JPH07173870A - Column beam joint structure and assembly method thereof - Google Patents

Abstract

PURPOSE:To provide a column beam joint structure which has excellent workability and a sufficient strength CONSTITUTION:In a joint between column materials 1 and 5 formed of a square steel pipe and a beam material 4 made of an H-steel, the vertical connection positions of the column materials 1 and 5 are caused to coincide with the upper flange height of the beam material 4 joined with the column material. The flange part of a T-shaped fitment 6 is joined astride the outer surfaces of the upper and lower column materials 5 and 1, the web part of the T-shaped fitment 6 is joined with the upper flange of the beam material 4, the lower flange of the beam material 4 is joined with the web part of other T-shaped fitment 3. The flange part of the T-shaped fitment 3 is joined with the outer surface of the column material 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure between a column member such as a square steel pipe having a closed cross section and a beam member such as an H-section steel in a building having a steel frame structure, and a method for assembling the joint structure.

[0002]

2. Description of the Related Art When a square steel pipe is used as a column material and an H-shaped steel is used as a beam material, the joint between the two, which is also called a joint, withstands a large bending moment beyond the yield of the flange portion of the beam material. It must be designed to gain. For this reason, it is necessary to use high-strength bolts as the bolts at the joints, but since the pillar material has a closed cross section, the bolt heads inside the pillar cannot be fixed or tightened, and some kind of ingenuity is required. And Moreover, the plate thickness of the square steel pipe is not sufficient,
Reinforcement may be required at the joint.

According to Japanese Examined Patent Publication No. 57-7258, FIG. 11 and FIG.
As shown in FIG. 12, the beam member fittings 54 are arranged on the respective outer surfaces of the column member 51 made of square steel pipe, and the reinforcing member 52 having a substantially fan-shaped cross section is added to the inner corner portion of the column member 51. A substantially L-shaped bolt 53 having a threaded portion is wound around the side surface of the column member 51 adjacent to the reinforcing member 52 and inserted, and both ends of the bolt 53 are inserted into the beam member fitting 54 and tightened with nuts. The beam-column joint structure is described.

According to this joint structure, the column member 51 of the square steel pipe is used.
The inner corners of the bolt are reinforced by adding the reinforcing member 52, and at the same time, both end portions of the bolt 53 appear on the outer surface of the column member 51, so that tightening of the nut is easy, but it is a special L-shaped special shape. Since it is necessary to use a bolt 53 of a shape, it is costly and this bolt is used as a reinforcing member inside the pillar material 51.
There is a problem that it is extremely difficult to wind and insert 52.

Further, according to JP-A-61-225437,
As shown in FIG. 13, an L-shaped reinforcing metal member 62 is attached to the inner corner portion of a column member 61 made of a square steel pipe, and beam member mounting metal fittings 64 are arranged on each outer surface of the column member 61. 62, a column-beam joining structure in which a nut 63 is fastened to a bolt 65 penetrating the column member 61 and the beam member mounting metal fitting 64 is described. The reinforcement hardware 62 is
As shown in the perspective view of FIG. 14, it is a plate member having an L-shaped cross section, and a nut 63 is fixed to the penetrating position of the bolt 65 by adhesion or welding.

In this joint structure, the nut 63 arranged inside the column member is fixed by some means so as not to rotate together, and the bolt 65 is tightened to perform the fastening.
62 can fix the nut 63 and at the same time reinforce the pillar member 61, but no means for inserting the reinforcing metal member 62 inside the pillar member is disclosed, and if the reinforcing metal member 62 is fixed, the nut 63 Since the position is also determined and the error cannot be absorbed, there are problems such as poor workability.

Further, according to Japanese Patent Application Laid-Open No. 63-241238, a back plate is provided so as to be in contact with the inner surface of the column member, and nuts are welded or screw holes are formed at positions corresponding to the bolt holes of the back plate. A joint structure that forms and tightens bolts is described.
Similar to the one described in JP-A No. 61-225437, the nut can be fixed by the back plate and at the same time the column member can be reinforced, but not only the back plate insertion means and the fixing means are not disclosed. If the back plate is fixed by some means, the bolt position cannot be adjusted, resulting in poor workability.

