JP4227874B2 - Column and beam joint structure of building unit - Google Patents

Description

  The present invention relates to a joint structure of columns and beams of a building unit constituting a unit building.

Unit buildings are box-shaped, transportable, and internally and externally finished building units and roof units / roof panels manufactured in advance at the factory. In recent years, many panels have been transported to the construction site and assembled at the construction site to form a building that has a short construction period and a standardized building with good dimensional accuracy. It is built.
As a building unit used for this unit building, those having various structures are known.

The most typical building unit has a structure described in Patent Document 1.
That is, four columns standing at the four corners of the rectangular shape, a ceiling beam connecting the upper ends of the four columns along the rectangular sides, and the lower ends of the four columns as rectangular sides It has a skeleton consisting of floor beams connected along, and is installed with a ceiling field edge across the ceiling beam opposite to this skeleton, and a ceiling surface material is attached to the lower surface of this ceiling field edge to form a ceiling. A floor beam is attached to the floor beam, a floor joist is attached on the floor beam, and a floor material is attached on the floor joist to form a floor.

It should be noted that, in a place where the outer wall is provided, a pillar is inserted between the ceiling beam and the floor beam, and an outer wall is formed by attaching an inner wall panel or an outer wall panel to the pillar.
If necessary, install partition wall panels.
In this building unit, a steel square tube is used for a column, and a steel cross-sectional U-shaped long body is used for a beam such as a ceiling beam or a floor beam.

  And as for the joint structure of the column of the building unit and the beam such as the ceiling beam and the floor beam, the beam may be welded directly to the side surface of the column, but when the beam is welded directly to the side surface of the column in this way, Since the mechanical strength is often insufficient, usually, as described in FIG. 3 and FIG. 8 of Patent Document 2, the joint piece is welded in a state of protruding substantially horizontally from the side surface of the column. The beam is welded to the piece.

In addition, as described in Patent Document 3, two plate-like joint pieces (described as brackets) that are substantially parallel to the square cylindrical column protrude substantially horizontally from the side surface of the column. In addition, there is a protrusion that is welded and the web is extended to a beam with a long U-shaped cross section, the flange of the U-shaped beam is welded to the joint piece, and the protrusion that extends the web of the beam is It is known to describe a joint structure between a column and a beam welded to the adjacent side surface.
In such a unit building, in general, since the building unit is manufactured in a factory and transported to a construction site by a truck, the width of the building unit cannot be increased so much.
Moreover, it is preferable that the building unit be as wide as possible because the living area of the unit building can be increased.

Therefore, in order to widen this building unit, the column is erected on the outermost side, and when attaching the beam of this column, the outdoor side surface of the column and the outdoor surface of the beam should be welded on substantially the same plane. Is preferred.
At this time, if the joint structure of the column and beam is a structure in which the joint piece is welded to the column and the beam is welded to the joint piece, the beam is welded to either the inner surface or the outer surface of the joint piece. However, when the beam is welded to the inner side surface of the joint piece, the welded portion between the joint piece and the beam is on the outside, and the beam is easily welded. Therefore, usually, the outer surface of the square cylindrical column and the outer surface of the web of the joint piece are substantially flush with each other, the joint piece is welded to the side surface of the column, and the beam is welded to the inner surface of the joint piece. Yes.

Japanese Examined Patent Publication No. 61-42061 Japanese Patent Laid-Open No. 2002-322741 JP-A-3-262843

However, when the outer surface of the web of the joint piece is welded so that the outer surface of the column is substantially flush with the outer surface of the column in this way, the outer surface of the beam welded to the inner surface of the web is more than the outer surface of the column. There is a problem that only the thickness is on the indoor side, and the living area of the building unit is reduced accordingly.
In addition, when the outer surface of the square cylindrical column and the outer surface of the web of the joint piece are made to be substantially flush with each other, the corners of the column are curved, and the web and the column are not curved. As described in Patent Document 3, it is difficult to completely weld the web of the joint piece to the side surface of the column.

Moreover, when mass-producing a building unit, in order to construct quickly and efficiently, the following system is often adopted.
That is, as shown in FIG. 13, the beam 102 on the wife side (the short side of the rectangular building unit) is welded to the column 101 in advance through the joint piece 103, and at the same time, the beam 101 ( The wife-side structure 100 in which the joint piece 209 for attaching the ceiling beam 202 on the long side of the rectangular building unit) and the joint piece 309 for attaching the floor beam 302 are welded is manufactured.

