JP3047318B2 - Double folded plate roof structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double folded roof structure in which a heat insulating material is interposed between an outer folded roof and an inner folded roof, and in particular, has excellent workability without lowering the heat insulating performance. The present invention relates to a double folded plate roof structure capable of preventing corrosion of a roof plate.

[0002]

2. Description of the Related Art Conventionally, medium- and large-sized buildings such as gymnasiums, factories, warehouses, etc., which require high heat insulating properties, are disclosed in, for example,
There is an insulated double-folded roof in which glass wool is filled as a heat insulating material between an upper roofing material and a lower roofing material as disclosed in Japanese Patent No. 84659. Although such a double-folded plate roof is naturally expected to have high heat insulating properties, it has the following problems. Glass wool is moistened if unexpected leakage occurs or the internal condensation occurs on the roofing material (outside folded shingle). This fiber-based heat insulating material such as glass wool has the property that the heat insulation performance is remarkably deteriorated by water wetting, and has high water retention, so if unexpected leakage or internal condensation occurs, the water wetting and water retention area expands. As the time elapses, the deterioration of the heat insulation performance is promoted. Usually, glass wool used for a double folded plate roof is low in density so as not to cause a defect in heat insulation performance, and a roll-shaped flexible one is used at the time of transportation. It is extremely difficult to lay “stiff” glass wool without gaps.

In order to solve the problem of workability,
As a heat insulating board (foamed plastic molded article) molded so as to match the cross-sectional shape of the gap between the upper and lower folded plates, a double folded plate roof disclosed in Japanese Utility Model Publication No. 7-40571 is used. is there.

[0004]

However, a double-folded roof using the above-mentioned heat insulating board has the following problems. The insulation board formed so as to conform to the cross-sectional shape is laid (superimposed) with no gap between the folded roof plate and the folded bottom plate, so if unexpected water leakage or internal dew condensation occurs, the moisture is removed from the folded roof plate or There was a risk of being held in the gap between the folded shingle and the capillarity, making it difficult to flow down to the eaves side, but rather spreading over a wide area and causing water leakage from the folded shingle. Furthermore, since water retention due to the capillary phenomenon is not easily eliminated, high humidity conditions are maintained for a long period of time even if water leakage does not immediately occur, and the corrosion of the back surface of the folded upper plate and the surface of the folded lower plate is promoted. there were. In addition, the folded shingles and the folded shingles are generally roll-formed at the site as long materials that are approximately equal to the length of the eaves of the building. Distortion such as warpage is likely to occur in the length direction due to characteristics and unloading work. Therefore, when the heat insulating material is formed into a shape having no gap so as to conform to the cross-sectional shape, there is a problem that the workability is rather deteriorated and a pocket wave is generated on the surface of the folded roof plate after the work. .

[0005]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above circumstances, and has a double folded plate roof structure in which a heat insulating material is interposed between an outer folded plate roof and an inner folded plate roof. The outer folded plate roof is formed of an outer folded plate roof plate having a side portion in which the left and right side edges of the face plate portion are raised outward and upward, and has a structure in which a valley portion and a mountain portion are continuous in the left and right direction in a construction state. The heat insulating material is made of a water-impermeable material or a material having at least an upper surface side made of a water-impermeable material, and is formed into a shape similar to a space between the outer folded-plate roof and the inner folded-plate roof, and the valley portion is formed. The present invention relates to a double-folded plate roof structure characterized by forming a drainage gap communicating with the eaves ridge direction on the upper surface side.

The present invention also relates to a double-folded roof structure in which a heat insulating material is interposed between an outer-folded roof and an inner-folded roof, wherein the outer-folded roof has left and right side edges of a face plate portion. It is a structure in which a valley and a mountain are continuous in the left-right direction in the construction state, and the heat insulating material is a non-permeable material, or Drainage made of a material whose surface is impervious and formed into a shape approximating the space between the outer folded roof and the inner folded roof, and communicating with the valley upper surface and the valley lower surface in the eaves ridge direction The present invention also proposes a double-folded-plate roof structure in which a gap is formed.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION A double-folded roof structure of the present invention generally comprises a heat-insulating material having a specific shape between an outer-folded roof (1) and an inner-folded roof (2). A material that forms a drainage gap only on the upper surface side of the used valley portion is referred to as a heat insulating material 3, and FIG.
The heat insulating material 8 is used to form drainage gaps on both the valley upper surface side and the valley lower surface side used in the roof structure such as 3).

