JP5643608B2 - Fixing method and structure for rooftop installation - Google Patents

Description

  The present invention relates to a fixing method and a fixing structure for a rooftop installation used when fixing the rooftop installation on an ALC panel constituting a roof.

  Conventionally, a roof of a building is configured using an ALC panel (lightweight cellular concrete panel), and a rooftop installation such as a solar power generation module may be fixed to the roof (for example, a patent) Reference 1).

  In Patent Document 1, a through hole is formed in the ALC panel constituting the roof, a bolt is passed through the through hole from below, and a frame of the photovoltaic power generation module is fastened and fixed to the upper end of the bolt.

JP 2002-206317 A

  However, when the through holes are formed in the ALC panel constituting the roof as in Patent Document 1, there are the following problems.

  That is, if the method of Patent Document 1 is applied to an existing building, the bolt must be inserted into the through-hole from the lower side of the ALC panel, so the ceiling interior material, the heat insulating material, etc. must be removed once. Therefore, large-scale renovation work is required on the indoor side.

  Moreover, since the main raw materials are silica stone, cement, quicklime, etc., the ALC panel has the property which is easy to break, and the risk that a crack will generate | occur | produce by forming a through-hole like patent document 1 increases.

  This invention is made | formed in view of this point, The place made into the objective does not require a large-scale repair work indoors, when installing a rooftop installation in the ALC panel which comprises a roof. In addition, it is to prevent the ALC panel from cracking after installation.

  In order to achieve the above-mentioned object, in the present invention, the mounting base of the rooftop is fixed to a plurality of ALC panels, and at this time, a fixture inserted to a depth reaching the middle part in the thickness direction of the panel is used.

The first invention is a fixing method for fixing a roof installed object using the gantry to ALC panel constituting a roof, a second 1ALC panel, the joint portion between the first 2ALC panel adjacent to said 1ALC panel rebar A fixture in which the base is placed directly above the reinforcing bar, and the base of the base is inserted into the first ALC panel and the second ALC panel to a depth that reaches the middle of the thickness direction of the panels. It is characterized by comprising a pedestal fixing step for fixing using a roof, and a rooftop fixture fixing step for fixing the rooftop fixture on the pedestal.

  According to this configuration, since the fixture for the pedestal can only be inserted to a depth that reaches the middle in the thickness direction of the first ALC panel and the second ALC panel, the pedestal can be fixed to the ALC panel without forming a through hole in these ALC panels. It becomes possible to do. Thereby, it becomes possible to perform construction without removing the ceiling interior material, the heat insulating material, and the like.

  Furthermore, since no through-hole is formed in the ALC panel, a decrease in strength of the ALC panel itself is prevented as compared with the conventional example.

  Moreover, since the load of the rooftop installation works in a distributed manner on the first ALC panel and the second ALC panel, cracking of these ALC panels is prevented.

Further, since the gantry is positioned directly above the reinforcing bar, it is possible to reduce the load on the ALC panel.

  According to a second aspect, in the first aspect, the gantry includes a hollow columnar member extending in the vertical direction, the lower end portion of the columnar member is opened, and the lower end portion is fixed to the ALC panel. A flange is provided, and in the gantry fixing step, the gantry is arranged so that the open portion of the columnar member is located at the joining portion of the first ALC panel and the second ALC panel, and the flange is fixed to both panels. It is what.

  That is, the vicinity of the edge of the ALC panel may be more easily broken than the inner part. In the present invention, since the open part of the gantry is positioned at the joint between the first ALC panel and the second ALC panel, it is possible to reduce the load applied to the edge of each ALC panel and make it difficult to break the ALC panel. .

  According to a third invention, in the second invention, at least four substantially rectangular ALC panels are arranged close to each other so that the corners thereof are aligned, and in the gantry fixing step, the columnar members of the gantry are opened. The gantry is fixed in a state in which the portion coincides with the corners of the four ALC panels.

