JP2001164681A - Bar arrangement structure of rc core wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bar arrangement structure of a RC core wall capable of rationalizing bar arranging work with more efficiency by prefabricating the arrangement of bars. SOLUTION: A plurality of 2 prefabricated into planar, rectangular columns with plural main bars 2a and hooped bars 2b are installed neighboring each other in a lateral direction, as reinforcing bars for a RC core wall 1. A plurality of main beam bars 3 having heights corresponding to the location of a beam to be arranged are arranged between the cages 2, 2 neighboring each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcement structure of a RC core wall, and is widely practiced in a residential building or an office building having an RC structure.

[0002]

2. Description of the Related Art In general, in the case of an RC structure, for example, as shown in FIG. A so-called seismic core 23 having a planar square or rectangular shape, a circular shape, or a planar H shape by being streaked is arranged.

[0003] It is known that all of the axial force, the bending force and the shear force act on the seismic core 23 and also act locally. For this reason, a large amount of reinforcing bars are arranged on the earthquake-resistant wall 22 forming the earthquake-resistant core 23. Until now, reinforcing bars arranged in this type of seismic core 23 are, for example, FIGS. 8 (a) and 8 (b) and FIGS. 9 (a) and 9 (b).
As shown in the figure, a plurality of main rebars 24 and hoop rebars 25 are arranged in a plane rectangular column shape at the end portion A and the corner portion B of the earthquake-resistant wall 22 in order to prepare for stress concentration. A vertical bar 26 and a horizontal bar 27 are arranged, and a wall bar for fixing these reinforcing bars with a plurality of width stopping bars 28 is provided.

[0004]

However, the conventional arrangement method has problems that not only does the arrangement of the reinforcements become dense and the arrangement work becomes complicated, but also the work efficiency is extremely poor. The present invention has been made in order to solve the above-described problems, and an object of the present invention is to provide an RC core wall reinforcing structure in which reinforcing bars are prefabricated to enable rationalizing the reinforcing bars, improving work efficiency, and the like. And

[0005]

According to a first aspect of the present invention, there is provided an RC core wall reinforcing structure according to the present invention. A plurality of rebar cages assembled in a column shape are installed adjacent to each other in the lateral direction as reinforcing bars for the RC core wall.

According to a second aspect of the present invention, in the reinforcing structure of the RC core wall according to the first aspect, a plurality of beam main reinforcing bars are arranged between adjacent reinforcing bars at a height at which the beams are arranged. According to a third aspect of the present invention, in the reinforcing structure of the RC core wall according to the first or second aspect, adjacent reinforcing cages are connected by a plurality of connecting fittings.

According to a fourth aspect, the RC of the first or second aspect is provided.
In the reinforcing structure of the core wall, adjacent reinforcing bars are connected by horizontal reinforcing bars arranged as wall reinforcing bars.

[0008]

1 to 4 show an embodiment of the present invention. In the figures, an RC core seismic core 1 is provided at the center of the structure.
Are arranged in a plane H shape. The flange and the web of the earthquake-resistant core 1 are integrally formed from the earthquake-resistant wall 1A and the earthquake-resistant wall 1B.

On the earthquake-resistant walls 1A and 1B, there are provided a plurality of reinforcing bars 2 each of which is formed as a reinforcing bar from a plurality of main reinforcements 2a and hoop reinforcements 2b into a flat rectangular column shape, respectively, in the lateral direction of the earthquake-resistant walls 1A and 1B. It is built adjacent to. The reinforcing bars 2 include, for example, those shown in FIGS. 4A to 4F, in which the number and positions of the main bars 2a are different.
A reinforcing hoop further provided with a circular hoop or spiral streak 2c as shown in (a), or (b)
And the like, as shown in FIG.

Further, a plurality of beam reinforcements 3 are continuously arranged in a horizontal direction between the adjacent reinforcing bars 2 at the height at which the beam of each floor is arranged. The fixing bars 4 are fixed to the main bars 2a of the rebar basket 2 located on the outermost side via fixing members 4 such as plates. The beam main reinforcing bar 3 is arranged in at least two stages (upper and lower stages).

Further, a plurality of horizontal bars 5 are arranged at predetermined intervals on both outer sides of the plurality of reinforcing bars 2 thus installed as wall reinforcing bars. In addition, since a large axial force mainly acts on this kind of core wall, the horizontal streaks 5 may be extremely small as compared with the vertical streaks (main streaks 2 a), and the beam main streaks 3 can be formed by arranging many horizontal streaks 5. Can be omitted.

