JPH11159144A - Setting-up method for upstanding-section concrete reinforcing net - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a finishing-setting-up method for a erecting section concrete reinforcing net, in which the regularly arranged reinforcing nets are simply set up rapidly, safely and surely without requiring skill when a wall, a sill, etc., set up of concrete from a slab and a beam section. SOLUTION: A fixed number of reinforcements 11a arranged in approximately parallel while holding regular intervals are buried by using a parallel reinforcement group 1a formed by fixing by at least one bar 12a approximately crossed at right angles with these reinforcements 11a in constant height h1 when the reinforcing net in an upstanding section is constituted. Accordingly, the bar 12a has positioning action at the time of burying and the fixing action and burying preventive action of a reinforcement 11a group, and the regularly arranged reinforcement group 1a is erected simply and quickly, and the reinforced net can be configured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of assembling a reinforcing steel net forming a rising portion such as a wall or a sill of a concrete building or the like. More specifically, it relates to the improvement.

[0002]

2. Description of the Related Art Conventionally, when constructing a reinforced concrete condominium or building, as shown in FIG. 3, assembling of a reinforcing network at a portion rising from a slab or a beam, such as a base of a wall or a sill, is performed as shown in FIG. After placing concrete in the reinforcing bar net (u1) assembled into beams and beams, before this concrete does not harden, embed the vertical reinforcing bars (f1) one by one at almost equal intervals and stand upright. It is said that a reinforcing bar network is assembled on site by bridging and binding horizontal bar reinforcing bars (f2a) (f2b) around the upper surface of the concrete of the standing reinforcing bar (f1) group and the upper end of these reinforcing bars (f1) group. The way was being taken.

[0003] However, in such a method, individual bars are insufficiently fixed before they are fixed to the horizontal bar bars (f2a) and (f2b) just by being buried in the concrete, so that slight contact is caused. For example, it may fall down or be buried more deeply, resulting in irregular intervals and heights as a whole, which makes it difficult to bind the horizontal bars smoothly.

The upper horizontal bar (f2b) is fixed to the upper end of each vertical reinforcing bar (f1) by welding, and the lower horizontal bar (f2b) is fixed.
2a) is tied and fixed to each reinforcing bar (f1) in the vertical direction, but during these fixing work, the buried reinforcing bar (f1) group is distorted due to contact from above or external force, and some Rebar (f
If 1) is buried deeper, the height will be uneven, and it will be necessary to reassemble the rebar. When people or things came down, there was a very dangerous situation where they would stick into them.

Further, in order to avoid the danger of piercing as described above, a reinforcing bar (f1b) whose upper end is bent downward as shown in FIG. 4 or a cap is provided at the upper end is also used. On the other hand, in the former case, the work of binding the horizontal bar rebar (f2) becomes complicated, and in the latter case, manual work of putting caps one by one becomes complicated.

[0006]

SUMMARY OF THE INVENTION The present invention relates to a method for starting up a wall or a sill from concrete in a slab or a beam.
It is an object of the present invention to provide a method of assembling a concrete reinforcing steel net in a start-up section, which can easily and quickly assemble a reinforcing steel net which is safe, secure, and requires no skill, and which is neat.

[0007]

Thus, according to the invention of claim 1 of the present application, "a predetermined number of reinforcing bars (11a) which are arranged substantially in parallel while maintaining a predetermined interval are fixed to a predetermined height ( h1)
The parallel reinforcing bar group (1a) formed by fixing with at least one bar (12a) substantially orthogonal to these, before the concrete cast in the slab or the beam portion does not harden, A rising section concrete, wherein the lower end side is buried from the top of the cast concrete and buried to the bar (12a) at the lowest position, and the parallel reinforcing bar group (1a) is erected by hardening of the concrete. How to build a reinforced mesh
Is provided.

[0008] In the method of the present invention, the starting portion is
It means a part such as a wall or a sill rising from a slab or a beam in a concrete building. Further, the method of the present invention is particularly suitable when the rising portion is integrally formed with the building frame.

The parallel reinforcing bar group (1a) used in the method of the present invention
A predetermined number of reinforcing bars (11a) arranged substantially in parallel and substantially at the same height at the upper end while maintaining a predetermined interval, and fix them substantially orthogonally to these at a fixed height (h1) At least one
And a bar (12a). Note that the above-mentioned intervals are preferably equal, but are not limited to this. In the rebar group (1a), fixing of the rebar (11a) and the bar (12a)
Fixing by welding is preferable because it has a strength that does not easily come off even by external force.

