JP6441529B1 - Column connection structure and column connection method - Google Patents

Abstract

Provided are a column connection structure and a column connection method capable of simplifying a welding process using an automatic welder and ensuring connection position accuracy.
A column connection structure 1 includes a lower column 10 having a diaphragm 14 at an upper end, an upper column 20 having a lower end 22 welded to the diaphragm 14, an upper end 32 fixed to a side surface of the upper column 20, and a lower end. The part 31 is fixed to the diaphragm 14, and has a connecting member 30 between the intermediate part 33 and the side surface of the upper column 20, in which a work interval 34 through which the automatic welding machine 40 can pass is formed.
[Selection] Figure 2

Description

  The present invention relates to a column connection structure and a column connection method.

In a steel structure building, steel pillar beams prefabricated in a factory are brought into a building site and are sequentially connected by welding. Tubular steel pipe columns are often used for steel columns, and in addition to welding steel pipe columns slightly above the beam-column joint, welding between the upper diaphragm of the beam-column joint and the steel tube column has been proposed (Patent Literature). 1).
The welding operation of steel pipe columns is being automated by a robot (automatic welding machine).
For example, an annular rail is installed around the end of the steel pipe column, and an automatic welding machine is run along the rail to weld the entire circumference of the steel pipe column (see Patent Document 2).
The welding between the upper diaphragm of the beam-column joint and the steel pipe column proposed in Patent Document 1 is difficult to carry out because it is difficult to carry out because the welding posture is bent to the feet by hand.
In robot welding between steel pipe columns, an erection piece is used to increase mutual positional accuracy. In order to avoid interference between the erection piece and the automatic welding machine, it has been proposed to limit the movement range of the automatic welding machine for each section and finely adjust the direction of the automatic welding machine depending on the welding position (see Patent Document 3). .
For the erection piece along the surface of the steel pipe column, a shaft material called “giraffe” that can be expanded and contracted is used between the column and the nearest beam upper surface (see Patent Document 4). However, the purpose of this shaft member is to control the overall posture of the steel column, and it is different from the use in which the positional accuracy of the connecting portion between the columns is increased.

JP-A-6-158717 JP 2000-135594 A JP-A-2018-53626 JP-A-1-239268

According to Patent Document 3 described above, even when an erection piece is used to connect steel pipe columns, a revolving automatic welding machine can be used. However, in Patent Document 3, there is a problem in that the movement of the automatic welder is in each section, the entire circumference of the column cannot be continuously welded, and the welding process is complicated.
On the other hand, if there is no positioning means such as an erection piece, it is difficult to increase the horizontal position accuracy when connecting steel pipe columns.

  An object of the present invention is to provide a column connection structure and a column connection method capable of simplifying a welding process using an automatic welder and ensuring connection position accuracy.

The column connection structure of the present invention includes a lower column having a diaphragm at an upper end, an upper column whose lower end is welded to the diaphragm, an upper end fixed to a side surface of the upper column, and a lower end positioned on the diaphragm or the diaphragm. A connecting member that is fixed to a building member fixed to the upper member and is formed with a work interval through which an automatic welding machine can pass between an intermediate portion between the upper end portion and the lower end portion and a side surface of the upper column. Yes, and the diaphragm, the positioning member for positioning the upper pillar is fixed, the positioning member is characterized backing member der Rukoto the fittable ring inside the lower end of the upper pillar .

