JP3252961B2 - Fixed parts and bolt parts used for steel pipe column connection - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing part and a bolt part used for joining a steel pipe column, and more particularly, to joining a steel pipe pillar to a steel beam, butt joining steel pipe pillars, and joining a steel pipe pillar to a column base member. The present invention relates to a fixed part and a bolt part used for joining, joining a steel pipe column and a reinforcing bar.

[0002]

2. Description of the Related Art Conventionally, as a method of joining a steel beam such as an H-shaped steel beam to a steel tube column, a horizontal diaphragm is interposed at a beam joint of the steel tube column, and a steel beam is welded to the horizontal diaphragm. It is a target. However, this method has problems that many cutting / welding steps are required, which is troublesome, and that it depends on the skill of the operator and that it is difficult to ensure accuracy.

To date, as a column joining method that does not require welding work, there has been proposed a method in which a reinforcing part is provided inside a beam joint of a steel pipe column and a steel beam is bolted using the reinforcing part. (See Japanese Patent Application Laid-Open Nos. 5-263468, 11-24226, and 2898586). However, these methods involve inserting a reinforcing part into a steel pipe column, and it takes time and effort to securely fix the reinforcing part to a beam joint, and it is still difficult to ensure accuracy. In addition, when connecting a beam to this reinforcing part with bolts, use expensive one-side bolts on steel pipe columns with specially thickened beam joints in places that cannot be reached inside the steel pipe columns. Inevitably, when an ordinary high-strength bolt is used, an opening must be provided for inserting a hand into the steel pipe column at the expense of the strength of the steel pipe column.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned difficulties in the conventional joining of steel pipe columns, and is labor-saving without causing a reduction in strength of the steel pipe columns. An object of the present invention is to provide a fixed part and a bolt part used for steel pipe column joining that can accurately perform a joint operation of steel pipe columns.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned technical problems, the present invention provides a steel pipe column 1 having a through-hole 10 at a site where a joining counterpart member such as a steel beam B is to be joined; At a position inserted into the steel pipe column 1 and facing the through hole 10,
A fixing part 3 for fixing a reinforcing part 2 having a fastening hole 20 having a female screw 21 on an inner surface, wherein a bolt 4
And a male screw 33 corresponding to the female screw 21 of the fastening hole 20 in the reinforcing component 2 on the outer periphery.
Are formed, and form a cylindrical body provided with a fitting projection 35 at the distal end portion which fits into the through hole 10, and is screwed into the fastening hole 20 of the reinforcing component 2 so as to be able to advance and retreat in the axial direction. A flange 31 is formed on the rear end side of the tubular body so as to be able to contact the inner surface of the reinforcing component 2, and a distal end side of the tubular body is capable of coming into contact with the inner surface of the steel pipe column 1. A contact portion 32 is formed, and a nut 34 is provided on the inside of the distal end portion. The reinforcing component 2 is connected to the steel pipe column with the fixed component 3 inserted into the fastening hole 20 of the reinforcing component 2 retracted. 1, the through-hole 10 of the steel pipe column 1 is aligned with the fastening hole 20 of the reinforcing part 2, and then the fixed part 3 is rotated to be screwed into the female screw 21 of the fastening hole 20 for insertion. The male screw 33 of the fixed part 3 is further advanced, and the fitting protrusion 35 on the distal end side is fitted into the through hole 10 of the steel pipe column 1 to reinforce the flange 31 of the fixed part 3. The reinforcing part 2 is fixed to the joint part in the steel pipe column 1 by making the contact part 32 contact the inner surface of the steel pipe column 1 and the contact part 32, and then the bolt 4 is fixed to the fixing part. A technical means of screwing the steel pipe column 1 into the screw hole 30 of the third from the outside of the steel pipe column 1 to join the steel pipe column 1 and the joining counterpart member was adopted.

