JP2002339451A - Precast concrete slab, its manufacturing method, precast concrete slab for balcony, and outer thermal insulating structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a precast concrete slab allowing efficient outer thermal insulating construction, its manufacturing method, the precast concrete slab for a balcony, and an outer thermal insulating structure. SOLUTION: This precast concrete slab 1 is constituted by jointing two concrete slabs 2, 3 with a suitable interstice part 5 by truss reinforcements 4 and providing the interstice part 5 with an air layer forming material 6 and a thermal insulating material 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a precast concrete plate and a method for manufacturing the same, a precast concrete plate for a balcony, and an external heat insulating structure.

[0002]

2. Description of the Related Art A conventional external heat insulating structure is, for example, shown in FIG.
(1) and (2). In this outer heat insulating structure 37, a heat insulating material 40 is post-installed from the upper surface of the slab 38 and the parapet 39 on the top floor to the outer wall, and the outer balcony 41 and the frame 42 are integrated, so that the inner heat insulating material is provided on the indoor side. Reinforcement 43 is provided. As shown in (3) of the figure, when the tiles 44 are attached as the outer wall material, the tiles 44 are applied to the surface of the mortar 45 applied on the heat insulating material 40 or the surface of the extruded cement plate 47 attached with the hardware 46. Was pasted.

[0003]

However, the above-mentioned external heat insulating structure has a problem that external heat insulation cannot be efficiently performed. The present invention has been made in view of these problems, and an object of the present invention is to provide a precast concrete plate capable of performing efficient external heat insulation construction, a method for manufacturing the same, a precast concrete plate for a balcony, and an external heat insulation structure. is there.

[0004]

Means for solving the above problems are as follows. A precast concrete plate according to the first aspect of the present invention is formed by joining two concrete plates with truss bars at appropriate intervals. Characterized in that an air layer forming material and a heat insulating material are provided in the precast concrete plate of the invention of claim 2,
A precast concrete plate according to claim 3 is characterized in that one concrete plate is smaller than another concrete plate, and one of the concrete plates is an exterior concrete plate according to claim 1 or 2. The precast concrete plate of the invention according to claim 4 is characterized in that, in any one of claims 1 to 3, the truss bar located in the gap is covered with a heat insulating material. 5. The precast concrete plate according to any one of claims 1 to 4, wherein the truss bar is subjected to a rust preventive treatment or formed of a rust preventive material. Is provided with a heat insulating material so as to cover a part of the truss bars protruding from the upper surface of the concrete plate and an air layer forming material on the upper surface. The method of manufacturing a precast concrete plate according to claim 7, wherein a heat insulating material is provided on the air layer forming material and the concrete is cast. A heat insulating material is provided, and an air layer forming material is provided on the upper surface of the heat insulating material,
The method of manufacturing a precast concrete plate according to the invention of claim 8, wherein concrete is cast on the air layer forming material, wherein a heat insulating material is provided on an upper surface of the concrete plate having a truss bar projecting upward. An air layer forming material is provided on the upper surface of the heat insulating material, the truss bars are turned downward by turning over the concrete plate, and the truss bars are inserted into concrete cast in a formwork, and The method for producing a precast concrete plate according to the ninth aspect of the present invention is the sixth aspect.
The heat insulating material according to any one of Items 1 to 8, wherein the heat insulating material is a sprayed foam resin or a heat insulating mortar.
The precast concrete plate for balcony of the invention of
12. A precast concrete plate for a balcony according to claim 10, wherein a heat insulating material is provided on a joint end face with the frame, and a plurality of connecting bars project from the joint end face. Is characterized by being subjected to a rust-proofing treatment or formed of a rust-preventive material, and the precast concrete plate for a balcony according to the twelfth aspect of the present invention is characterized in that, in the eleventh aspect, the connecting bar is a truss bar. According to a thirteenth aspect of the present invention, there is provided the external heat insulating structure according to any one of the first to fifth aspects, wherein a precast concrete plate is provided between the upper and lower slabs or beams of the skeleton and the left and right columns. The pre-cast concrete plate according to any one of claims 1 to 5, wherein the external heat-insulating structure of the invention according to claim 14 is provided on an outer surface of a pillar in a skeleton. According to a fifteenth aspect of the present invention, there is provided an external heat insulating structure, wherein the precast concrete plate for a balcony according to any one of the tenth to twelfth aspects is attached to an outer surface of a slab or a beam in a skeleton. The external heat insulating structure of the invention of 16 is provided with the precast concrete plate according to any one of claims 1 to 5, wherein the precast concrete plate according to any one of claims 1 to 5 is provided between upper and lower slabs or beams in a skeleton, and between left and right columns, and on outer surfaces of the columns. The precast concrete plate for a balcony according to any one of claims 10 to 12 is attached to an outer surface of the beam, and the external heat insulating structure according to the invention according to claim 17 is characterized in that:
In any one of the sixth to sixth aspects, the precast concrete plate has a beam placed on the top surface of the inner concrete plate and a balcony placed on the top surface of the outer concrete plate, respectively. The outer heat insulating structure according to claim 14 is characterized in that the joining end of the precast concrete plate for a balcony is installed on the upper surface of the slab via a heat insulating material. The method according to claim 14, wherein the joint end of the precast concrete plate for a balcony is provided on the upper surface of the projecting body from the beam via a heat insulating material,
The outer heat-insulating structure according to the twentieth aspect of the present invention is the third aspect of the present invention.
17. The slab on the top floor according to any one of claims 17,
A parapet is formed by any of the precast concrete plates of any one of (1) to (5).

