JPH09209567A - Slab through pipe execution tool and slab structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate work by burying a tubular body larger in diameter than a through pipe and having a blocking plate storage chamber at an end section in a slab, and burying the gap with mortar after a pipe is inserted into the tubular body when forming a raw hole on the slab. SOLUTION: A vertical tubular body (through hole execution tool) 1 capable of being used in common for multiple slab through pipes P different in size is formed with a metal sheet, and a blocking plate storage chamber 2 is fitted at its lower end. The tubular body 1 is inserted between arranged bars 5 and fixed to a slab form (a) via a tongue piece 4 by nails or screws. A circular blocking plate 3 having the inner diameter matched with the outer diameter of the slab through pipe P is stored in the blocking plate storage chamber 2 in advance. Slab concrete (d) is placed, the slab form (a) is removed after slab concrete (d) is hardened, and the tubular body 1 is left in slab concrete (d). The slab through pipe P is inserted, mortar is filled into the gap between the slab through pipe P and the tubular body 1 to fix it. The tubular body 1 is not exposed to the outside, and work can be simplified.

Description

Detailed Description of the Invention

[0001]

[Industrial field of application] When constructing a concrete building, it is necessary to provide a through pipe that penetrates the slab that constitutes the floor of the upper floor in the vertical direction in the water supply section. The present invention relates to a construction tool used when constructing the slab through-pipe and a structure of a slab constructed using the construction tool.

[0002]

2. Description of the Related Art FIG. 7 shows a conventional slab through-pipe applying tool disclosed in Japanese Utility Model Publication No. 5-39152. First, as shown in (1), a cylinder b is mounted on a slab form a. The slab concrete d is placed in a state where the slab concrete d is placed and fixed to the form a with the nail c at its lower end. When the slab concrete d is hardened, the form a is removed, the through pipe P is piped as shown in (2), and the closing plate e such as a veneer plate is fixed around the through pipe P with the nail c. Then, the circumference of the through pipe P is closed.

Thereafter, mortar is cast inside the cylinder b to close the space between the through pipe P and the slab d to prevent water leakage from the upper floor to the lower floor.

[0004]

However, special work is required such as nailing the veneer plate in order to close it with the veneer plate or removing the veneer plate after the completion of construction. On the other hand, instead of the veneer plate, a structure that does not need to be removed has been proposed, in which the pipe surrounding formwork with a two-part structure is fixed to the through pipe with a band, but the structure is complicated and the size of each type of through pipe is different. There is a problem that it is necessary to prepare different forms around the pipe.

Further, since only the pipe forming form part is exposed from the lower surface of the slab, it becomes unsightly in a portion where the ceiling is not constructed, such as a parking lot, the band corrodes and the pipe forming form falls, There is a danger of hitting people or cars passing by.

The technical problem of the present invention is to pay attention to such a problem, and to realize a slab through pipe applying tool which is not exposed from the slab, is easy to work, and can be commonly used regardless of the size of the through pipe. Especially.

[0007]

The technical problem of the present invention is solved by the following means. Claim 1 is a slab penetration pipe processing tool used for forming a through hole for a slab penetration pipe, which comprises a vertical cylindrical body 1 placed on a form frame a for slab casting. The inner diameter is larger than the outer diameter of the through pipe P, and a closing plate storage chamber 2 having a diameter larger than that of the vertical tubular body 1 is communicated with the lower end of the vertical tubular body 1.

A through hole 2d is formed in the bottom plate 2c of the closing plate storage chamber 2 just below the vertical cylindrical body 1 and has an outer diameter of the through pipe P in the closing plate storage chamber 2. An annular closing plate 3 having a matched inner diameter is stored. And this closing plate storage chamber 2
Are fixed in a state of being placed on the form a.

According to this structure, since the slab through-pipe applying tool is embedded in the slab d, it is not exposed to the outside of the slab d. Further, the work is completed only by filling the vertical cylindrical body 1 with mortar in a state where the through pipe P penetrates the hole 3a of the closing plate 3, and the workability is excellent.

