JP2014025210A - Method of constructing frame for photovoltaic power generation panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for constructing a frame for a photovoltaic power generation panel with which the frame for the photovoltaic power generation panel can be firmly fixed to an upper surface of a rooftop slab or the like while making the frame for the photovoltaic power generation panel unlikely to be blown away by winds, even without using an anchor bolt or a heavy concrete foundation.SOLUTION: A frame 20 for a photovoltaic power generation panel is constructed on the roof or the veranda of a building 100 through a tension beam construction step of constructing a tension beam member 30 while being tensioned horizontally between a pair of front and rear vertical wall parts 120 by disposing the tension beam member 30 between the pair of front and rear vertical wall parts 120 which are provided on the roof or the veranda of the building 100 with a predetermined interval disposed therebetween and by abutting a front end portion 31a of the tension beam member 30 to an inner surface of the front-side vertical wall part 120 and abutting a rear end portion 32a thereof to an inner surface of the rear-side vertical wall part 120; and a pole connection step of connecting a pole 21 in the frame 20 for the photovoltaic power generation panel to the tension beam member 30 constructed in the tension beam member construction step.

Description

  The present invention relates to a method for constructing a photovoltaic power generation panel gantry for constructing a photovoltaic power generation panel gantry supporting a photovoltaic power generation panel on a rooftop or a veranda of a building.

  As a method of constructing the photovoltaic panel gantry on the roof of a building or the like, as shown in FIG. 5, a concrete base 24 is provided at the lower end portion of the column 21 of the photovoltaic panel gantry 20, and FIG. As shown, a method of fixing the photovoltaic power generation panel mount 20 to the roof slab 110 through anchor bolts 25 and 26 embedded in the foundation 24 is common. FIG. 5 is a diagram showing a state in which the photovoltaic panel base 20 is constructed on the rooftop of the building by the conventional construction method of the photovoltaic panel base 20. FIG. 6 is an enlarged cross-sectional view of the vicinity of the lower end portion of the column 21 in the photovoltaic power generation panel mount 20 constructed on the rooftop of the building by the conventional construction method of the photovoltaic power generation panel mount 20. However, in this conventional construction method, when the anchor bolt 25 is driven, it is necessary to make a hole in the upper surface (waterproof layer) of the roof slab 110, so that rain leaks from that portion or the roof slab 110 deteriorates. There was a risk of progress.

  In addition, since it is common to fix the photovoltaic power generation panel 10 in an inclined state with respect to the photovoltaic power generation panel gantry 20 in an area with a latitude, as shown in FIG. When wind W blows from behind the panel 10, an upward lift F is generated on the photovoltaic power generation panel mount 20. For this reason, when the wind W is blown from behind, a moment load in the direction in which the rear column 21 is lifted is applied to the pedestal 20 for solar power generation panel with the point P near the lower end of the front column 21 as a fulcrum. It becomes like this. In particular, in the conventional photovoltaic panel gantry 20 that supports the photovoltaic panel 10 with a pair of front and rear columns 21, the point Q near the lower end of the column 21 on the rear side is increased by the lever principle. When the applied upward force is easily applied locally and the wind W is strengthened, as shown in FIG. 7, the lower end portion of the rear column 21 is pulled out from the roof slab 110, and the photovoltaic power generation panel gantry 20 is There was also a risk of being skipped. FIG. 7 is a diagram showing a state in which a photovoltaic power generation panel mount 20 constructed on the rooftop of a building by a conventional construction method of the photovoltaic power generation panel mount 20 is lifted by the wind.

  In order to prevent the photovoltaic power generation panel mount 20 from being lifted up even in the strong wind W in the photovoltaic power generation panel mount 20 constructed by the conventional construction method, the number of the columns 21 is increased, It is necessary to increase the weight of the foundation 24. However, when the number of the columns 21 is increased, not only the construction cost is increased, but also the number of locations where the roof slab 110 is perforated is increased, and rain leakage is more likely to occur. On the other hand, it is sometimes difficult to increase the weight of the foundation 24 due to the load resistance of the building, and there is a possibility that the labor and cost of construction increase due to the use of a large amount of concrete.

