JP2002348956A - High strength bolt-connection structure between steel column and steel beam, and its construction method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a high strength bolt-connection structure between a box column and an H-beam causing no problem even if a split tee is, for example, fixed to the box column in a plant using only a high strength bolt without having a special one-side fastening mechanism and to provide its connecting construction method in the high strength bolt-connection structure connecting the box column and the H-beam by high strength bolt-connection via the split tee. SOLUTION: This high strength bolt-connection structure between the box column and the H-beam and the connecting construction method for providing this connecting structure is so formed that a vertical web of the split tee is disposed parallel to the axial direction of the column, the flange part is connected to the box column by the high strength bolts, and the H beam is connected to a joint-angle horizontal plate formed by connecting the vertical plate to the vertical web of the split tee by the high strength bolts, in an outside region in the web tip of the split tee by the high strength bolts.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to steel columns such as H-shaped steel columns and rectangular steel tube columns and steel beams such as H-shaped steel beams and channel steel beams constituting a steel structure building. The present invention relates to a high-strength bolt joint structure.

[0002]

2. Description of the Related Art Conventionally, for example, as a general high-strength bolt joint structure of a box-shaped section column and an H-shaped section beam, as shown in FIG.
a, 2b vertical plates (flanges) 2f are joined by high-strength bolts 3, and the ends of the H-shaped beams 4 are positioned between the horizontal plates (web) 2p of the upper and lower split tees 2a, 2b. The upper surface of the upper flange 4a of the H-shaped section beam 4 is applied to the lower surface side of the horizontal plate 2p of the tee 2a, and the lower surface of the lower flange 4b of the H-shaped section beam 4 is applied to the upper surface side of the horizontal plate 2p of the lower split tee 2b. A high-strength bolt-joined structure of a box-shaped column and an H-shaped beam, which are in contact with each other and joined by a high-strength bolt 5 and which reduce the welding load, is known. In such a high-strength bolt joining structure, since the column material is the box-shaped column 1, when the split tees 2 a and 2 b are joined to the box-shaped column 1 with the high-strength bolt 3, a general high-strength bolt is used. Force bolt (JIS B118
It is difficult to carry out the construction by a normal construction method using a hexagonal bolt for frictional joining specified in No. 6 or a structural torque shear type high strength bolt specified by the Japan Steel Structure Association. Therefore, one-side bolts that can be constructed only from the outside of the box-shaped column are developed and put into practical use. However, one-side bolts are expensive and increase the joining cost. In addition, there is a problem that the one-side bolt cannot be applied to column-beam joining of a large structure that receives a large load due to its limited strength.

On the other hand, before a factory or building, a general high-strength bolt is inserted into the bolt hole of a vertical plate of a split tee abutting on the box-shaped column from the inside of the box-shaped column by a special device. A method has been proposed in which the vertical plate of the split tee is joined to the box-shaped column by inserting and screwing a nut on the high-strength bolt on the outside and tightening. According to this method, high-strength bolt joining without using one-side bolts is possible, so that cost and strength can be improved as compared with the method using one-side bolts. As shown in FIGS. 15A and 15B, the upper and lower split tees 2a and 2b are arranged such that the horizontal plate 2p is perpendicular to the axial direction of the box-shaped section column 1, and the split tees 2a and 2b If 2b is fixed to the box-shaped column 1 before the H-shaped beam 4 is attached, the upper and lower split tees 2a, When the distance between the horizontal plates 2p of 2b is close to the height of the H-shaped section beam 4, it takes time to set the upper and lower flanges 4a, 4b of the H-shaped section beam 4, and the workability is reduced. Problem, and as a result It has led to an increase in the door.

[0004]

Basically, the present invention has a problem even if a split tee is fixed to a steel column at a factory, for example, using only high-strength bolts having no special one-side bolt tightening mechanism. It is an object of the present invention to provide a high-strength bolted joint structure between a steel column and a steel beam via a split tee, and a jointing method capable of performing jointless work.

[0005]

The present invention has the following features (1) to (4) in order to achieve the above object. (1). In a steel column and steel beam high-strength bolted joint that connects a steel column and a steel beam with high-strength bolts via split tees, the web surface of the split tee is arranged parallel to the material axis direction of the column. , The flange part is high-strength bolted to the steel column, and the steel beam is high-strength bolted to the joint angle where the split-tee web is high-strength bolted at the outer region of the split-tee web tip High-strength bolted joints between steel columns and steel beams. (2). (1) A high-strength bolted joint between a steel column and a steel beam, wherein the steel column is a rectangular box-shaped section member or an H-shaped section member. (3). In (1), the steel column is a circular box-shaped section member, and the flange portion of the split tee is formed in a curved surface so as to substantially contact the outer peripheral surface of the circular box-shaped section member. A high strength bolted structure of a steel column and a steel beam, characterized in that a flange portion of the steel column is connected with a high strength bolt. (4). Before building steel columns at a factory or construction site, split tees are placed so that the web surface is parallel to the column material axis direction, and the flanges are bolted to the steel columns. A high strength bolt joining method for a steel column and a steel beam, wherein a steel beam is joined to a web portion of the split tee through a joint angle after the column is built.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention relates to a steel column and a steel beam having a box-shaped cross section or an H-shaped cross section, which are connected to a steel column by a high-strength bolt through a split tee. In the joint structure,
Basically, the web surface of the split tee is arranged in parallel with the axial direction of the steel column to form a vertical web portion (hereinafter referred to as "vertical web"). A "flange" is fixed to a predetermined position of a steel column in advance, and the vertical web of the split tee and the steel beam are connected to each other by a joint that transmits the shear force from the steel beam to the steel column in a favorable manner. High-strength bolted joint structure that does not directly join the steel beam to the vertical web of the split tee by joining the steel beam with the high-strength bolt via the angle, and then joining the steel beam to the joint angle outside the tip of the vertical web of the split tee . Here, the split tee and the joint angle function as joining hardware between the steel column and the steel beam. The present invention is particularly effective when applied to a high-strength bolted joint structure of a box-shaped column and an H-shaped beam. Hereinafter, the steel column is described as a box-shaped cross-section column, and the steel beam is described as an H-shaped cross-section beam.

