JP2715831B2 - Steel pipe column with diaphragm - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel pipe column with a diaphragm.

[0002]

2. Description of the Related Art When a beam or the like is attached to a steel pipe column, a pair of upper and lower horizontal diaphragms is welded to a joining portion of the steel pipe column.
The diaphragm and the beam are joined. When attaching a diaphragm to a circular or square steel pipe column, it is conventionally possible to cut out a diaphragm consisting of an integral or divided small piece conforming to the cross-sectional profile of a circular or square steel pipe column from a steel plate and weld it to the side wall of the steel pipe column. Was common.

When a square diaphragm is used for a steel pipe column, the position adjustment (angle adjustment) of the two diaphragms is performed.
In many cases, and a circular diaphragm is often used from the viewpoint of a landscape.

[0004]

FIG. 7 is an explanatory view showing an example of cutting out a diaphragm mounted on a conventional circular steel pipe from a steel plate. FIG. 8 is an explanatory view showing another example of cutting out a diaphragm mounted on a conventional circular steel pipe from a steel plate.

As shown in FIG. 7, a conventional diaphragm 1 mounted on a circular steel pipe column is cut out from a steel plate 2 as shown in FIG.
For this reason, many scraps (hatched portions) are generated from the outside and inside of the diaphragm 1, and there is a problem that the product yield is deteriorated.

In order to prevent a large amount of scrap from being generated, the diaphragms 1a to 1d as shown in FIG.
If the diaphragm is cut out into several parts, it is necessary to weld each part of the cut-out diaphragm to each other to form a ring shape, and the mounting accuracy of the diaphragm is extremely deteriorated, and a lot of welding work is required Therefore, the accuracy is low and the column material is expensive. Even in this case, a considerable amount of scrap (hatched portion) is generated according to the curved surface of the circular steel pipe.

[0007] The present invention solves the above problems,
It aims at obtaining a reasonable and inexpensive steel pipe column with a diaphragm.

[0008]

In a steel pipe column with a diaphragm according to the first aspect of the present invention, a predetermined portion of the steel pipe column includes:
An integral annular diaphragm formed by cutting a thick steel pipe having an inner diameter fitted to the steel pipe column and having a predetermined thickness to a predetermined thickness on a plane perpendicular to the axis of the thick steel pipe is fitted. And are fillet welded to each other.

In the steel pipe column with a diaphragm according to the present invention, the inner diameter of the upper and lower steel pipe columns is smaller than the inner diameter of the upper and lower steel pipe columns and the outer diameter of the upper and lower steel pipe columns. An integral annular diaphragm formed by cutting a thick steel pipe having a larger outer diameter to a predetermined thickness on a plane perpendicular to the axis of the thick steel pipe is interposed substantially concentrically and butt-welded to each other. Is what it is.

[0010]

According to the first aspect of the present invention, a thick steel pipe having an inner diameter and a predetermined wall thickness which fits into the steel pipe column is provided at a predetermined portion of the steel pipe column in a direction perpendicular to the axis of the thick steel pipe. An integral annular diaphragm cut to a predetermined thickness on the surface is fitted,
They are fillet welded to each other. Therefore, since the integral annular diaphragm cut to a predetermined thickness on a plane perpendicular to the axis of the thick steel pipe is attached to the steel pipe column, scraps do not come out as compared with the case where the diaphragm is cut out from a conventional steel plate, and the product does not come out. Yield is remarkably improved, and a steel pipe column with a diaphragm can be constituted reasonably inexpensively.

In this case, the fillet welding of the diaphragm is preferably a partial penetration welding, and is integrated over the entire circumference.