Further, the ceiling structure 200 in which the ceiling girdle 204 and the ceiling surface material 205 are attached to the girder-side ceiling beam 202, and the floor beam 304, the floor joist 305, and the floor surface material 306 are attached to the girder-side floor beam 302. The floor structure 300 is manufactured.
Then, the ceiling structure 200 and the floor structure 300 are arranged between the two wife-side structures 100, the distance between the two wife-side structures 100 is reduced, and the two The end of the ceiling beam 202 of the ceiling structure 200 and the end of the floor beam 302 of the floor structure 300 are inserted into the joint pieces 209 and 309, and the ceiling beam 202 and the joint piece 209 of the ceiling structure 200 are inserted. In addition, a method of welding the floor beam 302 of the floor structure 300 and the joint piece 309 is performed.

  At this time, in order to facilitate the insertion of the end of the ceiling beam 202 of the ceiling structure 200 and the end of the floor beam 302 of the floor structure 300 into the joint pieces 209 and 309 of the wife side structure 100, The distance between the inner surfaces of the web of the joint piece 209 of the structure 100 is made larger than the distance between the outer surfaces of the webs of the ceiling beams 202 on both sides of the ceiling structure 200, or the joint piece 309 of the wife side structure 100 The distance between the inner side surfaces of the web is slightly larger than the distance between the outer side surfaces of the webs of the floor beams 302 on both sides of the floor structure 300.

As described above, when the end of the ceiling beam 202 of the ceiling structure 200 or the end of the floor beam 302 of the floor structure 300 is inserted into the joint piece 209 or 309 of the wife side structure 100, FIG. As shown in FIG. 14, a gap 400 is generated between the webs of the joint pieces 209 and 309 and the webs of the ceiling beam 202 and the floor beam 302.
When the web of the joint piece 209 of the wife side structure 100 and the web of the ceiling beam 202 of the ceiling structure 200 are welded, and the web of the joint piece 309 and the web of the floor beam 302 of the floor structure 300 are welded. The webs of the joint pieces 209 and 309 of the wife side structure 100 are pressed inward and brought into contact with and welded to the ceiling beams 202 of the ceiling structure 200 and the floor beams 302 of the floor structure 300.

As a result, in the building unit manufactured in this way, a force is exerted to return the web of the pressed joint pieces 209 and 309 to the original state, and as shown in FIG. There is a problem that the floor beam 302 is curved outward or the wife-side beam 102 is curved outward as shown in FIG.
Note that the distance between the upper flange and the lower flange of the joint pieces 209 and 309 is also larger than the distance between the upper flange and the lower flange of the ceiling beam 202 and the floor beam 302, and the upper flange of the joint pieces 209 and 309. The lower flange is pressed and welded to the upper and lower flanges of the ceiling beam 202 and the floor beam 302. The upper and lower flanges of the joint pieces 209 and 309 are intended to return to their original state. This is because the force that the upper and lower flanges return to the original state is canceled out, and the ceiling beam 202 and the floor beam 302 are not bent.

The joint structure of columns and beams described in Patent Document 3 has the following problems.
That is, when a force in the horizontal direction is applied to the building unit due to wind, earthquake, or the like, a large force is generated in the direction of changing the angle at the joint between the column and the beam.
In order to resist this force, it is necessary to increase the mechanical strength of the joint between the column and the beam.
In the joint structure between the column and the beam described in Patent Document 2, the mechanical strength can be increased by increasing the thickness of the joint piece. However, when welding the protrusion with the beam web extended to the column. However, there is a problem that the thickness of the steel plate with only the protrusion cannot be increased, and the resistance to the force is small.

  Accordingly, an object of the present invention is to weld a U-shaped joint piece consisting of a web and two flanges to a pillar, and weld a beam to the joint piece so that the building unit has high resistance to horizontal forces such as wind. It is easy to weld a U-shaped joint piece to the surface of the column, and the end of the ceiling beam of the ceiling structure or the end of the floor beam of the floor structure between the joint pieces of the wife side structure It is intended to provide a column-to-beam connection structure of a building unit in which the ceiling beam and the floor beam are not deformed even if a mass production method in which a ceiling beam or a floor beam is attached to the joint piece and the ceiling beam is inserted.

  The present invention has been made to achieve the above object, and the invention according to claim 1 is characterized in that a U-shaped joint piece composed of a web and two flanges is provided on the column and substantially horizontally from the side of the column. In the joint structure of a column and a beam of a building unit, which is welded in a protruding state, and a beam having a U-shaped cross section composed of a web and two flanges is welded to the joint piece, the joint piece includes: The two flanges and the web are independent plates, and the two flanges and the web are welded in a U-shape to the side surface of the column.

The beam in the invention described in claim 1 refers to a beam such as a ceiling beam or a floor beam.
In the invention described in claim 1, the beam is welded to the two flanges and the web of the joint piece. At this time, the beam may be welded to the flange of the joint piece and the inner surface of the web. And it may be welded to the outer surface.
However, with the flange, if the flange of the joint piece is inserted inside the beam and welding is attempted from the inside, the other flange that faces it is difficult to weld because it interferes, so the beam can be welded from the outside so that it can be welded from the outside. The structure welded to is preferable. In addition, since the web does not have another hindrance behind the web and can be easily welded from either side, the structure may be such that the beam is welded to either the inside or the outside of the web.