In the present invention, the vertical web of the split tee is arranged parallel to the material axis direction of the box-shaped column and fixed to the box-shaped column, and an H-shaped beam is attached to the split tee via a joint angle. (1) When mounting an H-shaped section beam on a box-shaped section column, the adjustment of the position of the joint angle can be easily performed, so the restrictions on the work of adjusting the position of the H-shaped section beam are eased and construction is performed. Is improved. (2) Since the split tee is fixed to the box-shaped column before the box-shaped column is erected at a factory or a construction site, in the case of the box-shaped column, 2
High-strength bolts can be joined by inserting a high-strength bolt from the inside using the device described in Japanese Patent Application Publication No. 000-213070, and only high-strength high-strength bolts that do not have an expensive and complicated one-side tightening mechanism Enables a high-strength bolt joint structure. As a result, the cost can be significantly reduced, the mechanical quality can be stabilized even for a large structure, and a more secure bonding structure can be realized.

[0008] The contact surface between the joint angle and the split tee and the contact surface between the joint angle and the H-shaped section beam are set at 0.
It is effective to increase the friction by applying a high frictional treatment to obtain a slip coefficient of 6 or more. This joint angle has a mountain-shaped cross section as a basic shape, and one flange portion having a bolt hole (hereinafter, referred to as a “vertical plate”) is attached to a side surface of a vertical web of upper and lower split tees fixed to a box-shaped column. A part of the other flange portion having a bolt hole (hereinafter referred to as a “horizontal plate”) located outside the split tee is joined to the upper and lower flanges of the H-shaped beam by high strength bolting. (Hereinafter referred to as “joint angle”).

The vertical plate of the joint angle, which is joined to the vertical web of the split tee by high-strength bolts, basically has a rectangular shape or a shape in which a corner on the outer side of the rectangle (the side on which the H-shaped beam is mounted) is obliquely cut away. Shape. Here, the shape in which the corners are cut off obliquely is not only to reduce the weight and cost, but also to avoid the interference with the H-shaped beam when attaching the H-shaped beam. This is to facilitate the movement and attachment. When attaching an H-shaped cross section beam between the upper and lower split tees, basically, the joint angles on the both sides of the vertical web for the upper and lower split tees are turned upside down, respectively. A pair of H-shaped beams are sandwiched between the horizontal plates of a pair of upper and lower joint angles, and the high-strength bolts are connected to the horizontal plates of the upper and lower joint angles. . At this time, the web of the H-shaped section beam is located in the space between the vertical plates of the joint angle joined to both surfaces of the vertical web in the flange portion region of the split tee.

When the H-shaped cross-section beam is attached to one long split tee, a vertical plate of a joint angle is joined to the upper and lower sides of the vertical web of the split tee with high strength bolts on both sides, respectively. Then, the flange of the H-shaped section beam is joined to the horizontal plate by high strength bolts. At this time, H
The web portion of the cross-sectional beam is located in the space between the vertical plates of the joint angle joined to both sides of the vertical web in the flange portion region of the split tee. Regardless of whether the H-shaped beam is attached to the upper or lower split tee or to one long split tee, it is better that there is no gap between the vertical plate of the joint angle and the web of the H-shaped beam. Since the bonding structure is stable, it is effective to eliminate the gap by abutting or interposing a filler plate.

When a long split tee is used, the web of the H-shaped cross section beam is split at the middle of the vertical web of the long split tee in order to secure the bonding strength more stably. It is also effective to join the high-strength bolts through the holes. In this case, when the vertical web of the long split tee and the web of the H-shaped section beam are different,
It is effective to eliminate a gap by interposing a filler plate. In addition, the joint surface, especially the joint surface between the flange of the H-shaped section beam and the vertical plate of the split tee at the joint angle, is 0.6
It is more effective to increase the joining friction by performing a high friction treatment to obtain the above slip coefficient. It should be noted that it is not an absolute condition that joining of the box-shaped column and the split tee is all performed by high-strength bolt joining, but welding by joining can also be considered. Also, partial use of the one-side bolt can be considered.

[0012]

(Embodiment 1) Embodiment 1 of the present invention will be described below with reference to FIGS. 1 (a) and 1 (b). In the first embodiment, the present invention is applied to a joint structure between a box-shaped column and an H-shaped beam using a split tee.
(A) and (b) show a pair of upper and lower split tees 2a and 2b, each of which has an H-shaped cross-section beam on a box-shaped cross-section column 1 and is arranged at predetermined intervals above and below a side surface and joined by a high-strength bolt 3a. An example of a joint structure of a box-shaped column 1 and an H-shaped beam 4 joined by high-strength bolts 5 through a plurality of joint angles 6a to 6h joined to this split tee with high-strength bolts 5a. is there. The H-shaped section beam 4 is usually attached to the first to fourth side faces of the box-shaped section column 1 in general, but here, one H-shaped section beam 4 is attached to one side face of the box-shaped section column. The case will be described as a representative.

