JP2002294862A - High strength bolt joining structure and joining method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a high strength bolt joining structure, and a joining method capable of relieving restriction of positioning work of upper and lower split tees and an H-shaped cross-sectional beam at a building site when joining the H-shaped cross-sectional beam to a box-shaped cross-sectional column by a high strength bolt via a pair of upper and lower split tees. SOLUTION: An upper side or lower side split tee side bolt hole of the box- shaped cross-sectional column is formed as an elongate hole by extending upward or downward by 0.5 to 1.5 times a high strength bolt shaft diameter with the final fastening position as a reference. The upper side split tee can be retreated upward from the final fastening position, or the lower side split tee can be retreated downward and either of the upper and lower split tees is put in a retreating state, and the H-shaped cross-sectional beam is positioned between the upper and lower split tees. The elongate hole extended by 0.5 to 1.5 times the high strength bolt shaft diameter is arranged on the upper side or lower side split tee side, and the upper side or lower side split tee may be retreated upward or downward.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, a method of constructing a steel structure building by using a box-shaped member having a rectangular or circular cross section as a pillar, and connecting the box-shaped pillar with a pair of upper and lower split tees. TECHNICAL FIELD The present invention relates to a high-strength bolted joint structure and a joining method applied to a bolted joint structure between a box-shaped column and an H-shaped sectional beam to which an H-shaped sectional beam (rolled material or welded assembly material) is attached.

[0002]

2. Description of the Related Art In recent years, a columnar member having a rectangular box-shaped section and H
A bidirectional rigid frame structure using a cross-sectional beam is often used, and a through-diaphragm type joint structure is generally used as the joint structure. In this type of joint structure,
The joint between the box-shaped column and the diaphragm and the attachment between the diaphragm and the H-shaped section beam are performed by welding, and the connection between the attachment section and the H-shaped section beam is performed by bolting via a side plate. In such a through-diaphragm type joint structure, the compressive force and the tensile force at the upper and lower flanges generated when a bending moment acts on the H-shaped section beam can be reduced without reducing the rigidity of the joint. However, the structure is complicated and the number of processing steps is large. In addition, it is necessary to weld both sides of the diaphragm to the box-shaped column and the column core, so that a large amount of welding is required and a high level of welding skill is required.

For this reason, recently, as shown in FIG.
Without a diaphragm, a pair of upper and lower split tees 2a, 2b are joined to the box-shaped section column 1 with a specially constructed expensive one-side bolt 5 (not shown in detail), and an H-shaped cross section is attached to the upper and lower pair of split tees 2a, 2b. By joining the beams 4 with the high-strength bolts 3, a joining structure that reduces the welding load has been adopted. In such a joint structure of a box-shaped column and a split tee, a general high-strength bolt (for example, a high-strength hexagonal bolt for friction welding specified in JIS B1186 or a structural torcia-type high-strength bolt specified by the Japan Steel Structure Association) ), It is impossible to perform joint construction by ordinary bolt joining.

For this reason, one-side bolts capable of being joined from the outside of a box-shaped section column have been developed and put into practical use. Also, before building the column, insert a general high-strength bolt from the inside of the box-shaped column in advance into the bolt hole provided in the box-shaped column with a special tool at the factory or site,
A method has also been proposed in which the split tee abuts on a box-shaped column and is fixed. However, the former joint structure using one-side bolts is expensive, which increases the cost of the joints and limits the strength. In addition, it is not easy to control the introduction tension on the bolts, and the beam-column joints of large structures A stable bolt joint structure could not be realized in the structure.

[0005] The latter method can improve the cost and strength as compared with the one-side bolt, but since the upper and lower split tees are fixed to the pillar before the beam is attached, the beam at the site can be removed. At the time of installation, there is a problem in the layout workability in positioning the H-shaped cross section beam between the upper and lower split tees, resulting in an increase in construction cost. In this case, at the time of beam installation work at the site, the nut temporarily tightening the split tee may be loosened and the vertical position of the split tee may be adjusted, but at present the difference between the bolt shaft diameter and the bolt hole diameter is 2 to 2. It is determined to be 3 mm or less, and the adjustment width of the vertical position of the split tee cannot be sufficiently adjusted, so that the workability cannot be sufficiently improved.

[0006]

SUMMARY OF THE INVENTION The present invention relates to, for example, a method for connecting an H-shaped beam to a box-shaped column with a high-strength bolt through a pair of upper and lower split tees. It is an object of the present invention to provide a high-strength bolt joining structure and a joining method capable of alleviating restrictions on the positioning operation of an H-shaped section beam.