Moreover, the cover body is normally attached to the upper end surface and lower end surface of a cylindrical pillar. Therefore, the flange and the lid is a plate body that is integrated, Ru is welded to the plate body to the pillar.
More specifically, the upper flange of the joint piece that connects the girder-side ceiling beam, the lid attached to the upper end surface of the column, and the upper flange of the joint piece that connects the gable-side ceiling beam are on approximately the same plane, moreover, since the neighboring position to the one plate member which is continuous it like.

The same applies to floor beams. That is, the lower flange of the joint piece that connects the girder-side floor beam, the lid attached to the lower end surface of the column, and the lower flange of the joint piece that connects the floor-side beam of the wife are substantially the same. is on a plane, moreover, since the neighboring position to the one plate member which is continuous it like.

The invention described in claim 2 relates to the invention described in claim 1, wherein the web of the joint piece is welded to the inner surface of the web of the beam.
In this invention, the joint piece web is welded to the inner surface of the beam web, but the flange of the joint piece is not particularly limited, that is, welded to the inner surface of the beam flange. Alternatively, it may be melted on the outer surface of the flange of the beam.

(Function)
In the invention described in claim 1, a U-shaped joint piece comprising a web and two flanges is welded to the column so as to protrude substantially horizontally from the side of the column, and the web and two pieces are connected to the joint piece. In the joint structure of a pillar and a beam of a building unit in which a beam having a long U-shaped cross section consisting of a flange is welded, the joint piece is a plate body having two flanges and a web independent of each other. The flange and web are welded in a U-shape to the side of the column, so the flange and web of the joint piece are welded independently to the column, or the flange and web of this joint piece are welded to the beam independently. be able to.

  For example, the beam flange can be welded to the outer surface of the joint piece flange, the beam web can be welded to the inner surface of the joint piece web, the outer surface of the square cylindrical column, and the outer surface of the web. Even when the column corners are curved, the web is moved in a direction approaching the curved surface of the column corners, or the web weld surface is set to the corners of the columns. Can be welded to the column. And if it does in this way, the clearance gap between a web and the corner | angular part of a pillar can be made small, a web can be contact | abutted to a pillar, and it can weld easily and favorably.

  Further, as shown in FIG. 13, a manufacturing method of a mass production system of a building unit is adopted in which a gap 300 is provided between the web of the beam and the web of the joint piece and the web of the joint piece is pressed against the web of the beam and welded. Since the web of the joint piece is an independent plate, the web of the joint piece can be bent and pressed and easily welded, and the bent joint piece web can be returned to its original state. The force to try will work, but the force will be weak, so the beam will not bend as shown in FIG.

The invention according to claim 2 relates to the invention according to claim 1, wherein the web of the joint piece is welded to the inner surface of the web of the beam. The outer surface of the web of the beam welded to the outer surface of the web can be substantially flush with the outer surface of the column. As a result, the size of the building unit can be increased by the thickness of the web of the joint piece, rather than welding the web of the beam inside the web of the joint piece.
Moreover, when the outer surface of the web of the beam is substantially flush with the outer surface of the column in this way, the web of the joint piece is welded to the plane portion moved in the indoor direction by the thickness of the beam from the curved portion of the column corner. It becomes easy to weld.

  In the invention according to claim 1, a U-shaped joint piece comprising a web and two flanges is welded to the column so as to protrude substantially horizontally from the side surface of the column, and the web and two pieces are connected to the joint piece. In the joint structure of a pillar and a beam of a building unit in which a beam having a long U-shaped cross section consisting of a flange is welded, the joint piece is a plate body having two flanges and a web independent of each other. The flange and web are welded in a U-shape to the side of the column. By moving the web by the distance that the column is bent and retracted, or by aligning the welded surface of the web with the curved surface of the corner of the column The outer surface of the square cylindrical column and the outer surface of the web can be substantially flush with each other and can be easily welded. Even if the manufacturing method shown in FIG. Piece of The web can be easily welded by bending the web, and the web of the bent joint piece is subjected to a force to return it to its original state, but this force is weak, so the beam is as shown in FIG. Unyielding.

  The invention according to claim 2 relates to the invention according to claim 1, and since the web of the joint piece is welded to the inner surface of the web of the beam, in addition to the effect of the invention of claim 1, The outer surface of the beam web and the outer surface of the column can be welded on substantially the same plane, and the building unit can be widened by the thickness of the web of the joint piece.

  Hereinafter, the best mode for carrying out the present invention will be described in detail by way of examples.

