JP2020070619A - Column joint structure and column joint method - Google Patents

Abstract

A column connection structure and a column connection method capable of eliminating portions projecting outward while ensuring the accuracy of the connection position and inclination of the columns to be connected are provided. A lower post (10), a tubular upper post (30) whose lower end is connected to the upper end (upper surface of a diaphragm (14)) of the lower post (14), and a lower end of the upper post (30) fixed to the upper end of the lower post (10). A cylindrical core member 41 that can be inserted through an opening, and a plurality of clamping members (bolts 44) that are installed at predetermined height positions on the upper pillar 30 and that can each advance to the inside of the upper pillar 30 are used. 10, the core member 41 is inserted into the upper pillar 30 from the lower end opening of the upper pillar 30, the holding member is advanced to abut on the core member 41, and the upper pillar against the lower pillar 10. Adjust the horizontal position and tilt of 30. [Selection drawing] Fig. 1

Description

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

In a steel structure building, steel columns and steel beams, which have been prefabricated in a factory, are carried into a construction site and connected to each other to form a beam structure. Steel pipe columns are often used for steel columns, and H-shaped steel is often used for steel beams. At the upper end of the steel column on the lower floor, a beam-column 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 by an erection piece is performed, the connection position and inclination of the steel column are adjusted, and then main fixing is performed by welding (see Patent Document 1).

  The erection piece is a plate material 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 the steel beam on the lower floor, and connects each connection piece with multiple bolts. It is concluded. When welding the steel columns on the upper floor, loosen the bolts of the erection piece, adjust the horizontal position, vertical height of the steel columns on the upper floor, and the inclination of the steel columns to the appropriate state, and then restart the erection. Tighten the bolts on the piece. Weld the lower end of the upper steel column to the lower steel column (upper surface of the beam-column joint) while temporarily fixing the upper and lower steel columns with such an erection piece. Thus, the steel columns on the upper floor and the steel columns on the lower floor can be permanently fixed at appropriate positions and inclinations.

Various jigs are used to adjust the horizontal position, the vertical height, and the inclination of the steel column of the upper floor to an appropriate state prior to the temporary fixing by the erection piece.
In order to properly adjust the horizontal position and the 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 or 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 erection member connecting the upper portion of the steel column on the upper floor and the steel beam is used. As the erection 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 welder has been introduced for the work of welding and fixing the steel columns on the upper floor. In robot welding, an annular rail is installed around a steel column, and an automatic welding machine runs along the rail. In robot welding, it is desirable to be able to go around the steel column once. However, when using the erection piece, interference occurs between the erection piece and the automatic welding machine. Therefore, 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-A-11-217939 JP, 2008-53626, A

The connection position and the inclination of the steel column can be appropriately adjusted by the erection piece, the contact member, and the erection member described above, but these are each projected to the outside of the steel column. Above all, the erection member is arranged so as to connect the upper part of the steel frame column and the upper surface of the steel frame beam, and interference with the surrounding work is inevitable.
Further, at the lower end of the steel column, the erection piece and the contact member may project outward, which may interfere with the welding work for the main fixing. Particularly, when robot welding is performed, the work is divided into sections between the erection pieces.
Further, the erection piece, the contact member, and the erection member described above each have a large number of parts, and the assembly thereof is complicated, so that it is difficult to improve work efficiency.
Therefore, in order to perform the work efficiently, it is necessary to make the connecting position and the inclination of the steel column possible and to make the portion protruding outward from the steel column as small as possible and to improve the work efficiency. It was being done.

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

  The pillar connection structure of the present invention is a lower pillar, a tubular upper pillar whose lower end is connected to the upper end of the lower pillar, and fixed to the upper end of the lower pillar so that it can be inserted from the lower end opening of the upper pillar. It has a columnar core member, and a plurality of pinching members which are installed at a predetermined height position of the upper pillar and can each advance to the inside of the upper pillar.

