JP2002188235A - Embedded material for concrete slab, precast concrete slab and void concrete slab - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an embedded material for a concrete slab, a precast concrete slab and a void concrete slab, which enable a wiring pipe and the like to be easily laid without making the void concrete slab heavier. SOLUTION: In the embedded material 1 for the concrete slab, at least one arrangement groove 3 is provided along a short or long side of a top or under surface of an embedded material body, and a removable cover body 3 is mounted on the upper opening of the arrangement groove 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an embedding material for a concrete slab, a precast concrete plate and a hollow concrete slab.

[0002]

2. Description of the Related Art Piping such as wiring pipes in hollow concrete slabs has been performed by the method shown in FIGS. In the methods shown in (1) and (2), the wiring tube 40 and the like are piped in a space 39 formed by cutting a part of the concrete slab embedding material 38 provided between the truss bars 37. In the method shown in (3), the wiring pipe 40 and the like are piped in the grooves 41 provided on the upper surface of the concrete slab embedding material 38.

[0003]

However, all of the above methods have a problem that the hollow concrete slab becomes heavy because the top concrete is poured into the space or the groove.

The present invention has been made in view of these problems, and an object of the present invention is to provide an embedding material for a concrete slab, a precast concrete plate and a concrete slab capable of simplifying piping such as a wiring pipe without making a hollow concrete slab heavy. It is to provide a hollow concrete slab.

[0005]

Means for solving the above problems are as follows. The embedding material for concrete slab according to the first aspect of the present invention has at least one groove provided on the upper surface of the embedding material body. A detachable lid is attached to an upper opening of the disposing groove, and the embedding material for concrete slab according to the second aspect of the present invention is characterized in that, in the first aspect, the disposing groove is embedded. The embedding material for concrete slab according to claim 3, characterized in that the embedding material body is installed along a short side or a long side of the main body with a predetermined inclination angle with respect to the short side or the long side. In 1 or 2, at least one rib forming groove is provided on the lower surface of the embedding material main body along a short side or a long side, and detachable lids are attached to both ends of the rib forming groove. Claim 4
In the concrete slab embedding material of the invention, at least one disposing hole is provided through the embedding material main body, and detachable lids are attached to both ends of the disposing hole. The embedding material for a concrete slab according to the invention of claim 5 is characterized in that, in the invention, the arrangement hole is formed along the short side or the long side of the embedding material body, The embedding material for a concrete slab according to the invention of claim 6 is characterized in that the arrangement hole is in the central part or lower part of the embedding material body. The embedding material for concrete slab of the invention according to claim 7 is characterized in that the lid is punchable in any one of claims 1 to 6, The precast concrete plate of the invention according to claim 8 is characterized in that: The hollow concrete slab according to claim 9, wherein at least one of the concrete slab embedding materials according to any one of (7) to (7) is installed on a concrete plate. At least one or more of the plates are laid adjacent to each other between the beams to form a lower floor, and top concrete is cast on the lower floor.

[0006] Piping such as a wiring pipe is formed in the installation groove in which the upper opening is closed, and no top concrete is cast in the installation groove. A pipe such as a wiring pipe is formed in an installation hole penetrating the center or lower portion of the embedding material main body, and no top concrete is poured into the installation hole. With the rib forming groove, a lower rib that increases the rigidity of the lower shell can be formed. By providing the disposing grooves obliquely, piping such as a wiring tube can be easily formed in any direction. Since the lid of the disposing groove or the disposing hole is detachable or punchable, when these are not used, the lid is used as it is. It is possible to manufacture a precast concrete plate that is lightweight and allows arbitrary selection of piping locations such as wiring pipes. The use of a PC board provided with a diagonally arranged groove allows a wiring pipe or the like to be installed in the shortest distance. It is possible to construct a hollow concrete slab that is lightweight and allows a wiring pipe or the like to be easily piped in the shortest distance.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of an embedding material for concrete slab (hereinafter referred to as embedding material), a precast concrete plate (hereinafter referred to as PC board) and a hollow concrete slab (hereinafter referred to as slab) of the present invention will be described below. It will be described based on. First, the embedding material will be described, and then embodiments of PC boards and slabs using the embedding material will be described. In each embodiment, the same components are denoted by the same reference numerals, and different configurations are described. Will be described with different reference numerals.

