JP2002303043A - Method for fixing sleeve for pipe arrangement, and sleeve fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of fixing a sleeve for pipe arrangement, which can easily fix the sleeve in a space between a pipe hole formed in a steel reinforced concrete structure and reinforcements, at a location at which a necessary cover concrete thickness is secured, and to provide a sleeve fixture. SOLUTION: The sleeve fixture 10 is formed of a reinforcement-fitting portion 10a rigidly fitted onto the reinforcement 6 and a sleeve support portion 10b mounting the sleeve 2 for pipe arrangement thereon and supporting the same. The method for fixing the sleeve is carried out, by using the sleeve fixture 10, and the fixing location of the reinforcement fitting portion 10a with respect to the reinforcement 6 is adjusted, whereby the sleeve 2 for pipe arrangement is fixed onto the sleeve fixture 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and a fixture for fixing a sleeve for forming a pipe hole provided in a reinforced concrete structure at a predetermined interval from a reinforcing bar.

[0002]

BACKGROUND OF THE INVENTION Reinforced concrete buildings or members
When installing through holes for plumbing and wiring of plumbing equipment, electrical equipment, air conditioning equipment, etc., install a piping sleeve in a concrete formwork and then cast concrete into the formwork. A hole is formed, but in the past, since the piping sleeve was placed on the rebar,
The sleeve was placed close to the rebar, and sufficient cover thickness could not be secured. Therefore, a fixing method using a sleeve fixing member has been known in order to fix the sleeve at an accurate position and secure the cover thickness of the reinforcing bar.

In this fixing method, a sleeve is fixed to a concrete form by nailing, or suspended from a reinforcing bar with a wire or the like. There is also a method of fixing the sleeve to the reinforcing bar using a fixing bracket. For example, JP 2000
The fixing method disclosed in Japanese Patent No. 2483939 discloses a rebar engaging portion that is fixed by engaging with a rebar, a sleeve holding portion that holds a piping sleeve, and a reinforcer between the rebar engaging portion and the sleeve holding portion. , And a fixing bracket including a space holding portion that holds a predetermined space between the reinforcing bar and the piping sleeve.

[0004]

However, in the former fixing method, it takes time and effort to determine the exact position of the sleeve, and the sleeve moves when the concrete is poured into the concrete formwork. There was a problem that a necessary cover thickness could not be secured. In the latter case, when fixing the fixing bracket to the rebar, pliers and the like are required, so that the fixing operation is troublesome. In addition, since the fixture is composed of a plurality of members, there is a problem that the structure is complicated and the manufacturing cost is increased.

[0005]

The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.

That is, in the first aspect of the present invention, in the fixture for a piping sleeve, a reinforcing bar fitting portion for fitting and fixing to a reinforcing bar and a sleeve supporting portion for mounting and supporting the piping sleeve are made of synthetic resin. Are integrally molded.

According to a second aspect of the present invention, there is mainly provided a sleeve fixing member in which a reinforcing bar fitting portion for fitting and fixing to a reinforcing bar and a sleeve supporting portion for mounting and supporting a piping sleeve are integrally formed of synthetic resin. Each of the reinforcing bars was fixed to a plurality of reinforcing bars obliquely fixed to the reinforcing bar, and the sleeves were mounted on a plurality of sleeve fixing devices and fixed.

[0008]

Next, embodiments of the present invention will be described. FIG. 1 is a perspective view showing a state in which a piping sleeve is fixed using a sleeve fixing device according to the present invention, FIG. 2 is an enlarged perspective view of a fixing portion of the piping sleeve, and FIG. 3 is a sleeve fixing device of the first embodiment. FIG. 4 is a perspective view of the sleeve fixing device of the second embodiment, FIG. 5 is a perspective view of the sleeve fixing device of the third embodiment, and FIG. 6 is a perspective view of the sleeve fixing device of the fourth embodiment. FIG. 7 is a perspective view of the sleeve fixing device of the fifth embodiment.

A sleeve fixing device 10 according to the present invention can be used for supplying water, drainage, wiring, and other facilities to a concrete wall of a building as shown in FIG. 1 or a reinforced concrete structure such as a concrete foundation as shown in FIG. It is used for fixing the piping sleeve 2 in the concrete formwork 3,3 in order to provide a piping hole for arranging the piping.

In FIG. 1, the concrete form 3
3 are arranged opposite to each other, and a plurality of main reinforcing bars 4, 4...
・ It is arranged in the horizontal direction in parallel with 3. A plurality of rectangular stirrups or hoop rebars 5 perpendicular to the main rebar 4
.. Are arranged in a state of being erected at intervals in a direction parallel to the concrete forms 3, and are bound by wires, hooks or the like.