Further, Japanese Patent Laid-Open No. 1-295938 discloses that
As shown in FIG. 15, inside a pillar material 71 made of square steel pipe, insert a reinforcing metal member 74 in which vertical plates 72 corresponding to each surface of the pillar material 71 are connected by a diaphragm 73, and insert bolts into the vertical plate 72. The joint structure of the column and beam is described. However, in this joint structure, not only is the sloping and flatness of the surface of the vertical plate 72 in the state of being connected by the diaphragm 73 strictly required, but it is not easy to insert the reinforcing metal fitting 74 into the column. Board 72
Since the interplanar distance must be made slightly smaller than the inner dimension of the column, there is a problem that the vertical plate 72 is pulled toward the column member 71 by tightening the bolt and the joint portion with the diaphragm is broken.

[0009]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and to realize a column-beam joint structure having excellent workability and sufficient strength, and an assembling method thereof. To do.

[0010]

According to a first pillar-beam joint structure of the present invention, a vertical connecting position of a pillar material at a joint portion of a pillar material made of square steel pipe and a beam material of H-section steel. With the flange height of one of the beam members to be joined to the column member, and the flange portions of the T-shaped metal member are joined by high-strength bolts over the outer surfaces of the upper and lower column members, and the web portion of the T-shaped metal member is fixed. The one flange of the beam member is joined with a high-strength bolt, the other flange of the beam member is joined to the web portion of another T-shaped metal article with a high-strength bolt, and the flange portion of the T-shaped metal article is a pillar. It is a column-beam joint structure that is joined to the outer surface of the material with high-strength bolts.

According to the second pillar-beam joint structure of the present invention, in the joint portion of the pillar material made of square steel pipe and the beam material of H-section steel, the connection position of the pillar material in the vertical direction is joined to the pillar material. The middle height of the flange of the beam material to be formed, and the upper and lower flanges of the beam material are joined to the web portion of the T-shaped metal article by high-strength bolts, and the flange portion of the T-shaped metal article is raised to the outer surface of the column material. It is a pillar-beam joint structure that is joined by force bolts.

The first method for assembling a column-beam joint of the present invention is a steel frame structure in which a column member made of square steel pipe and a beam member made of H-shaped steel are joined together, and The connection position is matched with the flange height of one of the beam members joined to the column member, and the flange portion of the T-shaped metal object is attached to the outer surface of the column member at a position lowered from the upper end of the column member by the beam formation of the beam member to be connected. The lower side pillar material unit which is joined by high strength bolts is built in, then the beam material is placed on the web portion of the T-shaped metal article, and then the web portion of the T-shaped metal article is positioned at the lower end of the column material. Then, the upper pillar material unit in which the T-shaped hardware is joined to the outer surface of the pillar material is built on the lower pillar material unit.

Further, the second method of assembling the column-beam joint portion of the present invention is a steel frame structure in which a column member made of square steel pipe and a beam member of H-shaped steel are joined, and The connection position is set to the intermediate height of the flange of the beam member joined to the column member, and the flange of the T-shaped metal object is attached to the outer surface of the column member at a position lowered from the upper end of the column member by half the beam formation of the beam member to be connected. A lower pillar material unit is constructed by joining the parts with high-strength bolts, and then the beam material is placed on the web portion of the T-shaped metal article, and subsequently, only half of the beam material of the beam material to be connected is pillared. It is characterized in that an upper pillar material unit is constructed by joining a flange portion of the T-shaped metal object to the outer surface of the pillar material at a position raised from the lower end of the material by a high-strength bolt.

[0014]

[Operation] The high-strength bolt used in the present invention is JIS
B1186 (high-strength hexagon bolts / hex nuts for friction welding) has an ordinary shape, and special bolts are not used, so it is easy to obtain materials. The pillar-beam joint of the present invention is
Since it is almost aligned with the vertical connection position of the pillars, the efficiency of the building work is good and the position adjustment is easy. Further, since the diaphragm is firmly attached to the inside of the column member at the manufacturing stage in the steel frame processing factory, sufficient strength can be surely imparted to the column-beam joint.

