JPH01190840A - Column girder joint - Google Patents

Abstract

PURPOSE:To make it possible to penetrate and fill concrete satisfactorily by combining plural numbers of integral components into a ring form so as to be mounted onto the girder joining section of a steel pipe column, and thereby enabling them to be also used for the mid-section of a seamless continuous column. CONSTITUTION:A plurality of column girder joints 18 which is divided and formed integrally into one body, are mounted onto the joining section of a girder 20 so as to be joined by means of fully penetrated welding. The column girder joints 10... make the area of a section extending outward smaller than those of joining sections with the girder 20 except a girder joining section 16. And let each section of the column girder joints 10... retain the cross sectional area large enough to the order by which anticipated external force can be sufficiently transmitted.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to structures in the field of architecture or civil engineering, and particularly relates to a structure in which a steel pipe column is filled with concrete and a beam installed therein. Regarding the structure of the member.

[Prior Art] When joining a column and a beam, the joint must be designed in consideration of the external force, or moment, applied to the beam.

In addition, in recent years, many structural columns are made of steel pipes filled with concrete in order to improve their strength, so in such cases, the filling properties of the concrete to be press-fitted must also be considered. Must be.

Conventionally, this situation has been dealt with by installing a thick plate with a hole in the center as a diaphragm inside the column connection, or by providing a diaphragm of uniform thickness around the outer periphery of the column. Ta.

[Problem to be solved by the invention] However, a diaphragm that is simply a thick plate with through holes,
In terms of strength, the through hole cannot be made very large.
In addition, the flow of the concrete being press-fitted was blocked in areas other than the through-holes, making it difficult to press-fit the concrete smoothly. Furthermore, after concrete was press-fitted from the bottom of the steel pipe column, the concrete sank and voids were formed at the corners of the diaphragm, and the inner container of the steel pipe column was not filled with concrete sufficiently.

Furthermore, the diaphragm has to be set before fixing the steel pipe column, and it also has to be interposed at the connecting portion of the steel pipe column, which is disadvantageous in that it cannot be used in the middle of a continuous steel pipe column.

On the other hand, if a diaphragm with a uniform thickness is installed around the outer periphery of the column, although it is possible to press in and fill concrete, it is difficult to weld it with the beam. As a result, the steel pipe columns protrude outward, requiring extra space in terms of plane, which is a big problem especially when the steel pipe columns are used indoors.

The present invention has been made in view of these points, and an object of the present invention is to provide a column-beam connecting member that has good concrete press-in and filling properties and can save space in a plan view.

[Means for Solving the Problems] The beam joint system according to the present invention consists of a plurality of integrally molded members that are divided so as to constitute the ring portion when put together, and each of these integrally molded parts The area of the steel pipe column other than the joint with the beam that is connected to the phase is made smaller than the area of the joint with the beam, and the area of the steel pipe column is made small enough to sufficiently propagate the expected external force. The above-mentioned problem is solved by forming each part to have a different cross-sectional area.

[Operations] Since the column-beam joint according to the present invention is installed on the outer periphery of the steel pipe column, the inside of the steel pipe column becomes a cavity without any obstruction, and it goes without saying that the press-in and filling of concrete can be carried out well. ,
In addition, it has the following effects.

In other words, since the member is composed of a plurality of integrally molded members that are divided into parts so as to form a ring member when put together, even if there are manufacturing errors in each integrally molded member or steel pipe column, these parts will not be affected. This means that it can be set in a good position at all times.

In addition, the area of each integrally formed member that extends outward from the steel pipe column other than the joint with the beam is made smaller than the area of the joint with the beam. Because each part is formed with a cross-sectional area, it is possible to save space for the entire part, and at the same time, stable force can be propagated in any part, and by reducing the planar area of the shrine. There is no possibility of a partial decrease in strength.

[Embodiments] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows an external appearance of a beam-column joint member 10 according to an embodiment of the present invention, FIG. 2(A) shows a view of FIG. Each is shown as viewed from the -b direction.

The column-beam joint 10 according to this embodiment is for a square steel pipe column, and is divided into four equal parts so as to cover the corners of the square steel pipe column, each of which is manufactured by casting into the same shape. be done.

The shape of each divided member of the pillar joint part 10 will be explained below. For convenience of explanation, since all the members have the same shape, only the upper right and lower left members in the figure will be illustrated with reference numerals.
are doing.

As can be seen from the figure, each member is shaped to minimize the external space and omit the corners.