In FIGS. 1 (a) and 1 (b), reference numeral 1 denotes a box-shaped column having a pair of upper and lower split tees 2a and 2b on its side.
Are joined at predetermined intervals by high-strength bolts 3a, and the upper flange 4a of the H-shaped section beam 4 is joined to the upper split tee 2a by high-strength bolts via joint angles 6a, 6b, 6c, 6d, The lower flange 4b of the H-shaped section beam 4 is connected to the lower split tee 2b with high-strength bolts via joint angles 6e, 6f, 6g, and 6h. The split tees 2a and 2b are composed of a flange 2f joined to the box-shaped section column 1 by a high-strength bolt 3a, and a vertical web 2u having a surface parallel to the axial direction of the box-shaped section column 1 and perpendicular to the flange 2f surface. The cross section has a T-shape.

The H-shaped cross-section beam 4 is positioned such that the front end surface abuts against the front end surface of the vertical web 2u of the split tees 2a and 2b (however, there is a gap and does not abut). 4a is a high-strength bolt 5a common to the side of the vertical web 2u of the upper split tee 2a.
Are jointed by common high-strength bolts 5 via joint angles 6a and 6b and 6c and 6d, which are abutted and joined in the opposite directions, and the lower flange 4b is
The joints 6e and 6f and the joints 6g and 6h, which are oppositely joined to the side surfaces of the vertical web 2u of the lower split tee 2b by the common high-strength bolts 5a, are joined by the common high-strength bolts 5 respectively. Are joined.

The joint angles 6a to 6h are shown in FIG.
As shown in FIG. 3, the vertical plate a having the bolt holes 7 and the horizontal plate b having the bolt holes 8 have a mountain-shaped cross section, and the vertical plate a is provided on the side of the vertical web 2u of the split tees 2a and 2b. Joined by high-strength bolt 5a, horizontal plate b
Are joined to the upper and lower flanges 4a, 4b of the H-shaped section beam 4 by high-strength bolts 5. Here, the clearance between the high friction bolt 5 and the bolt holes (not shown) of the upper and lower flanges 4a and 4b of the H-shaped section beam 4 and the high-strength bolt 5 is set to ± 0. Also, at the joints between the joint angles 6a to 6h and the vertical webs 2u of the upper and lower split tees 2a and 2b and at the joints between the joint angles and the upper and lower flanges 4a and 4b of the H-shaped section beam 4, in order to strengthen the joint friction. A friction surface additional washer 9 is interposed on both the head side and the nut side of the high-strength bolt 5a, and at the joint between the joint angles 6a to 6h and the upper and lower flanges 4a, 4b of the H-shaped section beam 4, Each joint angle is H-shaped beam 4
Slip is generated between the flange surface of the first member and the bearing surface of the additional washer 9.

An example of the procedure for constructing the high-strength bolted joint structure between the box-shaped column and the H-shaped beam will be described below. (1). At the factory, a pair of upper and lower split tees 2a and 2b are joined to the box-shaped section column 1 by joining them with high-strength bolts 3a. At this time, the high-strength bolt 3a is inserted into the bolt hole from the inner side of the box-shaped section column 1 and tightened on the outer side.
An apparatus described in JP 13070 can be used. (2). The box-shaped column 1 to which the pair of upper and lower split tees 2a and 2b is attached is carried to the construction site.

(3). At the construction site, a pair of left and right joint angles 6g on the lower side of the vertical web 2u of the lower split tee 2b in a state where the box-shaped section column 1 is erected,
6h, the respective vertical plates a are joined to the side surface of the vertical web 2u of the lower split tee 2b by one common high-strength bolt 5a, and the horizontal plates b of the joint angles 6g and 6h are connected. With the lower flange 4b of the H-shaped cross-section beam 4 supported on the upper surface of the lower split tee 2b, the upper right and left joint angles 6e and 6f are opposed to the side surfaces of the vertical web 2u of the lower split tee 2b. In a state where the plate b is in contact with the upper surface of the lower flange 4b of the H-shaped section beam 4, each of the vertical plates a is attached to one side of a vertical web 2u of the lower split tee 2b by one common high-strength bolt 5a. To join. At this time, the web 4u of the H-shaped section beam 4 is located between the vertical plates a of the pair of left and right joint angles 6e and 6f on the upper side of the lower split tee 2b,
The H-shaped section beam 4 is positioned substantially at a predetermined position.

(4). The pair of left and right joint angles 6c and 6d on the lower side of the upper split tee 2a are turned in the opposite direction, and each horizontal plate b is brought into contact with the lower surface of the upper flange 4a of the H-shaped cross-section beam 4. Vertical plate a
To the side of the vertical web 2u of the upper split tee 2a and joined by one common high-strength bolt 5a.
Also, the upper and lower joint angles 6a and 6b on the upper side of the upper split tee 2a are opposite to each other, and the respective horizontal plates b are in contact with the upper surface of the upper flange 4a of the H-shaped cross-section beam 4, and The plate a is brought into contact with the side surface of the vertical web 2u of the upper split tee 2a and is joined by one common high-strength bolt 5a. (5). Horizontal plate b and H of the upper joint angle 6a
One side of the upper flange 4a and the lower joint angle 6c of the cross-sectional beam 4 are joined by one common high-strength bolt 5, and the horizontal plate b of the upper joint angle 6b is
The other side of the upper flange 4a of the cross-section beam 4 and the horizontal plate b of the lower joint angle 6d are joined by one common high-strength bolt 5, and the H-section beam 4 is positioned at a predetermined position. . (6). The horizontal plate b of the upper joint angle 6e of the lower split tee 2b and the lower flange 4 of the H-shaped section beam 4
b, and the horizontal plate b of the lower joint angle 6g are joined by one common high-strength bolt 5, and the horizontal plate b of the upper joint angle 6f and the lower flange of the H-shaped section beam 4 are joined. One side of 4b and the horizontal plate b of the lower joint angle 6h are joined by one common high-strength bolt 5. In this way, a joint structure between a box-shaped column and an H-shaped beam as shown in FIGS. 1A and 1B is obtained.

