JPH06101302A - Steel pipe pillar with diaphragm - Google Patents

Abstract

PURPOSE:To reasonably and inexpensively provide a steel pipe pillar with diaphragms by fitting solid ring-shaped diaphragms each of which has an inside diameter to be fitted to the steel pipe pillar and also has been formed by cutting a thick steel pipe having a prescribed thickness in a plane perpendicular to its axis, in prescribed positions of the steel pipe pillar. CONSTITUTION:The measurement of the length of a steel pipe pillar 14 is carried out, and then solid ring-shaped diaphragms 11 each of which has an inside diamenter to be fitted to the steel pipe pillar 14 and also has been formed by cutting a thick steel pipe having a prescribed thickness in a plane perpendicular to its axis are tack-welded to prescribed positions of the steel pipe pillar 14 that have been vertically aligned and positioned. Then, the tack-welded steel pipe pillar 14 is horizontally placed on a turning roller, and while turning the roller fillet welding is carried out. Thus, since the ring-shaped pieces cut from a thick steel pipe are used, a steel pipe pillar with diaphragms can be inexpensively manufactured without producing scraps.

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 are welded to the joining portion of the steel pipe column.
The diaphragm and the beam member are joined together. When attaching a diaphragm to a circular or square steel pipe column, conventionally, it is possible to cut a diaphragm consisting of an integral or divided small piece that matches the cross-sectional contour shape of a circular or square steel pipe column from a steel plate and weld it to the side wall of the steel pipe column. It was common.

By the way, when a square diaphragm is used for the steel pipe column, the position adjustment of the two diaphragms (angle adjustment)
It is often the case that a circular diaphragm is used from the viewpoint of landscape and it takes time and effort.

[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 attached to a conventional circular steel pipe from a steel plate.

As shown in FIG. 7, a conventional diaphragm 1 mounted on a circular steel pipe pillar is cut out from a steel plate 2 as shown in FIG. 7, and a through hole 3 to be fitted into the steel pipe pillar is cut out at a central portion.
Therefore, there is a problem that a large amount of scrap (hatched portion) is generated from the outside and inside of the diaphragm 1 and the product yield is deteriorated.

In order to prevent a large amount of scrap from being generated here, the diaphragms 1a to 1d as shown in FIG.
When cutting out into several parts, it is necessary to weld each part of the cut out diaphragm to each other to form a ring shape, the diaphragm mounting accuracy is extremely poor, and a lot of welding work is required. As a result, the column material becomes inaccurate and expensive. Even in this case, a considerable amount of scrap (hatched portion) is generated depending on the curved surface of the circular steel pipe.

The present invention solves the above problems,
The purpose is to obtain a reasonable and inexpensive steel pipe column with a diaphragm.

[0008]

In the steel pipe column with a diaphragm according to the invention described in claim 1, in a predetermined portion of the steel pipe column,
An integral annular diaphragm formed by cutting a thick-walled steel pipe having an inner diameter that fits into the steel pipe column and having a predetermined wall thickness to a predetermined thickness on a surface perpendicular to the axis of the thick-walled steel pipe is fitted. And are fillet welded to each other.

In the steel pipe column with a diaphragm according to the invention as defined in claim 2, between the upper steel pipe column and the lower steel pipe column, an inner diameter not larger than the inner diameter of the upper and lower steel pipe columns and an outer diameter of the upper and lower steel pipe columns are provided. An integral annular diaphragm formed by cutting a thick-walled steel pipe having a larger outer diameter to a predetermined thickness on a plane perpendicular to the axis of the thick-walled steel pipe is almost concentrically interposed and welded to each other by butt welding. There is something.

[0010]

In the first invention of the present application, a thick-walled steel pipe having an inner diameter that fits into the steel pipe column and having a predetermined wall thickness is provided at a predetermined portion of the steel pipe column perpendicular to the axis of the thick-walled steel pipe. The integrated annular diaphragm formed by cutting to a predetermined thickness on the surface is fitted,
They are fillet welded to each other. Therefore, since the integrated annular diaphragm cut to a predetermined thickness on the surface perpendicular to the axis of the thick-walled steel pipe is attached to the steel pipe column, scrap does not occur compared to the case where the diaphragm is cut out from the conventional steel plate, and the product The yield is remarkably improved, and the steel pipe column with a diaphragm can be reasonably constructed at low cost.

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

In the second invention of the present application, an inner diameter between the upper steel pipe column and the lower steel pipe column is equal to or smaller than the inner diameter of the upper and lower steel pipe columns and is larger than the outer diameter of the upper and lower steel pipe columns. An integral annular diaphragm formed by cutting a thick-walled steel pipe having the above into a predetermined thickness on a surface perpendicular to the axis of the thick-walled steel pipe is substantially concentrically interposed and welded to each other by butt welding. Therefore, as in the case of the steel pipe column with a diaphragm of the first aspect of the invention, since the integral annular diaphragm formed by cutting the thick-walled steel pipe into a predetermined thickness on the surface perpendicular to the axis is attached to the steel pipe column, Compared to the conventional case where a diaphragm is cut out from a steel plate, scrap does not occur, the product yield is remarkably improved, and a steel pipe column with a diaphragm can be reasonably and inexpensively constructed.

