JP6974013B2 - Folded plate roof structure - Google Patents

Description

The present invention relates to a folded plate roof structure.

Patent Document 1 discloses a conventional folded plate roof structure to which a so-called vertical joint method is applied. In the folded plate roof structure described in Patent Document 1, a first vertical roofing material arranged on the eaves side and a second vertical roofing material arranged on the ridge side are vertically joined in the direction of the eaves. The ridge-side end of the second vertical-roofed lumber is overlapped with the eave-side end of the second vertical-roofed lumber from above.

The first vertical lumber and the second vertical lumber are fastened to each other in an overlapping state, and are integrally connected in a mutually restrained state.

As described above, according to the conventional folded-plate roof structure, when the vertical joint method is applied, a highly portable vertical roofing material is used, so that the transportability from the manufacturing factory to the construction site is good and the construction is carried out. Workability at the site is also good.

Japanese Unexamined Patent Publication No. 2013-213395

By the way, this kind of vertical roofing material is heated by irradiation with sunlight during the day, while it is cooled by a decrease in temperature at night, so that heating and cooling are repeated. For this reason, when the length of the roof surface in the eaves direction is longer than a certain length, excessive thermal expansion and contraction occurs repeatedly in the vertical roofing material, and an excessive load is placed on the support and the like that support the vertical roofing material. Occurs.

In this regard, although the folded-plate roof structure to which the conventional vertical joint method is applied uses multiple vertical roofing materials, the vertical roofing materials on the eaves side and the vertical roofing materials on the ridge side are mutually restrained. It is connected integrally in the state. For this reason, even in the folded plate roof structure to which the conventional vertical joint method is applied, the thermal expansion and contraction of each vertical roofing material is accumulated over the entire length of the roof surface in the eaves direction, and excessive thermal expansion and contraction occurs repeatedly. There was a problem.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a folded plate roof structure capable of suppressing the amount of thermal expansion and contraction of a folded plate material even if the length of the roof surface in the eaves direction is long. To provide.

The folded plate roof structure according to one aspect of the present invention is overlapped with an eaves-side folded plate material supported by a first support fixed to a base and an end portion of the eaves-side folded plate material on the ridge side from above. A ridge-side folded plate material supported by a second support fixed to the base is provided, and the eave-side folded plate material and the ridge-side folded plate material are not constrained to each other.

Further, in this folded plate roof structure, the first support tool is provided with an eaves side folded plate material support surface for supporting the eaves side folded plate material, and the second support tool is provided with the ridge side folding. A ridge-side folded plate material support surface for supporting the plate material is provided, and the height of the second support tool from the base to the ridge-side folded plate material support surface is from the base to the eave-side folded plate material support surface. It is preferably configured to be higher than the height.

Further, in this folded plate roof structure, the second support is configured by attaching a spacer member to the eaves side folded plate material support surface of the first support, and the upper surface of the spacer member. Is preferably the ridge-side folded plate material support surface.

Further, in this folded plate roof structure, it is preferable that a water blocking material is arranged between the ridge-side end of the eave-side folded plate material and the eave-side end of the ridge-side folded plate material.

Further, in this folded plate roof structure, the eaves side folded plate material is raised from a bottom surface portion whose longitudinal direction is parallel to the eaves building direction and whose width direction is parallel to the building direction, and both ends of the bottom surface portion in the width direction. The water blocking material is provided over the bottom surface portion and the pair of rising surfaces, and the water blocking material communicates with the portion corresponding to the bottom surface portion in the eaves direction. It is preferable that a water passage portion is provided.

Further, in this folded plate roof structure, it is preferable that the eaves side folded plate material and the ridge side folded plate material are made of a goby type folded plate material.

According to the folded plate roof structure of the present invention, even if the length of the roof surface in the eaves direction is long, the amount of thermal expansion and contraction of the folded plate material can be suppressed.

