JP2001107508A - Hole reinforcing member and hole reinforcement structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hole reinforcing member and a hole reinforcement structure which can easily and surely reinforce a through hole such as a waste hole formed in a floor slab. SOLUTION: This hole reinforcing member 1 includes a reinforcing member body 5 connected to slab bars 4, etc., of a floor slab 2, and oblique reinforcement bar 6, etc., which are provided on the reinforcing member main body 5 and obliquely intersect the slab bars 4, etc., when the reinforcing member body 5 is placed on the slab bars 4, etc., the floor slab 2, and an opening part 7 which is formed in the substantially central area of the reinforcing member body 5 and has the size substantially equal to or a little larger than a through hole 3. Accordingly, the hole reinforcing member 1 can easily and surely reinforce the through hole 3 without a number of reinforcing bars E by arranging the reinforcing member body 5 on the slab bars 4 so that the opening part 7 is laid along the periphery of the through hole 3 of slab bars 4, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hole reinforcing member for reinforcing a through hole such as a useless hole formed in a floor slab, and a hole reinforcing structure using the hole reinforcing member.

[0002]

2. Description of the Related Art For example, as a formwork material for concrete casting used when constructing a concrete building, a formwork for columns, a formwork for walls, a formwork for floor slabs, a formwork for beams,
Alternatively, there is a pipe support, etc., and in a building with a multi-story structure, these formwork materials used for placing concrete on the lower floor are transferred to the upper floor and diverted to placing concrete on this upper floor. I have.

[0003] Among such formwork materials, the formwork for columns, the formwork for wall slabs, and the like require only a short period of time for curing the concrete of the wall. Since the transportation to the upper floor is possible in a short period of time, the transportation can be performed in accordance with the start of the work on the upper floor.

On the other hand, in the case of floor slab formwork, beam formwork, pipe support and the like, the required strength of these slab portions is high and a long curing period (for example, about 4 weeks) is required. For this reason, the work on the upper floor is performed during the elapse of this period, and after the elapse of the period, the work on the upper floor is interrupted, and the formwork material remaining on the lower floor is transferred to the upper floor. Like that.

[0005] In order to quickly transfer such a form material to an upper floor, conventionally, as shown in FIG.
When the floor slab 2 is cast, a useless hole (through hole) 3 is formed in the floor slab 2 to allow the upper floor and the lower floor to communicate with each other.
The building material is constructed by inserting the form material from the useless hole 3 and transferring it to a worker on an upper floor, and performing this operation while sequentially moving to the upper floor.

[0006] When the above-mentioned useless hole 3 is formed in the floor slab 2, the slab streaks 4 located around the useless hole 3 are formed.
, A plurality of reinforcing bars E are arranged vertically and horizontally and diagonally, and the reinforcing bars E are connected to the slab bars 4 by binding wires to reinforce the periphery of the useless hole 3. , Concrete was cast on the formwork of the floor slab 2.

[0007]

By the way, in order to arrange a plurality of reinforcing bars in the vertical and horizontal directions and diagonally around the useless hole as described above, a large number of reinforcing bars must be prepared. Not only was it difficult to handle, but also the arrangement work was very time-consuming.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a hole reinforcing member and a hole reinforcing structure capable of easily and surely reinforcing a through hole such as a useless hole formed in a floor slab. The purpose is.

[0009]

In order to achieve the above object, a hole reinforcing member 1 according to a first aspect of the present invention is vertically penetrated into a floor slab 2 as shown in FIGS. A hole reinforcing member 1 for reinforcing the periphery of the through hole 3 formed as described above, wherein a reinforcing member main body 5 connected to the slab streaks 4 of the floor slab 2 and a substantially central portion of the reinforcing member main body 5 are provided. An opening 7 which is formed and has a size substantially the same as or slightly larger than that of the through hole 3 is provided.

The through hole 3 is used, for example, when an operator enters or exits or transports the formwork material from the lower floor A to the upper floor B. The through hole 3 is a necessary minimum in consideration of repair after use. A hole having a minimum size is desirable, and is formed in the floor slab 2 to be constructed by using a through hole form 13 so as to penetrate the upper and lower floors.

The slab bars 4 are steel bars embedded in concrete to resist tensile force in a reinforced concrete structure. For example, the slab bars 4 are arranged horizontally, vertically and horizontally in a reinforced concrete slab. Also,
The slab muscles 4 may have a structure arranged in one layer, or may have a structure arranged in two or three or more layers.

The reinforcing member main body 5 is placed on the slab muscles 4 arranged in the slab around the through hole 3 and is fixed to the slab muscles 4 by tying wires. The through-hole 3 is reinforced, and for example, a plate-shaped or mesh-shaped one obtained by hollowing out the steel plate so as to leave a large number of band-shaped reinforcing bands 20.

The opening 7 is provided in the reinforcing member main body 5.
It is a hole provided along the shape of the through hole 3. For example, when the through hole 3 of the floor slab 2 is rectangular in a plan view, it is formed in a rectangular shape.

