JP2002294896A - Heat insulation pc concrete board and manufacturing method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a PC concrete board having high dimensional accuracy and incorporating a heat insulating material and capable of preventing the occurrence of dew condensation because the heat insulating member is not compressed and a ventilation layer can be ensured on the whole face to provide a manufacturing method therefor. SOLUTION: This PC concrete board is constituted by laminating an external board PC board 1 arranging a seating device 9 having a height equal to a thickness of an external board and having a seat part on an inner side, the ventilation layer 2, the heat insulating material 3, a hole drilled board 6 for bonding the heat insulating material, and an internal board PC board 4 in this order, a connection device passing through hole 8 and a multifunctional hole 15 are formed in the hole drilled board 6, the external board PC board 1 and the internal boar PC board 4 are fixed by a connection device 5 passing through the connection device passing through hole 8, one end of the hole drilled board 6 is fixed to the multifunctional hole 15 of the hole drilled board, and the other end thereof passes through the heat insulating material 3 to abut a tip of a spacer bolt 7 protruding by a ventilation layer length 71 on the seat part 91 of the seating device 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat-insulated PC (precast) concrete plate to be attached to walls, columns, beams, and the like of buildings such as apartment houses and hospitals in consideration of external heat insulation, and a method of manufacturing the same.

[0002]

2. Description of the Related Art In winter, many homes suffer from dew condensation on their walls. Invisible condensation inside the walls leads to the occurrence of mold and allergies, so external insulation methods to prevent them are attracting attention. Since the walls of buildings such as houses and hospitals are completely wrapped from the outside with a heat insulating material, there is an effect that the buildings last longer. As such an external heat insulation method, various techniques have been proposed for attaching a heat-insulated PC board manufactured in advance to a wall of a building or the like.

Conventionally, a two-layered heat-insulating PC board is usually provided with a first-layer concrete and then directly laying a grooved heat-insulating material on fresh concrete to cast a second-layer concrete. ing. As a result, P which becomes the outer panel of the building
A laminate of the C board, the ventilation layer, the heat insulating material, and the PC board serving as the inner board located on the building side is formed in this order.

[0004]

However, in the conventional method for manufacturing a two-layer heat insulating PC board, the heat insulating material is compressed when the second layer of concrete is cast, so that the performance of the heat insulating layer deteriorates. Further, although the ventilation layer is formed by the groove, it is partial, and the ventilation layer is inferior in terms of air permeability to the entire ventilation layer.
Further, the thickness of the second layer of concrete tends to increase due to the shrinkage of the heat insulating material, and the dimensional accuracy and weight management become insufficient.

Accordingly, an object of the present invention is to provide a heat-insulating PC concrete plate having high dimensional accuracy with no dew condensation, since the heat-insulating material is not compressed and a ventilation layer can be secured on the entire surface. It is another object of the present invention to provide a method of manufacturing a heat-insulated PC concrete plate that can simplify the work in a PC factory and shorten the construction period while securing the entire ventilation layer without compressing the heat insulating material.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and comprises a precast concrete plate having a stool having a height equal to the thickness of the outer plate and having a seat portion on the inside. A layer, a heat insulating material, a perforated plate for adhering the heat insulating material and an inner plate precast concrete plate are laminated in this order, and the perforated plate is formed with a through hole and a multifunctional hole for a connector, and the outer plate The precast concrete plate and the inner plate precast concrete plate are fixed by a connecting tool passing through the connection through hole, and the perforated plate is fixed at one end to a multifunctional hole of the perforated plate and the other end penetrates the heat insulating material. The present invention provides an insulated PC concrete board that is installed by bringing the tip of a spacer bolt having a protruding ventilation layer into contact with the seat of the stool. This insulated PC concrete plate is made of perforated plate and outer plate P with perforated plate and spacer bolt.
Since the heat insulating material layer and the gas permeable layer are formed between the C plate and the heat insulating material, the heat insulating material is not compressed, a low-cost, high-performance soft heat insulating material can be used, and the entire air permeable layer can be secured. There is no condensation and dimensional accuracy is high. Also, the connection between the outer plate and the inner plate is only about 4 to 8 connecting members, and the heat loss due to the heat bridge can be minimized.

