Photovoltaic roof support structure for enhanced wind uplift resistance

Abstract

The utility model discloses a photovoltaic roof support structure for reinforcing wind -lift performance, through setting up organ concert folding spring part and wave spring part of spring telescopic direction respectively perpendicular to and parallel to main structure in the support for supporting roof panel on main structure, dissipating wind load energy in the direction of perpendicular to each other respectively with them, to this absorption external load from each direction, effectively promoted the wind -lift ability of overall structure, alleviated the problem that roof wind -lift performance deteriorated caused by the mechanics complexity of roof system intensified because of the arrangement photovoltaic board, and can greatly reduce the stress condition of support and fastener, prolong their service life, avoid the security hidden danger caused by the connection failure, simultaneously, still promoted the anti -fatigue performance and the anti -seismic performance of support significantly, provided powerful guarantee for the long -term stable operation of photovoltaic system.

Description

Technical Field

[0001] This utility model relates to the field of building roofing technology, specifically a photovoltaic roof support structure for enhancing wind uplift resistance. Background Technology

[0002] In recent years, profiled metal roofing panels have achieved breakthrough applications in the building envelope field due to their advantages such as lightweight, high strength, ease of processing and molding, and flexible shapes. Such buildings have extremely high requirements for the wind uplift resistance of the roofing system, especially in typhoon-prone areas. Traditional concrete roofs are too heavy to meet the requirements, while metal roofs have become the first choice due to their excellent strength-to-weight ratio.

[0003] Photovoltaic metal roofs, combining power generation and structural performance, have seen a significant increase in penetration rates in industrial plants and public buildings. However, the coordinated design of photovoltaic panels and metal roofs faces serious challenges: firstly, the additional load from the photovoltaic panels exacerbates the mechanical complexity of the roof system; secondly, stress concentration easily occurs at the connection nodes between the supports and the main structure under long-term wind vibration, leading to fastener shear failure or local buckling of the main structure. Industry research indicates that approximately 23% of photovoltaic roof maintenance accidents originate from damage to connection nodes, with repair costs reaching 15%-30% of the initial construction cost.

[0004] In existing technologies, improving wind uplift resistance mainly relies on two methods: one is to increase the support density (e.g., reducing the spacing from 1.5m to 0.8m) to distribute the load, but this will increase material costs by more than 40% and affect roof drainage and construction efficiency; the other is to use composite reinforcement structures (e.g., adding angle steel trusses or prestressed cables), which can improve local stiffness, but the large number of components increases the roof's self-weight by 25%-30%, and also leads to thermal bridging and corrosion risks. More importantly, neither of the above solutions effectively solves the energy dissipation problem under dynamic wind loads—when the instantaneous wind pressure exceeds the pull-out limit of the fasteners, the structure will still fail due to brittle fracture.

[0005] The root cause lies in two major flaws in traditional support design: first, rigid connections allow wind-induced vibration energy to be directly transferred to the fasteners; second, the planar contact between the support and the main structure makes it difficult to adapt to the micro-displacements caused by temperature deformation of the roof, thus accelerating fastener fatigue.

[0006] Therefore, the industry urgently needs a roof support structure that can solve the problem of deteriorated wind uplift resistance caused by the increased mechanical complexity of the roof system due to the installation of photovoltaic panels. Utility Model Content

[0007] The technical problem to be solved by this utility model is to provide a photovoltaic roof support structure for enhancing wind uplift resistance, so as to solve the problem of deterioration of roof wind uplift resistance caused by the increased mechanical complexity of the roof system due to the arrangement of photovoltaic panels.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A photovoltaic roof support structure for enhancing wind uplift resistance includes two roof panels, a support, and a main structure. The two roof panels are any two adjacent panels on the roof, and the two roof panels are supported on the main structure by the support. Its features are: At least one roof panel has a photovoltaic panel fixed on its top surface, and the number of photovoltaic panels can be adapted to the installation needs of photovoltaic systems of different scales. The support is composed of a support part, a wave-shaped spring part, a connecting part and a base connected in sequence, and the middle part of the support part is provided with an accordion-style spring part; the upper end of the support part is clamped between the joint of two roof panels and welded and fixed; the base is fixed to the main structure by fasteners; and the spring extension and contraction directions of the accordion-style spring part and the wave-shaped spring part are perpendicular to and parallel to the main structure, respectively.

[0009] Therefore, this utility model, by incorporating accordion-style springs and wave-shaped springs with spring extension directions perpendicular and parallel to the main structure respectively in the supports used to support the roof panels on the main structure, dissipates wind load energy in mutually perpendicular directions, thereby absorbing external loads from all directions. This effectively improves the overall structure's wind uplift resistance, alleviates the problem of deteriorated roof wind uplift performance caused by the increased mechanical complexity of the roof system due to the arrangement of photovoltaic panels, and significantly reduces the stress on the supports and fasteners, extending their service life and avoiding safety hazards caused by connection failures. At the same time, it also significantly improves the fatigue resistance and seismic performance of the supports, providing a strong guarantee for the long-term stable operation of the photovoltaic system.