The outer folded shingle 1 used for the outer folded shingle roof basically has a face plate portion 11 at the center and side portions 12 inclined upward and outward on the left and right side edges. Formed from well-known metal materials such as surface decorative steel plate, laminated steel plate, plated steel plate, stainless steel plate, aluminum alloy plate, titanium alloy plate, copper plate, brass plate, lead plate, carbon fiber laminate plate, hard resin plate, etc. Is a metal plate, it is formed (formed) by roll forming, press forming, or a combination of both. When the material is a non-metal material, it is mainly formed by molding. The thickness of the material is not particularly limited, but is generally about 0.4 to 1.6 mm. The outer folded shingle 1 may be factory-produced into a fixed length material of about 3 to 10 m, carried into the site, and connected and constructed by a known connecting means such as lap joint or sealing. In the case where the fixed length material is used as described above, the product accuracy can be maintained at a high level in the production in the factory, so that the required performance of the roof slab such as the strength and the rain finish can be exhibited at a high level. On the other hand, a long material formed in-situ has many deformation elements associated with unloading and handling. In addition, due to transportation and installation, molding machines for on-site molding must be simpler than molding machines dedicated to factory installation, so on-site molding machines are inferior to factory-installed molding machines in terms of accuracy control. . In addition, a water stopping function such as a rib or a packing may be provided to the overlapping portion (edge) in the eaves ridge direction of the fixed-length material as a measure against rain. The left and right joining structures (roofing type) are not particularly limited. For example, a known roofing type such as a lap type (polymerized bolt tightening type), a seam tightening type, a fitting type, or a composite type thereof is appropriately used. Can be selected. The outer folded shingle 1 used for the double folded roof structure of FIG.
2 is bent outwardly in a substantially horizontal shape, and the tip is bent outward and downward to form a overlap piece 121. The overlap pieces 121, 121 of the outer folded shingles 1, 1 adjacent to the left and right are formed. Joining is performed by polymerizing and bolting (holding fitting 4A). In addition, a backing material such as polyethylene foam may be attached to the back surface of the outer folded shingle 1 for the purpose of preventing dew condensation and soundproofing.

The inner folded roof includes an existing folded roof, and the inner folded roof 2 used for the inner folded roof is basically provided with a face plate at the center similarly to the outer folded roof 1. 21
Is formed on the left and right side edges thereof in such a manner as to have a side portion 22 which rises obliquely outward and upward, and is similarly formed of the same material as that described in the description of the outer folded shingle 1. Can be. The inner folded shingle 2 used in the double folded shingle roof structure of FIG. 1 is exactly the same as the outer folded shingle 1 in FIG. The superposed pieces 221 and 221 of the shingle roof plates 2 and 2 are joined by bolting and bolting (holding fitting 4B). In addition, a glass fiber-based fire lining material may be provided on the back surface of the inner folded shingle 2 for fire protection.

The heat insulating materials 3 and 8 are formed into a shape approximating the space between the outer folded shingle 1 and the inner folded shingle 2, and the heat insulating material 3 is placed on the upper side of the valley. The structure in which the drainage gap 31 communicating in the ridge direction is formed, and the heat insulating material 8 is provided with drainage gaps 81A and 81 on the valley upper surface side and the valley lower surface side, respectively.
B is formed, and the surface of a water-impermeable material such as styrene, urethane, or phenol, or a known fiber-based heat insulating material is covered with a film of polyethylene or PVC (at least in the heat insulating material 3). It is made of a material that has been subjected to a water-impermeable treatment, such as covering the upper surface side and covering the entire surface with the heat insulating material 8. The foamed resin-based heat insulating materials 3 and 8 are:
From the standpoint of fire protection and heat resistance, it is desirable that the polymer has self-extinguishing properties or has higher performance. In the double folded plate roof structure of FIG. 1, a heat insulating material 3 having a drainage gap formed only on the upper surface side of the valley is used.
Is a shape similar to the space between the outer folded shingle 1 and the inner folded shingle 2 except for the valley portion, and the portion corresponding to the valley portion is formed to be thinner than the space width, In this configuration, a drainage gap 31 is formed.