  By the way, the thing of patent documents 1-3 is proposed as a stand for photovoltaic power generation panels aiming at not to float up even if it hits by a wind until now, for example. Among these, the stand for photovoltaic power generation panels (solar cell panel support structure) in Patent Document 1 supports the photovoltaic power generation panel (solar cell panel) at a high position, thereby allowing ventilation on the lower side of the photovoltaic power generation panel. In addition to the improvement, the above object is achieved by placing a heavy object such as a concrete block on the bottom of the platform for the photovoltaic power generation panel. However, if the solar power generation panel is supported at a high position, the construction of the solar power generation panel becomes difficult, and the stability of the solar power generation panel gantry may be lowered, which may make it easier to fall. In addition, as described above, it may be difficult to place heavy objects such as concrete blocks due to building load resistance, etc., and the amount of construction work and costs may increase as much concrete is used. There is also.

  Further, the photovoltaic panel pedestal (solar cell pedestal) of the cited document 2 is provided with a protective plate so as to cover the outer peripheral portion between the support columns (leg portions) that support the photovoltaic power generation panel (solar cell panel). The above-mentioned purpose is achieved by preventing wind from entering the lower side of the photovoltaic power generation panel. However, the photovoltaic power generation panel pedestal of Patent Document 2 has a structure that is unlikely to generate upward lift, but has a structure that easily receives wind from the side. For this reason, in the photovoltaic power generation panel mount of Cited Document 2, another measure such as increasing the number of columns or increasing the weight thereof must be taken, and the above-described problem occurs. In addition, there is a problem that the cost increases as the protective plate is used.

  In addition, the photovoltaic panel pedestal (photovoltaic power generation device) of the cited document 3 has a slope opposite to the photovoltaic power generation panel on the lower side of the photovoltaic power generation panel (solar cell panel) arranged behind. By providing a wind pressure reaction force plate and providing a slot hole for wind passage on the upper end side of the wind pressure reaction force plate, by reducing the lift generated in the photovoltaic power generation panel mount when the wind blows from behind, The above objective is achieved. However, in the photovoltaic panel pedestal of Cited Reference 3, when trying to prevent lifting when wind blows from the rear, slot holes (the upper edge and the rear edge of the photovoltaic panel arranged at the front are arranged). It is necessary to secure a wide gap between the lower edge of the photovoltaic power generation panel and the photovoltaic power generation panel cannot be arranged efficiently. In addition, the photovoltaic panel pedestal of Patent Document 3 has a structure in which a moment load that lifts the front side is easily applied when the wind blows from the front, and the structure tends to fall backward. For this reason, in the photovoltaic power generation panel mount of Cited Document 3, another measure such as increasing the number of columns or increasing the weight thereof must be taken, and the above-described problem occurs.

JP 2012-054443 A Japanese Patent Laid-Open No. 08-274364 JP 2011-082273 A

  The present invention has been made to solve the above-described problems, and is a case where a strong wind (particularly a strong wind from the rear) is received without using an anchor bolt or a heavy concrete foundation. In addition, the present invention provides a method for constructing a photovoltaic panel gantry that can firmly fix the photovoltaic panel gantry to the construction surface in a state in which the rear side is not easily lifted and blown off by the wind. It is another object of the present invention to provide a method for constructing a solar power panel gantry that is easy to construct, can shorten the construction period, and can reduce construction costs.

The above issues
A method for constructing a photovoltaic panel gantry for constructing a photovoltaic panel gantry for supporting a photovoltaic panel on a rooftop or veranda of a building,
A strut beam is placed between a pair of front and rear vertical walls provided at a predetermined interval on the rooftop or veranda of the building, and the front end of the strut beam is on the inner surface (rear-facing surface) of the front vertical wall. By abutting and bringing the rear end portion of the strut beam material into contact with the inner surface (forward facing surface) of the rear vertical wall portion, the strut beam material was stretched horizontally between the pair of front and rear vertical wall portions. Strut beam material construction process to construct in the state,
Providing a method for constructing a photovoltaic panel gantry characterized by undergoing a column coupling step for coupling a column in a photovoltaic panel gantry to a column beam constructed in a tension beam material construction step. Solved by.

