JP2537716B2 - Joint structure of steel pipe column and beam and joint metal used for it - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure of a steel pipe column and a beam, which is a material having a closed cross section, and a joint metal used for the same in the field of civil engineering, construction or bridge.

[0002]

2. Description of the Related Art Joining a joint between a steel pipe column and a steel beam is carried out by means of bolt joining, except welding. In such bolt joining, a plate-shaped metal provided with a tap screw hole or the like is provided in advance in the steel pipe in order to prevent access to the inside of the steel pipe column when tightening the bolt, or only the connection part is entirely made of special metal. Various proposals have been made.

As an example thereof, it is possible to use a metal joint as shown in FIG. In the figure, 1 is a steel pipe column, 2 is H
Although it is a beam made of a type steel frame, the steel pipe column 1 is provided with a mounting hole 12 on the side of the joint portion, and the upper and lower flanges 2a of the beam 2 are welded with an external joint metal 3 which is a T-shaped joint. It can be mounted with bolts. On the other hand, on the inner side of the steel pipe column 1, an annular internal joining metal member 4 having a tap screw hole 11 is arranged. Then, the external joint metal 3 is brought into contact with the outer peripheral surface of the steel pipe column 1, and the external joint metal 3 and the internal joint metal 4 are attached to each other with the high-strength bolt 5 as a tap screw that penetrates the steel pipe column 1. The steel pipe pillar 1 is sandwiched between and tightened.

In this way, the steel pipe column 1 can be used as it is without cutting, and since welding is unnecessary, not only the processing is easy, but also the deterioration of the product accuracy due to the cutting and welding can be prevented. . Further, the internal joint metal 4 acts as an out-of-plane bending reinforcing member of the steel pipe column 1, and since the screw hole of the internal joint metal 4 is a tap screw, there is no fear of falling, etc. It can withstand hard handling.

[0005]

However, the joint structure of the steel pipe pillar and the beam using the internal joint metal 4 shown in FIG. 9 cannot cope with the change in the height (length) of the steel pipe pillar 1.

The object of the present invention is to eliminate the disadvantages of the above-mentioned conventional example, and in the joint portion between the steel pipe column and the beam, even if the steel pipe column receives an external force such as an out-of-plane bending stress through the beam, the steel pipe column The joint structure of a steel pipe column and a beam that can securely prevent the deformation of the steel pipe and can smoothly transmit the force from the beam to the beam by placing the steel pipe column inside in response to the change in the steel pipe column's cause and use it It is to provide a joint hardware.

[0007]

In order to achieve the above object, the present invention has a structure for joining a steel pipe column and a beam, in which a mounting hole is provided on a side portion of a joint portion of a steel pipe column, and on the other hand, a joint with a steel pipe column is made. Using a joining plate that is formed by tapping tap holes that open on the surface side and projecting hooks that have engaging holes that open in the vertical direction on the surface opposite to the joining surface to the steel pipe column The plate is joined to the inner surface of the steel pipe column by arranging it inside the steel pipe column, and the external joint metal provided on the beam end and this joint plate are connected to the joint hole and the tapped screw hole through the high-strength bolt. While tightening and fixing with, the joint plates of the inner surfaces facing each other of the steel pipe column are connected with a hook-shaped steel rod material that inserts an end into the engaging hole, and that the steel pipe column is filled with concrete. It is a summary.

Further, as a joining metal article for a steel pipe column and a beam, at least a tap screw hole for fastening with an external joining metal article provided at a beam end with the steel pipe column sandwiched is provided on the joining surface side of the steel pipe column. A joining plate that is provided so as to open on the joining surface side with the steel pipe column, and that has a hook that has an engaging hole that opens in the vertical direction on the surface opposite to the joining surface to the steel pipe column. Further, this joint plate is composed of a plurality of joint plates arranged as a pair on the opposing inner side surfaces of the steel pipe column for jointing the steel pipe column and the beam, and the joint plate as a pair is connected to the engaging hole. The gist is to combine a hook-shaped steel rod material into which an end portion is inserted with a joining plate.

