JPH07224973A - Sleeve for protection of penetration pipes in fireproof compartments and penetration method using the same - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a construction method and a sleeve that can be used therefor, which do not require hole closing with mortar when a pipe or the like is penetrated through a fireproof section formed by concrete pouring. [Structure] A sleeve S is formed by providing a non-combustible pipe 20 in a penetrating state on a non-combustible plate 10. Further, the non-combustible plate 10 is detachably attached to the dam plate A of a concrete pouring form such as a fireproof compartment, and the non-combustible pipe 20 is provided so as to penetrate the form. After that, concrete is poured, and the dam plate A is removed from the noncombustible plate 10 after the casting, and the mold is removed to form sleeve holes B for through pipes in the concrete portion.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sleeve for penetrating a fireproof compartment or the like while protecting pipes and the like, and a method of using the sleeve.

[0002]

2. Description of the Related Art Refrigerant pipes, power lines, communication cables, or plastic pipes through which various wirings are inserted are installed in a fireproof section of a building. In these constructions, a paper sleeve is provided in advance on a concrete pouring formwork, the paper sleeve is removed after concrete pouring, and the concrete fire prevention section or the like is penetrated,
A so-called sleeve hole is formed. Thereafter, a pipe or the like, for example, the refrigerant pipe or the power line is penetrated through the sleeve hole. In particular, in the fireproof section, construction standards are strictly defined in consideration of safety, and for pipes and the like, the pipe material within 1 m before and after the fireproof section through which it penetrates must be made of non-combustible material.
At the site, cover the pipes etc. with a sheath pipe protruding from the fireproof compartment by the specified length, fill rock wool etc. between the sheath pipe and the pipe etc., and use mortar etc. between the sheath pipe and the fireproof compartment. It is completely filled.

On the other hand, conventional sleeves include, in addition to the paper sleeves, a cylindrical sleeve made of iron plate, a slide type sleeve made of iron plate whose sleeve length can be changed, and further, in cast concrete. There is a steel pipe sleeve with a brim that is embedded. These sleeves are appropriately selected and used according to the construction situation.

[0004]

However, in the method using the paper sleeve as described above, after the sheath pipe is penetrated through the fireproof compartment or the like, the space between the sheath pipe and the fireproof compartment or the like must be secured with mortar or the like. The laborious work of filling the void was necessary. When the work space is small, it is necessary for the operator to work in a cramped position for a long time, which is a tough task for the operator. On the other hand, a sleeve embedded in concrete, such as a conventional steel pipe sleeve with a brim, does not need to fill the void between the sleeve and the concrete part with mortar, but when forming the formwork, the sleeve penetrates so that the poured concrete does not leak. It was troublesome to form a circular hole in the dam plate that was exactly aligned with the cross section.

Further, in the case of a steel pipe sleeve with a collar,
Since the brim part is embedded inside the concrete part, it took time and effort to fix the sleeve to the formwork so that the brim position would not be displaced by the concrete when placing. Further, since the conventional sleeve has a length that is almost equal to the width of the beam or wall that normally penetrates it, it cannot be used as a sheath tube as it is in a fireproof section where disaster prevention standards are established. .

On the other hand, in recent years, as an alternative to the above-mentioned mortar, for example, a dedicated member such as one in which a large number of small block-like ones are filled while being combined, or one which is expanded by heating after filling to close the void is commercially available. However, it has a problem that it takes much more work than mortar, or it is expensive, and it has not been actively used on site. Furthermore, although the pipe itself is commercially available that has been certified for disaster prevention performance, when using this, a sheath pipe is not required, but the mortar closing work cannot be avoided. In addition, this certified product is expensive, and in some situations, certified products and non-certified products may coexist, making it rather difficult to work.

Therefore, in view of the above problems, the present invention is a construction method and a sleeve which can be used therefor in which a pipe or the like is not required to be filled with mortar when a pipe or the like is penetrated through a fireproof section formed by placing concrete. For the purpose of providing.