As shown in FIGS. 1 and 2, a pair of reinforcing reinforcing bars 6.6 formed in a substantially Z-shape between the reinforcing bars 5.5 are formed in an X-shape at positions where the pipe holes are provided. Are arranged and fixed to the main reinforcing bars 4, 4..., And are provided between the two sets of reinforcing reinforcing bars 6, 6 arranged in an X-shape through the plurality of sleeve fixing tools 10, 10 of the present invention. It is configured to support the sleeve 2. The sleeve fixtures 10 are attached to the front and rear reinforcing bars 6, 6 to support the piping sleeve 2 at a plurality of locations. Further, as shown in FIGS. 8 and 9, the piping sleeve 2 can be attached to the foundation. In this case, the reinforcing reinforcing bars 6 'and 6' are arranged opposite to each other to form a hexagonal space, and a sleeve fixing device is fixed to a lower portion in this space to fix the piping sleeve 2. Configuration. In this case, a sleeve fixing device 14, 14 of a fifth embodiment described later is used to stably fix the sleeve 2.

The piping sleeve 2 is formed in a cylindrical shape, traverses between the concrete forms 3, 3 and the openings at both ends thereof are brought into contact with the inner surfaces of the concrete forms 3, 3, respectively.
As shown in FIG. 2, a sleeve fixing tool 10 fitted and fixed to reinforcing steel bars 6, 6,... Then, concrete is poured into the inside of the concrete forms 3, 3 on which the main reinforcing bars 4, 4,... And the piping sleeve 2 are disposed, and the concrete hardens to form a wall having a piping hole. Is done.

Next, the specific structure of the sleeve fixing device will be described. Note that the sleeve fixtures of all the embodiments are integrally formed of synthetic resin. The sleeve fixing device 10 of the first embodiment will be described with reference to FIG. The sleeve fixing device 10
Are a sleeve supporting portion 10a for mounting and supporting the lower surface of the piping sleeve 2 and reinforcing steel bars 6, 6,...
And a reinforcing bar fitting portion 10b which is fitted and fixed to the fitting.

The reinforcing bar fitting portion 10b is formed in a tubular shape with a cross section of "Ω" shape, and is formed with outwardly bent barbs 10c at the open end of the reinforcing bar fitting portion 10b. By providing the barb 10c, the barb 1
Oc serves as a guide so that it can be easily fitted into the reinforcing steel bar 6.

The inner diameter R1 of the reinforcing bar fitting portion 10b
Is set smaller than the diameter R2 (FIG. 2) of the reinforcing steel bar 6 (R1 <R2). In this way, when the reinforcing bar fitting portion 10b is fitted into the reinforcing reinforcing bar 6, the open portion is opened due to the rigidity of the reinforcing bar fitting portion 10b, and the fitting is restored to the original state after being fitted into the reinforcing reinforcing bar 6. At this time, at this time, the inner surface of the reinforcing bar fitting portion 10b is fixed with the reinforcing reinforcing bar 6 interposed therebetween, so that it can withstand the impact generated when the concrete is poured into the inside of the concrete formwork 3. I have to.

The support portion 10a is formed in a rod shape with a circular cross section, and one end of the support portion 10a is axially located at the center of the outer peripheral surface of the rebar fitting portion 10b on the side opposite to the open side. It protrudes in the vertical direction (radial direction). The other end of the support portion 10a is formed as a concave curved surface corresponding to the outer peripheral curved surface of the piping sleeve 2, and is configured to be in contact with and supported. Then, the support portion 10
The length L of a is set to be the cover thickness.

Next, the sleeve fixing device 11 of the second embodiment will be described with reference to FIG. The sleeve fixture 11 is
As shown in FIG. 4, as in the previous embodiment, a sleeve supporting portion 11a for supporting the piping sleeve 2 and a reinforcing bar fitting portion fitted and fixed to the reinforcing steel bars 6, 6,... 1
1b.

The reinforcing bar fitting portion 11b is formed in a tubular shape with a rectangular cross section, and has an open top. In this open portion, bent backs 11c are formed in the same manner as described above. Thus, the barbs 11c can be easily fitted into the reinforcing steel bar 6 as a guide. Then, assuming that the length of one side of the reinforcing bar fitting portion 11b is R1, the diameter is set smaller than the diameter R2 (FIG. 2) of the reinforcing reinforcing bar 6 (R1 <R2) as described above, and the inner surface of the reinforcing bar fitting portion 11b is reinforced. The fixing bar 6 is sandwiched and fixed.

The support portion 11a is formed in a rod shape having a rectangular cross section, and one end of the support portion 11a protrudes from the outer peripheral surface of the reinforcing bar fitting portion 11b on the side opposite to the open side. The other end of the support portion 11a is formed in a planar shape so as to contact and support the outer peripheral surface of the piping sleeve 2.

Next, a description will be given of a sleeve fixing device 12 according to a third embodiment with reference to FIG. The sleeve fixture 12 is
As shown in FIG. 5, a sleeve support portion 12a that supports the piping sleeve 2 and a reinforcing bar fitting portion 12b that is fitted and fixed to the reinforcing steel bars 6, 6,... .

The reinforcing bar fitting portion 12b is formed in a cylindrical shape with a substantially "C" -shaped cross section, and is configured to be open on the side. A barb 12c is formed on this open side to facilitate reinforcement. It can be fitted into the reinforcing bar 6. The support portion 12a is formed in a rod shape having a circular cross section as in the first embodiment, and one end of the support portion 12a is provided so as to protrude from the upper outer surface of the reinforcing bar fitting portion 12b.