In order to solve the above-mentioned problems, the present invention provides a torcia-type bolt component 5 which can be screwed into the screw hole 30 of the fixing component 3 described above, wherein the bolt shaft has a hooking portion at the tip. In addition to having a break pin tail 50 formed with 51, the diameter of the non-threaded portion is formed smaller than the thread root diameter of the threaded portion of the shaft portion, and this bolt component 5 is previously inserted into the screw hole 30 of the fixed component 3. The reinforcing part 2 is screwed into the fastening hole 20 of the reinforcing part 2 in the axial direction so that the fixing part 3 is inserted and retracted, and then the reinforcing part 2 is inserted into the steel pipe column 1. After inserting and aligning the through hole 10 of the steel pipe column 1 with the fastening hole 20 of the reinforcing component 2, the fixing component 3 is rotated to bring the flange 31 of the fixing component 3 into contact with the inner surface of the reinforcing component 2. With fixed parts 3
The reinforcing part 2 is fixed to the joint portion in the steel pipe column 1 by abutting the contact part 32 at the tip of the steel pipe column 1 to the inner surface of the steel pipe column 1. By rotating, the screw part of the bolt part 5 is projected to the outside of the steel pipe column 1, and the nut 52 is screwed into the screw part of the bolt part 5 from the outside of the steel pipe column 1 until the break pin tail 50 is broken. The technical means of fastening and joining the steel pipe column 1 and the joining counterpart member was adopted.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on first to fifth embodiments shown in the accompanying drawings.
FIG. 1 is a partial longitudinal sectional view of a joint structure of a steel pipe column to which the fixing component of the first embodiment according to the present invention is applied, FIG. 2 is a partial transverse sectional view of the joint structure, and FIGS. FIG. 7 and FIG. 8 are partial cross-sectional views of a modified example of the joint structure according to an embodiment of the present invention. FIG. 9 is a partial longitudinal sectional view of a joint structure of a steel pipe column to which a fixing part and a bolt part according to a second embodiment of the present invention are applied, FIG. 10 is a partial transverse sectional view of the joint structure, and FIGS. FIG. 2 is a partially enlarged longitudinal sectional view showing an assembling process of the joint structure. FIG. 17 is a partially exploded longitudinal sectional view of a joint structure of a steel pipe column to which the fixing component of the third embodiment according to the present invention is applied, and FIG. 18 is a steel pipe column to which the fixing component of the fourth embodiment according to the present invention is applied. FIG. 19 is a partially exploded longitudinal sectional view of a joint structure of a steel pipe column to which the fixing component of the fifth embodiment according to the present invention is applied.

[First Embodiment] In this embodiment, as shown in FIGS. 1 to 6, a steel pipe column 1 and a steel beam B made of H-section steel, which is a joining counterpart, are connected to a high-strength bolt 4
Are joined together.

In the drawing, the one designated by the reference numeral 1 is a steel pipe column made of a rectangular steel pipe, and a plurality of through holes 10, 10... ing.

In the figure, reference numeral 2 denotes a reinforcing part which can be inserted into the steel pipe column 1 and reinforces a beam joint portion of the steel pipe column 1 and faces a through hole 10 of the steel pipe column 1. A fixing hole 20 is formed at a position where the fixing hole 20 is formed. That is, as shown in FIG. 2, the reinforcing component 2 of the present embodiment has a cross H-shaped cross-sectional shape in which two H-shaped steels cross each other at a web portion, and the steel pipe column 1 When inserted inside, each flange of the reinforcing component 2 faces the inner wall of the steel pipe column 1. A plurality of fastening holes 20 corresponding to the through holes 10 are formed in these flanges.
・ 20… are established. As shown in FIG. 3, a female screw 21 having a left-hand thread is formed in each fastening hole 20 of the reinforcing component 2.

In the figure, what is indicated by reference numeral 3 is a fixed part according to the present invention, which is inserted into each of the fastening holes 20 of the reinforcing part 2 so as to be able to advance and retreat, and connects the reinforcing part 2 and the steel pipe column 1. Fix it. The fixed part 3 of the present embodiment has a right-hand screw hole
30 and a flange 31 is formed on the rear end side of the reinforcing member 2 so as to be in contact with the inner surface of the reinforcing component 2.
A contact portion 32 capable of contacting the inner surface of the steel pipe column 1 is formed on the distal end side.

As shown in FIG. 3, on the outer periphery of the fixed part 3 of the present embodiment, a left-handed male screw 33 capable of being screwed into the female screw 21 of the fastening hole 20 is engraved. With the abutment
A fitting projection 35 that can be fitted into the through hole 10 of the steel pipe column 1 is provided at a tip of the fitting 32, and a nut 34 is recessed at the tip of the fitting projection 35. If the fixing part 3 is rotated by inserting the hexagon wrench W into the nut part 34, a fixing hole is formed.
The fixing member 3 inserted into the unit 20 can be moved forward and backward in the axial direction. In the drawing, the one designated by reference numeral 36 is a spacer interposed between the flange 31 and the reinforcing component 2 as necessary.

In the figure, what is designated by reference numeral 4 is a right-handed high-strength bolt which can be screwed into the screw hole 30 of the fixed component 3 from outside the fixed component 3. Washer.