[0005] The heat insulation performance of the precast concrete plate can be enhanced. At least one step is formed at an upper portion or a side portion of the PC board. The exterior can be applied at the same time as installing the precast concrete plate on the skeleton. The heat insulation performance of the truss bars can be improved. The rust prevention performance of the truss bars can be enhanced. A precast concrete plate having heat insulation performance can be easily manufactured. An air layer can be easily formed on a precast concrete plate. A heat insulation layer can be easily formed on a precast concrete plate. The heat insulation performance of the precast concrete plate for a balcony can be improved. The joining strength of the precast concrete plate for the balcony to the frame can be increased. External insulation of walls, balconies and parapets can be efficiently performed. The pre-cast concrete plate and the pre-cast concrete plate for balcony can be installed on the skeleton, and at the same time, the external heat insulating structure can be constructed.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a precast concrete plate of the present invention (hereinafter referred to as a PC plate), a method for producing the same, and a precast concrete plate for a balcony (hereinafter, referred to as PC)
An embodiment of an external heat insulating structure will be described with reference to the drawings. Further, in each embodiment, the same configuration will be described with the same reference numerals, and different configurations will be described with different reference numerals.

FIGS. 1 and 2 show a PC board 1 according to a first embodiment. In this PC board 1, a concrete board 2 and an exterior concrete board 3 provided with a decorative material on the outer surface are joined with a truss bar 4 with a gap 5 as appropriate, and an air layer forming material 6 and a heat insulating material 7 Is provided. As shown in FIG. 2A, the air layer forming material 6 is formed by integrally forming a flat plate 6a, a gap forming pin 6b, and a porous plate 6c with a synthetic resin. The truss bar 4 has one upper bar 8 and two lower bar 9 connected by a corrugated lattice bar 10 to form a triangular prism. The upper bar 8 and the lower bar 9 are joined to the bending reinforcing bar 11, respectively. Have been. Further, the truss bars 4 located in the gaps 5 are insulated with a foam 15 as shown in FIG. This part can be covered with a spray foaming resin or a heat insulating mortar for heat insulation. The truss bars 4 may be formed of a rust-proof material such as stainless steel, in addition to being subjected to rust-proof treatment. The truss bars 4 may be so-called single trusses as shown in FIG. The air layer forming material 6 is not limited to the above as long as it can form an air layer, and may be, for example, a synthetic resin mat such as artificial turf.

FIG. 3 shows a PC board 12 according to a second embodiment. This PC board 12 is a concrete board 2
Has a length in the vertical direction shorter than that of the exterior concrete plate 3 and is formed with a step portion 13 for installing a beam on the upper portion. The other configuration is the same as that of the PC plate 1 described above.

FIG. 4 shows steps 13 and 14 on the upper and side portions.
Are formed, and the step portion 14 on this side portion is formed.
At the corners of the pillars are installed. As described above, at least one step portion 13 or 14 is formed on the upper portion or the side portion of the PC board 1.

