JPH05156710A - Joining construction of column and beam - Google Patents

Abstract

PURPOSE:To enable the execution of a joining section of a column with beams by making a square or circular steel pipe as a column to project a plurality of longitudinal stiffeners to the inside of the joining section of the column with the beams. CONSTITUTION:A square steel pipe is used for a column 6, and steel beams 8, 9, 10 and 11 of wide flange shape steels are joined with the column 6 to form steel framed construction. A plurality of longitudinal stiffeners 22 are projected to the inside of the joining section of the column 6 with the beams 8, 9, 10 and 11, and concrete is placed over the length of the column 6. In addition, surroundings of the column 6 and the beams are coated with reinforced concrete to form steel framed and reinforced concrete construction. Accordingly, joining area with the concrete can be increased by a large number of stiffeners to strengthen joining strength.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel frame structure having a hollow steel pipe or a steel pipe filled with concrete as a column, and a structure of a joint portion between a column and a beam of a steel reinforced concrete structure.

[0002]

2. Description of the Related Art FIGS. 6 to 8 show a conventional method for connecting a steel frame beam to a square steel pipe column, in which 1 is a square steel pipe column and 2 is a steel frame beam.

FIG. 6 shows a pillar 1 with an upper flange 2a of a beam 2,
The diaphragm 3 is divided at a position facing the lower flange 2b, and the diaphragm 3 is passed through each cutting position.
a, 3b are inserted, and these diaphragms 3a, 3b
Is welded to the pillar 1, the diaphragm 3a is welded to the upper flange 2a of the beam 2, and the diaphragm 3b is welded to the lower flange 2b of the beam 2.

FIG. 7 shows an intermediate portion 1a of a joint between a pillar 1 and a beam 2.
The inner diaphragm 4a is inserted at a position corresponding to the upper flange 2a of the beam 2 inside the column 1, and the four circumferences thereof are welded to the column 1 and correspond to the lower flange 2b of the beam 2. At the position, the inner diaphragm 4b is inserted, the four circumferences thereof are welded to the pillar 1, and then the cut portion 1a of the pillar 1 is welded, and then the upper flange 2a of the beam 2 is attached to the outer surface of the pillar 1 corresponding to the inner diaphragm 4a. And the lower flange 2b of the beam 2 are butted and welded to the outer surface of the column 1 corresponding to the inner diaphragm 4b.

In FIG. 8, the pillar 1 is not cut in the middle, and an outer diaphragm 5a having a shape enclosing the pillar 1 is fitted and welded to the pillar 1 at a position facing the upper flange 2a of the beam 2. An outer diaphragm 5b having a shape enclosing the pillar 1 is fitted to the pillar 1 and welded at a position facing the lower flange 2b of the beam 2.

[0006]

As described above, in the conventional construction method shown in FIGS. 6 and 7, the pillar 1 must be divided, and the pillar 1 at the position facing the flanges 2a and 2b of the beam 2 is required. The diaphragms 3a, 3b or 4a, 4b must be welded therein. Further, in the conventional construction method shown in FIG. 8, the outer diaphragms 5a and 5b having a shape enclosing the pillar 1 must be specially formed, and this must be fitted to the pillar 1 and welded. The construction method is complicated and difficult to perform, and all the levels of the beams 2 to be joined to the pillar 1 must be the same. Furthermore, when concrete is placed in the pillar 1, the diaphragm 3
There is a problem that a, 3b or 4a, 4b interfere.

[0007]

SUMMARY OF THE INVENTION In order to solve the above problems, in the present invention, a square or circular steel pipe is used as a pillar, and a beam is joined to this pillar. In, a plurality of vertical stiffeners are provided inside the joint between the pillar and the beam.

Further, in the present invention, concrete is placed inside the above-mentioned pillar to form a joint portion between the pillar and the beam.

Further, according to the present invention, a square or circular steel pipe is used as a pillar, a beam is joined to the pillar, and the pillar and the beam are covered with a reinforced concrete structure. At the junction of
A plurality of vertical stiffeners are projected inside the joint between the column and the beam, and concrete is cast inside the column.

[0010]

As described above, according to the present invention, it is not necessary to cut the column at the joint with the beam, and the inner diaphragm to be inserted into the column and the outer diaphragm to enclose the column are also unnecessary. Further, since it is not necessary to match the levels of the beam flanges joined to the columns, it is possible to freely select the joining position of the beams. Furthermore, it becomes easy to place concrete in the columns, and since many vertical stiffeners increase the joint area with the concrete, the joint strength between the columns and the concrete also increases.