That is, the vicinity of the corner of the ALC panel may be more easily broken than the inner part. In the present invention, since the open part of the columnar member of the gantry is made to coincide with the corners of the four ALC panels, it is possible to reduce the load applied to the corners of each ALC panel and make the ALC panel difficult to break. Become. Furthermore, the load of the rooftop installation works on the four ALC panels in a distributed manner, and this also makes it difficult to break the ALC panel .

According to a fourth aspect of the present invention, there is provided a roof-top installation fixing structure in which the ALC panel constituting the roof is fixed to the roof-top installation using a mount. The base of the mount includes a first ALC panel and a first ALC panel adjacent to the first ALC panel. It is fixed to a 2ALC panel using a fixture inserted to a depth that reaches the middle in the thickness direction of the panel, and the rooftop installation is fixed to the gantry.

  According to this configuration, similarly to the first invention, it is possible to perform the construction without removing the ceiling interior material, the heat insulating material, etc., and the strength of the ALC panel itself is prevented from being reduced, and the ALC panel is not cracked. To be prevented.

According to a fifth invention, in the fourth invention, the gantry includes a hollow columnar member extending in the vertical direction, the lower end portion of the columnar member is opened, and the lower end portion is fixed to the ALC panel. A flange is provided, the open portion of the columnar member is positioned at a mating portion between the first ALC panel and the second ALC panel, and the flange is fixed to both panels.

  According to this configuration, similarly to the second invention, it is possible to reduce the load applied to the edge of each ALC panel and make it difficult to break the ALC panel.

According to the first and fourth inventions, the base of the gantry is fixed to the first ALC panel and the second ALC panel using a fixture inserted to a depth that reaches the middle in the thickness direction of these panels. . Thereby, it can construct without requiring large-scale repair work indoors, and can prevent the ALC panel from cracking after installation.

Further, since the gantry is positioned directly above the reinforcing bar disposed at the joint portion between the first ALC panel and the second ALC panel, the ALC panel can be made more difficult to break.

According to the second and fifth inventions, the lower end of the columnar member of the gantry is opened, and the gantry is fixed so that the open portion is located at the joint between the first ALC panel and the second ALC panel. The load applied to the edge of the can be reduced. Thereby, even if it is a case where a big load acts, an ALC panel can be made hard to break.

According to the third invention, since the open part of the columnar member of the gantry is made to coincide with the corners of the four ALC panels, the load applied to the corners of each ALC panel is reduced and the ALC panels are hardly broken. it can be.

It is sectional drawing explaining the fixing method of the photovoltaic power generation module concerning embodiment. It is a perspective view in the state where a mount was fixed. It is the III-III sectional view taken on the line in FIG. It is a top view of a mount. It is a top view of the roof of the state which peeled off the rooftop waterproof sheet and formed a hole in the ALC panel. FIG. 2 is a view corresponding to FIG. 1 in a state where holes are formed in the ALC panel. It is a top view in the state where a mount was fixed. FIG. 2 is a view corresponding to FIG. 1 in a state where a gantry is fixed. FIG. 2 is a view corresponding to FIG. 1 showing the mounting of the waterproof member. It is FIG. 2 equivalent view concerning the modification of embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely illustrative in nature, and is not intended to limit the present invention, its application, or its use.

  Drawing 1 is a figure explaining the case where a rooftop installation thing is fixed using a fixing method of a rooftop installation thing concerning an embodiment of the present invention.

  The building on which the rooftop installation is installed includes, for example, a house and a factory, but is not limited thereto, and the present invention can be applied to the case where the rooftop installation is fixed on the roof of various buildings. Moreover, although the rooftop installation object is the photovoltaic power generation module 100 in this embodiment, the present invention is not limited to this, and the present invention can be applied when various devices and members are fixed on the rooftop.