In the construction of such a joint structure between a box-shaped column and an H-shaped beam, for example, a high-strength bolt with vertical and split tees is completed on a box-shaped column at a factory and transported to a building site. When the box-shaped column is to be built, the position of the joint angle can be easily adjusted when connecting the H-shaped beam with a high-strength bolt via a joint angle. Can be performed stably, and the workability can be improved. Further, when the split tee is joined to the box-shaped column 1 with high-strength bolts, a high-strength bolt is inserted from the inside of the box-shaped column with the use of, for example, an apparatus described in Japanese Patent Application Laid-Open No. 2000-213070. The split tee installation work can be completed easily at the factory or at the site of the construction site, eliminating the need for expensive one-side bolts. Joining is possible,
The joining cost can be significantly reduced. Also,
A high-strength bolt having a strength several steps higher than the one-side bolt can be used, and the strength of the joint can be enhanced.

(Embodiment 2) Embodiment 2 of the present invention will be described below with reference to FIGS. 4 (a) and 4 (b). In the second embodiment, similar to the first embodiment, the present invention is applied to a joint structure of a box-shaped column and an H-shaped beam using a split tee, as shown in FIGS. 4 (a) and 4 (b). The upper and lower flanges 4a, 4b of the H-shaped cross-section beam 4 are connected to the vertical web 2u of the long split tee 2e, which is joined to the side surface of the box-shaped column 1 by high-strength bolts, via the joint angles 6a to 6h. And a web 4u of an H-shaped section beam 4 joined by a high-strength bolt 5 to a middle of a vertical plate (web) of a long split tee 2e via a pair of splice plates sp. 1 shows an example of a joint structure between a beam 1 and an H-shaped section beam 4. In the second embodiment, the web of the H-shaped beam 4 is interposed between the vertical web 2u of the long split tee 2e via a pair of splice plates sp in that a long split tee 2e is used as the split tee. Although the fourth embodiment differs from the first embodiment in that 4u is joined by high-strength bolts 5, the joint angles 6a to 6h and the mounting structure are the same as in the first embodiment, and detailed description of this portion is omitted.

In the second embodiment, the vertical web 2u of the long split tee 2e is connected to the joint angles 6a to 6h.
The number of the high-strength bolts 5a for joining the flanges 4a and 4b of the H-shaped cross-section beam 4 via the joint is small, and the strength of the joint may not be sufficient. Therefore, the vertical plate (web) of the long split tee 2e is required. Between the web 4u of the H-section beam 4 and the high-strength bolt 5 through a pair of splice plates sp.
The joint strength is strengthened by joining the joints. 4 (a) and 4 (b), a long split tee 2e is composed of a flange 2f which is connected to the box-shaped column 1 with high-strength bolts, and a flange 2f which is parallel to the axial direction of the box-shaped column 1.
A vertical web 2u having a plane perpendicular to the plane
It has a shape such that the vertical web 2u of the upper and lower split tees 2a, 2b and the flange 2f are extended and integrated as used in the first embodiment.

The H-shaped cross-section beam 4 is positioned such that the distal end surface abuts against the distal end surface of the vertical web 2u of the long split tee 2e (however, there is a gap and does not abut). The flanges 4a are connected to the upper side surfaces of the vertical web 2u of the long split tee 2e in opposite directions by joint angles 6a and 6b and 6c and 6d which are abutted and joined by common high-strength bolts 5a.
Each is joined by a common high-strength bolt 5, and the lower flange 4b is connected to a vertical web 2u of a long split tee 2e.
Angles 6e and 6 which are abutted and joined on opposite sides of the lower side by common high-strength bolts 5a in opposite directions.
f, 6g, and 6h, which are joined by a common high-strength bolt 5. Further, the web 4u is connected to the middle portion of the vertical web 2u of the long split tee 2e and to the common portion via a pair of left and right splice plates sp. They are joined by high strength bolts 5. Here, since there is a step (2u> 4u) between the thickness of the vertical web 2u of the long split tee 2e and the thickness of the web 4u of the H-shaped section beam 4, a filler for filling the gap due to this thickness step is provided. Plate Fp
Is interposed.

An example of the procedure for constructing the high-strength bolted joint between the box-shaped column and the H-shaped column in the second embodiment will be described below. (1). In a factory, a long split tee 2e is mounted on a box-shaped cross-section column
a. (2). The box-shaped column 1 to which the long split tee 2e is attached is carried to the construction site. (3). At the construction site, a pair of lower left and right joint angles 6 is provided on both lower side surfaces of the vertical web 2u of the long split tee 2e in a state where the box-shaped section column 1 is erected.
g, 6h and then orientation to the opposite, respective vertical plates a joining by a single common high strength bolts 5a to the side of the vertical web 2u split tee 2e of Nagasun, the joint angle 6 g, 6h of While the lower flange 4b of the H-shaped section beam 4 is supported on the upper surface of the horizontal plate b, the upper left and right joint angles 6e and 6f are connected to the long split tee 2.
e, with each horizontal plate b abutting on the upper surface of the lower flange 4b of the H-shaped cross-section beam 4 with the direction of the side facing the side of the vertical web 2u, each vertical plate a is attached to a long split tee. It is joined to the side surface of the vertical web 2u of 2e by one common high-strength bolt 5a. At this time, the H-shaped beam 4
Is located between the vertical plates a of the pair of left and right joint angles 6e and 6f on the lower side of the long split tee 2e, and the H-shaped cross-section beam 4 is positioned substantially at a predetermined position.