  1 to 6 show an embodiment of the present invention. FIG. 1 is a partially cutaway perspective view showing a building unit, FIG. 2 is a perspective view showing a joint piece connecting ceiling beams, and FIG. 3 is a floor beam. FIG. 4 is a perspective view showing a main part in a state where the joint piece is connected to the column, and FIG. 5 is a view showing the connection of the ceiling structure and the floor structure to the girder side structure. FIG. 6 is a perspective view showing a position of a floor beam or a ceiling beam and a joint piece welded to a column when connecting the ceiling structure and the floor structure to the girder side structure. FIG.

  1 to 6, reference numeral 1 denotes a building unit. As shown in FIG. 1, the building unit 1 includes four pillars 11 and four steel square cylinders erected at rectangular four corners. The bottom beam 12 of a steel cross-sectional long U-shaped body in which the lower end of the pillar 11 is connected along the rectangular side with the lower end of the rectangular shape, and the upper end of the column 11 along the rectangular side It has a skeleton composed of a steel ceiling beam 13 having an elongated U-shaped cross section made of steel.

  Then, a steel square floor beam 14 is attached to the opposite floor beam 12 of the skeleton, and a wooden floor joist 15 is mounted on the floor beam 14, and a particle board is mounted on the floor joist 15. The floor surface material 16 is attached to form a floor, a wooden ceiling edge 18 is attached to the opposing ceiling beam 17, and a gypsum board ceiling surface material 19 is attached to the lower surface of the ceiling edge 18 to attach the ceiling. Formed.

In addition, in the place where an outer wall is provided, the intermediate pillar 2 is inserted and attached between the ceiling beam 13 and the floor beam 12, and an outer wall is formed by attaching an inner wall panel or an outer wall panel to the intermediate pillar 2.
If necessary, a partition wall panel or the like is attached.
The joint structure of the column 12 and the ceiling beam 13 or the floor beam 12 of the building unit 1 will be described in detail.

First, a structure in which the ceiling beam 13 is joined to the column 11 will be described.
3 is a joint piece for connecting the ceiling beam 13, and this joint piece 3 comprises an upper flange 31, a lower flange 32 and a web 33, which are independent plates, as shown in FIG. The upper flange 31 is integrated with the lid body 111 of the column 11. .
That is, A is a joint piece that connects the upper flange 31 of the joint piece connecting the ceiling beam 13 on the girder side, the upper lid 111 attached to the upper end surface of the column 11, and the joint beam 13 on the wife side. The upper flange 31 is integrated.

Further, the end surface 331 attached to the column 11 of the web 33 has a shape along the curved surface formed at the corner of the column 11.
And as shown in FIG. 4, the upper side cover body 111 is welded to the upper end surface of the pillar 11. As shown in FIG.
Then, since the upper lid body 111 and the upper flange 31 of the joint piece 3 are integrated, the upper flange 31 of the joint piece 3 is also welded at the same time.

Further, the lower flange 32 is welded to the column 11 in a substantially parallel position at a position slightly lower than the height of the ceiling beam 13 from the upper flange 31.
Further, the web 33 is welded to a curved surface formed at the corner of the column 11 between the upper flange 31 and the lower flange 32.
Thus, the upper flange 31, the lower flange 32, and the web 33 form a U-shaped joint piece 3.
And the edge part of the ceiling beam 13 is inserted in the upper flange 31, the lower flange 32, and the web 33 of the joint piece 3 welded in this U-shape, and the upper flange 31, the lower flange 32, and the web 33 are The ceiling beam 13 is welded to the upper flange, the lower flange, and the web, respectively.

Next, a structure in which the floor beam 12 is joined to the column 11 will be described.
4 is a joint piece for connecting the floor beam 12, and this joint piece 4 comprises an upper flange 41, a lower flange 42, and a web 43, which are independent plates, as shown in FIG. The lower flange 43 is integrated with the lower lid body 112 of the column 11. .
That is, B is a joint piece connecting the lower flange 42 of the joint piece connecting the floor beam 12 on the girder side, the lid body 112 attached to the lower end surface of the column 11, and the floor beam 12 on the wife side. The lower flange 42 is integrated.

Further, the end surface 431 attached to the column 11 of the web 43 has a shape along the curved surface formed at the corner of the column 11.
And as shown in FIG. 4, the lower side cover body 112 is welded to the lower end surface of the pillar 11. As shown in FIG.
Then, since the lower lid 112 and the lower flange 42 of the joint piece 4 are integrated, the lower flange 42 of the joint piece 4 is also welded at the same time.
Further, the upper flange 41 is welded to the column 11 substantially parallel to the position slightly higher than the height of the floor beam 12 from the lower flange 42.