[0007]

The present invention has the following features (1) to (4) in order to achieve the above object. (1) In a joint structure of a box-shaped column and an H-shaped beam in which an H-shaped beam is joined to a box-shaped column through a high-strength split tee through upper and lower split tees, a bolt on the upper split tee side of the box-shaped column is used. The high-strength bolted joint between the box-shaped column and the H-shaped beam, wherein the hole is an elongated hole extending upward from the final fastening position by 0.5 to 1.5 times the bolt shaft diameter. Construction. (2) In a joint structure of a box-shaped column and an H-shaped beam in which an H-shaped beam is joined to a box-shaped column through a high-strength bolt via upper and lower split tees, the lower split tee side of the box-shaped column is A high-strength bolt having a box-shaped column and an H-shaped beam, wherein the bolt hole is an elongated hole extending downward from the final fastening position by 0.5 to 1.5 times the bolt shaft diameter. Joint structure.

(3) In a joint structure of a box-shaped column and an H-shaped beam in which an H-shaped beam is joined to a box-shaped column via a high-strength bolt through upper and lower split tees, a box-shaped column having an upper split tee The height of the box-shaped column and the H-shaped beam is characterized in that the bolt hole on the side is an elongated hole extending downward from the final fastening position by 0.5 to 1.5 times the bolt shaft diameter. Force bolt joint structure. (4) In a joint structure of a box-shaped column and an H-shaped beam in which an H-shaped beam is joined to a box-shaped column by high-strength bolts via upper and lower split tees, A high-strength bolt having a box-shaped column and an H-shaped beam, wherein the bolt hole is an elongated hole extending upward from the final fastening position by 0.5 to 1.5 times the bolt shaft diameter. Joint structure.

(5) In a method of joining a H-shaped section beam to a box-shaped section column with high-strength bolts via upper and lower split tees in a high-strength bolt joining method of the box-shaped section column and the H-shaped section beam, Insert the bolt hole on the split tee side upward by 0.5 to 1.5
When the upper and lower split tees are bolted to a box-shaped section column at the factory or before building by using a double-length elongated hole and the upper split tee is bolted to the bolt shaft diameter from the final position to 0.5 to 1. When the H-shaped section beam is temporarily fastened to the upper and lower split tees by a distance of 5 times in the retracted state, and the H-shaped section beam is joined with high-strength bolts, the lower flange of the H-shaped section beam is supported by the lower split tee. A box-shaped column characterized by lowering the upper split tee to a predetermined position to complete the high-strength bolt connection to the box-shaped cross-section column, and joining the H-shaped beam to the upper and lower split tees with a high-strength bolt. High strength bolt joining method for H-section beams.

(6) In a method of joining a H-shaped section beam to a box-shaped section column with high-strength bolts via upper and lower split tees in a high-strength bolt-joining method of the box-shaped section column and the H-shaped section beam, Bolt holes on the side split tee side are elongated holes extending 0.5 to 1.5 times the bolt shaft diameter downward with reference to the final fastening position, and the upper and lower split tees are factory or before building When joining high-strength bolts to a box-shaped column, the lower split tee must be 0.5 to 1.
When the H-shaped cross-section beam is joined by high-strength bolts between the upper and lower split tees, the upper flange and upper split tee are joined by high-strength bolts. Loosen the lower split tee and raise the lower split tee to a predetermined position to complete the connection with the box-shaped section column. At the same time, connect the lower flange of the H-shaped beam to the lower split tee with high-strength bolts A high-strength bolt joining method for a box-shaped column and an H-shaped beam.

(7) In a method of joining a H-shaped section beam to a box-shaped section column with high-strength bolts through upper and lower split tees in a high-strength bolt joining method of the box-shaped section column and the H-shaped section beam, Make the bolt hole on the column side of the cross section a long hole extending 0.5 to 1.5 times the bolt shaft diameter downward with respect to the final fastening position, and install the upper and lower split tees at the factory or before building. When joining high-strength bolts to a column with a cross-section, the upper split tee must be 0.5 to 1.
Temporarily fasten in the retracted state 5 times above and when connecting the H-shaped section beam with high strength bolts between the upper and lower split tees, the upper flange with the lower flange of the H-shaped section beam supported by the lower split tee A box characterized in that the fastening of the split tee is loosened, the upper split tee is lowered to a predetermined position to complete the fastening with the box-shaped section column, and the H-shaped section beam is joined to the upper and lower split tees with high strength bolts. Column with cross section and H
High-strength bolt joining method for shaped beams.