  First, the structure of the roof A of the building will be described. This roof A is a so-called flat roof, and as shown in FIG. 2, a beam B1 made of H-shaped steel and a beam B2 extending in the horizontal direction, and a number of ALC panels C1 to C4 (four in the figure). Only shown). The beams B1 and B2 extend substantially horizontally and are orthogonal to each other.

  The ALC panels C1 to C4 have the same shape, and are formed in a substantially rectangular plate shape. The first ALC panel C1, the second ALC panel C2, the third ALC panel C3, and the fourth ALC panel C4 are arranged close to each other so as to match each other's corners. The dimension between the edges of the ALC panels C1 to C4 is set to about 20 mm. Joint reinforcement D is disposed between the edges of the ALC panels C1 to C4. Moreover, the mortar E is filled between the edges of the ALC panels C1 to C4, and the joint reinforcement D is embedded in the mortar E.

  The beams B1 and B2 are located below both ends in the longitudinal direction of the ALC panels C1 to C4 and below both ends in the width direction. The peripheral portions of the ALC panels C1 to C4 are the beams B1 and B2. Is supported by. The support width of the ALC panels C1 to C4 by the beams B1 and B2 is set to about 40 mm or more.

  A rooftop waterproof sheet S made of a vinyl chloride material is provided on the first to fourth ALC panels C1 to C4.

  Next, the structure of the gantry 10 of the photovoltaic power generation module 100 will be described. As shown in FIGS. 3 and 4, the gantry 10 includes a hollow columnar member 11 extending in the vertical direction, a flange 12 provided at the lower end portion of the columnar member 11, a plate member 13 provided at the upper end portion, And a bolt 14 to which the photovoltaic module 100 is attached.

  The columnar member 11 is composed of a steel pipe whose upper and lower ends are open. The outer diameter of the columnar member 11 is, for example, about 100 mm, and the length is, for example, about 200 mm. The flange 12 extends radially outward from the peripheral edge of the lower end of the columnar member 11, and the plate material constituting the flange 12 and the steel pipe constituting the columnar member 11 are welded over the entire circumference. Further, the lower end portion of the columnar member 11 is not covered with the plate material that constitutes the flange 12, and is entirely open.

  The plate member 13 is for closing the upper end portion of the columnar member 11, and is formed in a disc shape having substantially the same diameter as the outer diameter of the columnar member 11. The entire circumference of the plate material 13 is welded to the columnar member 11.

  The bolt 14 is fixed to the plate material 13. That is, a through hole 13 a through which the shaft portion of the bolt 14 is inserted is formed at a substantially central portion of the plate material 13. The bolt 14 is inserted into the through hole 13a from the inside of the columnar member 11. In this state, the entire circumference of the head of the bolt 14 is welded to the peripheral edge of the through hole 13 a of the plate material 13.

  Vinyl chloride coating is applied to the inner and outer surfaces of the columnar member 11, the upper and lower surfaces of the flange 12, and the upper and lower surfaces of the plate member 13. This vinyl chloride coating is, for example, a so-called dipping coating performed by immersing the columnar member 11, the flange 12 and the plate material 13 in a tank containing a flowable vinyl chloride.

  As shown in FIG. 7, the gantry 10 is fixed to the roof by fastening the flange 12 to the first to fourth ALC panels C1 to C4 with screws (tapping screws) F1 to F4. Yes. The flange 12 is formed with first screw holes 12a and 12a (shown in FIG. 4) through which the two screws F1 and F1 inserted into the holes 101 and 101 (shown in FIG. 5) of the first ALC panel C1 are inserted. Second screw holes 12b and 12b (shown in FIG. 4) through which the two screws F2 and F2 inserted into the holes 102 and 102 (shown in FIG. 5) of the second ALC panel C2 are inserted are formed, and the third ALC panel is formed. Third screw holes 12c and 12c (shown in FIG. 4) through which the two screws F3 and F3 inserted into the holes 103 and 103 (shown in FIG. 5) of C3 are inserted are formed, and the hole 104 of the fourth ALC panel C4 is formed. , 104 (shown in FIG. 5), fourth screw holes 12d and 12d (shown in FIG. 4) through which the two screws F4 and F4 inserted are formed.

