JPH08246609A - Roof structure - Google Patents

Abstract

PURPOSE: To obtain a roof having excellent waterproofing and fire-resistant properties, by laminating a fire-resistant material, an organic and an organic- inorganic mixed heat-insulation material, and a waterproof sheet in turn on a metallic folded plate 1. CONSTITUTION: A metallic folded plate 1 with a wave-shape section is fixed to a metallic beam 6 of a ceiling and a fire-resistant material 2 like a cemented excelsior board, a plaster board, an asbestos slate, etc., is laid on the metallic folded plate 1. An organic heat-insulation material made of a plastic or a rubber foam material or an organic-inorganic mixed heat-insulation material 3 like mortar containing beads-foamed polystyrene or vinylchloride foamed body containing calcium carbonate is laminated on the fire-resistant material 2. And further, a water-proof sheet 4 like a synthetic resin waterproof sheet, a synthetic rubber waterproof sheet, or an asphalt sheet, is laminated on the heat-insulation material 3. Accordingly, this roof is excellent in heat-insulation and durability and the construction period can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof structure using a metal folded plate, and more particularly to a roof structure using a metal folded plate base having excellent heat insulating properties, waterproof properties, fire resistance and workability. .

[0002]

2. Description of the Related Art Conventionally, there are various types of roofing materials for buildings, and in many buildings such as factories, warehouses, and gymnasiums, a metal folding plate is used as the roof. These roofs generally have a structure in which a metal folding plate is used as it is as a roofing material, or concrete is cast on the metal folding plate and then waterproofed.

[0003]

A folded plate roof using a folded metal plate has a waterproof treatment around the joints of the folded plates and around the fixing metal fittings, but this waterproofness is not perfect. ,
Since it is only a folded plate, there was a problem with heat insulation.

In order to improve the heat insulating property of the roof using the above-mentioned metal folded plate, an inner heat insulating construction method has been performed in which a heat insulating layer is provided on the lower surface of the metal folded plate, that is, on the indoor side. In this case, there is a problem such as dew condensation on the indoor surface of the body, and dew condensation due to heat bridges at the corners and joints.In cold Hokkaido, etc., the damage caused by dew condensation is remarkable as the heating level improves. It has become a thing.

In order to solve such a problem, it is possible to improve the heat insulating property and waterproof property by adopting an external heat insulating construction method in which a heat insulating material and a waterproof layer such as a waterproof sheet are provided on the upper surface of the metal folding plate. However, if a structure that uses organic or organic-inorganic mixed insulation such as plastic foam, which has excellent heat insulation properties, or a waterproof sheet, if a fire occurs from inside the building, it will be transmitted from the metal folding plate. There is a problem that the heat insulation material and the waterproof sheet are burned by the generated heat and the fire resistance is deteriorated.

Further, it is possible to improve the fire resistance by spraying a refractory material on the back surface of the metal folded plate so that the thickness becomes 20 mm or more, or by adhering it in advance. Has a problem that the working environment deteriorates and it takes time to dry.If it is pasted, it is difficult to fix the metal folding plate to the beam by tacks or welding if the refractory material is thick. The folded plate was bulky and deteriorated in transportability and workability.

Further, in the case of a roof in which concrete is cast on a metal folding plate, there is no problem in fire resistance, and an organic or organic-inorganic mixed type heat insulating material or waterproof sheet is provided on the concrete. Although it is possible to improve the waterproofness and heat insulation by providing a waterproof layer, the work of driving concrete on a metal folded plate depends on the weather,
This was a method with long workability and poor workability because it had to go through a process of pouring concrete into the formwork for curing and then removing the formwork.

Further, since concrete has a heavy weight, in order to support the weight, it is necessary to increase the number of columns and beams so as to have a structure excellent in load resistance, which makes the structure complicated and the workability is low. Not only did it worsen, but it was also economically disadvantageous. Therefore, an object of the present invention is to solve the above-mentioned problems of the prior art, and to provide a roof structure using a metal folded plate which is excellent in heat insulation, waterproofness, fire resistance, workability and economy. .