Further, in the second invention of the present application, an outer diameter between the upper steel pipe pillar and the lower steel pipe pillar is smaller than the inner diameter of the upper and lower steel pipe pillars and larger than the outer diameter of the upper and lower steel pipe pillars. An annular diaphragm formed by cutting a thick steel pipe having a predetermined thickness on a plane perpendicular to the axis of the thick steel pipe is substantially concentrically interposed and butt-welded to each other. Therefore, as in the case of the above-described diaphragm-attached steel pipe column of the first invention, an integral annular diaphragm cut to a predetermined thickness on a plane perpendicular to the axis of the thick steel pipe is attached to the steel pipe column. Compared with a conventional case where a diaphragm is cut out from a steel plate, no scrap is produced, the product yield is remarkably improved, and a steel pipe column with a diaphragm can be constituted reasonably and inexpensively.

In this case, the butt welding of the diaphragm is preferably penetration welding, and is integrated over the entire circumference.

[0014]

【Example】

Example. 1 (Outer Diaphragm) FIG. 1 is an explanatory view showing a configuration of an embodiment of a steel pipe column with a diaphragm according to the present invention. FIG. 1A is a perspective view, FIG. FIG. 2 is an explanatory view showing cutting out of the outer diaphragm shown in FIG. As shown in the drawing, in this embodiment, a diaphragm 11 having a thick steel pipe cut into a round piece is welded to the outside of a steel pipe column. The specific manufacturing is as follows.

(A) The steel pipe column 14 has an inner diameter of 600 mm,
The outer diaphragm 11 was cut out from a thick steel pipe 10 having an inner diameter of 604 mm and a thickness of 130 mm to a width of 50 mm, with a thickness of 32 mm and a length of 12,000 mm. The thick steel pipe 10 was manufactured by bending and welding a thick plate, and the cutting was performed by a cold saw, and the burr portion was subjected to grinder processing or the like as necessary.

(B) The length of the steel pipe column 14 was measured, the diaphragm 11 was vertically centered, positioned, and temporarily welded.
In this way, the outer diaphragms 11 were attached sequentially at about 3,000 pitches in the longitudinal direction.

(C) The steel pipe column 14 to which the diaphragm 11 was temporarily attached was placed horizontally on a turning roller, and fillet welding was performed while rotating the roller. In this case, the strength of the column is sufficiently ensured by partial penetration welding. Here,
Automatic welding can also be performed while synchronizing the rotation of the turning roller with the welding speed.

FIG. 3 is an explanatory view showing the manufacture in the case of a square steel tube column. Similarly, in the case of the square steel tube column 34, similarly, the outer diaphragm 3 obtained by sectioning the square thick steel tube 30 is shown.
1 was fitted to a square steel pipe column 34 and attached by welding.

Embodiment 1 2 (Through Diaphragm Type) FIG. 4 is an explanatory view showing a configuration of another embodiment of a steel pipe column with a diaphragm according to the present invention, wherein FIG. . FIG. 5 is an explanatory view showing cutting out of the through diaphragm shown in FIG. As shown in the figure, in this embodiment, a through-diaphragm is attached to a steel pipe. The specific manufacturing is as follows.

(A) The steel pipe column 44 has an inner diameter of 600 mm,
The upper column 44a and the lower column 44b are 5,500 mm in length, and the intermediate column 44c is 600 mm in length.
And The through-diaphragm 41 used was cut out from a thick steel pipe 40 having an inner diameter of 500 mm and a wall thickness of 130 mm to a width of 50 mm. In addition, each steel pipe column 44a-44c was grooved on the end face.

(B) On both sides of the intermediate column 44c, the through-diaphragm 41 was set, positioned, and temporarily welded. Next, the intermediate column 44c was set on the lower column 44b, and temporary welding was performed, and finally, the upper column 44a was joined.

(C) The steel pipe column 44 to which the diaphragm 41 was temporarily attached was placed horizontally on a turning roller, and butt welding was performed while rotating the roller. Here, penetration welding was sufficiently performed.

When a diaphragm is used as a pillar of a building structure through each floor, the length of each pillar is cut to a predetermined length (for example, 3,000 mm except for a beam joint), and the same as above. Just do the work. Also, it can be used together with the outer diaphragm type.