  The first screw holes 12 a and 12 a are formed with a gap in the circumferential direction of the flange 12. The distance between the centers of the first screw holes 12a, 12a is set to about 60 mm. The first screw holes 12a and 12a are thus spaced apart if the screw holes 12a and 12a are too close to each other, the screws F1 and F1 are inserted into the screw holes 12a and 12a and screwed into the ALC panel C1. This is because sometimes the ALC panel C1 is easily broken. That is, the first screw holes 12a and 12a need only be separated to such an extent that the ALC panel C1 does not crack, and may be, for example, about 50 mm. Further, the first screw holes 12 a and 12 a are provided in an outer region than the center portion in the radial direction of the flange 12.

  The second screw holes 12b and 12b are also formed at intervals similar to the first screw holes 12a and 12a. The distance between the first screw holes 12a, 12a and the second screw holes 12b, 12b is set wider than the distance between the centers of the first screw holes 12a, 12a.

  The third screw holes 12c, 12c and the fourth screw holes 12d, 12d are also provided in the same manner as the first screw holes 12a, 12a and the second screw holes 12b, 12b.

  The first screw holes 12a, 12a and the fourth screw holes 12d, 12d are point-symmetric with the center of the columnar member 11 as the center of symmetry, and the second screw holes 12b, 12b and the third screw holes 12c, 12c are both , Point symmetry with the center of the columnar member 11 as the center of symmetry.

  Further, the first screw holes 12a, 12a are arranged so as to be located 50 mm or more inside from the edge of the first ALC panel C1. The positions of the first screw holes 12a and 12a are set in this way because when the screws F1 and F1 (shown in FIG. 7) are screwed into the ALC panel C1, the screws F1 and F2 are connected to the ALC panel C1. This is because the ALC panel C1 tends to break if it is too close to the edge. That is, it is only necessary that the first screw holes 12a and 12a are separated from the edge of the ALC panel C1 to such an extent that the ALC panel C1 is not cracked. The same applies to the second to fourth screw holes 12b to 12d.

  The screws F1 to F4 are screwed into plastic anchors 80 respectively inserted into holes 101 to 104 (shown in FIG. 5) formed in advance in the ALC panels C1 to C4. Since the plastic anchor 80 has been conventionally used when screwing into concrete, detailed description thereof will be omitted.

  As shown in FIG. 6, the depths of the holes 101 to 104 of the ALC panels C <b> 1 to C <b> 4 are depths that reach midway portions in the thickness direction of the ALC panels C <b> 1 to C <b> 4, and the holes 101 to 104 do not penetrate. The screws F1 to F4 are screwed in until their tips are located near the bottoms of the holes 101 to 104 of the ALC panels C1 to C4.

  As shown in FIG. 4, first through holes 12e and 12e are formed between the first screw holes 12a and 12a and the third screw holes 12c and 12c. The first through holes 12e and 12e are arranged at intervals in the circumferential direction of the flange 12. The first through holes 12e and 12e are opened at portions closer to the center of the columnar member 11 than the first screw holes 12a and 12a and the second screw holes 12b and 12b.

  Between the second screw holes 12b and 12b and the fourth screw holes 12d and 12d, second through holes 12f and 12f are formed in the same manner as the first through holes 12e and 12e.

  The first through holes 12e and 12e and the second through holes 12f and 12f are not shown, but are inserted with screws used when the gantry 10 is fixed to a roof having another structure.

  The gantry 10 is covered with a waterproof member 40 as shown in FIG. As shown in FIG. 9, the waterproof member 40 includes a cylindrical portion 41 that covers the outer surface of the columnar member 11 and a plate-like portion 42 that covers the upper surface of the flange 12. The waterproof member 40 is entirely made of a vinyl chloride sheet.

