JP2000170250A - Column/beam connecting structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an external diaphragm type column/beam connecting structure capable of connecting a beam without cutting a column for each floor, improving space efficiency in particular, and sharply reducing the machining cost of a steel frame. SOLUTION: When an H-steel beam 12 is to be connected to an erected rectangular steel column 10, inner faces of side plates 16 are closely fitted to the side faces of the column 10, the side end sections 14A of an external diaphragm 14 are vertically butted and connected to the inner faces of the side plates 16 protruded from the column 10, thus the side plates 16 are connected together via the external diaphragm 14. Fixing members 18 are fitted to the side faces of the column 10 at the prescribed intervals, and beams 12 are connected to the end sections of the external diaphragm 14. The outward stretched quantities of the external diaphragm 14 can be sharply reduced, and the column 10 can be arranged near the wall side for application to a corner column, for example.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a column / beam joint structure of a building.

[0002]

2. Description of the Related Art Conventionally, there is a through-diaphragm type as a joint structure of columns and beams in a building. This type is a structure in which a rectangular steel pipe as a pillar is cut at two places for each floor, and a beam is joined by performing a full penetration T-joint with a backing metal with a diaphragm interposed between the cut portions.

[0003] In the outer diaphragm type, a diaphragm is attached to the outside of the column for joining with the beam without cutting the column, and the stress of the beam is transmitted to other beams via the diaphragm. It is supposed to be. According to such an outer diaphragm type, there is an advantage that structural calculation is easy, and there is an advantage that brittle fracture can be naturally avoided because the beam flange of the outer diaphragm is expanded.

[0004]

However, in the case of the through-diaphragm type, the pillar must be cut for each floor, beveled, etc., and then welded at a portion having a large stress. In order to maintain high precision, high welding skill, nondestructive inspection, and the like are required, and the joining work becomes complicated as a whole, and it is difficult to reduce the cost.

[0005] On the other hand, the conventional outer diaphragm type has an advantage that beams can be joined without cutting the columns as described above, but when viewed in plan, a part of the diaphragm is formed by the columns. There is a problem in terms of beauty and fit because it protrudes outwards.Especially, when used for corner pillars of a building, it is necessary to provide a space between the pillar and the wall for the diaphragm. As a result, there is a problem that the pillar must be arranged inside the building, and a dead space is generated between the pillar and the wall.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has an advantage of an outer diaphragm type in which beams can be joined without cutting each floor of the column. Provided is a joint structure of a beam and a column / beam, which requires a small dead space particularly between a wall and a space, is high in space efficiency, and can greatly reduce the cost of steel frame processing. With the goal.

[0007]

The present invention employs the following configuration in order to solve the above problems.

(1) A joint structure of a pillar and a beam, in which a steel beam is joined to a side surface of a pillar made of a hollow steel pipe via an outer diaphragm extending in a horizontal direction, the side surface of the pillar And a fixing member which is joined to each of the outer diaphragm and a side end of the outer diaphragm, and is provided to extend in a vertical direction.

(2) In a column / beam joint structure in which a steel beam is joined to a side surface of a column made of an upright hollow steel pipe via a pair of outer diaphragms extending in a horizontal direction, A fixing member having a pair of side plates, the side plates being attached to two adjacent side surfaces of the column, and a side end of the outer diaphragm being attached to a portion of the side plate protruding from the column. Parts, and a similar fixing member is joined to the column at a predetermined interval with respect to one of the fixing members, and the beam is joined to an end of each of the outer diaphragms. .

(3) In the above item (1) or (2), the side plate is fillet welded or bolted to the column.

(4) In any one of the above items (1) to (3), the fixing member has a groove formed in a U-shaped cross section, and the side end of the outer diaphragm is formed in the groove. It is characterized by being inserted and joined.

(5) In any one of the above items (1) to (4), a vertical reinforcing plate is butt-joined between the outer diaphragm and the column.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is a plan view showing a column / beam joint structure according to an embodiment of the present invention, FIG. 2 is a view of FIG. 1 viewed from a direction A, and FIG. 3 is a view of FIG. FIG.