The web 43 is welded to a curved surface formed at the corner of the column 11 between the upper flange 41 and the lower flange 42.
Thus, the U-shaped joint piece 4 is formed by the upper flange 41, the lower flange 42, and the web 43.
And the edge part of the floor beam 12 is inserted in the upper flange 41, the lower flange 42, and the web 43 of the joint piece 4 welded in this U-shape, and the upper flange 41, the lower flange 42, and the web 43 are The floor beam 12 is welded to the upper flange, the lower flange, and the web, respectively.

Next, the construction method and operation of the building unit 1 will be described.
First, as shown in FIG. 4, the upper lid body 111 of A is welded to the upper end surface of the column 11.
Then, since the upper lid body 111 and the upper flange 31 of the joint piece 3 are integrated with each other, the upper flange 31 of the joint piece 3 is also welded at the same time.
Further, the lower flange 32 is welded substantially parallel to the position slightly lower than the height of the ceiling beam 13 from the upper flange 31.
Further, the web 33 is welded to a curved surface formed at the corner of the column 11 between the upper flange 31 and the lower footing 32.

  Then, since the web 33 is an independent plate, it is possible to move only the web 33 as far as the curved surface of the column 11, and the welding surface 331 of the web 33 follows the curved surface of the column 11. Therefore, the U-shaped joint piece 3 including the upper flange 31, the lower flange 32, and the web 33 is formed on the column 11.

Next, the lower lid portion 112 of B is welded to the lower end surface of the column 11.
Then, in B, since the lower lid body 112 and the lower flange 42 of the joint piece 4 are integrated, the upper flange 42 of the joint piece 4 is also welded simultaneously.
Further, the upper flange 41 is welded substantially parallel to the position slightly higher than the height of the floor beam 12 from the lower flange 42.
Further, the web 43 is welded to the curved surface formed at the corner of the column 11 between the upper flange 41 and the lower flange 42.

Then, since the web 43 is an independent plate body, only this web 43 can be moved as far as the curved surface of the column 11, and the welding surface 431 of the web 43 is along the curved surface of the column 11. Therefore, the U-shaped joint piece 4 including the upper flange 41, the lower flange 42, and the web 43 is formed on the column 11.
Next, the two pillars 11 to which the joint pieces 3 and 4 are welded are substantially parallel with the joint pieces 3 and 4 for attaching the ceiling beam 13 and the floor beam 12 on the wife side (short side) facing each other. The end of the ceiling beam 13 is placed in the joint piece 3, and the flanges and webs of the joint piece 3 and the ceiling beam 13 are welded together. Moreover, the edge part of the floor beam 12 is put in the joint piece 4, and the flanges and webs of this joint piece 4 and the floor beam 12 are welded.

Then, as shown in FIG. 5, the ceiling beam 13 and the floor beam 12 on the wife side (the short side of the rectangular building unit) are welded to the column 11 via the joint pieces 3 and 4. 11 is a wife-side structure K in which a joint piece 3 for attaching a ceiling beam 13 on a girder side (long side of a rectangular building unit) and a joint piece 4 for attaching a floor beam 12 are welded.
Further, the ceiling beam 13 on the girder side is arranged substantially in parallel, the ceiling field edge 17 is passed to the ceiling beam 13, and a screw is screwed into the end surface of the ceiling field edge 17 from the ceiling beam 13 to attach the ceiling field edge 17. The ceiling structure 18 is manufactured by attaching the ceiling surface material 18 to the lower surface of the ceiling field edge 17.

Further, the floor beams 12 on the girder side are arranged substantially in parallel, a floor beam 14 is passed to the floor beam 12, a floor joist 15 is attached to the upper surface of the floor beam 14, and the floor surface is placed on the floor joist 15. The floor structure Y is manufactured by attaching the material 16.
Thus, since the girder side structure K, the ceiling structure T, and the floor structure Y are manufactured separately, they can be manufactured on the ground.
Therefore, rather than manufacturing a building skeleton in advance and attaching parts such as floor materials and ceiling materials to this skeleton, for example, when attaching ceiling materials, it is necessary to face up and it is extremely difficult. However, it is not necessary and easy to manufacture.

  Next, the two wife-side structures K are erected substantially in parallel with the joint pieces 3 and 4 facing each other, the ceiling structure T is disposed at the ceiling position between them, and the floor structure is disposed at the floor position. Y is arranged, and the wife-side structure K is approached from both sides of the ceiling structure T and the floor structure Y, and the ceiling structure T is placed between the joint pieces 3 and 4 on both sides of the wife-side structure K. The ends of the ceiling beam 13 and the floor beam 12 of the floor structure Y are inserted, the ceiling beam 13 and the joint piece 3 of the ceiling structure T, and the floor beam 12 and the joint piece 4 of the floor structure Y, To weld.