In the joint structure of steel pipe columns to which the fixing component of this embodiment is applied, first, as shown in FIG. 3, the fixing component 3 previously inserted into the fixing hole 20 is retracted. In this state, the reinforcing part 2 is inserted into the steel pipe column 1, and the fastening hole 20 of the reinforcing part 2 and the through hole 10 of the steel pipe column 1 are aligned. W is inserted into the nut part 34 of the fixed part 3, the fixed part 3 is rotated, and the fixed part 3 is advanced toward the steel pipe column 1. And FIG.
As shown in the figure, the flange 31 of the fixed part 3 is brought into contact with the inner surface of the reinforcing part 2 via the spacer 36, and the fitting projection 35 is fitted into the through hole 10 of the steel pipe column 1 to make the contact part 32 Is brought into contact with the inner surface of the steel pipe column 1 so that the reinforcing component 2 is fixed to the beam joint portion in the steel pipe column 1.

Then, as shown in FIG. 5, the bolt holes b of the end plate at the end of the steel beam B are aligned with the through holes 10, 10... By screwing the bolt 4 into the screw hole 30 of the fixed part 3 and fastening it, the steel pipe column 1 and the steel beam B are securely bolted (see FIG. 6).

As described above, in the joint structure of the steel pipe column to which the fixing component of the present embodiment is applied, when the reinforcing component 2 is inserted into the steel pipe column 1, the fixing component 3 inserted into the fastening hole 20. Can be retracted, making it very easy to
Can be inserted into the steel tube column 1 and positioned at a predetermined beam joining site. It is not necessary to perform a labor-intensive operation such as press-fitting a reinforcing component into a steel pipe column as in the related art.

Moreover, in this embodiment, the steel pipe column 1
The fixed component 3 inserted into the fastening hole 20 can be easily advanced by only a rotation operation performed from the outside of the fixing component 3, and the flange 31 and the contact portion 32 of the fixed component 3 are pressed and the fitting projection 35 is fitted. Since the reinforcing component 2 can be accurately and reliably fixed in the steel pipe column 1 by using the joint, there is no need to perform welding work to fix the reinforcing component as in the related art. It is not necessary to provide an opening in the steel pipe column at the expense of strength for bolting.

Further, in this embodiment, since the projection amount of the fitting projection 35 is smaller than the thickness of the steel pipe post 1, when the fitting projection 35 is fitted into the through hole 10 of the steel pipe post 1, As shown in FIG. 5, the distal end surface of the fitting projection 35 is depressed from the outer surface of the steel pipe column, and as shown in FIG. 6, when the steel beam B is bolted, as shown in FIG. And sufficient frictional resistance can be obtained, and reliable joining can be achieved.

Further, the steel pipe column joining structure of the present embodiment can be applied to a case where a steel beam B is joined by using a reinforcing part 2 fixed in the steel tube column 1 and a high-strength bolt is applied from the outside of the steel tube column 1. 4
By simply screwing the steel beam into the screw hole 30 of the fixing member 3, the steel beam B can be joined very easily. There is no need to use side bolts, and there is no opening in the steel tube post to hold the bolt inside the steel tube post, which does not reduce the strength.

The first embodiment, which is a specific example of the present invention, is generally configured as described above. However, the present invention is not limited to this embodiment, and various modifications may be made within the scope of the claims. Can be changed.

For example, in the above embodiment, a reinforcing member 2 having a cross H-shaped cross section is employed to reinforce the steel pipe column 1 made of a square steel pipe. However, as shown in FIG. It is also possible to employ a component 2 ', and as shown in FIG.
It is also possible to employ. It can be inserted into a steel pipe column 1 made of a square steel pipe, a round steel pipe, or the like.
Various design changes are possible as long as the fastening hole 20 is opened at a position facing.

Further, in this embodiment, the steel beam B to which the end plate is welded in advance to the end as a metal fitting is joined to the steel pipe column 1, but the present invention is not limited to this. It is of course possible to join the steel beam B to which the T-shaped joining metal is bolt-joined to the steel tube column 1.

[Second Embodiment] In this embodiment, as shown in FIGS. 9 to 16, a steel tube column 1 and a steel beam B made of H-section steel, which is a joining counterpart, are used to form a torcia-type high-strength bolt part 5. It is characterized in that it is used and joined, and the configurations of the reinforcing component 2 and the fixing component 3 are substantially the same as those of the above-described first embodiment.