[0010] Furthermore, this utility model has the advantages of easy installation and low maintenance cost.

[0011] Preferably, the photovoltaic panel is seamlessly bonded to the top surface of the roof panel using high-strength structural adhesive. This not only simplifies the installation process of the photovoltaic panel and ensures the durability and reliability of the bonded area, but also improves the fit between the photovoltaic panel and the roof panel, further enhancing the wind pressure resistance of the entire system.

[0012] Preferably, the upper end of the support and the joint of the two roof panels are precision welded by an electric welding machine to ensure a tight bond and high-strength connection between the two, so that the entire structure can remain stable when subjected to external loads. This not only improves the overall structural stability but also greatly enhances its ability to resist external environmental erosion.

[0013] Preferably, the fasteners are screws with drill tails, which makes the installation process more convenient and efficient. This not only improves installation efficiency but also ensures a tight fit between the fasteners and the main structure, enabling fast and stable installation on roofs of different materials.

[0014] Preferably, the roof panels, supports, and main structure are all made of stainless steel. Therefore, utilizing the excellent corrosion resistance and high strength of stainless steel, it can not only effectively resist wind and rain erosion and ultraviolet radiation, but also maintain the stability and safety of the structure during long-term use.

[0015] Preferably, the fasteners are made of stainless steel or carbon steel to meet the application requirements of different scenarios.

[0016] Preferably, the main structure is arranged horizontally to provide solid support and a stable foundation for the entire system.

[0017] Compared with the prior art, the present invention has the following beneficial effects: First, this utility model, by providing accordion-style spring section 2-1-1 and wave-shaped spring section 2-2 with spring extension directions perpendicular and parallel to the main structure 3 respectively in the support 2 used to support the roof panel 1 on the main structure 3, dissipates wind load energy in mutually perpendicular directions, thereby absorbing external loads from all directions. This effectively improves the wind uplift resistance of the overall structure, alleviates the problem of deteriorated wind uplift resistance caused by the increased mechanical complexity of the roof system due to the arrangement of photovoltaic panels 4, and greatly reduces the stress on the support 2 and fasteners 5, extending their service life and avoiding safety hazards caused by connection failure. At the same time, it also significantly improves the fatigue resistance and seismic resistance of the support, providing a strong guarantee for the long-term stable operation of the photovoltaic system.

[0018] Secondly, this utility model has the advantages of easy installation and low maintenance cost.

[0019] Third, this utility model uses high-strength structural adhesive 6 to seamlessly bond the photovoltaic panel 4 to the top surface of the roof panel 1, which not only simplifies the installation process of the photovoltaic panel 4 and ensures the durability and reliability of the bonding parts, but also improves the fit between the photovoltaic panel 4 and the roof panel 1, further enhancing the wind pressure resistance of the entire system. Attached Figure Description

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments: Figure 1 This is a schematic diagram of the photovoltaic roof support structure of this utility model. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the embodiments and accompanying drawings to help those skilled in the art better understand the inventive concept of the present invention. However, the scope of protection of the claims of the present invention is not limited to the following embodiments. For those skilled in the art, all other embodiments obtained without creative effort without departing from the inventive concept of the present invention are within the scope of protection of the present invention.

[0022] like Figure 1 As shown, the present invention discloses a photovoltaic roof support structure for enhancing wind uplift resistance, including two roof panels 1, a support 2 and a main structure 3. The two roof panels 1 are any two adjacent panels in the roof, and the two roof panels 1 are supported on the main structure 3 by the support 2. At least one roof panel 1 has a photovoltaic panel 4 fixed on its top surface, and the number of photovoltaic panels 4 can be adapted to the installation needs of photovoltaic systems of different scales. The support 2 is composed of a support part 2-1, a wave-shaped spring part 2-2, a connecting part 2-3 and a base 2-4 connected in sequence, and the middle part of the support part 2-1 is provided with an accordion-style spring part 2-1-1; the upper end of the support part 2-1 is sandwiched between the joint of two roof panels 1 and welded and fixed; the base 2-4 is fixed to the main structure 3 by fasteners 5; and the spring extension and contraction directions of the accordion-style spring part 2-1-1 and the wave-shaped spring part 2-2 are perpendicular to and parallel to the main structure 3, respectively.