(4). The pair of left and right joint angles 6c and 6d on the lower side of the upper side of the long split tee 2e are turned in the opposite direction, and each horizontal plate b is H-shaped beam 4
Each vertical plate a is attached to the lower surface of the upper flange 4a and the vertical web 2u of the long split tee 2e is
And is joined by one common high-strength bolt 5a. Also, the upper and lower joint angles 6a and 6b on the upper side of the long split tee 2e are turned upside down, and the respective horizontal plates b are brought into contact with the upper surface of the upper flange 4a of the H-shaped section beam 4. In this state, each vertical plate a is brought into contact with the side surface of the vertical web 2u of the long split tee 2e and is joined by one common high-strength bolt 5a. (5). Horizontal plate b and H of upper joint angle 6a
One side of the upper flange 4a of the cross section beam 4 and the lower joint angle 6c are joined by one common high-strength bolt 5, and the horizontal plate b of the upper joint angle 6b and H
The other side of the upper flange 4a of the cross-section beam 4 and the horizontal plate b of the lower joint angle 6d are joined by one common high-strength bolt 5, and the H-section beam 4 is positioned at a predetermined position. .

(6). The horizontal plate b of the upper joint angle 6e on the lower side of the long split tee 2e, one side of the lower flange 4b of the H-shaped section beam 4 and the horizontal plate b of the lower joint angle 6g are combined into one The horizontal plate b of the upper joint angle 6f, the other side of the lower flange 4b of the H-shaped section beam 4 and the horizontal plate b of the lower joint angle 6g are joined together by a common high-strength bolt 5. They are joined by a common high-strength bolt 5. (7). A splice plate sp is brought into contact with both side surfaces of the intermediate portion of the vertical web 2u of the long split tee 2e and both side surfaces of the web 4u of the H-shaped cross-section beam 4 and joined by high-strength bolts 5. At this time, since the vertical web 2u of the long split tee 2e and the web 4u of the H-shaped cross-section beam 4 have different thicknesses, gaps due to the thickness difference are filled in both side surfaces of the web 4u of the H-shaped cross-section beam 4 having a small thickness. Filler plate F for
p is inserted. In this way, FIG.
A joint structure between the box-shaped column and the H-shaped beam as shown in FIG. In the construction of such a joint structure between the box-shaped column and the H-shaped beam, the same effect as in the first embodiment can be obtained. In addition, the split tee is made into a long split tee, and the upper part, the middle part, Since the H-shaped section beam 4 and the high strength bolt are joined at the lower portion, the joint strength can be further enhanced.

(Embodiment 3) Embodiment 3 is described below with reference to FIG.
Description will be made based on (a) and (b). Example 3
Similar to the first embodiment, the present invention is applied to a high-strength bolted joint structure of a box-shaped column and an H-shaped beam using a split tee, and is basically the same as the first embodiment. Things. In the first embodiment, the joining of the vertical plate a of the joint angle to the vertical web 2u of the pair of upper and lower split tees 2a and 2b is performed by one high-strength bolt, respectively, and the horizontal plate b of the joint angle and the H-shaped beam 4 The upper and lower flanges 4a, 4b are joined by one high-strength bolt 5, respectively.
As shown in FIGS. 5 (a) and 5 (b), the split tees 2c and 2d are made to increase the horizontal length of the vertical web 2u and the joint angles 6i to 6p in the horizontal direction to increase the split tees 2c and 2d. The joining of the vertical plates a of the joint angles 6i to 6p to the vertical web 2u is performed by two high-strength bolts 5a in the horizontal direction, respectively, and the horizontal plates b of the joint angles 6i to 6p and the flanges 4a of the H-shaped cross-section beams 4, The fourth embodiment differs from the first embodiment in that the joining of 4b is performed by two high-strength bolts 5 in the horizontal direction.

5A and 5B, reference numeral 1 denotes a box-shaped column, and a pair of upper and lower split tees 2c and 2d are joined to the side surface at a predetermined interval, and an H-shaped beam 4 is provided. The upper flange 4a is joined to the upper split tee 2c side, and the lower flange 4b of the H-shaped beam 4 is joined to the lower split tee 2d side. The split tees 2c and 2d are formed from a flange 2f joined to the box-shaped section column 1 by a high-strength bolt 3a and a vertical web 2u having a surface parallel to the axial direction of the box-shaped section column 1 and perpendicular to the flange 2f surface. The vertical web 2u has two bolt holes 7 in the vertical direction. As shown in FIGS. 6 and 7, the joint angles 6i to 6p each have a vertical plate a having two bolt holes 7 in the horizontal direction and a horizontal plate b having two bolt holes 8 in the horizontal direction. Things.