That is, in the present embodiment, a female screw 21 of a right-hand thread is engraved in the fastening hole 20 of the reinforcing component 2, and a right-hand screw that can be screwed to the female screw 21 on the outer periphery of the fixed component 3. Male screw 33
And a screw hole 30 for a right-hand thread is formed in the axis of the fixed component 3. As shown in FIG. 11, the torcia-type high-strength bolt component 5 of the present embodiment includes a break pin tail 50 having a nut-shaped engaging portion 51 formed at the tip, and the bolt component 5 is fixed in advance. The reinforcing component 2 is screwed into a screw hole 30 formed in the right screw of the component 3 from the inside of the reinforcing component 2.

In the joint structure of the steel pipe columns according to the present embodiment, as shown in FIG. 11, the fixed part 3 to which the torcia-type bolt part 5 is screwed is retracted in advance. , The reinforcing part 2 is inserted into the steel pipe column 1 and the reinforcing part 2 is inserted.
After aligning the fixing hole 20 of the steel pipe and the through hole 10 of the steel pipe column 1,
The hexagon wrench W is inserted into the nut part 34 of the fixed part 3 from the outside of the steel column 1 to rotate the fixed part 3, and the fixed part 3 is advanced toward the steel column 1. Then, as shown in FIG. 12, the flange 31 of the fixed component 3 is brought into contact with the inner surface of the reinforcing component 2 via the spacer 36, and the fitting projection 35 is fitted into the through hole 10 of the steel pipe column 1. By contacting the contact portion 32 with the inner surface of the steel pipe column 1, the reinforcing component 2 is fixed to a beam joint portion in the steel pipe column 1.

Next, as shown in FIG. 13, the steel beam B is lifted by a crane or the like to align the through hole 10 of the steel pipe column 1 with the bolt hole b of the end plate at the end of the steel beam B, and then fix it. The hexagon wrench X is inserted from the outside of the end plate of the steel beam B into the engaging portion 51 of the break pin tail 50 of the torcia-type bolt component 5 screwed into the screw hole 30 of the member 3, and the torcia-type bolt component 5 is rotated. By
As shown in FIG. 14, the torcia-type bolt component 5 is protruded outside the steel pipe column 1.

Thereafter, as shown in FIG. 15, a washer 53 and a nut 52 are screwed into the torcia-type bolt part 5, and an inner socket of the wrench Y for torcia-type high-strength bolt is inserted from outside the end plate of the steel beam B. Pin tail broken at y1
While holding and fixing 50, nut with outer socket y2
The steel pipe column 1 and the steel beam B are securely bolted to each other by turning the screw 52 and tightening it until the break pin tail 50 breaks (see FIG. 16).

As described above, in the joint structure of steel pipe columns of the present embodiment, instead of the high-strength bolt 4 in the first embodiment, the torcia-type bolt part 5 whose pin tail 50 is broken by a predetermined tightening torque is used. Since it is adopted, there is no need to adjust the torque of the electric wrench or perform torque inspection after tightening, unlike the conventional high-strength bolts, which facilitates on-site construction management and joins the steel pipe column 1 and the steel beam B. This can save labor.

Further, in the torcia-type bolt part 5 of the present embodiment, since the diameter of the non-thread part is formed smaller than the thread root diameter of the thread part of the bolt shaft part, the hexagon wrench X is used.
Is inserted, the screw hole 30 of the fixed part 3 and the screw part of the bolt part 5 are disengaged from each other, so that the bolt part 5 can idle while being fixed to the fixed part 3 and drop off from the fixed part 3. There is no danger of it.

[Third Embodiment] In this embodiment, as shown in FIG. 17, a steel tube column 1 and another steel tube column 1 ', which is a joining counterpart, are butt-joined with high-strength bolts 4, and a reinforcing component is provided. The configurations of 2 and the fixed component 3 are the same as in the above-described first embodiment.

That is, in the present embodiment, a plurality of through holes 10 are formed in the upper part of the lower steel pipe column 1, while a plurality of through holes 10 are formed in the lower part of the upper steel pipe column 1 '. .. Are installed, and the reinforcing component 2 is inserted into each of these steel pipe columns 1.1 ′ by half. In the drawing, what is indicated by the reference numeral 6 is a reinforcing plate for reinforcing the connection of the steel pipe columns 1 and 1 ′.
A plurality of bolt holes 60, 60 ... corresponding to 10 ... are provided.