According to the hole reinforcing member of the first aspect, since the reinforcing member main body 5 and the opening 7 formed at a substantially central portion of the reinforcing member main body 5 are provided, the slab streaks 4 are provided. , The reinforcing member main body 5 is arranged so that the opening 7 extends along the periphery of the through hole 3 of the slab streaks 4, and then the reinforcing member main body 5 is connected to the slab streaks 4. Therefore, without using many reinforcing bars E ...
The through hole 3 can be easily and reliably reinforced.

The hole reinforcing member according to claim 2 is, for example, shown in FIG.
In the hole reinforcing member according to claim 1, when the reinforcing member main body 5 is mounted on the slab streaks 4 of the floor slab 2, the reinforcing member main body 5 has Are provided with diagonal reinforcing bars 6 which cross obliquely with respect to.

The diagonal reinforcing bars 6 are provided on the reinforcing member main body 5 outside the corners of the opening 7 so as to obliquely intersect with the slab muscles 4. It is desirable that a plurality of such members be provided on the outside in parallel.

According to the hole reinforcing member of the second aspect, by arranging the reinforcing member main body 5 on the slab streaks 4 of the floor slab 2, the diagonal reinforcing bars 6 are arranged.
To the oblique reinforcing bars 6
By connecting the slab muscles 4 to the slab muscles 4, the through-holes 3 are reinforced in an oblique direction, so that the through-holes 3 can be reinforced more strongly.

The hole reinforcing structure according to claim 3 is, for example, shown in FIG.
As shown in FIG. 5 to FIG. 5, the through hole 3 formed in the floor slab 2 is provided with the hole reinforcing member 1 according to claim 1 or 2,
30. The hole reinforcing member is strengthened by an opening 30. The hole reinforcing members 1 and 30 have openings 7 on the slab streaks 4.
Are arranged along the periphery of the through hole 3 of the floor slab 2, and the hole reinforcing members 1, 30 and the slab streaks 4
... are connected.

According to the hole reinforcing structure of the third aspect, the hole reinforcing members 1 and 30 are arranged along the opening 7 around the through hole 3 formed in the floor slab 2. Are arranged, and the hole reinforcing members 1 and 30 and the slab streaks 4 are arranged.
Are connected, the through hole 3 can be easily and reliably reinforced without using a large number of reinforcing bars E.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a hole reinforcing member according to the present invention will be described below with reference to FIGS.

As shown in FIGS. 1 and 3, the hole reinforcing member 1 of the present embodiment reinforces the periphery of a through hole 3 formed in a floor slab 2 by penetrating vertically. A reinforcing member main body 5 connected to the slab streaks 4 of the slab 2, and a reinforcing member main body 5 provided on the reinforcing member main body 5, and when the reinforcing member main body 5 is placed on the slab streaks 4 of the floor slab 2, An oblique reinforcing bar 6 diagonally intersecting with the slab bars 4 and an opening 7 formed substantially at the center of the reinforcing member main body 5 and having a size substantially the same as or slightly larger than the through hole 3 are provided. It is configured.

As shown in FIGS. 3 to 5, the through holes 3 are previously formed in the floor slab 2 so as to penetrate through the lower floor A and the upper floor B, and are formed in a rectangular shape in advance. When a building having a multi-story structure is to be implemented, pillars 8 provided on the lower floor A, walls not shown, and these pillars 8
.. And the floor slab 2 which is provided on the wall and constitutes the upper floor B, and the floor slab 2
..., the wall form, the beam form, and the floor slab form 12 are installed in a state as shown in FIGS. 3 and 4, and concrete is poured into these forms after installation. Is formed. The through-hole 3 is formed so as to open a part of the floor slab form 12, and the through-hole form 13 is mounted so as to be orthogonal to the floor slab form 12 and is driven. Is formed by damming the concrete to be formed with the through-hole formwork 13.

The slab muscles 4 are, as shown in FIG.
At a position below the center of the floor slab 2 to resist the pulling force, the floor slab 2 excluding the through hole 3
It is arranged horizontally, vertically and horizontally and in a single layer. Further, the hole reinforcing member 1 arranges the opening 7 on the slab streaks 4 arranged around the through hole 3 so as to be along the periphery of the through hole 3 of the floor slab 2. Have been.

As shown in FIG. 1, the reinforcing member main body 5 is provided with the opening 7 substantially at the center of a rectangular steel plate. Three strip-shaped reinforcing strips 20 arranged in parallel with the four sides of the rectangular steel sheet are provided at three corners D of the rectangular steel sheet obliquely intersecting the slab streaks 4. The diagonal reinforcing bars 6 ...
Are provided so as to be arranged. The opening 7 is
The reinforcing member main body 5 is provided in a rectangular shape along the rectangular through hole 3 substantially at the center thereof, and is formed to have substantially the same size as the through hole 3 or a slightly larger opening.