The construction of the double folded plate roof structure shown in FIG. 1 is generally performed in the following procedure. First, a continuous square wave-shaped inner folded plate receiving metal fitting (tight frame) 4C is mounted on a steel frame base 5 such as a beam or a purlin, and the inner folded metal roof plate 2 is laid thereon. It is fixed integrally to the folded plate receiving bracket 4C. Next, the outer holding member 4A is integrally fixed to the inner holding member 4B located at the mountain portion of the formed inner folded plate roof. Then, the heat insulating material 3 is laid on the inner folded roof, and the outer folded roof 1 is laid and fixed similarly to the inner folded roof 2. The head of the outer holding fitting 4A is subjected to non-permeability treatment by packing or sealing material. Note that, in the double-folded-plate roof structure of FIG. 1, the inner folded-plate receiving bracket 4C, the inner-side retaining bracket 4B, and the outer-side retaining bracket 4A are used as holders for holding the folded-plate roof. The tight frame, the heat-insulating bolts, the heat-insulating holding fittings, and the like may be used in accordance with the roof type of the folded-plate roof, and the configuration thereof is not particularly limited. These holders are usually 1.2
A pressed product such as a stainless steel plate or a plated steel plate having a thickness of about 2.3 mm is used. In addition, the base 5 is generally made of a steel frame such as a beam or a purlin as described above, but is not limited to this. For example, a steel frame or a wooden hut may be formed on a concrete structure. However, the inner folded plate receiving bracket 4C may be directly attached to the concrete surface on which the groundwork has been adjusted. Therefore, it is possible to use all the building frames to which the inner folded plate receiving member 4C can be attached by fixing means such as nails, screws, anchors, welding, etc. Includes all bases on which boards are laid.

In the double-folded roof structure of FIG. 1, since the heat insulating material 3 does not absorb water, even if unexpected leakage or dew condensation occurs on the outer folded-plate roof, the heat insulation performance may be deteriorated. Absent. In addition, since the drainage gap 31 is formed which hardly receives direct external pressure such as storms acting on the roof surface, water leakage and dew condensation water can flow quickly to the eaves side, and further water leakage due to the capillary phenomenon. And corrosion of the outer folded shingle 1 can be prevented. Therefore, it is possible to provide a roof structure capable of double raining without the possibility of water leakage or corrosion. Further, the heat insulating material 3 is formed in an approximate shape of the space between the inner folded plate roof and the outer folded plate roof. However, since the heat insulating material 3 is not laid without a gap as in the prior art, the outer folded plate roof is not provided. Even if there is a molding distortion or a frame error in the board 1 or the inside folded roof sheet 2, the work of laying the heat insulating material 3 can be easily performed, and further, the design property of the outside folded sheet roof is reduced due to the above factors. Nothing.

Further, since the drainage gap 31 is large enough to allow air to flow by natural convection, if an exhaust port of an appropriate size is provided on the ridge side, the drainage gap 31 can serve as a circulation space for removing moisture in the roof structure at an early stage. Can also be used. Further, the heat insulating material 3 is provided on the back of the outer folded shingle 1 or the inner folded shingle 2.
If it is previously integrated with the surface, the man-hour for laying work is reduced, and the workability is improved. Furthermore, since water does not infiltrate into the back surface of the heat insulating material 3, the inner folded roof does not necessarily have a rain-closing function. For example, holes for sound absorption are formed in the inner folded roof 2 at appropriate intervals. A large number may be provided. In this case, the double folded plate roof structure can be expected to have high sound absorption.

In the double folded roof structure shown in FIGS. 2 and 3, the outer folded roof sheet 1, the inner folded roof sheet 2, and the heat insulating material 3 are not long materials that are continuous in the eaves ridge direction, but are fixed. The configuration is the same as that of FIG. 1 except that the valleys (face plate portions 11, 21) are formed wide, and the same reference numerals are given, and description thereof is omitted. In this roof structure, as shown in FIG. 3, the eaves end (overlapping portion 13) of the ridge-side outer folded roof shingle 1 is superimposed on the ridge end (overlapping portion 14) of the eaves-side outer folded roof shingle 1, The same applies to the inner folded shingle 2 (polymerized section 2
3, the overlapped portion 24), and the overlapped seam piece 32 formed at the eave end of the eaves-side heat insulating material 3 is superimposed on the overlapped seam portion 33 formed at the eaves-side insulation material 3 at the eaves end. Since the thick portion at the eaves end of the overlapped seam piece 32 and the projection at the ridge end of the overlapped seam portion 33 are combined in a hook shape via a space for preventing water infiltration by capillary action, this heat insulation is achieved. Even if dew condensation water or the like flows down from the ridge side to the eaves side on the upper surface of the material 3, the water flows backward at the seam or the heat insulating material 3.
The seam is substantially impervious to water without invasion of moisture on the back surface of the joint.

