JP2001065053A - Diaphragm - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve welding workability with a column member, and to enhance joining strength by forming a welding groove with the outer periphery of the column member on the inner peripheral edge of a ring-shaped joining member capable of being installed on the outer periphery of the column member, and arranging a flat part on this bottom surface. SOLUTION: Since a welding groove is formed in a straight line-shaped part on the inner peripheral edge of a joining member 12, a welding part 17 is executed only in a part for linearly opposing the outer periphery of a column member 11 and the inner periphery of the joining member 12 of a diaphragm 10. Opposed parts of an outer peripheral corner part of the column member 11 and an inner peripheral corner part of the joining member 12 are not welded to arrange a void. Since a flat part is arranged on a bottom surface of the welding groove, at welding, a welding arc sufficiently reaches up to the deep part so as not to cause a welding defect. Since a curved surface part is arranged on both end inner peripheral surfaces of the welding groove, welding metal sufficiently spreads to prevent the occurrence of a welding defect at the starting end and the trailing end of the welding part 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a diaphragm used for a joint between a column member and a beam member forming a steel structure.

[0002]

2. Description of the Related Art Conventionally, a diaphragm 90 as shown in FIG. 10 is used at a joint between a square steel pipe used for a column member of a steel structure and an H-shaped steel used for a beam member. The diaphragm 90 includes a square ring-shaped joining member 92 through which the steel pipe column 91 can penetrate, and a plurality of beam connecting members 93 connected to the outer periphery of the joining member 92.

[0003] A diaphragm 90 is mounted on the outer periphery of a steel tube column 91, the outer periphery of the steel tube column 91 is joined to a joining member 92 of the outer diaphragm 90 at a welding portion 94, and a flange of the beam member is joined to a beam connecting member 93. By doing so, the steel pipe column 91
And the beam member are fixed.

By using such a diaphragm 90, the steel pipe column 91 can be cut without cutting the steel pipe column 91.
And the beam member can be joined.

[0005]

SUMMARY OF THE INVENTION A conventional diaphragm 9
0, the outer periphery of the steel pipe column 91 and the diaphragm 90
A welding groove 95 is formed in advance on the inner peripheral edge of the joining member 92 in order to join the joining member 92 with the welding portion 94.

However, since the welding groove 95 has a shape inclined toward the bottom, not only the welding workability is poor, but also the welding arc does not sufficiently reach a deep portion during welding, resulting in insufficient penetration. The possibility of causing welding defects is high.

[0007] If a defect exists in the welded portion 94, the joining strength between the diaphragm 90 and the steel pipe column 91 is greatly reduced, and when a large load is applied, there is a possibility that a crack or breakage may occur.

[0008] An object of the present invention is to provide a diaphragm which has good welding workability with a column member and can form a welded joint having high strength and reliability.

[0009]

In order to solve the above-mentioned problems, a diaphragm according to the present invention is used at a joint between a column member and a beam member, and has a ring shape which can be mounted on the outer periphery of the column member. And a beam connecting member connected to the outer periphery of the joining member, forming a welding groove with the column member outer periphery on the inner peripheral edge of the joining member, and forming a flat portion on the bottom surface of the welding groove. It is characterized by having been provided.

[0010] With this configuration, the welding arc can sufficiently reach the deep portion of the welding groove, so that the welding workability is improved and no welding defects are generated.
A weld joint with high strength and reliability can be formed.

By making the inner peripheral surfaces of both ends of the welding groove curved, occurrence of welding defects at the start and end of the weld can be prevented, and the reliability of the weld can be further improved.

[0012] By forming the welding groove only in the straight portion of the inner peripheral edge of the joining member, when the diaphragm is mounted on the rectangular steel pipe, the outer peripheral corner part having a large residual stress due to the manufacturing process of the rectangular steel pipe is avoided. Therefore, it is possible to prevent the deterioration of the material of the outer peripheral corner portion of the square steel pipe due to heat input by welding.

By making the upper surface of the beam connecting member and the upper surface of the joining member substantially flush with each other, when the diaphragm is mounted on the upper end portion of the column member, a part of the diaphragm rises from the upper end surface of the column member. Since it does not protrude, interference with other structural members and the like can be eliminated, and workability is improved.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a plan view showing a diaphragm according to a first embodiment, FIG. 2 is a front view thereof, and FIG.
4 is a partially enlarged view of FIG. 3.

The diaphragm 10 includes a ring-shaped joining member 12 through which a column member 11 made of a square steel pipe can pass.
Plate-shaped beam connecting member 1 connected to the outer periphery of joining member 12
The beam connecting member 13 has a tapered shape gradually narrowing outward from the center of the joining member 12.