  In the present invention, as the core member, 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 holding member, a bolt or the like that penetrates each surface of the upper pillar can be used. It is preferable that the plurality of sets of sandwiching members are installed at equal height intervals in the circumferential direction at predetermined height positions of the upper pillar. For example, when the upper column is a quadrangular prism, four sandwiching members can be arranged on each surface and each pair of sandwiching members can sandwich the core member in the intersecting direction. On the other hand, the sandwiching member is not limited to an even number, and the core member may be sandwiched in the central portion by three or five or more sandwiching members such as when the upper column is cylindrical.

As described above, in the present invention, by sandwiching the core member with the sandwiching 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 sandwiching member is installed at a relatively high position of the upper pillar, the horizontal position with respect to the lower pillar can be adjusted and determined at the high position of the core member, which allows the inclination of the upper pillar with respect to the core member, that is, the lower pillar. Can also be adjusted.
Therefore, according to the present invention, the accuracy of the connection position or the accuracy of the inclination can be ensured while eliminating the portion protruding to the outside of the column by the core member and the sandwiching member.

Further, in the present invention, the core member is fixed to the lower pillar, the sandwiching member is installed on the upper pillar, and the core member is inserted into the upper pillar and sandwiched by the sandwiching member at the site, thereby making Pillars 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 has a cylindrical shape, it can be sandwiched by the sandwiching member regardless of the angular positions of the upper column and the lower column around the central axis. If the core member is, for example, a quadrangular cylinder, unless the angular positions of the core member and the sandwiching member are aligned, the tip of the sandwiching member abuts the side surface of the core member obliquely, and proper sandwiching may not be possible. 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 suffices to apply the sandwiching member to the maximum diameter portion of the core member to sandwich the core member, thereby improving the working efficiency.

In the pillar connection structure of the present invention, it is preferable that the upper pillar be provided with a plurality of the sandwiching members at a plurality of height positions.
In the present invention as described above, the horizontal position of the upper column with respect to the core member can be set for each height by setting a plurality of holding members. That is, by adjusting the horizontal position of the upper pillar with respect to the lower pillar by the lower set, the inclination of the upper pillar with respect to the lower pillar can be adjusted and determined by the upper set.
Therefore, in the present invention, the accuracy of the connection position and the accuracy of the inclination can be ensured while eliminating the portion protruding to the outside of the column by the core member and the sandwiching member.

In the pillar connection structure of the present invention, it is preferable that a reinforcing member that reinforces a portion sandwiched by the sandwiching member is installed on the core member.
According to the present invention as described above, even if the clamping by the clamping member is a large force, it is possible to prevent the core member from being deformed, and it is possible to realize an appropriate horizontal position adjustment or inclination adjustment.
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 contacting portions to each other to prevent the depression of the contacting portions of the sandwiching member can be used. It is possible to use a thick member or a rib that is stretched inside and disperses the force from the sandwiching member.

In the pillar connection structure of the present invention, an upper locking member that is installed on the upper pillar and can lock the lower pillar when the lower pillar approaches, and the upper pillar that is installed on the lower pillar. It is preferable to have at least one of a lower side locking member capable of locking the upper side column when the two approach each other.
In the present invention as described above, when the core member is inserted into the lower end opening of the upper pillar and the lower end of the upper pillar is brought close to the upper end of the lower pillar, the mutual engagement is made by at least one of the upper locking member and the lower locking member. Is restricted, and 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 pillar connection structure of the present invention, it is preferable to have a backing member installed on the upper pillar or the lower pillar to cover an inner edge of a lower end opening of the upper pillar.
In the present invention, as the backing member installed on the upper pillar, a belt-shaped member can be fixed to the inside of the upper pillar in advance to form the backing member. As the backing member installed on the lower pillar, a flat tubular member (such as a belt-shaped member connected in an annular shape) that can be fitted into the lower end opening of the upper pillar is previously fixed to the upper end of the lower pillar. Alternatively, when the upper pillar is connected to the lower pillar, the backing member may be fitted in the lower end opening of the upper pillar.
With such a backing member, a backing of the groove for welding can be secured.