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

[0014]

【Example】

Example. 1 (Outer Diaphragm) FIG. 1 is an explanatory view showing the configuration of an embodiment of a steel pipe column with a diaphragm of the present invention, FIG. A is a perspective view, FIG. B is a sectional view, and FIG. Further, FIG. 2 is an explanatory view showing the cutout of the outer diaphragm shown in FIG. As shown in the figure, in this embodiment, a diaphragm 11 made by cutting a thick-walled steel pipe into slices is fillet-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,
A wall thickness of 32 mm and a length of 12,000 mm were used, and the outer diaphragm 11 was a thick steel pipe 10 having an inner diameter of 604 mm and a wall thickness of 130 mm cut into a width of 50 mm. The thick-walled steel pipe 10 was manufactured by bending and welding a thick plate, cutting was performed with 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 sequentially attached at about 3,000 pitches in the longitudinal direction.

(C) The steel pipe pillar 14 to which the diaphragm 11 was temporarily attached was horizontally placed on a turning roller, and fillet welding was performed while rotating the roller. In this case, the partial penetration welding ensures a sufficient strength of the column. In addition, here
It is also possible to perform automatic welding 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 rectangular steel pipe column, and similarly in the case of the rectangular steel pipe column 34, similarly, the outer diaphragm 3 obtained by cutting the square thick-walled steel pipe 30 into slices.
1 was fitted into a rectangular steel pipe column 34, and was welded and attached.

Example. 2 (through diaphragm type) FIG. 4 is an explanatory view showing the configuration of another embodiment of the steel pipe column with a diaphragm of the present invention, FIG. A is a mounting perspective view, FIG. B is a sectional view, and FIG. C is a plan view. . Further, FIG. 5 is an explanatory diagram showing the cutout 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,
A wall thickness of 32 mm is used, and the length of the upper pillar 44a and the lower pillar 44b is 5,500 mm, and the length of the intermediate pillar 44c is 600 mm.
And As the through diaphragm 41, a thick steel tube 40 having an inner diameter of 500 mm and a wall thickness of 130 mm cut into a width of 50 mm was used. In addition, the groove processing was performed on the end surface of each of the steel pipe columns 44a to 44c.

(B) The through diaphragms 41 are set on both sides of the intermediate column 44c, positioned and temporarily welded. Next, the intermediate pillar 44c was set on the lower pillar 44b, temporary welding was performed, and finally the upper pillar 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 structure is used as a pillar of a building structure through all floors, each pillar length is cut to a predetermined length (for example, 3,000 mm except for beam joints) and the above is followed. All you have to do is work. It can also be used in combination with the outer diaphragm type.

FIG. 6 is an explanatory view showing the manufacture in the case of a square steel pipe column, and similarly in the case of the square steel pipe column 64, a through diaphragm 61 obtained by cutting a square thick-walled steel pipe 60 into slices is used. Then, this was positioned on the rectangular steel pipe columns 64a to 64c, temporary welding was performed, and then butt welding was performed to be attached.

As described above, according to each embodiment, since the outer diaphragm or the perforated through diaphragm is made by cutting the thick-walled steel pipe into slices, the diaphragm-equipped steel pipe column can be manufactured at low cost.

[0026]

As described above, according to the first invention of the present application, a thick-walled steel pipe having an inner diameter that fits into the steel pipe column and a predetermined wall thickness is provided at a predetermined portion of the steel pipe column. An integral annular diaphragm, which is cut to a predetermined thickness on a surface perpendicular to the axis, is fitted and fillet-welded to each other.

Further, in the second invention of the present application, an inner diameter not larger than the inner diameter of the upper and lower steel pipe columns is provided between the upper steel pipe column and the lower steel pipe column, and an outer diameter larger than the outer diameter of the upper and lower steel pipe columns. An integral annular diaphragm formed by cutting the thick steel pipe to a predetermined thickness on a plane perpendicular to the axis of the thick steel pipe is substantially concentrically interposed and welded to each other by butt welding.

Therefore, since the integral annular diaphragm cut to a predetermined thickness on the surface perpendicular to the axis of the thick-walled steel pipe is attached to the steel pipe column, scrap is generated as compared with the case where the diaphragm is cut out from the conventional steel plate. Therefore, there is an effect that the product yield is remarkably improved and a steel pipe column with a diaphragm can be constructed reasonably and inexpensively.

[Brief description of drawings]

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

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

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

4A and 4B are explanatory views showing the configuration of another embodiment of the steel pipe column with a diaphragm of the present invention, wherein FIG. A is a mounting perspective view, FIG. B is a sectional view, and FIG. C is a plan view.

5 is an explanatory view showing a cutout of the through diaphragm shown in FIG.

FIG. 6 is an explanatory diagram showing manufacturing in the case of a rectangular steel pipe column.

FIG. 7 is an explanatory view showing an example of cutting out a diaphragm attached to a conventional circular steel pipe from a steel plate.

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

[Explanation of Codes] 10, 30, 40, 60 ... Thick-walled steel pipe 11, 31, 41, 61 ... Diaphragm 14, 34, 44a to 44c, 64a to 64c ... Steel pipe column

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Osamu Hirano 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Steel Pipe Co., Ltd.

Claims (2)

[Claims] 1. A thick-walled steel pipe having an inner diameter that fits into the steel pipe column and a predetermined wall thickness, is formed in a predetermined portion of the steel pipe column on a surface perpendicular to the axis of the thick-walled steel pipe. A steel pipe column with a diaphragm, characterized in that an integral annular diaphragm formed by cutting into pieces is fitted and welded to each other by fillet welding. 2. A thick-walled steel pipe having an inner diameter equal to or smaller than an inner diameter of the upper and lower steel pipe columns and having an outer diameter larger than an outer diameter of the upper and lower steel pipe columns, between the upper steel pipe column and the lower steel pipe column. A steel pipe column with a diaphragm, characterized in that an integral annular diaphragm formed by cutting the meat steel pipe into a predetermined thickness on a surface perpendicular to the axis is substantially concentrically interposed and welded to each other by butt welding.