[0023] Therefore, this utility model, by providing accordion-style spring parts 2-1-1 and wave-shaped spring parts 2-2 in the support 2 used to support the roof panel 1 on the main structure 3, with the spring extension directions perpendicular to and parallel to the main structure 3 respectively, dissipates wind load energy in mutually perpendicular directions, thereby absorbing external loads from all directions. This effectively improves the wind uplift resistance of the overall structure, alleviates the problem of deteriorated wind uplift resistance caused by the increased mechanical complexity of the roof system due to the arrangement of photovoltaic panels 4, and greatly reduces the stress on the support 2 and fasteners 5, extending their service life and avoiding safety hazards caused by connection failure. At the same time, it also significantly improves the fatigue resistance and seismic resistance of the support, providing a strong guarantee for the long-term stable operation of the photovoltaic system.

[0024] Furthermore, this utility model has the advantages of easy installation and low maintenance cost.

[0025] The above is the basic embodiment of this utility model, and further optimizations, improvements and limitations can be made based on this basic embodiment: Preferably, the photovoltaic panel 4 is seamlessly bonded to the top surface of the roof panel 1 using high-strength structural adhesive 6. This not only simplifies the installation process of the photovoltaic panel 4 and ensures the durability and reliability of the bonded parts, but also improves the fit between the photovoltaic panel 4 and the roof panel 1, further enhancing the wind pressure resistance of the entire system.

[0026] Preferably, the upper end of the support 2-1 and the joint of the two roof panels 1 are precisely welded by an electric welding machine to ensure a tight bond and high-strength connection between the two, so that the whole structure can remain stable when subjected to external loads. This not only improves the overall structural stability, but also greatly enhances its ability to resist external environmental erosion.

[0027] Preferably, the fastener 5 is a screw with a drill bit, which makes the installation process more convenient and efficient. This not only improves the installation efficiency, but also ensures a tight fit between the fastener 5 and the main structure 3, so as to achieve fast and stable installation on roofs of different materials.

[0028] Preferably, the roof panel 1, the support 2, and the main structure 3 are all made of stainless steel. Therefore, by utilizing the excellent corrosion resistance and high strength of stainless steel, it can not only effectively resist wind and rain erosion and ultraviolet radiation, but also maintain the stability and safety of the structure during long-term use.

[0029] Preferably, the fastener 5 is made of stainless steel or carbon steel to meet the application requirements in different scenarios.

[0030] Preferably, the main structure 3 is arranged horizontally to provide solid support and a stable foundation for the entire system. This utility model is not limited to the specific embodiments described above. Based on the above content and in accordance with the common technical knowledge and conventional methods in the field, without departing from the basic technical idea of ​​this utility model, other equivalent modifications, substitutions or alterations can be made to this utility model, all of which fall within the protection scope of this utility model.

Claims

1. A photovoltaic roof support structure for enhancing wind uplift resistance, comprising two roof panels (1), a support (2) and a main structure (3), wherein the two roof panels (1) are any two adjacent panels in the roof, and the two roof panels (1) are supported on the main structure (3) by the support (2); Its features are: At least one roof panel (1) has a photovoltaic panel (4) fixed on its top surface. The support (2) is composed of a support part (2-1), a wave-shaped spring part (2-2), a connecting part (2-3), and a base (2-4) connected in sequence. The middle part of the support part (2-1) is provided with an accordion-style spring part (2-1-1). The upper end of the support part (2-1) is sandwiched between the joints of the two roof panels (1) and welded and fixed. The base (2-4) is fixed to the main structure (3) by fasteners (5). The spring extension and contraction directions of the accordion-style spring part (2-1-1) and the wave-shaped spring part (2-2) are perpendicular to and parallel to the main structure (3), respectively.

2. The photovoltaic roof support structure for enhancing wind uplift resistance according to claim 1, characterized in that: The photovoltaic panel (4) is seamlessly bonded to the top surface of the roof panel (1) using high-strength structural adhesive (6).

3. The photovoltaic roof support structure for enhancing wind uplift resistance according to claim 1 or 2, characterized in that: The upper end of the support (2-1) and the joint of the two roof panels (1) are precisely welded using an electric welding machine.

4. The photovoltaic roof support structure for enhancing wind uplift resistance according to claim 1 or 2, characterized in that: The fastener (5) is a screw with a drill bit.

5. The photovoltaic roof support structure for enhancing wind uplift resistance according to claim 1 or 2, characterized in that: The roof panel (1), support (2) and main structure (3) are all made of stainless steel.

6. The photovoltaic roof support structure for enhancing wind uplift resistance according to claim 1 or 2, characterized in that: The fastener (5) is made of stainless steel or carbon steel.

7. The photovoltaic roof support structure for enhancing wind uplift resistance according to claim 1 or 2, characterized in that: The main structure (3) is arranged horizontally.

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