The pillar connection method of the present invention includes a lower pillar, a tubular upper pillar having a lower end connected to an upper end of the lower pillar, and a fixed upper end of the lower pillar that can be inserted from a lower end opening of the upper pillar. A core member and a columnar holding member that is installed at a predetermined height position of the upper pillar and is capable of advancing inside the upper pillar, respectively, by approaching the upper pillar from above the lower pillar. Then, the core member is inserted into the upper side column from the lower end opening of the upper side column, and the sandwiching member is advanced to abut against the core member, either of the horizontal position and the inclination of the upper side column with respect to the lower side column. It is characterized by adjusting or.
In the present invention as described above, it is possible to obtain the effects as described in the above-mentioned pillar connection structure of the present invention.

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

The side view which shows one Embodiment of the pillar connection structure of this invention. The side view which shows the connection 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.

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

The lower column 10 has a vertically arranged hollow steel tube column 11 having a rectangular cross section, and a column-beam joint 12 at its upper end.
The beam-column joint portion 12 has an intermediate column 13 having the same cross section as that of the steel pipe column 11 but a short length, and diaphragms 14 and 15 are fixed to the upper surface and the lower surface thereof by welding all around.
The beam-column joint portion 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 over the entire circumference.

The steel beam 20 is an H-shaped steel having an H-shaped cross section formed by the upper and lower flanges 21 and 22 and the web 23.
The steel beam 20 is bolted to the bracket 16 installed on the intermediate column 13 of the beam-column joint portion 12, and the upper and lower flanges 21 and 22 are welded to the diaphragms 14 and 15, whereby the steel pipe column 11 is welded. It is fixed to the side.

The upper column 30 is composed of a steel pipe column 31 having the same cross section as the steel pipe column 11.
The upper pillar 30 is fixed to the upper end of the lower pillar 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. Before 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 adjusting mechanism 40 is installed between the upper pillar 30 and the lower pillar 10.

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

The core member 41 is made of a cylindrical steel pipe having an outer diameter smaller than the distance between the inner side surfaces of the upper column 30. The lower end of the core member 41 is fixed to the upper surface of the diaphragm 14 by welding all around, and the upper end side 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 surface of the core member 41.

The backing member 42 is a flat tubular body (see FIG. 3) having a shape along the inside of the lower opening of the upper column 30, and is formed by bending a strip-shaped steel material, for example. The lower edge of the backing member 42 is fixed to the upper surface of the diaphragm 14 by welding, and the upper edge side can be inserted into the lower end opening of the upper column 30.
The backing member 42 is held so as to cover the inner edge of the lower end opening when the upper column 30 and the lower column 10 are connected (see FIG. 1), and can be used as a backing during welding.
The backing member 42 secures a predetermined gap between the backing member 42 and the inside of the lower end opening of the upper column 30, and is displaceable relative 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 stopper members 43 are arranged at the same height (see FIGS. 1 and 2). Two stopper members 43 are intermittently arranged on each side surface of the upper pillar 30 (see FIGS. 2 and 4).
The stopper member 43 is locked by coming into contact with the backing member 42 when the upper column 30 and the lower column 10 are connected (see FIG. 1), and the upper column 30 and the lower column 10 are brought close to each other. It is possible to secure a predetermined distance between the lower end 32 of the upper column 30 and the upper surface of the diaphragm 14 by regulating the above.

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 opposite direction. It is possible to retreat.
One bolt 44 is installed on each side surface of the upper column 30 at two heights near the lower end 32 of the upper column 30 and above it (see FIGS. 1 and 2).

  The bolts 44 (upper set 46) installed at the high position of the upper pillar 30 have their tips abutted on the surface of the core member 41 where the reinforcing member 45 is connected to the back side and face each other in the intersecting 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 (the lower set 47) installed at the lower position of the upper column 30 have their tips abutted against the surface of the core member 41, and sandwich the core member 41 with each pair facing each other in the intersecting 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, the connecting work between the upper pillar 30 and the lower pillar 10 in this embodiment will be described.
Prior to the connecting 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 pillar 30. Although the bolts 44 are attached to the upper pillar 30, the bolts 44 are kept sufficiently retracted (moved to the outside of the upper pillar 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 pillar 30 approaches the diaphragm 14, the backing member 42 is introduced into the lower end opening of the upper pillar 30, and the backing member 42 and the stopper member 43 are held in contact with each other (temporarily fixed state) (FIG. 1 state).