(8) A method of joining a H-shaped section beam to a box-shaped section column with high-strength bolts via upper and lower split tees in a high-strength bolt joining method of a box-shaped section column and an H-shaped section beam; The bolt hole on the side of the column is shaped into a long hole extending 0.5 to 1.5 times the bolt shaft diameter upward with respect to the final fastening position, and the upper and lower split tees are set at the factory or before building. When joining high-strength bolts to a box-shaped column, the lower split tee must be 0.5 to 1.
Temporarily tightened in a retracted state 5 times below, and when connecting the H-shaped section beam with high-strength bolts between the upper and lower split tees, the lower side with the upper flange of the H-shaped section beam supported by the upper split tee The fastening of the split tee is loosened and the lower split tee is raised to a predetermined position to complete the fastening with the box-shaped section column, and the H-shaped beam is joined to the upper and lower split tees with high strength bolts. Box-shaped column and H
High-strength bolt joining method for shaped beams.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention is applied to a case in which an H-shaped beam is joined to a box-shaped column with high-strength bolts via a pair of upper and lower split tees or angle fittings. Basically, before building at the factory or site, high strength bolts are inserted into the bolt holes from the inside of the box-shaped column in advance, and the upper and lower split tees abutted on the box-shaped column are joined with high-strength bolts It is assumed that this is done. In the present invention, when positioning the H-shaped section beam between the upper and lower split tees fastened to the box-shaped section column with high-strength bolts, the upper split tee is retracted upward, or the lower split tee is retracted downward. By setting the state, the restriction on the positioning work of the H-shaped section beam is relaxed, and this workability is improved.

When the H-shaped beam is mounted, the lower split tee usually has a function of supporting the lower flange of the H-shaped beam from the viewpoint of facilitating the mounting operation. It is often advantageous to retreat the split tee upward. Here, the retreat distance of the split tee is preferably 0.5 to 1.5 times the shaft diameter of the high-strength bolt from the final fastening position. If it is less than 0.5 times the shaft diameter of the high-strength bolt, the retracting effect is not sufficient, and the effect of improving the positioning workability is not sufficient. Even if it exceeds 1.5 times the shaft diameter of the high-strength bolt, the improvement effect does not increase, so the upper limit is preferably set to about 1.5 times.
In addition, since the contact area of the washer decreases on the inner side of the box-shaped column due to the long hole, there is a concern that the joining strength is reduced,
This concern can be solved by increasing the strength of the washer by about one rank.

Conventionally, the diameter of the bolt hole of the box-shaped column is set to be several mm larger than the shaft diameter of the high-strength bolt, because the bolt hole can be smoothly inserted into the bolt hole. Increasing the bolt hole diameter has been considered to be unfavorable because it leads to a decrease in proof stress. However, according to the experiments conducted by the present inventors, under the current situation where the strength of the material of the box-shaped column and the bolt is increased and the joint structure is being improved (for example, adoption of a damage control structure and the like), the split tee on the upper side is in progress. It has been confirmed that the amount of reduction in proof stress caused by increasing the length of the bolt holes of the box-shaped column to be joined at the above-mentioned level is negligible.

According to the present invention, a high-strength bolt is inserted from the inside of the box-shaped column through the bolt hole before the factory or building method.
It is based on the assumption that the split tee is bolted to the box-shaped column with high strength by projecting it outward from the bolt holes of the pair of upper and lower split tees that are in contact with the box-shaped column. However, at this time, for example, a special device (a bolt conveying device and a drawing jig) as disclosed in Japanese Patent Application Laid-Open No. 2000-213070 filed by the present applicant can be used. All high-strength bolted joints between the box-shaped column and the split tee can be completed at the factory, but in order to ease restrictions on beam installation at the construction site, On the factory side, the fastening of only the split tee on the fixed side is completed, and the split tee on the retreat side is temporarily fastened. At this time, the split tee may be temporarily fastened in the retracted state, or may be temporarily fastened at the final fastening position to be in the retracted state when building.

For example, when the lower split tee is fixed and the upper split tee is on the retracted side, the fastening of the lower split tee is completed, and the upper split tee is transported to the construction site in a temporarily fastened state. . When mounting the beam at the construction site, the upper split tee is retracted upward, positioned while supporting the beam with the lower split tee, lowered to the fastening position and fastened to the box-shaped column And the beam members are joined by high-strength bolts. As the high-strength bolt used in the present invention, a torcia-type high-strength bolt having a torque control mechanism at the tip of the nut screw side is mainly used, but as a whole joint structure, a one-side bolt or a high-strength bolt is used. Hex bolts can also be used.