  Here, in “a pair of front and rear vertical wall portions”, “front end portion of a tension beam material”, “front vertical wall portion”, “rear end portion of a tension beam material” or “rear vertical wall portion”, etc. The phrases “front” or “rear” are defined with reference to the orientation of the solar panel mount. That is, the photovoltaic panel gantry has a structure in which one side is lower and the other is higher in order to support the solar smoke generating panel in an inclined state, but the lower level in the photovoltaic panel gantry is lower. The side is “front” and the higher side is “back”. In consideration of the power generation efficiency of the photovoltaic power generation panel, in the northern hemisphere, it is preferable to construct the solar power panel gantry so that the front side is on the south side (construction facing south). It is not limited to the case where the photovoltaic panel base is constructed in the south direction, and may be constructed in another direction. This is because it may be difficult to construct the solar panel stand in the south direction due to the effects of the direction in which the building is built and the surrounding environment of the building.

  The construction method of the present invention does not fix the photovoltaic power generation panel gantry by fixing the lower end of the column in the photovoltaic power generation panel gantry to the construction surface (such as the upper surface of the roof slab). A stand for a photovoltaic power generation panel by fixing a column to a stretched beam member fixed in a stretched state between a pair of front and rear vertical wall portions (parapets, etc.) provided at a predetermined interval on the rooftop of the building Is to be fixed. For this reason, even if it does not use an anchor bolt, since the stand for photovoltaic power generation panels can be fixed with respect to a construction surface and it is not necessary to make a hole in a construction surface, generation | occurrence | production of a rain leak can be prevented. . In addition, for the moment load with the fulcrum near the lower end of the front strut that is generated when the wind blows from the back of the solar panel gantry after construction, it is possible to Since it is possible to resist, it is possible to prevent the rear side of the photovoltaic power generation panel stand from being lifted. Therefore, it is possible to make it difficult for the photovoltaic power generation panel mount to be blown off by the wind. Furthermore, since it is not necessary to use a heavy concrete foundation or the like, it is possible to construct a photovoltaic power generation panel mount on a rooftop or a veranda of a building that does not have a sufficient load resistance. Furthermore, since the construction is easy, it is possible to shorten the construction period and greatly reduce the construction cost. Depending on conditions, it is possible to shorten or reduce the work period and construction cost to about one-tenth compared with the conventional construction method using a concrete foundation.

  In the construction method of the present invention, the specific structure of the strut beam material is not particularly limited as long as it can be fixed in a stretched state between the pair of front and rear vertical wall portions, but the front end portion is the front vertical portion. Between the first beam member and the second beam member, the first beam member that contacts the inner surface of the wall portion, the second beam member whose rear end portion contacts the inner surface of the rear vertical wall portion, and It is preferable to use a stretched beam member extending means for extending the stretched beam material by moving the first beam material and the second beam material in the direction of moving back and forth relatively. Thereby, according to the space | interval of a pair of front-and-back vertical wall part, it becomes possible to adjust the whole length of a tension beam material easily in a construction site. Therefore, it becomes possible to employ the construction method of the present invention under various construction conditions.

  Further, in the construction method of the present invention, if the stretching beam material extending means can move the first beam material and the second beam material in the direction of moving back and forth relatively, the specific structure thereof. Is not particularly limited. Examples of the stretching beam member extending means include a screw mechanism, a gear mechanism, a fluid pressure mechanism (hydraulic mechanism, etc.), a mechanism that combines these, or a mechanism that combines these and a link mechanism. For example, the tension beam member extending means adopting the screw mechanism is arranged coaxially with respect to the first beam member and the second beam member, and the front end portion thereof is screwed to the rear end portion of the first beam member. The rear end is screwed or fixed to the front end of the second beam member, or the front end is fixed to the rear end of the first beam member and the rear end is fixed to the second beam. A screw member screwed to the front end of the member, and an operation member for rotating the screw member around its axis, and by rotating the screw member with the operation member, the first beam The thing of the mechanism by which a material or a 2nd beam material is sent out from a screw member is mentioned. In addition, as a tension beam member extending means using a gear mechanism, a ratchet fixed to the rear end portion of the first beam member or the front end portion of the second beam member, a gear meshed with the ratchet, and the gear are rotated. The thing provided with the operation member for operating and the lock member for forming rotation of a gearwheel is illustrated. Further, as a tension beam member using a fluid pressure mechanism, a hydraulic cylinder that connects the rear end portion of the first beam member and the front end portion of the second beam member coaxially with the first beam member and the second beam member. And an operation member for operating the hydraulic cylinder. These mechanisms can be combined as appropriate. Further, examples of those mechanisms combined with a link mechanism include a screw jack and a hydraulic jack.