Next, while the upper pillar 30 is temporarily held by the lower pillar 10 via the backing member 42 and the stopper member 43, the bolts 44 of the lower set 47 are advanced, and the pair of core members are paired. 41 is clamped. At this time, the horizontal position with respect to the lower pillar 10 (diaphragm 14) of the upper pillar 30 is adjusted to a predetermined position by the operation of advancing and retracting each pair of bolts 44.
A gap is secured between the backing member 42 and the upper pillar 30 as described above, and does not hinder the horizontal position adjustment by the bolt 44 of the lower set 47.

Then, the bolts 44 of the upper set 46 are respectively advanced to sandwich the core member 41 by each pair. At this time, the horizontal position of the upper pillar 30 with respect to the lower pillar 10 (diaphragm 14) is adjusted by moving the pair of bolts 44 forward and backward.
As described above, the horizontal position of the lower end 32 of the upper pillar 30 is fixed by the lower set 47, and the horizontal position adjustment by the upper set 46 is the tilt adjustment of the upper pillar 30. Therefore, the inclination of the upper pillar 30 with respect to the lower pillar 10 is adjusted to a predetermined inclination by adjusting the upper set 46.

  After the horizontal position and 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. As a result, the upper pillar 30 that has been temporarily fixed is completely fixed to the upper end of the lower pillar 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 the holding members, by holding the core member 41 with the lower set 47, the horizontal position of the upper column 30 with respect to the core member 41, that is, the horizontal position with respect to the lower column 10, is adjusted. Can be confirmed.
In addition, by pinching the core member 41 with the upper set 46 of the bolts 44 that are pinching 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. 41, that is, the inclination of the upper pillar 30 with respect to the lower pillar 10 can be adjusted.

In particular, in this embodiment, the horizontal position of the upper column 30 with respect to the core member 41 can be set for each height by setting a plurality of sandwiching members (the upper set 46 and the lower set 47). That is, the lower set 47 adjusts the horizontal position of the upper post 30 with respect to the lower post 10, and the upper set 46 adjusts and confirms the inclination of the upper post 30 with respect to the lower post 10. ..
Therefore, according to the present embodiment, the core member 41 and the bolt 44 as the sandwiching member can secure the accuracy of the connection position and the accuracy of the inclination while eliminating the portion protruding to the outside of the column.

In this embodiment, since the core member 41 has a cylindrical shape, the core member 41 can be clamped by the bolts 44 regardless of the angular positions of the upper column 30 and the lower column 10 around the central axis.
For example, if both the upper column 30 and the core member 41 are in the shape of a rectangular tube, the tip of the bolt 44 may obliquely abut the side surface of the core member 41 depending on the angular position, and it may not be possible to perform proper clamping. However, there is a possibility that extra work is required for the angular alignment between the upper column 30 and the core member 41.
On the other hand, if the core member 41 has a cylindrical shape, it is sufficient to apply the bolt 44 to the portion having the largest diameter and sandwich the bolt 44, 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 pinch by the bolt 44 is strong, it is possible to prevent the core member 41 from being deformed, and it is possible to realize an appropriate horizontal position adjustment or tilt adjustment.
In particular, since a cross member is used as the reinforcing member 45 and the back side of the portion where the bolt 44 is abutted 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 pillar 30, and the lower end 32 of the upper pillar 30 is brought close to the upper end of the lower pillar 10 (the upper surface of the diaphragm 14), a stopper serving as an upper locking member. The member 43 and the backing member 42 that also serves as the lower locking member are engaged with each other, and their mutual movements are restricted. Therefore, 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 the present embodiment, since the backing member 42 is installed on the upper end of the lower pillar 10 (the upper surface of the diaphragm 14) to cover the inner edge of the lower end opening of the upper pillar 30, the backing of the groove for welding is performed. Can be secured.

It should be noted that the present invention is not limited to the above-described embodiment, and modifications and the like within a range in which the object of the present invention can be achieved are included in the present invention.
In the above-described embodiment, the core member 41 is a cylindrical steel pipe, but it may be, for example, a bottomed cylindrical pipe, or may be filled with a filler inside to be solid, and the outer peripheral surface is a cylindrical surface. Any cylindrical core member may be used.