[0018]

(Embodiment 1) Embodiment 1 of the present invention will be described below in detail with reference to FIGS. Example 1
A pair of upper and lower split tees 2a, 2b
This is a case where the present invention is applied to a box-shaped column and a high-strength bolted joint structure of an H-shaped beam for joining the H-shaped beam 4 with high-strength bolts through the upper split tee of the box-shaped column 1. The upper split tee 2a can be retracted upward from the final fastening position when the H-shaped cross-section beam 4 is mounted between the upper and lower split tees 2a and 2b by making the bolt hole 1a on the 2a side into an elongated hole. In the high-strength bolted joint structure of the box-shaped section column and the H-shaped section beam, one to a plurality of steps of the H-shaped section beam 4 are provided on one to four sides of the box-shaped section column via a pair of upper and lower split tees 2a and 2b. Here, a case where the H-shaped section beam 4 is joined to one side surface of the box-shaped section column by high-strength bolt will be representatively described. 1 (a), (b),
(C) shows a state in which an H-shaped cross-section beam 4 is joined to one side surface of the box-shaped column 1 by a high-strength bolt 3 via a pair of upper and lower split tees 2a and 2b (completion of fastening) according to the present invention. .

In FIGS. 1A and 1B, 2a and 2b
Is a pair of upper and lower split tees, each vertical part ep
Is joined to the side surface of the box-shaped column 1 by a high-strength bolt 3, and H is provided between the horizontal portions fp of the pair of upper and lower split tees.
The top end of the H-shaped beam 4 is located at the tip of the H-shaped beam 4 and the horizontal portion fp of the upper split tee 2a.
The lower flange fb is connected to the horizontal portion fp of the lower split tee 2b by a high-strength bolt 3a, respectively. An example is shown. In this high-strength bolt joining structure, the bolt holes 1a of the box-shaped column 1 for joining the upper split tee 2a with high-strength bolts have ordinary bolt holes as shown in FIG. 1b to distance a
(0.5 to 1.5 times the shaft diameter d of the high-strength bolt 3) is an elongated hole, and when the upper split tee 2a is temporarily fastened by the high-strength bolt 3, the upper split tee 2a
Can adjust the vertical position together with the high-strength bolt 3 within the range of the distance a.

Here, the upper and lower split tees 2a, 2b are joined to the box-shaped column 1 with high-strength bolts 3 before building at the factory or at the construction site. As shown in FIG. 2, when the H-shaped cross-section beam 4 is temporarily fastened (in a state where the fastening is easily loosened) and the H-shaped section beam 4 is attached to the horizontal portion of the upper and lower split tees 2a and 2b at the construction site, Split tee 2a upwards distance a
With the lower portion of the H-shaped beam 4 supported by the horizontal portion fp of the lower split tee 2b, the upper flange fa and the lower surface of the horizontal portion fp of the upper split tee 2a are retracted. A gap of a distance a is formed at the center of the beam, so that the restriction on the alignment work of the H-shaped section beam 4 can be eased. After alignment of the H-section beam 4, lower split tee 2
The lower flange b of the H-shaped cross-section beam 4 is joined to the horizontal portion fp of the b by a high-strength bolt 3a, and the upper split tee 2a
, The lower surface of the horizontal portion fp is brought into contact with the upper flange fa of the H-shaped section beam 4, joined to the horizontal portion fp with the high-strength bolt 3 a, and fastened to the box-shaped column 1 with the high-strength bolt 3. Let it complete. Thus, FIGS. 1 (a) and 1 (b)
A high-strength bolted joint structure between the box-shaped column 1 and the H-shaped beam 4 as shown in FIG.

(Embodiment 2) Hereinafter, Embodiment 2 of the present invention will be described in detail with reference to FIGS. Example 2
In the same manner as in the first embodiment, the H-shaped beam 4 is joined to the box-shaped column 1 via a pair of upper and lower split tees 2a and 2b. In the case where the present invention is applied to the structure, the bolt hole 1a on the lower split tee 2b side of the box-shaped column 1 is made to be a long hole, and the H-shaped beam 4 is inserted between the upper and lower split tees 2a and 2b. This embodiment differs from the first embodiment in that the lower split tee 2b can be retracted downward from the final fastening position when it is mounted. 3 (a), 3 (b) and 3 (c) show that an H-shaped beam 4 is provided on one side surface of a box-shaped column 1 via a pair of upper and lower split tees 2a and 2b according to the present invention.
Indicates a joined (fastened) state.

