JP2020133123A - Joint structure of column and beam - Google Patents

Abstract

To provide a joint structure of column and beam which facilitates processing and construction.SOLUTION: A joint structure of a column and a beam joins end parts (1a, 1b) of an H-steel column 1 with an upper flange 22A or a lower flange 22B of a beam material 2. Here, the H-steel column 1 is the H-shaped steel in which an end part and the lateral side are open. Then, the joint structure includes: an end plate 3 which closes the end part and in which a bolt hole is bored; a side surface plate 4 for closing the lateral side adjacent to the end plate; and a reinforcement plate 5 interposed between the end plate and the side surface plate and a web 11 of the H-shaped steel and joined to each of them. With this constitution, by a bolt inserted in the bolt hole exposed in a space partitioned by the reinforcement plate, a column material and the beam material are joined.SELECTED DRAWING: Figure 1

Description

The present invention relates to a column-beam joint structure in which an end portion of a column material is joined to an upper surface or a lower surface of a beam material.

Steel-framed buildings that use shaped steel such as H-shaped steel and channel steel for the pillars and beams that form the framework of the building are known (see Patent Document 1 and the like). Patent Document 1 discloses a beam-winning joint in which an end surface of a column member is brought into contact with the upper surface and the lower surface of the beam member.

Specifically, the lower end surface of the column material formed of the H-shaped steel is placed on, for example, the upper surface of the beam material formed of the H-shaped steel, and the column material is joined to the beam material by high-strength bolts. Here, a reinforcing member is arranged so as to hang the upper and lower flanges of the beam material at the portion where the column material of the beam material is joined.

Further, an L-shaped plate for reinforcement is attached to the pillar material at a position where the high-strength bolt is fastened. The L-shaped plate is attached so that an elongated cavity is formed at the corner between the flange of the pillar material and the web.

The high-strength bolt is inserted from the cavity surrounded by the L-shaped plate, the flange, and the web toward the bolt hole of the flange of the beam material, and the tip of the high-strength bolt protruding from the bolt hole toward the web side of the beam material. A nut is attached to. The arrangement relationship between the bolt head and the nut may be reversed.

Japanese Unexamined Patent Publication No. 2004-11217

However, the rectangular parallelepiped cavity surrounded by the L-shaped plate, the flange, and the web is elongated and cannot be touched by workers, so it is necessary to insert high-strength bolts using a special jig to fasten. It takes time and effort to construct.

In addition, the installation work of the L-shaped plate must be performed at four locations on the left and right and both sides of the web, and complicated welding work using fine parts manufactured by bending the steel plate increases, and processing and welding are required. It takes time and effort.

Therefore, an object of the present invention is to provide a column-beam joint structure that enables easy processing and construction.

In order to achieve the above object, the column-beam joint structure of the present invention is a column-beam joint structure in which the end portion of the column material is joined to the upper surface or the lower surface of the beam material, and the column material is an end. An end plate which is a shaped steel whose part and side are open and which closes the end portion and has a bolt hole, a side plate which closes the side side adjacent to the end plate, and the end plate and the above. It is provided with a reinforcing plate interposed between the side plate and the web of the shaped steel and joined to each other, and the pillar material is provided with a bolt inserted into the bolt hole exposed in the space partitioned by the reinforcing plate. It is characterized in that it is joined to the beam material.

Here, the shaped steel can be made of H-shaped steel. Further, the end plate may be configured so that one piece can be attached across the web of the H-shaped steel. Further, the reinforcing plates may be configured such that a plurality of reinforcing plates are arranged substantially in parallel at intervals.

In the column-beam joint structure of the present invention configured in this way, the end plate is arranged so as to close the end portion of the column material, and the side plate is arranged so as to close the side of the column material. Such an end plate and a side plate can be arranged with less welding work as compared with the case where the L-shaped plate is arranged at each corner.

In addition, since the space surrounded by the side plate and the web of shaped steel is only partitioned by a reinforcing plate, a large space can be secured around the bolt holes, making it easier to attach bolts and speeding up joining work such as bolt fastening. You will be able to do it.

Further, if the shaped steel is H-shaped steel and the end plate can be made into one piece straddling the web, the number of parts and the joining work can be reduced, and the construction can be performed more quickly.

Furthermore, when a plurality of reinforcing plates are arranged substantially parallel to each other at intervals, the thickness of the reinforcing plates and the thickness of the side plates can be reduced, which makes it easier to process or obtain. The material can be used, and it is excellent in workability.