[0009]

The above object can be achieved by the present invention described below. That is, the present invention is a roof structure characterized in that a refractory material, an organic and / or organic / inorganic mixed heat insulating material, and a waterproof layer are sequentially laminated on a metal folded plate.

[0010]

According to the present invention, the outer insulation method for a roof using a metal folding plate is possible, and a metal folding plate roof excellent in heat insulation, waterproofness, fire resistance, etc. can be constructed very easily. Can be done.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in more detail based on the preferred embodiments shown in the drawings. In the roof structure of the present invention, as shown in the partial cross section of FIG. 1, a refractory material 2, an organic or organic-inorganic mixed heat insulating material 3, and a waterproof layer 4 are sequentially laminated on a metal folded plate 1. It is characterized by that.

The metal folding plate used in the present invention is a long metal folding plate having a corrugated cross section, and the material thereof is a zinc iron plate,
Commonly used are hot-dip aluminum plated steel sheets, stainless steel sheets, and steel sheets coated with vinyl chloride resin, but the invention is not limited to these, and any type of metal folding plate conventionally used as a roofing material can be used. It can be anything. The thickness of these metal folding plates is generally 0.5 mm to 2.5 mm.

In the present invention, as shown in FIG. 2, a fireproof coating layer 5 having a thickness of 15 mm or less may be previously provided on the lower surface of the metal folding plate 1 in order to further improve the fireproofness of the roof structure. It is possible. If the thickness of the fireproof coating layer is 15 mm or less, it is possible to apply a fireproof coating to a folded plate in advance at a factory or the like to form a folded plate shape. Also, the fire resistance of the roof structure can be further improved by the refractory material provided on the upper surface of the metal folded plate without lowering the workability.

The refractory material used in the present invention is, for example, JIS.
A quasi-incombustible material that passes Class 2 in the flame retardant test of A1321 and has the same or higher performance is preferable. Examples of such materials include gypsum board, wood wool cement board,
Examples include wood chip cement board, cement molded board, asbestos slate, calcium silicate board, plaster, stone, brick, rock wool and the like. Among these, lightweight board-like materials such as wood wool cement board, wood chip cement board, gypsum board, and asbestos slate are preferable in terms of workability in attaching to a metal folding board. If the refractory material is thin, sufficient fire resistance cannot be obtained.
20 minutes is preferable because it may not pass fire resistance for 0 minutes.
mm or more. The size and shape of the refractory material is not particularly limited, but in the case of a board shape, the length and width are 500 mm to 2000 m.
Generally, a rectangular shape of about m is used.

As the heat insulating material used in the present invention, there may be mentioned an organic heat insulating material made of plastic or rubber foam, an organic / inorganic mixed heat insulating material such as mortar containing beads expanded polystyrene and calcium carbonate mixed vinyl chloride foam. . The organic or organic-inorganic mixed type heat insulating material is superior in heat insulating property to the inorganic heat insulating material, and can improve the heat insulating property of the metal folded plate roof. It is preferable to use a board-shaped heat insulating material made of semi-rigid or rigid foam. When these board-shaped heat insulating materials are used, it is difficult to crush the heat insulating material even when tightened with the fixing metal fittings when fixing to the metal folding plate, so it is possible to prevent the fixing metal parts from denting and collecting water, and tightening. The strength is also sufficient.

As the organic heat insulating material, polystyrene foam, urethane foam, isocyanurate foam,
Polyethylene foam, polypropylene foam, polyvinyl chloride foam, phenol foam, etc. can be used. Among them, isocyanurate foam, phenol foam, and those obtained by subjecting other foams to flame-retardant treatment and the like have flame retardancy higher than that of the flame-retardant material. Flame-retardant material here means non-combustible material,
A material having performance equivalent to that of a quasi-noncombustible material, for example, a material equivalent to the performance that passed as a flame-retardant material in the test of the Ministry of Construction Notification (SHO 51 Declaration 1231). It can be used without any problems in performance.