As shown in FIG. 1, a square steel column 10 has
An H-beam 12 is joined via a diaphragm 14. The outer diaphragms 14, 14 joined to each other at the center portion have a side end 14 </ b> A substantially at the center of a fixing member 18 having hook-shaped side plates 16, 16, shown in FIG. Along the broken line of the side plate 1
The sixth pillar 10 is butt-joined to a portion projecting outside the length of one side of the pillar 10, and straddles between the pillar 10 and the side plate 16.

As shown in FIGS. 1 and 2, the inner surfaces of the side plates 16, 16 are closely bonded to two adjacent side surfaces of the column 10 by a predetermined distance. For this reason, the amount of protrusion from the column 10 only needs to be the thickness of the side plate 16, and the amount of protrusion is small.

The upper and lower ends of the reinforcing plate 20 are vertically butt-joined to the diaphragm 14 and reinforced between the lower surface and the upper surface of the upper and lower outer diaphragms 14 at the center. The end face of the reinforcing plate 20 on the pillar 10 side is butt-joined to the side face of the pillar 10.
The outer diaphragm 14 has a role of transmitting a load applied to the beam 12 to the column 10 and other beams 12 and preventing stress concentration. Although not shown in the present embodiment, if ribs are formed on the back surface of the diaphragm 14 in addition to the reinforcing plate 20, the strength is further improved.

As described above, according to the column / beam joint structure of the present embodiment, when joining the beam 12 to the column 10, the side plates 16, 16 are brought into close contact with the side surfaces of the column 10. I have. Therefore, the thickness of the member such as the diaphragm projecting from the side surface of the pillar 10 is small. For example, as shown in FIG. 5, when the pillar 10 is arranged at the corner of the building, the outer wall 22 and the pillar 10 In the joining structure of the conventional outer diaphragm type, at least the distance L1 is necessary because the outer diaphragm projects, whereas in the present application, only the thickness of the fixing member 18 is required. The distance L2 can be significantly reduced, and the dead space generated between the outer wall 22 and the outer wall 22 can be minimized.
As a result, it is possible to increase the living space of the building and to join the columns and beams while simultaneously taking advantage of the outer diaphragm method such as joining the beams without cutting the columns 10. Become.

In the present embodiment, the side plate 16
Is joined to the pillar 10 by fillet welding, but it is also possible to join using a bolt.

In this embodiment, a pair of side plates 16 and 16 intersect each other at right angles to each other so that
The side plate 16 is attached so as to surround the side surface, but is not limited to this. As shown in FIG. 6, the side plate 16 adheres to a part of the side surface of the pillar 10 without crossing the side plates 16 at right angles. It may be formed in a length.

Further, in the present embodiment, the upper and lower fixing members 18 are mounted on the side surface of the pillar 10 at a predetermined interval. However, the upper and lower fixing members 18 are integrated into one fixing member. The diaphragms may be joined. In addition, as a method of integration, a fixed member that has already been integrated may be used, or the upper and lower fixing members 18 may be connected via a plate material.

Next, a modified example of the column / beam joint structure according to the present invention will be described. Here, the same members as those in the above-described embodiment are denoted by the same reference numerals, and overlapping description will be omitted.

In the above-described embodiment, the fixing member 18 is
In the present embodiment, the fixing member 24 includes the flat plate-shaped side plates 16, 16, as shown in FIGS. 7 to 10.
8 and 28 are used.

As shown in FIG. 10, the side plate 28 has a groove 26 formed in a U-shape, and these side plates 28 are joined at right angles to form the fixing member 2.
4 are formed. The outer diaphragm 1 is provided in the groove 26.
4, the side end 14A is inserted, and as shown in FIG.
Side end 14A is joined to side plate 28 by fillet welding. Further, as in the above-described embodiment, the reinforcing plate 20 is connected between the fixing members 24, 24.