In the double folded roof structure shown in FIG.
Since the outer folded shingle 1, the inner folded shingle 2, and the heat insulating material 3 are made of a fixed length, laying work by a small number of people becomes possible, and both the workability and the safety of workability are improved. In addition, since the overlapping portion of the outer folded shingle 1 and the joint of the heat insulating material 3 are separated in the eaves ridge direction, the risk of water leakage due to the direct external pressure such as storms acting on the roof surface is ensured. Can be reduced. In this case, since the seam between the overlapped portion of the inner folded shingle 2 and the heat insulating material 3 is also separated in the direction of the eaves ridge, the same effect is achieved. Is not affected.

In the double-folded roof structure shown in FIGS. 4 and 5, the outer-folded roof plate 1, the inner-folded roof plate 2, and the heat insulating material 3 are fixed-length materials and the valley portions are formed as in FIG. Are formed wider, but the cross-sectional shapes of the valleys of the heat insulating material 3 are different. Further, as shown in FIG. 5, a sealing material 6 is interposed in the overlapped portion of the outer folded shingle 1. In this roof structure, as shown in FIG. 5, a plurality of support ridges 34 are provided at the valleys of the heat insulating material 3, the upper ends of which are close to the back surface of the outer folded shingle 1.
The arrangement interval of these support strips 34 becomes the drainage gap 31.

In the double folded roof structure shown in FIG.
Since the supporting ridges 34 receive the positive load acting on the face plate portion 11 of the outer folded shingle 1, the drainage gap 31 is not crushed and the drainage function is not lost. Also fulfills.

The heat insulating material 3 used in the double folded plate roof structure shown in FIG. 6 is formed by laminating a plurality of materials.
The structure includes a compressible material. That is, the heat insulating material 3 in the figure is made of a non-permeable material such as a foamed resin such as styrene, urethane, and phenol, or a non-permeable material such as a known fiber-based heat insulating material whose surface is covered with a film such as polyethylene or PVC. An upper layer material 3A made of a processed material and a lower layer material 3B which is a compressible material,
As B, a fibrous heat insulating material such as glass wool or a foamed resin having a high cushioning property can be used. In addition, the resin-based material portion of the heat insulating material 3 is, from the viewpoint of fire prevention and heat resistance,
It is desirable for the polymer to have self-extinguishing properties or better.

The heat insulating material 3 used for the roof structure of FIG.
As shown in FIG. 7 (b), when they are stacked during transportation or the like, the lower layer material 3B is compressed and deformed, so that the volume of the lower layer material 3B can be made smaller than that of the single material as shown in FIG. 7 (a). Thereby, the transportation cost can be suppressed.

FIG. 8 shows a variation of the waterproofing process at the seam when the heat insulating material 3 is a fixed length material. In the case where the end surfaces of the heat insulating materials 3 and 3 are connected by abutting each other, FIGS. The waterproof tape 6A may be attached to the upper surface as shown in FIG. In addition, in the case where the ends of the heat insulating materials 3 and 3 are partially overlapped and connected, when a pool groove is formed, as shown in FIGS. What is necessary is just to perform a water-impermeable process by interposing 6B.