The thickness of the beam connecting member 13 is
The pillar-shaped member 11 is smaller than the length in the longitudinal direction, but is formed at both side edges of the beam connecting member 13 with a slope-shaped reinforcing portion 14 whose thickness is gradually reduced from the base end to the tip end. Have been.

A welding groove 16 for joining with the column member 11 is formed in a straight portion on the inner peripheral edge of the upper and lower surfaces of the joining member 12. The welding groove 16 is formed with a smooth concave curved surface, and a flat portion 16a is provided on the bottom surface.
In addition, curved portions 16b are provided on the inner peripheral surfaces of both ends of the welding groove 16.

Here, a method of mounting the diaphragm 10 on the column member 11 will be described with reference to FIG. As shown in FIG. 5, the column member 11 is inserted into the joining member 12 of the diaphragm 10 and welding is performed between the outer peripheral surface of the column member 11 and the welding groove 16. It is fixed to the outer periphery of the member 11.

In this case, the welding groove 16 is connected to the joining member 12.
Is formed only at the linear portion of the inner peripheral edge of the welding member 17, the welded portion 17 is applied only to the portion where the outer periphery of the column member 11 and the inner periphery of the joining member 12 of the diaphragm 10 are linearly opposed. And the opposing part of the outer peripheral corner part of the column member 11 and the inner peripheral corner part of the joining member 12 is not welded,
An air gap 18 is provided (see FIG. 1).

The reason why the gap 18 is provided is that, since the residual stress due to the manufacturing process of the rectangular steel pipe is relatively large at the outer peripheral corner of the column member 11, the material deteriorates when such a corner is welded. This is because the strength is likely to be reduced, and this is avoided.

Since the flat portion 16a is provided on the bottom surface of the groove 16 for welding, the welding arc sufficiently reaches a deep portion during welding, so that the welding workability is good and no welding defects occur. Thus, the welded portion 17 having high strength and high reliability can be formed.

Further, since the curved portions 16b are provided on the inner peripheral surfaces of both ends of the welding groove 16, the weld metal is sufficiently spread to prevent the occurrence of welding defects at the start and end of the welded portion 17. Therefore, the reliability of the welded portion 17 is improved.

After the two diaphragms 10 are mounted on the outer periphery of the column member 11 at predetermined intervals in the vertical direction, as shown in FIG. 5, each of the beam members 15 is attached to the distal end of the beam connecting member 13 of the diaphragm 10. The column member 11 and the beam member 15 are joined by welding the flange 15a.

Note that the diaphragm 10 of the present embodiment is
Although three beam connecting members 13 are provided around the joining member 12, the present invention is not limited to this, and the beam connecting member 1 may be provided in accordance with the number of beam members 15 joined to the column member 11.
The number of 3 can be 1 to 2 or 4 or more.

Next, referring to FIGS. 6 to 9, the second embodiment of the present invention will be described.
An embodiment will be described. 6 is a plan view showing the diaphragm of the second embodiment, FIG. 7 is a front view of the same, FIG. 8 is a sectional view taken along line BB of FIG. 6, and FIG. 9 shows a state where the diaphragm of FIG. It is a perspective view.

As in the case of the diaphragm 10, the diaphragm 20 has a ring-shaped joining member 22 through which a column member 11 made of a square steel pipe can penetrate, and a plate-shaped beam connecting member 23 connected to the outer periphery of the joining member 22. The beam connecting member 23 has a tapered shape gradually narrowing outward from the center of the joining member 22.

The thickness of the beam connecting member 23 is
The upper surface of the beam connecting member 23 is the same as the upper surface of the joining member 22. In addition, on both side edges of the lower surface of the beam connecting member 23,
A slope-shaped reinforcing portion 24 is formed in which the thickness is gradually reduced from the base end portion toward the tip end portion.

A welding groove 26 for joining to the column member 11 is formed in a linear portion on the inner peripheral edge of the upper and lower surfaces of the joining member 22. The welding groove 26 is formed with a smooth concave curved surface, and a flat portion 26a is provided on the bottom surface.
In addition, curved surfaces 26b are provided on the inner peripheral surfaces of both ends of the welding groove 16.

As shown in FIG. 9, after the diaphragm 10 is joined to the outer periphery of the column member 11 in the above-described procedure,
By attaching the joining member 22 of the diaphragm 20 to the upper end 11a of the first member 1 and performing welding between the outer peripheral surface of the column member 11 and the welding groove 26, the diaphragm 20
Thus, it is fixed to the outer periphery of the column member 11.

In this case, the welding groove 26 is connected to the joining member 22.
Is formed only at the linear portion of the inner peripheral edge of the column member 11, the welded portion 27 is formed only at the portion where the outer periphery of the upper end 11a of the column member 11 and the inner periphery of the joining member 22 of the diaphragm 20 are linearly opposed. The facing portion between the outer peripheral corner of the upper end 11a of the column member 11 and the inner peripheral corner of the joining member 22 is not welded, and a gap 28 is provided. The reason for providing the gap 28 and the like are the same as in the first embodiment.