Next, a first embodiment of a method for manufacturing a PC board will be described with reference to FIGS. First, as shown in (1) of FIG. 5, the exterior concrete plate 3 in which the upper portions of the truss bars 4 protrude from the upper surface at appropriate intervals is manufactured. Next, as shown in (2) of the same figure, the foam 15 is packed inside the truss bar 4. Then, an air layer forming material 6 shown in (2) of FIG. 2 is spread between the truss bars 4 in which the foam 15 is packed to form an air layer, and glass wool, rock wool, or the like is formed on the air layer. The heat insulating material 7 is spread to form a heat insulating layer. Next, after arranging the bending reinforcing bar 11 on the upper surface of the truss bar 4, concrete is cast to form the concrete plate 2, and the PC plate 1 shown in FIG. 1 is formed.

FIG. 6 shows a second embodiment of the method of manufacturing a PC board. According to this method, as shown in (1), the concrete plate 2 in which the upper portions of the truss bars 4 protrude from the upper surface at appropriate intervals is manufactured. Next, a heat insulating material 7 such as a heat insulating mortar is cast on the upper surface of the concrete plate 2 so as to cover the truss bars 4 located in the gaps 5.
Next, as shown in (2), the air layer forming material 6 is spread over the heat insulating material 7 to form an air layer. Next, (3)
As shown in the figure, the concrete truss 2 on which these are laid is turned upside down so that the truss bars 4 face downward.
Is embedded in the concrete 17 in the mold 16 to form the PC board 1 shown in FIG.

FIG. 7 shows a third embodiment of the method of manufacturing a PC board. In this method, as shown in (1), a heat insulating material 7 is spread over the upper surface of the concrete plate 2 from which the upper portion of the truss bars 4 protrudes at appropriate intervals to form a heat insulating layer. The air layer forming material 6 is spread over the layer 7 to form an air layer. Next, the concrete plate 2 is turned over so that the truss bars 4 face downward,
The truss bars 4 are buried in the concrete 17 of the formwork 16.

FIG. 8 shows a balcony PC board 18. This balcony PC board 18 is a joining end face 19
Is provided with a heat insulating material 20 such as styrene foam, and a connecting bar 21 and a shear reinforcing bar 2
1a is projected. The connecting bars 21 and the shear reinforcing bars 21a are subjected to a rust preventive treatment or are made of a rust preventive material such as stainless steel. The connecting bar 21 may be a single truss as shown in (2).

FIGS. 9 to 11 show an external heat insulating structure 22 according to the first embodiment.
A C plate 18 is used. This outer heat insulating structure 22
As shown in FIG. 9, the PC board 1 has upper and lower beams 2 in the frame.
3 and the left and right pillars 24 are attached with the joint fittings 1 a, and the balcony PC board 18 is attached to the outer surface of the beam 23. In this PC board 1, only the concrete board 2 is joined to the skeleton to form a structural material, so the load acting on the exterior concrete board 3 is borne by the truss bars 4. Further, since the outer surface of the concrete plate 2 is flush with the surfaces of the beams 23 and the columns 24, the surfaces of the beams 23 and the columns 24 installed on the steps 13 and 14 are covered with the heat insulating material 7. At the same time, the balcony PC board 18 is supported by the exterior concrete board 3. The balcony PC plate 18 is not limited to the PC plate, and may be formed of cast-in-place concrete.

As shown in FIG. 10, the outer surface of the pillar 24 is provided with a corner portion of the pillar at the step portion 14 on the side, and the PC board 1
Covered with. In addition, the outer surface of the pillar 24
As shown in (1), the PC board 1 may be directly attached by the truss bars 4.

FIG. 12 shows external heat insulation of the slab 25 on the top floor. The slab 25 on the top floor provided with a heat insulating material 26 such as glass wool or rock wool is formed in the middle of the PC board 1. The parapet 27 is formed by a PC board extending from the slab 25. As described above, the outer heat insulating structure 22 includes the PC board 1 and the balcony P
It can be constructed at the same time when the C-plate 18 is attached, and there is no need to attach a heat insulating material in post-processing as in the related art.
Furthermore, since all the frames are covered with the heat insulating material 7 and the balconies are also insulated from the frame by the heat insulating material 20,
Efficient external insulation can be achieved.

FIG. 13 shows an external heat insulating structure 28 according to the second embodiment. This outer heat insulating structure 28
A PC board 29 for balconies, in which no heat insulating material is provided on the joining end face 19, is used, and the heat insulating material 7 of the PC board 1 is provided between the joining end face 19 and the beam 23.

FIG. 14 shows an external heat insulating structure 30 according to the third embodiment. This outer heat insulating structure 30
The joint end portion 31 of the balcony PC board 34 is joined to the upper surface of the slab 33 with a bolt 34a via a heat insulating material 32 such as hard rubber.
It has the same configuration as 2. The balcony PC board 34 is insulated from the frame by the heat insulating material 32, and the other parts are also thermally insulated by the PC board 1.

