JPH0517997A - Column and beam frame employing src column - Google Patents

Abstract

PURPOSE:To provide a column and beam frame executed for a high or superhigh SRC built building, particularly column and beam frame employing a SRC column having a high axial yield strength. CONSTITUTION:A column 1 is the steel frame reinforced concrete column (SRC column) having a core material of a ready-made concrete pile 4 coiled by a steel pipe and a reinforcement disposed and concrete 1c placed around the outer periphery of the core and concrete placed. A steel beam 2 is joined with an outer diameter ring 3 provided on the outer periphery of a steel pipe in a joint part of the SRC column 1. Thus, the SRC column 1 displays a high axial yield strength equivalent to or more than that of a conventional RC column having a steel frame core and has large rigidity and excellent dynamic performance. Also, since a beam member is mounted previously with high accuracy, workability is improved suitably for an industrialized building method. Further, the steel beam 2 is joined with the outer diameter ring 3 mounted on the outer periphery of the steel pipe in the SC pile 4 of SRC column 1 in on the spot or the like to be assembled, so that the manhours for working the steel frame are lessened and a high or superhigh SRC building can be economically built.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pillar-beam frame structure for a high-rise or ultra-high-rise steel-framed reinforced concrete structure (hereinafter sometimes abbreviated as SRC structure), and more specifically, it has high axial proof strength. Steel-framed reinforced concrete columns (hereinafter SR
The present invention relates to a pillar-beam frame structure adopting C pillar).

[0002]

2. Description of the Related Art In recent years, with the progress of high-rise and super-high-rise buildings, columns with high axial strength have been required, and conventional reinforced concrete columns using general high-strength concrete (hereinafter referred to as RC columns) It may be abbreviated)) and it became a situation that cannot be dealt with in strength. Therefore, RC columns using H-section steel or steel pipe as the core material (for example, Japanese Patent Publication No. 3-267).
The RC column with the core steel frame shown in FIGS. 2A and 2B of Japanese Patent No. 466) is widely adopted.

[0003]

[Problems to be Solved by the Invention] Japanese Patent Publication No. 3-26
RC cored columns with core steel frames disclosed in FIGS. 2A and 2B of Japanese Patent No. 746 are originally adopted for RC buildings, and cannot be applied to high-rise or super-high-rise SRC buildings. Further, the conventional RC column with a core steel frame has a structure in which the axial force applied is shared between the reinforced concrete and the core steel frame. Therefore, in order to increase the axial proof strength of the column, a large steel frame cross section is inevitably required, and a high-grade and thick-walled steel frame of, for example, SM50 to 53 is used, which is disadvantageous in that it is expensive.

Therefore, an object of the present invention is that it can be applied to high-rise or super-high-rise buildings, exhibits a high axial proof strength equal to or higher than the conventional RC column with core steel frame, and is inexpensive S
The purpose of the present invention is to provide a beam-column structure using RC columns.

[0005]

As a means for solving the above-mentioned problems of the prior art, a column-beam structure adopting an SRC column according to the present invention has a high-rise structure or an ultra-high-rise structure as shown in the embodiments in the drawings. In a beam-column structure of a steel-framed reinforced concrete building, a pillar 1 is made of steel pipe-wound ready-made concrete pile 4 as a core material, and a reinforcing bar 1b is arranged on the outer circumference of the pillar 1 to provide a peripheral concrete 1
Steel-framed reinforced concrete columns (SRC columns) where c is placed
The beam steel frame 2 is joined to the outer diamond ring 3 provided on the outer circumference of the steel pipe of the joint portion of the SRC column 1.

In the column-beam structure of the present invention, the beam steel frame 2 is S
It is characterized in that it is joined to the outer diamond ring 3 before placing the outer peripheral concrete 1c of the RC column 1 and that the filled concrete 5 is also placed in the hollow portion of the steel pipe wound ready-made concrete pile 4.

[0007]

The inner concrete 4b of a commercially available factory-made steel pipe-wound ready-made concrete pile 4 (hereinafter sometimes abbreviated as SC pile), which is the core material of the SRC pillar 1, is centrifugally molded, so Quality compared to poured concrete,
Since it is excellent in strength and has high compression yield strength, it greatly contributes to the enhancement of the axial yield strength of the SRC column 1. Further, since prestress is introduced into the inner surface concrete 4b, it is strong against pulling and thus imparts excellent mechanical performance to the SRC column 1. On the other hand, since the steel pipe 4a of the SC pile is generally a low grade and thin general steel pipe of SS41 level, the steel material is reduced and the cost is low, but the combined effect with the inner concrete 4b makes it possible to use the conventional core. Demonstrates axial yield strength equal to or higher than steel frame. Comprehensively, the SC pile 4 has higher rigidity than the conventional core steel frame and has less erection error, so that a highly accurate column-beam frame can be constructed with good workability.

The outer diamond ring 3 can be attached to the outer periphery of the steel pipe 4a of the SC pile 4 at each position of the joint portion, for example, as work at a site on site, which eliminates the need for factory machining. Therefore, there are no process restrictions due to the steel frame factory processing schedule, and the economy can be improved and the construction period can be shortened.

