High-durability impervious photovoltaic structure integrated roof and construction method

Abstract

The invention relates to a high-durability impervious photovoltaic structure integrated roof and a construction method. The integrated roof comprises a plurality of solar photovoltaic modules, and transverse drainage grooves are formed in the two longitudinal sides of each solar photovoltaic module; longitudinal drainage grooves are formed in the two transverse sides of each solar photovoltaic assembly, and the multiple solar photovoltaic assemblies are fixed to the longitudinal drainage grooves through the multiple pressing blocks. The solar photovoltaic modules are fixedly connected with the profiled corrugated steel plates of the roof through the supporting columns, so that the high-durability anti-seepage photovoltaic structure and the roof structure are integrally formed, the overall performance of the structure is good, and the possible hidden danger of leakage is solved; in addition, the use of the profiled corrugated steel plate not only can realize the template-free construction process, but also the flexible and light profiled corrugated steel plate can effectively absorb the shrinkage and creep of the ECC material, and the weight of the roof structure is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic systems, and in particular to a highly durable and anti-seepage photovoltaic structure integrated roof and a construction method thereof. Background Art

[0002] At present, photovoltaic power generation is gradually emerging in various buildings. Photovoltaic power generation system refers to a power generation system that directly converts light energy into electrical energy without going through a thermal process. Most of the existing photovoltaic power generation uses photovoltaic panels attached to the surface or top of the building to receive sunlight to achieve the effect of photovoltaic power generation. The current practice is mostly to install photovoltaic panels on the surface of the built building for the second time. This practice not only fails to reduce the construction period and cost, but also the installation of photovoltaic panel foundations is likely to damage the insulation and waterproof structure of the original building roof. Rainwater is very likely to leak to the ceiling through the drilling holes, causing cracks in the wall, rain leakage in the house, indoor mold, etc., affecting the durability of the structure, and even causing serious safety accidents. In recent years, roof leakage of buildings is one of the most strongly reflected problems in the construction of houses. In addition, the waterproof warranty period is relatively long. Once leakage occurs, all structural layers of the roof must be dug up, and the workload of repair is huge, resulting in a large amount of waste of materials and human resources, and increasing the full life cycle cost of the structure.

[0003] For example, the Chinese utility model patent with authorization announcement number CN 208310017 U discloses a new type of combined roof photovoltaic system and its water guide plate, including: a downslope air tower arranged along the downslope direction, a number of photovoltaic sub-assemblies and a water guide structure; the water guide structure includes a longitudinal water guide plate extending along the downslope direction, and a transverse water guide plate extending along a first direction, the first direction being perpendicular to the downslope direction; the photovoltaic panel of the photovoltaic sub-assembly is arranged on the first supporting part of the two adjacent longitudinal water guide plates; the transverse water guide plate is arranged below the contact point of the two adjacent photovoltaic panels, and the transverse water guide plate is connected to the longitudinal water guide plate; the downslope air tower is arranged on the side of the photovoltaic sub-assembly. The photovoltaic system of this utility model ensures a good living environment, reduces user energy consumption, and thus improves the BIPV user experience. However, the photovoltaic system is designed separately from the roof structure, the structure is relatively complex, and the manufacturing and installation costs are relatively high. Summary of the invention

[0004] In order to solve the above-mentioned technical defects existing in the prior art, the purpose of the present invention is to provide a highly durable and anti-seepage photovoltaic structure integrated roof and construction method, so as to improve the unfavorable factors of traditional construction methods, solve possible leakage risks, improve the durability of the structure, and reduce subsequent maintenance costs.

[0005] In order to solve the above technical problems, the solution adopted by the present invention is as follows: The first aspect of the present invention provides a high-durability and anti-seepage photovoltaic structure integrated roof, which includes a plurality of solar photovoltaic modules, and transverse drainage grooves are provided on both longitudinal sides of the solar photovoltaic modules; longitudinal drainage grooves are provided on both lateral sides of the solar photovoltaic modules, and the plurality of solar photovoltaic modules are fixed on the longitudinal drainage grooves by a plurality of pressing blocks; the plurality of solar photovoltaic modules are fixedly connected to the corrugated steel sheets on the roof by a plurality of pillars, so that the high-durability and anti-seepage photovoltaic structure and the roof structure are integrally formed, the overall structural performance is good, and the possible leakage risk is solved; in addition, the use of corrugated steel sheets can not only realize the template-free construction process, but also the flexible and lightweight corrugated steel sheets can effectively absorb the shrinkage creep of ECC materials and reduce the weight of the roof structure.