It is a perspective view explaining the structure of the joint structure of a column and a beam of this embodiment. It is a figure explaining the structure of the H steel column, (a) is the view which looked at the web surface in front, and (b) is the figure which looked at the flange surface in front. It is a figure explaining the structure of the end part of the H steel column, (a) is the end view seen in the direction of arrow AA of FIG. 2 (a), (b) is B- of FIG. 2 (a). It is a cross-sectional view seen in the direction of arrow B. It is a figure explaining the structure of the end part of the H steel column, (a) is the sectional view seen in the direction of CC arrow of FIG. 3 (a), (b) is D- of FIG. 3 (a). D It is a cross-sectional view seen in the direction of the arrow. It is a perspective view explaining the structure of the end part of the H steel column in an enlarged manner. It is a perspective view explaining the structure of the joint structure of the column and the beam of Example 1. FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view for explaining the structure of a joint structure of columns and beams according to the present embodiment, and FIGS. 2 to 5 are views for explaining the structure of an H steel column 1 as a column material.

A building provided with such a joint structure of columns and beams is a steel-framed building in which a framework structure is formed of shaped steel such as H-shaped steel and channel steel. This building is assembled by abutting and joining the end faces of the column members to the upper and lower surfaces of the horizontally stretched beam members.

In the following, a case where the H steel column 1 formed of the H-shaped steel is used as the column material and the H-shaped steel is also used as the beam material 2 will be described. That is, the lower flange 22B, which is the lower surface of the beam member 2, is brought into contact with the upper end 1b of the H steel column 1, and the lower end 1a of the H steel column 1 is placed on the upper flange 22A, which is the upper surface of the beam member 2.

As shown in FIG. 1, the beam member 2 is formed in a substantially H-shaped cross section in which an upper flange 22A and a lower flange 22B arranged substantially horizontally and parallel to each other are connected by a web 21. The H steel column 1 on the lower floor and the H steel column 1 on the upper floor are attached to the beam member 2 so that their axial directions coincide with each other.

Therefore, a beam reinforcing portion 23 is provided at the intersection of the upper and lower H steel columns 1, 1 and the beam member 2. The beam reinforcing portion 23 is attached so as to bridge the upper flange 22A and the lower flange 22B. That is, by interposing the beam reinforcing portion 23 between the upper flange 22A and the lower flange 22B, it becomes possible to withstand the vertical load acting from the H steel column 1 on the upper floor, and the H steel column on the lower floor. You will be able to counter the reaction force that acts from 1.

The beam reinforcing portion 23 is welded to the lower surface of the upper flange 22A, the side surface of the web 21, and the upper surface of the lower flange 22B, respectively. Further, the beam reinforcing portion 23 is provided so as to surround a portion to be joined by a bolt 6 such as a high-strength bolt.

Further, a bearing plate 62 is interposed between the head of the bolt 6 or the nut 61 and the upper flange 22A or the lower flange 22B at the joint portion by the bolt 6 sandwiched between the beam reinforcing portions 23 and 23.

The H steel column 1 is formed in a substantially H-shaped cross section in which the flanges 12 and 12 arranged substantially vertically in parallel are connected by a web 11. The lower end 1a and the upper end 1b, which are the ends of the H steel column 1, are reinforced for joining with bolts 6.

FIG. 2 is a view showing the H steel column 1 sideways, with the left end of the drawing being the lower end 1a side and the right end being the upper end 1b side. Further, FIG. 2A is a view of the web 11 as a front view, and FIG. 2B is a view of the flange 12 as a front view.

The H steel column 1 is formed to have a length similar to the floor height of each floor, and is joined to the lower end 1a side joined to the beam material 2 on the foundation or the lower floor and to the beam material 2 or the roof beam on the upper floor. Reinforcing portions are provided on the upper end 1b side, respectively.

FIG. 3 is a diagram for explaining the configuration of the end portions (1a, 1b) of the H steel column 1, and FIG. 3 (a) is an end face viewed in the direction of arrow AA of FIG. 2 (a). FIG. 3 (b) is a cross-sectional view taken in the direction of arrow BB of FIG. 2 (a).

Reinforcing portions provided at the ends (1a, 1b) of the H steel column 1 include an end plate 3 that closes the end, a side plate 4 that closes the side of the H steel column 1 adjacent to the end plate 3, and an end. It is mainly composed of a reinforcing plate 5 interposed between the plate 3, the side plate 4 and the web 11 and joined to each other.