[0011]

Embodiments of the present invention will be described below with reference to FIGS. In the figure, 6 is a square steel pipe column, 7 is a circular steel pipe column,
Reference numerals 8, 9, 10, 11 denote H-shaped steel beams joined to the square steel pipe columns 6, and 12, 13, 14 denote H beams joined to the round steel pipe columns 7.
It is a shaped steel beam. These beams may be steel-framed structures, steel-framed concrete structures, steel-framed reinforced concrete structures, or reinforced concrete structures having brackets at the ends. Further, 15 in FIG. 5 is a steel beam connected to the steel column 6 made of steel reinforced concrete, 16 is a main bar for the column, 17 is a hoop bar surrounding the main bar 16, 18 is a bar bar, and 19 is concrete. Rear pillars, 20 and 21 are beams after concrete is placed.

FIGS. 1 (a) and 1 (b) show a first embodiment of the present invention in which a square steel pipe is used as a pillar 6 and the pillar 6 is used.
In the joint portion of the steel-framed column and the beam formed by joining the steel beams 8, 9, 10, and 11 to the inner side of the joint portion of the pillar 6 with the beams 8, 9, 10, and 11 (the present embodiment, (16 sheets), the vertical stiffeners 22 are projected.

FIGS. 2 (a) and 2 (b) show a second embodiment of the present invention, in which a circular steel pipe is used as a pillar 7 and the pillar 7 is used.
In the joint portion of the steel-framed column and the beam formed by joining the steel beams 12, 13, and 14 to each other, a plurality of sheets (16 sheets in this embodiment) inside the joint portion of the column 7 with the beams 12, 13, and 14 The vertical stiffener of this is projected.

FIGS. 3 (a) and 3 (b) show a third embodiment of the present invention, in which the concrete 24 is provided inside the pillar 6 of the first embodiment shown in FIG. Was placed.

FIGS. 4 (a) and 4 (b) show a fourth embodiment of the present invention, which is the concrete 24 over the entire length of the pillar 7 inside the pillar 7 of the second embodiment shown in FIG. Was placed.

5 (a) and 5 (b) show a fifth embodiment of the present invention in which a square steel pipe is used as a pillar 6 and the pillar 6 is used.
At the joint between the pillar 6 and the beam, the joint between the pillar 6 and the beam 15 is made of a steel-framed reinforced concrete structure in which the periphery of the pillar 6 and the beam 15 is covered with reinforced concrete. A plurality of sheets (8 in this embodiment)
The vertical stiffeners 25 are provided so that the concrete 24 is placed inside the pillars 6.

[0017]

As described above, according to the present invention,
It is not necessary to cut the column at the joint with the beam, and the inner diaphragm to be inserted into the column and the outer diaphragm to enclose the column are also unnecessary. Further, since it is not necessary to match the levels of the beam flanges joined to the columns, it is possible to freely select the joining position of the beams. Furthermore, it is easy to place concrete in the pillar, and since the joint area with the concrete is increased due to many vertical stiffeners, the joint strength between the pillar and the concrete is also increased. The excellent effect of is obtained.

[Brief description of drawings]

1A is a plan view showing a first embodiment of the present invention, and FIG. 1B is a vertical sectional view thereof.

FIG. 2 (a) is a plan view showing a second embodiment of the present invention, and FIG. 2 (b) is a vertical sectional view thereof.

3A is a plan view showing a third embodiment of the present invention, and FIG. 3B is a vertical sectional view thereof.

FIG. 4A is a plan view showing a fourth embodiment of the present invention, and FIG. 4B is a vertical sectional view thereof.

5A is a plan view showing a fifth embodiment of the present invention, and FIG. 5B is a vertical sectional view thereof.

FIG. 6A is a perspective view showing an example of a conventional device, and FIG. 6B is a vertical sectional view thereof.

FIG. 7A is a perspective view showing another example of a conventional device, and FIG. 7B is a vertical sectional view thereof.

FIG. 8A is a perspective view showing another example of a conventional device, and FIG. 8B is a vertical sectional view thereof.

[Explanation of symbols]

 1 Rectangular Steel Tubular Column 2 Steel Beam 3a, 3b Through Diaphragm 4a, 4b Inner Diaphragm 5a, 5b Outer Diaphragm 6 Rectangular Steel Tubular Column (Column) 7 Circular Steel Tubular Column (Column) 8-14 Beam 15 Steel Beam 16 Main Bar 17 Hoop Reinforcing Bar 18 Reinforcing Bar 19 Pillars after concrete placing 20,21 Beams after concrete placing 22,23 Vertical stiffener 24 Concrete 25 Vertical stiffener

Claims (3)

[Claims] 1. A steel-framed column-to-beam joining portion in which a square or circular steel pipe is used as a column, and a beam is joined to the column,
A joint structure of a pillar and a beam, characterized in that a plurality of vertical stiffeners are provided inside the joint of the pillar and the beam. 2. A column-beam joining structure, wherein concrete is placed inside the column according to claim 1. 3. A joint between a column and a beam of a steel reinforced concrete structure in which a rectangular or circular steel pipe is used as a column, a beam is joined to this column, and the column and the periphery of the beam are covered with reinforced concrete. , A joint structure of a pillar and a beam, characterized in that a plurality of vertical stiffeners are projected inside the joint of the pillar and the beam, and concrete is placed inside the pillar.