FIG. 15 shows an external heat insulating structure 35 according to the fourth embodiment. This outer heat insulating structure 35 is
The joint end 31 of the balcony PC board 34 is attached to the protrusion 36 from the beam 23 via a heat insulating material 32 such as hard rubber.
4a, and the protruding body 36 is
And the exterior concrete 3, and the other configuration is the same as that of the external heat insulating structure 30. In addition, the PC board 34 for balconies is not limited to the PC board, and may be formed of cast-in-place concrete.

The external heat-insulating structure is not limited to the above embodiment, and the external heat-insulating structure (not shown) in which only the wall is formed of a PC plate, or only the balcony is formed of a balcony PC plate. An outer insulation structure (not shown) can also be constructed.

[0021]

The heat insulation performance of the PC board can be improved.

At least one step may be formed on the top or side of the PC board.

The exterior construction can be performed simultaneously with the installation of the PC board on the skeleton.

The heat insulation performance of the truss bars can be improved.

The rust prevention performance of the truss bars can be improved.

A PC board having heat insulation performance can be easily manufactured.

Since the air layer can be easily formed on the PC board, and the air permeability between the exterior concrete board and the heat insulating material is improved, it is possible to prevent the occurrence of dew condensation on this portion.

The heat insulating layer can be easily formed on the PC board.

The heat insulation performance of the balcony PC board can be improved.

The joining strength of the balcony PC board to the frame can be increased.

External insulation of walls, balconies and parapets can be efficiently performed.

At the same time as attaching the PC board and the PC board for balcony to the frame, an external heat insulating structure can be constructed.

[Brief description of the drawings]

FIG. 1 is a sectional perspective view of a PC board according to a first embodiment.

2 (1) is a sectional view of FIG. 1, (2) is a perspective view of an air layer forming material, (3) is a perspective view of a triangular truss,
(4) is a perspective view of a foam, and (5) is a perspective view of a single truss.

FIG. 3A is a rear view of a PC board according to a second embodiment;
(2) is a sectional view of a step portion.

FIGS. 4A and 4B are PCs according to a second embodiment;
It is a rear view of a board.

FIGS. 5A to 5C are cross-sectional views illustrating a first embodiment of a method for manufacturing a PC board.

FIGS. 6 (1) to (3) are cross-sectional views showing a second embodiment of the method for manufacturing a PC board.

FIGS. 7 (1) and (2) show a third method of manufacturing a PC board.
It is sectional drawing which shows embodiment.

FIG. 8 (1) is a sectional perspective view of a balcony PC board,
(2) is a sectional view of the joint end.

FIG. 9 is a cross-sectional view of a beam portion of the external heat-insulating structure according to the first embodiment.

FIG. 10 is a cross-sectional view of a pillar portion of the external heat insulating structure according to the first embodiment.

FIG. 11 is a sectional view of a pillar portion of the external heat insulating structure according to the first embodiment.

FIG. 12 is a cross-sectional view of a parapet portion of the external heat insulating structure according to the first embodiment.

FIG. 13 is a cross-sectional view of a beam portion of the external heat-insulating structure according to the second embodiment.

FIG. 14 is a cross-sectional view of a beam portion of the external heat insulating structure according to the third embodiment.

FIG. 15 is a cross-sectional view of a beam portion of the external heat insulating structure according to the fourth embodiment.

FIG. 16 is a cross-sectional view of a conventional external heat insulating structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 12 PC board 2 Concrete board 3 Exterior concrete board 4 Truss bar 5 Gap part 6 Air layer forming material 7, 20, 26, 32, 40 Heat insulating material 8 Upper bar 9 Lower bar 10 Lattice bar 11 Bending reinforcing bar 13, 14 Step 15 Foam 16 Formwork 17 Concrete 18, 29, 34 Balcony PC board 19 Joining end face 21 Connecting bar 22, 28, 30, 35, 37 Outer heat insulating structure 23 Beam 24 Column 25, 38 Top floor slab 27 , 39 Parapet 31 Connection end 33 Slab 36 Projecting body 41 Balcony 42 Body 43 Inner insulation reinforcement 44 Tile 45 Mortar 46 Metal fitting 47 Cement board

