JPH111963A - Column-beam joint structure and joints, columns, and unit buildings - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a column-beam joint structure and a joint fitting with high joint strength and high joint accuracy, a column, and a unit building suitable for use in a snowy area or a large space. That is. SOLUTION: In the present invention, in a joint structure in which a column 2 and a beam 3 are joined, a butt portion 11 of a joint fitting 1 that abuts on the column 2 matches a shape of the column 2 including a curved column corner 21. It is made into a shape.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a column-to-column joint, a column, and a unit building for connecting a column to a beam.

[0002]

2. Description of the Related Art Conventionally, joints between pillars and beams of a building are usually
As shown in FIG. 12, the joint 1S is attached to the column 2 by abutting it, and a beam is attached to the joint 1S.
Further, there is known a joining metal fitting provided with an insertion hole for inserting a pillar (see Japanese Patent Application Laid-Open No. 4-326139).

[0003]

However, in the above-mentioned conventional joint of a column and a beam, when a three-story building or a building for a snowy area is used, a thick-walled square pillar is used for the pillar. This column corner 21 is a curved surface having a large radius of curvature. For this reason, as shown in FIG.
When S is used, there is a problem that a large gap G is formed between the column corner 21 and the butted portion 11S of the joint fitting 1S, and the dimensions of the butted portion 11S that can be welded are insufficient, so that the joint strength by welding or the like cannot be sufficiently secured. is there.

[0004] Further, when the joint fitting with an insertion hole described in the above-mentioned publication is used, a gap is formed at the corner of the joint fitting with the corner of the column. .

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a beam-column joint structure, a joint fitting, and a column having high joint strength and joint accuracy. Another object of the present invention is to provide a unit building suitable for a snowy area or a large space.

[0006]

According to a first aspect of the present invention, in a beam-column joint structure in which a beam is joined to a column, a beam-side butted portion to be abutted with the column includes a curved column corner. The shape matches the shape of the pillar.

According to a second aspect of the present invention, in a beam-to-column joint structure in which a beam is joined to a column, a portion facing a curved column corner of a beam-side abutting portion to be abutted against the column is a longitudinal portion of the beam. It is deformed from the middle of the direction to the plane portion side facing the beam of the column and brought closer to the column corner.

According to a third aspect of the present invention, in the joint structure of the first aspect, the pillar is formed of a square tube having a thickness of 7 to 11 mm.

According to a fourth aspect of the present invention, in the pillar-to-column joint structure according to any one of the first to third aspects, a plurality of projections are formed at the butting portion on the beam side to be abutted with the column. Is what it is.

According to a fifth aspect of the present invention, there is provided a joint fitting interposed between a column and a beam for joining a beam to a column, wherein an opening is formed in an overlapping portion of the joint fitting overlapped with the outer peripheral surface of the beam. And a butt portion of the joint structure of the column and the beam according to any one of claims 1 to 4.

According to a sixth aspect of the present invention, a pillar has two flat sides sandwiching a corner of a pillar, a contact piece abutting against and abutting on the two sides, and a beam attached to the contact piece. A beam-to-column joint fitting comprising a butting portion of the column-beam joint structure according to any one of claims 1 to 5, comprising a joint piece joined to the column.

According to a seventh aspect of the present invention, in a column having a curved column corner and joined to a beam, welding for filling a gap formed between the curved column corner and a beam-side butt portion. The build-up portion is provided at the curved column corner.

The present invention according to claim 8 has a thickness of 7 to 11 m.
It is a unit building provided with a building unit having columns formed of m square cylinders.

In the joint structure of a column and a beam according to any one of claims 1 to 4, when the beam is directly joined to the column, or when the joint is interposed between the column and the beam with a joint fitting interposed therebetween. Any of them may be used. When the beam is directly joined to the column, the butted portion on the beam side is the tip of the beam.
Further, in the case where the column and the beam are joined with a joining fitting interposed therebetween, the beam-side butt portion is a butt portion of the joining fitting abutted on the column.

(Function) In the joint structure according to the first aspect, the butted portion on the beam side to be abutted against the column is formed into a shape that matches the shape of the column including the curved column corner, and is joined to the column. When the butted portions are joined by welding or the like, the welding length is increased, and high joining strength can be secured. In addition, the positioning accuracy of the columns and beams is improved, and the joining accuracy can be increased.

In the joint structure according to the second aspect, the portion of the butted portion on the beam side to be abutted against the column, which faces the curved column corner, is deformed from a midway in the longitudinal direction of the beam to the flat portion facing the beam of the column. Since it is made close to the pillar corner, the gap between the pillar corner and the butted portion is reduced, and when welding is performed, welding length is increased, and high bonding strength can be secured.