The parallel reinforcing bar group in the present invention may be a bar-shaped reinforcing bar group consisting of a predetermined number of bar-shaped reinforcing bars and one bar, and a predetermined number of bar-shaped reinforcing bars (11a) and two or more bar-shaped reinforcing bars. (12a) (13
a) may be a rebar group (1a) consisting of
An inverted U-shaped basket-shaped reinforcing bar group (1b) including a predetermined number of inverted U-shaped reinforcing bars (11b) and two or more bars (12b) may be used.

[0011] Among the bar-shaped reinforcing bar group and the mesh reinforcing bar group, the mesh reinforcing bar group (1a) having the upper end bar (13a) for connecting and fixing the upper ends of the reinforcing bar group is preferable from the viewpoint of safety. Therefore, according to the invention according to claim 2 of the present application, "a predetermined number of bar-shaped rebars (11a) arranged substantially in parallel while maintaining a predetermined interval and substantially aligned with the height of the upper end (111a), At least one positioning bar (12a) having a certain height (h1) and being substantially perpendicular to these.
At the same time, and the aligned upper ends of the bar-shaped reinforcing bars (11a)
Before the concrete cast in the slab or beam, etc. hardens, the lower end side of the mesh reinforcing bar group (1a) formed by connecting and fixing (111a) with the upper end bar (13a) is Assembling a concrete reinforcing bar net, wherein the reinforcing bar group (1a) is erected by embedding from the upper surface of the cast concrete to the positioning bar at the lowest position, and hardening the concrete. A method is provided.

In the mesh reinforcing bar group (1a), it is preferable that a predetermined number of bar reinforcing bars (11a) are arranged at substantially equal intervals.
It is not limited to this. In addition, the braided rebar group (1a) is preferably used for a component having a rising portion having a large area and a relatively small thickness, such as a wall, but is not limited to this.

The present invention also provides a method using the inverted U-shaped basket-shaped reinforcing bar group. That is, according to the invention of claim 3 of the present application, "the height of the U-shaped bottom portion (111b) positioned substantially parallel and at the upper end while maintaining a predetermined number of the inverted U-shaped reinforcing bars (11b) at predetermined intervals. Are almost aligned, and these reverse U
Inverted U-shaped basket formed by fixing each leg (112b) of the reinforcing bar (11b) at a certain height (h2) with at least one positioning rod (12b) substantially orthogonal to these. Reinforcing bars (1b)
Before the concrete poured into the slab or the beam portion hardens, the lower end of the leg is buried from the upper surface of the cast concrete and a pair of positioning rods (12b) at the lowest position is inserted.
(12b), and fixing the inverted U-shaped basket-shaped reinforcing bar group (1b) by hardening the concrete. "

In the inverted U-shaped basket-shaped reinforcing bar group (1b), a predetermined number of inverted U-shaped reinforcing bars (11b) are preferably arranged at substantially equal intervals, but the present invention is not limited to this. The inverted U-shaped basket-shaped reinforcing bar group (1
b) is suitably used for a component having a low rising height such as a sill or a waist wall, but is not particularly limited thereto.

[0015]

According to the invention of claim 1 of the present application, the parallel reinforcing bars (1a) are buried from the lower end side of the concrete slab or beam portion before the concrete does not harden. The bar (12a) is buried up to the lowest bar (12a) and waits for concrete to harden.During this time, even if a parallel external bar group (1a) receives a downward external force, the bar (12a) resists the concrete surface and becomes deeper. Implantation is prevented.

Further, since the parallel reinforcing bar group (1a) is fixed by at least one bar (12a), the parallel reinforcing bar group (1a)
Even if an external force is applied to a part of the steel bar, the parallel reinforcing bar group moves as a unit, so that the heights are not uniform and the interval between the reinforcing bars is not disturbed. Even if it is buried deeper, by pulling up a part of the parallel reinforcing bar group (1a), the parallel reinforcing bar group (1a) can be easily erected to a predetermined height in a uniform state. .

According to the invention of claim 2 of the present application,
In addition to the effect equivalent to the first aspect, the upper end member (13a) is attached to the upper end of the embedded rebar group (1a), so that the upper end of each reinforcing bar (11a) is exposed. There is no.