  Furthermore, in the construction method of the present invention, the fixing method of the lower end portion of the support column in the photovoltaic power generation panel mount with respect to the construction surface (the roof top surface of the building or the top surface of the veranda) is not particularly limited, but prevents rain leakage as described above. In order to do this, it is preferable to carry out without making a hole in the top surface of the building or the top surface of the veranda (construction surface). In the construction method of the present invention, since the strut beam material mainly contributes to the fixing of the photovoltaic power generation panel gantry, the lower end portion of the column in the photovoltaic power generation panel gantry needs to be particularly fixed to the construction surface. There is no. However, in consideration of fixing the photovoltaic power generation panel mount more firmly to the construction surface, it is preferable to fix the lower end of the column in the photovoltaic power generation panel mount to the construction surface using an adhesive. . Similarly, in the construction method of the present invention, there is also a method for fixing the front end portion of the strut beam material to the inner surface of the front vertical wall portion and / or fixing the rear end portion of the strut beam material to the inner surface of the rear vertical wall portion. Although not particularly limited, it is preferable to use an adhesive. However, the front and rear ends of the tension beam are not rooftop slabs that have an effect on building leaks, but are fixed to vertical walls that do not directly affect building leaks. Therefore, bolts or the like may be used as necessary.

  By the way, in the construction method of this invention, a parapet, a cage | basket, an outer wall, etc. are illustrated as a pair of front-and-back vertical wall part provided at predetermined intervals on the rooftop or veranda of the building. The pair of front and rear vertical wall portions are required to have a strength capable of withstanding the tension force of the tension beam material. On the roofs and verandas of reinforced concrete buildings (buildings, etc.), reinforced concrete parapets are usually provided. Parapets are excellent in strength because of their low height and thickness. For this reason, as a pair of front and rear vertical wall portions, parapets provided on the rooftop or veranda of the building can be suitably used.

  As described above, according to the present invention, even if a strong wind (especially a strong wind from the rear) is received without using an anchor bolt or a heavy concrete foundation, the rear side is difficult to lift and fly into the wind. It is possible to provide a method for constructing a solar power panel gantry that can firmly fix the solar power panel gantry to the construction surface in a state that is difficult to be performed. In addition, it is possible to provide a method for constructing a solar power panel gantry that is easy to construct, can shorten the construction period, and can reduce construction costs.

It is the figure which showed the state which constructed the mount for solar power generation panels on the rooftop of a building with the construction method of the mount for solar power generation panels of this invention. It is the figure which showed the state which constructed the photovoltaic power generation panel mount on the rooftop of a building with the construction method of the photovoltaic power generation panel mount of other embodiments in the present invention. It is the figure which showed the state which constructed the photovoltaic power generation panel mount on the rooftop of a building with the construction method of the photovoltaic power generation panel mount of another embodiment in the present invention. It is the top view which showed the example which distribute | arranged the beam material for tension | pulling other than the front-back direction in the construction method of the stand for photovoltaic power generation panels of this invention. It is the figure which showed the state which constructed the mount for solar power generation panels on the rooftop of a building with the construction method of the conventional stand for solar power generation panels. It is sectional drawing which expanded the lower end part periphery of the support | pillar in the photovoltaic power generation panel mount constructed | assembled on the rooftop of the building with the construction method of the conventional photovoltaic power generation panel mount. It is the figure which showed the state which the roof for photovoltaic power generation panels constructed | assembled on the rooftop of the building by the construction method of the conventional photovoltaic power generation panel mounts was lifted by the wind.

