JPH06240744A - Structure of column/beam connection part - Google Patents

Abstract

PURPOSE:To enhance the assembling and construction workability of the connection parts of a steel structure column of a closed sectional shape and steel structure beams. CONSTITUTION:A steel structure column 1 of a closed sectional shape and steel structure beams 2 are joined by using through plates 3, 3 which are penetrated between the opposite flanges 11, 11 of the steel structure column 1 so as to form vertical surfaces and which are arranged in parallel to each other in the width direction of the steel structure beams 2, and flange plates 4 which are overlapped on the flanges 21 of the beam 2 and joined thereto by bolts. By previously welding the flange plates 4 to the through plates 3 so that the transmission of stresses between the opposite steel structure beams 2, 2 can be carried out by the through plates 3, the working manhours and welding quantity to the steel structure column 1 can be reduced, and the assembling and construction workability of the connection parts can be enhanced.

Description

Detailed Description of the Invention

[0001]

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

[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 for 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 for inserting inside the steel-column, 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.

As a method of simplifying the structure of the joint without requiring the cutting of the steel column, the applicant proposes a structure of welding a steel beam to a rib plate penetrating the flange of the steel column in Japanese Patent Laid-Open No. 4-143340. However, problems such as weather control are pointed out because the steel beam joints depend on welding at the site.

The present invention has been made in view 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 which does not depend on welding for joining the steel beam.

[0007]

According to the present invention, a flange plate that is bolted to a flange of a steel frame beam is pre-welded to a through plate that penetrates between opposed flanges of a steel frame column in a vertical plane, and the through plate is used. By transmitting the stress between the steel beams facing each other, the number of processing and welding amount for the steel columns are reduced, and the workability of assembling the joints is improved, and at the same time, the steel beams are joined to the steel columns by bolts, and the workability is improved. Increase.

The through plates are arranged side by side in the width direction of the steel beam,
The flange plates are arranged vertically, and the flange plates are welded to the upper surface or the lower surface of the parallel through plates. The tensile force and the compressive force from one steel frame beam facing in one direction pass from the flange plates through the through plates to the other side. Transmitted to the steel beam.

The through plate may be inserted from a hole formed in the flange of the steel column, and it is not necessary to cut the steel column. In addition, since the transmission of stress between the steel beams is performed by the through plate, The number of processes and welding required for processing and stiffening due to the placement of the through plate are reduced or eliminated, and the workability of assembling the joint is improved. In addition, since the steel beams are joined to the steel columns in the field by bolts, the influence of weather and the like is released and the workability is improved.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings showing an embodiment.

In the present invention, as shown in FIGS. 1 and 2, a through plate 3 which penetrates a steel frame column 1 having a closed cross section and a steel beam 2 having an H-shaped cross section between the flanges 11, 11 facing each other of the steel frame column 1.
And the flange plate 4 overlapping the flange 21 of the steel beam 2.
And the stress is transmitted between the steel frame beams 2 and 2 facing each other by the through plate 3. In the embodiment, the column is a steel tube column, but concrete may be filled in the steel frame column 1.

As shown in FIG. 3, the through plate 3 has slits 12 formed in the flanges 11, 11 of the steel column 1 facing each other.
They pass through 12 and are arranged in parallel in the width direction of the steel beam 2 with a vertical plane. The through plate 3 has a length larger than the distance between the flanges 11 and 11, and is fixed to the flange 11 while penetrating the slit 12 and welding the periphery thereof so as to close the gap with the slit 12. Since the through plate 3 faces the vertical direction, the filling property of concrete when the concrete is filled in the steel frame column 1 is secured.

The flange plate 4 is a flange of the steel beam 2.
The through plate 3 has a plurality of bolt holes 41 to be joined to the flange 21, and is welded to the flange 11 and a portion of the through plate 3 protruding outward from the flange 11.

A step is formed between the two through plates 3 and 3 which are orthogonal to each other at the level of the flanges 21 of the steel frame beam 2 as shown in FIG. A distance equal to the thickness of the flange plate 4 is secured between the lower surface and the upper surface of the through plate 3 located on the lower side, and the flange plate 4 in one direction is provided on the lower surface of the upper through plate 3 and the lower through plate 3 The flange plates 4 in the directions orthogonal to the flange plates 4 are welded to the upper surface of the flange plates 4 and 4 in the two directions at the same level, and the steel beams 2 and 2 are orthogonal to each other.
2 is joined to the steel column 1 at the same level.

As shown in FIG. 1, the upper and lower through plates 3 and 3 in any one direction are located outside the steel frame beam 2, and the through plates 3 and 3 in the direction orthogonal thereto are relative to the steel frame beam 2. The flange plates 4 and 4 on the side of the through plates 3 and 3 which are respectively arranged at the inside positions and are located outside the steel beam 2 as shown in FIG. Side flange plates 4, 4
Are welded in such a manner as to sandwich them. From welding the through plate 3 to the flange 11, the flange plate 4
The welding up to the through plate 3 is performed at the factory together with the welding of the gusset plate 5 that transmits the shearing force from the steel beam 2 to the steel column 1 to the flange 11 of the steel column 1.

As shown in FIG. 1, the steel frame beam 2 is installed with the upper and lower flanges 21 and 21 sandwiched between the upper and lower flange plates 4 and 4, and is joined thereto by bolts 6. web
22 is joined to the gusset plate 5 projecting from the flange 11 of the steel column 1.

One steel beam 2 facing each other across the steel column 1.
From the flange plate 4 through the through plate 3 to the steel beam 2 on the other side.
Through plate 3 when the inside is filled with concrete
The compressive force is transmitted to the concrete by the adhesive force of the surroundings.

[0018]

The present invention is as described above, and a flange plate to be bolted to a flange of a steel frame beam is pre-welded to a through plate penetrating between opposed flanges of a steel frame column in a vertical plane. Since the plates transmit stress between the opposite steel beams, the number of processes and welding required for processing and stiffening the placement of the through plate to the steel columns and the amount of welding are reduced or made unnecessary, and the assembly work of the joint is performed. You can improve your sex.

Further, since the steel beam is joined to the flange plate integrated with the through plate by bolts, the influence of weather or the like is avoided and the workability is enhanced.

In addition, by changing the mounting surface of the flange plate to the through plate in a direction orthogonal to each other, the orthogonal steel beam can be joined to the steel column at the same level.

[Brief description of drawings]

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

FIG. 2 is a vertical sectional view of FIG.

FIG. 3 is a perspective view showing a state when a through plate is installed.

FIG. 4 is a perspective view showing a state when a flange plate is installed.

[Explanation of symbols]

1 ... Steel columns, 11 ... Flanges, 12 ... Slits, 2 ...
… Steel beam, 21 …… Flange, 22… Web, 3… Through plate, 4… Flange plate, 41… Bolt hole,
5 ... Gusset plate, 6 ... Bolt.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takayuki Inoue 2-19-1 Tobita-Su, Chofu-shi, Tokyo Kashima Construction Co., Ltd.

Claims (1)

[Claims] 1. A through plate that penetrates a steel frame column and a steel beam having a closed cross-sectional shape in a vertical plane between opposed flanges of the steel frame column, and is arranged side by side in the width direction of the steel frame beam, and the steel beam. It is a joint structure that uses a flange plate that overlaps with the flange of and is bolted to this, and the flange plate is welded in advance to the upper or lower surface of the parallel through plate and the flange of the steel column. Column / beam joint structure with