Thus, in the joint structure of the steel pipe columns of the present embodiment, the reinforcing component 2 in a state where all the fixed components 3 inserted into the fastening holes 20 are retracted in advance in the factory,
After being inserted halfway into the lower steel pipe post 1 and aligning the through hole 10 of the lower steel pipe post 1 with the fastening hole 20 of the lower half of the reinforcing component 2, a hexagon is inserted from the outside of the steel pipe post 1. Using a wrench, the fixed part 3 of the lower half fastening hole 20 is rotated and moved forward to bring the flange 31 of the fixed part 3 into contact with the inner surface of the reinforcing part 2 and to fit the fitting projection 35 of the steel pipe column 1. The reinforcing part 2 is fixed to the abutting end of the steel pipe column 1 by fitting it into the through hole 10 and making the contact part 32 abut against the inner surface of the steel pipe column 1.

Next, after the steel pipe column 1 to which the reinforcing part 2 is fixed is built at the site, the upper steel pipe column 1 ′ to be butt-joined is lifted and fitted on the upper part of the reinforcing part 2 by a crane or the like. After aligning the through hole 10 of the steel pipe column 1 ′ with the fastening hole 20 of the upper half of the reinforcing part 2, the upper half fastening hole 20 is fixed from outside the steel tube column 1 ′ using a hexagon wrench. Part 3
Is rotated to move forward, and the flange 31 of the fixed part 3 is brought into contact with the inner surface of the reinforcing part 2 and the fitting projection 35 is fitted into the through hole 10 of the steel pipe column 1 ′, thereby forming the contact part 32. By contacting the inner surface of the steel pipe column 1 ', the reinforcing component 2 is fixed to the butt end of the steel pipe column 1'.

Thereafter, as shown in FIG. 17, bolt holes 60 of the reinforcing plate 6 are inserted into the through holes 10, 10.
Are screwed into the screw holes 30 of the fixed part 3 from the outside of the reinforcing plate 6 and fastened, whereby the steel pipe columns 1.1 'are securely butt-joined. It is.

As described above, in the joint structure of the steel pipe column of the present embodiment, when the reinforcing component 2 is inserted into the steel pipe column 1.1 ′, the fixed component 3 inserted into the fixing hole 20 is retracted. Since it is possible to keep the reinforcement parts 2 very easily,
1 ′, and can be positioned at the butt joint portion. In addition, the fixed part 3 can be easily advanced only by rotating operation performed from the outside of the steel pipe column 1, 1 ′, and the flange 31 of the fixed part 3
The reinforcing component 2 can be accurately and reliably fixed in the steel tube column 1.1 'by utilizing the pressure contact of the contact portion 32 and the fitting of the fitting projection 35. There is no need to perform any welding work to secure it, nor is it necessary to provide openings in the steel pipe columns at the expense of steel pipe strength to bolt the reinforcement parts.

Further, the steel pipe column 1 is made using the reinforcing part 2.
・ When joining the 1's by butt joining, the high strength bolts 4 are screwed into the screw holes 30 of the fixed part 3 from the outside of the steel tube pillars 1 ・ 1 ′, and joining can be done very easily. There is no need to use expensive one-side bolts for steel pipe columns with specially thickened beam joints, and an opening is formed in the steel pipe column to hold the bolt inside the steel pipe column Thus, the strength does not decrease.

The third embodiment, which is a specific example of the present invention, is generally configured as described above. However, the present invention is not limited to this embodiment, and various modifications may be made within the scope of the claims. For example, in the above-described embodiment, the high-strength bolt 4 is screwed into the screw hole 30 of the fixed component 3 from the outside of the reinforcing plate 6 and butt-joined. As a matter of course, it is of course possible to employ a torsion-type bolt part 5 instead of the high-strength bolt 4 and to butt-join.

[Fourth Embodiment] In this embodiment, as shown in FIG. 18, a column base member C, which is a mating joint member, is joined to a lower end portion of a steel pipe column 1 using a high-strength bolt 4. The configuration of the fixed component 3 is the same as that of the first embodiment.

That is, in the present embodiment, a plurality of through holes 10 are formed at the lower end of the steel pipe column 1, while the upper part of the reinforcing component 2 can be inserted into the lower end of the steel pipe column 1. At the same time, a fastening hole 20 is opened at a position facing the through hole 10 of the steel pipe column 1, and a lower portion thereof is fixed to the column base member C.
In the present embodiment, the reinforcing component 2 and the column base member C are integrally formed. In the figure, what is indicated by reference numeral 7 is a reinforcing plate for reinforcing the joint between the steel pipe column 1 and the column base member C. The reinforcing plate 7 has through holes 10.
A plurality of bolt holes 70, 70 ... corresponding to the 10 ... are provided.

