JP2726606B2 - How to assemble beam reinforcement - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for assembling a beam reinforcing bar using two types of prefabricated reinforcing bars.

[0002]

2. Description of the Related Art For example, when the site of a building site is narrow and a prefabricated yard for beam reinforcing bars cannot be secured at the site, the beam reinforcing bars are prefabricated as reinforcing bar cages at factories or the like and then brought into the site. And assembled. When prefabricating beam rebar, from the viewpoint of labor saving on site work, the beam rebar is separated at the joint position of the main rebar and divided into a plurality of blocks straddling columns on a plane, and for each of the divided blocks, It is advantageous to prefabricate into L-shaped, T-shaped, ten-shaped, and key-shaped ones in which a reinforcing bar in one direction (span direction) is connected to a reinforcing bar in an orthogonal direction (row direction), but since it is bulky, The advantage of prefabrication is lost because transport becomes impossible or transport efficiency is reduced.

[0003] In the case where the reinforcing bars in two directions are separated and prefabricated in order to increase the transport efficiency, one of the reinforcing bars is installed first at the site, but when the other reinforcing cage is installed, Since it is not possible to set the orthogonal reinforcing bar at a predetermined level because it interferes with the upper main bar of the reinforcing bar installed in advance, only one direction reinforcing bar is actually assembled at the factory. Attachment of the reinforcing bars perpendicular to the site on the site of the site or after the installation of the reinforcing bar cages avoids interference between the reinforcing bar cages, and the fact that the assembly of one of the reinforcing bars depends on the field work It is.

The present invention has been made based on the actual situation of a conventional method for prefabricating a beam reinforcing bar, and aims to newly propose an assembling method for saving labor on site while maintaining transportation efficiency. It is.

[0005]

According to the present invention, both a main reinforcing rod cage installed in one direction and an orthogonal reinforcing rod cage perpendicular to the main reinforcing rod cage are provided.
Prefabricating the shape into a planar shape and removing the interference part of the main reinforcing cage at the time of installation with the orthogonal reinforcing cage in advance to install the main reinforcing cage first and to install the orthogonal reinforcing cage later. Enables labor saving while improving transportation efficiency.

The main reinforcing bar cage has a length exceeding the distance between adjacent columns in one direction, and is assembled by previously removing a connecting position to the column and an upper main bar near the column. The orthogonal reinforcing cage has a length at least from the column to the intermediate portion of the beam, and is installed at the same level as the main reinforcing cage after the main reinforcing cage is installed at a predetermined position.

After the orthogonal reinforcing bars are installed, the upper reinforcing bars from which the main reinforcing bars have been removed are arranged, and connected to the upper reinforcing bars connected to the upper reinforcing bars, so as to reach the middle portion of the beam connected to two or more columns. The assembly of the beam reinforcing bar in one block on the plane including the is completed.

Since the main reinforcing rod cage and the orthogonal reinforcing rod cage are pre-assembled in an I-shaped planar shape, the transport efficiency is improved,
In addition, many parts of the main reinforced cage and the orthogonal reinforced cage are pre-assembled,
By installing both rebar baskets as they are, the assembly work on the site and formwork on the site becomes unnecessary or simplified, and the benefits of prefabrication are utilized, making it possible to save on-site work. Can be

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings showing one embodiment.

According to the present invention, a main reinforcing cage 1 pre-assembled in an I-shape planar shape and an orthogonal reinforcing steel cage 2 orthogonal to the same and also similarly assembled in an I-shape planar shape are installed on site. As shown, this is a method of completing the assembly of the beam rebar in one block on a plane including the two columns 3 and 3 and the intermediate portion of the beam 4 connected thereto. In the embodiment, a case where the main reinforcing bar cage 1 is used as the beam reinforcing bar in the span direction and the orthogonal reinforcing bar cage 2 is used as the beam reinforcing bar in the girder direction is shown.

As shown in FIG. 1, the main reinforcing bar 1 has a length exceeding the distance between the adjacent columns 3 in one direction, that is, the joint position of the beam main reinforcing bar from the side column 32 to the center column 31 adjacent thereto. The upper main bar 11, the lower main bar 12, and the stirrup 13 are assembled as shown in FIG.

As shown in FIG. 2, the upper reinforcing bar 14 at the connecting position with the column 3 of the main reinforcing cage 1 is separated from the upper reinforcing bar 11 and removed in advance, and the upper end of the stirrup 13 is absent. The removed upper main bar 14 is arranged after the orthogonal reinforcing bar cage 2 is installed. Stirrup 13 in the middle of main reinforcing bar 1
Is a closed ring as shown in FIG. 3 which is a cross-sectional view taken along the line xx of FIG. 2. Y- in FIG.
As shown in FIG. 4 which is a sectional view taken along the line y, it is composed of two divided rebars, and the upper rebar is attached after the upper main bar 14 is arranged.

As shown in FIG. 1, the orthogonally reinforced cage 2 has a length extending at least from the column 3 to the intermediate portion of the beam 4, and is similar to the main reinforced cage 1 from the upper main bar 21, the lower main bar 22, and the stirrup 23. Assembled. Orthogonal steel cage 2 is main steel cage 1
Since it is dropped after installation, there is no rebar removed in advance over the entire length as shown in FIG. 5, and it is assembled in a complete state. FIG. 5 shows the orthogonal reinforcing bar 2 installed in a section divided at each intermediate portion of the beams 4 and 4 that are continuous in the row direction across the side columns 32 shown in FIG.