[0006] Preferably, the corrugated steel sheet is a corrugated steel sheet with multiple convex and concave surfaces evenly distributed; the width of the corrugated steel sheet is 700-950 mm, the wave pitch is 46-135 mm, the wave height is 14-21 mm, and the thickness is 0.75-1.2 mm; long screws are preset on the multiple convex surfaces; shear connectors are welded on the multiple concave surfaces, and the spacing between two adjacent shear connectors is 400-600 mm; the bottom of the pillar is welded to the bottom plate, and bolt holes are opened on the bottom plate. The long screws cooperate with the bolt holes on the bottom plate, and finally a tight connection is achieved by screwing in the corresponding nuts, thereby connecting the entire high-durability and anti-permeability photovoltaic structure to the roof. The setting of the shear connector increases the bonding between the corrugated steel sheet and the ECC material layer and is not connected to the photovoltaic structure.

[0007] In any of the above schemes, it is preferred that a structural layer is laid on the corrugated steel plate, and the structural layer is equipped with a bidirectional force-bearing steel mesh; a 75 mm thick extruded polystyrene insulation layer is laid on the top of the structural layer; a layer of dry-laid tarpaulin is provided on the top of the extruded polystyrene insulation layer; a 20 mm thick fine stone concrete layer is laid on the dry-laid tarpaulin; and a bidirectional structural steel mesh is provided in the fine stone concrete layer.

[0008] In any of the above schemes, it is preferred that the long screw rod penetrates the structural layer, the extruded polystyrene board insulation layer, the dry-laid linoleum felt and the fine stone concrete layer; and the top of the long screw rod exceeds the upper surface of the fine stone concrete layer by 2-3 cm.

[0009] In any of the above schemes, preferably, the thickness of the structural layer is 40-60 mm; and the structural layer is made of high-ductility fiber-reinforced cement-based composite material ECC.

[0010] In any of the above schemes, preferably, steel beams are welded between the plurality of pillars, thereby increasing the stability of the entire photovoltaic structure; and brackets are provided between the pillars and the solar photovoltaic components.

[0011] In any of the above schemes, it is preferred that the longitudinal drainage groove is fixedly connected to the bracket by bolts, U-shaped channel steels are welded at both ends of the bracket, and the main drainage groove is welded on the U-shaped channel steel; the transverse drainage groove is welded to the longitudinal drainage groove.

[0012] In any of the above schemes, it is preferred that the height of the main drainage groove is lower than that of the longitudinal drainage groove, so that rainwater from the longitudinal drainage groove and the transverse drainage groove can be smoothly collected into the main drainage groove.

[0013] In any of the above schemes, it is preferred that the longitudinal drainage grooves are located below the lateral sides of the solar photovoltaic components, so that rainwater on the photovoltaic panels can flow smoothly into the longitudinal drainage grooves.

[0014] The second aspect of the present invention provides a construction method of a highly durable and anti-seepage photovoltaic structure integrated roof, which sequentially performs the following steps: Step 1: Lay the corrugated steel sheet on the roof according to the design drawings, and then weld the long screws and shear connectors on the corrugated steel sheet; Step 2: After installing the corrugated steel plate, lay the bidirectional force-bearing steel mesh, pour the structural layer, vibrate and compact it, and cover the membrane for maintenance; Step 3: After the structural layer is hardened and formed, lay the extruded polystyrene board insulation layer, then lay the dry-laid tarpaulin, and finally lay the two-way structural steel mesh, and pour the fine stone concrete, vibrate and compact it, smooth and calender it, and cover it with film for maintenance; Step 4: After the fine stone concrete layer is formed, install several pillars, match the bolt holes on the bottom plate of the pillars with the reserved long screws and insert them, and screw in the corresponding nuts; Step 5: Weld the bracket and steel beam to the pillar, then weld the longitudinal drainage groove to the bracket, and weld the transverse drainage groove to the longitudinal drainage groove; Step 6: Fix the solar photovoltaic module on the longitudinal drainage groove through several pressing blocks, finally weld the U-shaped channel steel to the end of the bracket, weld the main drainage groove to the U-shaped channel steel, and the entire photovoltaic structure integrated roof is completed.

