beam 8a ... flange 9 ... diaphragm 10 ... plate Shaped reinforcement hardware

Claims (1)

(57) [Claims] 1. A plurality of joint pieces are integrally protruded at small intervals from a base having a width substantially equal to the width of a flange of a beam, and a through hole through which a bolt penetrates in a perpendicular direction is formed in the joint piece. The first metal fitting thus formed is fixed to the upper and lower flange ends of the beam so as to be provided at the beam end, and a large number of pieces are integrally protruded from the base having the same width in a comb-like shape at small intervals. Then, a second joint metal member having a through-hole through which a bolt penetrates in the orthogonal direction is formed in the joint piece, and its mounting position is made to correspond to the mounting position of the first joint metal member on the outer peripheral surface of the steel pipe column. Is provided on the steel pipe column by welding, and at the corner portion of the outer peripheral surface of the steel pipe column, a plate-shaped reinforcing metal member made of a thick curved plate connecting base portions of adjacent second joint metal members is attached, and 1, The joining pieces of the second joining hardware are engaged with each other, and bolts are inserted through the through holes and tightened. A joint structure between a steel tube column and a beam, wherein the beam and the steel tube column are joined through a joint between metal joints.