JPH06240746A - Structure of column/beam connection part - Google Patents

Abstract

PURPOSE:To provide sufficient strength by installing beams in which channel- shaped steel structures are oppositely arranged at an interval, between steel pipe columns or steel pipe concrete columns. CONSTITUTION:A column 3 is formed by placing concrete 2 inside a square steel pipe 1, and two channel-shaped steel structures 5 are symmetrically arranged between the columns 3 while keeping a prescribed distance. Between the channel-shaped steel structures 5, concrete 2 is placed to form a steel structure concrete beam 4 of a square section, and the beams 4 are installed by welding them to the circumferential side surfaces of the column 3 at a prescribed height. Thus, the stresses of the beam flange are smoothly transmitted to the column on the opposite side of the connection part via the inside diaphragm of the beam connection part, and the swelling of the column flange can be prevented.

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 column and a beam by combining a steel pipe column or a steel pipe concrete column with a beam member.

[0002]

2. Description of the Related Art The combination of steel pipes or steel pipe concrete columns and beam H-shaped steel has become common in the present design.

[0003]

The combination of the steel pipe or the steel pipe concrete column has the following problems.

(1) In order to transmit the stress of the beam flange, it is necessary to reinforce the inner or outer diaphragm at the joint.

(2) In order to transmit the force of the beam web to the steel pipe, it is necessary to sufficiently consider the entrainment of the steel pipe.

(3) Beam When H-shaped steel is used, the beam has a low rigidity and is not suitable for housing.

(4) Concrete reinforcement is difficult when the reinforcement of the joint is inside the column.

The present invention was developed to solve the above problems, and an object thereof is to provide a column-beam joint structure having sufficient strength and good workability.

[0009]

In order to achieve the above object, according to the present invention, between steel pipes or steel pipe concrete columns,
[Characteristics are characterized in that a beam is provided so as to be opposed to each other with the steel frames being spaced apart from each other.

[0010]

Embodiments will be described below based on the illustrated embodiments. 1 and 2 show an embodiment of a steel pipe concrete column and a steel-framed concrete beam. Reference numeral 1 denotes a square steel pipe in which concrete 2 is placed in the square steel pipe to form a column 3. 4 is pillar 3
Beams installed on the
This is a steel-framed concrete beam having a square cross section, which is made by placing concrete 2 between the steel frames 5 and 5 to form a concrete beam. It is erected by welding on the peripheral side of the required height.

FIGS. 3 and 4 show a second embodiment of a steel pipe concrete column and a steel beam. The column 3 has an inner diaphragm 6 horizontally fixed to the beam joint portion inside the square steel pipe 1, and a square-shaped concrete placing hole 6a is provided at the center of the inner diaphragm 6. It is made by placing concrete inside.
The beam 4 is one in which [two type steel frames 5 are arranged so as to face each other at the left and right with a required space therebetween, and bridged between the columns 3.

In addition to the pillar 3 and the beam 4 shown in the first and second embodiments described above, in the present invention, a pillar 3 having a cross-sectional shape shown in FIGS. Use beam 4.

A column 3 shown in FIG. 5 (A) is a pure steel column made of a square steel tube 1. The column 3 shown in FIG. 5 (B) is a reinforced concrete steel pipe concrete column in which four core reinforcements 7 are arranged in the central portion of the square steel pipe 1 and concrete 2 is placed inside the square steel pipe 1. is there.

The beam 4 shown in FIG. 6 (A) has left, right and top,
Four angles 8 are arranged below the required distance, the angles 8 are used as corners, and the space between the angles 8 and 8 is a lattice 9
It is a steel-framed lattice beam in which two sections, which are vertically opposed to each other and have a required interval left and right, are formed to form a die section, and the angles 8 and 8 are connected by a connecting material 10. The beam 4 shown in FIG. 6 (B) has two [type steel frames 5, which are arranged so as to face each other on the left and right with a required space therebetween, and [two beams each of the upper and lower sides are provided between the type steel frames 5 and 5]. This is a steel-framed reinforced concrete beam in which main bars 11 are arranged and concrete 2 is cast.