[0015] In summary, the high-durability and anti-seepage photovoltaic structure integrated roof of the present invention has the following advantages: the entire photovoltaic structure and the roof structure are integrally formed, the overall performance of the structure is good, and the possible leakage risk is solved; the high-ductility fiber-reinforced cement-based ECC material has good crack control ability, and its resistance to chloride ion penetration and water seepage is far superior to ordinary concrete. It can be applied to the waterproof layer and can be closely combined with the cement-based structural layer, which significantly improves the durability of the structure; the use of corrugated steel plates can not only realize the template-free construction process, but also the flexible and lightweight corrugated steel plates can effectively absorb the shrinkage creep of the ECC material and reduce the weight of the roof structure, which has significant advantages; in addition, the entire structure has a simple operation process, convenient assembly, short construction time, less frequency of later maintenance, and significant economic effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of a preferred embodiment of a highly durable and anti-seepage photovoltaic structure integrated roof according to the present invention.

[0017] Description of Figure Numbers: Corrugated steel plate 1, structural layer 2, extruded polystyrene insulation layer 3, dry-laid tarpaulin 4, fine stone concrete layer 5, long screw 6, shear connector 7, base plate 8, support 10, bracket 11, steel beam 12, longitudinal drainage trough 15, transverse drainage trough 16, U-shaped channel steel 17, main drainage trough 18, solar photovoltaic module 19, briquette 20, bidirectional force-bearing steel mesh 30, bidirectional structural steel mesh 31. DETAILED DESCRIPTION

[0018] The following description is merely exemplary in nature and is not intended to limit the disclosure, application or use. The specific implementation of the highly durable and impermeable photovoltaic structure integrated roof and construction method of the present invention will be further described below in conjunction with the accompanying drawings.

[0019] like Figure 1As shown, a schematic diagram of the structure of a preferred embodiment of a high-durability and anti-seepage photovoltaic structure integrated roof according to the present invention. The high-durability and anti-seepage photovoltaic structure integrated roof of the present invention is a high-durability and anti-seepage photovoltaic structure integrated roof, which includes a plurality of solar photovoltaic modules 19, and transverse drainage grooves 16 are provided on both longitudinal sides of the solar photovoltaic modules 19; longitudinal drainage grooves 15 are provided on both lateral sides of the solar photovoltaic modules 19, and the plurality of solar photovoltaic modules 19 are fixed on the longitudinal drainage grooves 15 by a plurality of pressing blocks 20; the plurality of solar photovoltaic modules 19 are fixedly connected to the corrugated steel sheet 1 of the roof through a plurality of pillars 10, so that the high-durability and anti-seepage photovoltaic structure is integrally formed with the roof structure, and the overall structural performance is good, which solves the potential leakage risk; in addition, the use of the corrugated steel sheet 1 can not only realize the template-free construction process, but also the flexible and lightweight corrugated steel sheet 1 can effectively absorb the shrinkage creep of the ECC material and reduce the weight of the roof structure.

[0020] In this embodiment, the corrugated steel sheet 1 is a corrugated steel sheet with multiple convex and concave surfaces evenly distributed; the width of the corrugated steel sheet 1 is 700-950 mm, the wave pitch is 46-135 mm, the wave height is 14-21 mm, and the thickness is 0.75-1.2 mm; long screws 6 are preset on the multiple convex surfaces; shear connectors 7 are welded on the multiple concave surfaces, and the spacing between two adjacent shear connectors 7 is 400-600 mm; the bottom of the support 10 is welded on the bottom plate 8, and the bottom plate 8 is provided with bolt holes. The long screws 6 cooperate with the bolt holes on the bottom plate 8, and finally a tight connection is achieved by screwing in the corresponding nuts, thereby connecting the entire high-durability and anti-permeability photovoltaic structure to the roof. The setting of the shear connector 7 increases the bonding between the corrugated steel sheet 1 and the ECC material layer and is not connected to the photovoltaic structure.

[0021] In this embodiment, a structural layer 2 is laid on the corrugated steel plate 1, and a bidirectional force-bearing steel mesh 30 is provided in the structural layer 2; a 75 mm thick extruded polystyrene insulation layer 3 is laid on the top of the structural layer 2; a layer of dry-laid tarpaulin 4 is provided on the top of the extruded polystyrene insulation layer 3; a 20 mm thick fine stone concrete layer 5 is laid on the dry-laid tarpaulin 4; and a bidirectional structural steel mesh 31 is provided in the fine stone concrete layer 5.

