JP3602622B2 - Folded roof structure - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention, the rainwater flow direction joints, and relates to a folding plate roof structure which aimed water top improvements.
[0002]
2. Description of the Related Art
In a folded roof, it is difficult to provide a joint in the direction of rainwater flow in terms of ensuring watertightness. For this reason, in general, one folded sheet is used from the top of the roof to the eaves.
In the case of a large roof, for example, when the folded roof material is longer than 15 m, on-site roll forming is used due to transportation problems.
However, on-site roll forming requires not only space for installing a roll forming machine near the roof of the building, but also transporting the machine to the site and setting it at the height of the roof . In addition, a scaffold for the set and use must be constructed, which requires much time and effort. There is also a problem that the construction period depends on the weather.
For this reason, various configurations for jointing folded roof materials in the direction of rainwater flow have been proposed, but all have problems such as insufficient watertightness, complicated structure, and troublesome construction. .
[0003]
On the other hand, in the folded roof, at the water surface following the outer wall of the upper floor, etc., the water surface door is attached and caulking is performed, or the valley of the folded roof material is bent up with a tool and started up, and the water is returned. Etc. are generally adopted.
However, the water surface door also does not rise at the top of the folded roof material, and the bent portion of the water return also has only a valley at the height of the mountain, and both rise up higher than the mountain. Not.
Therefore, it is difficult to obtain sufficient water stopping performance. In addition, it is necessary to reliably prevent rainwater from flowing back to a water surface door or the like due to wind pressure, and an apron door for a windshield having a complicated shape is required. In the case of bending the above-mentioned water return, stability of quality is also lacking.
[0004]
An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a folded roof structure in which the joint of the folded roof material in the rainwater flow direction can be performed with good watertightness, the structure is simple, and the construction is easy. It shall be the.
[0005]
[Means for Solving the Problems]
The folded roof structure of the present invention has the following configuration. A plurality of folded roof materials are provided side by side in the vertical direction of the roof slope. The lower edge of the upper folded roof material is overlapped with the upper edge of the lower folded roof material via a ventilation gap, and the upper and lower folded roof materials overlap the tight frame on the roof structural material. And the like. On the upper edge of the lower folded roof material, a fixed airtight material for covering the ventilation gap is provided in a fitted state with the upper edge by a groove formed in the fixed airtight material. At the lower end edge of the upper folded roof material, a fixed water blocking material is provided to cover the ventilation gap, and openings for air introduction and drainage are provided at a plurality of longitudinal positions of the fixed water blocking material.
According to this configuration, the fixed water blocking material provided at the lower edge of the upper folded roof material prevents rainwater from entering the ventilation gap between the upper and lower folded roof materials to a certain extent, and the lower folding roof material. The fixed airtight material provided at the upper edge of the plate roofing material prevents further penetration. In this case, since the overlapping portion of the upper and lower folded roof materials is fastened to the support member on the roof structural member, the fixed airtight material is pressed down at the time of fastening, and the close contact with the upper and lower folded roof materials is improved. Can be For this reason, the watertight performance by the fixed airtight material is ensured. In addition, the openings provided at a plurality of locations of the fixed water-stopping material make the air gap and the outside air equal in pressure, so that it becomes a so-called open joint, and the rainwater once entering the air gap is easily discharged. Further, rainwater does not enter the ventilation gap due to a pressure difference due to a temperature change or the like. Therefore, more reliable watertightness is obtained, and the durability is also improved. In addition, the fixed airtight material is fitted into the upper edge of the lower folded roof material at the groove portion and is pressed down as the folded roof material is fastened, so that the mounting is simple and the workability is good.
[0006]
The said structure WHEREIN: You may provide the opening of the said fixed water-stop material in the mountain top, the valley bottom, and the intermediate part of each wave of a folding roof material.
With this configuration, communication with the outside air is uniformly achieved over the entire area of the ventilation gap, so that ventilation and discharge of infiltrating rainwater are performed more smoothly, and durability is further improved.
[0007]
Further, in the above configuration, a water return piece that rises higher than the top of the wave mountain of the folded roof material may be provided over the entire width of the upper edge of the folded roof material.
By providing the water return pieces high in this way, it is possible to reliably prevent rainwater from entering the building above the water.
The water return piece may be formed integrally with the folded roof material. Thereby, the folded roof material with the water return piece can be easily processed.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
One embodiment of the present invention will be described with reference to FIGS. FIGS. 1A and 1B are a longitudinal sectional view and a transverse sectional view showing the folded roof structure, and FIG. 1A shows a joint portion and a water surface in a rainwater flow direction. The folded roof materials 1A and 1B are formed by forming a colored zinc iron plate or the like into a trapezoidal waveform by roll forming or the like, and a plurality of the folded roof materials are arranged in the vertical direction of the roof gradient which is the rainwater flow direction. As shown in FIG. 2A, a plurality of these folded roof materials 1A and 1B are arranged in the width direction, and adjacent folded roof materials 1A, 1A, 1B and 1B are arranged as shown in FIG. 2B. Are superimposed on the side edges. The side edges of each of the folded roof materials 1A and 1B are corrugated peaks.