[0008]

In order to achieve the above-mentioned object, in the invention according to claim 1, in order to form a through hole for piping in a concrete portion such as a fireproof section, a concrete casting mold is used. A sleeve provided in advance in the frame,
The sleeve is composed of a non-combustible plate and at least one non-combustible pipe, the non-combustible pipe is provided in the non-combustible plate in a penetrating state, and the non-combustible plate is attached to and detached from the weir plate as a part of the weir plate forming the mold. It is possible.

According to the invention of claim 2, the invention of claim 1
Two non-combustible plates described in 1 are arranged facing each other at a predetermined interval.
Further, in the invention according to claim 3, the non-combustible plate according to claim 1 or 2 is an iron plate, and the non-combustible pipe is an iron pipe.

The invention according to claim 4 is a method for forming a sleeve hole for piping in a concrete portion such as a fireproof section formed by placing concrete in a formwork, which penetrates the noncombustible plate. The non-combustible pipe was attached to the dam plate of the mold so that the non-combustible pipe was located in a penetrating state in the concrete part after molding, and the non-combustible plate was used as a part of the dam plate of the mold. While pouring concrete, the weir plate is removed from the non-combustible plate after the pouring, and the mold is removed, and the non-combustible pipe is provided in the concrete portion in a penetrating state. Further, in the invention according to claim 5, the non-combustible plate according to claim 4 is an iron plate, and the non-combustible pipe is an iron pipe.

[0011]

In the present invention, since the sleeve is composed of a non-combustible plate and a non-combustible pipe, a non-combustible plate and a non-combustible pipe conforming to the disaster prevention standard can be used to protect pipes and the like that penetrate through the fireproof compartments in the event of a disaster. It can be done effectively. In particular, by adjusting the protruding length of the non-combustible pipe from the non-combustible plate to a disaster prevention standard or the like in a factory or the like in advance, it can be used as it is in a fireproof section or the like. In addition, the non-combustible pipe is installed in the non-combustible plate in a penetrating state, and the non-combustible plate can be attached to and detached from the weir plate of the molding frame such as a fireproof compartment. Thus, the non-combustible pipe can be set in advance at a position where the non-combustible pipe penetrates the concrete portion after molding.

Further, since the non-combustible plate can be attached to and detached from the weir plate as a part of the weir plate of the form, the non-combustible plate is kept in a penetrating state through the opening of the weir plate of the form while the non-combustible plate is kept in the weir plate. It is possible to close the concrete so that it does not overflow from the gap between the opening and the noncombustible pipe. Further, since the non-combustible plate can be attached to and detached from the dam plate of the form, the dam plate can be removed from the non-combustible plate when the mold is removed after the concrete is poured. On the other hand, since the non-combustible pipe is filled with concrete by casting, it is possible to eliminate the conventional closing work with mortar.

Therefore, a pipe such as a refrigerant pipe is inserted into the non-combustible pipe fixed as described above, and rock wool or the like is filled around the pipe as in the conventional case, so that the pipe can be installed in a fireproof compartment or the like. It can be penetrated while being protected. In addition, by providing multiple non-combustible pipes in the non-combustible plate in a penetrating state, multiple sleeves can be formed with the time and effort of one construction, and it is possible to construct multiple pipes that cannot penetrate the same sleeve at the same time. can do. Further, by forming two non-combustible plates facing each other with a predetermined interval therebetween, through holes are formed in the form of a wall or the like formed by facing two barrier plates in the same manner as above. can do.

Further, by making the non-combustible plate an iron plate and the non-combustible pipe an iron pipe, it is possible to sufficiently secure the strength of the non-combustible plate and the non-combustible pipe. In addition, according to the method of the present invention using the sleeve having the above-mentioned configuration, the pipes can be piped to a concrete fireproof section or the like without the conventional additional work such as mortar closing work and sheath pipe installation work. It is possible to effectively provide a sleeve hole that can be safely inserted.