The double-folded roof structure shown in FIGS. 9 and 10 is the same as the double-folded roof structure shown in FIGS. .
Then, fitting portions 122 and 222 bent outward are formed above the respective side portions 12 and 22 of the outer folded sheet shingle 1 and the inner folded sheet shingle 2, and the fitting portions 122 and 222 are formed above them. This is a configuration in which an adherend that is bent in a letter shape and whose tip is bent downward is formed. Further, as a holder for holding the outer folded plate roof plate 1 and the inner folded plate roof plate 2, a continuous square wave-shaped tight frame 4D mounted on the base 5 and a U-shaped cross section fixed to the tight frame 4D Inner bracket 4
E, a frame 4F that is elastically fitted to and fixed to the receiving fitting 4E, and an outer receiving fitting 4G that is fixed to the frame 4F, and a cover 7 is attached to the uppermost portion by elastic fitting. The inner receiving fitting 4E has a configuration in which fitting portions 41, 41 in which fitting portions 222 of the inner folded plate roof plate 2 are elastically fitted are formed on the left and right sides, and the fitting portion is supported from the back surface. is there. The outer receiving bracket 4G has a configuration similar to that of the inner receiving bracket 4E and holds the outer folded plate roof plate 1 (fitted portion 42). Also, the frame 4F is
The inner receiving member 4E and the outer receiving member 4G are vertically connected, and the leg portion 42 is elastically fitted on the outer surface side of the fitting portion 222, so that the fitting portion 222 is pressed toward the inner receiving member 4E. Therefore, the elastic holding of the inner folded plate roof plate 2 becomes more reliable. The cover 7 also covers the outer folded shingles 1, 1, and the engaging portions 71, 71 formed on the left and right side edges thereof are elastically fitted on the outer surface side of the fitting portion 122, thereby forming the fitting portion 122. Since the outer folded metal roof plate 1 is pressed toward the outer receiving bracket 4G, the elasticity of the outer folded plate roof plate 1 can be more reliably maintained. The cover 7 is generally formed of the same material as the outer folded shingle 1. However, this is not the case when the paint color or the material is used consciously and positively as an accent of the exterior design, as in a theme park or event facility. Also, the cover 7 is factory-produced into a fixed-length material of about 3 to 10 m in the same manner as the outer folded shingle 1, carried into the site, and connected and constructed by well-known connection means such as splicing and sealing. Is also good.

The double-folded-plate roof structure shown in FIGS. 9 and 10 can be constructed only by elastic fitting in order, and can be fitted by being pressed almost from above. The work safety is also high. Also, since the holder is not exposed to the outside, the design is excellent. In addition, since there is no bolted portion or screwed portion, it is not necessary to perform a non-water permeable treatment such as interposing a sealing material, but the rain-removing property is high.

Further, the folding board type is not limited to the above-mentioned one, but is a seam tightening type (seam 15, 25) as shown in FIG. 11 (a) and a seam type as shown in FIG. 11 (b). It may be applied to any type, such as a combined hammer and fitting type, and the holder (4
H, 4I, 4J). In addition, 4H is a tight frame attached on the base 5, 4I is a metal fitting for fixing to the tight frame 4H, and is tightened together with the inner folded plate roof plates 2, 2, and 4J is to the inner heat 25. The support which is fixed and extends upward, supports the outer folded shingle 1 and is fastened is a fastening metal fitting. Also, 4
E 'and 4G' have the same configurations as the receiving fittings 4E and 4G in FIGS. 9 and 10 except that no fitting groove is formed at the upper center. Further, the outer folded shingle 1 and the inner folded shingle 2 are connected to the ridges 16 on the side edges as shown in FIG.
In addition, a configuration in which the intermediate mountain portion 17 is formed may be employed, or a configuration in which a plurality of intermediate mountain portions are formed may be employed.

The shape of the heat insulating material 3 is not particularly limited. For example, the heat insulating material 3 may be formed in any manner as shown in FIGS. Is not particularly limited.

The double folded plate roof structure shown in FIG. 13 is different from the roof structure shown in FIG. 1 in that the heat insulating material 3 which forms the drainage gap 31 only on the valley top surface side is used. The structure is the same except that the heat insulating material 8 that forms the drainage gap is used on both sides on the lower surface side. This heat insulating material 8 has a shape similar to the space between the outer folded shingle 1 and the inner folded shingle 2 except for the valley portion,
By forming the portion corresponding to the valley to be thinner than the space width, a drainage gap 81A is formed on the upper surface side and a drainage gap 81B is formed on the lower surface side.

In the double-folded roof structure shown in FIG. 13, the same effects as described in the description of the roof structure in FIG. 1 can be obtained. In addition, not only the drainage gap 81A on the upper surface side, but also the drainage gap 8 between the heat insulating material 8 and the inner folded plate roof.
Because of the configuration in which 1B is formed, each of the outer folded-plate roof, the heat insulating material, and the inner folded-plate roof has a triple rain-fighting structure having a roof function, and water can quickly flow down to the eaves side, The safety of the rain is extremely high.