FIG. 1 is a perspective view of a roof structure according to an embodiment of the present invention. FIG. 2 is a perspective view of the same lower roof. FIG. 3 is a perspective view of the upper roof of the same. FIG. 4A is a front view of the same first support. FIG. 4B is a side view of the same first support. FIG. 5 is a cross-sectional view of a main part of the same roof structure. FIG. 6 is a cross-sectional view orthogonal to the same building direction. FIG. 7 is a plan view of the same eaves side folded plate material. FIG. 8A is a front view of the same second support. FIG. 8B is a side view of the same second support. FIG. 9A is a front view of the spacer member of the same as above. FIG. 9B is a side view of the spacer member of the same as above. FIG. 9C is a plan view of the spacer member of the same as above. FIG. 10 is a cross-sectional view of a main part of the same roof structure. FIG. 11 is a perspective view of the end portion of the ridge-side folded plate material on the eave side of the same. FIG. 12 is an exploded perspective view of a modified example of the above embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 1, the folded-plate roof structure of the present embodiment is a double-folded-plate roof structure to which a repair method for roofing a newly installed folded-plate roof is applied to the existing folded-plate roof as a base. The folded plate roof structure includes a lower roof 1 as an existing folded plate roof and an upper roof 2 as a new folded plate roof.

In the following, the roof slope direction is defined as the eaves building direction, and the direction orthogonal to the eaves building direction and along the horizontal plane is defined as the ridge direction.

As shown in FIG. 2, the lower roof 1 is a roof configured by attaching a lower folding plate member 13 to a tight frame 11. The lower roof 1 includes a tight frame 11 and a plurality of lower folded plate members 13.

The tight frame 11 is a frame for fixing the lower folding plate material 13 constituting the roof surface of the lower roof 1 via a hanger 12 or the like, and is fixed to the upper surface of a horizontal member 17 such as a purlin by welding, for example. .. A plurality of horizontal lumbers 17 are installed so as to be gradually increased from the eaves to the ridge, and accordingly, the plurality of tight frames 11 are also gradually increased from the eaves to the ridge.

A plurality of lower folding plate members 13 are bridged and installed on the plurality of tight frames 11. The lower folding plate material 13 of the present embodiment is composed of a goby type folding plate material. Each lower folded plate material 13 extends in the direction of the eaves building and has a width in the direction of the building. Each lower folded plate material 13 includes a bottom surface portion 131 and a pair of rising portions 132 raised from both ends in the width direction of the bottom surface portion 131, and the bottom surface portion 131 and the pair of rising top portions 132 are roll-molded. Is integrally molded by.

Another lower folding plate material 13 is arranged adjacent to the lower folding plate material 13 in the ridge direction. The adjacent lower folding plate members 13 are configured so that the tips of the rising portions 132 overlap each other, and are connected to each other by being fastened to each other with the hanger 12 of the tight frame 11 sandwiched between them. The portion formed by fastening the goby is referred to as the goby fastening portion 16). A mountain portion 14 is formed by connecting a pair of adjacent rising portions 132 to each other, and a valley portion 15 is formed by the bottom surface portion 131. Therefore, in the lower roof 1, the mountain portion 14 and the valley portion 15 are repeatedly formed in the ridge direction.

The upper roof 2 is installed above the lower roof 1 having such a configuration. As shown in FIG. 3, the upper roof 2 includes an eave-side folding plate material 4, a plurality of first supports 3 for supporting the eave-side folding plate material 4, a ridge-side folding plate material 5, and a ridge-side folding plate material 5. It is provided with a plurality of second supports 6 for supporting. In the upper roof 2, the eaves-side end of the ridge-side folding board 5 is overlapped with the ridge-side end of the eaves-side folding board 4 from above, but the eaves-side folding board 4 and the ridge-side folding board 5 Are non-binding to each other.

Here, "the eaves side folding board 4 and the ridge side folding board 5 are not restrained from each other" means that the eaves side folding board 4 and the ridge side folding board 5 are not fastened to each other. It means that one of the plate material 4 and the ridge side folded plate material 5 is in a state where it can be thermally expanded and contracted without being affected by the other folded plate material. As will be described later, even if the water blocking material 7 is interposed between the eaves side folding plate material 4 and the ridge side folding plate material 5 and the binding force of the water blocking material 7 acts on each other, the water blocking material 7 is restrained. Since the force can be almost ignored, in this case, the eaves-side folding plate material 4 and the ridge-side folding plate material 5 are not restrained from each other.

The first support 3 is attached to the upper end portion of the mountain portion 14 of the lower roof 1. The first support 3 is attached to one mountain portion 14 of the lower roof 1 at a plurality of locations in the eaves direction. Further, the first support 3 of the present embodiment is attached to all the mountain portions 14. The eaves side folding plate material 4 is supported by the plurality of first supports 3. As shown in FIG. 4, the first support 3 includes a support main body 31 and a hanger 35. The hanger 35 is detachably attached to the support main body 31 via bolts and nuts.

The support main body 31 is a portion constituting the main body of the first support 3. The support main body 31 includes a first fixing member 32 and a second fixing member 33, and the first fixing member 32 and the second fixing member 33 are adjacent to each other in the ridge direction. It is configured by bolting.

The first fixing member 32 is above the first mounting portion 321 mounted on the upper end surface of the mountain portion 14 of the lower roof 1 and the end portion of the first mounting portion 321 on the second fixing member 33 side. The first groove-shaped portion 322 extending upward, the first vertical plate portion 323 extending upward from the upper end portion of the first groove-shaped portion 322, and the second fixing member from the upper end portion of the first vertical plate portion 323. It is provided with a first top plate portion 324 extending to the opposite side of 33. The first groove-shaped portion 322 is formed in a groove shape that opens on the side of the second fixing member 33. Further, the hanger 35 is bolted to the first top plate portion 324.

The second fixing member 33 is above the second mounting portion 331 mounted on the upper end surface of the mountain portion 14 of the lower roof 1 and the end portion of the second mounting portion 331 on the first fixing member 32 side. The second groove-shaped portion 332 extending upward, the second vertical plate portion 333 extending upward from the upper end portion of the second groove-shaped portion 332, and the first fixing member from the upper end portion of the second vertical plate portion 333. It is provided with a second top plate portion 334 extending to the opposite side of 32.

The second groove-shaped portion 332 is formed in a groove shape opened on the side of the first fixing member 32, and is arranged to face the first groove-shaped portion 322. As a result, as shown in FIG. 5, the goby fastening portion 16 of the lower roof 1 is sandwiched between the second groove-shaped portion 332 and the first groove-shaped portion 322 in a state where the goby fastening portion 16 is housed inside. Can be done.

The first support 3 may be fixed to the lower roof 1 by sandwiching the goby fastening portion 16 between the second groove-shaped portion 332 and the first groove-shaped portion 322, or the lower roof 1 may be fixed. The first mounting portion 321 and the second mounting portion 331 (collectively referred to as a mounting portion) may be fixed to the tight frame 11 via a fixing tool such as a screw.

The second vertical plate portion 333 is a portion to be bolted while being overlapped with the first vertical plate portion 323, and is formed longer in the vertical direction than the first vertical plate portion 323 as shown in FIG. 4A. There is. The eaves side folded plate material 4 is configured to be placed on the second top plate portion 334 extending from the upper end portion of the second vertical plate portion 333, and the second top plate portion 334 is the eaves side folded plate material. Support 4 That is, in the present embodiment, the upper surface of the second top plate portion 334 constitutes the eaves side folded plate material support surface.

Here, FIG. 6 shows a cross section of the roof structure of the present embodiment as viewed from the side. As shown in FIG. 6, the eaves-side folding plate material 4 is attached to the first support tool 3. The eaves-side folding plate material 4 is a folding plate material located on the eaves side of the ridge-side folding plate material 5. The eaves side folded plate material 4 is arranged above the lower roof 1 with a certain gap. The length of the eaves side folded plate material 4 in the eaves direction is preferably 60 m or less. Since the length of the eaves-side folded plate material 4 in the eaves direction is 60 m or less, even if the eaves-side folded plate material 4 undergoes thermal expansion and contraction, the amount of thermal expansion and contraction can be kept within an appropriate range. The eaves-side folded plate material 4 of the present embodiment is composed of a plurality of upper folded plate materials 41.

As shown in FIG. 3, each upper folded plate material 41 extends in the direction of the eaves building and has a width in the direction of the building. The upper folded plate material 41 is a goby type folded plate material made of a steel plate. Each upper folded plate material 41 includes a bottom surface portion 411 and a pair of rising top portions 412 raised from both ends in the width direction of the bottom surface portion 411, and the bottom surface portion 411 and the pair of rising top portions 412 are roll-molded. Is integrally molded by.

The plurality of upper folded plate members 41 are arranged adjacent to each other in the ridge direction. The upper folded plate members 41 adjacent to each other in the ridge direction are configured so that the ends of the rising portions 412 overlap each other, and are fastened to each other with the hanger 35 of the first support 3 sandwiched between them. ..

In the eaves side folded plate material 4, the mountain portion 14 is formed by connecting the pair of adjacent rising plates 412 to each other in the plurality of upper folded plate materials 41, and the valley portion 15 is formed by the bottom surface portion 411. Similar to the roof 1, the mountain portion 14 and the valley portion 15 are repeatedly formed in the direction of the ridge.

Here, the eaves-side folded plate material 4 of the present embodiment is configured by connecting the upper folded plate material 41 formed to have a length over the entire length of the eaves-side folded plate material 4 in the eaves direction in the ridge direction. For example, the configuration as shown in FIG. 7 may be used. As shown in FIG. 7, the eaves-side folded plate material 4 is staggered so that the connecting portions A of the upper folded plate materials 41 adjacent to each other in the eaves building direction are not adjacent to each other in the building direction. The upper folded plate members 41 adjacent to each other in the direction of the eaves are mutually restrained by fastening a goby.

In this way, by making the connecting portion in the eaves building direction not adjacent to the building direction, the number of overlapping upper folded plate members 41 in the connecting portion A can be reduced as much as possible, and the water stopping property can be improved. can.

As shown in FIG. 6, the ridge-side folded plate material 5 is a folded plate material located on the ridge side of the eave-side folded plate material 4. Like the eaves-side folding plate material 4, the ridge-side folding plate material 5 is composed of a plurality of upper folding plate materials 41. The ridge-side folded plate material 5 is arranged above the lower roof 1 with a certain gap. Since the configuration of the ridge-side folding plate material 5 is the same as the configuration of the eave-side folding plate material 4, overlapping explanations will be omitted.

The second support 6 is a member for supporting the ridge-side folding plate material 5. The second support 6 is attached to the upper end of the mountain portion 14 of the lower roof 1 like the first support 3. The second support 6 is attached to one mountain portion 14 of the lower roof 1 at a plurality of locations in the direction of the eaves building on the ridge side of the eaves side folded plate material 4. Further, the second support 6 of the present embodiment is attached to all the mountain portions 14. The ridge side folding plate material 5 is supported by the plurality of second supports 6.

Here, the dimension between the second support 6 arranged most on the eaves side and the end portion of the eaves side folding plate material 4 on the ridge side is a dimension considering the amount of thermal expansion and contraction of the eaves side folding plate material 4. It is preferable to do so.

As shown in FIG. 8, the second support 6 includes a support main body 31, a hanger 35, and a spacer member 60. The hanger 35 is detachably attached to the support main body 31 via bolts.

The support main body 31 is a portion constituting the main body of the second support 6. Since the support main body 31 has the same structure as the support main body 31 of the first support 3, overlapping description will be omitted.

The spacer member 60 is attached to the second top plate portion 334 and the first top plate portion 324 of the support main body 31. As shown in FIGS. 9A to 9C, the spacer member 60 has a first raised portion 61 mounted on the first top plate portion 324 and a second raised portion 62 mounted on the second top plate portion 334. And have.

As shown in FIG. 9B, the first raised portion 61 is formed in the shape of a hat in cross section. The first raised portion 61 is arranged between the first top plate portion 324 and the hanger 35. The first raised portion 61 includes a bottom plate portion 611 that abuts on the first top plate portion 324, a pair of standing piece portions 612 raised from both ends of the bottom plate portion 611, and an upper end portion of the pair of standing piece portions 612. It is provided with a hanger support piece portion 613 extending in a direction away from each other.

As shown in FIG. 8B, the hanger 35 is fixed to the first top plate portion 324 with a fixing tool in a state where the hanger 35 is placed on the hanger support piece portion 613. .. As the fixing tool, for example, a bolt (cutting bolt) is used. In the hanger 35, with the hanger 35 mounted on the hanger support piece 613, a shredded bolt is inserted into the through hole between the bottom plate portion 611 and the hanger 35, and both ends of the shredded bolt in the longitudinal direction are inserted. It is fixed by screwing the nut against.

The second raised portion 62 is arranged on the second top plate portion 334. As shown in FIGS. 9A and 9C, the second raised portion includes a top surface portion 621 and a pair of side surface portions 622. As shown in FIG. 10, the upper surface of the top surface portion 621 is formed so as to be substantially parallel to the upper surface of the second top plate portion 334, and the upper surface of the top surface portion 621 is a ridge side that supports the ridge side folded plate material 5. It constitutes the folding plate material support surface.

The pair of side surface portions 622 are located below the top surface portion 621 via a gap and support the top surface portion 621. The lower side of each side surface portion 622 has an inclined portion 623 inclined so that the base end portion on the first raised portion 61 side is located lower toward the first raised portion 61 side. The top surface portion 621 is reinforced by a pair of side surface portions 622 against a load (positive pressure) from the ridge side folding plate material 5.

Regarding this point, if the pair of side surface portions 622 is not provided, the ridge side folding plate material 5 is supported only by the top surface portion 621. In this case, when a load is applied such as snow on the ridge-side folding plate material 5, the strength becomes unstable. However, according to the spacer member 60 of the present embodiment, even if the load is applied, the load is applied. , Can be supported by the second top plate portion 334 via a pair of side surface portions 622.

Although a gap is interposed between the second raised portion 62 of the present embodiment and the tip portion of the second top plate portion 334, the inclined portion 623 of the second raised portion 62 is the second It is placed on the base end portion 335 of the two top plate portions 334. Therefore, the load applied to the second raised portion 62 can be supported by the second top plate portion 334 via the pair of side surface portions 622.

The ridge-side folded plate material support surface of the second support tool 6 has substantially the same height as the height dimension of the second raised portion 62 of the spacer member 60 with respect to the eave-side folded plate material support surface of the first support tool 3. It is formed in a high position. That is, the height from the upper end surface of the mountain portion 14 of the lower roof 1 to the ridge side folded plate material support surface is higher than the height from the upper end surface of the mountain portion 14 of the lower roof 1 to the eaves side folded plate material support surface. It is configured in.

As shown in FIG. 9A, the second raised portion 62 is connected to the first raised portion 61 via the connecting portion 63. Therefore, when the first raised portion 61 is fixed to the support main body 31, the second raised portion 62 is also fixed to the support main body 31.

As described above, in the spacer member 60 of the present embodiment, not only the load applied to the second raised portion 62 can be supported by the second top plate portion 334 via the pair of side surface portions 622, but also the first It is connected to the top plate portion 324 via a fixing tool. Therefore, when a load is received by the second raising portion 62, the load can be received in a well-balanced manner at the central portion of the support main body 31 in the ridge direction, without tilting the hanger 6 and the support main body 31. It can be installed stably.

When the ridge-side folding board 5 is attached to the second support 6 having such a configuration, as shown in FIG. 6, the eaves-side end of the ridge-side folding board 5 is the eaves-side folding board 4. It is located above the end of the ridge side with a certain dimension overlap. At this time, the ridge-side folding plate material 5 and the eave-side folding plate material 4 are not fixed to each other by fastening the goby, and are not restrained from each other. However, the water blocking material 7 is arranged between the eave-side end of the ridge-side folded plate material 5 and the ridge-side end of the eave-side folded plate material 4.

The water blocking material 7 prevents rainwater from entering the lower roof 1 side as a base from between the eaves-side end of the ridge-side folded plate material 5 and the ridge-side end of the eaves-side folded plate material 4. The waterproof material 7 includes a plurality of waterproof packings 71 and 72 arranged at intervals in the direction of the eaves. As shown in FIG. 11, the waterproof material 7 of the present embodiment is composed of two rows of waterproof packings 71 and 72 separated from each other in the direction of the eaves (the waterproof packing on the eave side is the first waterproof packing). 71 and the waterproof packing on the ridge side are referred to as the second waterproof packing 72). Each water stop packing 71, 72 includes a bottom water stop portion 721 and a pair of rising water stop portions 723, and is formed over the entire length of the bottom surface portion 411 and the pair of rising water stops 412.

The bottom water blocking portion 721 is a water blocking material provided in a portion corresponding to the bottom surface portion 411. The bottom water stop portion 721 is formed thicker in the thickness direction (direction orthogonal to the roof surface) than each rise water stop portion 723 (specifically, it is formed to be about twice as thick). .. The bottom water stop portion 721 of the present embodiment is configured by stacking two layers of standard packing.

When two layers of packing are used as the bottom water stop portion 721, it is preferable to use a packing wider than the upper layer for the lower layer. As a result, it is possible to prevent the bottom water stop portion 721 from falling over during construction, and it is possible to prevent the water stoppage from being impaired.

Further, the bottom water stop portion 721 of the first water stop packing 71 is provided with a water passage portion penetrating in the direction of the eaves building. The water passage portion is composed of a notch portion 722 cut out from below the bottom water stop portion 721. The cutout portions 722 are provided at a plurality of locations in the width direction of the bottom surface portion 411. As a result, rainwater that cannot be stopped by the first water-stopping packing 71 and that is stopped by the second water-stopping packing 72 can be drained onto the eaves-side folding plate material 4.

As shown in FIG. 3, the folded plate roof structure having such a configuration has an eaves side at the eaves side end portion of the ridge side folded plate material 5 at the connection portion between the eave side folded plate material 4 and the ridge side folded plate material 5. A waterproof frame 8 that covers the gap between the folded plate material 4 and the ridge side folded plate material 5 is attached. The water stop frame 8 is formed along the shape of the end portion of the ridge-side folded plate material 5 on the eave side. The waterproof frame 8 is fixed to the ridge-side folding plate material 5, but is not fixed to the eave-side folding plate material 4.

〔effect〕
As described above, in the folded plate roof structure of the present embodiment, the eaves side folded plate material 4 supported by the first support 3 fixed to the base and the end portion of the eaves side folded plate material 4 on the ridge side. It is provided with a ridge-side folded plate material 5 which is stacked from above and supported by a second support 6 fixed to a base. The eaves side folding plate material 4 and the ridge side folding plate material 5 are not restrained from each other.

According to this configuration, even if the eaves-side folding plate material 4 and the ridge-side folding plate material 5 are thermally expanded and contracted, the eave-side folding plate material 4 and the ridge-side folding plate material 5 are not restrained from each other. The thermal expansion and contraction that occurs in 4 and the thermal expansion and contraction that occurs in the ridge-side folding plate material 5 can be made independent. As a result, even if the length of the roof surface in the eaves direction is long, the amount of thermal expansion and contraction generated in the folded plate roof can be kept within an appropriate range.

Further, it is preferable that the folded plate roof structure of the present embodiment has the following additional configurations. That is, in the folded plate roof structure of the present embodiment, the first support tool 3 is provided with an eaves side folded plate material supporting surface that supports the eaves side folded plate material 4. The second support tool 6 is provided with a ridge-side folding plate material support surface that supports the ridge-side folding plate material 5. The second support tool 6 is configured so that the height from the base to the ridge-side folded plate material support surface is higher than the height from the base to the eave-side folded plate material support surface.

According to this configuration, by using the first support tool 3 and the second support tool 6, the eaves side folding plate material 4 and the ridge side folding plate material 5 can be arranged separately from each other, and the eaves can be easily arranged. It is possible to form a state in which the side folding plate material 4 and the ridge side folding plate material 5 are not restrained from each other.

Further, it is preferable that the folded plate roof structure of the present embodiment has the following additional configurations. That is, in the folded plate roof structure of the present embodiment, the second support 6 is configured by attaching the spacer member 60 to the eaves side folded plate material support surface of the first support 3. The upper surface of the spacer member 60 is a ridge-side folded plate material support surface.

According to this configuration, since the second support 6 can be formed by using the first support 3, a common member can be used and inventory management becomes easy.

Further, it is preferable that the folded plate roof structure of the present embodiment has the following additional configurations. That is, in the folded plate roof structure of the present embodiment, the waterproof material 7 is arranged between the ridge-side end of the eave-side folded plate material 4 and the eave-side end of the ridge-side folded plate material 5.

According to this configuration, it is possible to suppress inundation from between the ridge-side end of the eave-side folding board 4 and the ridge-side end of the ridge-side folding board 5.

Further, it is preferable that the folded plate roof structure of the present embodiment has the following additional configurations. That is, in the folded plate roof structure of the present embodiment, the eaves side folded plate material 4 has a bottom surface portion 411 whose longitudinal direction is parallel to the eaves building direction and whose width direction is parallel to the ridge direction, and both ends in the width direction of the bottom surface portion 411. It is provided with a pair of rising portions 412 raised from the portion. The water blocking material 7 is provided over the bottom surface portion 411 and the pair of rising portions 412. The water blocking material 7 is provided with a water passage portion penetrating in the direction of the eaves in a portion corresponding to the bottom surface portion 411.

According to this configuration, even if water infiltrates beyond the water blocking material 7, it can be drained to the eaves side through the water passage portion.

Further, it is preferable that the folded plate roof structure of the present embodiment has the following additional configurations. That is, in the folded plate roof structure of the present embodiment, the eaves side folded plate material 4 and the ridge side folded plate material 5 are composed of a goby type folded plate material.

According to this configuration, the eaves-side folded plate material 4 and the ridge-side folded plate material 5 are connected to each other in an unconstrained state even if the folded plate materials adjacent to each other in the ridge direction can be firmly connected to each other. Therefore, the amount of thermal expansion and contraction can be suppressed.

[Modification example]
In the folded plate roof structure of the above embodiment, the water blocking material 7 is adhered to the ridge-side end of the eaves side folding plate material 4, but the water blocking material 7 may have the following configuration, for example. ..

As shown in FIG. 12, the water blocking material 7 of the modified example is provided on the water blocking plate 9. The water stop plate 9 is sandwiched between the ridge-side folding plate material 5 and the eave-side folding plate material 4. The water stop plate 9 includes a water stop plate main body 91 and a water stop material 7 adhered to the upper surface and the lower surface of the water stop plate main body 91.

The waterstop main body 91 is composed of a metal plate formed in substantially the same cross-sectional shape as the eave-side folded plate material 4 and the ridge-side folded plate material 5. A plurality of drain holes 92 penetrating in the thickness direction are formed in the waterstop main body 91. The drain hole 92 is provided between the first waterproof packing 71 and the second waterproof packing 72, which will be described later.

A ridge 93 extending in a direction intersecting the eaves building is formed on the waterstop main body 91. A plurality of ridges 93 are provided in the direction of the eaves building, and a ridge projecting upward and having a tip close to the ridge-side folding plate material and a ridge projecting downward and having a tip close to the eaves-side folding plate material. I have.

The water blocking material 7 is continuously provided at positions corresponding to the bottom surface portion 411 and the pair of rising portions 412 in the eaves side folded plate material 4. Similar to the above embodiment, the waterproof material 7 includes a first waterproof packing 71 and a second waterproof packing 72, which are separated from each other in the eaves direction.

Further, although not particularly shown, the water stop material 7 provided on the lower surface of the water stop plate main body 91 is formed with a water passage portion penetrating in the direction of the eaves building. The water passage portion is formed by cutting out a part of the water blocking material 7, and communicates the space on the eave side and the space on the ridge side partitioned by the water blocking material 7 in the direction of the eaves. As a result, the rainwater that has flowed downward through the drain hole 92 of the waterstop main body 91 can be drained to the eaves side.

In the folded plate roof structure of this modification, a waterproof plate 9 is used instead of the waterproof material 7 bonded to the eaves side folded plate material 4 as in the above embodiment. Since the water stop plate 9 is provided with a plurality of ridges 93, even if rainwater infiltrates beyond the first water stop packing 71, the ridges 93 can block the rainwater. Therefore, it is possible to provide a ridge without pressing the end portion of the eaves side folded plate material 4, and it is possible to easily improve the water blocking property.

〔application〕
The folded plate roof structure of the above embodiment is configured to support the entire ridge side folded plate material 5 with the second support tool 6, but only the eaves side end portion of the ridge side folded plate material 5 is the second. It may be supported by the support 6 and the other portion may be supported by a support having a lower height than the second support 6 (for example, the first support 3).

The water blocking material 7 of the above embodiment is composed of two layers of standard packing, but is not limited to this. For example, it may be composed of an integral water blocking material 7 formed by punching. Further, although the waterproof material 7 of the above embodiment is composed of two waterproof packings 71 and 72, it may be provided with three or more rows of waterproof packings, and is not limited to the above embodiment.

The folded plate roof structure of the above embodiment is a double folded plate roof structure of the lower roof 1 and the upper roof 2, but the lower roof 1 is not provided and the lower roof 1 is replaced with the direct roof base. , The upper roof 2 may be constructed. In this case, the tight frame 11 may be used as the first support tool 3, and the tight frame 11 as the first support tool 3 may be raised by a spacer as the second support tool 6.

In addition, the configuration of the above embodiment can be appropriately redesigned as long as it does not deviate from the gist of the present invention.

3 First support 4 Eaves side folding board 411 Bottom side 412 Standing top 5 Building side folding board 6 Second support 60 Spacer member 7 Water stop material 722 Notch (water flow part)

Claims (5)

The eaves side folding board material supported by the first support fixed to the base,
The ridge-side folding board material is provided on the ridge-side folding board material, which is overlapped from above on the ridge-side folding board material and supported by the second support tool fixed to the base.
Ri unconstrained der each other and the ridge-side folding plate and the eaves side folding plate,
The first support tool is provided with an eaves-side folding plate material support surface that supports the eaves-side folding plate material, and is provided with the eaves-side folding plate material.
The second support tool is provided with a ridge-side folding plate material support surface that supports the ridge-side folding plate material.
The second support is configured so that the height from the base to the ridge-side folded plate support surface is higher than the height from the base to the eave-side folded plate support surface. > Folded plate roof structure characterized by that. The second support is configured by attaching a spacer member to the eaves-side folded plate support surface of the first support.
The folded plate roof structure according to claim 1, wherein the upper surface of the spacer member is a support surface for the folded plate material on the ridge side. Claim 1 or 2 is characterized in that a waterproof material is arranged between the ridge-side end of the eave-side folded plate material and the eave-side end of the ridge-side folded plate material. folded-plate roof structure according to. The eaves side folded board material is
The bottom part whose longitudinal direction is parallel to the eaves building direction and whose width direction is parallel to the ridge direction,
With a pair of rising parts raised from both ends in the width direction of the bottom part
Equipped with
The water blocking material is provided over the bottom surface portion and the pair of rising portions.
The folded plate roof structure according to claim 3 , wherein the water blocking material is provided with a water passage portion communicating with the eaves building in a portion corresponding to the bottom surface portion. The folded plate roof structure according to any one of claims 1 to 4, wherein the eave-side folded plate material and the ridge-side folded plate material are made of a goby-type folded plate material .

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