In the present invention, the other end of the connecting member and the diaphragm may be directly fixed, for example, indirectly fixed via another building member such as a beam connected to the side surface of the lower column. May be.
In this invention, since the lower end of the upper column is welded and fixed to the surface of the diaphragm of the lower column, the horizontal positional accuracy required during welding can be relaxed compared to the case where the column end portions are welded flat. . For this reason, as a positioning means for the upper column and the lower column at the time of welding, it is possible to use a connection member that is separated from the side surface of the upper column by a work interval, not an erection piece that is directly connected to the side surface of each column. As a result, an annular space including the work interval is formed around the upper column, and the automatic welding machine makes a round through this space, so that the lower end of the upper column and the diaphragm are collectively welded. It is possible to secure the connection position accuracy while simplifying the welding process using the automatic welding machine.
In the present invention, the upper column can be positioned in the horizontal direction with respect to the diaphragm by the positioning member fixed to the diaphragm, and positioning by the connecting member can be assisted. That is, the positioning of the diaphragm and the upper column by the connecting member is an indirect positioning function with a work interval from each connecting portion. Here, the positioning accuracy can be increased by adding a direct positioning function by the positioning member fixed to the diaphragm.
At this time, the positioning member only needs to be installed on the surface of the diaphragm which is inside the upper column and can be engaged with the lower end of the upper column, and is installed outside the upper column like an erection piece to pass through the automatic welder. There is no hindrance. Therefore, by positioning the diaphragm and the upper column with the connecting member and the positioning member, the automatic welding machine is installed in the annular space including the work interval while sufficiently securing the connection accuracy between the upper column and the lower column. It is possible to pass.
In the present invention, the backing member used at the time of welding the upper column and the lower column can also be used as a positioning member for positioning the upper column, and the structure can be simplified.

In the column connection structure of the present invention, it is preferable that the connection member has a rod shape and is inclined so as to move away from the side surface of the upper column as it is closer to the lower end.
In the present invention, a large work interval can be secured around the side surface in the vicinity of the lower end of the upper column, and the structure can be simplified because the rod-shaped connecting member is used.

In the column connection structure of the present invention, it is preferable that the connection member has an expansion / contraction mechanism that adjusts a length from the upper end to the lower end.
In the present invention, by adjusting the length from the upper end portion to the lower end portion with the expansion / contraction mechanism, it is possible to match the actual dimension from the fixed portion with the upper column to the fixed portion with the lower column. Further, by operating the telescopic mechanism with the upper end and the lower end connected, the arrangement and angle of the upper column with respect to the lower column can be adjusted.

In the column connection structure of the present invention, it is preferable that a contact member that contacts the backing member inserted from below is installed inside the upper column.
In the present invention, an intended groove can be ensured between the lower end of the upper column and the diaphragm.

In the column connection structure of the present invention, the lower column has a column beam joint on an upper end side, a beam extending in a lateral direction is connected to the column beam junction, and the diaphragm includes the column beam junction. It is preferable that it is arrange | positioned on the upper surface side of this at the same height as the upper surface of the said beam.
In such this invention, it can be set as the structure of this invention using the diaphragm used for a normal column beam junction part, and the increase in a number of parts and the increase in cost can be avoided.
The diaphragm constituting the present invention may be separate from the diaphragm used for the beam-column joint. For example, a short column is installed on the upper surface of the upper diaphragm of the beam-beam joint, and a connection diaphragm is provided at the upper end of the diaphragm. And the upper column may be connected to the diaphragm.

The column connecting method of the present invention is a column connecting method in which the upper end surface of the lower column and the lower end surface of the upper column are welded, and a diaphragm is formed on the upper end of the lower column, and the diaphragm is used as a positioning member. An annular backing member that can be fitted inside the lower end of the upper column is fixed,
In a state in which the upper column is positioned by the positioning member, an upper end is fixed to a side surface of the upper column and a lower end is fixed to the diaphragm or a building member fixed to the diaphragm, and a connection member is installed. A predetermined work interval is formed between the connecting member and the side surface of the upper column, an automatic welder is installed at the work interval, and the automatic welder makes a round along the side surface of the upper column, The lower end of the upper column is welded to the diaphragm over the entire circumference.
In such this invention, the effect as previously demonstrated in the column connection structure of this invention can be acquired.

  In the column connecting method of the present invention, it is preferable that a contact member that contacts the backing member inserted from below is installed inside the upper column.
  In the present invention, an intended groove can be ensured between the lower end of the upper column and the diaphragm.

  ADVANTAGE OF THE INVENTION According to this invention, the welding process using an automatic welding machine can be simplified, and the column connection structure and column connection method which can ensure a connection position precision can be provided.