In the figure, 12 is the highest part, and the thickness gradually becomes thinner toward the boundary part 14, and the beam joint part 16 outside the boundary part 14 has the thinnest thickness and is in a flat state. This beam joint portion 16 is formed to have approximately the same thickness as a beam 20, which will be described later. This is done from the viewpoint of welding construction management and economy, and by making the thickness of the beam joint 16 almost the same as that of the beam 20 to be joined, the heat input before welding is uniform, and the welding conditions This makes it possible to achieve good welding by matching the values.

In addition, the highest part 12. The wall thickness of each portion of the boundary portion 14 and the beam joint portion 16 changes continuously.

In this example, each part is formed to have a wall thickness corresponding to the planar area of that part, but if this is constant throughout the thickness of the member, the thickness of the part corresponding to the corner of the steel pipe column is This is because the strength partially decreases.

Specifically, while minimizing the planar area of the joining member 10, in order to ensure stable force propagation, each part is given a cross-sectional area corresponding to the magnitude of the external force transmitted from the beam.
Parts 12 and the like having a small planar area are made thicker to compensate for their strength, thereby avoiding a partial decrease in strength due to a reduction in the planar area of the part 10.

Next, the arrangement and construction state when the above embodiment is actually used will be explained based on FIG. 2.

In the state shown in FIG. 2, the joining member 10 according to this embodiment is installed at an arbitrary location on the outer periphery of the square steel pipe column 18, and the beam 20
It is set to be joined by welding.

In the figure, 18 is a square steel pipe column, 20 is an H-shaped steel beam, and a notch 22 is formed in the vicinity of the connection part of the casing 20 with the square steel pipe column 18 for convenience of welding. 24 is a backing member for welding.

26 is concrete filled in the square steel pipe column 18, and is press-fitted from below the square steel pipe column 18.

Here, the joining member 10 can be installed in the steel pipe column 18 after the concrete 26 is filled in the steel pipe column.

Then, by welding the necessary parts in this state, the square steel pipe column 18. The joining member 10 and the beam 20 are each joined. At this time, each joining of each joining member 10 is as follows.
Since the strength of the joint is very important, full penetration welding is used.

As described above, the above-mentioned embodiment has the effect that the stress generated in the column-beam joint member 1o when an external force is applied to the casing 20 can be uniformly propagated and absorbed.

In addition, since the column-beam joint member 10 is divided into four equal parts,
Even if there are manufacturing errors in each joining member 10 or steel pipe column 18, these are sufficiently absorbed, so the member 10 can always be set in a stable position relative to the steel pipe column 18, and good welding can be performed. It's also effective.

Note that since the cross-sectional shape of the column and beam member 10 is not uniform, it is preferable to manufacture it by casting as described above, but it is also possible to manufacture it by forging.

Further, the steel pipe column used is not limited to a rectangular type, but may be an original type.

[Effects of the Invention] As explained above, according to the present invention, in addition to the advantages of good press-in and filling properties of concrete and the ability to use it in the middle of a seamless continuous column, the present invention has the following advantages: In addition, since the member is divided into a plurality of parts, the construction accuracy is stabilized.

[Brief explanation of the drawing]

Figure 1 is a plan view showing one embodiment of the present invention, Figure 2 (A)
is a front view seen from the direction a-a in Fig. 1, and (B) is a front view seen from the direction a-a in Fig. 1.
FIG. 3, a front view seen from the -b direction, is an explanatory diagram showing the construction state of the embodiment. "Explanation of symbols of main parts" 10... Column beam connection member, 12... Highest part, 14...
・Boundary part, 16...Beam joint part, 18...Steel pipe column, 2
0: Beam, 26: Concrete In each figure, the same reference numerals indicate the same or equivalent parts. Agent Patent Attorney Masatoshi Sato

Claims (2)

[Claims] (1) A column-beam connecting member that connects the steel pipe column and a beam, serving as a ring member surrounding the outer periphery of a steel pipe column whose inside is filled with concrete, such that when combined, the ring member is configured. Consisting of a plurality of divided integrally molded members, the area of each integrally molded member that extends outward from the steel pipe column at a portion other than the joint with the beam is made smaller than the area of the joint with the beam; A column-beam joint member characterized in that each part is formed with a cross-sectional area large enough to sufficiently propagate expected external forces. (2) The beam-column joint member according to claim 1, wherein the beam-column joint member is divided into four equal parts.