JPH10219823A - Joining member for structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure joining member which dispenses with the filling of concrete, and always makes stress to a joining member about uniform regardless of the dimension and form of an upper column and its joint position, and is simple and easy in forming. SOLUTION: A structure joining member is composed of a cylindrical body 2 where a cover 4 is formed at least one end, and the cover 4 and a reinforcing sash bar 5 to support a peripheral wall are unitedly formed in the inside, thereby the joining member is hollow in its inside and light and moreover suitable for a highrise building and a large span building. In addition, since the joining member is composed by mutually abutting the cylindrical body 2 provided with the cover 4 at one end and a cylindrical body 1 having at least one opened end at their opened ends and uniting them, pattern drawing after the forming of the cylindrical body is easy, and the structure joining member excellent in accuracy and strength can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to a joining member of a structure applied to join steel pipe concrete columns, reinforced concrete columns, steel beams, and the like.

[0002]

2. Description of the Related Art A steel frame structure formed by assembling steel materials such as a shape rope, a steel plate, and a steel pipe is used for a high-rise building and a large span building because of its light weight, durability, earthquake resistance, and the like. In particular, the columns are composed of circular steel pipes, square steel pipes, etc.
Steel structures composed of shape steel such as shape and H shape are often used, but the joint between the column and the beam is designed for vertical load such as load of the beam itself, floor load, loading load, earthquake, wind Receiving bending moment, axial force and shearing force due to horizontal load.
Therefore, a joining member that enables joining to cope with this has been developed.

FIG. 12 shows, for example, Japanese Patent Application Laid-Open No. 4-289348.
FIG. 1 is a cross-sectional view showing a conventional joining member disclosed in Japanese Patent Application Laid-Open Publication No. H11-157, in which a slit 23 is provided in a portion of a peripheral wall of a cylindrical body 21 to which a flange of a steel beam 22 is attached. Further, a reinforcing plate 24 for supporting two sides of the corner portion of the cylindrical body peripheral wall portion of the square cylinder 21 in the square cylinder 21 is formed by welding.

[0004] FIG. 13 shows, for example, Japanese Patent Application Laid-Open No. 8-135.
FIG. 17 is a cross-sectional view showing another conventional joining member disclosed in Japanese Patent Application Publication No. 017-017, which has a cylindrical body 31 as a basic structure, and a reinforcing portion 32 integrally formed in the cylindrical body includes: Since the through openings 33 are provided, when concrete is filled in the connected columns, the fluidity of the concrete in the joint member is good, and the concrete is uniformly filled between the connected columns. Reference numeral 34 denotes a steel beam attached to the peripheral wall of the cylindrical body 31.

[0005]

The conventional joining member is constructed as described above.
In Japanese Patent No. 8 (FIG. 12), a reinforcing plate 24 is welded as a reinforcing portion in each cylinder, but the work of welding this reinforcing plate 24 to the inner peripheral wall of the cylinder requires time and labor.
In addition, the joining members of columns and beams used in a high-rise building or a high-seismic building need to accurately arrange the reinforcing portion in the cylindrical body 21 in order to further increase the strength of the structure. In order to weld to the inner peripheral wall of the cylinder, since the inside of the cylinder 21 is narrow, there is a problem that the work is difficult and welding defects are likely to occur.

Recently, a concrete-filled steel pipe structure in which concrete is filled inside a steel pipe column to increase the bending moment and the shearing force of the column has been used as a column used for a high-rise building or a high-rise building. However, in this case, the diaphragm in the steel pipe prevents the concrete from being filled, and voids are generated in the steel pipe. In particular, in the case of a stepped beam, there is also a problem that the concrete filling property is poor because a large number of diaphragms are welded in the steel pipe.

[0007] Further, the welding of the joining member to the column and the beam has problems that it is difficult to secure the positioning accuracy and it is troublesome in the case of columns and beams having different shapes and sizes. there were.

[0008] In the case of Japanese Unexamined Patent Publication No. Hei 8-135017 (Fig. 13), the space of the joining member is filled with concrete, so that the weight increases. Since the reinforcing portion 32 is integrally formed in the cylindrical body 31, high-precision casting is difficult, die-cutting after molding is difficult, molding of a special shape is difficult, and ready-madeness and versatility are poor. At the upper end of the joining member joined to the upper end of the lower pillar,
When an upper pillar having a diameter different from that of the joining member is joined, there has been a problem that stress on the joining member is not uniform.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and does not require the filling of concrete, regardless of the size, shape and joining position of the upper pillar, and the stress on the joining member is reduced. An object of the present invention is to obtain a joint member of a structure which is simple and easy to mold, and which is always substantially uniform.