According to the invention of claim 3 of the present application,
Before the concrete does not harden in the slab or beam where the concrete is cast, the inverted U-shaped basket-shaped reinforcing bar group (1b) is buried from the lower end side and a pair of positioning rods (12b) at the lowest position are inserted. ) And wait for the concrete to harden, but during this time even if a downward external force is applied to the inverted U-shaped basket-shaped reinforcing bar group (1b), a pair of positioning rods (12b) (12b) Resisting and deeper implantation is prevented.

Further, since the inverted U-shaped basket-shaped reinforcing bar group (1b) is fixed by at least one pair of positioning rods (12b), (12b), an external force is applied to a part of the basket-shaped reinforcing bar group (1b). However, since the cage-shaped reinforcing bar group (1b) moves as a unit even when the reinforcing bar is added, the height of the reinforcing bars does not become uneven and the interval between the reinforcing bars is not disturbed.
Even if it is buried deeper, it is possible to raise a part of the inverted U-shaped basket-shaped reinforcing bar group (1b) by pulling it up.
(1b) is to be easily erected at a predetermined height in the aligned state. Further, the upper end of the buried inverted U-shaped basket-shaped reinforcing bar group (1b) is lined with the U-shaped bottom (111b), so that it does not penetrate a falling object from above.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the illustrated embodiments, but the present invention is not limited thereto. First Embodiment FIG. 1 is a schematic perspective view illustrating an example of a method of assembling a reinforcing bar network according to the present invention.
In the same figure, (1a) is a braided reinforcing bar group, (2) is a beam reinforcing bar network,
(3) shows beam-cast concrete, and (4) shows slab-cast concrete.

The rebar group (1a) includes a predetermined number of bar-shaped rebars (11
a), in this example, are arranged substantially in parallel with substantially equal intervals (t1) and with the height of the upper end (111a) substantially aligned, and at a constant height (h1) The upper end of the bar (11a), which is fixed by welding to the positioning rod (12a),
(111a) is formed by welding and connecting and fixing the upper end bar (13a).

Before the concrete (3) cast in the beam is hardened, the rebar group (1a) having such a structure is re-shaped as shown by a two-dot chain line in FIG. Is buried in the concrete (3) from the lower end thereof, and is buried up to the positioning bar (12a), where the concrete is hardened.

Even if an external force, particularly a downward external force, is applied to the mesh reinforcing bar group (1a) until the concrete hardens, the positioning rod (12a) resists the concrete surface and is buried deeper. Is prevented. In addition, even if an external force is applied, since the positioning bar (12a) and the upper end bar (13a) unite a plurality of bar-shaped rebars (11a) integrally, they can only be shifted or embedded as a whole, The arrangement state of the individual reinforcing bars does not become irregular, and the reinforcing bars can be erected immediately as they are.

Further, since the upper end member (13a) is attached to the upper end of the buried reticulated reinforcing bar group (1a), the upper end of each reinforcing bar (11a) is not exposed, so that the falling object from above is not exposed. It is safe without piercing.

Embodiment 2 FIG. 2 is a schematic perspective view for explaining an example of a method of assembling a reinforcing bar network according to the present invention.
In the same figure, (1b) shows an inverted U-shaped basket-shaped reinforcing bar group, (2) shows a beam portion reinforcing bar network, (3) shows a beam portion placing concrete, and (4) shows a slab placing concrete.

The inverted U-shaped basket-shaped reinforcing bar group (1b) includes a predetermined number of inverted U-shaped reinforcing bars (11b), which are substantially parallel to each other at substantially equal intervals (t2) in this example, and are U-shaped bottom portions located at the upper end. The height of (111b) is almost aligned and a pair of positioning rods on both sides orthogonal to each leg (112b) of each inverted U-shaped basket-shaped reinforcing bar group (1b) at a fixed height (h2) (12b)
(12b) is fixed by welding to each leg (112b).

An inverted U-shaped basket-shaped reinforcing bar group (1b) having such a configuration.
Before the concrete (3) cast in the beam (31) hardens, the lower end of the leg (112b) is embedded in the cast concrete (3) as shown by the two-dot chain line in the same figure. Then, a pair of positioning bars (12b) and (12b) are embedded, and the concrete is hardened there.