The H-shaped cross-section beam 4 is positioned so that the front end surface thereof abuts against the front end surface of the vertical web 2u of the split tees 2c and 2d (however, there is a gap and does not abut). 4a is the horizontal of the joint angles 6i and 6j, 6k and 6l in which the vertical plate a is abutted and joined by two common high-strength bolts 5a in the opposite direction to the side of the vertical web 2u of the upper split tee 2c. The lower flange 4b is joined to the plate b by two common high-strength bolts 5 in the horizontal direction, and the lower flange 4b is opposite to the side surface of the vertical web 2u of the lower split tee 2d and has two common horizontal directions. The vertical plates a are abutted and joined by the high-strength bolts 5a. The joint angles 6m and 6n, and the horizontal plates b of 6o and 6p are joined by two common high-strength bolts 5 in the horizontal direction. There. Since the high-strength bolted joint structure between the box-shaped column 1 and the H-shaped column 4 is basically obtained by a procedure generally similar to that of the first embodiment, the description of this procedure is omitted. In the third embodiment, in addition to the functions and effects of the first embodiment, the length of the split tees 2a, 2b and the joint angles 6i to 6p in the horizontal direction is increased to increase the number of high-strength bolts 5a and 5 in the horizontal direction. Therefore, there is an operational effect that the joint strength can be more stably secured.

(Embodiment 4) Embodiment 4 of the present invention will be described below with reference to FIGS. 8 (a) and 8 (b). In the fourth embodiment, as in the first embodiment, the present invention is applied to a high-strength bolted joint structure of a box-shaped column and an H-shaped beam using a split tee.
This is similar to the first embodiment. In the fourth embodiment, a pair of upper and lower split tees 2a, 2b attached to the side surface of the box-shaped section pillar 1 with high-strength bolts 3a has a shape in which a part of an outer corner is cut off on the side surface of the vertical web 2u. The point that the H-shaped section beam 4 is attached via the joint angles 6q to 6x, the width (height) of the joint angles 6q to 6x is increased, and the vertical web 2 of the split tees 2a and 2b
The vertical plates a of the joint angles 6q to 6x are joined to the u by two high-strength bolts 5a in the vertical direction, respectively, and the joint angles 6q to 6x and the H-shaped beam 4
This embodiment differs from the first embodiment in that the joining of the horizontal plates b of the flanges 4a and 4b is performed by two high-strength bolts 5 in the horizontal direction.

8 (a) and 8 (b), reference numeral 1 denotes a box-shaped column, and a pair of upper and lower split tees 2a and 2b are joined to a side surface of the column at a predetermined interval. The upper flange 4a is joined to the upper split tee 2a side,
The lower flange 4b of the cross section beam 4 is joined on the lower split tee 2b side. These split tees 2a and 2b
A flange 2f joined to the box-shaped section column 1 by a high-strength bolt 3a; and a flange 2f parallel to the axial direction of the box-shaped section column 1
A vertical web 2u having a plane perpendicular to the plane
It has two bolt holes 7 in the vertical direction on the upper side and the lower side of the vertical web 2u. As shown in FIGS. 9 and 10, each of the joint angles 6q to 6x has a mountain-shaped cross section including a vertical plate a having two bolt holes 7 in a vertical direction and a horizontal plate b having two bolt holes 8 in a horizontal direction. , And have a shape in which a part of an outer corner is cut out.

The H-shaped cross-section beam 4 is positioned such that the distal end surface abuts against the distal end surface of the vertical web 2u of the split tees 2a and 2b (however, there is a gap and does not abut). 4a is a vertical plate a having a direction opposite to the side surface of the vertical web 2u of the upper split tee 2a.
Are jointed by two common high-strength bolts 5 in the horizontal direction to joint angles 6q and 6r, 6s and 6t horizontal plates b joined by two common high-strength bolts 5a in the vertical direction, The lower flange 4b is opposite to the side surface of the vertical web 2u of the lower split tee 2b, and the vertical plate a is joined in the vertical direction by joint angles 6u, 6v, 6w, and 6x, which are joined by two common high-strength bolts 5a. Each of the horizontal plates b is joined by two common high-strength bolts 5 in the horizontal direction. Box-shaped column 1 of the fourth embodiment
And the high-strength bolt joint structure of the H-shaped section column 4 basically
Since it can be obtained by a procedure that is substantially common to the case of the first embodiment, the description of this procedure is omitted. In the fourth embodiment, the same operation and effect as those of the first embodiment can be obtained, and the split tees 2a, 2a
b and the joint angles 6i to 6p are increased in width and length, and two high-strength bolts are joined in the vertical direction on the vertical plate a side and in the horizontal direction on the horizontal plate b side, respectively. There is an operational effect that the joint strength can be more stably secured.

Fifth Embodiment A fifth embodiment of the present invention will be described below with reference to FIGS. 11 (a) and 11 (b). In the fifth embodiment, as in the first embodiment, the present invention is applied to a joint structure between a box-shaped column and an H-shaped beam. In the fifth embodiment, H is connected to the side surface of the box-shaped section column 1 via a long split tee 2e which is joined with a high-strength bolt.
This shows an example of a joint structure between a box-shaped column and an H-shaped beam joined with the H-shaped beam 4. The length of the H-shaped beam 4 is determined by using one long split tee 2e. Shorter than that, joint angles 6y and 6z, 6yo and 6zo
The vertical plate a is joined to the vertical web 2u of the long split tee 2e by the high-strength bolt 5a inside the upper and lower flanges 4a and 4b of the H-shaped section beam 4, and the joint angles 6y and 6z, 6yo and 6zo Horizontal plate b is H-shaped beam 4
This is a joint structure between a box-shaped column and an H-shaped beam joined to the inner surfaces of the upper and lower flanges 4a and 4b by high-strength bolts 5, which is different from the first to fourth embodiments.