In the above-described embodiment, the bolts 44, which are the sandwiching members, are installed at a plurality of heights of the upper set 46 and the lower set 47, but these may have 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. For adjusting the inclination, another construction wire or the like can be used.
When only the upper set 46 is installed, the horizontal position is restricted by reducing the distance between the lower end 32 and the backing member 42, which can be used for adjusting only the inclination of the upper column 30.

  In the above-described embodiment, the cross-shaped reinforcing member 45 is installed inside the core member 41. However, as the reinforcing member, a beam member, a lattice member, a diaphragm, or the like can be used, and the reinforcing member 45 can be sandwiched by being stretched inside the core member. A thick member or rib that disperses the force from the member can be used. Further, the reinforcing member is not limited to a member that directly reinforces the back side of the portion where the bolt 44 is abutted, and even a distant portion can be used as long as deformation of the portion can be prevented.

In the above-described embodiment, 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 pillar 30 is temporarily fixed to the lower pillar 10 by engaging them. However, it is not essential that both of them be installed and engaged with each other. Further, it is not essential that the backing member 42 also serves as the lower locking member, and the lower locking member and the backing member 42 may be installed separately.
For example, a plate-shaped lower locking member may be installed on the surface of the diaphragm 14 so as to receive the lower end of the upper column 30, or 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, as long as a predetermined gap can be secured between the lower end 32 of the upper pillar 30 and the upper end of the lower pillar 10 (the upper surface of the diaphragm 14).

  In the above-described embodiment, the backing member 42 secures the groove backing for welding the lower end 32 of the upper pillar 30 to the upper end of the lower pillar 10 (the upper surface of the diaphragm 14). Such a backing member 42 is not limited to the strip-shaped member fixed to the upper surface of the diaphragm 14 as in the above-described embodiment, but a strip-shaped member is fixed inside the lower end opening of the upper column 30. Good.

  In addition, the lower pillar 10 is not limited to the pillar-beam joint portion 12 and the steel pipe pillar 11, and may have an appropriate structure such as, for example, an H-shaped steel with a diaphragm 14 stretched at the upper end. The configuration of the steel beam 20, etc., may be appropriately selected for implementation.

  INDUSTRIAL APPLICATION This invention can be utilized for a pillar connection structure and a pillar connection method.

  DESCRIPTION OF SYMBOLS 1 ... Column beam structure, 10 ... Lower side column, 11 ... Steel pipe column, 12 ... Column beam joint part, 13 ... Intermediate column, 14,15 ... Diaphragm, 16 ... Bracket, 20 ... Steel beam 21,22 ... Flange , 23 ... Web, 30 ... Upper side column, 31 ... Steel tube column, 32 ... Lower end, 40 ... Adjusting mechanism, 41 ... Core member, 42 ... Backing member also serving as lower side locking member, 43 ... Upper side locking member. Stopper members, 44 ... Bolts that are clamping members, 45 ... Reinforcing members, 46 ... Upper set, 47 ... Lower set.

The pillar connection structure of the present invention is a lower pillar, a tubular upper pillar whose lower end is connected to the upper end of the lower pillar, and fixed to the upper end of the lower pillar so that it can be inserted from the lower end opening of the upper pillar. A cylindrical columnar member, and a plurality of pinching members that are installed at a predetermined height position of the upper column and that each advance to the inside of the upper column so that the tip can abut the surface of the core member. Is characterized by.

The pillar connection structure of the present invention is a lower pillar, a tubular upper pillar whose lower end is connected to the upper end of the lower pillar, and fixed to the upper end of the lower pillar so that it can be inserted from the lower end opening of the upper pillar. A cylindrical columnar member, a plurality of pinching members that are installed at predetermined height positions of the upper column and that each advance to the inside of the upper column, and whose tip can contact the surface of the core member, and the core member. And a reinforcing member that is installed on the side opposite to the sandwiching member and that reinforces the portion of the core member with which the sandwiching member abuts .