The double folded plate roof structure shown in FIGS.
Instead of the fixed-length material type heat insulating material 3 used in the roof structure of FIGS. 2 and 3, a fixed-length material type heat insulating material 8 that forms a drainage gap on both the valley upper surface side and the valley lower surface side was used. Other than the above, the components are the same, and therefore, the same reference numerals are given and the description is omitted. Further, as shown in FIG. 15, a sealing material 6 is interposed in the overlapping portion of the inner folded shingle 2. This insulating material 8
In the valley portion, a plurality of lower supporting ridges 84B whose lower ends are close to the surface of the inside folded shingle 2 are provided, and the interval between the lower supporting ridges 84B is a drainage gap 81B. In the illustrated embodiment, the seam of the heat insulating material 8 is impervious. However, since the inner folded-plate roof has a drainage function as described above, the seam of the heat insulating material 8 is not necessarily impervious. Not necessary. Of course, the seam of the heat insulating material 8 may be impermeable to water to prevent or suppress the flow of water to the inside folded-plate roof.

In the double-folded roof structure shown in FIGS. 14 and 15, similarly to the roof structure of FIG. 2, each overlapping portion of the outer folded-plate roof plate 1 and the inner folded-plate roof plate 2 and the heat insulating material 3 are provided. The seam of the roof is separated in the direction of the eaves ridge, so that the danger of water leakage due to the influence of direct external pressure such as storms acting on the roof surface can be reliably reduced.In such a triple configuration, Virtually unaffected by external pressure.

The double folded plate roof structure shown in FIGS.
Instead of the fixed-length material type heat insulating material 3 used in the roof structure of FIGS. 4 and 5, a fixed-length material type heat insulating material 8 that forms drainage voids on both the valley upper surface side and the valley lower surface side was used. Other than the above, the components are the same, and therefore, the same reference numerals are given and the description is omitted. In addition, as shown in FIG. 17, a seal material 6 is interposed in each overlapping portion of the outer folded shingle 1 and the inner folded shingle 2. The heat insulating material 8 includes a plurality of upper supporting strips 84A whose upper ends are close to the back surface of the outer folded roof panel 1 and a plurality of lower supporting strips 84B whose lower ends are close to the surface of the inner folded roof panel 2 in the valley. In this configuration, the interval between the upper support strips 84A is a drainage gap 81A, and the interval between the lower support strips 84B is a drainage gap 81B. In the illustrated embodiment, a plurality of supporting ridges 84C whose upper ends are close to the back surface of the outer folded shingle 1 are provided in a plurality of portions other than the valleys (inclined portions), so that the capillarity is prevented in the arrangement interval. A void 81C is formed.
The drainage gap 81C also performs the same function as the drainage gap 81A and the like. That is, even if water leakage or internal dew condensation occurs in the inclined portion, the water area is not expanded by the capillary phenomenon, and the drainage gap 81C quickly moves to the eaves side. Can flow down.

As described above, the heat insulating material 8 which forms the drainage gap on both the valley upper surface side and the valley lower surface side has the drainage gap only on the valley upper surface side in each roof structure shown in FIGS. It can be used in place of the heat insulating material 3 to be formed. Similarly, the completely fitted type folded plate type shown in FIGS.
1 (a) and 1 (b) can be applied to any type such as a seam tightening type, a seam / fitting combined type, and the like.

Also, the shape of the heat insulating material 8 is not particularly limited as in the case of the heat insulating material 3.
(A) to (c) may be formed in any manner, and the shapes of the upper supporting strip 84A and the lower supporting strip 84B are not particularly limited.

Although the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the above-described embodiments, but may be modified in any way unless the structure described in the claims is changed. Can be implemented. For example, in the drawings of the embodiments, known waterproof materials such as asphalt roofing and asphalt felt are not shown, but they do not hinder their use. In the case where a fiber-based heat insulating material or the like is laid on the exterior base, it is preferable that the heat insulating material be stretched from the viewpoint of curing.