3 (a) and 3 (b), 2a, 2b
Is a pair of upper and lower split tees, each vertical part ep
Is joined to the side surface of the box-shaped column 1 by a high-strength bolt 3, and H is provided between the horizontal portions fp of the pair of upper and lower split tees.
The top end of the H-shaped beam 4 is located at the tip of the H-shaped beam 4 and the horizontal portion fp of the upper split tee 2a.
The lower flange fb is connected to the horizontal portion fp of the lower split tee 2b by a high-strength bolt 3a, respectively. An example is shown. In this high-strength bolt joining structure, the bolt holes 1a of the box-shaped column 1 for joining the lower split tee 2b with high-strength bolts are formed by ordinary bolts as shown in FIG. Hole 1b at distance a
(0.5 to 1.5 times the shaft diameter d of the high-strength bolt 3) is an elongated hole, and when the lower split tee 2b is temporarily fastened by the high-strength bolt 3, the lower split tee 2b
Can adjust the vertical position together with the high-strength bolt 3 within the range of the distance a.

In this case, the upper and lower split tees 2a and 2b are joined to the box-shaped column 1 with the high-strength bolts 3 before building at the factory or at the construction site. 2b is temporarily fastened (in a state where the fastening is easily loosened), and when attaching the H-shaped section beam 4 to the horizontal portion of the upper and lower split tees 2a and 2b at the construction site, as shown in FIG. The lower split tee 2b is retracted downward by a distance a, and a gap of a distance a is formed between the upper surface of the horizontal portion fp of the lower split tee 2b and the lower surface of the lower flange fb of the H-shaped cross-section beam 4 to form an H-shaped cross section. Restrictions on the alignment work of the beam 4 can be eased. After the positioning of the H-section beam 4,
The upper flange fa of the cross section beam 4 is connected to the upper split tee 2a.
The lower split tee 2b is raised with the high strength bolt 3a joined to the horizontal portion fp, and the upper surface of the horizontal portion fp is
The lower cross-section beam 4 is brought into contact with the lower surface of the lower flange fb and joined with the high-strength bolt 3a, and the fastening of the box-shaped cross-section column 1 and the lower split tee 2b by the high-strength bolt 3 is completed.
In this way, a high-strength bolted structure of the box-shaped column 1 and the H-shaped beam 4 as shown in FIGS. 3A and 3B can be obtained.

(Embodiment 3) Hereinafter, Embodiment 3 of the present invention will be described in detail with reference to FIGS. Example 3
In the same manner as in the first and second embodiments, the H-section beam and the H-section beam are joined by a high-strength bolt to the H-section beam 4 via a pair of upper and lower split tees 2a and 2b. Although the present invention is applied to a bolt joint structure, a bolt hole 2o on the side of the box-shaped column 1 of the upper split tee 2a.
Is different from the first and second embodiments in that the upper split tee 2a can be retracted upward from the final fastening position when the H-shaped cross-section beam 4 is mounted between the upper and lower split tees 2a and 2b. Things. 5 (a), (b),
(C) shows a state in which the H-shaped section beam 4 is joined to one side surface of the box-shaped section column 1 by a high-strength bolt 3 via a pair of upper and lower split tees 2a and 2b according to the present invention (completion of fastening). .

In FIGS. 5A and 5B, 2a, 2b
Is a pair of upper and lower split tees, each vertical part ep
Is joined to the side surface of the box-shaped column 1 by a high-strength bolt 3, and H is provided between the horizontal portions fp of the pair of upper and lower split tees.
The top end of the H-shaped beam 4 is located at the tip of the H-shaped beam 4 and the horizontal portion fp of the upper split tee 2a.
The lower flange fb is connected to the horizontal portion fp of the lower split tee 2b by a high-strength bolt 3a, respectively. An example is shown. In this high-strength bolt joint structure, the bolt hole 2o on the side of the box-shaped column 1 of the upper split tee 2a is enlarged as shown in FIG.
Insert a normal bolt hole at the distance a (0.
In the state where the upper split tee 2a is temporarily fastened by the high-strength bolt 3, the upper split tee 2a can adjust the vertical position within the range of the distance a.