[0009]

According to the present invention as set forth in claims 1 and 2, the joint plate provided on the inner side surface of the steel pipe column has a function of fixing the external joint metal provided at the beam end, and the steel pipe column joint portion. Also acts as a surface bending reinforcing member. Then, the joining plates facing each other on the inner surface of the steel pipe column are connected by inserting the end portions of the hook-shaped steel rod members into the engaging holes, and the concrete filling the inside of the steel pipe column connects the steel rod members. Since it is fixed, the force from the beam can be transmitted from the joining plate to the joining plate through the steel rod inside the steel pipe column, and can be smoothly transmitted to another beam.

[0010]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a cross-sectional plan view showing one embodiment of a joint structure of a steel pipe column and a beam of the present invention, FIG. 2 is a longitudinal side view of the same, and the same reference numerals are given to the same constituent elements as in FIG. 13 showing the conventional example. are doing.

First, the joint metal used in the joint structure of the steel pipe column and the beam of the present invention will be described. As shown in FIG.
It is composed of a joining plate 6 provided with tapped screw holes 11 and a steel rod 7 connecting the joining plates 6 to each other. This tap screw hole 11 is at least the joint surface 8 of the joint plate 6 to the steel pipe column 1.
However, the opening may be made on the opposite surface so as to penetrate the joint plate 6.

The joint plate 6 has a substantially U-shaped hook 9 integrally and horizontally projected on the surface opposite to the joint surface 8 to the steel pipe column 1.
By this hook 9, a vertical engaging hole 10 that opens in the vertical direction is formed in the joining plate 6. In this embodiment, the inside of the hook 9 is formed in an arc shape, and an arcuate recess 14 is vertically provided on the surface of the joining plate 6 corresponding to the hook 9.

On the other hand, the steel rod member 7 is made of a reinforcing bar or a steel rod, and has a U-shaped hook shape in which the end is bent at a right angle to form the fixing portion 7a.

Next, the joint structure of the steel pipe column and the beam of the present invention will be described. As shown in FIGS.
By abutting the joint surface 8 on the inner surface of the steel pipe column 1, the steel pipe column 1
Is disposed inside. The joining plates 6 arranged on the inner surfaces of the steel pipe columns 1 facing each other have the steel rods 7 in the engagement holes 10.
The fixing portions 7a are inserted from above and penetrated, and the steel rods 7 are connected to each other. The fixing portion 7 of the steel bar 7
As shown in FIG. 4, the length between a and the distance between the joining plates 6 is set to match the distance between the engaging holes 10 so that the fixing portion 7a does not cause play in the engaging holes 10 as much as possible. Is desirable. Further, as shown in the drawing, the joining plates 6 are connected to each other by two or more steel rods 7.

An external joint metal 3 which is a T-shaped joint metal attached to the upper and lower flanges 2a of the beam 2 by welding or bolting is brought into contact with the outer peripheral surface of the steel pipe column 1, and the external joint metal 3 and the joint plate 6 are joined together. While tightening the steel pipe pillar 1 with and, tightening with the high-strength bolt 5 as a tap screw is performed. In this case, the high-strength bolt 5 penetrates the mounting hole 12 provided in the steel pipe column 1 and is inserted into the tap screw hole 11 of the joint 7.

Then, the concrete 13 is filled in the steel pipe pillar 1. By doing so, the joining plates 6 for fixing the beams 2 joined with the steel tube columns 1 in between are connected straight or obliquely by the steel rods 7, but in the direction orthogonal to the steel rods 7. The intersection of can be shifted up and down by changing the position of the hook 9 of the joining plate 6.

