JPH04285232A - Column-beam joint part structure - Google Patents

Abstract

PURPOSE:To positively secure the strength of a joint part and facilitate jointing work through dispensing with the cutting of a column and reducing welding quantity. CONSTITUTION:Welding is performed from the surface of a square steel pipe column 2 using slits 5 so as to perform the disposition of joint reinforcing fittings 8 into the respective corner angle parts in the square steel pipe column 2 easily without cutting the square steel pipe column 2. The reinforcing fittings 8 are also disposed in the positions with which the upper and lower flanges 4 of steel framed beams 3 are brought into contact, so that stress transmission to the reinforcing fittings 8 is performed positively to secure the strength of a column-beam joint part 1. In addition, welding work is performed only at the time of welding the reinforcing fittings 8 to the square steel pipe column 2 at the slit 5 parts so as to reduce the welding work and thereby to facilitate the joining construction between the square steel pipe column 2 and the steel framed beams 3.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] This invention provides a column-beam joint structure in which stress transmission at the joint between a square steel pipe column and a steel frame beam is achieved through reinforcing metal fittings installed inside the column. It is related to.

0002

[Prior Art] Conventionally, this type of column-beam joint structure includes:
In order to transmit stress at the joint between a square steel pipe column and a steel beam, it is generally known that a square steel pipe column is provided with a diaphragm for reinforcing the joint, which is disposed inside the square steel pipe column.

This diaphragm installation method involves cutting a square steel pipe column at the upper and lower flange positions of the steel beam that passes through the joint, and joining the diaphragm to the end face of the cut square steel pipe column to create a through diaphragm. method and
The inner diaphragm method is used, in which a square steel pipe column is cut at the web position of the steel beam, and diaphragms are placed inside the square steel pipe column at positions that correspond to the upper and lower flanges of the steel beam.

[0004] Apart from this column cutting type, there is also an outer diaphragm method in which a diaphragm is disposed at the steel beam joining position on the outer peripheral surface of the square steel tube column without cutting the square steel tube column.

[0005]

[Problems to be Solved by the Invention] However, in the first two methods described above, the square steel pipe column that has been cut for joining the diaphragm must be welded again after the diaphragm is installed. Therefore, not only does it take time and effort to manufacture the joints between the columns and beams, but it also becomes difficult to ensure the accuracy of the square steel pipe columns.

[0006] Furthermore, in the latter case, a large amount of welding is required when disposing the diaphragm on the outer circumferential surface of the rectangular steel pipe column, making the process time-consuming and troublesome.

[0007] In this way, in the conventional column-beam joint structure,
The reality is that both have production weaknesses.

[0008] This invention was devised in view of the above-mentioned circumstances, and its purpose is to eliminate the need for cutting columns, reduce the amount of welding, and perform joining work without reducing strength. The object of the present invention is to provide a column-beam joint structure that can be easily performed.

[0009]

[Means for Solving the Problems] The joint structure between a square steel pipe column and a steel frame beam of the present invention has a slit that is bored at a position on the outer peripheral surface of the square steel pipe column where the upper and lower flanges of the steel frame beam come into contact. At each slit position, a threaded part is formed into which a screw that penetrates the square steel pipe column is screwed together for temporary fixing, and the slit is welded from the surface of the square steel pipe column to form a square shape. and reinforcing metal fittings arranged at each corner of the steel pipe column.

[0010] By welding the surface of the square steel pipe column using slits, reinforcing metal fittings for reinforcing the joint can be installed at each corner of the square steel pipe column. To easily perform the process without cutting a steel pipe column 2.

[0011] Furthermore, by arranging the reinforcing metal fittings at the positions where the upper and lower flanges of the steel beam come into contact, stress can be reliably transmitted to the reinforcing metal fittings, thereby ensuring the strength of the column-beam joint. .

Furthermore, by reducing the welding work to only welding the reinforcing metal fittings to the square steel pipe column at the slits, it is possible to easily join the square steel pipe column and the steel frame beam. be.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A column-beam joint structure according to the present invention will be explained below with reference to an illustrative embodiment.