The side view which shows 1st Embodiment of the column connection structure of this invention. The side view which shows the state which decomposed | disassembled the column connection structure of the said 1st Embodiment. The top view which shows the pillar connection structure of the said 1st Embodiment. Sectional drawing which shows the positioning member before the connection of the said 1st Embodiment. Sectional drawing which shows the positioning member after the connection of the said 1st Embodiment. Sectional drawing which shows the positioning member before the connection of 2nd Embodiment which is not included in this invention. Sectional drawing which shows the positioning member after the connection of the said 2nd Embodiment. The side view which shows 3rd Embodiment of the column connection structure of this invention. The side view which shows 4th Embodiment of the column connection structure of this invention.

[First Embodiment]
1 to 5 show a first embodiment of the column connection structure of the present invention.
1 to 3, the column connection structure 1 is formed by connecting a lower column 10 and an upper column 20.
The lower column 10 has a hollow steel tube column 11 having a square section and arranged vertically, and a column beam joint 12 at the upper end thereof.
The column beam joint 12 has an intermediate column 13 which is the same size as the steel tube column 11 but has a short cross section, and diaphragms 14 and 15 are fixed to the upper surface and the lower surface of the tube column 11 by all-around welding, respectively. The column beam joint 12 is fixed to the steel pipe column 11 by welding the upper end of the steel pipe column 11 to the lower diaphragm 15 all around.

A beam member 16 made of H-shaped steel is connected to each side surface of the column beam joint 12. The beam member 16 fixed to the column beam joint 12 is a short joint, and a series of beams are formed by separately connecting long beam members.
The upper and lower flanges 161 and 162 of the beam member 16 are arranged at the same height as the diaphragms 14 and 15, respectively, and are fixed to each other by welding. The web 163 of the beam 16 is fixed to the side surface of the intermediate column 13 by welding.
A bracket 17 is formed on the beam member 16 at a position away from the column beam joint 12 on the upper surface of the upper flange 161.

The upper column 20 has a steel tube column 21 having the same cross section as the steel tube column 11, and a lower end 22 of the upper column 20 is connected to the upper surface of the diaphragm 14 of the lower column 10. A bracket 27 is formed on the side surface of the steel pipe column 21 at a position away from the lower end 22.
The bracket 27 of the upper column 20 and the bracket 17 of the lower column 10 are connected by a connecting member 30.

  The connecting member 30 has an intermediate portion 33 formed of a steel pipe, an upper end portion 32 connected to the bracket 27 of the upper column 20 with a bolt and nut, and a lower end portion 31 connected to the bracket 17 of the lower column 10 with a bolt and nut. As a result, the lower end 31 of the connection member 30 is fixed to the diaphragm 14 via the beam member 16 as a building member. The building member is not limited to the beam member 16 and may be another member fixed to the diaphragm 14. Further, the diaphragm 14 may be extended and the bracket 17 may be directly fixed to the diaphragm 14.

The connecting member 30 is provided with an expansion / contraction mechanism 35 between the intermediate portion 33 and the lower end portion 31. The expansion / contraction mechanism 35 is configured by a so-called “giraffe” having a screw shaft in the longitudinal direction of the connection member 30 and a nut that is screwed to the screw shaft. By operating a pin outside the nut and rotating the nut, the connection member 30 is rotated. It can be expanded and contracted in the longitudinal direction.
In the connection member 30, the length from the upper end portion 32 to the lower end portion 31 can be adjusted by extending / contracting the expansion / contraction mechanism 35, and the bracket 27, which is a fixed portion with the upper column 20, is connected to the lower column 10. It is possible to match the actual dimensions up to the bracket 17 which is a fixed part of the bracket. Further, by operating the telescopic mechanism 35 in a state where the upper end portion 32 and the lower end portion 31 are connected, the arrangement and angle of the upper column 20 with respect to the lower column 10 can be adjusted.

Since the bracket 27 is formed on the surface of the steel pipe column 21 and the bracket 17 is formed at a position away from the beam-to-column joint 12 of the beam member 16, the connecting member 30 has a lower end 31 relative to the upper end 32. It is arrange | positioned in the state spaced apart from the steel pipe pillar 21, so that it is near.
In the state assembled as the column connection structure 1 (see FIG. 1), a work interval 34 having a desired width is formed between the intermediate portion 33 of the connection member 30 and the surface of the steel pipe column 21. An annular space including a work interval 34 is formed inside the connection member 30 around the vicinity of the lower end 22 of the steel pipe column 21.

