JP6577122B1 - Column connection structure and column connection method - Google Patents

Abstract

Provided are a column connection structure and a column connection method capable of eliminating a portion protruding outward while ensuring the accuracy of the connection position and inclination of a column to be connected. A lower column, a tubular upper column having a lower end connected to an upper end of the lower column, and a lower end of the upper column fixed to the upper end of the lower column. A lower pillar using a cylindrical core member 41 that can be inserted from the opening and a plurality of clamping members (bolts 44) that are installed at predetermined height positions of the upper pillar 30 and can be advanced into the upper pillar 30 respectively. 10, the upper column 30 is approached from above, the core member 41 is inserted into the upper column 30 from the lower end opening of the upper column 30, the clamping member is advanced and brought into contact with the core member 41, and the upper column with respect to the lower column 10 Adjust the horizontal position and tilt of 30. [Selection] Figure 1

Description

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

In a steel structure building, a steel column and a steel beam prefabricated in a factory are brought into a construction site and connected to each other to form a column beam structure. Steel pipe columns are frequently used for steel columns, and H-section steel is frequently used for steel beams. At the upper end of the steel column on the lower floor, a column beam joint formed by two diaphragms and a short steel pipe column is used to connect the steel beam.
In the connection between the steel column and the beam-column joint, temporary fixing with an erection piece is performed, and after the connection position and the inclination of the steel column are adjusted, permanent fixing by welding is performed (see Patent Document 1).

  The erection piece is a plate that connects the connection piece fixed to the outer surface of the steel column on the upper floor and the connection piece fixed to the steel column or steel beam on the lower floor, and attaches each connection piece with multiple bolts. It is concluded. When welding the upper steel column, adjust the horizontal position, vertical height, and tilt of the steel column to the appropriate state with the bolts of the erection piece loosened, and erection again. Tighten the piece bolt. With such an erection piece, the upper and lower steel columns are temporarily fixed, and the lower end of the upper steel column is welded to the lower steel column (the upper surface of the beam-column joint). Thus, the steel column on the upper floor and the steel column on the lower floor can be permanently fixed at an appropriate position and inclination.

Prior to temporary fixing with the erection piece, various jigs are used to adjust the horizontal position, vertical height, and inclination of the steel column to an appropriate state.
In order to properly adjust the horizontal position and vertical height between the lower end of the steel column on the upper floor and the upper surface of the beam-column joint, a guide member that engages with the lower end opening of the steel column on the upper surface of the beam-column joint, An adjustable contact member is used on the outer peripheral surface of the lower end of the steel column (see Patent Document 2).
In order to adjust the inclination of the steel column on the upper floor, a construction member that connects the upper part of the steel column on the upper floor and the steel beam is used. As the building member, a rod-shaped member using a turnbuckle, a wire extending from a steel column in all directions, or the like is used (see Patent Document 3).

  Robot welding using an automatic welding machine has been introduced for the work of fixing steel columns on the upper floor by welding. In robot welding, an annular rail is installed around a steel column, and an automatic welder runs along the rail. In robot welding, it is desirable to be able to go around the steel column. However, when the erection piece is used, interference between the erection piece and the automatic welding machine occurs. For this reason, 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 4).

Japanese Patent No. 2670735 JP 2004-68385 A JP 11-217939 A JP-A-2018-53626

The connection position and the inclination of the steel column can be appropriately adjusted by the above-described erection piece, abutting member, and construction member, but these project over the outside of the steel column. Among them, the building member is disposed so as to connect the upper part of the steel column and the upper surface of the steel beam, and interference with surrounding work is inevitable.
Further, at the lower end of the steel column, the erection piece and the abutting member project outward, which may interfere with the welding operation for the main fixing. In particular, when robot welding is performed, the work is divided into sections between the erection pieces.
Furthermore, the above-described erection piece, abutting member, and construction member each have a large number of parts, are difficult to assemble, and have difficulty in improving work efficiency.
Therefore, in order to perform the work efficiently, it is required to adjust the connection position and inclination of the steel column while minimizing the portion protruding outward from the steel column as much as possible and to improve the work efficiency. It was done.