The organic / inorganic mixed heat insulating material is not particularly limited, but it is preferable that the heat insulating material has a flame retardant performance equal to or higher than that of the flame insulating material as in the organic heat insulating material. Examples of the organic-inorganic mixed heat insulating material include mortar containing bead-expanded polystyrene and vinyl carbonate foam containing calcium carbonate. If the heat insulating material is thin, the heat insulating property is poor, and if it is too thick, the workability and transportation are complicated. Therefore, the heat insulating material preferably has a thickness in the range of 25 mm to 50 mm, but is not limited thereto. .
The size of the heat insulating material is not particularly limited, and a rectangular shape having a length and width of 500 mm to 2000 mm is generally used in terms of workability and transportability.

The waterproof layer provided on the heat insulating material comprises a waterproof sheet such as a synthetic resin waterproof sheet, a synthetic rubber waterproof sheet or an asphalt sheet, or a waterproof layer such as a urethane coating film (hereinafter simply referred to as a waterproof sheet). As the material of the waterproof sheet, a synthetic resin such as polyvinyl chloride resin, chlorinated polyethylene, chlorosulfonated polyethylene, or a flame-retarded vulcanized rubber is preferable because it has excellent flame retardancy, but is not limited to this. It is not something that will be done. Further, various additives such as a plasticizer, a stabilizer, a filler, an ultraviolet absorber, an antioxidant and a flame retardant may be appropriately mixed and used with these synthetic resins and synthetic rubbers. The structure of the waterproof sheet may be a single sheet or a laminate of sheets, and it is also possible to laminate a fibrous base material such as glass fiber or polyester fiber on the intermediate layer or the back surface of the sheet to improve dimensional stability. . The waterproof sheet has a thickness of 1 to 3 mm and a width of 1000 to 20.
It is generally, but not limited to, a 00 mm soft long sheet.

The refractory material, the heat insulating material, and the prevention sheet are attached to the metal folding plate by attaching a fireproof material to the upper surface of the metal folding plate, which is tacked or welded to the metal beam of the ceiling.
Insulating material and preventive sheet are stacked one on top of the other, and these are mechanically fixed by fixing metal fittings, or fireproof material and thermal insulating material are mechanically fixed, and then fixed with a preventive sheet and heat insulating material or a preventive sheet and synthetic resin. Although it is general and advantageous in terms of workability that it is carried out by an adhesion method in which the metal fitting is attached with an adhesive or the like, it is not limited to these methods.

More specifically, for example, as shown in FIGS.
As shown in (the double horizontal polygonal line near the center in the figure is an abbreviated line. The same applies in the following perspective views), first, the refractory material 2 and the heat insulating material 3 (in this example, a two-layer laminated body is formed). Exist)
Are laid on the metal folding plate 1, and these are mechanically fixed to the metal folding plate by the fixing brackets 7 from above the heat insulating material. The fixing metal fitting 7 is provided with a disk-shaped metal disk disk 9 on the heads of screws 8 and bolts, and the surface of the disk disk is covered with a synthetic resin. Tighten and fix it to the metal folding plate. Next, the waterproof sheet 4 is laid on one surface on the heat insulating material, and the disc surface and the waterproof sheet back surface are bonded and fixed. At this time, the method for adhering the disc and the waterproof sheet is preferably solvent welding in which the synthetic resin on the surface of the disc and the disk is dissolved and joined by a solvent, and the needle of the syringe containing the solvent penetrates the waterproof sheet. Then, the solvent is applied to the surface of the disc board and the waterproof sheet is adhered and fixed.

The needle hole produced by the syringe is subjected to a water stop treatment with a sealer in which a small amount of a synthetic resin of the same kind as the waterproof sheet is dissolved. When solvent welding is used, it is preferable that the waterproof sheet and the synthetic resin on the disc surface are dissolved in the same solvent, and the waterproof sheet is a chlorine-containing resin such as polyvinyl chloride, chlorosulfonated polyethylene, or chlorinated polyethylene. If the sheet is made of a synthetic resin, it is preferable that the synthetic resin on the surface of the disc be the same chlorine-containing resin. As a solvent for dissolving the chlorine-containing resin, a solvent containing tetrahydrofuran as a main component is preferable because it has the highest solubility.