Next, a method and structure for reinforcing the through hole 3 formed in the floor slab 2 with the hole reinforcing member 1 will be described. First, the opening 7 of the hole reinforcing member 1 is arranged on the slab lines 4 so as to be along the periphery of the through hole 3 of the floor slab 2. Thereafter, the band-shaped reinforcing band portions 20 of the reinforcing member main body 5 and the oblique reinforcing members 6 are fixed to the slab streaks 4 using binding wires, so that the hole reinforcing member 1 and the slab streaks 4 are fixed. ... is connected. The concrete is cast on the floor slab formwork 12 to reinforce the floor slab 2 and the cast concrete is blocked by the through-hole formwork 13 so that the penetration is prevented. Hole 3
Are formed, and the hole reinforcing member 1 is buried in concrete while being connected to the slab streaks 4.

Therefore, in the hole reinforcing structure using the hole reinforcing member of the present embodiment, the hole reinforcing member 1 extends along the opening 7 around the through hole 3 formed in the floor slab 2. Are arranged and the hole reinforcing members 1 and the slab studs 4 are connected by binding wires. Therefore, unlike the related art, the through holes 3 are easily and securely reinforced without using a large number of reinforcing studs E. Can be performed, and the labor of bar arrangement work can be reduced.

The slab bars 4 may be arranged horizontally and vertically in two layers below the center of the floor slab 2, as shown in FIG. In this case, the hole reinforcing member 1 is arranged so as to be sandwiched between the slab streaks 4 arranged in two layers.

The hole reinforcing member 1 may be formed in a mesh as shown in FIG. The mesh-type hole reinforcing member 30 includes a mesh-shaped reinforcing member main body 31 connected to the slab streaks 4 of the floor slab 2 and the reinforcing member main body 31 is mounted on the slab streaks 4 of the floor slab 2. When placed, the diagonal reinforcing bars 32 obliquely intersect with the slab streaks 4, and the end portions 33 provided on both short sides;
The reinforcing member main body 31 is formed at a substantially central portion, and includes the opening 7 having substantially the same size as or a slightly larger size than the through hole 3.

Such a hole reinforcing member 30 can be used in the same manner as the hole reinforcing member 1 and the through hole 3
Can be easily reinforced, and the labor for the arrangement work can be reduced.

[0030]

As described above, according to the hole reinforcing member of the first aspect, the reinforcing member main body and the opening formed at the substantially central portion of the reinforcing member main body are provided. By arranging the reinforcing member main body on the slab muscle so that the opening extends along the periphery of the through hole of the slab muscle, and connecting the reinforcing member main body to the slab muscle, a large number of reinforcing muscles are provided. The through hole can be easily and surely reinforced without using a hole.

According to the hole reinforcing member of the second aspect, the same effect as that of the first aspect can be obtained.
By arranging the reinforcing member main body on the slab streaks of the floor slab, the oblique reinforcing bars cross obliquely with respect to the slab streaks, so that the oblique reinforcing bars and the slab streaks are connected. Thereby, the through-hole is reinforced in the oblique direction, so that the through-hole can be reinforced more firmly.

According to the hole reinforcing structure of the third aspect, the hole reinforcing member is arranged around the through hole formed in the floor slab along the opening, and the hole reinforcing member is provided. Since the members and the slab streaks are connected by the binding wires, unlike the related art, the through holes can be easily and reliably reinforced without using a large number of reinforcing streaks.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a hole reinforcing member according to the present invention and showing a plate-like hole reinforcing member formed by hollowing out a large number of band-like reinforcing bands on a steel plate.

FIG. 2 is a perspective view showing another example of the hole reinforcing member according to the present invention, showing the hole reinforcing member formed of a mesh-shaped reinforcing member main body.

FIG. 3 is a longitudinal sectional view showing an example of a hole reinforcing structure according to the present invention.

FIG. 4 is a perspective view showing an example of a hole reinforcing structure according to the present invention.

FIG. 5 is a longitudinal sectional view showing another example of the hole reinforcing structure according to the present invention.

FIG. 6 is a perspective view showing an example of a conventional hole reinforcing structure.

[Explanation of symbols]

 1.30. Hole reinforcement member 2. Floor slabs 3. Through hole 4. Slab muscle 5.31. Reinforcing member body 6.32. Diagonal reinforcement 7. Aperture

Claims (3)

[Claims] 1. A hole reinforcing member for reinforcing a periphery of a through hole formed vertically through a floor slab, the reinforcing member main body being connected to a slab muscle of the floor slab, and the reinforcing member main body. A hole reinforcing member formed substantially in the center of the hole and having an opening having a size substantially the same as or slightly larger than the through hole. 2. The hole reinforcing member according to claim 1, wherein the reinforcing member main body, when the reinforcing member main body is mounted on a slab streak of a floor slab, obliquely crosses the slab streak obliquely. A hole reinforcing member provided with streaks. 3. A through hole formed in a floor slab.
Or a hole reinforcement structure reinforced by the hole reinforcement member according to 2, wherein the hole reinforcement member is disposed on the slab streak so that the opening thereof extends along the periphery of the through hole of the floor slab, A hole reinforcing structure, wherein the hole reinforcing member and the slab streak are connected.