[0033]

As described above, the double folded roof structure according to the present invention is characterized in that a heat insulating material interposed between the outer folded roof and the inner folded roof is made of a non-permeable material, or at least the upper surface is made of a non-permeable material. Made of treated material, and shaped into a shape approximating the space between the outer folded plate roof and the inner folded plate roof, as well as forming a drainage gap communicating with the eaves ridge direction on the top of the valley, Even if unexpected water leakage or dew condensation occurs on the outer folded-plate roof, the heat insulating material does not absorb water, and the heat insulating performance does not deteriorate. Also, since a drainage void is formed,
Leakage and condensation can quickly flow down to the eaves,
Further water leakage and corrosion of the shingle due to the capillary phenomenon can be prevented. Furthermore, although the heat insulating material is formed in an approximate shape of the space between the inner folded plate roof and the outer folded plate roof, it is not configured to be laid without a gap with the roof plate, so that the molding distortion of the roof plate and the skeleton. Even if there is an error or the like, the work of laying the heat insulating material can be easily performed, and the above-mentioned factors do not lower the design of the outer folded-plate roof.

Further, the outer folded roof plate and the heat insulating material are made of a fixed length, the joint of the heat insulating material is waterproofed, and the overlapped portion of the outer folded roof plate and the joint of the heat insulating material are separated from each other in the eaves ridge direction. In the case of arranging, the laying work of the outside folded roof plate and the heat insulating material can be performed by a small number of people, so that the laying work can be performed by a small number of people, so that the workability and safety of the work can be improved. Further, since the heat insulating material is subjected to a waterproof seam treatment in an internal space which is not directly affected by an external pressure, the heat insulating material maintains drainage and has a high rain-break performance. In addition, in this case, the effect of direct external pressure, such as storms, acting on the roof surface is significantly reduced by separating the overlapped portion of the outer folded shingle and the joint of the heat insulating material in the eaves ridge direction. be able to.

Furthermore, since water does not infiltrate into the back side of the heat insulating material, the inner folded roof does not necessarily have a rain-closing function. Therefore, sound absorbing holes are provided at appropriate intervals in the inner folded roof. It is also possible to adopt a mode in which a large number are provided. In this case, the double folded plate roof structure can be expected to have high sound absorption.

Further, the heat insulating material interposed between the outer folded plate roof and the inner folded plate roof is made of a water-impermeable material or a material whose surface is impermeable to water. The double folded-plate roof structure, which was formed into a shape approximating the space between the valley and the bottom of the valley and the bottom of the valley, was formed with drainage gaps communicating with the eaves ridge, respectively. Since the drainage gap is formed between the inner folded roof and the inner folded roof, each of the outer folded roof, the heat insulating material, and the inner folded roof has a triple rainfall structure that functions as a roof, and quickly drains water. It can flow down to the eaves side, and the safety of rain storms becomes extremely high. In this case as well, if the outer folded shingles and the heat insulating material are standardized, the workability and work safety can be improved, and the overlapping part of the outer folded shingles and the seam of the insulating material are separated in the eaves ridge direction. By doing so, it is possible to reliably reduce the risk of water leakage due to the effects of direct external pressure such as storms acting on the roof surface, and in such a triple configuration, it is practically affected by external pressure. There is no. In addition, the seam of the heat insulating material does not necessarily have to be non-permeable, but may be non-permeable so as to prevent or suppress the flow of water to the inner folded-plate roof.

Furthermore, if the heat insulating material is integrated in advance with either the outer folded shingle or the inner folded shingle, the man-hour for the laying operation is reduced, and the workability is improved.

Further, when a plurality of materials are laminated and the material is configured to include a compressible material, the volume of the heat insulating material during the heat insulating material transport can be suppressed, so that the transportation cost can be suppressed. can do.

Further, when the drainage gap is sized to allow air to flow naturally, by providing an appropriately sized exhaust port on the ridge side, moisture in the roof structure can be quickly removed.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a double-folded-plate roof structure of the present invention.

FIG. 2 is a cross-sectional view showing another embodiment of the double-folded roof structure of the present invention.

FIG. 3 is a sectional view taken along the line AA of FIG. 2;

FIG. 4 is a cross-sectional view showing another embodiment of the double folded plate roof structure of the present invention.

FIG. 5 is a sectional view taken along the line II in FIG. 4;

FIG. 6 is a cross-sectional view showing another embodiment of the double folded plate roof structure of the present invention.