Thus, in the joint structure of steel pipe columns according to the present embodiment, the fixed component 3 inserted in the fastening hole 20 is joined to the reinforcing component 2 in a state in which the fixing component 3 is retracted in the factory in advance. After the steel pipe column 1 to be fitted is fitted and the fixing hole 20 of the reinforcing part 2 and the through hole 10 of the steel column 1 are aligned, the fixing hole 20 is fixed from the outside of the steel column 1 using a hexagon wrench. The component 3 is rotated and moved forward to bring the flange 31 of the fixed component 3 into contact with the inner surface of the reinforcing component 2 and to fit the fitting projection 35 into the through-hole 10 of the steel pipe column 1.
The reinforcing part 2 is fixed to the lower end portion of the steel pipe column 1 by fitting the inside thereof so that the contact portion 32 comes into contact with the inner surface of the steel pipe column 1.

After that, as shown in FIG. 18, the bolt holes 70 of the reinforcing plate 7 are aligned with the through holes 10, 10.
The high-strength bolts 4 are screwed into the screw holes 30 of the fixing member 3 from the outside of the reinforcing plate 7 and fastened, so that the column base member C is securely joined to the lower end of the steel pipe column 1.
Then, the column base member C is fixed to the foundation with the anchor A at the site.

As described above, also in the joint structure of steel pipe columns of the present embodiment, when the reinforcing component 2 is inserted into the steel pipe columns 1,
Since the fixed component 3 inserted into the fixing hole 20 can be retracted, the reinforcing component 2 can be inserted into the steel pipe column 1 very easily, and the rotating operation performed from outside the steel pipe column 1 By simply moving the fixed component 3 forward, the reinforcing component 2 is accurately and reliably inserted into the steel pipe column 1 by utilizing the pressure contact between the flange portion 31 and the contact portion 32 of the fixed component 3 and the fitting of the fitting projection 35. It is not necessary to perform welding work to fix the reinforcing parts as in the past, and an opening is provided in the steel pipe column at the expense of steel pipe strength to bolt the reinforcing parts. There is no need.

Also, when the column base member C and the steel pipe column 1 are joined using the reinforcing component 2, the high-strength bolt 4 is screwed into the screw hole 30 of the fixed component 3 from outside the steel pipe column 1. It is very easy to join the steel pipes, so it is not necessary to use expensive one-side bolts for steel pipe pillars with specially thickened beam joints as before. An opening for holding the bolt on the inside is opened in the steel pipe column, so that the strength does not decrease.

The fourth embodiment, which is a specific example of the present invention, is generally configured as described above. However, the present invention is not limited to this embodiment, and various modifications may be made within the description of the appended claims. For example, in the above-described embodiment, the high-strength bolt 4 is screwed into the screw hole 30 of the fixed component 3 from the outside of the reinforcing plate 7 and butt-joined. As a matter of course, it is of course possible to employ a torsion-type bolt part 5 instead of the high-strength bolt 4 and to butt-join.

[Fifth Embodiment] The joint structure of the steel pipe column of the present embodiment is as shown in FIG.
A steel pipe column 1 is joined to a reinforcing member R of a reinforced concrete beam as a joining counterpart, and a reinforcing component 2 and a fixed component 3
Is similar to that of the above-described first embodiment.

That is, in the present embodiment, a male screw S is formed in the reinforcing bar R which is the main bar to be joined, and this male screw S is screwed into the female screw 30 of the fixed part 3 so as to be fixed at a predetermined position of the steel pipe column 1. Is directly joined to the reinforcing bar R. In addition, what is shown by the code | symbol T in the figure is the band reinforcement wound around the said reinforcing steel bar R after the reinforcing steel R which is the main reinforcement is joined to the steel pipe column 1, and what is shown with the code | symbol U is inside the steel pipe column 1. The concrete indicated by reference numeral N is a fixing nut, and the one indicated by reference numeral J is a reinforcing bar connecting coupler.

According to the joint structure of the steel pipe column of the present embodiment, the reinforcing part 2 in a state where the fixed part 3 inserted into the fixing hole 20 is retracted is inserted into the steel pipe column 1. After aligning the fixing hole 20 of the reinforcing component 2 with the through hole 10 of the steel pipe column 1, use a hexagon wrench from the outside of the steel pipe column 1 to fix the fixing hole 20.
The fixed part 3 is rotated and moved forward, and the flange 31 of the fixed part 3 is brought into contact with the inner surface of the reinforcing part 2 and the fitting projection is formed.
The reinforcement part 2 is fixed to the reinforcing steel joint in the steel pipe column 1 by fitting the contact portion 32 into the inner surface of the steel tube column 1 by fitting 35 into the through hole 10 of the steel tube column 1.