The main reinforcing bars 2a, the beam main reinforcing bars 3, and the horizontal reinforcing bars 5 of the rebar cage 2 are connected to each other by fittings (not shown) such as couplers. In addition to these round bars, deformed bars and the like are used for these bars. In this way, the reinforcing bars 2 pre-assembled into a rectangular column shape from the plurality of main reinforcements 2a and the hoop reinforcements 2b are arranged on the flanges and the web of the seismic core 1, thereby making the reinforcements prefabricated. This can greatly improve the efficiency of the arrangement work.

Further, since the reinforcing steel cage 2 is laid at a site yard (a prefabricated reinforcing steel bar yard for outer pillars) on the site, a high-quality column-shaped prefabricated reinforcing bar can be obtained. Furthermore, local stress due to external force can be adjusted by appropriately changing the diameter and the amount of reinforcement of the main reinforcement 2a and the hoop reinforcement 2b of each reinforcing cage 2, thereby providing a very reasonable reinforcement without waste. Can design.

[0014] Further, by using spiral muscles and core muscles as reinforcing reinforcements, the strength and toughness can be improved, and the seismic performance of the seismic core can be further enhanced.
FIGS. 5 and 6 show another example of the present invention. In the examples shown in FIGS. 1 to 4, adjacent reinforcing bars 2 and 2 are connected to each other by a plurality of connecting fittings 6.

The connecting bracket 6 is formed in a U-shape from a reinforcing bar, a steel plate, or the like, and the main reinforcing bars 2a, 2a of the adjacent reinforcing cage 2 are formed.
The hooks at both ends are fitted into the main bar 2a by hooking them between the main bars 2a. By doing so, the seismic performance of the seismic core 1 can be further enhanced by integrating the adjacent reinforcing steel cages 2.

In the above example, the seismic core 1 has a plane H
Although the reinforcement arrangement structure in the case of being arranged in the form has been described, it is needless to say that the arrangement is not limited to this shape, and the reinforcement arrangement of the seismic core arranged in the plane L-shape, the E-shape, or the plane circular form is also possible. It goes without saying that it can be applied to

The adjacent reinforcing bars 2 and 2 may be connected by one or more horizontal bars 5 arranged as wall reinforcing bars.

[0018]

The present invention is as described above. In particular, a reinforcing steel cage assembled from a plurality of main reinforcing bars and a hoop reinforcing bar into a rectangular column shape in a horizontal direction is used as a reinforcing bar for the RC core wall. The arrangement is pre-fabricated, which has the effect of rationalizing and improving the efficiency of the arrangement work.

[Brief description of the drawings]

FIG. 1 is a plan view of a structure showing an example of an arrangement of earthquake-resistant cores.

FIG. 2 is a cross-sectional view showing a reinforcement arrangement structure of the earthquake-resistant core.

FIG. 3 (a) is a longitudinal sectional view showing a reinforcement arrangement structure of an earthquake-resistant core,
(B) is a sectional view taken along the line II in (a).

FIGS. 4A to 4F are cross-sectional views showing an example of a reinforcing cage.

FIG. 5 is a cross-sectional view showing a reinforcement arrangement structure of the earthquake-resistant core.

FIG. 6 (a) is a longitudinal sectional view showing a reinforcement arrangement structure of an earthquake-resistant core,
(B) is a sectional view taken along the line II in (a).

FIG. 7 is a plan view of a building showing an example of arrangement of earthquake-resistant cores.

8A and 8B show a reinforcing bar structure of a conventional seismic core, wherein FIG. 8A is a cross-sectional view thereof and FIG. 8B is a longitudinal sectional view thereof.

9A and 9B show a reinforcement arrangement structure of a conventional earthquake-resistant core, wherein FIG. 9A is a cross-sectional view thereof, and FIG. 9B is a longitudinal sectional view thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Earthquake-proof core 1A Earthquake-proof wall 1B Earthquake-proof wall 2 Reinforced basket 2a Main bar 2b Hoop bar 2c Hoop bar and spiral bar 2d Core bar 3 Beam main bar 3a End of beam main bar 4 Fixing metal 5 Horizontal bar 6 Connecting metal

Claims (4)

[Claims] The present invention is characterized in that a plurality of reinforcing bars, which are assembled into a rectangular column shape from a plurality of main bars and hoop bars, are installed adjacent to each other in the lateral direction as reinforcing bars for the RC core wall. RC core wall reinforcement structure. 2. The RC core wall reinforcing structure according to claim 1, wherein a plurality of main beam reinforcing bars are continuously arranged between adjacent reinforcing bars of a height at which the beams are arranged. . 3. The RC core wall reinforcing structure according to claim 1, wherein adjacent reinforcing cages are connected by a plurality of connecting metal fittings. 4. The car according to claim 1, wherein adjacent reinforcing bars are connected by transverse bars arranged as wall reinforcing bars.
Or the reinforcing bar structure of the RC core wall according to 2.