In the slab penetration pipe processing tool according to claim 2, the bottom plate 2c of the closing plate storage chamber 2 according to claim 1 has a detachable structure. As a result, the bottom plate 2c is removed, the closing plate 3 is stored in the closing plate storage chamber 2, and then the bottom plate 2c is closed and fixed, so that only the closing plate 3 is adjusted to each size of the through pipe P. It is sufficient if you prepare it, and the slab through pipe application tool itself can be used for each size of through pipe.

A third aspect of the present invention is a tool for applying a slab through pipe, wherein the closing plate storage chamber 2 according to the first or second aspect has a height such that the mortar is spread over the entire internal space thereof. .

When the size of the closing plate storage chamber 2 in the height direction is small, the mortar is less likely to spread over the entire closing plate storage chamber 2 and the strength is weak, but if the size in the height direction is set sufficiently, Since the mortar can be smoothly moved into the whole of the closing plate storage chamber 2 and the dimension in the height direction is sufficient, the mortar thickness is large and the strength is high, and the connection with the slab d is strong.

According to a fourth aspect of the present invention, the closing plate storage chamber 2 according to claim 1, 2 or 3 is separated from the vertical cylindrical body 1, and at least the closing plate storage chamber 2 side is provided. Is a slab penetration pipe processing tool having guide means for mounting the vertical cylindrical body 1.

Since the slab penetrating pipe working tool of the present invention is installed after the bar is arranged on the slab form a, it is fixed on the form a through the slab penetrating tool from between the bar arrangements 5 and 5. Will be done. Therefore, in order to install a large slab penetration pipe processing tool in preparation for a thick penetration pipe, there is a possibility that it cannot pass between the bar arrangements 5, 5, but as in the present invention, the vertical tubular body 1
If the closing plate storage chamber 2 and the closing plate storage chamber 2 are separate bodies, they can pass through separately, so that work can be easily performed. Further, since the guide means is provided, the vertical tubular body 1 can be easily and surely positioned and connected to the closing plate storage chamber 2 to be used as a slab penetration pipe processing tool.

A fifth aspect of the present invention is a structure of a slab constructed by using the slab through pipe applying tool, wherein the vertical tubular body 1 is embedded between a slab d and a through pipe P penetrating the slab of a building. The inner diameter of the vertical tubular body 1 is larger than the outer diameter of the through pipe P. A closing plate storage chamber 2 having a diameter larger than that of the vertical cylindrical body 1 is communicated with the lower end of the vertical cylindrical body 1, and the bottom plate 2c of the closing plate storage chamber 2 has the vertical cylindrical shape. A through hole 2d is opened just below the body 1.

In addition, an annular closing plate 3 having an inner diameter matching the outer diameter of the through pipe P is housed in the closing plate housing chamber 2,
The closing plate storage chamber 2 is fixed to the frame a. Further, a through pipe P penetrates through the vertical tubular body 1, the closing plate storage chamber 2 and the annular closing plate 3, and the space between the through pipe P and the vertical tubular body 1 and the closing plate storage chamber. Mortar is placed in the space in 2.

As described above, since the slab penetration pipe processing tool is embedded in the slab d, it does not remain exposed outside from the slab surface, and there is no risk of corrosion and dropping. The space between the vertical cylindrical body 1 and the through pipe P communicates with the closing plate storage chamber 2 and these spaces are filled with mortar, so that a robust structure is obtained.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, how the slab through pipe tool and slab structure according to the present invention are practically embodied will be described. FIG. 1 is a plan view and a partial cross-sectional side view showing an embodiment of a slab penetration pipe processing tool according to the present invention.

Reference numeral 1 is a vertical cylindrical body, and the inside 1a thereof communicates with the closing plate storage chamber 2. The height h of the closing plate storage chamber 2 is smaller than the height H of the vertical cylindrical body 1, for example, 1
It is about 2 cm. The closing plate storage chamber 2 is formed by a cylindrical tubular body 2a, a ceiling portion 2b, and a bottom plate 2c, and the inner diameter of the tubular body 2a is sufficiently larger than the inner diameter of the vertical tubular body 1.

In the bottom plate 2c of the closing plate storage chamber 2, a through hole 2d is opened just below the vertical cylindrical body 1. Then, in the closing plate storage chamber 2, an annular closing plate 3 having an inner diameter matching the outer diameter of the through pipe is stored.