As another fixing method, as shown in FIGS. 4 and 7, a refractory material 2, a heat insulating material 3 and a waterproof sheet 4 are sequentially laid on a metal folding plate 1 and then, from above the waterproof sheet, These are mechanically fixed to a metal folding plate by a fixing metal fitting 7 having a disk plate attached to the head. Even in this method, the surface of the disk is coated with synthetic resin,
The disk board is covered with a protective cover 10 made of the same kind of synthetic resin as the waterproof sheet, and the fixing metal part is waterproofed. The protective cover is made of a synthetic resin sheet which is slightly larger than the disc board, and is preferably joined to the disc board surface and the waterproof sheet by solvent welding or heat fusion. The term "heat fusion" as used herein refers to a method in which heat such as hot air is applied to melt or soften the synthetic resin to bond it.

Further, it is possible to seal the periphery of the protective cover in order to enhance the waterproof property. Although a disk board coated with a synthetic resin is shown here as an example, it is not always necessary to cover the disk with a synthetic resin, and a disk board composed of only a metal plate can be used, and a protective cover and a disk board are joined together. Can be joined with an adhesive without solvent welding or heat fusion, or the periphery of the protective cover can be joined to a waterproof sheet without joining the protective cover to the disc board, maintaining the watertightness of the fixing bracket. Any joining method may be used as long as it is the above method. These fixing fittings are appropriately arranged and fixed at intervals such that members such as a fireproof material, a heat insulating material, and a waterproof sheet are not blown off by wind pressure. Generally, it is good to fix at an interval of 1 to 2 pieces / m ² .

As another fixing method, as shown in FIGS. 5 and 8, after the refractory material 2 and the heat insulating material 3 are spread on the metal folding plate 1, they are aligned with the allocation width of the waterproof sheet 4. The refractory material 2 and the heat insulating material 3 are mechanically fixed to the metal folded plate 1 from above the heat insulating material 3 by the fixing metal fitting 7 to which the disk board 9 is attached to the same head as above. Next, the end portions of the waterproof sheet are sequentially joined to the disk board 9 of the fixing metal fitting 7 by solvent welding or heat fusion, and the end portions of the adjacent waterproof sheets are overlapped by about 40 mm or more and solvent welding or heat fusion is performed. After joining, they are mechanically fixed again from above the waterproof sheet to the base metal folding plate 1 at a predetermined interval to the central portion in the waterproof sheet width direction by the same fixing metal fitting 7 as described above.
Further, the waterproof treatment of the fixing metal fitting 7 at the position where the waterproof sheet 4, the heat insulating material 3 and the fireproof material 2 are fixed to the metal folding plate 1 by the fixing metal fitting 7 from above the waterproof sheet 4 is the same as the protective cover of the waterproof sheet. After the surface of the disc board 9 and the waterproof sheet are joined by means of 10 by solvent welding or heat fusion, the periphery of the protective cover is sealed.

As a fixing method other than the above, as shown in FIGS. 9 and 10, after the refractory material 2 and the heat insulating material 3 are spread on the metal folding plate 1, the waterproof sheet 4 is spread on it. Then, the waterproof sheet, the heat insulating material 3 and the fireproof material 2 are passed through the metal disc board 9 at a position approximately 38 mm from the lower overlapping end portion of the waterproof sheet, and fixed to the metal folding plate 1. . Fixing bracket 7 consisting of disk 9 and screw 8
It is preferable that the distance is about 230 to 460 mm.
Next, the adjacent waterproof sheets are laid on top of each other by about 115 mm so as to cover the fixed metal disk board 9, and the upper and lower waterproof sheets are evenly arranged with a width of about 38 mm from the end of the upper waterproof sheet. Are fixed by heat fusion.