When the lower column 10 and the upper column 20 are connected, an automatic welder 40 for performing all-around welding is installed in the annular space including the work interval 34 described above.
The automatic welder 40 includes an annular rail 41 mounted around the steel pipe column 21 and a torch 42 that can circulate along the rail 41. The torch 42 can make a round of the welded portion between the peripheral edge of the lower end 22 of the steel pipe column 21 and the diaphragm 14 by passing through an annular space including the work interval 34.

In order to position the lower end 22 of the steel pipe column 21 to be welded and the diaphragm 14 in the horizontal direction, the diaphragm 14 is provided with a positioning member.
4 and 5, a backing member 51 as a positioning member is installed on the surface of the diaphragm 14. The backing member 51 is an annular steel material that can be fitted to the inside of the lower end 22 of the steel pipe column 21, and is intermittently or continuously welded to the surface of the diaphragm 14 from the inside.

Inside the steel pipe column 21, a plurality of contact members 52 are welded and fixed at predetermined intervals in the circumferential direction at a predetermined height from the lower end. In addition, the contact member 52 is good also as a continuous material which goes around the inner side of the steel pipe column 21. FIG.
When the backing member 51 fixed to the diaphragm 14 is fitted from the lower end 22 of the steel pipe column 21, the upper end of the backing member 51 comes into contact with the contact member 52, and the steel pipe column 21, the diaphragm 14, No longer approaches. In this state, a predetermined gap is formed between the lower end 22 of the steel pipe column 21 and the surface of the diaphragm 14, and the gap is closed by the backing member 51 from the back side and welded by the torch 42 of the automatic welding machine 40. This is possible (see FIG. 5).

In such 1st Embodiment, the pillar connection structure 1 is assembled in the following procedures, and the lower pillar 10 and the upper pillar 20 are connected.
First, the steel column 11, the intermediate column 13, the diaphragms 14 and 15, and the beam member 16 are welded to assemble the lower column 10, and the upper column 20 is formed by the steel tube column 21. The bracket 17 and the backing member 51 are welded to the lower column 10. A bracket 27 and a contact member 52 are welded to the upper column 20. Furthermore, the connection member 30 is prepared.

The manufactured lower pillar 10, upper pillar 20, and connecting member 30 are transported to the building site and assembled sequentially.
First, after fixing the lower column 10, the upper column 20 is suspended and arranged on the upper surface side of the lower column 10. Then, the lower column 10 and the upper column 20 are connected by the connecting member 30, and the lower end 22 of the upper column 20 is directly above the backing member 51 of the diaphragm 14 by adjusting the both-end fixing position of the connecting member 30. Arrange (see FIG. 4).
Next, the upper column 20 is lowered, the backing member 51 is fitted into the upper column 20 from the lower end 22, and the backing member 51 is in contact with the contact member 52.
And the automatic welding machine 40 is mounted | worn with the steel pipe pillar 21, and the lower end 22 of the steel pipe pillar 21 is welded to the surface of the diaphragm 14 over a perimeter by moving the torch 42 along the rail 41 (refer FIG. 5).
As described above, the lower column 10 and the upper column 20 are welded.

According to this embodiment, the following effects can be obtained.
In this embodiment, since the lower end 22 of the upper column 20 is welded and fixed to the surface of the diaphragm 14 of the lower column 10, the positional accuracy in the horizontal direction required at the time of welding is higher than when the column end portions are flat welded. Can be relaxed. For this reason, as a positioning means for the upper column 20 and the lower column 10 at the time of welding, not the erection piece directly connected to the side surface of each column but the connection member 30 separated from the side surface of the upper column 20 by the work interval. be able to. As a result, an annular space including the work interval 34 is formed around the upper column 20, and the automatic welding machine 40 makes a round through this space, so that the entire circumference welding between the lower end 22 of the upper column 20 and the diaphragm 14 is performed. Can be performed in a lump, and the welding process using the automatic welding machine 40 can be simplified and the connection position accuracy can be ensured.

  In the present embodiment, a rod-shaped member is used as the connection member 30, and is inclined so as to be farther from the side surface of the upper column 20 as it is closer to the lower end portion 31. Therefore, a large work interval 34 can be secured around the side surface near the lower end 22 of the upper column 20 and the structure can be simplified.