  An object of the present invention is to provide a column connection structure and a column connection method capable of eliminating the portion protruding outward while ensuring the accuracy of the connection position and inclination of the columns to be connected.

The column connection structure of the present invention includes a lower column, a tubular upper column whose lower end is connected to the upper end of the lower column, and a lower column that is fixed to the upper end of the lower column and can be inserted from the lower end opening of the upper column A cylindrical core member, a plurality of clamping members that are installed at a predetermined height position of the upper column, advance to the inside of the upper column, and have tips that can contact the surface of the core member; and the core member And a reinforcing member that reinforces a portion of the core member that is in contact with the clamping member .

  In the present invention, a cylindrical member that can be inserted into the upper column, such as a steel pipe having a circular cross section, can be used as the core member. As the clamping member, a bolt that penetrates each surface of the upper column can be used. It is preferable that the sets of the plurality of clamping members are installed at equal intervals in the circumferential direction at a predetermined height position of the upper column. For example, when the upper column is a quadrangular column, four clamping members can be arranged for each surface, and the core member can be clamped in the crossing direction by each pair of clamping members. On the other hand, the pinching member is not limited to an even number, and the core member may be pinched at the center by three or five or more pinching members such as when the upper column is cylindrical.

As described above, in the present invention, by holding the core member with the holding member, the horizontal position of the upper column with respect to the core member, that is, the horizontal position with respect to the lower column can be adjusted and determined.
Here, if the clamping member is installed at a relatively high position of the upper column, the horizontal position with respect to the lower column can be adjusted and determined at a higher position of the core member, whereby the inclination of the upper column with respect to the core member, that is, the lower column. Can also be adjusted.
Therefore, in the present invention, it is possible to secure the accuracy of the connection position or the accuracy of the inclination while eliminating the portion projecting outside the column by the core member and the clamping member.

Furthermore, in the present invention, the core member is fixed to the lower column, the clamping member is installed on the upper column, and the core member is inserted into the upper column and clamped by the clamping member at the site. Columns can be connected, the number of parts can be reduced, and assembly work can be simplified.
In particular, in the present invention, since the core member is cylindrical, it can be held by the holding member regardless of the angular position around the central axis of the upper column and the lower column. If the core member is, for example, a rectangular cylinder, the tip of the clamping member may be in contact with the side surface of the core member at an angle if the angular position of the core member and the clamping member does not match, and proper clamping cannot be performed. There is a possibility that extra work may be required for the angular alignment between the upper column and the core member. On the other hand, if the core member is cylindrical, regardless of the relative angular position, it is only necessary to apply the clamping member to the largest diameter portion of the core member so that the work efficiency can be improved.
Furthermore, in the present invention, since the reinforcing member is provided on the side opposite to the holding member of the core member and reinforces the portion with which the holding member of the core member comes into contact, even if the holding by the holding member is a large force Further, deformation of the core member can be prevented, and appropriate horizontal position adjustment or inclination adjustment can be realized.
In the present invention, as the reinforcing member, a beam member, a cross member, a lattice member, a diaphragm, or the like that connects the back sides of the contact portion in order to prevent the dent of the portion where the holding member abuts can be used. Thick members and ribs that are stretched on the inner side and disperse the force from the clamping member can be used.

In the column connection structure of the present invention, it is preferable that the upper column is provided with a plurality of clamping members at a plurality of height positions.
In such this invention, the horizontal position of the upper column with respect to a core member can be set for every height by the set of a some clamping member. That is, after adjusting the horizontal position of the upper column with respect to the lower column by the lower set, the inclination of the upper column with respect to the lower column can be adjusted and determined by the upper set.
Therefore, according to the present invention, it is possible to secure the accuracy of the connection position and the accuracy of the inclination while eliminating the portion protruding to the outside of the column by the core member and the clamping member.

In the column connection structure of the present invention, the upper locking member that can be locked to the lower column when it is installed on the upper column and the lower column approaches, and the upper column that is installed on the lower column It is preferable to have at least one of the lower side locking members that can lock the upper column when they approach each other.
In the present invention, when the core member is inserted into the lower end opening of the upper column and the lower end of the upper column is brought close to the upper end of the lower column, the upper locking member and / or the lower locking member Movement is restricted, a predetermined gap is secured between the lower end of the upper column and the upper end of the lower column, and this gap can be used as a groove for welding.