Until the concrete hardens, the reverse U
Even if external force, especially downward external force, is applied to the group of cage-shaped reinforcing bars (1b), the pair of positioning rods (12b) (12b) resists the concrete surface and prevents deeper embedding. I do.
Even if external force is applied, a pair of positioning rods (12b)
(12b) integrates the individual inverted U-shaped rebars (11b) as a unit, so that the entire U-shaped rebar (1b) may be misaligned just by shifting or embedding as a whole. Nothing to do, it can be restored immediately.

Further, the buried inverted U-shaped basket-shaped reinforcing bar group (1b)
The upper end is a U-shaped bottom (111b), so that it is safe from piercing a falling object from above.

[0030]

According to the invention of claim 1 of the present application, a predetermined number of reinforcing bars that are erected substantially parallel to each other while maintaining a predetermined interval are provided at least in a direction substantially perpendicular to these at a fixed height. Since the parallel reinforcing bars formed by fixing with the bars are buried in the cast concrete before hardening, it can be executed while maintaining a uniform state compared to the method of burying individual reinforcing bars. Also, even if an external force acts while waiting for hardening in the buried state, it can be immediately returned to the upright state. Even if the number of hands is small, the reinforcing net can be assembled neatly and neatly, and the construction period can be shortened. Therefore, cost reduction can be achieved.

According to the invention of claim 2 of the present application,
In addition to providing the same effect as in the first aspect, the upper end member is attached to the upper end of the embedded reinforcing bar group, so that the upper end of each individual reinforcing bar is not exposed and is safe. Work such as bending of the upper end portion and capping is completely unnecessary.

According to the invention of claim 3 of the present application,
In addition to providing the same effects as those of the first aspect, the upper ends of the embedded inverted U-shaped basket-shaped reinforcing bars are lined with U-shaped bottoms, so that they are not pierced by falling objects from above and are safe. Therefore, as in the case of the second aspect, operations such as bending of the upper end portion and capping as in the related art become completely unnecessary.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view illustrating an example of a method of assembling a reinforcing bar net according to the present invention.

FIG. 2 is a schematic perspective view illustrating an example of a method of assembling a reinforcing bar network according to the present invention.

FIG. 3 is a schematic perspective view illustrating a problem of a conventional example.

FIG. 4 is a schematic perspective view illustrating a problem of another conventional example.

[Explanation of symbols]

 (1a)… Reinforcing bar group (parallel reinforcing bar group) (1b)… Inverted U-shaped cage bar bar group (2)… Reinforcing bar net (3)… Concreting beam (4)… Concreting slab (11a) )… Bar-shaped rebar (11b)… Inverted U-shaped rebar (12a), (12b)… Positioning bar (bar) (13a)… Top bar (111a)… Top (111b)… U-bottom (112b) …leg

Claims (3)

[Claims] 1. A parallel reinforcing bar formed by fixing a predetermined number of reinforcing bars arranged in a substantially parallel manner at a predetermined interval with at least one bar material which is substantially perpendicular to the reinforcing bars at a fixed height. Before the concrete poured into the slab or beam part is hardened, the group is buried from the upper surface of the cast concrete and buried up to the bar at the lowest position. A method for assembling a concrete reinforcing bar net in a rising section, wherein a reinforcing bar group is erected. 2. A method according to claim 1, wherein a predetermined number of bar-shaped reinforcing bars arranged substantially parallel to each other at a predetermined interval and substantially at the same height at the upper end are provided with at least one positioning bar substantially perpendicular to the bars at a constant height. Before the concrete cast on the slab or beam, etc. does not harden, the mesh reinforcing bars formed by connecting and fixing the aligned upper ends of the bar-shaped reinforcing bars with the upper-end bars are fixed together with the bars. Characterized in that the lower end side is buried from the upper surface of the cast concrete and buried up to the lowest position of the positioning bar, and the rebar group is erected by hardening of the concrete. How to assemble. 3. A predetermined number of inverted U-shaped reinforcing bars are arranged substantially in parallel while maintaining a predetermined interval and at substantially the same height of a U-shaped bottom located at the upper end. Concrete cast into a slab or a beam part does not harden the inverted U-shaped basket-shaped reinforcing bar group formed by fixing with at least one positioning rod material that is substantially perpendicular to these at a fixed height. Before that, the lower end of the leg is buried from the upper surface of the cast concrete and buried up to the pair of positioning bars at the lowest position, and the inverted U-shaped basket-shaped reinforcing bar group is fixed by hardening of the concrete. How to assemble the concrete reinforcing steel net at the start-up section.