Further, according to the present invention, a stool, a connector and a mesh-like outer plate wall are arranged at predetermined positions on the bottom of a box-shaped form having an open top, and then concrete is poured into the outer form. A first step of forming a plate, a heat insulating material is previously adhered to the outer surface on the outer plate formed in the first step, and further, a spacer bolt which penetrates the heat insulating material and has a ventilation layer projecting outward. , And a perforated plate with a connecting tool through hole formed,
A second step of arranging the connection tool so that the tip of the spacer bolt is in contact with the seat of the stool while passing the connection tool through the connection tool through-hole; A method for manufacturing a heat-insulated PC concrete plate, comprising: arranging an inner-plate wall streak, fixing the mesh-shaped inner-plate wall streak and the connector, and then performing a third step of forming an inner plate by pouring concrete. Things. According to this method, since a perforated plate to which a heat insulating material is bonded is used in advance, the manufacturing process can be simplified, manufacturing can be performed one cycle per day, and the manufacturing cost can be reduced.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a heat-insulated PC concrete board according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a cross-sectional view showing a part of a heat-insulated PC concrete plate of the present embodiment, FIG. 2 is a perspective view of a stool, FIG. 3 is a perspective view of a perforated plate to which a heat insulating material is adhered, FIG. 4 is an installation state view of the connecting tool, and FIG. 5 is an exploded perspective view of the hanging fitting. In FIG. 1, a heat insulating PC concrete board 10
Is a perforated plate for adhering a precast concrete plate 1, a ventilation layer 2, a heat insulating material 3, and a heat insulating material 3 on which a stool 9 having the same height as the thickness of the outer plate 1 and having the seat portion 91 inside is arranged. 6 and the inner plate precast concrete plate 4 are laminated in this order. 4 is a connecting through hole 8
And the perforated plate 6 is
The spacer bolt 7 is fixed to the multifunctional hole 15 and is provided by abutting a tip end 72 of the spacer bolt 7, which penetrates the heat insulating material 3 and protrudes from the ventilation layer 3, to the seat portion 91 of the stool 9. On the outer surface of the PC board 1 serving as an outer panel of the building, tiles 18 and the like 18 arranged as needed are additionally provided.

The stool 9 has a plate-shaped seat portion 91 and legs 92, 92 having notches at the front end to minimize the contact portion.
There is no particular limitation so long as it is composed of a lounge chair or a short chair. The height of the stool 9 is the same dimension as the thickness of the outer PC board 1 and serves as a ruler when the outer PC board 1 is cast. Tip 7 of bolt 7
2 forms a portion 93 in contact. In the present embodiment, the portion where the tip of the spacer bolt 7 contacts is the seat portion 91.
And the upper surface of the rivet for joining the leg portion 92, but is not limited to this, and may be any position on the upper surface of the seat portion 91.

The perforated plate 6 is provided with a through hole 8 for loosely fitting the connecting member 5 to the flat plate, and a multifunctional hole 15 to which the spacer bolt 7 and the hanging metal member 16 are fixed. is there. The heat insulating material 3 is adhered to the outer surface of the perforated plate 6 with an adhesive or the like, one end of which is fastened to the multifunctional hole 15 with a nut, and the other end penetrates the heat insulating material 3 and the ventilation layer 71 protrudes. Spacer bolt 7 is attached. In addition, a hanging bracket 16 for adjusting a level of a perforated plate 6 described later may be attached to the multifunctional hole 15. For example, as shown in FIG. 5, the hanging bracket 16 includes a top plate 162 provided with a cap nut portion 163 and a rod member 161 having a male screw formed at the tip.
3 is passed through the multifunctional hole 15, and the bar member 161 is fixed from the inside of the perforated plate 6 by screwing. A large number of multifunctional holes 15 are formed in the perforated plate 6, and when the spacer bolts 7 and the hanging brackets 16 are not installed, the holes function as ventilation holes for escaping moisture from the inside, and further enhance the adhesion to concrete. Has functions. The number of spacer bolts 7 to be installed is determined as appropriate. If too large, the dimensional accuracy is increased, but the heat insulating effect is weakened. If too small, the heat loss can be suppressed, but the holed plate 6 is supported. The strength is reduced, and the hanging bracket 16 is installed. The material of the perforated plate 6 is not particularly limited, but a mortar plate can be used.