[0015]

Embodiments of the present invention will be described with reference to the drawings. (Embodiment 1) The non-combustible plate 10 of the sleeve S of the present invention is an iron plate formed in a rectangular shape. At the center of the rectangular non-combustible plate 10, a through hole 10a is provided that matches the diameter of a non-combustible tube 20 described later. Further, the non-combustible plate 1 is provided on the periphery of the through hole 10a.
A tubular welding side wall 11 perpendicular to 0 is formed. The non-combustible pipe 20 is penetrated through the through hole 10a, and the outer peripheral side surface of the non-combustible pipe 20 is brought into contact with the inner surface of the welding side wall 11 and welded, so that the non-combustible pipe 20 is stably fixed to the non-combustible plate 10. Further, at the four corners of the non-combustible plate 10, the non-combustible plate 10 is detachably attached to the weir plate A of the form of the slab 30 in the fireproof section by nails 12.
In this embodiment, a nail fastening hole 1 is provided so that it can be temporarily fastened with
3 is provided.

Further, the non-combustible plate 10 can be used as a part of the dam plate A by holding the non-combustible pipe 20 which will be described later in a penetrating state in the opening part a of the dam plate A of the formwork and closing the opening part a. Thus, it has such a thickness that it can withstand the pouring pressure of concrete. As the iron plate as the non-combustible plate 10 used in this embodiment, either an iron plate made of cast iron or an iron plate made of steel can be used. Further, as the non-combustible plate 10, a cement plate or the like may be used instead of the iron plate.

On the other hand, as the non-combustible pipe 20, an iron pipe is used in this embodiment. The diameter of the iron pipe may be appropriately selected so that the iron pipe can be used as a protective sleeve and the pipe can be passed therethrough. Further, the length of the non-combustible pipe 20 is, in this embodiment,
One side of the non-combustible plate 10 is 100 in accordance with the fire protection standard.
0 mm, the thickness of the concrete part on the other side is 1000
It is set to a length including mm. This is in conformity with this standard because it is required to protect the pipe with a noncombustible material within 1 m from the penetration part. However, the length of the non-combustible pipe 10 is not limited to the above numerical value, and may be freely set when used in a place where the above standards are unnecessary.

Further, in the present embodiment, one incombustible pipe 20 is penetrated through the incombustible plate 10, but a plurality of incombustible pipes 20 may be provided if necessary. In FIG. 2, two incombustible tubes are provided. Further, in this embodiment, the straight non-combustible pipe 20 is used so as to vertically penetrate the non-combustible plate 10. However, basically, a bent pipe is used and the mounting angle with the non-combustible plate 10 is set. Angles other than right angles may be used. Further, as the iron pipe as the non-combustible pipe 20 used in this embodiment, either an iron pipe made of cast iron or an iron pipe made of steel can be used. Further, other than the iron pipe, for example, an asbestos pipe or the like may be used.

(Embodiment 2) The sleeve S'of this embodiment is
Unlike the first embodiment, two non-combustible plates 10 are provided in parallel so that they can be used for a mold formed by arranging two barrier plates A facing each other for walls of a fireproof compartment ( (Figure 3).
Two incombustible plates 10 having the same shape and having a through hole 10a in the center thereof which is fitted to the incombustible pipe 20 are arranged in parallel facing each other in accordance with the thickness of the wall C of the fireproof section to be formed. Further, one incombustible tube 20 is in a penetrating state through the through holes 10a of the two incombustible plates 10 as in the first embodiment.
It is fixed via a welding side wall 11 at the peripheral edge.

The two non-combustible plates 10 of the sleeve S'are sandwiched inside and the two openings a of the two barrier plates A facing each other.
Further, it is possible to temporarily use the non-combustible pipe 20 while holding the non-combustible pipe 20 in a penetrating state to form a mold for use. Further, a plurality of noncombustible pipes may be provided as in the first embodiment. Further, basically, by providing two or more non-combustible plates, it is possible to form a sleeve hole that penetrates a plurality of fireproof partition walls at once.

(Embodiment 3) An embodiment of the present invention is a method of forming a sleeve hole B for piping in the slab 30 by using the sleeve S having the structure of the above-mentioned embodiment 1. Slab 3
Weir plate A of formwork for casting concrete to form 0
In addition, a rectangular opening a, which is slightly larger than the bore cross section of the sleeve hole B to be used for forming, is provided in accordance with the insertion position of the pipe 40 of the slab 30 to be formed. Set the non-combustible pipe 20 to the opening a.
The non-combustible plate 10 is applied from the inner side surface of the mold while being inserted into the non-combustible plate 10, and the non-combustible plate 10 and the dam plate A are temporarily fixed with the nails 12.