[0015]

【Example】

First Embodiment A first embodiment of the present invention will be described with reference to FIGS. 1 to 4 are front views of members constituting the beam-column joint portion of the present embodiment or assembled members thereof, and FIG.
FIG. 5 is a sectional view taken along the line AA of FIG.

FIG. 1 shows a lower column member unit, 1 is a lower column member made of square steel pipe, 2 is a diaphragm attached inside thereof, 3 is a T-shaped metal object for attaching a beam member,
This is the so-called “split T”. Since the diaphragm transmits the horizontal force acting from the flange of the beam to the column, it is necessary to attach the diaphragm to the position where the flange of the beam is extended. Since the upper end of 1 is the upper surface of the beam member, the mounting height of the diaphragm 2 and the T-shaped metal member 3 is a position lower than the upper end of the lower column member 1 by the amount of the beam member. In the steel frame processing factory, first, the flange portion of the T-shaped metal 3 is securely fastened to the outer surface of the pillar 1 by the high-strength bolt so that the web portion of the T-shaped metal 3 has this mounting height, and then the diaphragm 2 is welded. Install by. Since the mounting position is close to the end of the pillar, these mounting operations are not particularly difficult.

At the construction site, the lower pillar material unit is first built. Then, as shown in FIG.
The beam member 4 is connected to the lower column member unit. High-strength bolt that connects the web portion of the T-shaped metal 3 and the lower flange of the beam 4
10 is temporarily tightened at this stage. Finally, the upper pillar member unit is built in. FIG. 3 shows this upper pillar member unit, 5 is an upper pillar member made of square steel pipe, 6 is a T-shaped metal object for attaching a beam member, and 7 is T-shaped metal fitting for diaphragm attachment, which is attached to the inner surface of the pillar,
9 is a diaphragm. Each T-shaped hardware, ie 6, 7
Is attached to the lower end of the upper pillar 5 by a high-strength bolt 12 so that the web portion is located substantially at the lower end of the upper pillar 5. The high-strength bolt 12 is also temporarily tightened at this stage.

The diaphragms 8 and 9 may be mounted by welding like the lower diaphragm 2, but in this embodiment, a T-shaped metal piece is used and the structure is to be mounted by high strength bolts. As shown in FIG. 5, the web portion of the T-shaped metal article for attaching the diaphragm extends inward from each side of the square steel tube, and has a substantially triangular planar shape so as not to directly interfere with each other. Two square diaphragms 8 and 9 are attached by bolts so as to sandwich the web portion from above and below.

The upper pillar material unit is also shown in FIG.
It is assembled in the state of and brought to the construction site. Figure 4
Shows a state in which the upper pillar material unit of FIG. 3 has been installed in the state shown in FIG. 2 at the construction site. The high-strength bolts 11 and 13 are inserted, and the temporary assembly is completed. Next, after adjusting the fall of the pillar, the street of the center line, the horizontal of the beam, etc., the high-strength bolt 12, which is temporarily tightened,
13. Then, similarly tighten the high-strength bolts 10 and 11 to complete the building of this part.

As is clear from the above description, in the present embodiment, the connecting positions of the pillar members are substantially aligned with the mounting positions of the beam members, and the T-shaped metal members 6 and 7 are spread over the upper and lower pillar members. It is attached, and at the same time as connecting the pillar and beam, it also plays the role of a connecting metal for the upper and lower pillars. By the way, for the high-strength bolts 12 and 13, it is necessary to perform the final tightening with only the heads of the bolts exposed to the outer surface.
For example, the nut is placed inside, a U-shaped rotation washer, a washer with a tongue, etc. are inserted into the nut to hold down the co-rotation, and the bolt is turned from the outside to tighten. Fixing the nut on the inner surface by adhesion or welding is not preferable because it restricts the position adjustment of the T-shaped metal object.

It should be noted that, by reversing the vertical relationship with this embodiment,
That is, a similar joint structure can be realized even if the vertical connection position of the column is substantially aligned with the lower flange of the beam member. Also,
In the above description, the lower pillar material and the upper pillar material are different for convenience, but in reality, these are one continuous pillar material, and when the upper pillar material is built up, it is one step higher. Needless to say, the lower pillars of the building are being built.