Further, in the present invention, the core member is fixed to the lower pillar, the sandwiching member is installed on the upper pillar, and the core member is inserted into the upper pillar and sandwiched by the sandwiching member at the site, thereby making Pillars 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 has a cylindrical shape, it can be held by the holding member regardless of the angular positions of the upper column and the lower column around the central axis. If the core member is, for example, a quadrangular cylinder, unless the angular positions of the core member and the sandwiching member are aligned, the tip of the sandwiching member abuts the side surface of the core member obliquely, and proper sandwiching may not be possible. 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 suffices to apply the sandwiching member to the portion having the maximum diameter of the core member to sandwich the core member, thereby improving the work efficiency.
Further, in the present invention, since the reinforcing member is provided on the opposite side of the core member from the sandwiching member and reinforces the portion of the core member with which the sandwiching member abuts, even if the sandwiching member exerts a large force. Further, it is possible to prevent the core member from being deformed, and it is possible to realize an appropriate horizontal position adjustment or tilt adjustment.
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 contacting portions with each other in order to prevent the depression of the contacting portions of the sandwiching member can be used, and the core member can be used. It is possible to use a thick member or a rib that is stretched inward to disperse the force from the sandwiching member.

The pillar connection method of the present invention includes a lower pillar, a tubular upper pillar having a lower end connected to an upper end of the lower pillar, and a fixed upper end of the lower pillar that can be inserted from a lower end opening of the upper pillar. A core member, a plurality of cylindrical nipping members that are installed at a predetermined height position of the upper column, and each of which is advanced to the inside of the upper column and has a tip abutting against the surface of the core member; A reinforcing member that is installed on the side opposite to the sandwiching member and reinforces a portion of the core member with which the sandwiching member abuts. A member is inserted into the upper pillar from the lower end opening of the upper pillar, the clamping member is advanced to abut the core member from the opposite side of the reinforcing member, and the horizontal position of the upper pillar with respect to the lower pillar and The feature is that any one of the inclinations is adjusted.
In the present invention as described above, it is possible to obtain the effects as described in the above-mentioned pillar connection structure of the present invention.

In the above-described embodiment, the cross-shaped reinforcing member 45 is installed inside the core member 41. However, as the reinforcing member, a beam member, a lattice member, a diaphragm, or the like can be used, and the reinforcing member 45 can be sandwiched by being stretched inside the core member. A thick member or rib that disperses the force from the member can be used. Further, although not included in the present invention, the reinforcing member is not limited to the one that directly reinforces the back side of the portion with which the bolt 44 is abutted, and even if it is a distant portion, it can be used as long as deformation of the portion can be prevented. it can.

Claims (6)

  A lower pillar, a tubular upper pillar whose lower end is connected to the upper end of the lower pillar, and a cylindrical core member that is fixed to the upper end of the lower pillar and that can be inserted from the lower end opening of the upper pillar, A plurality of pinching members that are installed at a predetermined height position of the upper pillar and that can each advance to the inside of the upper pillar, the pillar connection structure.   The column connection structure according to claim 1, wherein the upper column is provided with a plurality of the sandwiching members at a plurality of height positions. In the pillar connection structure according to claim 1 or 2,
A pillar connection structure, wherein a reinforcing member for reinforcing a portion sandwiched by the sandwiching member is installed on the core member. In the pillar connection structure according to any one of claims 1 to 3,
An upper locking member installed on the upper pillar and capable of locking the lower pillar when the lower pillar approaches, and the upper pillar when installed on the lower pillar and the upper pillar approaches. A column connection structure having at least one of a lower side locking member capable of locking. In the pillar connection structure according to any one of claims 1 to 4,
A pillar connection structure comprising a backing member installed on the upper pillar or the lower pillar to cover an inner edge of a lower end opening of the upper pillar. A lower pillar, a tubular upper pillar whose lower end is connected to the upper end of the lower pillar, and a cylindrical core member that is fixed to the upper end of the lower pillar and that can be inserted from the lower end opening of the upper pillar, A plurality of sandwiching members that are installed at a predetermined height position of the upper pillar and can each advance to the inside of the upper pillar,
Approaching the upper column from above the lower column, inserting the core member into the upper column from the lower end opening of the upper column,
A column connecting method comprising advancing the holding member to bring it into contact with the core member, and adjusting either a horizontal position or an inclination of the upper column with respect to the lower column.

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