Thereafter, as shown in FIG. 19, the male screw S of the reinforcing bar R is screwed into the screw hole 30 of the fixed part 3 to
The steel pipe column 1 and the reinforcing bar R are joined.

As described above, also in the joint structure of the steel pipe columns of the present embodiment, when the reinforcing component 2 is inserted into the steel pipe columns 1,
Since the fixed component 3 inserted into the fixing hole 20 can be retracted, the reinforcing component 2 can be inserted into the steel pipe column 1 very easily, and the rotating operation performed from outside the steel pipe column 1 By simply moving the fixed component 3 forward, the reinforcing component 2 is accurately and reliably inserted into the steel pipe column 1 by utilizing the pressure contact between the flange portion 31 and the contact portion 32 of the fixed component 3 and the fitting of the fitting projection 35. It is not necessary to perform welding work to fix the reinforcing parts as in the past, and an opening is provided in the steel pipe column at the expense of steel pipe strength to bolt the reinforcing parts. There is no need.

Also, when the reinforcing bar R is joined by using the reinforcing component 2, the external thread S of the reinforcing bar R is
Only by screwing into the screw hole 30 of the fixing part 3, the joining can be performed very easily. By the way, in this case, the reinforcing bar R may be in the form of a reinforcing bar as shown in the upper end bar of FIG. , Male thread S of rebar R
Only by screwing into the screw hole 30 of the fixed component 3, the joining can be performed very easily.

[0051]

As described above in the embodiment, in the joint structure of the steel pipe column to which the fixing component according to the present invention is applied, the fixing component inserted into the fixing hole of the reinforcing component is retracted. It is very easy to insert the reinforcing parts into the steel pipe column, and simply by moving the fixed part forward from the outside of the steel pipe column, the reinforcing parts can be accurately and securely inserted into the steel pipe column. As in the past, there is no need to perform welding work to fix the reinforcing parts, and the opening is formed in the steel pipe column at the expense of steel pipe strength to bolt the reinforcing parts. There is no need to provide.

Further, according to the present invention, since the steel pipe column and the reinforcing component can be directly fixed by the fixing component, it is not necessary to add a fixing bolt or attach a temporary fixing bolt from outside the steel pipe column. It is not necessary to cut the steel pipe columns for each floor so that a horizontal diaphragm is interposed at the beam joint as in the above, so the processing of the steel pipe columns is minimized, and the reduction in product accuracy due to cutting and welding can be prevented. At the same time, a significant cost reduction can be achieved.

Further, according to the present invention, by using a reinforcing component, a fixing component, and a bolt component, for example, joining of steel pipe columns to steel beams, butt joining of steel pipe columns, and joining of steel pipe columns to column base members. It can be applied to almost all joint structures of steel pipe columns, such as the joint between steel pipe columns and steel bars, so the applicable range is extremely wide, and there is no need to use large machine tools or special machines as in the past. It is easy to implement in small and medium-sized factories, and has very high industrial utility value.

[Brief description of the drawings]

FIG. 1 is a partial longitudinal sectional view of a joint structure of a steel pipe column to which a fixing component according to a first embodiment of the present invention is applied.

FIG. 2 is a partial cross-sectional view of the joint structure.

FIG. 3 is a partially enlarged longitudinal sectional view showing an assembling step of the joining structure.

FIG. 4 is a partially enlarged longitudinal sectional view showing an assembling process of the joining structure.

FIG. 5 is a partially enlarged longitudinal sectional view showing an assembling step of the joining structure.

FIG. 6 is a partially enlarged longitudinal sectional view showing an assembling step of the joining structure.

FIG. 7 is a partial cross-sectional view of an embodiment of the joint structure for steel pipe columns according to the first embodiment.

FIG. 8 is a partial cross-sectional view of an embodiment of the joint structure for steel pipe columns according to the first embodiment.

FIG. 9 is a partial longitudinal sectional view of a joint structure of a steel pipe column to which a fixing component and a bolt component according to a second embodiment of the present invention are applied.

FIG. 10 is a partial cross-sectional view of the joint structure.

FIG. 11 is a partially enlarged longitudinal sectional view showing an assembling step of the joining structure.

FIG. 12 is a partially enlarged longitudinal sectional view showing an assembling step of the joining structure.

FIG. 13 is a partially enlarged longitudinal sectional view showing an assembling step of the joining structure.

FIG. 14 is a partially enlarged longitudinal sectional view showing an assembling step of the joining structure.

FIG. 15 is a partially enlarged longitudinal sectional view showing an assembling step of the joining structure.