In the column connection structure of the present invention, it is preferable to have a backing member that is installed on the upper column or the lower column and covers the inner edge of the lower end opening of the upper column.
In the present invention, the backing member installed on the upper column can be a backing member by fixing a belt-like member inside the upper column in advance. As a backing member installed on the lower column, a flat cylindrical member (such as a ring-shaped member connected in a ring) that can be fitted into the lower column opening of the upper column is fixed in advance to the upper end of the lower column. In addition, when the upper column is connected to the lower column, it may be configured as a backing member by being fitted into the lower end opening of the upper column.
With such a backing member, it is possible to ensure the backing of the groove for welding.

The column connection method of the present invention includes a lower column, a tubular upper column whose lower end is connected to the upper end of the lower column, and a lower column that is fixed to the upper end of the lower column and can be inserted from the lower end opening of the upper column. A plurality of core members, a plurality of cylindrical pinching members that are installed at a predetermined height position of the upper column, advance to the inside of the upper column, and whose tips can contact the surface of the core member, and the core member A reinforcing member that is disposed on the opposite side of the sandwiching member and reinforces a portion of the core member that contacts the sandwiching member, and causes the upper column to approach from above the lower column, A member is inserted into the upper column from the lower end opening of the upper column, the clamping member is advanced to contact the core member from the opposite side of the reinforcing member, and the horizontal position of the upper column with respect to the lower column; One of the inclinations is adjusted.
In the present invention as described above, the effects as described in the column connection structure of the present invention described above can be obtained.

  According to the present invention, it is possible to provide a column connection structure and a column connection method capable of eliminating the portion protruding outward while ensuring the connection position and inclination accuracy of the columns to be connected and improving the work efficiency.

The side view which shows one Embodiment of the column connection structure of this invention. The side view which shows the connection operation | work of the said embodiment. Sectional drawing which shows the upper part of the core member of the said embodiment. Sectional drawing which shows the lower part of the core member of the said embodiment.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
In FIG. 1, a column beam structure 1 is formed by connecting a steel beam 20 to an upper end side surface of a lower column 10 and connecting an upper column 30 to an upper end of the lower column 10.

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.

The steel beam 20 is an H-shaped steel having a cross section formed into an H shape by upper and lower flanges 21 and 22 and a web 23.
The steel beam 20 is bolted to the bracket 16 installed on the intermediate column 13 of the beam-column joint 12 and the upper and lower flanges 21 and 22 are welded to the diaphragms 14 and 15. It is fixed to the side.

The upper column 30 is composed of a steel tube column 31 having the same cross section as the steel tube column 11.
The upper column 30 is fixed to the upper end of the lower column 10 (the upper surface of the diaphragm 14) by welding the outer edge of the lower end 32 to the entire upper surface of the diaphragm 14. In welding, the horizontal position and inclination of the upper column 30 with respect to the lower column 10 are adjusted in advance.
In order to perform this adjustment, an adjustment mechanism 40 is installed between the upper column 30 and the lower column 10.

  As shown in FIGS. 2, 3, and 4, as the adjustment mechanism 40, a backing member 42 that doubles as a core member 41 and a lower locking member is provided on the upper surface of the diaphragm 14 (the upper end of the lower column 10). The upper pillar 30 is provided with a stopper member 43 as an upper locking member and a bolt 44 as a clamping member.

The core member 41 is configured by a cylindrical steel pipe having an outer diameter smaller than the distance between the inner side surfaces of the upper column 30. The core member 41 is fixed by welding the lower end to the upper surface of the diaphragm 14 and can be inserted into the lower end opening of the upper column 30 (see FIG. 2).
Inside the core member 41, a cross-shaped reinforcing member 45 (see FIGS. 2 and 3) is installed near the upper end. The reinforcing member 45 is formed by combining plate-shaped steel materials in a cross shape, and each tip is welded and fixed to the inner side surface of the core member 41.