[0010]
As shown in FIG. 1A, the lower end of the upper folded roof material 1A in the joint portion is overlapped with the upper end of the lower folded roof material 1B via the ventilation gap 2. The overlapping portion of the upper and lower folded roof materials 1A and 1B is installed on a roof beam 4 made of steel as a structural member of the roof via a tight frame 3 as a support member. The tight frame 3 is made of a metal strip bent in a corrugated shape along the back surface of the folded roof material 1, and its valley 3 b is joined to the upper surface of the roof beam 4 by welding 18.
Bolts 6 are passed through the upper and lower folded roof materials 1A and 1B from the back side of the ridges 3a of the tight frame 3 and tightened with the nuts 9 together with the packing 7 and the washers 8 arranged on the front side. The overlapping portions of the folded roof materials 1A and 1B are fastened to the tight frame 3. Each of the folded roof materials 1A and 1B is provided with bolts, nuts and packing on the tight frame 3 on the other roof beam 4 at a plurality of positions (not shown) in the direction of the slope of the roof in addition to the overlapping portions, as described above. And so on.
[0011]
At the upper edge of the lower folded roof material 1B, a fixed airtight material 10 for covering the upper end of the ventilation gap 2 is provided. The fixed airtight material 10 is made of an elastic band material such as rubber or synthetic resin having a groove 10a formed on the side surface, and the groove 10a is fitted to the upper edge of the lower folded roof material 1B to be folded. It is attached along the corrugated section of the plate roofing material 1B. The fixed airtight material 10 may be formed in advance into the sectional shape of the folded roof material 1B, or may be a straight material that can be flexibly bent.
On the lower edge of the upper folded roof material 1A, a fixed waterproof material 11 covering the lower end of the ventilation gap 2 is provided along the corrugated cross section. The fixed water-stopping material 11 is made of an elastic strip such as rubber or synthetic resin, and has openings 12 for air introduction and drainage at a plurality of locations in the longitudinal direction. The opening 12 is provided in a portion corresponding to the peak 1a and the valley 1b of each wave of the folded roof material 1 and the intermediate portion 1c between the peak 1a and the valley 1b. The fixed water-stopping material 11 may be formed in advance into the cross-sectional shape of the folded roof material 1A, or may be a straight material that can be flexibly bent.
[0012]
The fixed airtight material 10 and the fixed waterproof material 11 are fixed to the tight frame 3 with bolts 6 and nuts 9 at the overlapping portions of the upper and lower folded roof materials 1A and 1B, so that these folded roof materials 1A are formed. , 1B. That is, the fixed airtight material 10 adheres to the back surface of the upper folded roof material 1A, and the fixed waterproof material 11 adheres to the surface of the lower folded roof material 1B. The ventilation gap 2 is obtained between the folded roof materials 1A and 1B by the interposition of both the fixed airtight material 10 and the fixed waterstop 11 or one of them.
[0013]
Of the folded roof material, a water return piece 13 that rises higher than the top of the corrugated peak 1a of the folded roof material 1A is provided at the upper end edge of the folded roof material 1A at the uppermost position over the entire width. I have. The upper portion of the water return piece 13 is inserted into the back of the outer wall 14 on the upper floor of the building. The insertion portion of the water return piece 13 may be fixed to the frame 15 of the outer wall 14 with a fastener 16 or the like. The water return piece 13 is fixed to the folded roof material 1A by welding at a factory or the like, but may be integrally formed with the folded roof material 1A as in the example of FIG. 3 or FIG. In the example of FIG. 3, the water return piece 13 is a curved plate having an arc-shaped cross section. In the example of FIG. 4, the water return piece 13 is composed of a sloped surface portion 1d having an ascending gradient from the valley portion of the folded roof material 1A to the height of the hill, and a vertical surface portion 13b rising vertically from the sloped surface portion. In addition, in each example of FIG. 2 to FIG. 4, a side water return piece 19 that rises at the same height as the water return piece 13 is provided on the side edge on the wife side of the folded roof material 1A located on the roof surface of the roof. Are integrally provided by molding or the like.
[0014]
As shown in FIGS. 1 (A) and 2 (B), an apron face door 17 for windshield covering the valleys is provided along the width direction above the folded roof material 1A. The lower end of the apron face door 17 is formed in a waveform along the waveform of the folded roof material 1A. The apron face door 17 has a length extending over a plurality of folded roof materials 1A arranged side by side, and a bent piece 17a provided at a side end is joined to a side water return piece 19 of the folded roof material 1A. It is installed by doing. The upper part between the apron face door 17 and the water return piece 13 is covered with a drain board 20. The water drain board 20 has its rising part overlapped with the water return piece 13 and the outer wall surface material and the frame 15 It is sandwiched between and fixed.