FIG. 16 is a partially enlarged longitudinal sectional view showing an assembling step of the joining structure.

FIG. 17 is a partially exploded longitudinal sectional view of a joint structure of a steel pipe column to which the fixing component according to the third embodiment of the present invention is applied.

FIG. 18 is a partially exploded longitudinal sectional view of a joint structure of a steel pipe column to which a fixing component according to a fourth embodiment of the present invention is applied.

FIG. 19 is a partially exploded longitudinal sectional view of a joint structure of a steel pipe column to which a fixing component according to a fifth embodiment of the present invention is applied.

[Explanation of symbols]

 1 ・ 1 ′ Steel pipe column 10 Through hole 2 Reinforcement part 20 Fixing hole 21 Female screw 3 Fixed part 30 Screw hole 31 Flange 32 Contact part 33 Male screw 34 Nut 35 Mating projection 4 Bolt 5 Torcia-type bolt part 50 Break Pin Tail 51 Engagement B Steel beam C Column base member R Reinforcing bar S Male screw (for reinforcing bar)

Claims (3)

(57) [Claims] 1. A steel pipe column 1 having a through-hole 10 formed at a site where a joint counterpart member such as a steel beam B is to be joined, and an inner surface inserted into the steel pipe column 1 and opposed to the through-hole 10 Female screw
A fixing part 3 for fixing a reinforcing part 2 having a fastening hole 20 having a fixing hole 21. The fixing part 3 is provided with a screw hole 30 capable of screwing a bolt 4 in an axis, and the reinforcing part is provided on an outer periphery. 2, a male screw 33 corresponding to the female screw 21 of the fastening hole 20 is engraved, and a cylindrical body provided with a fitting protrusion 35 at the tip end for fitting into the through hole 10 is formed. It is inserted and screwed into the fastening hole 20 so that it can advance and retreat in the axial direction,
A flange 31 is formed on the rear end of the tubular body so as to be able to abut against the inner surface of the reinforcing component 2. The reinforcing part 2 is inserted into the steel pipe column 1 with the fixed part 3 inserted into the fixing hole 20 of the reinforcing part 2 being retracted, and the steel pipe column 1 is formed.
After aligning the through hole 10 with the fixing hole 20 of the reinforcing component 2, the fixing component 3 is rotated to screw the female screw 21 of the fixing hole 20 into the male component of the fixing component 3. The screw 33 is further advanced, and the fitting projection 35 on the distal end side is inserted into the through hole 10 of the steel pipe column 1.
By causing the flange 31 of the fixed part 3 to abut against the inner surface of the reinforcing part 2 and the abutting part 32 to abut against the inner surface of the steel pipe column 1, The reinforcing part 2 is fixed to the joint portion, and then the bolt 4 is screwed into the screw hole 30 of the fixing part 3 from outside the steel pipe column 1, and the steel pipe column 1 is fixed.
A fixed part used for joining steel pipe columns, wherein the fixed part is joined to a joining member. 2. The fixed part used for joining steel pipe columns according to claim 1, wherein the projection amount of the fitting projections 35 is smaller than the thickness of the steel pipe columns 1. 3. A process according to claim 1 or claim 2 fixed part 3 of the screw holes 30 to threadably a torque shear-type bolt part 5 according to
In addition, the bolt shaft portion has a break pin tail 50 having a hooking portion 51 formed at the tip, and the diameter of the non-thread portion is formed smaller than the thread root diameter of the screw portion of the shaft portion, The bolt part 5 is previously inserted into the screw hole 30 of the fixed part 3 by the flange part 31.
The reinforcing component 2 is inserted into the steel pipe column 1 in a state where the fixed component 3 which is screwed in from the side and screwed into the fastening hole 20 of the reinforcing component 2 in the axial direction so as to be able to advance and retreat in the axial direction is retracted, After aligning the through-hole 10 of the steel pipe column 1 with the fastening hole 20 of the reinforcing part 2, the fixing part 3 is rotated to fix the flange 31 of the fixing part 3 to the reinforcing part 2.
Abutting portion 32 of the fixed component 3
Is brought into contact with the inner surface of the steel pipe column 1 so that the steel pipe column 1
Then, the reinforcing part 2 is fixed to the joint portion in the inside, and then the bolt part 5 is rotated by using the engaging part 51 so that the screw part of the bolt part 5 is projected outside the steel pipe column 1. A nut 52 is screwed into the threaded part of the part 5 from the outside of the steel pipe column 1 and the nut 52 is tightened until the broken pin tail 50 is broken to join the steel pipe column 1 and the joining counterpart member. Bolt parts used.