FIG. 7 is a cross-sectional view showing a stacked state at the time of transportation and the like of a heat insulating material used in the double-folded-plate roof structure of FIG. 6;

FIG. 8 is a cross-sectional view illustrating a variation of a waterproof seam treatment of a heat insulating material.

FIG. 9 is a cross-sectional view showing one embodiment of a double-folded-plate roof structure in a completely fitted-type folded-plate roof type.

FIG. 10 is a cross-sectional view showing another embodiment of a double-folded roof structure of a completely fitted type folded-plate roof type.

FIG. 11 is a cross-sectional view showing a variation of a folded roof type or an outer folded roof sheet applicable to the present invention.

FIG. 12 is a cross-sectional view illustrating a variation of a heat insulating material used in the present invention.

FIG. 13 is a sectional view showing another embodiment of the double-folded plate roof structure of the present invention.

FIG. 14 is a sectional view showing another embodiment of the double-folded plate roof structure of the present invention.

FIG. 15 is a cross-sectional view taken along a line wo in FIG. 14;

FIG. 16 is a sectional view showing another embodiment of the double-folded-plate roof structure of the present invention.

FIG. 17 is a sectional view taken along the line AA of FIG. 16;

FIG. 18 is a cross-sectional view illustrating a variation of the heat insulating material used in the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 outer folded plate roof plate 11 face plate portion 12 side portion 2 inner folded plate roof plate 21 face plate portion 22 side portion 3,8 heat insulating material 31,81 drainage gap 5 base

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-289745 (JP, A) JP-A-4-28528 (JP, U) JP-A-4-66226 (JP, U) (58) Investigation Field (Int. Cl. ⁷ , DB name) E04D 3/00-3/40

Claims (9)

(57) [Claims] 1. A double-folded roof structure in which a heat insulating material is interposed between an outer-folded roof and an inner-folded roof, wherein the outer-folded roof is configured such that left and right side edges of a face plate portion are directed outward and upward. It is a structure in which a valley portion and a mountain portion are continuous in the left-right direction in the construction state, and the heat insulating material is a non-permeable material, or at least an upper surface side. Made of non-permeable material, and molded into a shape approximating the space between the outer folded roof and the inner folded roof,
A double folded-plate roof structure characterized by the formation of a drainage gap communicating with the eaves ridge on the upper side of the valley. 2. The outer folded shingle is a fixed length material which is connected by overlapping in the direction of the eaves ridge, and the heat insulating material is a fixed length material which is connected by overlapping or abutting in the direction of the eaves ridge. 2. The double-folded roof structure according to claim 1, wherein the overlapped portion of the outer folded-plate roof plate and the joint of the heat insulating material are disposed so as to be separated from each other in the eaves ridge direction. 3. The double-folded roof structure according to claim 1, wherein the inner folded-plate roof plate is provided with a large number of holes for sound absorption at appropriate intervals. 4. A double-folded roof structure in which a heat insulating material is interposed between an outer-folded roof and an inner-folded roof, wherein the outer-folded roof has outer right and left edges of a face plate portion directed outward and upward. It is a structure in which a valley and a mountain are continuous in the left-right direction in the construction state, and the heat insulating material is a non-permeable material or a non-permeable surface. Made of treated material, formed into a shape similar to the space between the outer folded plate roof and the inner folded plate roof, and formed drainage voids communicating with the eaves ridge direction on the valley upper surface side and valley lower surface side A double folded-plate roof structure characterized by the following. 5. The outer folded shingle and the inner folded shingle,
A fixed length material that overlaps and connects in the direction of the eaves ridge, and a thermal insulation material is a fixed length material that connects in the direction of the eaves and overlaps and abuts each other. 5. The double folded plate roof structure according to claim 4, wherein the seam of the material is arranged in a direction away from the eaves ridge. 6. The double folded plate roof structure according to claim 5, wherein the joint of the heat insulating material is waterproofed. 7. The double fold according to claim 1, wherein the heat insulating material is previously integrated with one of the outer folded shingle and the inner folded shingle. Plank roof structure. 8. The double heat insulating material according to claim 1, wherein the heat insulating material is formed by laminating a plurality of materials, and includes a compressible material. Folded plate roof structure. 9. The double folded plate roof structure according to claim 1, wherein the drainage gap has a size allowing air to flow naturally.