In this case, the upper and lower split tees 2a and 2b are joined to the box-shaped section column 1 with high-strength bolts 3 before building at the factory or at the construction site. When the H-shaped cross-section beam 4 is temporarily attached (in a state where it can be easily loosened) and the H-shaped section beam 4 is attached to the horizontal portion of the upper and lower split tees 2a and 2b at the construction site, as shown in FIG. The split tee 2a is retracted upward by a distance “a”, and a gap of a distance “a” is formed between the lower surface of the horizontal portion fp of the upper split tee 2a and the upper surface of the upper flange fa of the H-shaped cross-section beam 4 so that the H-shaped cross-section beam 4 Restrictions on the alignment work can be relaxed. After the positioning of the H-section beam 4,
The lower flange fb of the beam 4 is connected to the lower split tee 2b.
The upper split tee 2 is supported by the horizontal portion fp of
a, the lower surface of the horizontal portion fp is brought into contact with the upper surface of the upper flange fa of the H-shaped beam 4 and joined with the high-strength bolt 3a, and the high-strength bolt 3 of the box-shaped column 1 and the upper split tee 2a To complete the fastening. In this way,
As shown in FIGS. 5A and 5B, a high-strength bolt joint structure between the box-shaped column 1 and the H-shaped beam 4 can be obtained.

(Embodiment 4) Hereinafter, Embodiment 4 of the present invention will be described in detail with reference to FIGS. Example 4
Is as in Example 1-3, the high forces of the pair of upper and lower split tee 2a, box-shaped cross-section column of high-strength bolts joining the H-shaped cross-section beam 4 through 2b and H-section beam into a box-section column 1 In the case where the present invention is applied to a bolt joint structure, a bolt hole 2o on the box-shaped column 1 side of the lower split tee 2b.
The first embodiment is characterized in that the lower split tee 2b can be retracted downward from the final fastening position when the H-shaped cross-section beam 4 is mounted between the upper and lower split tees 2a and 2b.
-3. 7 (a), (b),
(C) shows an H-shaped beam 4 on one side surface of a box-shaped column 1 via a pair of upper and lower split tees 2a and 2b,
Indicates a joined (fastened) state.

In FIGS. 7A and 7B, 2a and 2b
Is a pair of upper and lower split tees, each vertical part ep
Is joined to the side surface of the box-shaped column 1 by a high-strength bolt 3, and H is provided between the horizontal portions fp of the pair of upper and lower split tees.
The top end of the H-shaped beam 4 is located at the tip of the H-shaped beam 4 and the horizontal portion fp of the upper split tee 2a.
The lower flange fb is connected to the horizontal portion fp of the lower split tee 2b by a high-strength bolt 3a, respectively. An example is shown. In this high-strength bolt joining structure, the bolt hole 2o of the lower split tee 2b on the side of the box-shaped column 1 is, as shown in an enlarged view in FIG.
Insert a normal bolt hole at the distance a (0.
It is a long hole that is extended (5 to 1.5 times). In a state where the lower split tee 2b is temporarily fastened by the high-strength bolt 3, the lower split tee 2b can adjust the vertical position within the range of the distance a. .

Here, the upper and lower split tees 2a and 2b are joined to the box-shaped column 1 by means of the high-strength bolts 3 before being built at the factory or at the construction site. As shown in FIG. 8, when the H-shaped cross-section beam 2b is temporarily fastened (in a state where the fastening is easily loosened) and the H-shaped section beam 4 is attached to the horizontal portion of the upper and lower split tees 2a and 2b at the construction site, The lower split tee 2b is retracted downward by a distance a, and a gap of a distance a is formed between the upper surface of the horizontal portion fp of the lower split tee 2b and the lower surface of the lower flange fb of the H-shaped cross-section beam 4 to form an H-shaped cross section. Restrictions on the alignment work of the beam 4 can be eased. After the positioning of the H-section beam 4,
The upper flange fa of the cross section beam 4 is connected to the upper split tee 2a.
The lower split tee 2b is raised with the high strength bolt 3a joined to the horizontal portion fp, and the upper surface of the horizontal portion fp is
The lower cross-section beam 4 is brought into contact with the lower surface of the lower flange fb and joined with the high-strength bolt 3a, and the fastening of the box-shaped cross-section column 1 and the lower split tee 2b by the high-strength bolt 3 is completed.
In this way, a high-strength bolted structure of the box-shaped column 1 and the H-shaped beam 4 as shown in FIGS. 7A and 7B can be obtained.

In each of the above-described embodiments, the high-strength bolt connection of the split tee to the box-shaped column can be efficiently performed at the factory or at the construction site before the construction.
In addition, when building, it is possible to ease restrictions on the work of positioning the H-shaped section beam between the upper and lower split tees. The present invention is not limited to the contents of the above embodiment. For example, regarding the number of H-shaped cross-section beams to be attached to the box-shaped cross-section column, the mounting position, the type and number of high-strength bolts, the evacuation of the retracting split tee, the temporary fastening, the timing of fastening, etc. Material strength,
Modifications may be made within the range satisfying the claims according to the design strength and the like.