[0010]

According to a first aspect of the present invention, there is provided a joining member for a structure, comprising: a tubular body having a lid formed at at least one end and integrally formed with the lid and a reinforcing bar for supporting a peripheral wall portion. It consists of

According to a second aspect of the present invention, there is provided a joining member for a structure, comprising: a tubular body integrally formed with a cover formed at least at one end and a reinforcing bar for supporting the cover and the peripheral wall inside; A cylindrical body integrally formed with a reinforcing bar for supporting the peripheral wall portion is made to abut on its open ends, and the abutting portions are welded and integrated.

According to a third aspect of the present invention, there is provided a joint member for a structure, wherein an outwardly inclined groove slope is formed along a circumferential direction at a contact portion of a cylindrical body.

According to a fourth aspect of the present invention, there is provided a joining member for a structure, wherein a welding reinforcing member is disposed on an inner surface of a contact portion of a cylindrical body.

According to a fifth aspect of the present invention, there is provided a joining member for a structure, wherein the reinforcing bars are formed in a lattice shape.

According to a sixth aspect of the present invention, there is provided a joining member for a structure, wherein a large number of reinforcing bars are formed short in the axial direction on the lid forming end side, and a small number of reinforcing bars are formed in the axial direction on the other end side. Things.

According to a seventh aspect of the present invention, the reinforcing bar of the connecting member of the structure is tapered.

According to an eighth aspect of the present invention, there is provided a joining member for a structure, wherein one end is formed in a square cross section and the other end is formed in a cylindrical cross section.

According to a ninth aspect of the present invention, there is provided a joining member for a structure, wherein an open end thickness is increased inward to form a reinforcing thick portion.

According to a tenth aspect of the present invention, there is provided a joining member for a structure, comprising: a pair of cylindrical bodies each having a lid formed at least at one end and integrally forming the lid and a reinforcing bar for supporting the peripheral wall portion. They are brought into contact, and the contact portions are welded and integrated.

[0020]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing a structure joining member according to an embodiment of the present invention.

Embodiment 1 FIG. 1 is a longitudinal sectional view showing a constituent material of a joining member according to the present invention, in which a lower cylinder 1 joined to an upper end of a lower column and an upper cylinder 2 joined to an upper column at an upper end. Is a basic construct. The lower cylindrical body 1 and the upper cylindrical body 2 are each formed of cast steel in a cross-section cylinder or a cross-section square cylinder such as a triangular cylinder, a square cylinder, a hexagonal cylinder, and an octagonal cylinder.

The lower tube 1 is integrally formed with a reinforcing bar 3 for supporting the peripheral wall surface of the tube. The form of this reinforcing bar 3 is such that the vertical reinforcing bar 3a and the horizontal reinforcing bar 3
b are formed in a cross shape. The vertical reinforcing bar 3a and the horizontal reinforcing bar 3b are formed from the lower end of the lower cylindrical body 1 to the vicinity of the upper end in the cylinder axis direction, and are tapered toward the upper end. In addition, the thickness of the lower open end is increased inward to form the thickened reinforcing portion 3c. Instead of the reinforcing thick part 3c, a lid 3d may be provided at the open end at the lower end as shown by a two-dot chain line.

On the other hand, a lid 4 is integrally formed at one end of the upper cylindrical body 2 and a reinforcing bar 5 for supporting the lid 4 and the peripheral wall surface of the cylindrical body is integrally formed. As shown in FIG. 2, which is a cross-sectional plan view taken along the line AA in FIG. 1, a plurality of vertical reinforcing bars 5a and horizontal reinforcing bars 5b (in the illustrated example, (Two each in the vertical and horizontal directions). The vertical reinforcing bar 5a and the horizontal reinforcing bar 5b are formed from the upper end side of the upper cylindrical body 2 to the vicinity of the middle of the cylindrical body in the axial direction, and are tapered toward the lower end side.

FIG. 3 shows that, as shown in FIG. 1, a lower cylinder 1 and an upper cylinder 2 which are separately and independently formed of cast steel,
The open end faces are brought into contact with each other, and the contact portions 6 are integrated by a welded portion 7 over the entire circumference of the cylindrical body to constitute a joint member 8 of the present invention.