In this embodiment, the backing member 51 is fixed to the diaphragm 14, and the positioning member that positions the upper column 20 is used.
For this reason, the upper column 20 can be positioned in the horizontal direction with respect to the diaphragm 14, and positioning by the connecting member 30 can be assisted. That is, the positioning of the diaphragm 14 and the upper column 20 by the connection member 30 is an indirect positioning function with the work interval 34 being separated from each connection portion. Here, the positioning accuracy can be increased by adding a direct positioning function by the backing member 51 fixed to the diaphragm 14.

  Further, the backing member 51 used as a positioning member is installed on the surface of the diaphragm 14 inside the upper column 20 and engages with the lower end 22 of the upper column 20, and like the erection piece, the upper column 20 is engaged. The automatic welding machine 40 is not obstructed by being installed outside the vehicle. Therefore, the positioning of the diaphragm 14 and the upper column 20 is performed by the connecting member 30 and the backing member 51 which is a positioning member, thereby ensuring sufficient connection accuracy between the upper column 20 and the lower column 10. The automatic welder 40 can be passed through the annular space including the interval 34.

In the present embodiment, an annular backing member 51 that can be fitted inside the lower end 22 of the upper column 20 is used as a positioning member for the upper column 20 and the lower column 10. Therefore, the backing member 51 used at the time of welding the upper column 20 and the lower column 10 can also be used as a positioning member for positioning the upper column 20, and the structure can be simplified.
Furthermore, since an abutting member 52 that abuts the backing member 51 inserted from below is installed inside the upper column 20, an intended groove is provided between the lower end 22 of the upper column 20 and the diaphragm 14. Can be secured.

In the present embodiment, the lower column 10 has a column beam joint 12 on the upper end side, a beam material 16 extending to the side is connected to the column beam joint 12, and the diaphragm 14 is formed of the column beam joint 12. It was made to arrange | position with the same height as the upper surface of the beam material 16 on the upper surface side.
For this reason, the diaphragm 14 of the normal column beam joint part 12 can be utilized as it is as the diaphragm of the present invention, and an increase in the number of parts and an increase in cost can be avoided.

[Second Embodiment]
6 and 7 show a column connection structure 2 according to a second embodiment not included in the present invention.
The pillar connection structure 2 of this embodiment has the same basic configuration as the pillar connection structure 1 (see FIGS. 1 to 3) of the first embodiment. On the other hand, the positioning member (FIGS. 4 and 5) formed on the diaphragm 14 is different from the column connection structure 1 of the first embodiment. For this reason, the description about a common structure uses the same code | symbol, the overlapping description is abbreviate | omitted, and a different part is demonstrated below.

6 and 7, an annular backing member 53 is fitted into the lower end 22 of the upper column 20 and is fixed to the inner surface of the steel pipe column 21 by welding.
On the surface of the diaphragm 14, a plurality of engaging members 54 as positioning members are arranged in the circumferential direction, and are fixed to the diaphragm 14 by welding. The engaging member 54 may be a continuous material or an annular member that can be fitted inside the backing member 53.
The engaging member 54 fixed to the diaphragm 14 is fitted from the lower surface side of the backing member 53 of the upper column 20 so that the upper column 20 and the diaphragm 14 are positioned in the horizontal direction. Further, a predetermined gap is formed between the lower end 22 of the upper column 20 and the surface of the diaphragm 14 by the lower end of the backing member 53 coming into contact with the surface of the diaphragm 14. This gap is closed by the backing member 53 from the back side, and can be welded by the torch 42 of the automatic welding machine 40 (see FIG. 7).

  Also by such 2nd Embodiment, the effect similar to 1st Embodiment mentioned above can be acquired. Further, the backing member 53 fixed to the upper column 20 can be positioned by the engaging member 54 fixed to the diaphragm 14, and the positioning member to be applied to the diaphragm 14 can be simplified.