The distal end of the spacer bolt 7, one end of which is fixed to the perforated plate 6 and the other end of which penetrates the heat insulating material 3 and protrudes from the ventilation layer 71, is brought into contact with the seat 93 of the stool 9. The ventilation layer 2 is formed between the heat insulating material 3 and the outer PC board 1. With such a structure, the heat insulating material is not compressed, and a cheap and high-performance soft heat insulating material can be used. In addition, since the outer PC board 1 and the heat insulating material 3 can be provided with a substantially completely separated air-permeable layer, dew condensation does not occur and contamination of the exterior material due to generation of mold due to dew condensation is prevented. be able to. Further, the dimensional accuracy is increased.

The connecting member 5 is for fixing the outer plate PC plate 1 and the inner plate PC plate 4 through the through hole 8 of the perforated plate. In this example, a hollow square member made of stainless steel or carbon fiber is used. In the outer plate PC board 1, the anchor bar 17a and the mesh-shaped wall bar 12 which have been joined to the connector 5 in advance are bound, and the inner bar PC bar 4 is retrofitted. Anchor bars 17b and mesh-shaped wall bars 13a are fixed by binding. In the heat-insulating PC board of FIG. 1, the inner PC board 4 has a thickness, so that two mesh-like wall reinforcements 13a and 13b are laid, but the joint with the anchor reinforcement 17b is connected to the other mesh-like wall reinforcement 13b. It may be. The hollow portion of the connecting member 5 may be made of concrete or heat insulating material, but it is preferable that a heat insulating material is inserted at a level corresponding to the surrounding heat insulating material 3 in order to enhance the heat insulating effect. In addition, the gap between the connecting member 5 and the holed plate 6 can be sealed with a neck-wound form frame 14 whose inner peripheral shape is substantially the same as the outer peripheral shape of the connecting member 5, thereby preventing spillage during concrete casting. Is preferred. It is preferable to provide a mortar spacer 51 on the outer end surface of the connecting tool 5 in order to prevent external heat from being transmitted to the connecting tool 5 and to secure a cover thickness for fire resistance. .

Next, a method for manufacturing the heat-insulated PC concrete board of this embodiment will be described with reference to the drawings. Insulated PC of this example
The concrete plate can be manufactured by performing the following first to third steps. That is, the first step is
At a predetermined position on the bottom of the box-shaped form 11 whose upper side is open,
This is a step of arranging the stool 9, the connecting tool 5, and the mesh-like outer plate wall streaks 12 and then pouring concrete to form the outer plate 1. The arrangement of the stool 9 on the bottom of the formwork 11 is, for example, as shown in FIG. Can be used. In the vertical arrangement, a connecting device 5
Is placed, a space for the connecting tool 5 is opened. When the stool 9 intersects with the mesh-like outer wall 12, the mesh-like outer wall 12 is sunk under the stool 9. The connecting tool 5 is an upper anchor bar 17b.
Is installed on the mortar spacer 51 in a state where the anchor bars 17a are removed, and the anchor studs 17a which are previously joined to the connecting device 5 below are attached.
And the mesh-like outer panel wall streaks 12 are bound. The concrete is poured to the height of the stool 9 and the stool 9 plays a role of a ruler, so that an accurate thickness of the outer plate can be secured. Conventionally, after the concrete was cast, steam curing was performed and the concrete was hardened, and the process was moved to the next process.However, in this example, the spacer bolt fixed to the perforated plate was in contact with the stool, and the concrete was dried dry. Even in the state described above, the process can be shifted to the next step, and the manufacturing time can be further reduced. In the first step, when a tile is attached to the outside of the outer panel 1, the tile is laid in advance on the bottom of the form 11, and then the stool 9 and the mesh-shaped outer panel wall streaks 8 are provided.
Should be arranged.