1. Outline of Construction Method for Solar Power Panel Pedestal of the Present Invention Hereinafter, a preferred embodiment of the method for constructing a solar power panel gantry of the present invention will be described more specifically with reference to the drawings. FIG. 1 is a view showing a state in which a photovoltaic panel gantry 20 is constructed on the rooftop of a building 100 by the construction method of the photovoltaic panel gantry 20 of the present invention. As shown in FIG. 1, the construction method of the present embodiment includes a photovoltaic power panel mounting step for installing a solar power panel mounting 20 on the top surface of a roof slab 110 of the building 100, and a rooftop of the building 100. A strut beam member construction step in which a strut beam member 30 is arranged between a pair of vertical wall portions 120 provided at a predetermined interval in front of and behind the slab 110, and a photovoltaic power generation panel mount 20 for the strut beam member 30. The solar power generation panel gantry 20 is constructed on the roof of the building 100 by passing through the column coupling step of coupling the column 21 in the column. Here, a case where the solar panel 20 is constructed in the south direction will be described. Therefore, in FIG. 1 and FIGS. 2 and 3 described later, the left side of the drawing is the south side (front side), and the right side of the drawing is the north side (rear side).

  Moreover, although the building 100 which constructs the photovoltaic power generation panel mount 20 by the construction method of the present invention is usually a reinforced concrete building, it may be a building having another structure. That is, if the pair of front and rear vertical wall portions 120 are provided, the construction method of the present invention can be applied to a wooden or lightweight steel structure. However, considering the strength of the building 100 and the like, the building 100 is preferably made of reinforced concrete. In addition, even if the pair of front and rear vertical wall portions 120 are not provided in advance in the building 100, the pair of front and rear vertical wall portions 120 are provided in the building 100 before performing the tension beam construction process. Therefore, the construction method of the present invention can be adopted. However, considering that the construction is easily performed using the vertical wall portion 120 originally provided in the building 100, the building 100 in which the pair of front and rear vertical wall portions 120 are provided in advance is preferable. In the construction method of the present embodiment, the building 100 is a reinforced concrete building, and the pair of vertical wall portions 120 are parapets provided on the roof of the building. Therefore, in the following description, “building” is described as “building”, and “vertical wall” is described as “parapet”.

2. The solar panel mounting step The solar panel mounting step is a step of installing the solar panel 20 on the top surface of the roof slab 110 of the building 100 as shown in FIG. . In the construction method of the present embodiment, the solar power generation panel gantry installation process is described, and then the following beam beam construction process is performed. However, the reverse order may be used. As long as the photovoltaic power generation panel mount 20 can support the photovoltaic power generation panel 10, the specific structure thereof is not particularly limited. In the construction method of this embodiment, the photovoltaic power generation panel gantry 20 includes a plurality of support columns 21 arranged at a predetermined interval in the front-rear direction, and a frame fixed in an inclined state with respect to the upper end portion of the support columns 21. 22 and struts 21 and struts 21 or struts 23 connecting struts 21 and frames 22 in an oblique direction. Since this solar power generation panel gantry 20 does not have anything that blocks the plate-like wind below the portion that supports the solar power generation panel 10, it has a structure that is less susceptible to wind resistance. The lower end portion of each column 21 is fixed to the upper surface of the roof slab 110 using an adhesive without using an anchor bolt or the like (A portion in FIG. 1). For this reason, a hole cannot be made in the roof slab 110, and the building 100 is less likely to leak.

  Thus, since the construction method of the present invention does not need to make a hole in the roof slab 110 when the lower end portion of the column 21 in the photovoltaic panel gantry 20 is fixed to the roof slab 110, In comparison, even if the number of the columns 21 is increased, no rain leak occurs. For this reason, the construction method of this invention can increase the number of the support | pillar 21 compared with the conventional construction method. Therefore, the load applied to the roof slab 110 from the photovoltaic panel pedestal 20 is dispersed, and the fixing points of the photovoltaic panel pedestal 20 and the roof slab 110 (bonding points between the support column 21 and the roof slab 110) are many. Thus, it is possible to prevent the photovoltaic power generation panel mount 20 from being blown even when receiving a stronger wind. In the construction method of this embodiment, the support columns 21 are provided at the front, middle, and rear portions of the photovoltaic power generation panel mount 20.

