JP2677153B2 - Column / beam joint structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a column composed of a steel frame column and a steel beam having a closed cross-section, the interior of which is filled with concrete.
The present invention relates to a beam joint structure.

[0002]

2. Description of the Related Art At a joint between a steel frame column and a steel beam having a closed cross-sectional shape such as a rectangular steel pipe or a circular steel pipe, a stress is transmitted and a rigidity of a flange of the steel frame against the stress is ensured at the joint. A diaphragm is placed at the level of the steel beam flange.

[0003] Mainly, the through-diaphragm method of joining to the end faces of the steel-columns cut at the upper and lower flange positions of the steel beam, the inner diaphragm method of inserting inside the steel-frame columns, and the outer diaphragm projecting on the outer periphery are arranged. Although there is a method, most of the work required to configure the joint depends on welding, and since there are many cuttings and processing, assembly requires labor and high accuracy, so it is not suitable for assembly work in factories. There are difficulties. In particular, the inner diaphragm method has a problem in that it cannot be touched after the steel frame column is assembled, and the outer diaphragm method has problems such as poor compatibility with the finish.

In addition, instead of the diaphragm, there is a system in which long bolts are passed between the opposing flanges of the steel column and between the adjacent flanges to perform the function of the diaphragm. Since it is completed with the axial force applied to the long bolt, the flange of the steel column with poor rigidity may be deformed as the axial force is introduced.To prevent deformation, the final nut tightening work must be performed. Since it has to wait until the concrete hardens, the progress of construction will be affected.

The present invention has been made in view of the actual situation of the above-mentioned conventional structure, and it is an object of the present invention to newly propose a structure which does not require cutting of a steel frame column and has good assembling workability.

[0006]

According to the present invention, 1 are arranged in a steel frame column so as to be orthogonal to each other and face each other across the steel column.
The number of processing for steel columns by connecting the steel beams to the steel columns using the plate-shaped joints that connect the steel beams in the same direction to each other and transmitting the tensile force between the steel beams and the compressive force to the concrete by the joints. And reduce the amount of welding and improve assembly workability.

[0007] The joint metal is composed of a flat plate portion on both sides which overlaps the flanges of the steel beam and is bolted to this, and a connecting portion which connects both flat plate portions in the steel frame column. The joint portion of the joint metal article straddles the joint portion of the other joint metal article, and the flat plate portions of the joint metal article in two directions are located at the same level, and orthogonal steel frame beams are joined to the steel column at the same level.

Since the metal joint is plate-shaped, it is arranged by penetrating the slits formed in the flanges of the steel column facing each other. Since the slit only needs to have a length corresponding to the width of the jointed metal article so that the jointed metal article can be inserted therein, the flange need only be slightly processed, and it is not necessary to cut the steel column to arrange the jointed metal article.

In the joint metal, the tensile force between the steel beams is connected to the other side by the connecting portion, and the connecting portion is embedded in the concrete inside the steel column so that the compressive force from the steel beam is applied by the adhesive force around the connecting portion. Transfer to concrete inside.

When a part of the flat plate portion is located inside the steel frame column as described in claim 2, the shearing force acting between the opposing steel frame beams acting on the joint is connected to each steel frame beam, and a longitudinal section is obtained. Up,
It is possible to transmit to the concrete by supporting pressure from the upper and lower flat plate portions diagonally opposed to each other.

Since the metal joint is arranged in the steel column through the slit, the number of processings for the steel column is reduced due to the arrangement of the metal joint, and the metal joint transmits the stress between the steel beams and the steel frame. Since the stress is transmitted between the beam and the column, the number of processings and the welding amount for the steel column required for stiffening the steel column are reduced or unnecessary, and the workability of assembling the joint is improved.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2, the present invention comprises a steel column 2 having a closed cross-section, such as a rectangular steel pipe or a circular steel pipe having a concrete 1 filled therein, and a steel beam 3 having an H-shaped cross section. Two
Are joined together using plate-shaped joining hardware 4, 4 arranged orthogonal to each other, and the stress from the steel beam 3 is transmitted by the joining metal 4 to the steel beam 3 on the other side and the concrete 1 in the steel column 2. To do.

The joint hardware 4 is a flange of the steel beam 3 on both sides.
Flat plate parts 41, 41 that overlap 31 and are joined to them with bolts 5
And the flat plate portions 41, 41 are connected to each other inside the steel frame column 2 and are arranged orthogonally to each other inside the steel frame column 2.
The flat plate portion 41 has a width corresponding to the width of the flange 31 of the steel beam 3, and the flat plate portion 41 has a plurality of bolt holes for bolt connection.
42 is open.

A connecting portion of either one of the metal fittings 4 and 4 orthogonal to each other at the level of each flange 31 of the steel frame beam 3.
43 is bent as shown in FIG. 2 or the centroid of the connecting portion 43 is eccentric with respect to the flat plate portion 41 as shown in FIG. 5, thereby straddling the connecting portion 43 of the other joining hardware 4, The flat plate portions 41, 41 of the bidirectional joining hardware 4, 4 are joined to the flanges 31, 31 of the steel beam 3, 3 at the same level.