In FIGS. 11 (a) and 11 (b), reference numeral 1 denotes a box-shaped column, and a long split tee 2e is joined to a side surface by a high strength bolt 3a. The long split tee 2e is composed of a flange 2f which is bolted to the box-shaped section column 1 with high strength, and a vertical web 2u having a surface parallel to the axial direction of the box-shaped section column 1 and perpendicular to the flange 2f surface. The cross section is formed in a T-shape, and the length is shorter than the height of the H-shaped cross-section beam 4 by the thickness of the lower flange 4a.
Are formed with two bolt holes in the vertical direction on the upper side and the lower side, respectively. Figure 1 shows the joint angles.
2, two bolt holes 7 in the vertical direction as shown in FIG.
A vertical plate a having a vertical plate a and a horizontal plate b having two bolt holes 8 in the horizontal direction have a mountain-shaped cross section, and have a shape in which a part of an outer corner of the vertical plate a is cut away. H
The cross-section beam 4 is positioned such that the distal end surface abuts against the distal end surface of the vertical web 2u of the long split tee 2e (however, there is a gap and does not abut).
Joint angle 6 joined by high-strength bolt 5a to the side of vertical web 2u of long split tee 2e
It is joined by a high-strength bolt 5 via y, 6z, 6yo, 6zo.

On the upper side of the long split tee 2e which joins the upper flange 4a of the H-shaped section beam 4, the direction of the vertical plate 2a is opposite to that of both sides of the vertical web 2u of the long split tee 2e. Two high-strength bolts 5a in the vertical direction
Left and right joint angles 6y, 6
With the lower surface of the upper flange 4a of the H-section beam 4 supported on the upper surface of the horizontal plate b of z, the upper flange 4 of the H-section beam 4
a and the horizontal plates b of the joint angles 6y and 6z are respectively joined by two high-strength bolts 5 in the horizontal direction. On the lower side of the long split tee 2e that joins the lower flange 4b of the H-shaped cross-section beam 4, the vertical plate a is placed in the vertical direction with opposite directions on both sides of the vertical web 2u of the long split tee 2e. With two common high-strength bolts 5
a pair of left and right joint angles 6y joined by a
When the upper surface of the lower flange 4b of the H-shaped section beam 4 is in contact with the lower surface of the horizontal plate b of o, 6zo, the lower plate 4b of the H-shaped section beam 4 and the horizontal plate b of the joint angles 6yo, 6zo are Each is joined by two high strength bolts 5 in the horizontal direction.

An example of the procedure for applying the high-strength bolted joint structure of the box-shaped column and the H-shaped column in the fifth embodiment will be described below. (1). At the factory, a long split tee 2e is attached to the box-shaped section column 1 by joining with a high-strength bolt 3a. (2). The box-shaped column 1 to which the long split tee 2e is attached is carried to the construction site. (3). At the construction site, in a state where the box-shaped column 1 is erected, a horizontal plate b of one (front side) joint angle 6y of the upper side is previously attached to the upper side surface of the vertical web 2u of the long split tee 2e. Upper flange 4 of H-shaped section beam 4
The lower surface of the vertical plate a of the joint angle 6y and the vertical plate a of the other (rear side) joint angle 6z are joined to the lower surface of the vertical plate a of a long split tee 2e. The vertical plate a of the joint angle 6y and the vertical plate a of the other (rear side) joint angle 6z are abutted from both sides with the direction opposite to the side surface of 2u.
And the vertical web 2u of the long split tee 2e are joined by two common high-strength bolts 5a in the vertical direction.
At this time, the joint positions of the joint angles 6y and 6z are set so that the upper surface of the upper flange 4a of the H-shaped section beam 4 and the upper end surface of the long split tee 2e are at the same level. The web 4u of the cross section beam is located between the vertical plates a of the pair of left and right joint angles 6y and 6z on the upper side of the lower long split tee 2b side.
Is positioned approximately at a predetermined position.

(4). With the lower surface of the upper flange 4a of the H-shaped cross-section beam 4 supported on the upper surfaces of the horizontal plates b of the joint angles 6y and 6z, a pair of left and right joint angles is provided on the lower side surface of the vertical web 2u of the long split tee 2e. The vertical plates a of 6yo and 6zo are in contact with each other, and the horizontal plate b is in contact with the upper surface of the lower flange 4b of the H-shaped section beam 4 so that the vertical web 2u of the long split tee 2e has the vertical joints 6yo and 6zo. The plate a is joined by two common high-strength bolts 5a in the vertical direction, and the horizontal plate b of the joint angles 6yo and 6zo and the lower flange 4b of the H-shaped section beam 4 are respectively connected to two common heights in the horizontal direction. Joined by force bolt 5. Thus, FIG.
(A) As shown in (b), the joint structure of the box-shaped column and the H-shaped beam is obtained. When the joint strength is further stabilized in the case of the fifth embodiment, as in the case of the second embodiment, the intermediate between the vertical web 2u of the long split tee 2e and the web 4u of the H-shaped cross-section beam 4 is used. Plate sp (filler plate F)
The joining via p) is also considered.

In the high-strength bolt joint structure of the fifth embodiment, since the number of long split tees is half,
Attaching a long split tee to a box-shaped column is easy. Also, since the number of joint angles is half, it is possible to reduce the construction cost and shorten the construction period. In addition, although it is common to each of the above embodiments,
The length of the vertical web 2u of the long split tee 2e is H
A long split tee 2e thicker than the beam 4
When a high-strength bolt is connected to the vertical web 2u through an H-shaped beam 4 joint angle, a gap is generated between the vertical plate a of the joint angle and the web 4u of the H-shaped beam 4. It is not essential to fill the gap, but if it is necessary to fill the gap, consider inserting a filler plate into the gap.