The backing member 42 is a flat cylindrical body (see FIG. 3) having a shape along the inside of the lower end opening of the upper column 30, and is formed by bending a strip-shaped steel material, for example. The backing member 42 is fixed by welding the lower edge to the upper surface of the diaphragm 14 all around and the upper edge side can be inserted into the lower end opening of the upper column 30.
When the upper column 30 and the lower column 10 are connected, the backing member 42 is held so as to cover the inner edge of the lower end opening (see FIG. 1) and can be used as a backing during welding.
A predetermined gap is secured between the backing member 42 and the inside of the lower end opening of the upper column 30, and they can be displaced with respect to each other before the upper column 30 and the lower column 10 are welded.

The stopper member 43 is a plate-shaped steel material fixed by welding in the vicinity of the lower end 32 of the inner surface of the upper column 30, and a plurality of the stopper members 43 are arranged at the same height (see FIGS. 1 and 2). The plurality of stopper members 43 are intermittently disposed two on each side surface of the upper column 30 (see FIGS. 2 and 4).
When the upper column 30 and the lower column 10 are connected, the stopper member 43 is locked by contacting the backing member 42 (see FIG. 1), and the proximity between the upper column 30 and the lower column 10. And a predetermined interval can be secured between the lower end 32 of the upper column 30 and the upper surface of the diaphragm 14.

The bolt 44 is screwed into a screw hole formed in the upper column 30, and the inner tip can be advanced to the center of the upper column 30 by operating the outer head, and by operating in the reverse direction. Retreat is possible.
One bolt 44 is installed on each side surface of the upper column 30 at two heights near and below the lower end 32 of the upper column 30 (see FIGS. 1 and 2).

  Each of the bolts 44 (upper set 46) installed at a high position of the upper column 30 is in contact with a portion of the surface of the core member 41 where the reinforcing member 45 is connected to the back side, and is opposed to the crossing direction. By sandwiching the core member 41 between each pair, the horizontal position of the upper column 30 and the core member 41 at the height position can be adjusted (see FIGS. 1 and 3).

  The bolts 44 (lower set 47) installed at the lower position of the upper column 30 are respectively in contact with the surface of the core member 41 and sandwich the core member 41 between each pair facing each other in the crossing direction. The horizontal position of the upper column 30 and the core member 41 at the height position can be adjusted (see FIGS. 1 and 4).

Next, connection work between the upper column 30 and the lower column 10 in the present embodiment will be described.
Prior to the connection work, the core member 41 and the backing member 42 are fixed to the lower column 10. A stopper member 43 is fixed to the upper column 30. Bolts 44 are attached to the upper column 30, but are in a sufficiently retracted state (a state where the upper column 30 has moved to the outside of the upper column 30).
In the connection work, first, the upper column 30 is approached from above the lower column 10 (state of FIG. 2), and the core member 41 is inserted into the upper column 30 from the lower end opening of the upper column 30. When the upper column 30 is close to the diaphragm 14, the backing member 42 is introduced into the lower end opening of the upper column 30 and is held in a state where the backing member 42 and the stopper member 43 are in contact (temporarily fixed state) (see FIG. 1 state).

Next, with the upper column 30 temporarily held by the lower column 10 via the backing member 42 and the stopper member 43, the bolts 44 of the lower set 47 are advanced, and each pair of core members is advanced one by one. 41 is sandwiched. At this time, the horizontal position with respect to the lower column 10 (diaphragm 14) of the upper column 30 is adjusted to a predetermined position by an operation of moving each pair of bolts 44 back and forth.
The gap is secured between the backing member 42 and the upper column 30 as described above, and does not hinder the adjustment of the horizontal position by the bolts 44 of the lower set 47.

Subsequently, the bolts 44 of the upper set 46 are advanced, and the core member 41 is sandwiched between each pair. At this time, the horizontal position with respect to the lower column 10 (diaphragm 14) of the upper column 30 is adjusted by an operation of moving each pair of bolts 44 back and forth.
As described above, the horizontal position of the lower end 32 of the upper column 30 is determined by the lower set 47, and the adjustment of the horizontal position by the upper set 46 is the adjustment of the inclination of the upper column 30. Therefore, by adjusting the upper set 46, the inclination of the upper column 30 with respect to the lower column 10 is adjusted to a predetermined inclination.