Specifically, the open end of the H steel column 1 is closed by one substantially rectangular end plate 3 in plan view. The short side of the end plate 3 has the same length as the width of the flange 12 so that the outer shape is the same as the outer edge of the end face of the H steel column 1, and the long side is the height of the web 11 and the thickness of the flange 2. It is formed of a substantially rectangular steel plate whose length is doubled.

4 (a) is a cross-sectional view taken in the direction of the arrow CC of FIG. 3 (a), and FIG. 4 (b) is a cross-sectional view taken in the direction of the arrow DD of FIG. 3 (a). .. As shown in these figures, the end plate 3 is formed of a thick steel plate (for example, a plate thickness of about 15-25 mm).

Further, the end plate 3 is provided with a notch 31 at a position where it interferes with the edge of the flange 12 of the H steel column 1. Then, the edge of the flange 12 and the notch 31 are joined by complete penetration welding in order to increase the joining strength.

Further, as shown in FIG. 4B, a groove 33 for accommodating the edge of the web 11 is formed in the center of the surface of the end plate 3 on the H steel column 1 side. Then, the end plate 3 and the web 11 are joined by fillet welding at the position of the groove 33.

The end plate 3 is drilled with a bolt hole 32 for passing a high-strength bolt. For example, bolt holes 32 are drilled at four positions adjacent to the flanges 12 on both sides of the web 11 of the H steel column 1 (see FIGS. 3 and 5).

On the other hand, as shown in FIG. 5, the side plate 4 is attached so as to close the open side of the end portion (1a, 1b) of the H steel column 1. The side plate 4 is formed of a substantially rectangular steel plate and is arranged so as to be substantially parallel to the web 11.

Both side edges of the side plate 4 are brought into contact with the inner side surfaces of the flanges 12 and 12 of the H steel column 1 and welded together. Further, the lower edge of the side plate 4 (the upper edge at the upper end 1b) is welded to the upper surface (or lower surface) of the end plate 3 of the H steel column 1.

The rectangular parallelepiped space surrounded by the side plate 4, the flanges 12, 12, and the web 11 is partitioned by the reinforcing plate 5. The reinforcing plate 5 is formed of a rectangular steel plate, and is arranged substantially parallel to the flanges 12, 12 in the center of the reinforcing plate 5.

In short, the reinforcing plate 5 is arranged so as to be substantially orthogonal to the web 11 and the side plate 4, and the upper end surfaces (or lower end surfaces) of the reinforcing plate 5 and the side plate 4 having the same height are substantially flush with each other. Be done. Further, in the reinforcing plate 5, both side edges and the lower edge (or upper edge) are welded to the side plate 4, the web 11, and the end plate 3.

By arranging the side plate 4 and the reinforcing plate 5 in this way, four spaces partitioned by the flanges 12, 12, the web 11, the side plate 4, and the reinforcing plate 5 are formed, and each compartment is divided into four spaces. The bolt hole 32 of the end plate 3 will be exposed.

Each of the sections in which the bolt holes 32 are arranged has a space large enough for workers to access. Further, since the deformation is suppressed by the restraint by the side plate 4 and the reinforcing plate 5, the reinforcing portion has an increased rigidity of the H steel column 1.

Then, as shown in FIG. 1, bolts 6, ... Are inserted into these bolt holes 32, ..., And bolts are joined by the bolts 6 and nuts 61, respectively. For example, at the upper end 1b of the H steel column 1, the bolt 6 is inserted upward from the space partitioned by the side plate 4 and the reinforcing plate 5, and the bolt hole 32 of the end plate 3 and the lower flange 22B of the beam member 2 are inserted. The nut 61 is screwed to the tip of the bolt 6 protruding between the beam reinforcing portions 23 and 23 through the bolt hole and the bolt hole of the bearing plate 62.

On the other hand, the bolt 6 is inserted upward from between the beam reinforcing portions 23 and 23 into the lower end 1a of the H steel column 1, the bolt hole of the bearing plate 62, the bolt hole of the upper flange 22A of the beam material 2, and the end plate. The nut 61 is screwed to the tip of the bolt 6 protruding into the space defined by the side plate 4, the reinforcing plate 5, or the like through the bolt hole 32 of 3.

The bolt 6 and nut 61 fastening work can be performed quickly because an easily accessible space is secured both on the inner side of the beam member 2 and on the end portions (1a, 1b) side of the H steel column 1. Fastening work can be performed.