  At this time, in order to facilitate insertion of the end of the ceiling beam 13 of the ceiling structure T and the end of the floor beam 12 of the floor structure Y between the joint pieces 3 and 4 of the wife side structure K, the wife The distance between the inner surfaces of the web 33 of the joint piece 3 of the side structure K is slightly larger than the distance between the outer surfaces of the webs of the ceiling beams 13 on both sides of the ceiling structure T, or the joint piece of the wife side structure K The distance between the inner surfaces of the four webs 43 is slightly larger than the distance between the outer surfaces of the webs of the floor beams 12 on both sides of the floor structure Y.

Therefore, when the end portion of the ceiling beam 13 of the ceiling structure body or the floor beam 4 of the floor structure body Y is inserted into the joint piece 3 or 4 of the wife side structure body K, as shown in FIG. Arise.
In order to eliminate this gap D, the web 33 of the joint piece 3 of the wife side structure K and the web 43 of the joint piece 4 are pressed indoors (in the direction indicated by the arrows) to The welding is performed by contacting the web of the ceiling beam 13 of the ceiling structure T and the web of the floor beam 12 of the floor structure Y.

As a result, in the building unit manufactured in this manner, the webs 33 and 43 of the pressed joint pieces 3 and 4 have a force to return to the original state. Since this is an independent plate body, this force is small, and the floor beam 12 and the ceiling beam 13 on the wife side are not curved outward.
Finally, the building unit 1 is completed when this connecting portion and other finishing are performed.
Thus, since the building unit 1 can be formed simply by manufacturing the wife side structure K, the ceiling structure T, and the floor structure Y in advance and assembling them, the building unit 1 is extremely easy to manufacture and is fast. It can be manufactured and is easy to mass-produce.

7 to 10 are reference examples, FIG. 7 is a perspective view showing a joint piece for connecting a ceiling beam, FIG. 8 is a perspective view showing a joint piece for connecting a floor beam, and FIG. 9 is a column using the joint piece as a column. FIG. 10 is a perspective view showing a main part in a connected state. FIG. 10 is a view showing a floor beam and a ceiling beam when connecting a ceiling structure and a floor structure to a girder side structure, and a joint piece welded to a column. It is a perspective view which shows a position.

  When comparing the second embodiment shown in FIGS. 7 to 10 with the first embodiment shown in FIGS. 1 to 6, as shown in FIG. 7, the upper flange 31a of the joint piece 3a and the upper lid body 111a of the column 11a are formed. As shown in FIG. 8, the lower flange 42a of the joint piece 4a and the lower lid body 112a of the column 11a are separated, as shown in FIG. 8, the web 33a, 43a is welded at a position moved from the curved surface of the pillar 11a to the indoor side by a distance substantially equal to the thickness of the ceiling beam or floor beam, and the others are substantially the same. The structure is omitted.

Next, the construction method and operation of this building unit will be described.
First, as shown in FIG. 9, the upper lid body 111a is welded to the upper end surface of the column 11a.
Next, the upper flange 31a of the joint piece 3a is welded, the lower flange 32a is welded from the upper flange 31a to a position slightly lower than the height of the ceiling beam, and the web 33a is joined to the upper flange 31a and the lower flange. It welds to the position which moved to the indoor direction only the distance substantially equal to the thickness of a ceiling beam from the curved surface formed in the corner | angular of the pillar 11a between 32a.

Then, even if the corner portion of the pillar 11a has a curved surface, the web 33a is welded to a flat plate portion that is separated from the curved surface by a distance substantially equal to the thickness of the ceiling beam. The flange 31a, the lower flange 32a, and the web 33a form a U-shaped joint piece 3a.
Next, the lower lid body 112a is welded to the lower end surface of the column 11a.
Next, the lower flange 42a of the joint piece 4a is welded, the upper flange 41a is welded in a position slightly higher than the floor beam height from the lower flange 42a, and the web 43a is formed at the corner of the column 11a. It is welded at a position separated from the curved surface by the thickness of the floor beam.

Then, even if the corner portion of the column 11a has a curved surface, the web 43a is welded to a flat plate portion separated from the curved surface by the thickness of the floor beam, so that it can be welded well, and the upper flange 41a, A U-shaped joint piece 4a is formed by the side flange 42a and the web 43a.
Next, using the pillar 11a to which the joint pieces 3a and 4a are welded, the wife side structure, the ceiling structure, and the floor structure are manufactured in the same manner as in the first embodiment.
Thus, since the girder side structure, the ceiling structure, and the floor structure are manufactured separately, they can be manufactured on the ground and are easy to manufacture.

Next, in the same manner as in Example 1, the two wife-side structures are erected substantially in parallel, the ceiling structure is disposed at the ceiling position therebetween, and the floor structure is disposed at the floor position. The end of the ceiling structure and the floor structure is inserted between the joint pieces 3a and 4a on both sides of the wife side structure by approaching the wife side structure from both sides of the ceiling structure and the floor structure, The ceiling beam of the ceiling structure and the joint piece 3a are welded, and the floor beam of the floor structure and the joint piece 4a are welded.
At this time, as shown in FIG. 10, the web of the ceiling beam 13a is inserted outside the web 33a of the joint piece 3a, or the web of the floor beam 12a is inserted outside the web 43a of the joint piece 4a.