A column-beam joint structure 1 (see FIGS. 1 and 2) that connects a square steel pipe column 2 and a steel beam 3 is such that the upper and lower flanges 4 of the steel beam 3 on the outer peripheral surface of the square steel pipe column 2 are connected to each other. The slits 5 are drilled at abutting positions, and the threaded portions 7 into which the screws 6 passing through the square steel pipe column 2 are screwed together for temporary fixing at the positions of the slits 5 are formed. The reinforcing metal fittings 8 are welded from the surface of the square steel pipe column 2 by a welding process and are disposed at each corner of the square steel pipe column 2.

[0015] In this embodiment, the reinforcing metal fittings 8 (Fig. 3
and FIG. 4) is formed with a threaded part 7 into which a screw 6 is threaded, and is approximately L
It consists of a letter-shaped abutment plate 8a, a substantially triangular reinforcing plate 8b provided on the abutment plate 8a, and a protrusion 8c protruding from the abutment plate 8a along an L-shape. ing.

Furthermore, one slit 5 is provided at each corner of the square steel pipe column 2 as shown in FIG. The reinforcing metal fittings 8 are formed to be used exclusively for each reinforcing metal fitting 8.

Furthermore, the reinforcing metal fitting 8 is welded to the square steel pipe column 2 using the slit 5, as shown in FIG.
A protrusion 8c is inserted, and the protrusion 8c and the slit 5 are welded together.

The welded state of this reinforcing metal fitting 8 is shown in FIG.
As shown in the figure, the slit 5 of the square steel pipe column 2 and the contact plate 8a may be welded together without providing the protrusion 8c.

To join the square steel pipe column 2 and the steel beam 3 in the column-beam joint structure 1 having such a configuration, first, slits 5 are bored at the positions where the upper and lower flanges 4 of the steel beam 3 come into contact. The reinforcing metal fitting 8 is supported at the position where the slit 5 is formed by attaching and inserting it from the end of the square steel pipe column 2 to the tip of a reinforcing bar or the like (not shown) by spot welding or adhesive.

Next, the reinforcing metal fitting 8 inserted into the square steel pipe column 2 has its protrusion 8c inserted into the slit 5, and the screw 6 is inserted into the threaded part 7 from the surface of the square steel pipe column 2. Temporarily fasten by screwing together. For this temporary fixing, spot welding of the reinforcing metal fitting 8 and the square steel pipe column 2 may be considered. Then, by welding the protrusion 8c and the slit 5 from the surface of the square steel pipe column 2 and welding the square steel pipe column 2 and the reinforcing metal fittings 8, the corner part of the square steel pipe column 2 is provided with reinforcement. A metal fitting 8 is arranged.

Note that when welding the protrusion 8c and the slit 5, the abutment plate 8a of the reinforcing metal fitting 8 serves as a backing for welding. Moreover, the contact plate 8a of this reinforcing metal fitting 8 is
In the case of a steel pipe concrete column, the steel pipe column 2 and reinforcing metal fittings 8
It is possible to improve the punching shear strength at the joint with the steel. Further, temporarily fixing the reinforcing metal fitting 8 to the square steel pipe column 2 with the screws 6 is easier to handle than temporary welding, and there is no need to worry about defects in the welded portion due to spot welding.

Next, the upper and lower flanges 4 are brought into contact with the positions of the slits 5 into which the protrusions 8c of each reinforcing metal fitting 8 have been inserted, and welded to the square steel pipe column 2 of the steel beam 3.
The joining work is completed.

With these features, according to the column/beam joint structure 1 of the present invention, the column/beam joint structure 1 can be used to connect the column/beam without cutting the square steel pipe column 2.
Beam joints can be formed. Therefore, the joining accuracy is improved compared to the conventional column-beam joint, and the labor of joining work can be reduced. Further, the strength of the column-beam joint can be ensured by the reinforcing metal fittings 6, which are disposed at the abutting positions of the upper and lower flanges 4 on the steel beam 3 to ensure stress transmission.

In the above embodiment, the upper flange 4 of the steel beam 3 is joined, but the lower flange 4 is also joined in the same manner.