5 to 8 show a modified example of the joining plate 6, FIG. 5 shows a hook 9 having a complete U-shape, and FIG. 6 shows that the hook 9 is made smaller and as a result, the engaging hole 10 is made smaller. FIG. 7 shows an H-shaped hook 9 with the engaging holes 10 opened left and right, and FIG. 8 shows a split type composed of a plurality of joining plates 6. Any of them may have any shape as long as it has a joining portion having tapped screw holes 11 and a portion to which the steel rod 7 is hooked. Also, steel bar 7
May be formed as a ring.

[0018]

As described above, the joining structure of the steel pipe column and the beam of the present invention and the joining metal piece used for the same can be applied to the steel pipe column even if the steel pipe column receives an external force such as an out-of-plane bending stress through the beam. Deformation can be reliably prevented, moreover, changes in the steel pipe columns can be coped with, and the force can be smoothly transmitted from the beam to the beam.

[Brief description of drawings]

FIG. 1 is a cross-sectional plan view showing an embodiment of a joint structure of a steel pipe column and a beam of the present invention.

FIG. 2 is a vertical cross-sectional side view showing an embodiment of a joint structure of a steel pipe column and a beam of the present invention.

FIG. 3 is a perspective view showing one embodiment of a metal joint used in the steel pipe column-beam joint structure of the present invention.

FIG. 4 is a plan view showing one embodiment of a metal joint used in the steel pipe column-beam joint structure of the present invention.

FIG. 5 is a perspective view showing a second modified example of the joint plate of the joint metal used in the joint structure of the steel pipe column and the beam of the present invention.

FIG. 6 is a perspective view showing a third modified example of the joint plate of the joint metal used in the joint structure of the steel pipe column and the beam of the present invention.

FIG. 7 is a perspective view showing a fourth modified example of the joint plate of the joint metal used in the joint structure of the steel pipe column and the beam of the present invention.

FIG. 8 is a perspective view showing a fifth modified example of the joint plate of the joint metal used in the joint structure of the steel pipe column and the beam of the present invention.

FIG. 9 is a cross-sectional plan view of a steel pipe column / beam connection portion showing a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Steel pipe column 2 ... Beam 2a ... Flange 3 ... External joining hardware 4 ... Internal joining hardware 5 ... High-strength bolt 6 ... Joining plate 7 ... Steel rod 7a ... Fixing part 8 ... Joining surface 9 ... Hook 10 ... Engagement Dowel 11 ... Tap screw hole 12 ... Mounting hole 13 ... Concrete 14 ... Recess

Claims (2)

(57) [Claims] 1. A surface of a steel pipe column on which a mounting hole is provided on a side of a joint portion, a tap screw hole which is opened on a joint surface side with a steel pipe column, and which is opposite to a joint surface to the steel pipe column. A joining plate formed by projecting a hook having an engaging hole that opens in the up-down direction is used, and the joining plate is placed inside the steel pipe column by joining the joining surface side to the inner surface of the steel pipe column. The external joint metal provided in the section and this joint plate are fastened and fixed by high-strength bolts through the mounting holes and tap screw holes, and the joint plates of the inner surfaces facing each other of the steel pipe column are fitted in the engaging holes. A joint structure of steel pipe columns and beams, characterized in that the ends are connected by hooked steel rods and the steel pipe columns are filled with concrete. 2. The joint surface side with the steel pipe column is opened on the joint surface side with the steel pipe column at least without tap screw holes for fastening with the external joint metal fitting provided at the beam end with the steel pipe column interposed therebetween. And a hook having an engaging hole opening in the up-down direction on the surface opposite to the joining surface to the steel pipe column, and the joining plate is a steel pipe column and a beam. A steel rod in the shape of a hook, which is composed of a plurality of joining plates arranged as a pair on the inner surface of the steel pipe column facing each other for joining, and the end portions of which are inserted into the engaging holes to connect the joining plates as a pair. A joint metal used for a joint structure of a steel pipe column and a beam, characterized by combining materials into a joint plate.