Further, in order to facilitate the insertion of the ceiling structure and the floor structure outside the webs 33a and 43a of the joint piece 3a and 4a of the wife side structure, the distance between the outer surfaces of the web 33a of the joint piece 3a of the wife side structure Is made smaller than the distance between the inner surfaces of the webs of the ceiling beams 13a on both sides of the ceiling structure, or the distance between the outer surfaces of the webs 43a of the joint piece 4a of the wife side structure is set to the floors on both sides of the floor structure. The distance is smaller than the distance between the inner surfaces of the web of the beam 12a.
Therefore, when the end portion of the ceiling beam 13a of the ceiling structure body or the floor beam 12a of the floor structure body is inserted outside the webs 33a and 43a of the joint pieces 3a and 4a of the wife side structure body K, a gap Da is generated.

Then, the web 33a of the joint piece 3a of the wife side structure and the web 43a of the joint piece 4a are pressed to the outdoor side (in the direction indicated by the arrow) so as to eliminate the gap Da, and the web 33a is attached to the ceiling structure. Further, the web 43a is welded to the ceiling beam 13a while being brought into contact with the floor beam 12a of the floor structure.
At this time, when the web 33a of the joint piece 3a of the wife side structure and the web 43a of the joint piece 4a are pressed and welded to the outdoor side, welding is performed from the inside of the joint pieces 3a and 4a. Since there is nothing behind it, it can be welded relatively easily.

In the building unit manufactured in this manner, the webs 33a and 43a of the joint pieces 3a and 4a that are pressed are subjected to a force for returning to the original state, but the webs 33a and 43a of the joint pieces are independent of each other. Since it is a plate body, this force is small, and the floor beam and ceiling beam on the wife side are not curved inward.
Finally, building this unit and other finishes completes the building unit.
In this way, a building unit can be formed simply by prefabricating the wife side structure, ceiling structure, and floor structure and assembling them, so this building unit is extremely easy to manufacture, can be manufactured quickly, and is mass-produced. Easy to do.

  Further, in the building unit manufactured in this way, the outer surface of the web of the beam welded to the outer surface of the web can be substantially flush with the outer surface of the column. Can be increased by the thickness of the web of the joint piece.

11 and 12 are reference examples, FIG. 11 is a perspective view showing a joint piece for connecting a ceiling beam (floor beam), and FIG. 12 is a diagram for connecting a ceiling structure and a floor structure to a girder side structure. It is a perspective view which shows the position of this floor beam and ceiling beam, and the joint piece welded to the column.

  11 and FIG. 12 is compared with Example 1 shown in FIGS. 1 to 6, as shown in FIG. 11, the column cover is not integrated with the joint piece 3b (4b). That is, the joint piece 3b (4b) is integrated with the upper flange 31b (41b), the web 33b (43b), and the lower flange 32b (42b) in a U-shape, the upper flange 31b (41b) and the web 33b. (43b) and a boundary portion between the web 33b (43b) and the lower flange 32b (42b) are provided with slit-like notches 35b (45b) in the column direction from the tip. Since only the differences are present and the others are substantially the same, other structures of the building unit are omitted.

Next, the construction method and operation of this building unit will be described.
First, the upper lid is welded to the upper end surface of the column.
Next, the joint piece 3b is welded.
At this time, if there is a gap between the column of the web 33b and the curved surface formed at the corner, and it is difficult to weld, a spacer is inserted for welding.
Next, a lower lid is welded to the lower end surface of the column.
Next, the joint piece 4b is welded.
At this time, if there is a gap between the web 43b and the curved surface formed at the corner of the column and it is difficult to weld, a spacer is inserted for welding.

Next, using the pillar to which the joint pieces 3b and 4b are welded, a wife side structure, a ceiling structure, and a floor structure are manufactured in the same manner as in the first embodiment.
Thus, since the girder side structure, the ceiling structure, and the floor structure are manufactured separately, they can be manufactured on the ground and are easy to manufacture.
Next, in the same manner as in Example 1, the two wife-side structures are erected substantially in parallel, the ceiling structure is disposed at the ceiling position, and the floor structure is disposed at the floor position. The end of the ceiling beam 13b of the ceiling structure and the floor structure are placed between the joint pieces 3b and 4b on both sides of the wife side structure by approaching the wife side structure from both sides of the ceiling structure and the floor structure. The end of the floor beam 12b is inserted, and the ceiling beam 13b and the joint piece 3b of this ceiling structure are welded, and the floor beam 12b and the joint piece 4b of the floor structure are welded.