[0031]

In the joint structure of the box-shaped column and the H-shaped beam according to the present invention, basically, a high-strength bolted joint of the split tee to the box-shaped column is built at a factory or a construction site. This operation can be performed efficiently, and this operation can be made more efficient. In addition, one of the upper and lower split tees is temporarily fastened so that it can be retracted when the building is to be constructed, so that the restriction on the work of positioning the H-shaped cross-section beam between the upper and lower split tees can be eased. The workability of bolt connection can be greatly improved.

[Brief description of the drawings]

FIG. 1A is a partially cutaway front explanatory view showing an example of a high-strength bolted joint structure between a box-shaped column and an H-shaped beam in Example 1 of the present invention, and FIG. (a) is a side view of the figure, and (c) is a partially enlarged view of the high-strength bolt joint between the upper split tee and the box-shaped column in FIG.

FIG. 2 is a partially cutaway front explanatory view showing an example of an attachment state of an H-shaped beam in a high-strength bolt joint structure example of a box-shaped column and an H-shaped beam in FIG. 1;

FIG. 3 (a) is a partially cutaway front explanatory view showing an example of a high-strength bolted joint structure between a box-shaped column and an H-shaped beam in Embodiment 2 of the present invention, and FIG. (a) is a side view of the figure, and (c) is a partially enlarged view of the high-strength bolt joint between the upper split tee and the box-shaped column in FIG.

FIG. 4 is a partially cutaway front explanatory view showing an example of a mounting state of an H-shaped section beam in a high-strength bolt joint structure example of a box-shaped section column and an H-shaped section beam in FIG. 3;

FIG. 5A is a partially cutaway front explanatory view showing an example of a high-strength bolted joint structure between a box-shaped column and an H-shaped beam in Example 3 of the present invention, and FIG. (a) is a side view of the figure, and (c) is a partially enlarged view of the high-strength bolt joint between the upper split tee and the box-shaped column in FIG.

FIG. 6 is a partially cutaway front explanatory view showing an example of a mounting state of the H-shaped beam in the high-strength bolted joint structure example of the box-shaped column and the H-shaped beam in FIG. 5;

FIG. 7A is a partially cutaway front view showing an example of a high-strength bolted joint structure between a box-shaped column and an H-shaped beam in Example 4 of the present invention, and FIG. (a) is a side view of the figure, and (c) is a partially enlarged view of the high-strength bolt joint between the upper split tee and the box-shaped column in FIG.

FIG. 8 is a partially cutaway front view showing an example of an attached state of an H-shaped beam in the high-strength bolted structure example of the box-shaped column and the H-shaped beam in FIG. 7;

FIG. 9 is a three-dimensional explanatory view showing an example of a conventional high-strength bolt joint structure between a box-shaped column and an H-shaped beam.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Box-shaped pillar 1a Bolt hole (long hole) 1b Bolt hole 2a Upper split tee 2b Lower split tee ep Vertical part fp Horizontal part 3, 3a High strength bolt 2o Bolt hole (long hole) 4 H-shaped beam fa Flange fb Lower flange 5 One side bolt

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2E125 AA04 AA14 AB01 AB16 AC15 AC16 AG03 AG04 AG12 BB08 BC08 BD01 BE01 BF03 CA06 CA13 CA14 DA01 EA01 EA06

Claims (8)