[0017] In the joint structure according to the third aspect, the column further comprises:
Since it is formed of a square tube having a wall thickness of 7 to 11 mm, it has higher strength than a conventional pillar having a wall thickness of 4.5 to 6 mm. Therefore, when the beam is joined to the thick column having the high strength, the joint structure of the column and the beam has a high joining strength, so that the beam can be matched to the column strength.

In the joint structure according to the fourth aspect, a plurality of protrusions are formed at the butting portion on the beam side to be abutted against the column, so that the joining portion between the pillar and the beam side is formed.
Predetermined intervals are easily and accurately maintained, and reliable butt welding can be performed.

According to the fifth aspect of the present invention, since an opening is further formed in the overlapped portion of the joining metal which is overlapped and joined to the outer peripheral surface of the beam, it is possible to perform welding along the periphery of the opening. In addition, welding between the joint and the beam is facilitated, and at the same time, the welding strength between the beam and the joint is improved, so that welding workability and welding quality are improved.

According to a sixth aspect of the present invention, the column further has two flat sides sandwiching the corner of the column, and a contact piece abutting against and abutting the two sides, and being attached to the contact piece. Since the contact piece is made up of the joining piece to be joined to the beam, the contact piece can be joined to the two side surfaces of the column by spot welding, and the welding operation is facilitated. In addition, since this joint can be made only by bending a plate material, it is easy to manufacture.

In the column according to the present invention, since the weld overlaying portion for filling the gap formed between the curved column corner and the beam-side abutting portion is provided at the curved column corner, When this column and the butted portion of the joining fitting are joined by welding or the like, the welding length becomes long, and high joining strength can be secured.

The unit building according to claim 8 has a thickness of 7 to
As we use pillar made of 11mm square tube,
It is suitable for a building unit on the first floor of a three-story unit building, a building unit for a snowy unit building, and a building unit for forming a large space.

[0023]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an embodiment (first embodiment) of the present invention. FIG. 1A is a perspective view of a joint fitting, and FIG. is there. FIG. 2 is another embodiment (second embodiment) of the present invention, and is a perspective view of a joint, FIG. 3 is an exploded view of a plate before bending of the joint of FIG. 2, and FIG. 4 is a framework of a building unit. It is a perspective view of a structure.

FIGS. 5 and 6 show another embodiment (third embodiment) of the present invention. FIG. 5 (a) is a perspective view of a joining fitting, and (b) is (a). FIG. 6 is a perspective view showing a modified example of the joining metal fitting, and FIG. 6 is a perspective view showing a use state of the joining metal fitting shown in FIG.

FIGS. 7 to 9 show another embodiment of the present invention (fourth embodiment).
7) (a) is a front view of a pillar, (b)
The figure is a cross-sectional view taken along the line XX of the figure (a), the figure (a) is a cross-sectional view showing an enlarged column corner before finishing, and the figure (b) is an enlarged column corner after finishing. FIG. 9 is an explanatory view showing the use state of the column of FIG. 7 together with the joint fitting.

FIGS. 10 and 11 show another embodiment (fifth embodiment) of the present invention, in which FIG. 10 is an explanatory view showing a joint state between a pillar and a joint, and FIG. 11 is a perspective view of the joint. It is.

(First Embodiment) First, an embodiment of the present invention will be described with reference to FIGS. Reference numeral 1 denotes a column-beam joint fitting, which joins the column 2 to the beams 3 and 4. The column 2 and the beams 3 and 4 constitute a frame structure U of the building unit shown in FIG. 4, and the frame structure U includes four columns 2, 2,. Are assembled in a box shape by four floor beams 3, 3,... Spanning between lower ends of the columns and four ceiling beams 4, 4,. .

The column 2 is a rectangular cylinder formed by rolling a steel plate having a thickness of 9 mm by roll forming or the like.
Reference numeral 1 denotes a curved surface. The floor beam 3 and the ceiling beam 4 are
Each is a section steel having a U-shaped cross section.

The joining fitting 1 is used for joining the column 2 and the floor beam 3 and joining the column 2 and the ceiling beam 4 and is formed of a mold steel having a U-shaped cross section. Are formed in a shape that matches the shape of the column 2 including the column corner 21.

The method of using the joint 1 is as follows: the butting portion 11 of the joint 1 is brought into contact with a predetermined height position (upper end or lower end) of the column 2 and joined by welding, and the beams 3 and 4 are joined. 1 and welded and joined.