Then, concrete is poured into the formwork. If the concrete becomes stronger after pouring,
The barrier plate A is removed from the noncombustible plate 10 and the entire mold is removed. As a result, the sleeve hole B is placed in the cast concrete portion of the fireproof compartment.
Is formed. After that, necessary pipes 40 and the like are inserted into the sleeve holes B, and rock wool 50 and the like are appropriately filled around the pipes 40 and the like to perform a pipe processing for penetration.

[0023]

According to the present invention, the non-combustible plate having the non-combustible pipe in the penetrating state attaches the sleeve to the weir plate of the formwork and simultaneously closes the gap between the weir plate and the non-combustible pipe. Unlike the above, the sleeve can be easily attached to the dam plate without special consideration for the protrusion of the concrete between the sleeve and the dam plate portion. In addition, since it is possible to form a sleeve hole that complies with disaster prevention standards with non-combustible fireproof materials at the same time as concrete pouring in a fireproof section, etc. As compared with the case of performing the above, the work of closing the hole with mortar or the like is not necessary, and labor can be saved in this work. This simplifies the work of attaching the sleeve to the barrier plate, and also shortens the work period of the entire work of penetrating the pipe into the fireproof compartment or the like. Especially when multiple through holes are required to penetrate the fireproof compartment, etc.,
In the present invention, since a plurality of incombustible pipes can be provided in advance on the incombustible plate, the construction is easier than when a plurality of single sleeves are used.

[Brief description of drawings]

FIG. 1 is a perspective view (a) showing a mounting state of a sleeve of the present invention and a mold for slab molding. Sectional drawing (b) which showed the state which mounted the sleeve on the slab formation surface of a formwork, and poured concrete. Sectional drawing which showed the state which penetrated the piping using a sleeve (c).

FIG. 2 is a perspective view of a sleeve provided with two non-combustible tubes (a).
Sectional drawing (b) at the time of forming a slab using the sleeve which provided two noncombustible pipes.

FIG. 3 is a perspective view (a) of a sleeve having two non-combustible plates. Sectional explanatory drawing (b) which shows the state which attached the sleeve between the two facing dam plates for wall formation.

[Explanation of symbols]

 10 non-combustible plate 20 non-combustible pipe 30 slab 40 piping 50 rock wool A weir plate B sleeve hole S sleeve S'sleeve

Claims (5)

[Claims] 1. A sleeve provided in advance in a formwork for placing concrete in order to form a through hole for piping in a concrete portion such as a fireproof compartment, the sleeve being a noncombustible plate and at least one noncombustible plate. A fireproof section comprising a pipe, the noncombustible pipe being provided in a penetrating state on the noncombustible plate, and the noncombustible plate being detachable from the weir plate as a part of the weir plate forming the formwork. Sleeve for protecting through pipes such as. 2. A sleeve for protecting a through pipe in a fireproof compartment or the like according to claim 1, wherein two nonflammable plates are arranged facing each other at a predetermined interval. 3. The sleeve for protecting a through pipe in a fireproof compartment or the like according to claim 1, wherein the non-combustible plate is an iron plate and the non-combustible pipe is an iron pipe. 4. A method for forming a sleeve hole for piping in a concrete part such as a fireproof section formed by placing concrete on a formwork, which comprises: The non-combustible plate is attached to the dam plate of the form so that it is located in a penetrating state in the concrete part, and the concrete is poured while using the non-combustible plate as a part of the dam plate of the form, After that, the weir plate is removed from the non-combustible plate and demolded, and the non-combustible pipe is provided in a concrete portion in a penetrating state. A penetration method using a sleeve for protecting a penetration pipe such as a fireproof partition wall. 5. The penetration method using a sleeve for protecting penetration pipes in a fireproof compartment or the like according to claim 4, wherein the noncombustion plate is an iron plate and the noncombustion pipe is an iron pipe.