FIG. 1 shows an embedding material 1 according to the first embodiment. This embedding material 1 is made of a polystyrene-based resin or a polyolefin-based resin to form a flat rectangular foam 2. On the upper surface, three arrangement grooves 3 are provided along the short side. The upper opening is closed by a removable lid 4. Protrusions 5 for supporting the lid 4 are provided on both side surfaces of the disposing groove 3 so that the lid 4 does not collapse even when top concrete is poured. Therefore, when piping a wiring pipe (not shown) or the like in the installation groove 3, the lid 4 is removed, and when the lid 4 is installed after piping, top concrete is prevented from being poured into the groove.
When the cover 4 is not used as the disposing groove 3, the cover 4 can be used as a gap with the cover 4 left. This arrangement groove 3
Is not limited to three, and may be more or less, and may be provided along the long side of the embedding material 1. In addition, the cross-sectional shape of the disposing groove 3 may be a rectangular cross-section, a circular cross-section, a U-shaped cross-section, or another shape other than the above.

FIG. 2 shows an embedding material 6 according to a second embodiment. The embedding material 6 has the arrangement groove 3 provided at a predetermined angle (so-called oblique) with respect to the short side. The arrangement groove 3 may be provided in one or more of a plurality as shown in (1) of the figure, or may be provided only in one as shown in (2) of the figure. Thereby, it becomes possible to pipe the wiring pipe and the like diagonally.

FIG. 3 shows an embedding material 7 according to a third embodiment. The embedding material 7 has an arrangement hole 8 penetrated along a short side at the center of the foam 2 and openings at both ends thereof are closed by a punchable lid 9. Except for this, the configuration is the same as that of the embedding material 1. Therefore, when laying a wiring pipe or the like in this arrangement hole 8, as shown in FIG. 4, an operator presses the cover 9 with a finger and punches it. On the other hand, when the arrangement hole 8 is not used, the lid 9 is used as a gap with the lid 9 left. Note that the lid 9 is attached with a strength not to be punched out by the top concrete.

FIG. 5 shows an embedding material 10 according to a fourth embodiment. This embedding material 10 is provided with the above-mentioned arrangement holes 8 in the lower part of the foam 2, and other than this, the embedding material 7 is provided.
It has the same configuration as.

FIG. 6 shows an embedding material 11 according to a fifth embodiment. The embedding material 11 is such that the cover 4 of the embedding material 1 can be punched, and has the same configuration as the embedding material 1 except for this. This lid 4 can be easily punched out by the operator as described above.

When the above-described arrangement grooves 3 and arrangement holes 8 are not used, the lids 4 and 9 can be used as voids while the lids 4 and 9 are left.

FIG. 7 shows an embedding material 12 according to a sixth embodiment. This embedding material 12 has a rib-forming groove 13 provided with a detachable lid 4 at both ends on the lower surface, and has the same configuration as the embedding material 1 except for this. The rib forming groove 13 forms a lower rib (not shown) for increasing the rigidity of the lower shell, and is connected to the arrangement groove 3 by a through hole 13a. Therefore, the embedding material 1
2 are provided with the lids 4 at both ends of the rib forming groove 13 and the groove 1
3 and the cover 4 of the disposing groove 3 connected thereto are punched and installed on the PC board, and the rib forming groove 1 is formed through the through hole 13a.
Top concrete is poured into 3 to form lower ribs (not shown). On the other hand, in the arrangement groove 3 from which the lid body 4 has been punched, top concrete is cast and an upper rib (not shown) for increasing the rigidity of the upper shell is formed. Further, the arrangement groove 3 in which the cover 4 is not punched is used as a gap. Thus, the arrangement groove 3 can be used for forming a rib, for piping, and for a gap depending on the application. The number of the arrangement grooves 3 is not limited to three, and may be more or less.

FIG. 8 shows an embedding material 14 according to a seventh embodiment. The embedding material 14 is provided with a rib forming groove 13 connected along the long side and connected to the disposing groove 3 by a through hole 13a, and has the same configuration as the embedding material 12 except for this. When this embedding material 12 is used, a lower rib (not shown) for increasing the rigidity of the lower shell can be provided along the long side of the PC board. Note that these rib forming grooves 13 are 2
It can be formed as described above, and can also be formed in the embedding material 1.