[0022] In this embodiment, the long screw 6 penetrates the structural layer 2, the extruded polystyrene board insulation layer 3, the dry-laid linoleum 4 and the fine stone concrete layer 5; the top of the long screw 6 exceeds the upper surface of the fine stone concrete layer 5 by 2-3 cm.

[0023] In this embodiment, the thickness of the structural layer 2 is 40-60 mm; the structural layer 2 is made of high-ductility fiber-reinforced cement-based composite material ECC.

[0024] In this embodiment, steel beams 12 are welded between the plurality of pillars 10 to increase the stability of the entire photovoltaic structure; a bracket 11 is provided between the pillars 10 and the solar photovoltaic assembly 19 .

[0025] In this embodiment, the longitudinal drainage groove 15 is fixedly connected to the bracket 11 by bolts, U-shaped channel steels 17 are welded at both ends of the bracket 11, and main drainage grooves 18 are welded on the U-shaped channel steels 17; the transverse drainage grooves 16 are welded to the longitudinal drainage grooves 15.

[0026] In this embodiment, the height of the main drainage groove 18 is lower than that of the longitudinal drainage groove 15 , so that rainwater from the longitudinal drainage groove 15 and the transverse drainage groove 16 can be smoothly collected into the main drainage groove 18 .

[0027] In this embodiment, the longitudinal drainage grooves 15 are located below the two lateral sides of the solar photovoltaic assembly 19 , so that rainwater on the photovoltaic panel can flow smoothly into the longitudinal drainage grooves 15 .

[0028] The second aspect of the present invention provides a construction method of a highly durable and anti-seepage photovoltaic structure integrated roof, which sequentially performs the following steps: Step 1: Lay the corrugated steel sheet 1 on the roof according to the design drawing, and then weld the long screw 6 and the shear connector 7 on the corrugated steel sheet 1; Step 2: After installing the corrugated steel plate 1, lay the bidirectional force-bearing steel mesh 30, cast the structural layer 2, vibrate and compact it, and cover it with a film for maintenance; Step 3: After the structural layer is hardened and formed, lay the extruded polystyrene board insulation layer, then lay the dry-laid tarpaulin, and finally lay the two-way structural steel mesh, and pour the fine stone concrete layer, vibrate and compact it, smooth and calender it, and cover it with film for maintenance; Step 4: After the fine stone concrete layer 5 is formed, several pillars 10 are installed, and the bolt holes of the bottom plate 8 of the pillars are aligned with the reserved long screws 6 and inserted, and the corresponding nuts are screwed in; Step 5: Weld the bracket 11 and the steel beam 12 to the pillar 10, then weld the longitudinal drainage groove 15 to the bracket 11, and weld the transverse drainage groove 16 to the longitudinal drainage groove 15; Step 6: Fix the solar photovoltaic module 19 on the longitudinal drainage groove 15 through a number of pressing blocks 20, finally weld the U-shaped channel steel 17 to the end of the bracket 11, and weld the main drainage groove 18 to the U-shaped channel steel 17, and the entire photovoltaic structure integrated roof is completed.

[0029] It is not difficult for those skilled in the art to understand that the high-durability and anti-seepage photovoltaic structure integrated roof of the present invention includes any combination of the parts in this specification. Due to space limitations and to make the specification concise, these combinations are not introduced in detail one by one here, but after reading this specification, the scope of the present invention consisting of any combination of the parts constituting this specification is self-evident.

Claims

1. A highly durable and impermeable photovoltaic structure integrated roof, comprising a plurality of solar photovoltaic modules (19), wherein transverse drainage grooves (16) are provided on both longitudinal sides of the solar photovoltaic modules (19); and longitudinal drainage grooves (15) are provided on both transverse sides of the solar photovoltaic modules (19), characterized in that: The plurality of solar photovoltaic components (19) are fixed on the longitudinal drainage groove (15) via a plurality of pressing blocks (20); the plurality of solar photovoltaic components (19) are fixedly connected to the corrugated steel sheet (1) on the roof via a plurality of supporting columns (10).