Second Embodiment A second embodiment of the present invention will be described with reference to FIGS. 6 to 10. 6 to 9 are front views of members constituting the beam-column joint portion of the present embodiment or those assembled with each other, and FIG.
FIG. 10 is a sectional view taken along the line BB of FIG. 9. FIG. 6 shows a lower pillar material unit, 21 is a lower pillar material made of square steel pipe, 24 is a T-shaped metal member attached to the inside thereof, 25 is a T-shaped metal member also attached to the outer surface of the pillar member, Reference numerals 22 and 23 denote two rectangular diaphragms attached by bolt connection so that the web portion of the T-shaped metal piece 24 is sandwiched from above and below. The plan shape of the T-shaped metal member and the diaphragm attached to the inside of the column member is shown in FIG. 10, but is the same as that in the first embodiment.

In the present embodiment, since the vertical connection of the column members is set to the middle height of the flange of the beam member, the height of the web portion of the T-shaped metal pieces 24, 25 is from the upper end of the column member 21. It is a position that is lowered by half of the beam material. These T-shaped metal pieces 24, 25 and diaphragm 2 at a steel frame processing factory
Tighten 2 and 23 sufficiently and bring them to the construction site. At the construction site, first, the lower pillar material unit shown in FIG. 6 is built.

Subsequently, as shown in FIG. 7, a beam member 26 is connected to the lower column member unit shown in FIG. High strength bolt 34
Is temporarily tightened at this stage. At this stage, the splicing hardware 32, 33 connecting the upper and lower pillars and beams is attached. However, the high-strength bolts 36 and 37 remain temporarily tightened. FIG. 8 shows an upper column member unit, 27 is an upper column member made of square steel pipe, 28 is a T-shaped metal member attached to the inside thereof, 29 is a T-shaped metal member also attached to the outer surface of the column member,
Numerals 30 and 31 are two rectangular diaphragms attached by bolt connection so as to sandwich the web portion of the T-shaped metal article 28 from above and below. As described above, in the present embodiment, since the vertical connection of the column members is at the middle of the height of the beam member, T
The heights of the web portions of the shaped pieces 28, 29 are located at a position higher than the lower end of the column member 27 by half the beam length of the beam member. These T-shaped metal pieces 28, 29 and diaphragms in a steel frame processing factory
Tighten 30 and 31 sufficiently and bring them to the construction site.

The diaphragms 22, 23, 30, 31 are shown in FIG.
Make a square cut hole 30a in the center as shown in
The tips of the web portions of the shaped metal pieces 24, 29 extend to the inside of the cut hole 30a. Therefore, this cut hole
By driving a wedge into 30a, the T
The shaped pieces 24, 29 can be pushed outward and brought into close contact with the column members 21, 27 to assist in bolt tightening.

At the construction site, the lower pillar material unit shown in FIG. 7 and the upper pillar material unit shown in FIG. This state is shown in FIG. The high-strength bolts 35 were also temporarily tightened, and in this state, after adjusting the tilt of the column, the center line, the horizontal of the beam, etc., each high-strength bolt 34, 35, 36, 37 that was left temporarily tightened , 38 are fully tightened to complete the construction of this part.

As is apparent from the above description, also in this embodiment, the connecting positions of the pillar members are substantially the same as the mounting positions of the beam members, and the ends of the pillar members have the same shape at the upper end and the lower end. Therefore, the steel frame can be efficiently processed. The detent of the high-strength bolt is the same as in the first embodiment.

[0028]

EFFECTS OF THE INVENTION According to the present invention, a column-beam joint structure having excellent workability and sufficient strength and an assembling method thereof are realized, and an efficient steel frame structure is realized. Play.

[Brief description of drawings]

FIG. 1 is a front view showing a part of a first embodiment of the present invention.

FIG. 2 is also a front view showing a part of the first embodiment of the present invention.

FIG. 3 is also a front view showing a part of the first embodiment of the present invention.

FIG. 4 is a front view showing the first embodiment of the present invention.

5 is a cross-sectional view taken along the line AA of FIG.

FIG. 6 is a front view showing a part of the second embodiment of the present invention.