In the joint 1 of the present embodiment, the butting portion 11 of the joint 1 to be brought into contact with the column 2 is
Since it is made to match the shape of pillar 1 including
When the butt portions 11 are joined by welding, the welding length increases, and high joining strength can be secured. In addition, the positioning accuracy of the joint 1 is improved, and the joining accuracy can be improved.

In this embodiment, the column 2 has a thickness 9
mm, the thickness is 4.5-6.
It has high strength compared to conventional columns of mm. Therefore, when used by attaching to the column 2 having this high strength, the joining fitting 1 also has a high joining strength, so that it can be made suitable for the column strength.

(Second Embodiment) Next, another embodiment of the present invention will be described with reference to FIGS. Numeral 10 denotes a joint which is used for joining the column 2 and the beams 3 and 4 of the frame structure U of the building unit as in the above embodiment. The joining metal fitting 10 has an abutting piece 15 having a rectangular cross section which abuts and abuts two sides including a corner of the pillar 2, and a joining which is attached to the abutting piece 15 and joined to the beams 3 and 4. Pieces 16 and 16 are provided. The joining piece 16 has a U-shaped cross section, and is provided on both sides of the contact piece 15.

As shown in FIG. 3, the joining fitting 10 is
It is formed by bending a thin steel plate, and symbols a, b, and c are bending lines. First, a steel plate punched into a substantially H shape is bent at a right angle along a bending line a,
The contact piece 15 is formed. Next, it is bent at a right angle along the bending line b, and is bent at a right angle along the bending line c to form a U-shaped cross section, thereby forming the joining piece 16.

The method of using the joint fitting 10 is such that the contact piece 15 of the joint fitting 10 is butted against two sides including the corners of the column 2, and the butted contact piece 15 and the column 2 are joined by spot welding. . Then, the beam 3 is inserted into the joint pieces 16, 16.
Or, 4 is inserted and joined by welding or the like.

In the joint fitting 10 of the present embodiment, the contact piece 15 of the joint fitting 10 which is brought into contact with the column 2 has a pillar 2 including a corner portion.
Since the shape matches the shape of the above, the butted portion has a large area, and a high joining strength can be secured. Further, the positioning accuracy of the joint fitting 10 is improved, and the joining accuracy can be increased.

In addition, the joining fitting 10 has the contact piece 15
Can be joined to the two sides by spot welding, thereby facilitating welding work. In addition, since the joining fitting 10 can be made only by bending a steel plate, it is easy to manufacture.

(Third Embodiment) Another embodiment of the present invention will be described with reference to FIGS. 1A is a joint fitting, and this joint fitting 1A is a modification of the joint fitting 1 shown in the first embodiment, and joins the column 2 and the beams 3, 4 of the frame structure U of the building unit. It is used for Therefore, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 5 (a), the joint 1A differs from the first embodiment in that a plurality of projections 1
This is a place where 2A is formed, and a place where a long hole-shaped opening hole 13A is formed in the overlapped portion of the joint fitting 1A that is overlapped and joined to the outer peripheral surface of the beam 3 (or 4). Instead of the opening 13A, a U-shaped opening 13B may be formed as shown in FIG.

The method of using the joint 1A is as follows. The butt 11A of the joint 1A is brought into contact with a predetermined height position (upper end or lower end) of the column 2 and the projection 12A is brought into contact with the joint 1A. 2 and joined by welding. Next, the beam 3 (or 4) is inserted into the joint 1A, and the opening 1
3A is welded around, and the beam 3 (or 4) is joined to the joint fitting 13.
Join to A.

According to the joining fitting 1A of the present embodiment, the butting portion 11A of the joining fitting 1A, which is brought into contact with the column 2, is
Since the plurality of protrusions 12A are formed, a predetermined distance is easily and accurately maintained between the column 2 and the butt portion 11A of the joint 1A, and reliable butt welding can be performed.

According to the joint 1A of the present embodiment,
Since the opening 13A is formed in the overlapped portion of the joint 1A that is overlapped and joined to the outer peripheral surface of the beam 3 (or 4), when welding is performed along the periphery of the opening 13A, the joint 1A is formed. The welding with the beam 3 (or 4) is facilitated, and at the same time, the welding strength between the beam 3 (or 4) and the joint 1A is improved, and the welding workability and welding quality are improved.

(Fourth Embodiment) FIG. 7 shows another embodiment of the present invention.
This will be described with reference to FIGS. The column 2 of this embodiment has a curved column corner 21 as in the previous embodiment, and is joined to the beam 3 (4) by a joint fitting 1S described later. Pillar 2 above
As shown in FIG. 7, a weld overlay 22 that fills a gap formed between the curved column corner 21 and the butted portion 11S of the joint 1S is provided in the curved column corner 21. ing.