FIG. 6 is an explanatory view showing the manufacture in the case of a square steel pipe column. Similarly, in the case of the square steel pipe column 64, a through-diaphragm 61 obtained by sectioning a square thick steel pipe 60 is used. These were positioned on the square steel pipe columns 64a to 64c, temporarily welded, and then butt welded.

As described above, according to each embodiment, since the outer diaphragm or the through-hole diaphragm is formed by cutting a thick-walled steel pipe into a ring, the steel pipe column with the diaphragm can be manufactured at a low cost.

[0026]

As described above, according to the first invention of the present application, a thick steel pipe having an inner diameter fitted to the steel pipe column and having a predetermined thickness is formed on a predetermined portion of the steel pipe column. An integral annular diaphragm cut into a predetermined thickness on a plane perpendicular to the axis is fitted and welded to each other.

Further, in the second invention of the present application, between the upper steel column and the lower steel column, an outer diameter having an inner diameter equal to or smaller than the inner diameter of the upper and lower steel columns and larger than the outer diameter of the upper and lower steel columns is provided. An integrated annular diaphragm formed by cutting a thick steel pipe having a predetermined thickness on a plane perpendicular to the axis of the thick steel pipe is substantially concentrically interposed and butt-welded to each other.

Therefore, since the integral annular diaphragm cut to a predetermined thickness on the plane perpendicular to the axis of the thick steel pipe is mounted on the steel pipe column, scraps are generated as compared with the case where the diaphragm is cut out from the conventional steel plate. In addition, there is an effect that the product yield is remarkably improved, and a steel pipe column with a diaphragm can be constituted reasonably inexpensively.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing the configuration of an embodiment of a steel pipe column with a diaphragm according to the present invention, wherein FIG. 1A is a perspective view, FIG.
FIG. C shows a plan view.

FIG. 2 is an explanatory view showing cutting out of the outer diaphragm shown in FIG. 1;

FIG. 3 is an explanatory view showing production in the case of a square steel pipe column.

4 is an explanatory view showing a configuration of another embodiment of a steel pipe column with a diaphragm according to the present invention, wherein FIG. 4A is an attached perspective view, FIG.

FIG. 5 is an explanatory view showing cutting out of the through diaphragm shown in FIG. 4;

FIG. 6 is an explanatory view showing production in the case of a square steel pipe column.

FIG. 7 is an explanatory diagram showing an example of cutting out a diaphragm mounted on a conventional circular steel pipe from a steel plate.

FIG. 8 is an explanatory view showing another example of cutting out a diaphragm mounted on a conventional circular steel pipe from a steel plate.

[Explanation of symbols]

 10, 30, 40, 60: thick steel pipe 11, 31, 41, 61: diaphragm 14, 34, 44a to 44c, 64a to 64c: steel pipe column

Continuation of the front page (72) Inventor Atsushi Hirano 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Inside Nippon Kokan Co., Ltd. (56) References JP-A-5-340032 (JP, A) JP-A-5-331967 ( JP, A) JP-A-62-82149 (JP, A) JP-A-63-219745 (JP, A) JP-A-2-232451 (JP, A) Japanese Utility Model Showa 63-8302 (JP, U)

Claims (2)

(57) [Claims] 1. A thick steel pipe having an inner diameter fitted to the steel pipe column and having a predetermined thickness is fixed to a predetermined portion of the steel pipe column in a plane perpendicular to the axis of the thick steel pipe. A steel pipe column with a diaphragm, wherein an integrally annular diaphragm cut into a shape is fitted and welded to each other. 2. A thick steel pipe having an inner diameter equal to or less than the inner diameter of the upper and lower steel pipe columns and having an outer diameter larger than the outer diameter of the upper and lower steel pipe columns is provided between the upper steel pipe column and the lower steel pipe column. A steel pipe column with a diaphragm, wherein an integrally annular diaphragm cut into a predetermined thickness on a plane perpendicular to the axis of the steel pipe is substantially concentrically interposed and butt-welded to each other.