According to this embodiment, the outer diaphragm 1
4 has the advantage that positioning can be easily performed, and enables highly accurate joining of columns and beams. In the embodiments after FIG. 7, the U-shaped groove 26 is used.
Is formed on the fixing member 24, but it is also possible to form the fixing member using square steel without forming the groove 26.

Further, the present embodiment has been described for a case where the present invention is applied to a corner post disposed at a corner of a building. However, the present invention is not limited to this, and as shown in FIG. Of course, it is possible. Also in this case, similarly to the above-described embodiment, the distance from the outer wall can be reduced. Here, the difference from the above-described embodiment is that one flat plate is used as the fixing member 30.

[0027]

As described in detail above, according to the present invention, since the column / beam joining structure using the outer diaphragm is adopted, the beam / column joining can be performed without cutting the column. In addition, it is possible to prevent the column from being inaccurate due to welding, and to greatly reduce the cost required for joining. Also, compared to the conventional joining structure, the beams can be joined with a reduced amount of work such as cutting, beveling, attaching a backing metal, and welding, and the labor required for joining can be greatly reduced.

Further, since the amount of protrusion of the outer diaphragm can be greatly reduced, for example, when the present joint structure is applied to a corner post, a gap generated between the outer diaphragm and the outer wall can be minimized. Since it is possible to dispose the pillars to the outside, living space is not sacrificed.

[Brief description of the drawings]

FIG. 1 is a plan view showing a column / beam joint structure according to an embodiment of the present invention.

FIG. 2 is a diagram of FIG. 1 viewed from an A direction.

FIG. 3 is a diagram of FIG. 1 viewed from a direction B.

FIG. 4 is a schematic perspective view of a fixing member used in the embodiment of FIG.

FIG. 5 is an explanatory diagram showing a comparison between a conventional column / beam joint structure and a column / beam joint structure according to the present embodiment.

FIG. 6 is a plan view showing a column / beam joining structure according to a modification of the embodiment of FIG. 1;

FIG. 7 is a plan view showing a column / beam joint structure according to another embodiment of the present invention.

FIG. 8 is a view of FIG. 6 viewed from a direction C.

FIG. 9 is a view of FIG. 6 viewed from a direction D.

FIG. 10 is a schematic perspective view of a fixing member used in the embodiment of FIG.

FIG. 11 is a sectional view taken along line XI-XI in FIG. 6;

FIG. 12 is a plan view showing an embodiment when the present invention is applied to a side pillar.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Column 12 Beam 14 Outer diaphragm 14A Side end 16 Side plate 18 Fixing member 20 Reinforcement plate 22 Outer wall 24 Fixing member 26 Groove 28 Side plate 30 Fixing member

Claims (5)

[Claims] 1. A column-to-beam joining structure for joining a steel beam to a side surface of an upright hollow steel tube column through an outer diaphragm extending in a horizontal direction, wherein: A joint structure between columns and beams, characterized in that a fixing member is provided to extend between the side ends of the outer diaphragm and to extend in the vertical direction. 2. A column / beam joint structure in which a steel beam is joined to a side surface of an upright hollow steel tube column through a pair of outer diaphragms extending in a horizontal direction. A fixing member having a pair of side plates,
These side plates are attached to two adjacent side surfaces of the column, the side ends of the outer diaphragm are joined to portions of the side plate protruding from the column, and a similar fixing member is fixed to one side. A joint structure between a column and a beam, wherein the beam is joined to an end of each of the outer diaphragms by being joined to the column at a predetermined interval with respect to a member. 3. The column / beam joint structure according to claim 1, wherein the side plate is fillet welded or bolted to the column. 4. The fixing member according to claim 1, wherein the fixing member has a groove having a U-shaped cross section, and a side end of the outer diaphragm is inserted and joined to the groove. Column / beam joint structure described in 1. 5. The column / beam joint structure according to claim 1, wherein a vertical reinforcing plate is butt-joined between the outer diaphragm and the column.