Next, an embodiment of a PC board using the above-described embedding material will be described. In each embodiment, the same components as those described above are denoted by the same reference numerals, and different configurations are different. The description is given with reference numerals.

FIG. 9 shows a PC board 15 according to the first embodiment. This PC board 15 is a concrete board 16
Truss bars 17 arranged at appropriate intervals along the long side of the truss
It has a configuration in which an embedding material 1 is installed therebetween. The truss bars 17 are formed by joining one upper chord bar 18 and two lower chord bars 19 arranged in a triangular shape with a corrugated lattice bar 20. It is joined to the muscle 21. With the arrangement grooves 3 of the embedding material 1, the wiring pipe can be crossed with the truss bars 17, and the arrangement grooves 3 that are not used for arrangement are used as voids.

FIG. 10 shows a PC board 22 according to the second embodiment. This PC board 22 is a concrete board 1
6 is provided with an embedding material 14 (see FIG. 8), and has the same configuration as the PC board 15 except for this. This embedding material 14
The lower ribs (not shown) for reinforcing the concrete plate 16 can be formed by the rib forming grooves 13.

In addition to the PC boards 15 and 22, a PC board using the embedding materials 6, 7, 10, 11, 12 or the embedding materials 1, 6, 7, 10, 11, 11, 12,
It is also possible to form a PC board using at least two or more of the 14.

Next, embodiments of the slab using the above-mentioned PC board will be described. In each embodiment, the same components as those described above are denoted by the same reference numerals, and different components are denoted by different reference numerals. A description is given below.

FIGS. 11 and 12 show a slab 23 according to the first embodiment.
Is laid between the long beam 24 and the short beam 25 and the lower floor 26
The top slab 27 is arranged here and the top concrete 28 is cast. A wiring pipe 29 is provided in the arrangement groove 3 of the embedding material 1, and is provided in a direction crossing the truss bars 17 as a whole. On the other hand, the disposing groove 3 in which the wiring pipe 29 is not provided serves as a gap portion to reduce the weight of the slab 23.

FIG. 13 shows a slab 30 according to the second embodiment. The slab 30 uses a PC board 31 in which the embedding material 6 is disposed at a necessary position, and has the same configuration as that of the slab 23 except for this. This PC board 3
If 1 is used, the wiring pipe 29 can be piped at the shortest distance.

FIG. 14 shows a slab 32 according to the third embodiment. The slab 32 is connected to the PC board 22 (FIG. 1).
0), and the other configuration is the same as that of the slab 23 described above. When this PC plate 22 is used, top concrete 28 is driven into the rib forming groove 13 of the embedding material 14 from the through hole 13 a of the disposing groove 3 in which the lid 4 is punched, thereby increasing the rigidity of the lower shell 33. The raised lower ribs 34 are formed, and the arrangement grooves 3 can be used for piping, upper rib formation, and voids. That is, a wiring pipe 29 is provided in one of the installation grooves 3, and the top concrete 2 is provided in the installation groove 3 from which the lid 4 is punched.
8, upper ribs 36 for increasing the rigidity of the upper shell 35 are formed, and the arrangement groove 3 with the lid still used is used as a gap. Therefore, this slab 3
In 2, the rigidity of the lower shell 33 and the upper shell 35 is increased by the lower rib 34 and the upper rib 36, and these are prevented from resonating.

The third to sixth embedding materials 7, 10, 11,
A slab using a PC board using the PC board 12 or a PC board combining at least two or more of the first to seventh embedding materials 1, 6, 7, 10, 11, 12, and 14 can also be constructed.

[0025]

According to the present invention, a wiring pipe or the like can be laid in the installation groove in which the upper opening is closed, and the placement of top concrete into the installation groove can be prevented.

[0026] A wiring pipe or the like can be laid in the installation hole at the center or lower portion of the embedding material main body, and the placement of top concrete into the installation hole can be prevented.

The lower rib can be formed by the rib forming groove to increase the rigidity of the lower shell.

A wiring pipe or the like can be piped in an arbitrary direction by means of a diagonally arranged groove.

The disposing groove or the disposing hole can be used as a gap portion with the lid kept.

It is possible to manufacture a precast concrete plate which is lightweight and in which a piping location can be arbitrarily selected.

[0031] The wiring tube can be laid at the shortest distance by the PC board having the obliquely arranged grooves.