3. As shown in FIG. 1, the strut beam material construction process includes a strut beam material 30 disposed between a pair of front and rear parapets 120, and the front end portion 31 a of the strut beam material 30 is an inner surface of the front parapet 120. (The rearward facing surface) is brought into contact with the rear end portion of the bracing beam member 30 against the inner surface (front facing surface) of the rear parapet 120, so that the strut beam member 30 is placed between the pair of front and rear parapets 120. It is a process of construction in a state stretched horizontally. As long as the strut beam 30 can be fixed in a stretched state between the pair of front and rear parapets 120 as described above, the specific structure is not particularly limited. In the construction method of the present embodiment, the strut beam 30 has a first beam member 31 whose front end portion 31a is in contact with the inner surface of the front parapet 120, and a rear end portion 32a thereof on the inner surface of the rear parapet 120. The second beam member 32 is in contact with the first beam member 31 and the stretched beam member extending means 33 interposed between the first beam member 32 and the second beam member 32. As the first beam member 31 and the second beam member 32, a metal pipe, angle steel, or the like is usually used. The tension beam member extending means 33 may be provided in any section of the tension beam member 33. In the example of FIG. 1, the stretched beam material extending means 33 is provided at a position below the photovoltaic power generation panel mount 20, but the photovoltaic power generation panel mount 20 interferes with the operation of the stretched beam material extending means 33. In such a case, as shown in FIG. 2, the rear end portion (or the front end portion) of the strut beam 30 may be provided in a section that is not below the photovoltaic power generation panel mount 20. FIG. 2 is a view showing a state in which the photovoltaic panel gantry 20 is constructed on the roof of the building 100 by the construction method of the photovoltaic panel gantry 20 according to another embodiment of the present invention. In FIG. 2, the second beam member 32 is formed of only the base plate.

  Further, as described above, the extension beam member extending means 33 in the extension beam member 30 can move the first beam member 31 and the second beam member 32 in the direction of moving back and forth relatively. The specific structure is not particularly limited. In the construction method of this embodiment, the stretched beam member extending means 33 is arranged coaxially with respect to the first beam member 31 and the second beam member 32, and the front end portion thereof is relative to the rear end portion of the first beam member 31. And a screw member having a rear end portion fixed to the front end portion of the second beam member 32 and an operation member for rotating the screw member around its axis. ing. The tension beam members 30 are arranged in the gap in a state where the total length is slightly shorter than the gap between the pair of front and rear parapets 120, and then the first beam material 31 and the second beam material are operated by operating the tension beam material extending means 33. 32 is moved in a direction (in the direction of arrow D in FIG. 1) that is relatively separated from the front and back to extend the stretched beam member 30, and is constructed so as to be stretched in the gap.

  In the construction method of this embodiment, the front end portion 31a of the first beam member 31 and the rear end portion 32a of the second beam member 32 are fixed to the parapet 120 using an adhesive (B portion in FIG. 1). A flange (base plate) is provided at the front end portion 31a of the first beam member 31 and the rear end portion 32a of the second beam member 32, and the first beam member 31, the second beam member 32 and the parapet 120 are in contact with each other. The area can be increased, and the tension applied to the parapet 120 from the first beam member 31 and the second beam member 32 can be dispersed. Thereby, deformation and breakage of the parapet 120 can be prevented. Moreover, since the adhesion area of the 1st beam material 31 and the 2nd beam material 32, and the parapet 120 can also be ensured widely, the front-end part 31a of the 1st beam material 31 and the rear-end part 32a of the 2nd beam material 32 are used. It is also possible to fix the parapet 20 more firmly. Further, the flanges provided at the front end portion 31a of the first beam member 31 and the rear end portion 32a of the second beam member 32 use bolts or the like for the front end portion 31a of the first beam member 31 and the second beam member 32. When the rear end portion 32a is fixed to the parapet 120, it can be used as a portion into which the bolt is driven.

  What is necessary is just to construct at least one tension beam material 30 with respect to the stand 20 for photovoltaic power generation panels. However, if the construction number of the tension beam members 30 is small, the photovoltaic power generation panel mount 20 after construction resists the moment load generated with the vicinity of the lower end portion of the front column 21 as a fulcrum when receiving strong wind from the rear. There is a risk that it will not be possible. For this reason, it is preferable to provide a plurality of tension beam members 30 at intervals of 15 m or less. More preferably, the interval between the tension beam members 30 is 10 m or less. On the other hand, if the interval between the tension beam members 30 is too small, the number of the tension beam members 30 to be used increases, the construction effort increases, the construction period becomes longer, and the construction cost may increase. For this reason, it is preferable that the interval between the tension beam members 30 is 1 m or more. The interval between the tension beam members 30 is more preferably 2 m or more, and further preferably 3 m or more. The interval between the tension beam members 30 may be appropriately determined by obtaining the necessary tension force from the assumed wind pressure by structural calculation.