  Next, the case where the photovoltaic power generation module 100 is fixed on the rooftop of an existing building using the gantry 10 will be described.

  First, a part of the rooftop waterproof sheet S on the roof A is peeled off. The site where the rooftop waterproof sheet S is peeled off is a fixed site of the gantry 10 and is a site corresponding to the corners of the first to fourth ALC panels C1 to C4. The range where the rooftop waterproof sheet S is peeled is larger than the flange 12 of the gantry 10.

  Thereafter, as shown in FIGS. 5 and 6, holes 101 to 104 for screwing screws F1 to F4 are formed in the first to fourth ALC panels C1 to C4. As described above, since the positions of the holes 101 to 104 are about 50 mm away from the edge of the first to fourth ALC panels C1 to C4, the first to fourth ALC panels C1 to C4 are not cracked.

  Thereafter, the gantry 10 is placed on the first to fourth ALC panels C1 to C4, and the screw holes 12a to 12d are aligned with the holes 101 to 104 of the first to fourth ALC panels C1 to C4. In this state, the open part of the columnar member 11 of the gantry 10 coincides with the corners of the first to fourth ALC panels C1 to C4, and the corners are located inside the open part.

  After that, as shown in FIGS. 2, 7 and 8, the screws F1 to F4 are inserted into the screw holes 12a to 12d to the plastic anchors 80 in the holes 101 to 104 of the first to fourth ALC panels C1 to C4. Insert and screw in. When the front ends of the screws F1 to F4 reach the middle portions in the thickness direction of the first to fourth ALC panels C1 to C4, the gantry 10 is fixed to the first to fourth ALC panels C1 to C4. This is the gantry fixing process. The joint reinforcement D is located directly under the fixed base 10.

  Since the screws F1 to F4 are screwed from the top of the roof A in this way, it is not necessary to remove the ceiling interior material, the heat insulating material, and the like, and it is not necessary to perform a large-scale repair work.

  Thereafter, the rooftop waterproof sheet S is fused to the upper surface of the flange 12 of the gantry 10. At this time, since the upper surface of the flange 12 is coated with vinyl chloride, the fusing property with the rooftop waterproof sheet S is high.

  Thereafter, as shown in FIG. 9, the waterproof member 40 is attached to the gantry 10. That is, the outer surface of the columnar member 11 is covered with the waterproof member 40, and the plate-like portion 42 of the waterproof member 40 is overlaid on the upper surface of the rooftop waterproof sheet S. The plate-like portion 42 of the waterproof member 40 is fused to the upper surface of the rooftop waterproof sheet S. Thereby, the space between the waterproof member 40 and the rooftop waterproof sheet S is sealed.

  As shown in FIG. 1, the shaft of the bolt 14 protrudes upward from the upper surface of the waterproof member 40. At this time, since the outer surface of the columnar member 11 and the upper surface of the flange 12 are coated with vinyl chloride, the waterproof member 40 can be fused and high sealing performance can be obtained. Although not shown, the waterproof member 40 may be tied to the columnar member 11 with a band.

  The photovoltaic power generation module 100 is fixed to the bolts 14 of the gantry 10 fixed as described above. This is the rooftop fixture fixing process.

  As described above, according to the method for fixing the rooftop installation according to this embodiment, the screws F1 to F4 of the gantry 10 are inserted only to a depth that reaches the middle in the thickness direction of the first to fourth ALC panels C1 to C4. Therefore, the gantry 10 can be fixed to the ALC panels C1 to C4 without forming through holes in the ALC panels C1 to C4. Thereby, it becomes possible to perform construction without removing the ceiling interior material, the heat insulating material, and the like.

  Furthermore, since no through holes are formed in the ALC panels C1 to C4, a decrease in strength of the ALC panels C1 to C4 itself is prevented as compared to the conventional example.

  Moreover, the load of the photovoltaic power generation module 100 acts in a distributed manner on the first to fourth ALC panels C1 to C4.