2. The high-durability and anti-seepage photovoltaic structure integrated roof according to claim 1, characterized in that: The corrugated steel plate (1) is a corrugated steel plate with multiple convex surfaces and concave surfaces evenly distributed; the width of the corrugated steel plate (1) is 700-950 mm, the wave pitch is 46-135 mm, the wave height is 14-21 mm, and the thickness is 0.75-1.2 mm; the multiple convex surfaces are all preset with long screws (6); the multiple concave surfaces are all welded with shear connectors (7), and the spacing between two adjacent shear connectors (7) is 400-600 mm; the bottom of the support (10) is welded to the bottom plate (8), the bottom plate (8) is provided with bolt holes, and the long screws (6) are matched with the bolt holes on the bottom plate (8).

3. The high-durability and anti-seepage photovoltaic structure integrated roof according to claim 1 or 2, characterized in that: A structural layer (2) is laid on the corrugated steel plate (1), and a bidirectional stress-bearing steel mesh (30) is arranged in the structural layer (2); a 75 mm thick extruded polystyrene board insulation layer (3) is laid on the top of the structural layer (2); a dry-laid felt (4) is arranged on the top of the extruded polystyrene board insulation layer (3); a 20 mm thick fine stone concrete layer (5) is laid on the dry-laid felt (4); and a bidirectional structural steel mesh (31) is arranged in the fine stone concrete layer (5).

4. The high-durability anti-seepage photovoltaic structure integrated roof according to claim 2, characterized in that: The long screw (6) penetrates the structural layer (2), the extruded polystyrene board insulation layer (3), the dry-laid linoleum (4) and the fine stone concrete layer (5); the top of the long screw (6) exceeds the upper surface of the fine stone concrete layer (5) by 2-3 cm.

5. The high-durability anti-seepage photovoltaic structure integrated roof according to claim 3, characterized in that: The thickness of the structural layer (2) is 40-60 mm; the structural layer (2) is made of high-ductility fiber-reinforced cement-based composite material ECC.

6. The high-durability and anti-seepage photovoltaic structure integrated roof according to claim 1, characterized in that: Steel beams (12) are welded between the plurality of pillars (10); and brackets (11) are provided between the pillars (10) and the solar photovoltaic assembly (19).

7. The high-durability and anti-seepage photovoltaic structure integrated roof according to claim 1, characterized in that: The longitudinal drainage groove (15) is fixedly connected to the bracket (11) by bolts. U-shaped channel steels (17) are welded at both ends of the bracket (11), and a main drainage groove (18) is welded on the U-shaped channel steel (17). The transverse drainage groove (16) is welded on the longitudinal drainage groove (15).

8. The high-durability anti-seepage photovoltaic structure integrated roof according to claim 7, characterized in that: The main drainage groove (18) is lower in height than the longitudinal drainage groove (15).

9. The high-durability anti-seepage photovoltaic structure integrated roof according to claim 1 or 7, characterized in that: The longitudinal drainage grooves (15) are located below the lateral sides of the solar photovoltaic assembly (19).

10. A construction method for a highly durable and impermeable photovoltaic structure integrated roof, using the integrated roof of claim 1, and sequentially performing the following steps: Step 1: Lay the corrugated steel sheet (1) on the roof according to the design drawing, and then weld the long screw (6) and the shear connector (7) on the corrugated steel sheet (1); Step 2: After installing the corrugated steel plate (1), laying the bidirectional force-bearing steel mesh (30), pouring the structural layer (2), vibrating and compacting, and covering with a film for curing; Step 3: After the structural layer (2) is hardened and formed, an extruded polystyrene board insulation layer (3) is laid, followed by dry-laid tarpaulin (4), and finally a bidirectional structural steel mesh (31) is laid, and a fine stone concrete layer (5) is poured, vibrated and compacted, smoothed and calendered, and covered with a film for curing; Step 4: After the fine stone concrete layer (5) is formed, a plurality of pillars (10) are installed, the bolt holes of the bottom plate (8) of the pillars are aligned with the reserved long screws (6) and inserted, and the corresponding nuts are screwed in; Step 5: Weld the bracket (11) and the steel beam (12) to the pillar (10), then weld the longitudinal drainage groove (15) to the bracket (11), and weld the transverse drainage groove (16) to the longitudinal drainage groove (15); Step 6: The solar photovoltaic module (19) is fixed to the longitudinal drainage groove (15) by a plurality of pressing blocks (20), and finally the U-shaped channel steel (17) is welded to the end of the bracket (11), and the main drainage groove (18) is welded to the U-shaped channel steel (17), and the entire photovoltaic structure integrated roof is completed.

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