The cylindrical side wall of the closing plate accommodating chamber 2 has a double structure, and the outer side wall 2a is integral with the ceiling plate 2b, while the inner side wall 2e is integral with the bottom plate 2c. ing. Therefore, as shown by the chain line, the bottom plate 2c can be detached from the ceiling plate 2b and the outer side wall 2a, and the closing plate 3 can be inserted inside and then inserted into the outer side wall 2a again as shown by the solid line. . And the double side wall 2
Screw a screw into a and 2e from the side to fix it.

The closing plate 3 to be put into the closing plate storage chamber 2 has an annular shape, and the through hole 3a is opened in the center. However, as shown in FIG. 2, the inside diameter of the through hole 3a is the slab through pipe P. The closing plate 3 having a size matching the outer diameter of the closing plate is inserted into the closing plate storage chamber 2.

Next, a method of constructing a slab using this slab penetration pipe processing tool will be described with reference to FIGS. 3 to 5. First,
As shown in FIG. 3, the slab through pipe application tool is installed on the slab form a. At this time, the annular closing plate 3 (FIG. 2) whose inner diameter matches the outer diameter of the through pipe P is closed. Put it in the storage room 2. Then, the penetrating pipe P is positioned such that the penetrating position is at the center of the vertical cylindrical body 1, and the outer wall 2a of the closing plate storage chamber 2 is fixed to the form a using the tongue piece 4.

That is, as shown in FIGS. 1 and 2, tongues 4 are attached to the outer wall 2a of the closing plate housing chamber 2 at intervals of 120 degrees, for example, and the tongues 4 are nailed to the form a or Fix with screws.

Since slab reinforcements 5 are provided vertically and horizontally on the form a, a slab penetration pipe tool is inserted between the reinforcements 5 and 5, but each reinforcement 5/5 In the case of a tool for applying a large slab through pipe that cannot be inserted from between, use a split structure as shown in FIG.

When the slab through pipe application tool is fixed and the vertical opening 1 is covered with gum tape or the like so that concrete does not enter the vertical cylindrical body 1, concrete is placed on the form a. , As shown in FIG. That is, the slab through-pipe applying tool is embedded in the slab d.

The slab penetration pipe processing tool of the present invention is formed so that when it is fixed on the form a, it has a height approximately the same as or slightly higher than the thickness of the slab concrete d. When it is necessary to connect a horizontal pipe to the through pipe P, as shown by a chain line in the vertical cylindrical body 1 of FIG.
The upper end of the vertical tubular body 1 is cut into a semicircular shape, and a paper tube for horizontal piping is aligned with this portion, and then concrete is poured.

After curing the concrete and removing the form a, the result is as shown in FIG. That is, the slab through-pipe applying tool having the closing plate 3 built in the closing plate storage chamber 2 is embedded and fixed in the slab concrete d.

Next, as shown in FIG. 5 (2), the through pipe P is passed through the slab through pipe applying tool so that the through pipe P penetrates through the through hole 3 a at the center of the closing plate 3. Align. Although the penetrating pipe P does not always come to the center of the vertical tubular body 1, the outer diameter of the closing plate 3 is smaller than the inner diameter of the closing plate storage chamber 2 even when the centers of the two do not coincide.
As indicated by the broken line in the plan view of FIG.
Should be moved.

Next, the work is completed when the mortar 6 is filled between the through-pipe P and the slab through-pipe application tool and hardened.

Since the closing plate storage chamber 2 has such a height that the mortar spreads over the entire inner space thereof, the mortar can be smoothly moved to the entire inside of the closing plate storage chamber 2. Moreover, since the dimension in the height direction is sufficient, the bonding strength with the slab is secured. The thickness of the mortar 62 in the closing plate storage chamber 2, that is, the fog size is about 1 to 2 cm.

Since the outer diameter of the through pipe P is various, the slab through pipe application tool of the present invention is also prepared in various sizes according to each pipe diameter. For example, for 13, 16, 20, 25 mm, 3
About 5 types are prepared, such as 0, 40 mm, 50 mm, 65 mm, and 100 mm.