In addition to this, as shown in FIG. 11, after the refractory material 2 and the heat insulating material 3 are spread on the metal folding plate 1, these are fixed by the elongated plate-like fixing metal fittings 7 covered with synthetic resin. Is fixed to a metal folding plate in line with the allocation width of the waterproof sheet, the end of the waterproof sheet 4 is joined to the surface of the fixing metal fitting 7 by solvent welding or heat fusion, and it is adjacent to the waterproof sheet at the joining portion. Alternatively, a method may be used in which the ends of the waterproof sheets are overlapped with a width of about 40 mm or more and the waterproof sheets are joined by solvent welding or heat fusion.

The refractory material, the heat insulating material and the prevention sheet can be fixed to the metal folding plate by the above-mentioned method, but the mounting method is not limited to these, and for example, as shown in FIG. The waterproof sheet 4 with the adhesive layer 11 as the heat insulating material 3
Any method may be used as long as it can be fixed to a metal folding plate, such as a method of joining to a metal plate. In addition, a method of joining adjacent waterproof sheets to each other is, for example, a method in which end portions of the waterproof sheets are overlapped with each other so that the width is 30 to 120 mm and they are integrally joined by an adhesive, solvent welding or heat fusion. Good, but not limited to this method.

[0028]

EXAMPLES Next, construction examples of the roof structure of the present invention will be described with reference to concrete examples. A metal folding plate having a thickness of 0.8 mm is placed on the beam attached to the roof part, and fixed to the beam by welding or metal tack at intervals of 230 mm. The lateral overlapping portions of the metal folding plates are spot welded or riveted at intervals of 600 mm. The beams were refractory coated for 1 hour. Then thickness 2
A refractory material composed of a wood wool cement board having a length of 5 mm and a length of 1800 mm × 900 mm was placed on a metal folding plate, and an isocyanurate foam board having a thickness of 50 mm and a length of 1800 mm × 900 mm was laid on it. After that, a long waterproof sheet made of a soft vinyl chloride resin in which a glass fiber cloth was laminated in the middle of a thickness of 1.3 mm and a width of 1300 mm was laid on the foam board.

From above the waterproof sheet, a fixing bracket consisting of a disc board of 65 mm in diameter coated with vinyl chloride resin and a self-drill tapping screw is penetrated to the metal folding plate, and the waterproof sheet, the heat insulating material and the fire resistant material are made of metal. It was fixed to a folding plate. In a flat field, they were fixed at an interval of about 1.4 lines / m ² . In addition, the disc cover is covered with a vinyl chloride resin circular sheet with a diameter of about 100 mm, and the disc surface and the waterproof sheet surface are bonded by solvent welding or heat fusion, and the peripheral edge of the protective cover is sealed. did. The adjoining waterproof sheets were joined by solvent welding or heat fusion with the end portions of the waterproof sheets being wrapped by 40 mm. The end of the roof was continuously covered with a ceramic fiber blanket from the end of the metal folded plate. The obtained roof was excellent in heat insulation, waterproofness and fire resistance.

[0030]

As described above, according to the present invention, by providing a roof structure in which a refractory material, an organic or organic-inorganic mixed heat insulating material and a prevention sheet are sequentially laminated on a metal folding plate,
It is possible to provide a roof structure excellent in heat insulation, waterproofness, and fire resistance without hitting concrete on a metal folded plate as in the past. Also, since it is not necessary to drive the concrete into the metal folding plate, the construction period can be shortened, the roof can be made lighter, and it is not necessary to increase the number of columns and beams, and the workability and economy can be improved. Has improved.

Furthermore, since the metal folding plate does not come into direct contact with rainwater, snow, etc., it is possible to suppress the generation of rust and to improve durability and waterproofness.
Further, it has become possible to use an organic or organic-inorganic mixed heat insulating material, and as a result, the heat insulating property is improved and the efficiency of cooling and heating can be improved.