  When the horizontal position and the inclination of the upper column 30 can be adjusted by the above operation, the outer peripheral edge of the lower end 32 is welded over the entire circumference. Thereby, the upper column 30 that has been temporarily fixed is completely fixed to the upper end of the lower column 10 (the upper surface of the diaphragm 14).

According to this embodiment, the following effects can be obtained.
In the present embodiment, among the bolts 44 that are clamping members, the core member 41 is clamped by the lower set 47 to adjust the horizontal position of the upper column 30 relative to the core member 41, that is, the horizontal position relative to the lower column 10, It can be confirmed.
Further, by clamping the core member 41 with the upper set 46 among the bolts 44 that are the clamping members, the horizontal position with respect to the lower column 10 can be adjusted and determined at a high position of the core member 41, thereby 41, that is, the inclination of the upper column 30 with respect to the lower column 10 can be adjusted.

In particular, in the present embodiment, the horizontal position of the upper column 30 relative to the core member 41 can be set for each height by a set of a plurality of clamping members (upper set 46 and lower set 47). That is, after adjusting the horizontal position of the upper column 30 with respect to the lower column 10 by the lower set 47, the inclination of the upper column 30 with respect to the lower column 10 can be adjusted and determined by the upper set 46. .
Therefore, according to the present embodiment, it is possible to ensure the accuracy of the connection position and the inclination while eliminating the portion protruding to the outside of the pillar by the core member 41 and the bolt 44 that is the clamping member.

In this embodiment, since the core member 41 is cylindrical, it can be clamped by the bolts 44 regardless of the angular position around the central axis of the upper column 30 and the lower column 10.
For example, if both the upper column 30 and the core member 41 are square cylinders, there is a possibility that the tip end of the bolt 44 is in contact with the side surface of the core member 41 obliquely depending on the angular position, and proper clamping cannot be performed. In addition, extra work may be required for the angular alignment between the upper column 30 and the core member 41.
On the other hand, if the core member 41 is cylindrical, it is only necessary to apply the bolt 44 to the portion with the maximum diameter so that the core member 41 is clamped, and the work efficiency can be improved by simplifying the work.

In the present embodiment, the reinforcing member 45 that reinforces the portion sandwiched by the bolts 44 is installed at the height of the upper set 46 of the core member 41. For this reason, even if the clamping by the bolt 44 is a large force, the deformation of the core member 41 can be prevented, and appropriate horizontal position adjustment or inclination adjustment can be realized.
In particular, since a cross member is used as the reinforcing member 45 and the back side of the portion with which the bolt 44 abuts is reinforced, the reinforcing effect can be maximized.

  In the present embodiment, when the core member 41 is inserted into the lower end opening of the upper column 30 and the lower end 32 of the upper column 30 is brought close to the upper end of the lower column 10 (the upper surface of the diaphragm 14), a stopper which is an upper locking member. The member 43 and the backing member 42 that also serves as the lower locking member engage with each other to restrict mutual movement. For this reason, a predetermined gap can be secured between the lower end 32 of the upper column 30 and the upper end of the lower column 10, and this gap can be used as a groove for welding.

  In this embodiment, the backing member 42 is installed on the upper end of the lower column 10 (the upper surface of the diaphragm 14) so as to cover the inner edge of the lower end opening of the upper column 30, so the backing of the groove for welding is supported. Can be secured.

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.
In the embodiment described above, the core member 41 is a cylindrical steel pipe. However, the core member 41 may be, for example, a bottomed cylindrical shape, may be filled with a filler, and may be solid, and the outer peripheral surface is a cylindrical surface. A cylindrical core member may be used.

In the above-described embodiment, the bolts 44 as clamping members are installed at a plurality of heights of the upper set 46 and the lower set 47, but these may be only one height.
When only the lower set 47 is installed, only the position adjustment of the lower end 32 of the upper column 30 can be performed. Other erection wires can be used to adjust the tilt.
When only the upper set 46 is installed, the horizontal position is constrained by reducing the distance between the lower end 32 and the backing member 42, and this can be used for adjusting only the inclination of the upper column 30.