And, for example, 13, 16, 20, 25 m
In the case of a product for m, only the closing plate 3 with a pipe diameter of 1
Four types corresponding to each of the through pipes P of 3, 16, 20, 25 mm are prepared, and the others (vertical cylindrical body 1, closing plate storage chamber 2, etc.) are shared. The outer diameters of the four types of blocking plates are the same, and by selecting an annular blocking plate having an inner diameter corresponding to the outer diameter of the slab penetration pipe and placing it in the blocking plate storage chamber 2, four types of penetration pipes with different diameters are provided. Can handle.

When the outer diameter of the through pipe is 30 mm or more, another slab through pipe processing tool having a larger diameter is used. When the outer diameter of the through pipe becomes larger, for example, 65 mm or 100 mm,
In some cases, the slab penetration pipe processing tool cannot pass between the slab reinforcements 5 and 5. In such a case, as shown in FIG. 6, the vertical cylindrical body 1 and the closing plate storage chamber 2 are separated from each other.

In the case of the separation type of FIG. 6, the vertical cylindrical body 1
Has a structure in which a flange 1b is attached to the outer circumference of the lower end of the cylinder. Further, in the center of the ceiling portion 2b of the closing plate storage chamber 2,
The upward cylindrical portion 2f is integrated, and the other parts are shown in FIG.
It has the same structure as the closing plate storage chamber 2. The outer diameter of the cylindrical portion 2f is sized to fit inside the vertical tubular body 1.

When the through pipe has a large diameter of, for example, 65 mm or more, only the closing plate storage chamber side 2 g of the separation type slab through pipe application tool is inserted from between the slab reinforcements 5 and 5 and placed on the form a. Then, the tongue piece 4 is fixed to the form a with nails or screws.

Next, the vertical cylindrical body 1 is inserted between the slab reinforcements 5 and 5 and covered on the closing plate storage chamber 2. That is, the upper cylindrical portion 2f of the closing plate storage chamber 2 is positioned so as to enter the vertical tubular body 1 and fitted to each other. Then, the screw 7 is inserted through the hole 1c formed in the flange 1b and fixed to the ceiling plate 2b by screwing. It is also possible to omit the flange 1b and insert a screw from the side to fix the lower end of the vertical cylindrical body to the cylindrical portion 2f.

In the above embodiment, the flange 1b of the vertical cylindrical body 1 and the ceiling plate 2b may be fixed by means other than screw fixing. Also, a tongue piece 4 for fixing to the form a
May be provided on the side of the outer side wall 2a integrated with the ceiling plate 2b as shown, but may be provided on the bottom plate 2c integrated with the inner side wall 2e. In addition, the material of each part of the slab through pipe application tool,
A metal that is a noncombustible material is used.

[0039]

According to the first aspect of the present invention, the closing plate storage chamber 2 having a diameter larger than that of the vertical cylindrical body 1 is communicated with the lower end of the vertical cylindrical body 1 placed on the slab form a. A through hole is formed in the bottom plate 2c of the closing plate storage chamber 2, and an annular closing plate 3 having an inner diameter that matches the outer diameter of the through pipe P is stored in the closing plate storage chamber 2. The chamber 2 is structured to be placed and fixed on the mold a.

As a result, since the entire slab through-pipe applying tool is embedded in the slab d, it is not exposed to the outside of the slab and is not corroded and fallen off. Further, it is only necessary to fill the vertical cylindrical body 1 with mortar in a state where the through pipe P penetrates the hole of the closing plate 3, and the work becomes easy.

According to the second aspect, since the bottom plate 2c of the closing plate storage chamber 2 has a detachable structure, the bottom plate 2c is removed, the closing plate 3 is stored in the closing plate storage chamber 2, and then the bottom plate 2c is closed. It is sufficient to prepare only the closing plate 3 in accordance with each size of the through-pipe P by fixing it by fixing with the slab through-pipe application tool itself, which can be used for each size of the through-pipe.

According to the third aspect, since the height dimension is such that the mortar spreads over the entire internal space of the closing plate storage chamber 2, the mortar can be smoothly moved to the entire closing plate storage chamber 2 and Since the dimension in the height direction is sufficient, the strength is high and the connection with the slab is robust.