In this case, in order to increase the welding strength of the contact portion 6, as shown in FIG.
The end face of the contact portion is, for example, 30. The V-shaped groove 9 is formed at the abutting portion 6 when the lower cylindrical body 1 and the upper cylindrical body 2 abut on each other. According to this configuration, the welding reinforcing member 18 is disposed on the inner surface of the contact portion 6 and the welding 7 is performed, so that the welding portion 7 is sufficiently welded without causing welding leakage, and the lower cylindrical body 1 and the upper portion are welded. The mechanical strength of the cylinder 2 is improved, and integration as the joining member 8 is often performed.

FIG. 5 shows a state in which the lower column 10 and the upper column 11 are joined by using the joining member 8 obtained as described above. First, the lower cylindrical body of the joining member 8 is attached to the upper surface of the lower column 10. 1 is brought into contact, and the contact portion 12 is fixed by welding 7. Then, the upper column 11 is brought into contact with the lid surface 4 of the upper cylindrical body 2 of the joining member 8, and the contact portion 13 is fixed by welding.

Also, the steel beam 14 is provided on each outer peripheral surface of the joining member 8.
To join. The steel beam 14 has an H-shaped cross section and includes upper and lower flange portions 14a, 14a and a web portion 14b.
The outer peripheral surface of the joining member 8 is butted and welded. In this case, the vertical reinforcing bar 5a of the upper tubular body 2 is connected between the upper and lower flange portions 14a, 14a of the steel beam 14 by the vertical reinforcing bar 3 of the lower tubular body 1.
a and the vertical reinforcing bar 5a of the upper tubular body 2 correspond to support the force from the web portion 14b and distribute the force to the entire joining member.

Outer open semi-grooves 14 ', 15 to 17 are formed on the outer peripheral surface at the upper end of the lower column 10, the outer peripheral surface at the lower end of the upper column 11, and the outer peripheral surface of the steel beam 14, and if necessary, weld reinforcement inside. By arranging and welding the member 18, welding leakage can be prevented and welding strength can be increased. Reference numeral 19 in the drawing denotes scallops formed on the web portion 14b of the steel beam 14 for welding.

As described above, according to the first embodiment, the joining member 8 is hollow and lightweight inside when joining columns and steel beams. In addition, by joining the lower cylinder 1 and the upper cylinder 2 which are separately formed to form the joining member 8, the lower cylinder 1 and the upper cylinder 2 during molding are obtained.
The lower cylinder 1 and the upper cylinder 2 having complicated internal shapes can be obtained with high precision.

As a result, the peripheral wall reinforcing bar formed inside the lower cylindrical body 1 and the upper cylindrical body 2 can be integrally formed, so that bolting and welding between the peripheral wall surface and the reinforcing bar become unnecessary, and workability is improved. In addition, stress concentration at the joints due to bolt joining or welding is eliminated, and the steel structure is stabilized.

Second Embodiment FIG. 6 shows a configuration diagram according to the second embodiment. In the second embodiment, steel beams 14 having different heights are welded to the left and right peripheral surfaces of the joining member 8. In this case, the upper and lower cylindrical members 1,
The welding reinforcing member 18 is disposed on the inner surface of the contact portion 2, the inner surfaces of the upper and lower pillars 11 and 10, and the inner surface of the contact portion of the steel beam 14.
The welding reinforcement member 18 prevents the leakage of welding, and the integration by the welded portion 7 is performed firmly, so that the same effect as in the first embodiment can be obtained.

Embodiment 3 FIG. 7 shows various mounting states when the upper column 11 having the same cross-sectional shape as the joining member 8 and having a small diameter is attached to the lid 4 of the joining member 8. (A) is a joining member 8
(B) is a view in which it is joined to the center of one side of the lid 4, and (c) is a figure in which it is joined to the center of the lid 4. FIG.
(D) is a diagram in a case where the upper pillar 13 having a circular cross section and a small diameter is joined to the lid 4 of the joining member 8 having a rectangular cross section.

As described above, regardless of the position of the upper pillar 11 at any position of the lid 4, the vertical reinforcing bars 5a and the horizontal reinforcing bars 5b are integrally formed on the inner wall surface of the connecting member 8 in a lattice shape. Therefore, the vertical load of the upper column 11 can always be stably supported reliably.