Thereafter, the upper and lower flanges 15a of the beam member 15
To the beam connecting members 1 of the diaphragms 10 and 20, respectively.
The column member 11 and the beam member 15 can be joined by welding to the tips of the members 3 and 23.

In the diaphragm 20, the beam connecting member 23
And the upper surface of the joining member 22 are flush with each other, so that when mounted on the upper end portion of the column member 11, a part of the diaphragm 20 does not protrude upward from the upper end surface of the column member 11. . Therefore, in the case where the column member 11 and the beam member 15 are joined at the uppermost portion of the steel structure or the like, a part of the diaphragm 20 does not interfere with other structural members such as a roof material, and the workability is excellent. ing.

Note that the diaphragm 20 of the present embodiment also
Although three beam connecting members 23 are provided around the joining member 22, the present invention is not limited to this, and the beam connecting members 2 may be provided in accordance with the number of the beam members 15 joined to the column member 11.
The number of 3 can be 1 to 2 or 4 or more.

[0034]

According to the present invention, the following effects can be obtained.

(1) A ring-shaped joining member that can be attached to the outer periphery of the column member, and a beam connecting member connected to the outer periphery of the joining member, for welding the inner peripheral edge of the joining member to the outer periphery of the column member. By forming a groove and providing a flat part on the bottom of the welding groove, the welding arc can reach the deep part of the welding groove sufficiently, so that welding workability is improved and welding defects occur. Without forming a welded joint having high strength and high reliability.

(2) By forming the inner peripheral surfaces of both ends of the welding groove as curved surfaces, it is possible to prevent the occurrence of welding defects at the start and end of the welded portion, thereby further improving the reliability of the welded portion.

(3) By forming the welding groove only on the straight portion of the inner peripheral edge of the joining member, when the diaphragm is mounted on the rectangular steel pipe, the outer peripheral corner where there is much residual stress due to the manufacturing process of the rectangular steel pipe. Since it is possible to weld only to the outer peripheral flat portion avoiding the portion, it is possible to prevent deterioration of the material of the outer peripheral corner portion of the square steel pipe due to welding heat input.

(4) By making the upper surface of the beam connecting member and the upper surface of the joining member substantially flush with each other, when the diaphragm is mounted on the upper end portion of the column member, a part of the diaphragm becomes the upper end surface of the column member. Because it will not protrude upward from
Interference with other structural members can be eliminated, and workability is improved.

[Brief description of the drawings]

FIG. 1 is a plan view showing a diaphragm according to a first embodiment.

FIG. 2 is a front view of the diaphragm of FIG.

FIG. 3 is a sectional view taken along line AA of FIG. 1;

FIG. 4 is a partially enlarged view of FIG. 3;

FIG. 5 is a perspective view showing a state where the diaphragm of FIG. 1 is mounted on a column member.

FIG. 6 is a plan view showing a diaphragm according to a second embodiment.

FIG. 7 is a front view of the diaphragm shown in FIG. 6;

FIG. 8 is a sectional view taken along line BB of FIG. 6;

FIG. 9 is a perspective view showing a state where the diaphragm of FIG. 6 is mounted on a pillar member.

FIG. 10 is a perspective view showing a conventional diaphragm.

[Explanation of symbols]

 10, 20 Diaphragm 11 Column member 11a Upper end 12,22 Joint member 13,23 Beam connection member 14,24 Reinforcement part 15 Beam member 15a Flange 16,26 Welding groove 16a, 26a Flat part 16b, 26b Curved surface part 17, 27 Weld 18, 28 Air gap

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2E125 AA04 AA14 AB01 AB16 AC15 AC16 AG49 AG57 BB22 BB27 BC06 BD01 BE08 BF01 CA90 4E081 FA14 YB02 YB03 YB04 YR04 YX02 YX08 YX09

Claims (4)

[Claims] 1. A diaphragm used in a joint portion between a column member and a beam member, wherein the ring-shaped joint member can be mounted on an outer periphery of the column member, and a beam connecting member connected to the outer periphery of the joint member. A diaphragm formed on the inner peripheral edge of the joining member, the groove for welding to the outer periphery of the column member, and a flat portion provided on the bottom surface of the groove for welding. 2. The diaphragm according to claim 1, wherein inner peripheral surfaces of both ends of the welding groove are curved. 3. The diaphragm according to claim 1, wherein the groove for welding is formed only on a straight portion of an inner peripheral edge of the joining member. 4. The diaphragm according to claim 1, wherein an upper surface of the beam connecting member and an upper surface of the joining member are substantially flush with each other.