[Third Embodiment]
FIG. 8 shows a column connection structure 3 according to a third embodiment of the present invention.
The pillar connection structure 3 of this embodiment has the same basic configuration as the pillar connection structure 1 (see FIGS. 1 to 3) of the first embodiment. For this reason, the description about a common structure uses the same code | symbol, the overlapping description is abbreviate | omitted, and a different part is demonstrated below.
In 1st Embodiment mentioned above, what has the intermediate part 33 made from a steel pipe and the expansion-contraction mechanism 35 was used as the connection member 30 (refer FIG. 1 and FIG. 2). On the other hand, in this embodiment, as shown in FIG. 8, the intermediate part of the connection member 30 is comprised with the wire 36, and the turnbuckle 37 is installed as the expansion-contraction mechanism in the middle.

In this embodiment, the connecting member 30 can be expanded and contracted by manipulating the turnbuckle 37 manually, that is, the length from the upper end portion 32 to the lower end portion 31 can be adjusted.
Since the connection member 30 of this embodiment uses the wire 36, it is limited to transmission of tensile force. However, when the connecting member 30 is provided on all four sides of the upper column 20 (when the lower column 10 and the upper column 20 are used as the middle column of the building), the tensile force from the opposite side is applied to the lower column. The upper column 20 can be displaced in both directions with respect to the side column 10.
In addition, when the lower column 10 and the upper column 20 are used as a side column or a prism of a building, and when there is no connection member 30 on the opposite side of the upper column 20, it is used in the first embodiment and the second embodiment described above. It is preferable to use a connecting member 30 made of a conventional steel pipe and having an expansion / contraction mechanism 35.

[Fourth Embodiment]
FIG. 9 shows a column connection structure 4 according to a fourth embodiment of the present invention.
The pillar connection structure 4 of the present embodiment has the same basic configuration as the pillar connection structure 1 (see FIGS. 1 to 3) of the first embodiment. For this reason, the description about a common structure uses the same code | symbol, the overlapping description is abbreviate | omitted, and a different part is demonstrated below.
In the first embodiment described above, the upper column 20 is connected to the diaphragm 14 that constitutes the upper surface of the column beam joint 12 of the lower column 10. On the other hand, in this embodiment, the diaphragm connecting the upper column 20 is different from the diaphragm 14 of the column beam joint 12.

As shown in FIG. 9, in this embodiment, a short column member 18 is fixed to the upper surface of the diaphragm 14 of the column beam joint 12, and a diaphragm 19 is fixed to the upper surface.
The upper column 20 is connected to the surface of the diaphragm 19 at the lower end. In connection, the configuration of the first embodiment (FIGS. 4 and 5) or the configuration of the second embodiment (FIGS. 6 and 7) can be appropriately used as a positioning member.
Further, the connection member 30 is not limited to the steel pipe connection member 30 (see FIGS. 1 and 2) having the expansion / contraction mechanism 35 as in the first embodiment, but also the wire 36 and the turnbuckle as in the third embodiment. It is good also as the connection member 30 (refer FIG. 8) using 37.
According to the fourth embodiment, the same effect as that of the first embodiment described above can be obtained. Furthermore, the welding position between the lower end 22 of the upper column 20 and the surface of the diaphragm 19 can be made higher than the beam member 16, and the automatic welding machine 40 can be arranged directly beside the welding position.

[Modification]
Note that the present invention is not limited to the above-described embodiments, and modifications and the like within a scope in which the object of the present invention can be achieved are included in the present invention.
The connection member 30 is not limited to the connection member 30 (see FIGS. 1 and 2) made of steel pipe having the expansion and contraction mechanism 35 described above, the connection member 30 (see FIG. 8) using the wire 36 and the turnbuckle 37, and a cross section. An L-shaped steel material, an H-shaped steel material, or a T-shaped steel material may be used. Even when these steel materials are used, it is preferable to provide the expansion / contraction mechanism 35 in the middle.
The extension mechanism 35 is not limited to the so-called “giraffe” structure as in the first embodiment. For example, if a nut is fixed to one steel pipe, a head of a bolt is fixed to the other steel pipe, and the bolt and nut are screwed together to form a pair of steel pipes, the series of steel pipes can connect the connection member 30. An intermediate portion 33 is formed, and an expansion / contraction mechanism 35 is formed by bolts and nuts in the middle. In such a connection member 30, by rotating the other steel pipe with respect to one steel pipe, the connection member 30 can be expanded and contracted to adjust the length.
The connection member 30 is not limited to a configuration in which the upper end portion 32 is connected to the bracket 27 of the upper column 20 with a bolt and nut, and the lower end portion 31 is connected to the bracket 17 of the lower column 10 with a bolt and nut, and other coupling means may be used. It may be used. Further, the steel pipe or the steel material of the connecting member 30 is not limited to a straight rod shape, and may be an L-shaped or arc-shaped member having a bent middle.