As shown in FIGS. 3 and 6, each of the metal joints 4 penetrates through the flanges 21, 21 facing each other from the slit 22 formed in the flange 21 of the steel column 2 and having the length allowing the flat plate portion 41 to be inserted therethrough. Then, it is installed while being supported by the flange 21 and partially welded to the flange 21 so that it is held until the concrete 1 is filled.

FIG. 3 shows a case in which the slit 22 is opened horizontally and the joining metal piece 4 is inserted in one direction and installed as it is. FIG. 6 shows a case in which the slit 22 is opened vertically and the joining metal piece 4 is installed by inserting and rotating. This is an example. In this case, as shown in FIG. 7, one of the joining metal pieces 4 and 4 arranged in parallel in one direction is rotated and installed, and then the other joining metal piece 4 is inserted.

In the case of the embodiment shown in FIG. 3 in which the connecting portion 43 is bent, the slit 22 on the side into which the joining metal piece 4 is inserted is opened in consideration of the height of the connecting piece 43, and each slit 22 is formed in the joining metal piece 4. After the installation, as shown in FIG. 2, the concrete 1 is closed by a closing plate 6 which prevents the concrete 1 from flowing out. Similarly, in the case of the embodiment shown in FIG. 6, the slit 22 is closed by the reinforcing plate 8 as shown in FIG.

The steel beam 3 is installed with the upper and lower flanges 31, 31 being sandwiched between the flat plate portions 41, 41 of the upper and lower joint metal parts 4, 4 and joined to the flat plate portions 41, 41 with bolts 5. web
Reference numeral 32 is joined to a gusset plate 7 that projects from the flange 21 of the steel column 2 and that transmits a shearing force to the steel column 2.

In the embodiment shown in FIGS. 1 and 2, the connecting portion 43 of the flat plate portion 41 is used.
Although the case where a part of the side is located inside the steel column 2 is shown, in this embodiment, since the flat plate portion 41 is embedded in the concrete 1, the upper flange 31 of one steel beam 3 is
Plate portion 41 connected to and the lower flange of the other steel frame beam 3
The flat plate portions 41 connected to 31 form a pair, and the shearing force between the opposing steel frame beams 3 and 3, which acts on the joint portion when a horizontal force is applied, is transmitted to the concrete 1 as a bearing pressure from the portion located inside the steel frame column 2. To do. The tensile force from one steel beam 3 is applied to the connecting portion 43.
After that, the compressive force is transmitted to the concrete beam 1 in the steel column 2 by the adhesive force around the connecting portion 43 to the steel beam 3 on the other side.

[0020]

EFFECTS OF THE INVENTION 1 penetrates between flanges of a steel frame column and is arranged orthogonally to each other inside thereof, and faces each other with the steel frame column interposed therebetween.
Connection of steel beams to the steel columns by connecting the steel beams to the steel columns using the joints that connect the steel beams in different directions to each other and transmitting the tensile force between the steel beams and the compressive force to the concrete by the joints. The number of processes and welding required for machining and stiffening due to the above are reduced or unnecessary, and the workability of assembling the joint can be improved.

Further, since the connecting part of one of the connecting parts of the connecting parts which are orthogonal to each other straddles the connecting part of the other connecting part of the connecting parts, the flat parts of the connecting parts of the two directions are located at the same level.
Orthogonal steel beams can be joined to steel columns at the same level.

Further, since the metal joint is plate-shaped, the metal joint can be arranged so as to penetrate through the slits formed in the opposite flanges of the steel column, and the slit can be inserted through the metal joint. Since it only needs to have a length corresponding to the width, the work on the flange is slight, and it is not necessary to cut the steel column to place the metal joint.

According to the second aspect, since a part of the flat plate portion is located inside the steel frame column, it is possible to transmit the shearing force between the opposing steel frame beams acting on the joint portion when the horizontal force is applied to the concrete.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of FIG.

FIG. 3 is a perspective view showing a state in which a metal joint is inserted.

FIG. 4 is a plan view showing another embodiment.

FIG. 5 is a longitudinal sectional view of FIG.

FIG. 6 is a perspective view showing a state of inserting a metal joint.

FIG. 7 is a perspective view showing the next step of FIG.

[Explanation of symbols]

1 ... Concrete, 2 ... Steel column, 21 ... Flange,
22 …… slit, 3 …… steel beam, 31 …… flange, 32…
… Web, 4 …… Joining hardware, 41… Flat plate part, 42… Bolt hole, 43… Connection part, 5… Bolt, 6… Blocking plate, 7
...... Gusset plate, 8 ...... Reinforcement plate.

Claims (2)

(57) [Claims] 1. A steel column and a steel beam having a closed cross-section, which are filled with concrete, are arranged orthogonally to each other inside the steel column, overlap with flanges of the steel beam on both sides, and are bolted to this. It is a joint structure that is joined by using a joint metal piece that consists of a flat plate part and a connecting part that connects both flat plate parts in the steel column, and the joint metal part is plate-shaped and is formed on the opposing flanges of the steel column The connecting portion of one of the joining metal objects arranged so as to penetrate through the slit crosses the connecting portion of the other joining metal object, and the flat plate portions of the joining metal objects in two directions are located at the same level. Pillars characterized by
Beam joint structure. 2. The column-beam joint structure according to claim 1, wherein a part of the flat plate portion is located inside the steel frame column.