Continued on the front page (72) Inventor Kazumitsu Tsubonuma 3-15-7 Higashi, Shibuya-ku, Tokyo Inside Kaiser Co., Ltd. (72) Inventor Shuichi Ueno 1-16-14 Shibuya, Shibuya-ku, Tokyo Tokyu Corporation Inside the formula company (72) Inventor Masahide Aoki 1-16-14 Shibuya, Shibuya-ku, Tokyo Tokyu Construction Co., Ltd. (72) Inventor Daisuke Mutsuro 1-16-14 Shibuya, Shibuya-ku, Tokyo Tokyu Construction Co., Ltd. (72) Inventor Seijiro Mahara 1-16-14 Shibuya, Shibuya-ku, Tokyo Tokyu Construction Co., Ltd. (72) Inventor Kiyoshi Sugino 1-16-14 Shibuya, Shibuya-ku, Tokyo Tokyu Construction F-term (Reference) 2E001 DD01 EA03 FA04 GA12 HA06 HF11 2E162 CA11 DA04 DA09 4G058 GA01 GB02 GC01 GC07 GE04 GE14

Claims (20)

[Claims] 1. A precast concrete plate wherein two concrete plates are joined by truss bars at appropriate intervals, and an air space forming material and a heat insulating material are provided in the gaps. 2. A precast concrete slab according to claim 1, wherein one concrete slab is smaller than the other concrete slabs. 3. The concrete plate according to claim 1, wherein one of the concrete plates is an exterior concrete plate.
The precast concrete plate according to 1. 4. The precast concrete plate according to claim 1, wherein the truss bars located in the gap are covered with a heat insulating material. 5. The precast concrete plate according to claim 1, wherein the truss bars are subjected to a rust preventive treatment or formed of a rust preventive material. 6. A heat insulating material is provided so as to cover a part of the truss bars projecting from the upper surface of the concrete plate, an air layer forming material is provided on the upper surface, and a heat insulating material is provided on the air layer forming material. A method for producing a precast concrete plate, comprising casting concrete. 7. A heat insulating material is provided on an upper surface of a concrete plate from which an upper portion of a truss bar is projected, an air layer forming material is provided on an upper surface of the heat insulating material, and concrete is poured on the air layer forming material. A method for producing a precast concrete plate. 8. A heat insulating material is provided on the upper surface of the concrete plate from which the upper part of the truss bars protrudes, an air layer forming material is provided on the upper surface of the heat insulating material, the concrete plate is turned over, and the truss bars are turned downward. A method for manufacturing a precast concrete plate, comprising inserting truss bars into concrete cast in a formwork. 9. The method for producing a precast concrete plate according to claim 6, wherein the heat insulating material is a sprayed foam resin or a heat insulating mortar. 10. A precast concrete plate for a balcony, wherein a heat insulating material is provided on a joint end face with a frame, and a plurality of connecting bars project from the joint end face. 11. The precast concrete plate for a balcony according to claim 10, wherein the connecting bars are subjected to a rust prevention treatment or formed of a rust prevention material. 12. The precast concrete plate for a balcony according to claim 11, wherein the connecting bars are truss bars. 13. An external heat insulating structure, wherein the precast concrete plate according to any one of claims 1 to 5 is provided between upper and lower slabs or beams in a frame and left and right columns. 14. The method according to claim 1, wherein the outer surface of the pillar in the skeleton is formed on the outer surface of the pillar.
An external heat-insulating structure provided with any one of the precast concrete plates. 15. An external heat insulating structure, wherein the precast concrete plate for a balcony according to claim 10 is attached to an outer surface of a slab or a beam in a skeleton. 16. The precast concrete plate according to any one of claims 1 to 5, wherein the precast concrete plate according to any one of claims 1 to 5 is provided between upper and lower slabs or beams and left and right columns and on the outer surfaces of the columns. 13. An external heat insulating structure to which the precast concrete plate for a balcony according to claim 10 is attached. 17. The precast concrete plate according to claim 13, wherein a beam is placed on the top surface of the inner concrete plate and a balcony is placed on the top surface of the outer concrete plate. 4. The external heat-insulating structure according to 4. 18. The external heat insulating structure according to claim 14, wherein a joint end of the precast concrete plate for a balcony is installed on an upper surface of the slab via a heat insulating material. 19. The external heat insulating structure according to claim 14, wherein a joint end of the precast concrete plate for a balcony is provided on an upper surface of a protruding body from the beam via a heat insulating material. 20. The external heat insulation structure according to claim 13, wherein a parapet is formed on the top floor slab by the precast concrete plate according to any one of claims 1 to 5.