At this time, in order to facilitate the insertion of the ceiling structure or the floor structure between the joint pieces 3b and 4b of the wife side structure, the distance between the inner surfaces of the web 33b of the joint piece 3b of the wife side structure is set to the ceiling. The distance between the outer surfaces of the webs of the ceiling beam 13b on both sides of the structure is slightly larger than the distance between the inner surfaces of the web 43b of the joint piece 4b of the wife side structure. It is slightly larger than the distance between the outer surfaces of the web.
Therefore, when the end of the ceiling beam 13b of the ceiling structure or the floor beam 12b of the floor structure is inserted into the joint piece 3b, 4b of the wife side structure, a gap Db is generated as shown in FIG.

Then, the outer surface of the web 33b of the joint piece 3b of the wife-side structure and the outer surface of the web 43b of the joint piece 4b are pressed indoors (in the direction indicated by the arrow) so as to eliminate the gap Db. The 3 and 4 webs 33b and 43b are brought into contact with and welded to the ceiling beam 13b of the ceiling structure and the floor beam 12b of the floor structure.
Thus, since the notch 35b (45b) exists between the flanges 31b, 32b (41b, 42b) of the joint piece 3b (4b) and the web 33b (43b), the notch 35b (45b) is sandwiched between the notches. The webs 33b and 43b can be bent and easily welded, and the webs 33b and 43b) of the bent joint piece 3b (4b) act to return to the original state, but this force is weak. Therefore, the beam does not bend.

Finally, the building unit 1 is completed when this connecting portion and other finishing are performed.
As described above, since the building unit can be formed simply by manufacturing the wife side structure, the ceiling structure, and the floor structure in advance and assembling them, the building unit is extremely easy to manufacture.

In this embodiment, the building unit having both the ceiling beam and the floor beam has been described. However, the present invention can be applied to a building unit in which only one of the ceiling beam and the floor beam is attached.
In this embodiment, a square cylinder is used as a pillar, but the pillar is not limited to a square cylinder. For example, it may be a U-shaped long section, an L-shaped long section, or an E-shaped long section.

It is a partially cutaway perspective view showing the building unit of the first embodiment. It is a perspective view which shows the joint piece which connects the ceiling beam of Example 1. FIG. It is a perspective view which shows the joint piece which connects the floor beam of Example 1. FIG. It is a perspective view which shows the principal part of the state which has connected the joint piece of Example 1 to the pillar. It is a perspective view which shows a part of the state which has connected the ceiling structure and the floor structure to the girder side structure of Example 1. FIG. It is a perspective view which shows the position of the floor beam and ceiling beam at the time of connecting a ceiling structure and a floor structure to the girder side structure of Example 1, and the joint piece welded to the column. It is a perspective view which shows the joint piece which connects the ceiling beam of Example 2. FIG. It is a perspective view which shows the joint piece which connects the floor beam of Example 2. FIG. It is a perspective view which shows the principal part of the state which has connected the joint piece of Example 2 to the pillar. It is a perspective view which shows the position of the floor beam and ceiling beam at the time of connecting a ceiling structure and a floor structure to the girder side structure of Example 2, and the joint piece welded to the column. It is a perspective view which shows the joint piece which connects the ceiling beam (floor beam) of Example 3. FIG. It is a perspective view which shows the position of the floor beam and ceiling beam at the time of connecting a ceiling structure and a floor structure to the girder side structure of Example 3, and the joint piece welded to the column. It is a perspective view which shows a part of the state which has connected the ceiling structure body and the floor structure to the conventional girder side structure. It is a perspective view which shows the position of the floor beam and ceiling beam at the time of connecting a ceiling structure body and a floor structure to the conventional girder side structure, and the joint piece welded to the column. It is a top view which shows the conventional problem.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Building unit 11 Column 12, 12a, 12b Floor beam 13, 13a, 13b Ceiling beam 3, 3a, 3b Joint piece which attaches a ceiling beam 4, 4a, 4b Joint piece which attaches a floor beam K Girder side structure T Ceiling structure Y floor structure

Claims (2)

A U-shaped joint piece consisting of a web and two flanges is welded to the column so that it protrudes substantially horizontally from the side of the column, and the U-shaped cross section consisting of the web and two flanges is attached to this joint piece. In the connecting structure of the column and beam of the building unit where the beam of the scale is welded,
The joint piece is provided in two directions with a pillar interposed therebetween, and the joint piece is an independent plate body having two flanges and a web, and provided in the two directions on the end face side of the pillar. The flange is formed by a lid attached to the end face of the column, and the flange and web of the joint piece are welded to the column and the flange and web of the beam inserted into the joint piece are combined. each welded joint structure columns and beams of the building unit, characterized in Rukoto to.   2. The column-to-beam joint structure of a building unit according to claim 1, wherein the web of the joint piece is welded to the inner surface of the web of the beam.

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