In the second step, the outer plate 1 made in the first step
On the upper side, the heat insulating material 3 is previously bonded to the outer surface, one end of the spacer bolt 7 is fixed, and the perforated plate 6 having the other end protruding is connected to the connector through hole 8 of the perforated plate 6. In this step, the heat insulating material 3 and the gas permeable layer 2 are formed at the same time by disposing the tip 5 of the spacer bolt 7 in contact with the seat portion 91 of the stool 9 while inserting the tool 5. The perforated plate 6 is as described above. That is, the heat insulating material 3 is adhered to the outer surface of the perforated plate 6 with an adhesive or the like, one end of the heat insulating material is fastened to the multifunctional hole 15 with a nut, and the other end penetrates the heat insulating material 3 and passes through the ventilation layer 71. A spacer bolt 7 projecting therefrom is provided. The perforated plate 6 having such a structure performs the function of a formwork. However, when the spacing between the spacer bolts 7 is wide, the perforated plate 6 is lifted using the hanging metal fittings 16 and concrete is poured. The bending of the holed plate 6 due to the above is prevented. That is, before attaching the heat insulating material 3, the hanging bracket 16 is attached to the multifunctional hole 15, the hole plate 6 with the spacer bolt 7 is set, and then the hanging bracket 16 is fixed to a fixing device outside the formwork. Good. Next, the perforated plate 6
In order to fill the gap 81 formed between the connecting tool 5 and the connecting tool 5, the neck winding formwork 14 is inserted from above the connecting tool 5 and installed. Since the neck-wound formwork 14 is a rectangular flange, it can be installed as it is, and welding or the like is unnecessary.

In the third step, the mesh-like inner plate wall reinforcements 13a and 13b are arranged at predetermined positions above the perforated plate 6, the mesh-like inner plate wall reinforcements 13a and the connector 5 are fixed, and then the concrete striking is performed. This is the step of forming the inner plate. In this third step, the anchor bar 17b of the connecting tool 5 is attached,
The connecting member 5 is fixed by binding the anchor bar 17b and the mesh-shaped inner plate wall bar 13a. Since the upper anchor bar 17b of the connecting tool 5 is initially removed, the attachment of the mesh-shaped inner plate wall bars 13a and 13b is easy. It is preferable to carry out steam curing after casting the concrete, since the curing can be accelerated and the production time can be shortened. The steam curing may be performed by covering the upper surface of the mold 11 with a sheet and keeping the surroundings of the concrete in a steam atmosphere for several hours. Finally, unnecessary portions of the hanging fittings protruding from the outer PC board are cut.

FIG. 7 shows a manufacturing process chart of the external wall heat insulating PC concrete board for external heat insulation. It takes about 2 hours from demolding to setting of the formwork, and about 4 hours or more for manufacturing the outer PC board. In the manufacturing process of the outer PC board, a spacer bolt, a suspension fitting, and a heat insulating material can be attached to the perforated plate separately in parallel. The next process of manufacturing the inner PC board takes about three and a half hours, and then the curing process is started until the next morning. Thus, the manufacture of insulated PC concrete boards
It can be performed relatively easily and in a short period of time within one day in a PC factory. The insulated PC concrete board manufactured by the above method has, for example, both a height and a width dimension of 3 to 4 m. Attach to walls, pillars, beams, etc. of buildings such as hospitals.

[0017]

According to the heat-insulating PC concrete plate of the present invention, the heat-insulating material is compressed because the heat-insulating material layer and the ventilation layer are formed between the hole-forming plate and the outer PC plate by the hole-forming plate and the spacer bolt. Inexpensive, high-performance soft heat insulating material can be used without any condensation, and a ventilation layer can be secured on the entire surface, so that dew condensation does not occur and dimensional accuracy is high. Further, the connection between the outer plate and the inner plate is made only by the connecting member, and heat loss due to the heat bridge can be minimized. Further, according to the method for manufacturing a heat-insulated PC concrete plate of the present invention, a perforated plate to which a heat insulating material is bonded is used in advance, so that the manufacturing process is simplified.
One cycle per day can be manufactured, and the manufacturing cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a part of a heat-insulated PC concrete board of the present embodiment, with a part cut away.