  Therefore, it can be constructed without requiring a large-scale renovation work indoors, and further, cracking of the ALC panels C1 to C4 after installation can be prevented.

  Moreover, since the open part of the columnar member 11 of the gantry 10 is made to coincide with the corners of the four ALC panels C1 to C4, the load applied to the corners of the ALC panels C1 to C4 is reduced, and the ALC panel C1. -C4 can be made more difficult to break.

  In the above embodiment, the case where the gantry 10 is fixed so as to coincide with the corners of the first to fourth ALC panels C1 to C4 has been described. However, the present invention is not limited to this, for example, as in the modification shown in FIG. In addition, the first ALC panel C1 and the second ALC panel C2 may be fixed to the mating portion. In this modification, the open portion of the columnar member 11 of the gantry 10 is positioned at the joint between the first ALC panel C1 and the second ALC panel C2. Thereby, since the load concerning the edge part of ALC panel C1, C2 can be reduced, even if it is a case where a big load acts, ALC panel C1, C2 can be made hard to break.

  Further, the number of screw holes formed in the gantry 10 is not limited to the number described above, and can be arbitrarily set.

  Moreover, you may make it fix the mount frame 10 using fixing tools, such as a volt | bolt and a nut, other than screws F1-F4.

  As described above, the method for fixing a rooftop installation according to the present invention can be applied to, for example, fixing a rooftop installation on the roof of an existing building.

DESCRIPTION OF SYMBOLS 10 Mount 11 Columnar member 12 Flange 14 Bolt 40 Waterproof member 100 Photovoltaic power module
A Roof B1, B2 Beams C1-C4 1st-4th ALC panel D Joint reinforcement E Mortar F1-F4 Screw (fixing tool)

Claims (5)

In the fixing method of fixing the rooftop installation using the gantry to the ALC panel that constitutes the roof,
A reinforcing bar is disposed at a joint portion between the first ALC panel and the second ALC panel adjacent to the first ALC panel, the frame is disposed immediately above the reinforcing bar, and the base of the frame is connected to the first ALC panel. A pedestal fixing step of fixing to the second ALC panel using a fixture inserted to a depth reaching the middle part in the thickness direction of these panels;
A rooftop installation fixing method comprising: a rooftop installation fixing process for fixing the rooftop installation to the gantry. In the fixing method of the rooftop installation thing of Claim 1,
The gantry is provided with a hollow columnar member extending in the vertical direction, the lower end portion of the columnar member is opened, and a flange for fixing to the ALC panel is provided at the lower end portion,
In the gantry fixing step, the gantry is arranged so that the open portion of the columnar member is located at the joining portion of the first ALC panel and the second ALC panel, and the flange is fixed to both panels. Fixing method. In the fixing method of the rooftop installation thing of Claim 2,
At least four substantially rectangular ALC panels are arranged close to each other so that their corners are aligned,
In the gantry fixing step, the gantry is fixed in a state where the open portions of the columnar members of the gantry are aligned with the corners of the four ALC panels. In the fixing structure of the rooftop installation that fixes the rooftop installation using a mount to the ALC panel that constitutes the roof,
The gantry is disposed directly above the reinforcing bar disposed at the joint between the first ALC panel and the second ALC panel adjacent to the first ALC panel, and the base of the gantry is the first ALC panel and the second ALC panel. In addition, it is fixed using a fixture inserted to a depth that reaches the middle of the thickness direction of these panels,
A structure for fixing a rooftop installation object, wherein the rooftop installation object is fixed to the frame. In the fixed structure of the rooftop installation thing of Claim 4 ,
The gantry is provided with a hollow columnar member extending in the vertical direction, the lower end portion of the columnar member is opened, and a flange for fixing to the ALC panel is provided at the lower end portion,
A structure for fixing a rooftop installation, wherein the open portion of the columnar member is positioned at a joint portion between the first ALC panel and the second ALC panel, and the flange is fixed to both panels.

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