Referring to FIG. 6, the sleeve fixing device 13 of the fourth embodiment will be described. As shown in FIG. 6, the sleeve fixing member 13 includes a sleeve support portion 13a for supporting the piping sleeve 2 and a reinforcing bar fitting portion that is fitted and fixed to the reinforcing steel bars 6, 6,... 13b.

The reinforcing bar fitting portion 13b is configured in the same manner as in the first embodiment. The supporting portion 13a is formed in a cross-shaped rod shape, and one end of the supporting portion 13a is connected to the open side of the reinforcing bar fitting portion 13b. As a configuration protruding from the opposite outer surface, the cross-section is made cross-shaped to increase rigidity.

Referring to FIG. 7, a description will be given of a sleeve fixing device 14 according to a fifth embodiment. As shown in FIG. 7, the sleeve fixing member 14 includes a sleeve supporting portion 14a for supporting the piping sleeve 2 and a reinforcing bar fitting portion which is fitted and fixed to the reinforcing steel bars 6, 6,... 14b.

The reinforcing bar fitting portion 14b and the support portion 14a are constructed in substantially the same manner as in the first embodiment, and a rectangular curved plate 14d in a plan view is provided at the tip of the support portion 14a. The curved plate 14d is formed of a plate having a curved surface corresponding to the outer peripheral shape of the piping sleeve 2, and is configured to support the piping sleeve 2 with the surface.

With this configuration, the sleeve fixing members 10, 11, 12, 13, and 14 are connected to the reinforcing bar fitting portion 1.
0b / 11b / 12b / 13b / 14b is reinforced with reinforcing steel 6
Can be fixed simply by fitting into the support portion 10a.
It can be set simply by placing the piping sleeve 2 on the tips of 11a, 12a, 13a and 14a.

At this time, the piping sleeve 2 and the reinforcing steel bar 6
Between the support portion 10a
11a, 12a, 13a, and 14a. Even if concrete is poured into the concrete frame 3, since the piping sleeve 2 is supported at a plurality of locations, there is no displacement and the cover thickness is secured. It should be noted that the present invention is not limited to the above embodiment, and the support portions 10a, 11a, 12a,
13a, 14a and rebar fitting portions 10b, 11b, 12b
13b and 14b can be appropriately combined and configured.

[0028]

The present invention is configured as described above.
The following effects are obtained. That is, as set forth in claim 1, in the fixture for a piping sleeve, a reinforcing bar fitting portion for fitting and fixing to a reinforcing bar and a sleeve supporting portion for mounting and supporting the piping sleeve are made of synthetic resin. Since they are integrally formed, the sleeve fixing device can be configured at a low cost with a simple configuration. Then, the piping sleeve can be easily fixed at an accurate position, and a necessary cover thickness for the reinforcing bar can be secured. Also, the sleeve can be easily fixed.

According to a second aspect of the present invention, there is provided a sleeve fixing member in which a reinforcing bar fitting portion for fitting and fixing to a reinforcing bar and a sleeve supporting portion for mounting and supporting a piping sleeve are integrally formed of synthetic resin. Since it is fixed to a plurality of reinforcing bars diagonally fixed to the main reinforcing bar and placed on a plurality of sleeve fixing devices and fixed, the sleeve fixing device can be easily fixed to the reinforcing bar, and construction work can be performed. Can be performed smoothly and quickly.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a piping sleeve is fixed using a sleeve fixing device according to the present invention.

FIG. 2 is an enlarged perspective view of a fixed portion of a piping sleeve.

FIG. 3 is a perspective view of the sleeve fixing device of the first embodiment.

FIG. 4 is a perspective view of a sleeve fixing device according to a second embodiment.

FIG. 5 is a perspective view of a sleeve fixing device according to a third embodiment.

FIG. 6 is a perspective view of a sleeve fixing device according to a fourth embodiment.

FIG. 7 is a perspective view of a sleeve fixing device according to a fifth embodiment.

FIG. 8 is a perspective view when a sleeve is provided on a foundation.

FIG. 9 is an enlarged perspective view of the sleeve mounting portion.

[Explanation of symbols]

2 Piping sleeve 6 Reinforcing bar 10 ・ 11 ・ 12 ・ 13 ・ 14 Sleeve fixing device 10a ・ 11a ・ 12a ・ 13a ・ 14a Sleeve support 10b ・ 11b ・ 12b ・ 13b ・ 14b Rebar fitting

Claims (2)

[Claims] A reinforcing bar fitting portion fixedly fitted to a reinforcing bar;
A fixing member for a piping sleeve, which is integrally formed of a synthetic resin with a sleeve supporting portion for mounting and supporting the piping sleeve. 2. A reinforcing bar fitting portion for fitting and fixing to a reinforcing bar,
The sleeve fixing parts, on which the sleeve for supporting the piping is placed and supported, are integrally molded with synthetic resin.Then, the sleeve fixing parts are fixed to a plurality of reinforcing rebars, which are fixed diagonally to the main rebar. A method for fixing a piping sleeve that is mounted and fixed.