FIGS. 8 and 9 show another embodiment of the column-beam joint structure 1 of the present invention.

[0026] Here, the reinforcing metal fittings 8 (FIGS. 10 and 1
1) is provided with contact plates 8a at both ends that contact the inner surface of the square steel pipe column 2, and a reinforcing plate 8b provided so as to span the inner surface of the corner portion of the square steel pipe column 2; A protrusion 8 protruding from the contact plate 8a
It consists of c. Note that, similarly to the reinforcing metal fitting 8 described above, a case may also be considered in which the protrusion 8c is not provided.

The slit 5 (see FIG. 12) is provided with two reinforcing fittings so that the reinforcing fittings 8 shown in FIG. 8
It is formed at the center of the outer peripheral surface of the square steel pipe column 2 for use.

[0028] Here, the square steel pipe column 2 of the reinforcing metal fitting 8
The welding using the slit 5 is performed in the state shown in FIGS. 5 and 6 of the above-described embodiment.

[0029] From the above, the contact plate 8a
When used as a backing metal in welding between the steel pipe column 2 and the reinforcing metal fitting 8, the punching shear strength is improved at the joint between the steel pipe column 2 and the reinforcing metal fitting 8 in the above-mentioned steel pipe concrete structure. Note that when the abutting plate 8a is simply used as a backing metal, a plate with the thickness necessary for the backing metal is used as the reinforcing plate 8b.
It is also possible to tack weld the parts.

[0030]

[Effects of the invention] By welding the surface of the square steel pipe column using slits, reinforcing metal fittings for reinforcing joints can be placed inside the square steel pipe column by cutting the square steel pipe column. This can be done easily without having to do anything. Therefore, the joining accuracy in the joining structure can be improved.

Furthermore, by arranging the reinforcing fittings within the square steel pipe column at the positions where the upper and lower flanges of the steel beam come into contact, stress can be reliably transmitted to the reinforcing fittings. Therefore, high strength of the column-beam joint can be ensured.

Furthermore, since the welding work can be reduced to just welding the reinforcing metal fittings in the slit, it is possible to easily join the square steel pipe column and the steel beam.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a column-beam joint structure of the present invention.

FIG. 2 is a partial sectional view taken along line AA in FIG. 1;

FIG. 3 is a plan view showing reinforcing metal fittings in the column-beam joint structure of the present invention.

FIG. 4 is a view taken along line BB in FIG. 3;

FIG. 5 is a perspective view showing a steel column in the column-beam joint structure of the present invention.

FIG. 6 is a partial schematic sectional view showing a state of welding between a reinforcing metal fitting and a slit of a square steel pipe column in the column-beam joint structure of the present invention.

FIG. 7 is a partial schematic sectional view showing another aspect of the welded state of the reinforcing metal fittings and the slits of the square steel pipe column.

FIG. 8 is a sectional view showing another embodiment of the column-beam joint structure of the present invention.

9 is a partial sectional view taken along the line CC in FIG. 8; FIG.

10 is a plan view showing reinforcing metal fittings of the column-beam joint structure in FIG. 8; FIG.

FIG. 11 is a view taken along line DD in FIG. 10;

12 is a perspective view showing a steel column of the column-beam joint structure in FIG. 8; FIG.

[Explanation of symbols]

1... Column/beam joint structure, 2... Square steel pipe column, 3... Steel frame beam, 4... Upper and lower flanges, 5... Slit, 6... Screw, 7... Threaded part, 8... Reinforcement fittings, 8a... Contact Plate, 8b...Reinforcement plate, 8c...Protrusion.

Claims (1)

[Claims] 1. A joint structure formed by joining a square steel pipe column and a steel frame beam, and the joint structure is formed by connecting a square steel pipe column and a steel frame beam, and the joint is bored at a position where the upper and lower flanges of the steel frame beam abut on the outer peripheral surface of the square steel pipe column. The slits are formed at each slit position, and threaded parts are formed in which the screws passing through the square steel pipe column are screwed together for temporary fixing at each slit position. A column-beam joint structure characterized by comprising reinforcing metal fittings that are welded and placed at each corner of a square steel pipe column.