By using a semi-rigid or rigid foam as the heat insulating material, the heat insulating material can be securely tightened and fixed without being dented even if it is mechanically fixed by the fixing metal fittings. Therefore, it is possible to prevent water from accumulating in the fixing metal part. Further, by setting the flame retardant performance of the heat insulating material to be equal to or higher than that of the flame retardant material, it is possible to obtain a structure having more excellent fire resistance even if the fire resistant material is thin. Further, by coating the lower surface of the metal folded plate with a fireproof coating having a thickness of 15 mm or less, the fireproof performance can be further improved without impairing the transportability and workability of the metal folded plate.

Further, in the present invention, the refractory material and the heat insulating material are mechanically fixed to the metal folding plate by the fixing metal fittings so that they are not blown off by wind pressure and the like, and the installation is easy and the construction is easy. It has an excellent roof structure.

[0034]

[Brief description of drawings]

FIG. 1 is a sectional view for explaining a roof structure according to an example of the present invention.

FIG. 2 is a sectional view for explaining a roof structure of another example of the present invention.

FIG. 3 is a sectional view for explaining a roof structure of another example of the present invention.

FIG. 4 is a sectional view for explaining a roof structure of another example of the present invention.

FIG. 5 is a sectional view for explaining a roof structure of another example of the present invention.

FIG. 6 is a perspective view of FIG.

FIG. 7 is a perspective view of FIG.

FIG. 8 is a perspective view of FIG.

FIG. 9 is a sectional view for explaining a roof structure of another example of the present invention.

FIG. 10 is a perspective view of FIG.

FIG. 11 is a perspective view for explaining a roof structure of another example of the present invention.

FIG. 12 is a sectional view for explaining a roof structure of another example of the present invention.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (71) Applicant 000010010 Lonseal Industry Co., Ltd. 4-15-3 Midori, Sumida-ku, Tokyo (72) Inventor Minoru Kondo 2-9-2, Kyobashi, Chuo-ku, Tokyo Industrial Co., Ltd. (72) Inventor Takayoshi Toyama 2-9-2 Kyobashi, Chuo-ku, Tokyo Sanko Kin Metal Industry Co., Ltd. (72) Inventor Ryozo Sawanishi 24-10 Ekicho Suita City, Osaka Prefecture Co., Ltd. Yamade (72) Inventor Takashi Inoue 24-10 Ekicho, Suita City, Osaka Prefecture Yamade Co., Ltd. (72) Inventor Ryoichi Yamabe 24-10 Ekimachi, Suita City, Osaka Prefecture Yamade Co., Ltd. (72) ) Inventor Fumio Kadota 35, 35, Bannokura, Ekemachi, Fukuyama-shi, Hiroshima (72) Inventor Naohiro Sugano 5-3-13 Kotobashi, Sumida-ku, Tokyo Inside Tsutsunaka Sheet Waterproofing Co., Ltd. (72) Inventor, Yukiko Kawashima Sumida-ku, Tokyo Koto Bridge 5-chome No. 3 No. 13 barrel in the sheet waterproof within Co., Ltd. (72) inventor Masami Araki Tsuchiura, Ibaraki Prefecture Higashinakanuki-cho 5-3 Lonseal Corporation Ltd. Tsuchiura workplace

Claims (6)

[Claims] 1. A roof structure comprising a metal folding plate, and a fire-resistant material, an organic and / or organic-inorganic mixed heat insulating material, and a waterproof layer, which are sequentially laminated on the folded metal plate. 2. The roof structure according to claim 1, wherein the heat insulating material is a semi-rigid or rigid foam. 3. The roof structure according to claim 1, wherein the fire-retardant material has a flame-retardant performance of not less than quasi-incombustible material. 4. The roof structure according to claim 1, wherein the flame retardant performance of the heat insulating material is not less than that of the flame retardant material. 5. The roof structure according to claim 1, wherein a fireproof coating having a thickness of 15 mm or less is applied to the lower surface of the metal folding plate. 6. The roof structure according to claim 1, wherein the refractory material and the organic-based and / or organic-inorganic-mixed thermal insulating material are mechanically fixed to the metal folding plate by fixing metal fittings.