The present invention is not limited to the contents of the above embodiment. For example, the above embodiment is applied to the case where the steel column is a rectangular box-shaped column and the steel column is an H-shaped column, but the steel column is a circular box-shaped column or H-shaped column. The present invention can be applied to the case of a column having a cross section of a shape. Also, conditions such as the shape, size, arrangement, and joining of split tees, conditions such as shape size, arrangement, bolt hole diameter, and arrangement of joint angles, and setting conditions for high-strength bolts, nuts, and washers,
Whether or not a filler plate is used, high friction treatment for each joining surface, joining procedure, and the like are changed within a range satisfying the above claims, depending on an object to be joined, a joining site, material strength, design strength, and the like. Things.

[0039]

According to the present invention, the vertical web of the split tee is arranged in parallel with the axial direction of the steel column and fixed to the steel column, and the steel beam is connected to the split tee with a high strength through a joint angle. (1) When mounting a steel beam on a steel section column, the adjustment of the position of the joint angle can be easily performed, so the restrictions on the work of adjusting the position of the steel beam are eased and the workability is improved. Is done. (2) In particular, when the steel column is a box-shaped column, before building the box-shaped column in a factory or a construction site,
A high-strength bolt joint structure using only high-strength high-strength bolts without a complicated one-side tightening mechanism from inside can be realized. As a result, the cost can be significantly reduced, and the mechanical quality can be stabilized even for a large-sized structure, so that a more secure bonding structure can be realized.

[Brief description of the drawings]

FIG. 1A is a partial cross-sectional side view showing 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. Aa-Ab arrow explanatory drawing of a figure.

2A is an explanatory front view showing an example of the shape of a joint angle used in FIG. 1, and FIG. 2B is an explanatory side view of FIG.

3A is an explanatory front view showing a shape example of a joint angle used in FIG. 1, and FIG. 3B is an explanatory side view of FIG. 3A.

FIG. 4A is a partial cross-sectional side view showing a high-strength bolted joint structure between a box-shaped column and an H-shaped beam in Example 2 of the present invention, and FIG. FIG.

FIG. 5A is a partial cross-sectional side view showing 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. FIG.

6A is a front explanatory view showing an example of the shape of a joint angle used in FIG. 5, and FIG. 6B is a side explanatory view of FIG.

7A is an explanatory front view showing an example of the shape of a joint angle used in FIG. 5, and FIG. 7B is an explanatory side view of FIG.

FIG. 8A is a partial cross-sectional side view showing a high-strength bolt joint structure of a box-shaped column and an H-shaped beam in Example 4 of the present invention, and FIG. FIG.

9A is a front explanatory view showing a shape example of a joint angle used in FIG. 8, and FIG. 9B is a side explanatory view of FIG. 9A.

10A is a front explanatory view showing a shape example of a joint angle used in FIG. 8, and FIG. 10B is a side explanatory view of FIG.

11A is a partially sectional side view illustrating a high-strength bolted joint structure between a box-shaped column and an H-shaped beam in Example 5 of the present invention, and FIG. Ea-Eb arrow explanatory drawing of a figure.

12 (a) is a front explanatory view showing an example of the shape of the joint angle used in FIG. 11, and FIG. 12 (b) is a side explanatory view of FIG.

13A is a front explanatory view showing a shape example of a joint angle used in FIG. 11, and FIG. 13B is a side explanatory view of FIG.

FIG. 14 is a three-dimensional explanatory view showing the entire structure of a general high-strength bolt joint structure using a conventional box-shaped column and an H-shaped beam.

FIG. 15 (a) is a joint structure of a box-shaped column, a split tee, and an H-shaped beam in a conventional high-strength bolted joint structure of a box-shaped column and an H-shaped beam as shown in FIG. 14; Partial cross-sectional explanatory view showing an example, FIG.
FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Box-shaped column 2 Split tee 2a-d split tee 2e Long split tee 2f Flange (split tee) 2u Vertical web (split tee) 3 High strength bolt (one side bolt) 3a High strength bolt 4 H-shaped beam 4a Upper flange (H-section beam) 4b Lower flange (H-section beam) 4u Web (H-section beam) 5, 5a High-strength bolt sp Splice plate Fp Filler plate 6a-6z Joint angle 6y, 6yo Joint angle 6z, 6zo Joint angle 7 Bolt hole (vertical plate) 8 Bolt hole (horizontal plate) 9 Washer with additional friction surface

Claims (4)

[Claims] In a high strength bolted structure of a steel column and a steel beam for joining a steel column and a steel beam with a high strength bolt via a split tee, a web surface of the split tee is aligned with a material axis direction of the column. It is arranged in parallel, the flange part is high strength bolted to the steel column, and the steel beam is high strength bolted to the split tee web. High-strength bolted structure of steel columns and steel beams, characterized by being bolted together. 2. The high-strength bolted joint structure between a steel column and a steel beam according to claim 1, wherein the steel column is a rectangular box-shaped section member or an H-shaped section member. 3. The steel column is a circular box-shaped section member, and the flange portion of the split tee is formed into a curved surface so as to substantially contact the outer peripheral surface of the circular box-shaped section member. The high-strength bolted joint structure between a steel column and a steel beam according to claim 1, wherein the flange portions are joined by high-strength bolts. 4. A split tee is arranged so that a web surface is parallel to a material axis direction of a column before a steel column is erected at a factory or a construction site, and a flange portion is formed on the steel column. High-strength bolted joints between steel columns and steel beams characterized by bolting steel beams to the web part of the split tee via a joint angle after bolting and building a steel column Method.