According to the fourth aspect, since the closing plate storage chamber 2 and the vertical cylindrical body 1 are separated and the guide means is provided between them, the closing plate storage chamber 2 is arranged with the reinforcing bar 5. The vertical cylindrical body 1 is placed on the form a by inserting the vertical cylindrical body 1
It can be inserted from between and can be installed without being obstructed by the bar arrangement 5 even when constructing a large-diameter through pipe. Further, by using the guide means, the vertical cylindrical body 1 can be easily and reliably positioned and connected on the closing plate storage chamber 2.

According to the slab structure of the fifth aspect, since the entire slab through-pipe applying tool is embedded in the slab d,
It does not remain exposed outside the slab surface, and there is no risk of corrosion and falling. The space between the vertical cylindrical body 1 and the through pipe P communicates with the closing plate storage chamber 3, and since these spaces are filled with mortar, the structure is robust.

[Brief description of drawings]

FIG. 1 is a plan view and a partial cross-sectional side view showing an embodiment of a slab penetration pipe processing tool according to the present invention.

2A and 2B are a plan view and a partial cross-sectional side view illustrating a method of using the slab penetration pipe processing tool of FIG.

3 to 5 are views for explaining a slab construction method using the slab penetration pipe processing tool of FIG. 1, and FIG. 3 is a perspective view of a state in which the slab penetration pipe processing tool is installed on the slab formwork. It is a figure.

FIG. 4 is a vertical sectional view showing a state where slab concrete is cast on a slab formwork.

FIG. 5 is a vertical cross-sectional view for explaining the order of attaching and fixing the through tube after removing the mold.

6A and 6B are a plan view and a vertical sectional view showing an embodiment of a separation type of a vertical cylindrical body and a closing plate storage chamber.

FIG. 7 is a vertical cross-sectional view for explaining a conventional slab penetration pipe processing tool.

[Explanation of symbols]

 a Slab formwork d Slab P Slab penetrating pipe 1 Vertical cylindrical body 2 Closure plate storage chamber 3 Closure plate 4 Tongue for fixing 5 Slab reinforcement 6, 62 Mortar

Claims (5)

[Claims] 1. A tool used for forming a through hole for a slab through-pipe, comprising a vertical cylindrical body mounted on a slab formwork, the inner diameter of which is larger than the outer diameter of the through-tube. The lower end of the vertical tubular body is communicated with a closing plate storage chamber having a diameter larger than that of the vertical tubular body. The bottom plate of the closing plate storage chamber is directly below the vertical tubular body. A tool for applying a slab through pipe, wherein a through hole is formed, and an annular closing plate having an inner diameter matching the outer diameter of the through pipe is stored in the closing plate storage chamber. 2. The slab penetration according to claim 1, wherein the bottom plate of the closing plate storage chamber has a detachable structure, and has means for fixing the bottom plate to the closing plate storage chamber. Pipe tool. 3. The slab penetrating pipe according to claim 1, wherein the closing plate accommodating chamber has a height such that the mortar is distributed in the entire inner space thereof. tool. 4. The closing plate storage chamber and the vertical cylindrical body are separated from each other, and a guide means for mounting the vertical cylindrical body is provided at least on the closing plate storage chamber side. The slab penetration pipe processing tool according to claim 1, 2 or 3, characterized in that 5. A vertical tubular body is embedded between a slab and a through pipe penetrating the slab of a building, and the inner diameter of the vertical tubular body is larger than the outer diameter of the through pipe. The lower end of the vertical tubular body is communicated with a closing plate storage chamber having a diameter larger than that of the vertical tubular body. The bottom plate of the closing plate storage chamber has a through hole just below the vertical tubular body. An opening is provided, an annular closing plate having an inner diameter matching the outer diameter of the through pipe is stored in the closing plate storage chamber, and the closing plate storage chamber is fixed to the mold. A through tube penetrating through the vertical tubular body, the closing plate storage chamber and the annular closing plate; and mortar in the space between the through pipe and the vertical tubular body and in the closing plate storage chamber. The slab structure is characterized by being cast.