As shown in FIG. 8 (a), the weld overlay 22 is formed by joining the weld overlay 22A (unevenly shaped irregular shape) before finishing as shown in FIG. 8 (b). Hardware 1
S is finished in a shape suitable for joining with the butted portion 11S (the column corner portion 21 having a large radius of curvature is formed by welding overlay to have a small radius of curvature).

The joining fitting 1S of the present embodiment is different from the joining fitting 1 of the first embodiment in that it has a normal specification as shown in FIG. It is something that has been done in a delicate way.

The column 2 of this embodiment has the above-mentioned joining fitting 1 of the normal specification.
When the S is butt-welded and joined, the curved column corner 21
And a weld build-up portion 22 that fills a gap formed between the butting portion 11S of the joint fitting 1S and the curved column corner 2
1, the welding length between the column 2 and the butted portion 11S of the joining fitting 1S is increased, and high joining strength can be secured. Therefore, in the present embodiment, the conventional joint fitting 1S for a thin column can be applied to the thick column 2 as it is.

In the case of using the joint 1 of the first embodiment in which the butted portion 11 has a shape that matches the shape of the column 2 including the column corner 21, the insertion direction of the joint 1 is erroneously changed. When attached, as shown in FIG. 13 (reference diagram), one side of the butting portion 11 of the joining metal fitting 1 is displaced from the column corner 21, and a large gap G is generated between the butting portion 11 and the column 2, and an appropriate In some cases, welding cannot be performed. On the other hand, according to the pillar 2 of the present embodiment, the joining fitting 1
Since the butting portion 11S of S is made flat,
A large gap G does not occur.

(Fifth Embodiment) FIG. 1 shows another embodiment of the present invention.
This will be described with reference to FIGS. As shown in the figure, the column-to-column joint 1C of the present embodiment is such that a portion 12C of the butting portion 11C of the joint 1C, which is brought into contact with the column 2, faces the curved column-corner 21. It is drawn in the direction and is brought close to the column corner 21.

According to the joining fitting 1C of the present embodiment, the butting portion 11C of the joining fitting 1C butted against the column 2
The portion 12C facing the curved column corner 21 is drawn toward the flat portion of the column 2 from the middle of the longitudinal direction of the joint fitting 1C and is brought close to the column corner 21.
And the gap G between the butting portions 11C becomes small, and when joining by welding or the like, the welding length becomes long, and high joining strength can be secured.

Although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and even if there is a design change within a scope not departing from the gist of the present invention. Included in the invention. For example, in all of the first to fifth embodiments, the joining fitting has been used for joining the column and beam.
The tip of the beam may be formed in the same shape as the tip of the joint, and the beam may be directly joined to the column.

With the building unit having the thick pillars 2 described above, a three-story building or a unit building of a higher middle and high-rise building is constructed. In addition, a unit building for a snowy area will be constructed. Also, a unit building is constructed using building units for forming a large space. It goes without saying that the joints of the columns and beams are not limited to the corners of the building unit.

[0052]

According to the joint structure of the first aspect, the butted portion on the beam side to be abutted against the column is formed into a shape matching the shape of the column including the curved column corner, and is joined to the column. When the butt portions are joined by welding or the like, the welding length is increased, and high joining strength can be secured. In addition, the positioning accuracy of the columns and beams is improved, and the joining accuracy can be increased.

According to the second aspect of the present invention, the portion of the butted portion on the beam side to be abutted against the column, which faces the curved column corner, is deformed from a midpoint in the longitudinal direction of the beam to the flat portion facing the beam of the column. Since it is made close to the pillar corner, the gap between the pillar corner and the butted portion is reduced, and when welding is performed, welding length is increased, and high bonding strength can be secured.

[0054] In the joint structure according to the third aspect, the column is:
Since it is formed of a square tube having a wall thickness of 7 to 11 mm, it has higher strength than a conventional pillar having a wall thickness of 4.5 to 6 mm. Therefore, when the beam is joined to the thick column having the high strength, the joint structure of the column and the beam has a high joining strength, so that the beam can be matched to the column strength.

In the joint structure according to the fourth aspect, since a plurality of protrusions are formed at the butting portion on the beam side to be abutted with the column, a simple and high height is provided between the butting portion on the beam and the beam side. Predetermined intervals are maintained with high accuracy, and reliable butt welding can be performed.