FIG. 7 is a front view showing a part of the second embodiment of the present invention.

FIG. 8 is a front view showing a part of the second embodiment of the present invention.

FIG. 9 is a front view showing a second embodiment of the present invention.

10 is a cross-sectional view taken along the line BB of FIG. 9.

FIG. 11 is a plan view showing a conventional technique.

FIG. 12 is a plan view showing a part of FIG. 11.

FIG. 13 is a partial cross-sectional view showing another conventional technique.

FIG. 14 is a perspective view showing this conventional technique.

FIG. 15 is a perspective view showing still another conventional technique.

[Explanation of symbols]

 1 Lower column material 2 Diaphragm 3 T-shaped metal article 4 Beam material 5 Upper column material 6, 7 T-shaped metal article 8, 9 Diaphragm 10, 11, 12, 13 High-strength bolt 21 Lower column material 22, 23, 30, 31 Diaphragm 24, 25, 28, 29 T-shaped metal object 26 Beam material 27 Upper column material 32, 33 Engraving hardware 36, 37, 38 High-strength bolt 51 Column material 52 Reinforcing member 53 Bolt 54 Mounting bracket 61 Column material 62 Reinforcing metal object 63 Nut 64 Beam mounting bracket 65 Bolt 71 Column 72 Vertical plate 73 Diaphragm 74 Reinforcing hardware

Claims (6)

[Claims] 1. A joint between a column made of square steel and a beam made of H-shaped steel, in which the vertical connection position of the column is matched with one flange height of the beam joined to the column. At the same time, the flange portion of the T-shaped metal article is joined to the outer surfaces of the upper and lower column members by high-strength bolts, and the web portion of the T-shaped metal article is joined to one flange of the beam material by high-strength bolts. A column-beam joint structure in which the other flange of the material is joined to the web portion of another T-shaped metal article with high-strength bolts, and the flange portion of this T-shaped metal article is joined to the outer surface of the column material with high-strength bolts. 2. The column-beam joint structure according to claim 1, wherein a diaphragm is attached inside the column member at a position where each flange of the beam member is extended. 3. In a joint portion between a column member made of square steel pipe and a beam member of H-section steel, a connection position in the vertical direction of the column member is set to an intermediate height of a flange of the beam member joined to the column member. ,
A column-beam joint structure in which the upper and lower flanges of the beam member are joined to the web portion of the T-shaped metal article with high-strength bolts, and the flange portion of the T-shaped metal article is joined to the outer surface of the column material with high-strength bolts. . 4. The column-beam joint structure according to claim 3, wherein a diaphragm is attached inside the column member at a position where each flange of the beam member is extended. 5. A method of assembling a steel frame structure, which comprises joining a column member made of square steel pipe and a beam member made of H-shaped steel, wherein the beam is joined to the column member at the connection position in the vertical direction. The lower side, which is made to match the flange height of one of the members, and is joined with the flange of the T-shaped metal object by a high-strength bolt on the outer surface of the pillar material at a position lower than the upper end of the pillar material by the beam formation of the beam material to be connected. The pillar material unit is built in, then the beam material is placed on the web portion of the T-shaped metal article, and then the web portion of the T-shaped metal article is positioned at the lower end of the column material to join the T-shaped metal article to the outer surface of the column material. A method of assembling a pillar-beam joint, comprising: installing the upper pillar material unit on the lower pillar material unit. 6. A method of assembling a steel frame structure, which comprises joining a column member made of a square steel tube and a beam member made of H-shaped steel, wherein the beam is joined to the column member at the vertical connection position of the column member. The intermediate height of the flange of the timber, and the lower part formed by joining the flange portion of the T-shaped metal object with the high-strength bolt to the outer surface of the pillar material at a position that is lowered from the upper end of the pillar material by half the beam length of the beam material to be connected. The side pillar unit is built, and then the beam is placed on the web part of the reinforcing metal, and then on the outer surface of the pillar at a position raised from the lower end of the pillar by half the beam of the beam to be connected. A method of assembling a pillar-beam joint, comprising constructing an upper pillar material unit in which a flange portion of a T-shaped metal object is joined with a high-strength bolt.