Embodiment 4 FIG. 8 is a perspective view showing another constituent material of the joining member 8, and the lower cylinder 1 has the same shape as that shown in FIG.
The upper cylindrical body 2 has the same shape as the upper cylindrical body on the side that contacts the lower cylindrical body 1, but has an intermediate portion deformed, and a lid forming end side that contacts the upper column 11 is formed in a cylindrical cross section. Therefore, by joining the lower cylinder 1 and the upper cylinder 2, a joining member 8 suitable for joining the lower pillar 10 having a rectangular cross section and the upper pillar 11 having a circular cross section can be formed. Also in this case, the reinforcing bars 3a, 3b and 5a, 5b are integrally formed in the lower cylindrical body 1 and the upper cylindrical body 2 as shown in FIGS. The pillar 10, the upper pillar 11, and the steel beam 14 can be reliably supported.

Embodiment 5 FIG. 9 shows another embodiment of the reinforcing bar 5, in which a vertical reinforcing bar 5a and a horizontal reinforcing bar 5b formed in a cross shape so as to support opposed wall surfaces, and a cylindrical peripheral wall are provided. Adjacent side reinforcing bars 5c are formed to support the two sides sandwiching the corner in the cylinder, and these reinforcing bars 5a, 5b, 5c are connected to the upper end of the upper cylindrical body 2 as shown in FIG. From the center to the middle of the cylindrical body in the axial direction, and is tapered toward the lower end thereof.

Embodiment 6 FIG. 10 shows another embodiment of the above-described reinforcing bar, in which a vertical reinforcing bar 5a and a horizontal reinforcing bar 5b formed in a cross shape so as to support opposed wall surfaces, and a cylindrical body peripheral wall angle are shown. Adjacent reinforcing bar 5c supporting two sides sandwiching the portion in a cylinder, and adjacent reinforcing bar 5c
And a radial reinforcing bar 5d for supporting the space 5e between the center columns of the cylindrical body. Each of the reinforcing bars 5a to 5d is provided with a tube extending from the upper end side of the upper cylindrical body 2 in the axial direction of the cylinder as shown in FIG. It is formed up to near the middle of the body, and is tapered toward its lower end. In addition, in order to reduce the weight, the cylindrical center column 5e is used.
It is possible to form a hole in the center in the axial direction.

Embodiment 7 FIG. 11 shows a pair of cylindrical bodies 1 and 1 in which a lid 4 is formed at one end and a lid 4 and a reinforcing bar 5 for supporting a peripheral wall are integrally formed therein.
2 shows a joint member of a structure in which two open ends are brought into contact with each other and the contact part 6 is welded to be integrated. With this configuration, manufacturing and management are easy because only a cylinder having the same structure is required.

[0038]

Since the present invention is embodied in the form described above, it has the following effects.

According to the first aspect of the present invention, since the joining member is constituted by the cylindrical body in which the lid is formed at least at one end and the lid and the reinforcing bar for supporting the peripheral wall are integrally formed therein, the pillars and the steel frame are formed. At the time of beam joining, the inside of the joining member is hollow and lightweight, and has an effect that it is extremely effective when applied to a high-rise building or a large span building.

According to the second aspect of the present invention, a cylindrical body in which a lid is formed at least at one end and a reinforcing bar for supporting the lid and the peripheral wall portion is integrally formed inside, and a peripheral wall portion is opened at least at one end and is internally formed. A cylindrical body integrally molded with the supporting pier is
Since the open ends are brought into contact with each other, and the contact portions are welded and integrated, the die after the molding of the tubular body is easy, and the joining member can be obtained with high accuracy. .

According to the third aspect of the present invention, the contact portion of the cylindrical body is formed with an outwardly inclined groove slope along the circumferential direction, so that welding between the cylindrical bodies can be reliably performed with accuracy. There is an effect that can be performed well.

According to the fourth aspect of the present invention, since the welding reinforcing member is provided on the inner surface of the cylindrical body in contact with the cylindrical body, welding leakage can be prevented and the mechanical strength of the welded portion can be increased. There is.

According to the fifth aspect of the present invention, since the reinforcing bars are formed in a lattice shape, the stress of the upper pillar is applied to the joining member no matter where the upper pillar is joined to the lid of the joining member. On the other hand, there is an effect that it becomes uniform and the upper pillar can be stably supported.

According to the sixth aspect of the invention, a large number of reinforcing bars short in the axial direction are formed on the lid forming side of the cylindrical body, and a small number of reinforcing bars long in the axial direction are formed on the other end side. So
There is an effect that a cylindrical body suitable for the shape of the column to be joined can be formed.