  Further, the height (the height from the upper surface of the roof slab 110 to the central axis of the tension beam member 30; the same applies hereinafter) for supporting the tension beam member 30 is equal to the length of the tension beam member 30 (of the pair of front and rear parapets 120). The distance is not particularly limited. However, the moment that the supporting beam member 30 is supported at a certain high position is generated when the solar power panel 20 after construction is subjected to strong wind from the rear and the vicinity of the lower end of the front column 21 as a fulcrum. It becomes easy to resist the load. For this reason, the height which supports the tension beam material 30 is normally 5 cm or more. The height for supporting the tension beam member 30 is preferably 10 cm or more, more preferably 15 cm or more, and further preferably 20 cm or more. There is no upper limit to the height at which the tension beam member 30 is supported as long as it is within the range that can be supported by the parapet 120, or within the range that can be connected to the column 21 of the photovoltaic power generation panel gantry 120.

4). As shown in FIG. 1, the strut connection step connects the struts 21 in the solar panel 20 to the strut beam material 30 constructed in the strut beam material construction step (at C part in FIG. 1). Connected). A method for connecting the column 21 to the strut beam 30 is not particularly limited. Examples of the method of connecting the support column 21 to the strut beam 30 include bolting and welding. The strut beam 30 may be connected to any of the columns 21 arranged in the front-rear direction of the photovoltaic power generation panel mount 20, but is preferably connected to all the columns 21 arranged in the front-rear direction. As a result, the post-construction photovoltaic power generation panel mount 20 can be made stronger against wind, and the stability of the tension beam member 30 can be improved, so that the tension beam member 30 is a pair of front and rear parapets. It is also possible to easily maintain a state of being always stretched between 120.

  In this way, by connecting the support column 21 to the strut beam member 30 supported in a state of being stretched in the horizontal direction between the pair of front and rear parapets 120, it is possible to avoid using a heavy concrete foundation or the like. The post-construction photovoltaic panel base 20 can be made sufficiently strong against wind. Moreover, since it is only necessary to construct the tension beam member 30 between the pair of front and rear parapets 120 and connect the support column 21 thereto, the construction is easy, the construction period can be shortened, and the construction cost can be reduced. .

  FIG. 3 is a view showing a state in which the photovoltaic panel gantry 20 is constructed on the roof of the building 100 by the construction method of the photovoltaic panel gantry 20 according to still another embodiment of the present invention. 3 does not have a front column 21 that supports the front portion of the frame 22, and only the column 21 that supports the middle portion of the frame 22 and the column 21 that supports the rear portion of the frame 22. Is present. The front portion of the frame 22 is connected to the tension beam member 30 instead of being supported by the column 21. The connection between the frame 22 and the tension beam member 30 can employ the same method as the connection between the support column 21 and the tension beam member 30. About the other structure in the construction method of the photovoltaic power generation panel mount 20 shown in FIG. 3, since it is the same as the configuration adopted in the construction method of the photovoltaic power generation panel mount 20 shown in FIG. 1 and FIG. I will omit the explanation. The construction method of the present invention can appropriately remove the support column 21 as described above.

5. After construction, when the wind blows from behind the photovoltaic panel pedestal 20, the wind hits the lower surface of the photovoltaic panel 10, and the photovoltaic panel pedestal 20 A moment load is applied in such a direction that the rear side of the solar panel 20 is lifted with the vicinity of the lower end of the front column 21 as a fulcrum. However, the photovoltaic power generation panel gantry 20 constructed by the construction method of the present invention is connected to the strut beam 30 supported in the horizontal direction between the pair of front and rear parapets 120, and the moment load is When applied, a reaction force is applied backward from the front end portion 31a of the strut beam 30. In addition, the strut beam 30 is stretched in the gap between the pair of front and rear parapets 120 so that it does not fall out of the gap. For this reason, even if it receives such a wind, the stand 20 for photovoltaic power generation panels does not lift the back side, and can keep the state which remained in the original position.