The steel pipe column 11 of the lower column 10, the intermediate column 13, and the steel tube column 21 of the upper column 20 are not limited to being hollow and having a square cross section, but may have other cross sectional shapes such as a circular cross section.
In the above embodiment, the lower column 10 having the column beam joint 12 on the upper surface is used and the upper column 20 is connected to the upper diaphragm 14, but the lower column 10 does not have the column beam junction 12. May be used. In this case, a diaphragm for connecting the upper column 20 may be fixed to the upper end of the steel pipe column 11 constituting the lower column 10.
In addition, the detailed configuration and shape dimensions of the column connection structures 1, 2, and 3 can be appropriately changed during implementation.

  The present invention can be used as a column connection structure and a column connection method.

  1, 2, 3, 4 ... Column connection structure, 10 ... Lower column, 11 ... Steel pipe column, 12 ... Column beam joint, 13 ... Intermediate column, 14, 15, 19 ... Diaphragm, 16 ... Beam material, 161 162 ... flange, 163 ... web, 17, 27 ... bracket, 18 ... column member, 20 ... upper column, 21 ... steel pipe column, 22 ... lower end, 30 ... connecting member, 31 ... lower end, 32 ... upper end, 33 ... Intermediate part, 34 ... work interval, 35 ... telescopic mechanism, 36 ... wire as intermediate part, 37 ... turn buckle as telescopic mechanism, 40 ... automatic welding machine, 41 ... rail, 42 ... torch, 51 ... positioning member Backing member, 52 ... contact member, 53 ... backing member, 54 ... engagement member which is a positioning member.

Claims (7)

A lower column with a diaphragm at the upper end;
An upper column whose lower end is welded to the diaphragm;
An upper end portion is fixed to the side surface of the upper column, a lower end portion is fixed to the diaphragm or a building member fixed to the diaphragm, and an intermediate portion between the upper end portion and the lower end portion and a side surface of the upper column a connecting member which automatic welding machine working distance can pass is formed between, were closed,
A positioning member for positioning the upper column is fixed to the diaphragm,
The positioning member, pillar connecting structure, wherein the backing member der Rukoto the fittable ring on the inner side of the lower end of the upper column. In the column connection structure according to claim 1,
The connection member is rod-shaped, and is inclined and arranged so as to be farther from the side surface of the upper column as it is closer to the lower end. In the column connection structure according to claim 1 or 2,
The column connection structure, wherein the connection member has an expansion / contraction mechanism that adjusts a length from the upper end to the lower end. 4. The column connection structure according to claim 1, wherein a contact member that contacts the backing member inserted from below is installed inside the upper column. Column connection structure characterized by In the column connection structure according to any one of claims 1 to 4 ,
The lower column has a column beam joint on the upper end side, and a beam extending in a lateral direction is connected to the column beam junction,
The column connection structure according to claim 1, wherein the diaphragm is disposed on the upper surface side of the column beam joint portion at the same height as the upper surface of the beam. A column connection method for welding and connecting the upper end surface of the lower column and the lower end surface of the upper column,
A diaphragm is formed on the upper end of the lower column, and an annular backing member that can be fitted inside the lower end of the upper column as a positioning member is fixed to the diaphragm.
In a state in which the upper column is positioned by the positioning member, an upper end is fixed to a side surface of the upper column and a lower end is fixed to the diaphragm or a building member fixed to the diaphragm, and a connection member is installed. A predetermined work interval is formed between the connecting member and the side surface of the upper column,
A column connecting method, wherein an automatic welder is installed at the work interval, the automatic welder makes a round along a side surface of the upper column, and a lower end of the upper column is welded to the diaphragm over the entire circumference. In the pillar connection method according to claim 6 ,
A column connecting method, wherein an abutting member that abuts against the backing member inserted from below is installed inside the upper column.

Images