According to the seventh aspect of the present invention, since the reinforcing bar is tapered, there is an effect that the die can be easily removed after the cylindrical body is formed.

According to the eighth aspect of the invention, since the joining member is formed by forming one end side into a square cross section and the other end into a cylindrical cross section, the joining member is suitable for the shape of the column to be joined. There is an effect that a member can be formed.

According to the ninth aspect of the present invention, the thickness of the open end of the cylindrical body is increased toward the inside of the cylindrical body to form the reinforcing thick part, so that the cylindrical body and the lower column are formed in a solid state. This has the effect of increasing the mechanical strength of the welded portion and stably supporting the load applied to the cylinder in the vertical direction.

According to the tenth aspect of the present invention, since the cylindrical body is formed by joining the upper and lower lids and joining the upper and lower lids, the same structure can be used, so that the production and management are easy. effective.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a constituent material of a joining member of the present invention.

FIG. 2 is a plan view of an upper tubular body showing a form of a reinforcing bar.

FIG. 3 is a longitudinal sectional view of the joining member according to the embodiment of the present invention.

FIG. 4 is an enlarged vertical sectional view of a welded portion of the joining member.

FIG. 5 is a longitudinal sectional view of a state in which the lower column, the upper column, and the right and left steel beams are joined using this joining member.

FIG. 6 is a longitudinal sectional view showing a state in which a lower pillar, an upper pillar, and right and left steel beams having different diameters are connected by using this joining member.

FIG. 7 is a plan view in which an upper column is joined to the joining member by changing the joining position.

FIG. 8 is an external perspective view showing another constituent material of the joining member of the present invention.

FIG. 9 is a plan view of an upper tubular body showing another form of a reinforcing bar.

FIG. 10 is a plan view of an upper cylindrical body showing still another form of the reinforcing bar.

FIG. 11 is a longitudinal sectional view showing another constituent material of the joining member according to the present invention.

FIG. 12 is a cross-sectional view showing a conventional joining member.

FIG. 13 is a cross-sectional view showing another conventional joining member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lower cylinder 2 Upper cylinder 3,5 Reinforcement bar 4 Lid 6,12,13 Contact part 8 Joining member 10 Lower pillar 11 Upper pillar 14 Steel beam 18 Welding reinforcement member

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Akira Higashiura, 47-3 Mita, Atsugi-shi, Kanagawa Sato Industrial Co., Ltd. Central Research Laboratory (72) Inventor Norihide Yoyama 324-8 Nakano-Nitta, Shizuoka-shi, Shizuoka Yoyama Industrial Co., Ltd.

Claims (10)

[Claims] 1. A joining member for a structure, comprising: a cylindrical body having a lid formed at least at one end and integrally forming the lid and a reinforcing bar for supporting a peripheral wall portion therein. 2. A cylindrical body having at least one end formed with a lid and integrally forming the lid and a reinforcing bar for supporting the peripheral wall portion, and a reinforcing bar having at least one open end and internally supporting the peripheral wall portion. A joint member for a structure, wherein an open end of the cylindrical body is brought into contact with each other, and the contact portion is welded and integrated. 3. The joint member for a structure according to claim 2, wherein an outwardly inclined groove slope is formed along a circumferential direction at a contact portion of the cylindrical body. 4. The structural member according to claim 2, wherein a welding reinforcing member is disposed on an inner surface of the contact portion of the cylindrical body. 5. The structural member according to claim 1, wherein the reinforcing bars are formed in a lattice shape. 6. The cylindrical body according to claim 1, wherein a plurality of reinforcing bars short in the axial direction are formed on the lid forming end side, and a small number of reinforcing bars are formed on the other end side in the axial direction. Item 2
A joining member for the structure described in the above. 7. The joint member for a structure according to claim 1, wherein the reinforcing bar is tapered. 8. The method according to claim 1, wherein one end is formed in a square cross section and the other end is formed in a cylindrical cross section.
A joining member for the structure described in the above. 9. The thickness of the open end is increased inward,
The structure joining member according to claim 1 or 2, wherein a reinforcing thick portion is formed. 10. Open ends of a pair of cylindrical bodies having at least one end formed with a lid and integrally forming the lid and a reinforcing bar supporting the peripheral wall portion are brought into contact with each other, and the contact parts are welded. A joint member for a structure, which is integrated.