[0009]

EXAMPLE An example of the present invention shown in the drawings will be described below.
FIG. 1 and FIG. 2 show an embodiment of a beam-column structure adopting an SRC column according to the present invention for main parts. 1 in the figure is SR
C pillar, 2 is a beam steel frame. As shown in FIGS. 3 and 4, the structural details of the SRC column 1 are steel pipe windings having a relatively small diameter (outer diameter of about 40 cm) compared to the cross-sectional dimension of the column 1 (one side is about 1 m). A ready-made concrete column (SC pile) 4 is used as a core material, and a reinforcing bar (column reinforcing bar) 1b composed of main reinforcing bars and hoop reinforcing bars is arranged on the outer periphery of the core material, and the peripheral concrete 1c is placed so that the reinforcing bar 1b has a sufficient concrete cover. It is constructed as a steel-framed reinforced concrete pillar. SC pile 4 has
The one with the corresponding diameter is selected and used from the factory manufactured and generally marketed. As is well known, in the SC pile 4, an inner concrete 4b is centrifugally formed with an appropriate thickness on the inner surface of a steel pipe 4a. As the SRC pillar 1, the above S
Filled concrete 5 is also placed in the hollow part of C pile 4,
Therefore, the reduction of the axial yield strength due to the cross-section loss is prevented.

In the case of the illustrated embodiment, the beam is a precast reinforced concrete beam (precast SRC beam) obtained by precasting the beam steel frame 2 with reinforced concrete. However, it is also possible to carry out by using the beam steel frame 2 alone or by using a precast SC beam in which the reinforced concrete 6 is precast on the beam steel frame 2. When a precast SRC beam is used, the main beam beam can pass through the outer periphery of the SC pile 4 to be continuously arranged. The beam steel frame 2 is joined by butt welding to the outer diamond ring 3 provided on the outer circumference of the steel pipe of the joint portion of the SRC column 1. As the working process, first, at a site or the like, a pair of upper and lower outer diamond rings 3 and 3 are attached by welding to the joint portion on the outer periphery of the steel pipe 4a of the SC pile 4, and the gusset plate 7 is also attached. Then, immediately after constructing this SC pile 4 at the position of the pillar, that is, SR
Before the outer peripheral concrete 1c of the C pillar 1 is cast, the end portions of the beam steel frame 2 are temporarily fixed to the gusset plate 7 with bolts, and then the upper and lower flange portions of the beam steel frame 2 are correspondingly corresponding to the upper and lower outer diaphragms. Joining is performed by butt welding with Nos. 3 and 3. After that, the reinforcing bars 1b are laid on the outer periphery of the SRC columns 1 and the outer peripheral concrete 1c is placed to complete the column-beam structure.

[0011]

[Advantageous effects of the present invention] In the beam-column structure employing the SRC column according to the present invention, the SRC column 1 exhibits a high axial proof strength equal to or higher than that of the conventional RC column with a core steel frame, and has a high rigidity. Excellent mechanical performance. Further, since the beam member is attached with high accuracy in advance, the workability is good and it is suitable for the industrialized construction method.

Further, the column-beam frame structure according to the present invention comprises a beam steel frame 2
Is assembled by being joined to the outer diamond ring 3 attached to the outer periphery of the steel pipe 4a in the SC pile 4 of the SRC pillar 1 at a site on site, etc., so the number of man-hours for steel frame processing is small, and construction of a high-rise or super-high-rise SRC building is performed. Is economically feasible.

[Brief description of drawings]

FIG. 1 is an elevation view of a main part of a beam-column structure according to the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a plan view of FIG.

FIG. 4 is a vertical cross-sectional view showing an enlarged main part of a beam-column structure.

[Explanation of symbols]

1 SRC pillar 2 beam steel frame 3 outside dialing 1c Perimeter concrete 4 SC pile 5 concrete

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yasumasa Miyauchi             2-5-14 Minamisuna, Koto-ku, Tokyo Stock Market             Takenaka Corporation Technical Research Institute (72) Inventor Michihiko Ota             8-21-21 Ginza, Chuo-ku, Tokyo Stock market             Takenaka Corporation Tokyo Main Store (72) Inventor Masamitsu Enoguchi             8-21-21 Ginza, Chuo-ku, Tokyo Stock market             Takenaka Corporation Tokyo Main Store (72) Inventor Masayuki Iwata             8-21-21 Ginza, Chuo-ku, Tokyo Stock market             Takenaka Corporation Tokyo Main Store (72) Inventor Naoki Aso             8-21-21 Ginza, Chuo-ku, Tokyo Stock market             Takenaka Corporation Tokyo Main Store

Claims (2)

[Claims] 1. A pillar-beam structure of a high-rise or ultra-high-rise steel-framed reinforced concrete building, in which the pillar is a steel pipe-wound ready-made concrete pile as a core material, and reinforcing bars are arranged on the outer periphery of the steel-reinforced concrete column According to the present invention, the beam steel frame is joined to an outer dialing provided on the outer circumference of the steel pipe of the joint portion of the column, wherein the column beam frame structure adopts the SRC column. 2. The beam steel frame is joined to the outer dialing before placing the outer peripheral concrete of the column, and the filling concrete is also placed in the hollow portion of the steel pipe wound ready-made concrete pile. SRC according to claim 1,
A column-beam structure that uses columns.