JPH05272196A - Reinforced concrete column for high axial force - Google Patents

Abstract

PURPOSE:To increase toughness of a column in which burden axial force increases by imbedding a reinforcing body which is obtained by tilling solidification agent in a cylinder in which spiral reinforcing bars are placed closely in the lower section of reinforcing concrete column and in a part where it is likely to break by pressure. CONSTITUTION:First, a pressure support plate made of steel is welded at the lower end of a cylinder in which spiral reinforcing bars are placed closely at an adequate space, and solidification agent 6 such as high strength concrete mortar, cement paste, and plaster is filled in the cylinder to form a reinforcing body 2. Next, the reinforcing body 2 is set and imbedded in the lower section at a corner of a box-shaped cross section column 1 together with the arranged reinforcing bars 1a. In this case, diameter, number, and arrangement of reinforcing body 2 are arbitrarily determined in accordance with the size of box-shaped cross section column 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforced concrete column for high axial force such as a box-shaped cross-section column or a wall column.

[0002]

2. Description of the Related Art Generally, SRC structures are the mainstream for super high-rise buildings, but in recent years, RC structures have been developed that are less swaying due to wind, earthquakes, etc. than SRC structures, and can shorten construction periods and construction costs. It is being advanced.

[0003]

However, such R
In the super high-rise building of C structure, the axial load on the column increases, so the cross section of the column inevitably increases. Therefore, such a large-section column has a drawback that its end portion is easily collapsed at the time of bending and yielding due to a large axial force of compression or tension due to the overturning moment of the building at the time of an earthquake, and its toughness is small. The present invention has been made in view of the above problems, and an object thereof is to provide a reinforced concrete column for high axial force in which the toughness of the reinforced concrete column with an increased axial load is increased.

[0004]

A reinforced concrete column for high axial force according to the present invention for attaining the above-mentioned four or more subjects has a reinforcing body embedded in a reinforced concrete column, and the reinforcing body is a cylinder in which spiral reinforcement is closely contacted. The present invention is characterized in that a solidifying material is filled in the body, and the reinforced concrete column is a box-shaped cross-section column or a wall column.

[0005]

In the reinforced concrete column for high axial force of the present invention, a reinforcing member is embedded in the lower part of the reinforced concrete column and at a place where it is easily crushed, and the reinforcing member has a solidifying material in the cylinder in which the spiral streak is closely contacted. Since it is configured to be filled, it is possible to enhance the toughness of the lower portion of the reinforced concrete column and the portion easily crushed.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 shows a cross-sectional view of a box-shaped cross-section column 1, in which a reinforcing body 2 is embedded in a lower portion of a corner of the box-shaped cross-section column 1. The reinforcing body 2 is made of precast material and is embedded together with the reinforcing bars 1a of the box-shaped cross-section column 1 and embedded. The diameter, the number, and the arrangement of the reinforcement body 2 depend on the size of the box-shaped cross-section column 1. It can be arbitrarily determined.

In the reinforcing body 2, as shown in FIG. 3, a steel bearing plate 5 is welded to the lower end of the cylindrical body 4 in which the spiral streaks 3 are in close contact with each other at an interval of 0 to 2 mm. It is formed by filling with a solidifying material 6 such as high-strength concrete, mortar, cement paste, gypsum. Reinforcing bars 7 may be arranged on the inner surface of the tubular body 4, and the bearing plates 5 may be provided not only at the lower end of the tubular body 4 but also at both upper and lower ends (FIGS. 4 and 5). FIG. 2 shows a case in which reinforcing bodies 2 are embedded in a circular box-shaped cross-section column 1 at equal intervals. In this case as well, the number and arrangement of the reinforcing bodies 2 are arbitrarily determined according to the size of the box-shaped cross-section column 1. can do.

Further, FIG. 6 shows the reinforcing body 2 embedded in the lower part of the wall pillar 8, and FIGS. 7 and 8 show the reinforcing body 2 embedded in the cross-shaped and L-shaped wall pillars 8. The diameter, number, arrangement, etc. of the can be arbitrarily determined.

Further, FIG. 9 shows a large-section pillar 9 used for a megastructure structure, and FIG. 10 shows a pillar 10 of a bridge pier,
In either case, the reinforcing body 2 is embedded along the inside of the stirrup 11. Also in this case, similarly to the above, the diameter, the number, and the arrangement of the reinforcing bodies 2 can be arbitrarily determined according to the size of the column. Further, the reinforcement body 2 is not limited to the precast product as described above, but can be produced on site. In this case, the solidified material 6 is not filled in the tubular body 4 and is conveyed to the site and the solidified material 6 is cast at the same time as the concrete casting of the cast-in-place concrete pillar.
To fill.

[0010]

EFFECTS OF THE INVENTION By embedding a reinforcing body in a reinforced concrete column and filling the solidified material in the cylindrical body in which the spiral reinforcement is closely contacted, the reinforcing body can provide a reinforced concrete for high axial force with high toughness. .

A reinforcing member is embedded in a box-shaped cross-section column, and the reinforcing member is filled with a solidifying material in a cylindrical body in which spiral streaks are in close contact, whereby the toughness of the box-shaped cross-section column can be enhanced.

The toughness of the wall column can be enhanced by embedding the reinforcing member in the wall column and filling the solid body in the cylindrical body in which the spiral streak is in close contact.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a box-shaped cross-section column.

FIG. 2 is a cross-sectional view showing another embodiment of the box-shaped cross-section column.

FIG. 3 is a vertical cross-sectional view of a reinforcing body.

FIG. 4 is a plan view showing another embodiment of the reinforcing body.

FIG. 5 is a front view showing another embodiment of the reinforcing body.

FIG. 6 is a cross-sectional view of a wall column.

FIG. 7 is a cross-sectional view of a cross wall pillar.

FIG. 8 is a cross-sectional view of an L-shaped wall column.

FIG. 9 is a cross-sectional view of a reinforced concrete column.

FIG. 10 is a cross-sectional view of a reinforced concrete column.

[Explanation of symbols]

 1 Box-shaped column section 2 Reinforcement body 3 Spiral muscle 4 Cylindrical body 6 Solidified material

Claims (3)

[Claims] 1. A reinforced concrete member for high axial force, characterized in that a reinforcing body is embedded in a reinforced concrete column, and the reinforcing body is filled with a solidifying material in a cylindrical body in which spiral reinforcements are closely contacted. 2. The reinforced concrete column for high axial force according to claim 1, wherein the reinforced concrete column is a box-shaped cross-section column. 3. The reinforced concrete column for high axial force according to claim 1, wherein the reinforced concrete column is a wall column.