[0015]
According to the folded roof structure of this configuration, a plurality of folded roof materials 1A and 1B are laid side by side in the direction of the roof gradient and jointed, so that each folded roof material 1A and 1B can be short and factory-produced. Can be used. Therefore, even in the case of a large-scale roof, on-site roll forming is not required, and it is not necessary to put or set a roll forming machine on site. In addition, construction can be performed without being affected by the weather. Since each of the folded roof materials 1A and 1B is short, the amount of thermal elongation is dispersed and reduced for each of the folded roof materials 1A and 1B, and the noise of the roof due to the thermal elongation can be avoided.
[0016]
The joint portion of the upper and lower folded roof materials 1A and 1B is provided as an open joint by providing a ventilation gap 2 in the overlapping portion thereof, and providing an opening 12 for air introduction and drainage in a fixed waterproof material 11 at the lower end of the gap. Therefore, the ventilation gap 2 and the outside air have the same pressure, and the rainwater that has entered the ventilation gap 2 is easily discharged. In addition, rainwater does not enter the ventilation gap 2 due to the pressure difference. For this reason, the durability of the joint portions of the upper and lower folded roof materials 1A and 1B is improved, and highly reliable water stopping can be achieved. The fixed airtight material 10 is pressed down by fastening the overlapping portions of the upper and lower folded roof materials 1A and 1B to the tight frame 3 with bolts 6, and adheres tightly to the upper folded roof material 1A, so that high watertightness is secured. You. In addition, since the fixed airtight material 10 and the fixed waterstop 11 are sandwiched between the folded roof materials 1A and 1B by the above-mentioned fastening, the attachment becomes reliable and the attachment work is easy.
[0017]
In the upper part of the folded roof, since the folded roof material 1A is provided with the water return pieces 13 rising higher than the mountain top, the water stopping performance is improved, and the leakage of rainwater into the outer wall 14 of the building is prevented. . As described above, since the water return by the water return piece 13 is good, the apron face door 17 does not need to have a three-dimensional shape, and can be water-stopped even with a flat plate-shaped color steel plate or the like as shown in the figure. Since the apron face door 17 may have a planar shape, the workability is excellent. Although the water return piece 13 rises high, as described above, the folded roof materials 1A and 1B can be securely joined in the flow direction of rainwater, and the folded roof material 1A can be shortened. can do. Since the water return pieces 13 can be manufactured in the factory in advance in this way, the quality is stabilized and the construction period is shortened.
[0018]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to the folded roof structure of this invention, joint of the folded roof material in the rainwater flow direction can be performed with good watertightness, the structure is simple, and the construction can be easily performed. In particular, the combination of the ventilation gap, the fixed airtight material, and the fixed water-stopping material results in an open joint, resulting in a highly durable and reliable water-stop. In addition, since the fixed airtight material is held down by the fastening portion of the folded roof material, the effect of improving watertightness and workability is great. Since the joint in the rainwater flow direction can be reliably performed in this way, even a large roof can be constructed without performing roll forming on site.
In addition, if a water return piece that rises higher than the top of Namiyama is provided on the upper edge of the upper folded roof material over the entire width, the water stopping performance on the water side will be improved, and the The apron side door also requires a simple configuration.
[Brief description of the drawings]
FIG. 1A is a partial longitudinal sectional view of a folded roof structure according to an embodiment of the present invention, and FIG. 1B is a transverse sectional view of the folded roof structure.
2A is an exploded perspective view of an upper folded roof material used in the folded roof structure, and FIG. 2B is an upper folded roof material, a lower folded roof material, and an apron face door. It is an exploded perspective view of.
FIG. 3 is an exploded perspective view showing another example of a folded roof material with a water return piece.
FIG. 4 is an exploded perspective view showing still another example of a folded half roof material with a water return.
[Explanation of symbols]
1A, 1B: folded roof material, 2: ventilation gap, 3: tight frame (supporting member), 3a: mountain, 3b: valley, 3c: middle, 4: roof beam (roof structural material), Reference Signs List 10: regular airtight material, 10a: groove, 11: fixed water-stop material, 12: opening, 13: water return piece

Claims (4)

A plurality of folded roof materials are arranged side by side in the vertical direction of the roof slope, and the lower end of the upper folded roof material is overlapped with the lower end of the upper folded roof material through the ventilation gap. The fixed portion of the folded roof material is fastened to the support member on the roof structural material, and the upper end edge of the lower folded roof material covers the ventilation gap. A fixed water-stopping material is provided at the lower end edge of the upper folded sheet material so as to cover the ventilation gap, and is provided at a plurality of locations in the longitudinal direction of the fixed water-stopping material. Folded roof structure with openings for air introduction and drainage. The folded roof structure according to claim 1, wherein the openings of the fixed waterproof material are provided at the top, the bottom, and the middle of each wave of the folded roof material. The folded roof structure according to claim 1, wherein a water return piece that rises higher than the top of the wave mountain of the folded roof material is provided over the entire width of the upper edge of the upper folded roof material. The folded roof structure according to claim 3, wherein the water return piece is formed integrally with the folded roof material.

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