It is possible to construct a hollow concrete slab which is lightweight and in which a wiring pipe can be piped in the shortest distance.

The ribs for forming the ribs can form the lower ribs for increasing the rigidity of the lower shell, and the arrangement grooves can be used for piping, for forming the upper ribs, and for the gaps.

[Brief description of the drawings]

FIG. 1 is an embedding material according to a first embodiment, (1) is a perspective view, (2) is a cross-sectional view taken along the line AA of (1), and (3) is B of the same.
FIG. 4 is a cross-sectional view taken along line B.

FIG. 2 is an embedding material according to a second embodiment, wherein (1) and (2) are perspective views.

FIG. 3 is an embedding material according to a third embodiment, wherein (1) is a perspective view, (2) is a cross-sectional view taken along line CC of (1), and (3) is a cross-sectional view of the same.
FIG. 4 is a sectional view taken along line D.

FIGS. 4A and 4B are cross-sectional views showing a punched state of a lid.

FIG. 5 is a perspective view of an embedding material according to a fourth embodiment.

FIG. 6 is a perspective view of an embedding material according to a fifth embodiment.

FIG. 7 (1) is a perspective view of an embedding material according to a sixth embodiment,
(2) is a sectional view taken along line EE of (1).

FIG. 8 (1) is a perspective view of an embedding material according to a seventh embodiment,
FIG. 2B is a sectional view taken along line FF of FIG.

FIG. 9A is a plan view of a PC board according to the first embodiment,
(2) is a sectional view taken along line GG of (1), and (3) is a sectional view along a long side of (1).

FIGS. 10 (1) and (2) show P of the second embodiment.
It is sectional drawing of C board.

FIG. 11 is a partially cutaway plan view of the slab according to the first embodiment.

12 (1) is a sectional view taken along line HH of FIG. 11, (2) is an enlarged sectional view thereof, (3) is a sectional view taken along line II of FIG. 11,
(4) is an enlarged sectional view of the same.

FIG. 13 is a partially cutaway plan view of the slab according to the second embodiment.

FIGS. 14 (1) and (2) are cross-sectional views of a slab according to a third embodiment.

FIG. 15 is a sectional view of a conventional slab.

[Explanation of symbols]

 1, 6, 7, 10, 11, 12, 14, 38 Embedding material 2 Foam 3 Arrangement groove 4, 9 Lid 5 Projection 8 Arrangement hole 15, 22, 31 PC board 16 Concrete board 17, 37 Truss Bar 18 Upper chord 19 Bar chord 20 Lattice 21 Bending reinforcement 23, 30, 32 Slab 24 Long beam 25 Short beam 26 Bottom floor 27 Slab upper end bar 28 Top concrete 29, 40 Wiring pipe 33 Lower shell 34 Lower rib 35 Upper Shell 36 Upper rib 39 Space 41 Groove

Claims (9)

[Claims] 1. An embedding material for concrete slabs, wherein at least one arrangement groove is provided on an upper surface of an embedding material body, and a removable lid is attached to an upper opening of the arrangement groove. Material. 2. The mounting groove according to claim 1, wherein the disposing groove is provided along a short side or a long side of the embedding material main body at a predetermined inclination angle with respect to the short side or the long side. Embedding material for concrete slabs. 3. A bottom surface of the embedding material body is provided with at least one rib forming groove along a short side or a long side, and detachable lids are attached to both ends of the rib forming groove. The embedding material for a concrete slab according to claim 1 or 2, wherein: 4. A concrete, characterized in that at least one arranging hole penetrates through the embedding material main body, and detachable lids are attached to both ends of the arranging hole. Embedded material for slab. 5. The mounting hole according to claim 4, wherein the arranging holes are provided along the short side or the long side of the embedding material body at a predetermined inclination angle with respect to the short side or the long side, respectively. Embedding material for concrete slabs. 6. The embedding material for a concrete slab according to claim 4, wherein the arrangement hole is provided in a central portion or a lower portion of the embedding material main body. 7. The embedding material for a concrete slab according to claim 1, wherein the lid is punchable. 8. A precast concrete plate, wherein at least one of the concrete slab embedding materials according to claim 1 is installed on a concrete plate. 9. A lower floor is formed by laying at least one or more of the precast concrete plates according to claim 8 adjacent to a space between beams, and top concrete is cast on the lower floor. And hollow concrete slab.