[Claims] 1. An upper split tee side of a box-shaped column in a joint structure of a box-shaped column and an H-shaped beam in which an H-shaped beam is joined to a box-shaped column through high-strength bolts via upper and lower split tees. Wherein the bolt holes are elongated holes extending 0.5 to 1.5 times the bolt shaft diameter upward with respect to the final fastening position. Bolt connection structure. 2. In a joint structure of a box-shaped section column and an H-shaped section beam in which an H-shaped section beam is joined to a box-shaped section column with high-strength bolts via upper and lower split tees, a lower split tee of the box-shaped section column is provided. The height of the box-shaped column and the H-shaped beam is characterized in that the bolt hole on the side is an elongated hole extending downward from the final fastening position by 0.5 to 1.5 times the bolt shaft diameter. Force bolt joint structure. 3. A joint structure of a box-shaped column and an H-shaped beam in which an H-shaped beam is joined to a box-shaped column through a high-strength bolt via upper and lower split tees. Characterized in that the bolt holes are elongated holes extending from 0.5 to 1.5 times the bolt shaft diameter downward with respect to the final fastening position. Bolt connection structure. 4. In a joint structure of a box-shaped column and an H-shaped beam in which an H-shaped beam is joined to a box-shaped column through a high-strength bolt through upper and lower split tees, a box-shaped column having a lower split tee is provided. The height of the box-shaped column and the H-shaped beam is characterized in that the bolt hole on the side is an elongated hole extending upward from the final fastening position by 0.5 to 1.5 times the bolt shaft diameter. Power bolt joint structure High strength bolt joint structure. 5. A method for joining a H-shaped section beam to a box-shaped section column by high-strength bolts via upper and lower split tees in a high-strength bolt-joining method for a box-shaped section column and an H-shaped section beam. The bolt hole on the tee side is made into an elongated hole that is extended 0.5 to 1.5 times the bolt shaft diameter upward with respect to the final bolt fastening position, and the upper and lower split tees are manufactured at the factory or before building. When joining high-strength bolts to a box-shaped column, adjust the upper split tee from the final position to 0.5 to the bolt shaft diameter.
Temporarily fasten in a retracted state 1.5 times above, and when joining an H-shaped beam to the upper and lower split tees with high strength bolts,
With the lower flange of the beam shaped section supported by the lower split tee, the upper split tee is lowered to a predetermined position to complete the high-strength bolt connection to the box-shaped column, and the upper and lower split tees are H-shaped. A high-strength bolt joining method for a box-shaped section column and an H-shaped section beam, wherein the section beam is joined with a high-strength bolt. 6. A method of joining a H-shaped section beam to a box-shaped section column with high-strength bolts via upper and lower split tees in a high-strength bolt-joining method for a box-shaped section column and an H-shaped section beam. The bolt holes on the split tee side are elongated holes extending 0.5 to 1.5 times the bolt shaft diameter downward with respect to the final fastening position, and the upper and lower split tees are boxed at the factory or before building. When joining high-strength bolts to a column with a cross section, temporarily tighten the lower split tee in a retracted position 0.5 to 1.5 times the bolt shaft diameter below the final position in a retracted state, and make an H-shaped section between the upper and lower split tees. When joining the beams with high strength bolts, after joining the upper flange and upper split tee with high strength bolts, loosen the fastening of the lower split tee and raise the lower split tee to a predetermined position. While completing the fastening with the box-shaped column, A high-strength bolt joining method for a box-shaped column and an H-shaped section beam, wherein a lower flange of the H-shaped section beam is joined to the lower split tee by a high-strength bolt. 7. A method for joining a H-shaped section beam to a box-shaped section column with high-strength bolts via upper and lower split tees in a high-strength bolt joining method for a box-shaped section column and an H-shaped section beam. The bolt holes on the pillar side are elongated holes extending 0.5 to 1.5 times the bolt shaft diameter downward with respect to the final fastening position. When joining high-strength bolts to a cross-section column, temporarily tighten the upper split tee in a retracted state 0.5 to 1.5 times the bolt shaft diameter from the final position and retract the H-shaped cross-section beam between the upper and lower split tees. When joining with high-strength bolts, loosen the fastening of the upper split tee with the lower flange of the H-shaped section beam supported by the lower split tee, lower the upper split tee to a predetermined position, and connect with the box-shaped column. Complete the fastening and A high-strength bolt joining method for a box-shaped column and an H-shaped beam, wherein the H-shaped beam is joined to the split tee with a high-strength bolt. 8. A method of joining a H-shaped section beam to a box-shaped section column with high-strength bolts through upper and lower split tees and a high-strength bolt joining method of the H-section section beam with a lower split tee. The bolt hole on the section column side is made a long hole extending 0.5 to 1.5 times the bolt shaft diameter upward with reference to the final fastening position, and the upper and lower split tees are set at the factory or before building. When joining high-strength bolts to a column with a cross section, temporarily tighten the lower split tee in a retracted position 0.5 to 1.5 times the bolt shaft diameter below the final position in a retracted state, and make an H-shaped section between the upper and lower split tees. When connecting the beam with high-strength bolts, loosen the lower split tee with the upper flange of the H-section beam supported by the upper split tee, raise the lower split tee to a predetermined position, and make a box-shaped section. Complete the fastening with the pillar and A high-strength bolt joining method for a box-shaped column and an H-shaped beam, wherein the H-shaped beam is joined to the split tee with a high-strength bolt.