FIG. 6 shows an example of manufacturing the orthogonally reinforced cage 2 installed in the section from the corner post 33 shown in FIG. 1 to the middle of the beam 4 in the girder direction. The upper main bar 21 and the lower main bar 22 are connected to the corner pillar 33 at one end side.
Folded for fixing to

FIGS. 7 to 9 show the procedure for installing the main reinforcing rod cage 1 and the orthogonal reinforcing rod cage 2. First, as shown in FIG. 7, the main reinforcing rod cage 1 and the reinforcing rod cage 5 are set in the span direction. The lower main bar 12 is connected to the lower main bar 52 of the reinforcing bar cage 5.

Subsequently, as shown in FIG. 8, the orthogonal reinforcing cage 2 is dropped from the main reinforcing cage 1 and installed. After the installation of the orthogonal reinforcing bar cage 2, the upper main bar 14 removed from the main reinforcing bar cage 1 is arranged at a predetermined position as shown in FIG. The upper main reinforcement 14 on the side pillar 32 side is connected to the upper main reinforcement 11, and the upper reinforcement on the middle pillar 31 side.
14 is the upper main bar 11 and the upper main bar 51 of the reinforcing bar basket 5 connected to the upper main bar 11.
Connected to. The connection between the lower main bar 12 and the lower main bar 52 and the connection between the upper main bar 14 and the upper main bar 11 and the upper main bar 51 are both beams 4
Is carried out by a threaded joint using the coupler 6 or the like, since it is located at the end of the head and the error can be absorbed.

If the upper main bar 14 to be removed in advance is temporarily connected to the upper main bar 11 of the main reinforcing bar 1 using the coupler 6, the shape of the main reinforcing bar 1 can be maintained during transportation and lifting.
It is valid.

The rebar arrangement of the upper main bar 14 removed from the main reinforcing bar cage 1 completes the assembly of the beam reinforcing bar in one block.
In the embodiment shown in FIG. 1, the beam reinforcing bars of the other blocks are assembled by the main reinforcing bar cage 1 and the reinforcing bar cage 5 and the two types of orthogonal reinforcing bar cages 2 and 2 shown in FIGS.

[0019]

The present invention is as described above. Both a main reinforcing bar cage installed in one direction and an orthogonal reinforcing bar cage orthogonal thereto are prefabricated into an I-shaped planar shape, and the orthogonal reinforcing bar cage of the main reinforcing bar cage is formed. Since the upper main bar of the main reinforcing bar in the interference part with the main reinforcing bar is removed in advance, it is possible to install the main reinforcing bar in advance and then drop the orthogonal reinforcing bar as it is and install it later. Many parts of the rebar basket are prefabricated, and the labor efficiency of site work can be reduced while improving the transportation efficiency.

[Brief description of the drawings]

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a beam plan view showing a divided section of a main reinforcing rod cage and an orthogonal reinforcing rod cage.

FIG. 2 is an elevational view showing a production example of a main reinforcing rod cage.

FIG. 3 is a sectional view taken along line xx of FIG. 2;

FIG. 4 is a sectional view taken along line yy of FIG. 2;

FIG. 5 is an elevational view showing a production example of an orthogonal reinforcing rod cage.

FIG. 6 is an elevation view showing another example of manufacturing the orthogonal reinforcing bar cage.

FIG. 7 is an elevational view showing a state at the time of installing a main reinforcing rod cage.

FIG. 8 is an elevational view showing a state at the time of installation of the orthogonal reinforcing rod cage.

FIG. 9 is an elevational view showing a state in which the upper main bar removed from the main reinforcing bar cage in advance is arranged.

[Explanation of symbols]

1 ... Main reinforcement cage, 11 ... Top main reinforcement, 12 ... Bottom main reinforcement, 13
... stirrup, 14 ... upper main bar, 2 ... orthogonal reinforcing bar cage, 21 ... upper main bar, 22 ... lower main bar, 23 ... stirrup, 3 ... pillar, 31 ... middle pillar, 32 ... Side pillar, 33 ... Corner pillar, 4 ... Beam, 5 ... Reinforcing cage, 51 ... Top main bar, 52 ...
Lower main bar, 6 coupler.

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Ken Kitamura 6-5-9 Akasaka, Minato-ku, Tokyo Inside Artes Co., Ltd. (56) References JP 5-179699 (JP, A) JP 4-A 27070 (JP, A) JP-A-3-140524 (JP, A) JP-A-61-146969 (JP, A) JP-A-48-77615 (JP, A) JP-A-4-247150 (JP, A) Actually open Hei 3-105623 (JP, U)

Claims (1)

(57) [Claims] 1. A main reinforcing bar cage which is previously assembled into an I-shaped planar shape from an upper main bar, a lower main bar, and a stirrup, and has a length exceeding a distance between adjacent columns in one direction. And an orthogonal reinforcing bar which is assembled from the stirrup into an I-shaped planar shape, and which is orthogonal to the main reinforcing bar and has a length at least from the column to the intermediate portion of the beam, is installed at the site, and is mounted on two or more columns. This is a method of assembling a beam reinforcing bar in one block on a plane including up to an intermediate portion of a beam to be connected, and a connecting position of a main reinforcing bar with a column and an upper main bar near the column are removed in advance. After the basket is set at a predetermined position, the orthogonal reinforcing cage is dropped to the same level as the main reinforcing cage, the upper main reinforcing bars removed from the main reinforcing cage are arranged, and connected to the upper main reinforcing bar continuous thereto. How to assemble beam reinforcement.