Each of the beams 4 has a structure shown in FIG.
A stiffener 12 may be provided inside, or a connecting member 13 may be provided across the upper and lower flanges 5a, 5a of the steel frame 5, 5 as required.

8 and 9 show examples of application of the present invention to a tube frame. FIG. 8 is a plan view showing an example of the arrangement of the columns 3 and the beams 4, which are arranged in a rectangular shape. Beam 4
The joint position is at the center of the span, and is joined by the high tension bolt 14 as shown in FIG.

FIG. 10 shows an example of the skeleton constructed according to the present invention. The pillar 3 is made of steel pipe or steel pipe concrete, and the beam 4 is made of steel frame, steel frame concrete or steel frame reinforced concrete.

[0018]

Since the present invention is constructed as described above, it has the following effects.

(1) The stress of the beam flange smoothly flows to the beam on the opposite side of the joint via the inner diaphragm of the column-beam joint.

(2) The stress of the beam web flows directly to the column web. Therefore, unlike the case of the H-shaped beam, the flaring of the column flange does not occur. Therefore, the beam web is effectively used.

(3) When rigidity is required in a house or the like, concrete pouring is possible. In this case, [type steel frame is replaced by the formwork.

(4) When used for a short-span beam such as a tube frame, there are two beam webs, which facilitates cross-section design such as step design and beam-beam joint.

(5) When a wall is provided, concrete can be poured easily from the upper part of the beam (Fig. 11).

[Brief description of drawings]

FIG. 1 is a partial cross-sectional plan view showing a joint portion of a first embodiment of a steel pipe concrete column and a steel frame concrete beam.

2A and 2B show a joint portion of a first embodiment of a steel tube concrete column and a steel-framed concrete beam, FIG. 2A is a front view, and FIG. 2B is a longitudinal sectional view of a steel-framed concrete beam.

FIG. 3 is a partial cross-sectional plan view showing a joint portion of a second embodiment of a steel pipe concrete column and a steel beam.

FIG. 4 shows a joint portion of a second embodiment of a steel pipe concrete beam, (A) is a front view and (B) is a longitudinal sectional view of a steel beam.

FIG. 5 shows columns to be adopted according to design requirements, and (A) is a cross-sectional view of a pure steel frame column made of square steel pipe,
(B) is a transverse cross-sectional view of a cored concrete column in which core bars are arranged in square steel and concrete is placed therein.

FIG. 6 shows a beam to be adopted according to the design need, and (A) is a longitudinal cross-sectional view of a steel-framed lattice beam in which angles are arranged at the corners and the angles are connected by lattices.
(B) is a vertical cross-sectional view of a steel-framed concrete beam in which concrete reinforcement is laid between beam-shaped steel frames and concrete is cast.

FIG. 7 is a vertical cross-sectional view of a steel beam having a stiffener and a connecting member arranged between the model steel frames.

FIG. 8 is a plan view showing an application example to a tube frame.

FIG. 9 shows an example of application to a tube frame,
(A) is a partial cross-sectional plan view, and (B) is a front view.

FIG. 10 is a sectional view showing an example constructed according to the present invention.

FIG. 11 is a vertical cross-sectional view showing the state of concrete pouring when a wall is provided at the bottom of the beam.

[Explanation of symbols]

1 ... Square steel pipe, 2 ... Concrete, 3 ... Pillar, 4 ... Beam, 5
… [Type steel frame, 6… Inner diaphragm, 7… Core bar, 8… Angle, 9… Lattice, 10… Connecting material, 11… Beam main bar,
12 ... Stiffener, 13 ... Connecting material, 14 ... High tension bolt.

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[Procedure amendment]

[Submission date] July 15, 1993

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 2

[Correction method] Change

[Correction content]

[Fig. 2]

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 4

[Correction method] Change

[Correction content]

[Figure 4]

Claims (1)

[Claims] 1. A steel pipe or a steel pipe between concrete columns,
[Joint structure of a pillar and a beam, characterized in that a beam is provided so as to be opposed to each other with the steel frames being spaced apart from each other.