Next, the action of the column-beam joint structure of the present embodiment will be described.
In the column-beam joint structure of the present embodiment configured in this way, the end plate 3 is arranged so as to close the ends (1a, 1b) of the H steel column 1, and the side of the H steel column 1 is arranged. The side plate 4 is arranged so as to close the.

The end plate 3 and the side plate 4 are rectangular steel plates, and can block the release of the ends (1a, 1b) of the H steel column 1 and the lateral release between the flanges 12 and 12 at the same time. Compared with the case where the L-shaped plates of the above are arranged at the corners, the number of fine welding points is reduced, and the L-shaped plates can be arranged with less welding work. In addition, there is no need to bend the steel plate to process it into an L-shaped plate.

In particular, if the end face of the H steel column 1 is closed by one end plate 3 straddling the web 11, the number of parts and the joining work are reduced as compared with the case of using a plurality of end plates, and the speed is faster. You will be able to carry out construction.

Further, since the space surrounded by the side plate 4 and the web 11 and the flanges 12 and 12 of the H steel column 1 is only partitioned by the reinforcing plate 5, a wide space can be secured around the bolt hole 32, and the bolt 6 can be attached. This makes it easier to perform joining work such as bolt fastening.

Hereinafter, Example 1 of an embodiment different from the above-described embodiment will be described with reference to FIG. The same or equivalent parts as those described in the above-described embodiment will be described with the same terms or the same reference numerals.

In the column-beam joint structure of the first embodiment, a plurality of reinforcing plates 5A and 5A are arranged in a space surrounded by the side plate 4A and the web 11 and flanges 12 and 12 of the H steel column 1. The reinforcing plate 5A is formed of a rectangular steel plate and is arranged substantially parallel to the flanges 12 and 12 at intervals.

When a plurality of reinforcing plates 5A, 5A are arranged at the ends (1a, 1b) of the H steel column 1, the rigidity of the reinforcing portion of the H steel column 1 can be increased. Conversely, even when the thickness of the side plate 4A and the reinforcing plates 5A and 5A is reduced, the same rigidity as the combination of the side plate 4 and one reinforcing plate 5 can be secured.

In the column-beam joint structure of the first embodiment configured in this way, since a plurality of reinforcing plates 5A and 5A are arranged substantially in parallel at intervals, the thickness of the reinforcing plates 5A and the thickness of the side plates 4A Will be able to be thinned.

When the thickness of the reinforcing plate 5A and the side plate 4A becomes thin, it becomes easier to process and materials that are easily available can be used, so that it can be said that the workability is excellent.
Since other configurations and actions and effects are substantially the same as those of the above-described embodiment, description thereof will be omitted.

Although the embodiments and examples of the present invention have been described in detail with reference to the drawings, the specific configuration is not limited to the embodiments and the first embodiment and does not deviate from the gist of the present invention. Design changes are included in the present invention.

For example, in the above-described embodiment, the H steel column 1 has been described as an example of the column material, but the present invention is not limited to this, and the present invention can be used even when channel steel or I-shaped steel is used as the column material. A column-beam joint structure can be applied.

Further, in the above-described embodiment, the configuration in which the end portions (1a, 1b) of the H steel column 1 are closed by one end plate 3 has been described, but the present invention is not limited to this, and the web of the H steel column 1 is not limited thereto. End plates can be arranged on both sides of the eleven.

1: H steel column (column material)
1a: Lower end (end)
1b: Upper end (end)
11: Web 2: Beam material 22A: Upper flange (upper surface)
22B: Lower flange (lower surface)
3: End plate 32: Bolt holes 4, 4A: Side plates 5, 5A: Reinforcing plate 6: Bolts

Claims (4)

A column-beam joint structure that joins the ends of columns to the upper or lower surface of the beam.
The pillar material is a shaped steel with open ends and sides.
An end plate that closes the end and has a bolt hole,
A side plate adjacent to the end plate that closes the side and
It is provided with a reinforcing plate interposed between the end plate, the side plate, and the web of the shaped steel and joined to each other.
A column-beam joining structure, characterized in that the column member and the beam member are joined by a bolt inserted into the bolt hole exposed in a space partitioned by the reinforcing plate. The joint structure of a column and a beam according to claim 1, wherein the shaped steel is an H-shaped steel. The column-beam joint structure according to claim 2, wherein one end plate is attached across the web of the H-shaped steel. The column-beam joint structure according to any one of claims 1 to 3, wherein a plurality of the reinforcing plates are arranged substantially in parallel at intervals.