  Further, when wind blows from the front of the solar panel 20 after construction, the wind hits the upper surface of the solar panel 10 and is held down by the solar panel 20. Power is applied to the direction of attachment. For this reason, even if it is a case where a wind blows from the front, the base 20 for photovoltaic power generation panels does not float up. Furthermore, when wind blows from the side of the solar power panel 20 after the construction, the wind passes through the lower side of the solar power panel 10 as it is. No lift is generated on the gantry 20. For this reason, even if it is a case where a wind blows from the side, the base 20 for photovoltaic power generation panels does not float up. In this way, the photovoltaic power generation panel gantry constructed by the construction method of the present invention is not only raised against the wind from the rear, but also lifted from the wind from any direction, on the construction surface It can be kept in a fixed state. In the construction method of the present embodiment, the tension beam members 30 are provided only in the front-rear direction of the photovoltaic power generation panel gantry 20, but if necessary, as shown in FIG. You may provide in the left-right direction. FIG. 4 is a plan view showing an example in which the stretching beam members 30 are arranged in the construction method of the photovoltaic power generation panel gantry 20 of the present invention in addition to the front-rear direction. Thereby, even if it receives a strong wind from the side or the twist direction, it is possible to further increase the wind pressure resistance of the photovoltaic power generation panel gantry 20 after construction by making the photovoltaic power panel gantry 20 less likely to lift.

DESCRIPTION OF SYMBOLS 10 Photovoltaic power generation panel 20 Photovoltaic power generation panel mount 21 Strut 22 Frame 23 Bracing 24 Foundation 25 Anchor bolt 26 Anchor bolt 30 Strut beam material 31 First beam material 31a Front end portion 32 Second beam material 32a Rear end portion 33 Strut Beam extension means 100 Building (Building)
110 Roof slab 120 Parapet (vertical wall)

Claims (7)

A method for constructing a photovoltaic panel gantry for constructing a photovoltaic panel gantry for supporting a photovoltaic panel on a rooftop or veranda of a building,
A tension beam member is arranged between a pair of front and rear vertical wall portions provided at a predetermined interval on the roof or veranda of the building, and the front end portion of the tension beam member is brought into contact with the inner surface of the front vertical wall portion. The strut beam material is constructed in such a manner that the strut beam material is stretched in the horizontal direction between the pair of front and rear vertical wall portions by bringing the rear end portion of the strut beam material into contact with the inner surface of the rear vertical wall portion. Process,
A method for constructing a solar power panel gantry comprising a strut coupling step of coupling a strut in a solar power panel cradle to a strut beam material constructed in a tension beam material construction process. As a strut beam material,
A first beam member whose front end is in contact with the inner surface of the front vertical wall,
A second beam member whose rear end is in contact with the inner surface of the rear vertical wall,
Stretched beam material extending means that is interposed between the first beam material and the second beam material, and moves the first beam material and the second beam material in a direction away from each other relatively back and forth to extend the stretched beam material. The construction method of the stand for photovoltaic power generation panels of Claim 1 using what was comprised by this.   3. The photovoltaic panel pedestal according to claim 2, wherein the tension beam member extending means includes a screw mechanism, a gear mechanism, a fluid pressure mechanism, a mechanism in which these are combined, or a mechanism in which these are combined with a link mechanism. Construction method.   The solar light according to any one of claims 1 to 3, wherein fixing of the lower end portion of the column in the photovoltaic panel gantry to the roof top surface or the veranda top surface of the building is performed without making a hole in the roof top surface or the veranda top surface of the building. Construction method for power generation panel mount.   The method for constructing a photovoltaic power generation panel pedestal according to claim 4, wherein fixing of the lower end portion of the column in the photovoltaic power generation panel gantry to the roof top surface or the veranda top surface of the building is performed using an adhesive.   The fixing of the front end portion of the tension beam material to the inner surface of the front vertical wall portion and / or the fixing of the rear end portion of the tension beam material to the inner surface of the rear vertical wall portion is performed using an adhesive. 5. The construction method of the mount for photovoltaic power generation panels in any one of 5.   The construction method for a solar power generation panel gantry according to any one of claims 1 to 6, wherein the pair of front and rear vertical wall portions are parapets provided on a rooftop or a veranda of a building.

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