According to the fifth aspect of the present invention, since an opening is formed in the overlapped portion of the joint which is overlapped and joined to the outer peripheral surface of the beam, when welding is performed along the periphery of the opening, Welding of the joint and the beam is facilitated, and at the same time, the welding strength of the beam and the joint is improved, and welding workability and welding quality are improved.

According to a sixth aspect of the present invention, the pillar has two flat sides sandwiching the corner of the pillar, a contact piece abutting against and abutting the two sides, and a beam attached to the abutment piece. Therefore, the contact piece can be joined to the two side surfaces of the pillar by spot welding, thereby facilitating the welding operation. In addition, since this joint can be made only by bending a plate material, it is easy to manufacture.

In the column according to the seventh aspect, the weld overlaying portion for filling the gap formed between the curved column corner and the beam-side abutting portion is provided at the curved column corner. When this column and the butted portion of the joining fitting are joined by welding or the like, the welding length becomes long, and high joining strength can be secured.

The unit building according to claim 8 has a thickness of 7 to
As we use pillar made of 11mm square tube,
It is suitable for a building unit on the first floor of a three-story unit building, a building unit for a snowy unit building, and a building unit for forming a large space.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an embodiment of the present invention, wherein FIG. 1A is a perspective view of a joint fitting, and FIG.

FIG. 2 is a perspective view of another embodiment of the present invention, showing a joining fitting.

FIG. 3 is an exploded view of a plate material before bending processing of the joining fitting of FIG. 2;

FIG. 4 is a perspective view of a frame structure of a building unit.

FIG. 5 is another embodiment of the present invention, in which FIG. 5A is a perspective view of a joining fitting, and FIG. 5B is a perspective view of a joining fitting showing a modification of FIG.

FIG. 6 is a perspective view showing a use state of the joining fitting of FIG. 5 (a).

7 (a) is a front view of a pillar, and FIG. 7 (b) is a sectional view taken along line XX of FIG. 7 (a). FIG.

FIG. 8A is a cross-sectional view showing an enlarged column corner portion before finishing, and FIG. 8B is a cross-sectional view showing an enlarged column corner portion after finishing.

FIG. 9 is an explanatory view showing a use state of the pillar of FIG. 7 together with a joint fitting.

FIG. 10 is an explanatory view showing another embodiment of the present invention, showing a joint state between a pillar and a joint fitting.

FIG. 11 is a perspective view of a joining fitting.

FIG. 12 is an explanatory view showing a conventional joint state between a pillar and a joint fitting.

FIG. 13 is a reference view showing a state in which the joining fitting of FIG.

[Explanation of symbols]

 1, 10, 1A, 1B, 1C, 1S Joining bracket 2 Pillar 3, 4 Beam 11, 11A, 11B, 11C Butt 12A, 12B Projection 13A, 13B Opening hole 15 Contact piece 16 Joint piece 21 Column corner U Building unit frame structure

Claims (8)

[Claims] In a beam-column joint structure in which a beam is joined to a column, a beam-side butted portion to be abutted against the column is formed into a shape that matches the shape of a column including a curved column corner. Characteristic joint structure of column and beam. 2. A beam-to-column joint structure in which a beam is joined to a column, a portion facing a curved column corner of a beam-side abutting portion that is abutted against the column is connected to the beam of the column from halfway in the longitudinal direction of the beam. A joint structure of a column and a beam, wherein the column and the beam are deformed toward an opposing plane portion and approach a column corner. 3. The beam-column joint structure according to claim 1, wherein the column is formed of a square tube having a wall thickness of 7 to 11 mm. 4. The beam-column joint structure according to claim 1, wherein a plurality of protrusions are formed at a beam-side butting portion where the column is abutted. 5. A beam-to-column joint fitting interposed between a column and a beam and joining the beam to the column, wherein an opening is formed in a superposed portion of the joint that is overlapped and joined to the outer peripheral surface of the beam. Item 1
A joint fitting comprising a butted portion of the joint structure of a column and a beam according to any one of claims 4 to 7. 6. The pillar has two flat sides sandwiching a corner of the pillar,
It consists of a contact piece that abuts and abuts on these two side faces, and a joint piece that is attached to the contact piece and joined to the beam,
A joint fitting comprising a butted portion of the joint structure of a column and a beam according to claim 1. 7. In a column having a curved column corner and joined to a beam, a weld build-up portion filling a gap formed between the curved column corner and a beam-side butt portion has a curved surface. A pillar provided at a corner of the pillar. 8. A unit building having a building unit having a column formed of a square tube having a wall thickness of 7 to 11 mm.