In the embodiment described above, the cross-shaped reinforcing member 45 is installed inside the core member 41. However, as the reinforcing member, a beam material, a lattice material, a diaphragm, or the like can be used, and it is stretched and held inside the core member. Thick members and ribs that disperse the force from the members can be used. Furthermore, although not included in the present invention, the reinforcing member is not limited to a member that directly reinforces the back side of the portion with which the bolt 44 is abutted, and can be used as long as deformation of the portion can be prevented even at a remote portion. it can.

In the embodiment described above, the backing member 42 is also used as the lower locking member, the stopper member 43 is installed as the upper locking member, and the upper column 30 is temporarily fixed to the lower column 10 by engaging each of them. However, it is not essential to install both of them and engage with each other. Further, it is not essential to use the backing member 42 as the lower locking member, and the lower locking member and the backing member 42 may be provided separately.
For example, a plate-like lower locking member may be installed on the surface of the diaphragm 14 to receive the lower end of the upper column 30, and a block-shaped upper locking member protruding from the lower end 32 inside the upper column 30. May be installed and brought into contact with the diaphragm 14. In short, it is sufficient that a predetermined gap can be secured between the lower end 32 of the upper column 30 and the upper end of the lower column 10 (the upper surface of the diaphragm 14).

  In the embodiment described above, the backing member 42 ensures the backing of the groove for welding the lower end 32 of the upper column 30 to the upper end of the lower column 10 (the upper surface of the diaphragm 14). Such a backing member 42 is not limited to the belt-like member fixed to the upper surface of the diaphragm 14 as in the above-described embodiment, but a belt-like member is fixed inside the lower end opening of the upper column 30. Also good.

  In addition, the lower column 10 is not limited to the one composed of the column beam joint 12 and the steel pipe column 11, but may be of an appropriate configuration, for example, a diaphragm 14 stretched on the upper end of H-shaped steel. What is necessary is just to select suitably structures, such as the steel beam 20, in implementation.

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

  DESCRIPTION OF SYMBOLS 1 ... Column beam structure, 10 ... Lower column, 11 ... Steel pipe column, 12 ... Column beam junction, 13 ... Intermediate column, 14, 15 ... Diaphragm, 16 ... Bracket, 20 ... Steel beam, 21, 22 ... Flange , 23 ... web, 30 ... upper column, 31 ... steel pipe column, 32 ... lower end, 40 ... adjustment mechanism, 41 ... core member, 42 ... backing member that also serves as a lower locking member, 43 ... upper locking member Stopper member, 44: bolt as a clamping member, 45: reinforcing member, 46: upper set, 47: lower set.

Claims (5)

A lower column, a tubular upper column whose lower end is connected to the upper end of the lower column, a columnar core member fixed to the upper end of the lower column and insertable from the lower end opening of the upper column, A plurality of clamping members installed at a predetermined height position of the upper column, each of which extends to the inside of the upper column and whose tip can contact the surface of the core member, and on the opposite side of the core member to the clamping member And a reinforcing member that reinforces a portion of the core member that contacts the clamping member .   2. The column connection structure according to claim 1, wherein the upper column is provided with a plurality of the clamping members at a plurality of height positions. 3. In the column connection structure according to claim 1 or 2 ,
An upper locking member that is installed on the upper column and can lock the lower column when the lower column approaches, and an upper column that is installed on the lower column and the upper column approaches A column connection structure characterized by having at least one of lower locking members capable of locking. In the column connection structure according to any one of claims 1 to 3 ,
A column connection structure comprising a backing member that is installed on the upper column or the lower column and covers an inner edge of a lower end opening of the upper column. A lower column, a tubular upper column whose lower end is connected to the upper end of the lower column, a columnar core member fixed to the upper end of the lower column and insertable from the lower end opening of the upper column, A plurality of clamping members installed at a predetermined height position of the upper column, each of which extends to the inside of the upper column and whose tip can contact the surface of the core member, and on the opposite side of the core member to the clamping member A reinforcing member that is installed and reinforces a portion of the core member with which the clamping member comes into contact , and
The upper column is approached from above the lower column, the core member is inserted into the upper column from the lower end opening of the upper column,
A column connecting method, wherein the clamping member is advanced and brought into contact with the core member from the opposite side of the reinforcing member to adjust either the horizontal position or the inclination of the upper column with respect to the lower column.

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