FIG. 2 is a perspective view of a stool.

FIG. 3 is a perspective view seen from the back surface of a perforated plate to which a heat insulating material is adhered.

FIG. 4 is an installation state diagram of a coupling tool.

FIG. 5 is an exploded perspective view of the hanging fitting.

FIG. 6 is a view showing a state in which a stool is arranged on a frame.

FIG. 7 is a manufacturing process chart of an external heat insulating PC concrete board for external heat insulation.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 PC concrete board which is an outer board 2 Ventilation layer 3 Insulation material 4 PC concrete board which is an inner board 5 Connecting tool 6 Perforated board 7 Spacer bolt 8 Through hole 9 Stool 10 Insulated PC concrete board 11 Formwork 12 Outer board wall 13a, 13b Inner plate wall reinforcement 14 Neck winding frame 15 Multifunctional hole 16 Hanging bracket 17 Anchor reinforcement 18 Tile 71 Spacer bolt protrusion (for ventilation layer) 72 Spacer bolt tip 91 Seat

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Toshiyuki Yagi 4-10-29-203 Takahama, Mihama-ku, Chiba-shi, Chiba (72) Inventor Kenji Doi 1-1-12 Ueno-Higashi, Toyonaka-shi, Osaka Person Toshio Mitsuda 1080-5 Komahane, Sawamachi, Sarushima-gun, Ibaraki Prefecture (72) Inventor Takamasa Sekiguchi 1745 Shimonumabe, Nakahara-ku, Kawasaki-shi, Kanagawa F-term (reference) 2E001 DB02 DB05 DD01 DH12 DH23 FA01 FA02 FA03 GA12 GA18 GA29 GA32 GA42 GA66 HA04 HB02 HB03 HF11 KA01 2E162 BA02 BB10 CA08 CA11 CA38 CB16

Claims (4)

[Claims] 1. A precast concrete plate having a stool having the same height as the thickness of the outer plate and having a seat inside, a perforated layer, a heat insulating material, a perforated plate for bonding the heat insulating material, and a precast inner plate. Concrete plates are laminated in this order, and the perforated plate is formed with a through hole and a multifunctional hole in the connecting plate, and the outer precast concrete plate and the inner precast concrete plate pass through the connecting through hole. The perforated plate is fixed with a connector, and one end of the perforated plate is fixed to the multifunctional hole of the perforated plate, and the other end of the perforated plate is penetrated by a heat insulating material and the end of a spacer bolt protruding is attached to the perforated plate. A heat-insulated PC concrete board, which is installed by being brought into contact with a seat. 2. The connecting member according to claim 1, wherein the connecting member is a hollow timber, and is fixed to a wall of a precast concrete plate of the outer plate and a wall of a precast concrete plate of the inner plate. Insulated PC concrete board. 3. A stool, a connector, and a mesh-like outer plate wall are arranged at predetermined positions on the bottom of a box-shaped formwork whose upper side is open, and then concrete is cast to form an outer plate. In the first step, on the outer plate formed in the first step, a heat insulating material is bonded in advance to an outer surface, and further, a spacer bolt which penetrates the heat insulating material and has a ventilation layer projecting outward is fixed. And a second step of arranging a perforated plate having a connector through-hole formed therein, such that a tip of the spacer bolt abuts on a seat of the stool while inserting the connector into the connector through-hole. A third step of arranging a mesh-like inner plate wall streak at a predetermined position above the perforated plate, fixing the mesh-like inner plate wall streak and the coupler, and then pouring concrete to form an inner plate; Production of a heat-insulated PC concrete plate characterized by performing Law. 4. Before bonding a heat insulating material to the perforated plate,
A hanging bracket is fixed to the perforated plate so that the tip of the hanging bracket projects inward. After the second step, the hanging bracket is fixed to an external fixing device, and then a third step is performed. 4. The method for producing a heat-insulated PC concrete plate according to claim 3, wherein: