JP2012132175A - Folded-plate roof structure and reinforcement member used therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a folded-plate roof structure including an upper folded-plate roof laid above a lower folded-plate roof at a distance, capable of preventing degradation of water cut-off performance at the overlapping part of folded-plate materials constituting the upper folded-plate roof; and a reinforcement member used therefor.SOLUTION: A folded-plate roof structure includes an upper folded-plate roof 2 installed through a support fitting 7 disposed on a crest part 17 of a lower folded-plate roof 1. The upper folded-plate roof 2 is provided with a first folded-plate material 3, a second folded-plate material 4 which overlaps with a ridge-side end of the first folded-plate material 3 from above to be connected, and a water cut-off material 37 which is inserted into an overlapping part 21 of the first folded-plate material 3 and the second folded-plate material 4 and disposed more adjacent to the ridge than the support fitting 7. A reinforcement member 6 which supports the water cut-off material 37 is disposed between the first folded-plate material 3 and the lower folded-plate roof 1.

Description

  The present invention relates to a folded plate roof structure in which an upper folded plate roof is installed on a lower folded plate roof, and a reinforcing tool used therefor.

  2. Description of the Related Art Conventionally, a folded plate roof structure in which an upper folded plate roof is installed on the lower folded plate roof via a support fitting provided on a mountain portion of the lower folded plate roof is known (see, for example, Patent Document 1). ). In the folded plate roof structure described in Patent Document 1, a lower folded plate roof and an upper folded plate roof are formed in two upper and lower stages through a gap. The upper and lower folded plate roofs are arranged so that the peaks and valleys are arranged in the girder direction, and the longitudinal directions of the peaks and valleys are along the eaves-ridge direction.

  The upper folded plate roof includes a plurality of folded plate materials (for example, a first folded plate material, a second folded plate material,...) In the eaves-ridge direction. The plurality of folded plate materials in the eaves ridge direction are arranged so that, for example, the end of the first folded plate material on the ridge side is covered with the second folded plate material located on the ridge side. And the water stop material is interposed in the part which this 1st folded plate material and the 2nd folded plate material overlapped in order to prevent intrusion of rainwater. This water blocking material is disposed on the ridge side on the lower folded plate roof with respect to the support bracket that supports the upper folded plate roof, that is, disposed on the portion that is the free end in the first folded plate material. Yes.

  The upper folded plate roof is provided so as to be spaced apart from the lower folded plate roof in the vertical direction, and is not particularly supported in the portion where the water-stopping material of the first folded plate material is disposed.

JP 2000-199303 A

  By the way, in such a folded-plate roof structure, an operator arrange | positions folded-plate material in order toward the ridge side from the eaves side. The worker works on the folded plate material on the eaves side. At this time, if the operator gets on the free end portion where the water stop material is disposed, the portion may bend downward. In this case, even if the first folded plate material and the second folded plate material are overlapped and connected, the first folded plate material located below is bent in a direction away from the second folded plate material. There was a problem that the material was not sufficiently compressed, and the water stop performance deteriorated.

  In addition, even when the end portion of the first folded plate material is not bent in the direction away from the second folded plate material during construction, in the portion where the water stop material of the first folded plate material is disposed. Is not supported, when the first folded plate material and the second folded plate material are overlapped and connected, the end of the first folded plate material is pressed downward by the repulsive force of the elastic packing, The end portion of the folded sheet material 1 may bend downward. In this case as well, the water stop material is not sufficiently compressed, and the water stop performance is deteriorated.

  The present invention has been made in view of the above circumstances, and its object is to provide a folded plate material that constitutes the upper folded plate roof in the roof structure in which the upper folded plate roof is provided on the lower folded plate roof. An object of the present invention is to provide a folded-plate roof structure capable of preventing the water-stopping performance of the polymerized portion from deteriorating and a reinforcing tool used therefor.

  The folded plate roof structure of the present invention is a folded plate roof structure in which an upper folded plate roof 2 is installed via a support fitting 7 provided at a mountain portion 17 of the lower folded plate roof 1. Are the first folded plate material 3, the second folded plate material 4 connected to the ridge side end portion of the first folded plate material 3 from above, the first folded plate material 3 and the second folded plate material 3. The first folded plate material 3 and the lower folded plate roof 1 are provided with a water stop material 37 disposed on the ridge side with respect to the support fitting 7 while being interposed in the overlapping portion 21 with the folded plate material 4. The reinforcing tool 6 that supports the water-stopping material 37 is disposed between them.

  Thus, in the folded-plate roof structure of this invention, since the water stop material 37 is supported by the reinforcement tool 6, an operator is temporarily in the part in which the water stop material 37 in the 1st folded plate material 3 was arrange | positioned. Even if it gets on, the 1st folded plate material 3 is hard to change below. That is, the portion of the first folded plate material 3 where the water stop material 37 is disposed is not easily bent in the direction away from the second folded plate material 4, so that the water stop performance is not easily lowered.

  In addition, since the water-stopping material 37 is supported by the reinforcing tool 6 in the first folded plate material 3, the second folded-plate material 4 is connected, and the water-stopping material 37 is pressed from above by the second folded plate material 4. Even if it is done, the edge part of the 1st folded plate material 3 is hard to bend. Therefore, the water stop material 37 can be sufficiently compressed.

  Further, in this folded plate roof structure, the first folded plate material 3 is mounted on the overlapping portion 21 on the weir portion 36 projecting on the second folded plate material 4 side, and on the protruding end portion of the weir portion 36. It is preferable to provide the water stop material 37 provided.

  According to such a configuration, even if rainwater enters the overlapping portion 21 of the first folded plate material 3 and the second folded plate material 4, the rainwater is blocked by the dam portion 36, and then the waterstop material 37. To stop the water. That is, the folded plate roof structure of the present invention can improve the water stop performance by applying at least double water stop of the dam portion 36 and the water stop material 37. In addition, the strength of the portion of the first folded plate material 3 where the water blocking material 37 is disposed can be improved by the dam portion 36 provided in the first folded plate material 3, and the deformation of the portion is further prevented. Can be further improved.

  Further, in this folded plate roof structure, the first folded plate material 3 is provided on the overlapping portion 21 so as to project on the second folded plate material 4 side and on the eaves side with respect to the water stop material 37. It is preferable to have a long ridge 35 in the direction.

  According to such a configuration, even if rainwater enters the overlapping portion 21 of the first folded plate material 3 and the second folded plate material 4, the intrusion of the rainwater can be prevented by the protrusion 35. Moreover, since the protrusion 35 is formed long in the girder direction, the rigidity of the first folded plate material 3 can be increased.

  Moreover, in this folded-plate roof structure, the decompression space 51 for preventing intrusion of rainwater is provided between the protruding portion 35 protruding to the second folded-plate material 4 side and the water stop material 37. It is preferable.

  Thus, since the pressure-reduced space 51 is provided between the protrusion part 35 and the water stop material 37 in the eaves ridge direction, the folded-plate roof structure of this invention has the 1st folded-plate material 3 and the 2nd folding. Even if a capillary phenomenon occurs between the plate member 4 and rainwater is drawn in, it is possible to prevent water from entering the water stop material 37 side from the decompression space 51.

  Further, in this folded plate roof structure, the second folded plate material 4 covers the gap between the first folded plate material 3 and the second folded plate material 4 from the eaves side at the end of the eaves side. A piece 44 is preferably provided.

  Thus, since the folded-plate roof structure of this invention has the covering piece 44, even if a clearance gap arises between the 1st folded-plate material 3 and the 2nd folded-plate material 4, it is with the covering piece 44. Wind and rain can be blocked, and in addition to securing water stoppage by the water stop material 37, water infiltration can be further prevented.

  The reinforcing tool 6 of the present invention is a reinforcing tool 6 used in the above-mentioned folded plate roof structure, and an attachment portion 61 attached to an end of the first folded plate material 3 on the second folded plate material 4 side. A mounting portion 62 that contacts the lower folded plate roof 1, and a main body portion 63 that connects the mounting portion 61 and the mounting portion 62 and supports the water stop material 37. To do.

  Thus, since the reinforcement tool 6 of this invention can be attached to the 1st folded plate material 3, it does not shift | deviate at the time of construction, but improves workability | operativity.

  According to the folded plate roof structure of the present invention and the reinforcing tool used therefor, in the roof structure in which the upper folded plate roof is separated on the lower folded plate roof, the overlapping portions of the plurality of folded plate materials in the upper folded plate roof It is possible to prevent deterioration of the water stop performance.

It is a sectional side view of the folded-plate roof structure of one Embodiment of this invention. It is a side view just before installing the 2nd folded-plate material of embodiment same as the above. It is a disassembled perspective view of the upper folded board roof of embodiment same as the above. It is a perspective view of the reinforcement tool of embodiment same as the above. It is a perspective view of the support metal fitting of embodiment same as the above. It is sectional drawing which shows the use condition of the support metal fitting of embodiment same as the above, (a) is the shape of a seam part, and (b) is the shape of a round. It is a figure for demonstrating the upper folded board roof of embodiment same as the above, (a) is a disassembled perspective view (b), a top view (c) is principal part sectional drawing of a seam part. It is a figure for demonstrating the upper folded board roof of a comparative example, (a) is a disassembled perspective view (b) is a top view (c) is principal part sectional drawing of a seam part. It is sectional drawing which shows the folded-plate roof structure of a reference example. It is a perspective view which shows the drainage state of the upper folded board material of embodiment of FIGS. It is a perspective view which shows the modification of a 1st folded plate material. It is a perspective view which shows the modification of a 1st folded plate material. It is a perspective view which shows the modification of a 1st folded plate material.

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

  The folded plate roof structure of the present embodiment is obtained by replacing a newly installed upper folded plate roof 2 on the lower folded plate roof 1 in order to repair the existing lower folded plate roof 1. Further, the upper folded plate roof 2 is provided over the entire surface with a substantially constant interval, and is configured to have two upper and lower stages.

  As shown in FIG. 2, the lower folded plate roof 1 is an existing folded plate roof, and is installed via a tight frame 14 fixed on the main building 16. The lower folded board roof 1 is installed so that the peak part 17 and the trough part 18 may line up in the digit direction, and each longitudinal direction of the peak part 17 and the trough part 18 may be along the eaves-ridge direction. The lower folded plate roof 1 includes a plurality of lower folded plate roof materials 10 having a substantially V shape in a front view. As shown in FIG. 6 and the like, each lower folded plate roofing material 10 includes a flat portion 11 and a pair of upright portions 13 that are connected upward from both ends in a direction perpendicular to the longitudinal direction of the flat portion 11. The connecting portion 12 is provided at the end of the upright portion 13 in the beam direction, and the flat portion 11, the upright portion 13, and the connecting portion 12 bend a single metal plate. It is formed with. The lower folded plate roof 1 is fixed by connecting the connecting portions 12 and the suspension of the tight frame 14 to each other.

  The tight frame 14 has a plurality of projecting portions 15, and a hanger 141 is attached to the top of the projecting portion 15. The connecting portion 12 of the lower folded plate roof 1 is fastened to the hanging member 141 by a joint. A plurality of the tight frames 14 are arranged along the purlin 16. The purlin 16 is an existing exterior base material, and is composed of, for example, an H-shaped rope, a C-shaped rope, a lip groove-shaped rope, or the like.

  In order to install the lower folded board roofing material 10, it constructs as follows. First, a plurality of tight frames 14 are arranged side by side along the main building 16. Next, the substantially V-shaped lower folded board roofing material 10 is inserted into a recess 19 formed between the pair of projecting portions 15 of the tight frame 14, and the longitudinal direction of the lower folded board roofing material 10 is set in the eaves building. Arrange it along the direction. Thereby, the plurality of lower folded plate roofing materials 10 are arranged so as to be arranged in the longitudinal direction (girder direction) of the main building 16. And the connection parts 12 of the adjacent lower folded board roofing material 10 are joined by a splice. At this time, the lower folding plate roof material 10 and the tight frame 14 can be connected to each other via the hanging element 141 by bending the hanging element 141 together. A mountain-shaped portion constituted by the adjacent standing portions 13 becomes a mountain portion 17 in the lower folded plate roof 1.

  In addition, in the attachment of this lower folded board roof 1, it does not need to be joined by screwing, for example, a bolting or a fitting system may be used. Moreover, in the folded-plate roof structure of this embodiment, although the shape of the joint part was made into the square goby shape as shown to Fig.6 (a) etc., it is a round goby shape as shown to FIG.6 (b). It may be what.

  In order to repair the lower folded plate roof 1 installed in this way, an upper folded plate roof 2 is installed on the lower folded plate roof 1. As shown in FIG. 6, the upper folded plate roof 2 is attached on a support metal fitting 7 attached to the mountain portion 17 of the existing lower folded plate roof 1. The upper folded plate roof 2 is provided with a plurality of folded plate materials, and the plurality of folded plate materials are connected in a state where the ends are overlapped in the eave building direction, and are connected to each other in the girder direction by fastening. Hereinafter, the folding plate material on the eaves side will be referred to as a first folding plate material 3, and the folding plate material on the ridge side will be described as a second folding plate material 4.

  As shown in FIG. 3, the upper folded plate roof 2 is connected to the first folded plate member 3 and the second folded plate member that is connected to the ridge side end of the first folded plate member 3 from above. 4 and a water stop material 37 interposed in the overlapping portion 21 of the first folded plate material 3 and the second folded plate material 4.

  The first folded plate member 3 has a substantially V-shaped cross section and has substantially the same sectional shape as the lower folded plate roof member 10 of the lower folded plate roof 1. The first folded plate member 3 includes a flat portion 31, a pair of upright portions 32 that are continuously provided upward from both ends in a direction perpendicular to the longitudinal direction of the flat portion 31, and a girder direction of the upright portions 32. The flat portion 31, the standing portion 32, and the connecting portion 33 are formed by bending a single metal plate.

  The first folded plate member 3 has an overlapping portion 34 that is a portion covered from above by the second folded plate member 4 at the end of the ridge side. As shown in FIGS. 1 and 3, the first folded plate member 3 includes a protruding portion 35, a weir portion 36, and a water stop material 37 in the overlapping portion 34.

  As shown in FIG. 3 and the like, the protrusion 35 includes a rib 351 having a longitudinal direction in a direction intersecting the eaves ridge direction, and a plurality of the ribs 351 are arranged side by side in the eaves ridge direction. Is made up of. The rib 351 of the present embodiment is formed such that its longitudinal direction is a direction perpendicular to the eaves-ridge direction. The rib 351 is formed by embossing so as to protrude upward and to have a concave back surface. The ribs 351 have drainage channels 352 communicating with the eaves-ridge direction at a plurality of locations. The drainage channel 352 is formed so as not to overlap the drainage channel 352 of another rib 351 adjacent to the eaves building direction. In addition, although the protrusion part 35 of this embodiment is formed so that the protrusion height is substantially the same as the upper end of the dam part 36, or lower than this, this protrusion part 35 is the 2nd folded plate material, for example 4 may be provided so as to be in contact with the back surface of the cover 4, and the protrusion height is not particularly limited.

  A decompression space 51 is formed between the protrusion 35 and the weir 36 to prevent rainwater from being drawn in due to a capillary phenomenon. The decompression space 51 has a dimension between the opposing ends of the first folded plate member 3 and the second folded plate member 4 in the vertical direction between the protruding end of the ridge 35 and the second folded plate member 4. It is larger than the dimensions. The decompression space 51 is formed by the ridge portion 35. The decompression space 51 includes a first decompression space 51a formed by a pair of ribs 351 arranged side by side in the eaves ridge direction, and a second decompression space 51b formed by the ridge-side rib 351 and the weir portion 36. have. The decompression space 51 cuts off the rainwater drawn by the capillary phenomenon that occurs in the first folded plate material 3 and the second folded plate material 4, and prevents water from entering the building more than that. A dam portion 36 is provided on the ridge side of the decompression space 51.

  As shown in FIG. 1 and the like, the weir portion 36 is provided so as to be located on the ridge side with respect to the protruding portion 35, and is formed on the ridge side edge of the first folded plate material 3. The weir portion 36 includes an upright portion 361 that protrudes from the flat portion 31 or the upright portion 32 at a substantially right angle toward the second folded plate member 4 side, and a continuous portion from the upper end of the upright portion 361 toward the ridge side. It is comprised from the provided water-stop material arrangement | positioning part 362, and these are bent and formed in the cross-sectional L-shape. The weir part 36 is provided so as to straddle the flat part 31 and the standing part 32.

  As shown in FIG. 1, a reinforcing member mounting piece 38 is extended from the ridge side end of the dam portion 36 to the dam portion 36. The reinforcing member mounting piece 38 of the present embodiment is configured by the end portion of the water stop material disposing portion 362 of the dam portion 36. The reinforcing member mounting piece 38 has a mounting hole (not shown) penetrating vertically.

  A reinforcing tool 6 for supporting the water stop material 37 is attached to the reinforcing tool mounting piece 38 of the first folded plate material 3. As shown in FIG. 4, the reinforcing tool 6 includes an attaching part 61 attached to the reinforcing tool attaching piece 38, a mounting part 62 that comes into contact with the upper surface of the lower folded plate roof 1, an attaching part 61, and the mounting part described above. A main body 63 that connects the portion 62 and supports the lower portion of the water stop material 37 is provided, and these are formed by bending one metal plate. The mounting portion 61 is configured to sandwich the reinforcing member mounting piece 38 from the vertical direction, and is drilled so that the fixing tool insertion hole 64 penetrates vertically. The main body portion 63 and the placement portion 62 are formed in a substantially L-shaped cross section, and are arranged so that the end portion of the placement portion 62 faces the ridge side. The reinforcing tool 6 is disposed between the flat portion 31 of the first folded plate material 3 and the flat portion 11 of the lower folded plate roof 1 and is supported by the flat portion 11 of the lower folded plate roof 1.

  The reinforcing tool 6 has its mounting portion 61 sandwiched between the reinforcing tool mounting pieces 38 of the first folded plate member 3, and then the fixing tools 8 such as screws are inserted into the fixing tool insertion holes 64 and the mounting holes of the reinforcing tool mounting pieces 38. It is attached by inserting from above. The reinforcing tool 6 is fixedly attached to the first folded plate material 3 so that it does not shift or come off during work.

  The water blocking material 37 is constituted by a belt-shaped rubber packing. The water stop material 37 is fixed to the water stop material disposing portion 362 of the first folded plate material 3 by adhesion. The water stop material 37 is disposed on the ridge edge side of the support bracket 7 that supports the upper folded plate roof 2, and is disposed over the entire length of the edge on the ridge side of the first folded plate material 3. .

  As shown in FIG. 3, the second folded plate member 4 has a structure similar to that of the first folded plate member 3 and has a substantially V-shaped cross section. The second folded plate material 4 has a cross-sectional shape that is substantially the same as that of the first folded plate material 3, and can be overlapped in a state substantially parallel to the first folded plate material 3. Similar to the first folded plate material 3, the second folded plate material 4 includes a flat portion 41 and a pair of upright portions that are connected upward from both ends in a direction perpendicular to the longitudinal direction of the flat portion 41. 42 and a connecting portion 43 provided at the end of the upright portion 42 in the digit direction. The flat portion 41, the standing portion 42, and the connecting portion 43 are formed by bending a single metal plate. It is formed by doing.

  The second folded plate member 4 has a covering piece 44 continuously provided at the end of the eaves side. The covering piece 44 is configured such that a protruding tip thereof is close to and opposed to the first folded plate material 3, and an eave side end portion of the second folded plate material 4 is bent to the first folded plate material 3 side. It is formed by that. Thereby, the covering piece 44 covers the gap between the first folded plate material 3 and the second folded plate material 4.

  In addition, the ridge part 35, the dam part 36, the water stop material 37, etc. are formed in the edge part of the ridge side of the 2nd folded plate material 4 similarly to the 1st folded plate material 3, and 3rd An end portion of a folded plate material (not shown) is covered and connected. In addition, a covering piece 44 is formed at the end of the first folded plate member 3 on the eaves side, similarly to the second folded plate member 4.

  The support fitting 7 is attached to the mountain portion 17 of the existing lower folded plate roof 1, and the upper folded plate roof 2 is disposed in a state where a certain gap is formed above the lower folded plate roof 1. As shown in FIGS. 5 and 6, the support fitting 7 according to the present embodiment is provided in the lower part of the support body and has an inverted V-shaped attachment that is attached to the inclined surface of the mountain portion 17 of the lower folded plate roof 1. A wearing portion 71 and a suspension 72 fixed to the support body by bolts are provided.

  The upper folded board roof 2 having such a configuration is installed on the lower folded board roof 1 as follows.

  First, the operator fixes a plurality of support fittings 7 at predetermined locations on the mountain portion 17 of the lower folded plate roof 1 (see FIG. 6). With the mounting portion 71 of the support metal fitting 7 placed on the mountain portion 17 of the lower folding plate roof 1, the bolts pass through the mounting portion 71, the standing portion 13 of the lower folding plate roof material 10, and the tight frame 14 in this order. Then, the support fitting 7 is placed on the mountain portion 17 of the lower folded plate roof 1. Next, the first folded plate material 3 of the upper folded plate roof 2 is disposed at a predetermined position from above the support fitting 7 and then the second folded portion 34 of the first folded plate material 3 is covered. The ends of the folded plate material 4 on the eaves side are overlapped.

  Next, another folded plate material is disposed in the valley portion 18 adjacent in the girder direction. In the folded-plate roof structure of this embodiment, as shown in FIG.7 (b), the superposition | polymerization part 21 of the adjacent folded-plate material is adjacent to the superposition | polymerization part 21 of the said 1st folded-plate material 3 and the 2nd folded-plate material 4. Arrange them so that they do not overlap. That is, the overlapping portions 21 arranged in the girder direction are arranged so as to be displaced in the eaves-ridge direction. In this state, the connecting portions 33 (43) are sequentially joined and fastened. In addition, a manual or automatic dedicated caulking tool is used for this seam fastening operation. In this way, the upper folded board roof 2 can be installed on the lower folded board roof 1.

  Here, in the folded plate roof structure of the present embodiment, as shown in FIG. 2, the support bracket 7 that supports the upper folded plate roof 2 is on the eaves side with respect to the edge of the first folded plate member 3 on the ridge side. Therefore, in the state where the reinforcing tool 6 is not attached, the edge on the ridge side becomes a free end. Therefore, in the conventional folded-plate roof structure to which the reinforcing tool 6 is not attached, there is a risk of bending downward if an operator gets on this portion during roofing work. In particular, since the water stop material 37 is disposed at the free end portion, if this end portion is bent away from the second folded plate material 4, there is a problem that sufficient water stop performance cannot be obtained. End up.

  However, in the folded plate roof structure of the present embodiment, the reinforcing tool 6 is attached to the end of the first folded plate material 3 on the ridge side, and the portion where the water blocking material 37 is disposed is supported by the reinforcing tool 6. ing. For this reason, even if an operator gets on the part in which the water stop material 37 in the 1st folded plate material 3 is arrange | positioned, the 1st folded plate material 3 is hard to deform | transform below. That is, the portion of the first folded plate material 3 where the water stop material 37 is disposed is not easily bent in the direction away from the second folded plate material 4, so that the water stop performance is not easily lowered.

  In addition, since the water-stopping material 37 is supported by the reinforcing tool 6 in the first folded plate material 3, the second folded-plate material 4 is connected, and the water-stopping material 37 is pressed from above by the second folded plate material 4. Even if it is done, the edge part of the 1st folded plate material 3 is hard to bend. Therefore, the water stop material 37 can be sufficiently compressed, and the water stop performance can be improved.

  In this regard, for example, as shown in FIG. 9, the shape of the upper folded plate roof 2 is changed to the shape of the lower folded plate roof 1 so that the flat portion 22 of the upper folded plate roof 2 abuts on the flat portion 11 of the lower folded plate roof 1. It is possible to make it different. However, in such a case, there is a problem that equipment for manufacturing the upper folded board roof 2 different from the lower folded board roof 1 is required, and the capital investment cost is enormous. On the other hand, in the folded plate roof structure of this embodiment, since the upper folded plate roof 2 and the lower folded plate roof 1 have substantially the same shape, the same manufacturing equipment can be used. Moreover, there is an advantage that the strength and drainage performance at least equivalent to those of the existing folded plate roof can be secured.

  Moreover, even if the folded-plate roof structure of this embodiment snows on the upper folded-plate roof 2, and receives the excessive load to the 2nd folded-plate material 4, the 1st folded-plate material 3 and the lower folded-plate roof 1 and Since the reinforcing tool 6 is disposed between the two, the end of the first folded plate member 3 on the ridge side is pressed downward via the water blocking member 37, and the portion is bent downward. Deformation can be prevented.

  Moreover, since the protruding part 35 is provided in the folded-plate roof structure of this embodiment, contact | adherence with the 1st folded-plate material 3 and the 2nd folded-plate material 4 can be prevented. Moreover, the protruding portion 35 forms a decompression space 51 on the ridge side of the protruding portion 35 and between the first folded plate material 3 and the second folded plate material 4. By preventing the close contact between the first folded plate material 3 and the second folded plate material 4, it is possible to prevent the occurrence of capillary action, and in addition to this, the decompression space 51 is formed. Inundation due to generation can be prevented.

  In addition, the folded plate roof structure of the present embodiment is configured to cover the gap between the first folded plate member and the second folded plate member formed by the protrusion 35 with the covering piece 44. Therefore, wind and rain can be blocked by the covering piece 44, and water stoppage can be further secured.

  Furthermore, the clearance between the first decompression space 51a on the eaves side becomes small because the free end of the second folded plate material 4 is blown by a strong wind, and the first folded plate material 3 and the second folded plate material 4 are assumed. In the folded plate roof structure of the present embodiment, the second decompression space 51b is arranged in parallel to the ridge side of the first decompression space 51a. It acts and can prevent further water immersion.

  Further, even if the first folded plate material 3 or the second folded plate material 4 has manufacturing distortion or dimensional variation, the protruding portion 35 is not affected by the distortion or variation. 3 and the second folded plate material 4 can be prevented from being adhered to each other, and the occurrence of capillary action can be reduced, so that the water stop effect can be surely exhibited.

  Moreover, since the ridge 35 is composed of a plurality of ribs 351 arranged in the eaves-ridge direction, even if a strong wind blows between the first folded plate material 3 and the second folded plate material 4, this wind pressure It is possible to gradually reduce the pressure of the water and prevent rainwater from entering the wind. Moreover, since the protrusion 35 is formed long in the girder direction, the rigidity of the first folded plate material 3 can be increased.

  Further, in the folded plate roof structure of the present embodiment, even if rainwater enters the decompression space 51, the rainwater is provided on the standing portion 32 as shown by the arrow in FIG. Is guided to the flat part 31 and then flows to the eaves side due to the inclination in the eaves ridge direction. At this time, since the protrusion 35 has a drainage channel 352, rainwater can be drained through the drainage channel 352. Thereby, generation | occurrence | production of the rust and corrosion by water staying in the decompression space 51 can be prevented.

  Further, as shown in FIG. 1, the folded plate roof structure of the present embodiment performs primary water stop by the covering piece 44, performs secondary water stop by the protrusion 35 and the decompression space 51, and further by the weir part 36. Since it is configured to perform the tertiary water stop and finally perform the fourth water stop by the water stop material 37, it is possible to perform the reliable water stop.

  Moreover, in the folded plate roof structure of the present embodiment, since the water stop material 37 is disposed on the weir portion 36 protruding to the second folded plate material 4 side, the strength of the portion where the water stop material 37 is disposed. Can be further improved.

  Further, the folded plate roof structure of the present embodiment is such that the overlapped portion 21 connecting the first folded plate member 3 and the second folded plate member 4 does not overlap with the overlapped portion 21 located immediately next to the digit direction. It is shifted in the direction of the eaves. For this reason, a gap is less likely to occur when the folded plate materials are caulked compared to a structure in which adjacent overlapping portions 21 overlap each other in the spar direction. That is, as shown in FIG. 7 (c), the folded plate roof structure of the present embodiment has three folded plate materials, whereas in the structure in which adjacent overlapping portions 21 are overlapped in the digit direction. The folded plate material is quadruple (see FIG. 8). In other words, the folded plate roof structure of the present embodiment has a reduced number of overlapping folded plate materials, so that it can be reliably crimped, and as a result, the water stop performance is improved.

  In addition, although the protrusion part 35 of the 1st folded plate material 3 of this embodiment was comprised by the some rib 351 whose longitudinal direction became a direction orthogonal to the eaves-ridge direction, it is the following structures, for example. There may be. Hereinafter, the modification of the protrusion part 35 is shown.

  As shown in FIG. 11, in the first modification, the rib 351 provided on the standing portion 32 is inclined so that the lower portion is positioned on the ridge side, and the rib 351 provided on the flat portion 31 is inverted. It is shaped like a character and is inclined so that it is located closer to the eaves toward the center. A drainage channel 352 is formed in the center of the rib 351 of the flat portion.

  In Modification 2, as shown in FIG. 12, projections 39 having an elliptical shape in plan view are arranged in a straight line instead of the protrusions 35. The protrusions 39 arranged in a straight line are arranged side by side in the eaves-ridge direction. A drainage path 352 is formed between the protrusions.

  As shown in FIG. 13, the third modification is an example in which the number of rows arranged in the eaves-ridge direction of the ribs 351 of the ridge 35 is two rows instead of four rows.

  Even if it is the protrusion part 35 comprised as mentioned above, the same effect as the protrusion part 35 in the folded-plate roof structure of this embodiment can be acquired.

  As mentioned above, although the folded-plate roof structure of this invention was demonstrated based on the folded-plate roof structure which replaces the newly installed folded-plate roof on the existing folded-plate roof, the folded-plate roof structure of this invention is a double folded-plate roof structure. As long as it is, it is not limited only to the replacement structure. The folded plate roof structure of the present invention can be applied to a double folded plate roof structure in which a lower folded plate roof and an upper folded plate roof are both newly constructed folded plate roofs, for example.

1 Lower folded board roof 10 Lower folded board roof material 11 Flat part (lower folded board roof material)
12 connection part (lower folding board roofing material)
13 Standing part (lower folding plate roofing material)
DESCRIPTION OF SYMBOLS 14 Tight frame 141 Hanging element 15 Protrusion part 17 Mountain part 18 Valley part 19 Recess 2 Upper folded board roof 21 Overlapping part 3 1st folded board material 31 Flat part (1st folded board material)
32 Standing part (first folded plate material)
33 Connecting part (first folded plate material)
34 superposition part 35 ridge part 36 dam part 37 water stop material 4 2nd folded plate material 41 flat part (2nd folded plate material)
42 Standing part (second folded plate material)
43 connecting part (second folded plate material)
44 Covering Piece 51 Depressurized Space 6 Reinforcing Tool 61 Mounting Portion 62 Mounting Portion 63 Main Body 7 Support Bracket

Claims (6)

A folded plate roof structure in which an upper folded plate roof is installed via a support fitting provided at a mountain portion of the lower folded plate roof,
The upper folded plate roof
A first folded plate material;
A second folded plate material connected so as to overlap the ridge side end of the first folded plate material from above;
A water stop material disposed between the first folded plate material and the second folded plate material and disposed closer to the ridge than the support fitting,
A folded plate roof structure, wherein a reinforcing tool for supporting the water blocking material is disposed between the first folded plate material and the lower folded plate roof. The first folded plate material includes a weir portion projecting on the second folded plate material side and the waterstop material placed on the projecting end portion of the weir portion at the overlapping portion. The folded plate roof structure according to claim 1. The first folded plate material is provided with a protruding portion that protrudes on the second folded plate material side and is longer on the eaves side than the water-stopping material in the overlapping portion. The folded plate roof structure according to claim 1, wherein the folded plate roof structure is characterized. 4. The folded plate according to claim 3, wherein a decompression space for preventing intrusion of rainwater is provided between the protruding portion projecting toward the second folded plate material and the waterstop material. Roof structure. The second folded plate material is provided with a covering piece that covers a gap between the first folded plate material and the second folded plate material from an eave side at an end portion on the eave side. The folded-plate roof structure as described in any one of Claims 1 thru | or 4. It is a reinforcing tool used for the folded-plate roof structure as described in any one of Claims 1 thru | or 5,
An attachment portion attached to an end of the first folded plate material on the second folded plate material side;
A placement portion that contacts the lower folded plate roof;
A reinforcing tool comprising: a main body portion that connects the mounting portion and the mounting portion and supports the waterstop material.

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