Offshore photovoltaic supporting device
By combining prestressed high-strength concrete pipe piles and steel pipe piles using both pre-tensioning and post-tensioning methods, a marine photovoltaic support device is formed, solving the problems of high cost and corrosion prevention of traditional steel pipe piles, and realizing low-cost and high-efficiency marine photovoltaic construction.
Patent Information
- Application Number
- CN202520010601.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-03
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2035-01-03
AI Technical Summary
Traditional steel pipe pile solutions are expensive and have corrosion problems, making it difficult to reduce project costs while meeting bending and crack resistance requirements.
A combination of prestressed high-strength concrete pipe piles and steel pipe piles, using both pre-tensioned and post-tensioned methods, is employed. These are connected by welding and grouting, along with anti-corrosion measures, to form a marine photovoltaic support device.
It reduced project costs, improved construction efficiency, met the requirements for bending and crack resistance, and solved the corrosion problem of steel pipe piles.
Smart Images
Figure CN223633980U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to offshore photovoltaic power generation technical field, concretely relates to a kind of offshore photovoltaic support device. BACKGROUND
[0002] As the key support system of offshore photovoltaic platform, pile foundation needs not only superior corrosion resistance, but also good bending resistance and crack resistance. Therefore, from the technical and economic point of view, the selection scheme of offshore photovoltaic pile foundation occupies a pivotal position. At present, in the development of offshore photovoltaic projects, the traditional steel pipe pile scheme has the problems of high cost and difficulty in avoiding steel pipe pile corrosion. On the basis of meeting the requirements of bending resistance and crack resistance, in order to reduce the project cost and solve the problem of steel pipe pile corrosion, pile foundation sinking construction difficulty also needs to be considered, and a selection scheme of offshore photovoltaic pile foundation that can meet the above four requirements is needed. SUMMARY
[0003] In order to solve the problem of high cost of the traditional steel pipe pile scheme in the prior art, and to solve the problem of steel pipe pile corrosion in the prior art, the utility model provides a support device for offshore photovoltaic power generation, which can reduce the project cost on the basis of meeting the requirements of bending resistance and crack resistance, and at the same time solve the problem of steel pipe pile corrosion.
[0004] The utility model discloses a support device for offshore photovoltaic power generation, which comprises a steel pipe pile located below the 3m range of the ocean mud surface.
[0005] The utility model discloses a support device for offshore photovoltaic power generation, which comprises a steel pipe pile located below the 3m range of the ocean mud surface.
[0006] The utility model discloses a support device for offshore photovoltaic power generation, which comprises a steel pipe pile located below the 3m range of the ocean mud surface.
[0007] The utility model discloses a support device for offshore photovoltaic power generation, which comprises a steel pipe pile located below the 3m range of the ocean mud surface.
[0008] The further improvement of the technical scheme of the utility model lies in that the top end of the fixed anchor bar is bent and welded together with the middle end plate above the post-tensioned prestressed high-strength concrete pipe pile.
[0009] The further improvement of the technical scheme of the utility model lies in that the space between the plugging plate and the middle end plate above the post-tensioned prestressed high-strength concrete pipe pile is grouted with grouting material.
[0010] The further improvement of the technical scheme of the utility model lies in that the middle end plate below the post-tensioned prestressed high-strength concrete pipe pile is welded together with the top end of the steel pipe pile, and the middle end plate above the post-tensioned prestressed high-strength concrete pipe pile is welded together with the upper end plate below the pre-tensioned prestressed high-strength concrete pipe pile.
[0011] The further improvement of the technical scheme of the utility model lies in that the middle end plate above the post-tensioned prestressed high-strength concrete pipe pile is welded with the outer circumferential groove of the upper end plate below the pre-tensioned prestressed high-strength concrete pipe pile, and when the inner diameter of the post-tensioned prestressed high-strength concrete pipe pile is greater than or equal to 800 mm, the middle end plate above the post-tensioned prestressed high-strength concrete pipe pile is also welded with the inner circumferential groove of the upper end plate below the pre-tensioned prestressed high-strength concrete pipe pile.
[0012] The further improvement of the technical scheme of the utility model lies in that the welding position of the upper end plate below the pre-tensioned prestressed high-strength concrete pipe pile and the middle end plate above the post-tensioned prestressed high-strength concrete pipe pile is provided with an anti-corrosion measure.
[0013] Thanks to the above technical scheme, the technical progress achieved by the utility model includes:
[0014] The utility model takes advantage of the corrosion resistance of concrete structure, fully utilizes the excellent crack resistance of prestressed high-strength concrete structure, and also takes into account the easy sinking of steel pipe pile, thereby improving the engineering construction efficiency and reducing the engineering cost.
[0015] The pre-tensioned prestressed high-strength concrete pipe pile in the utility model is mainly applied to areas with low cracking moment demand, thereby taking advantage of the low price of pre-tensioned prestressed high-strength concrete pipe pile; the post-tensioned prestressed high-strength concrete pipe pile in the utility model is mainly applied to areas with high cracking moment demand, thereby taking advantage of the excellent crack resistance of post-tensioned prestressed high-strength concrete pipe pile; the steel pipe pile in the utility model is located in the range of marine soil bearing stratum, thereby retaining the friendly sinking advantage of steel pipe pile without increasing additional anti-corrosion cost.
[0016] The core pouring hole is arranged, so that the space between the plugging plate and the middle end plate above the post-tensioned prestressed high-strength concrete pipe pile can be conveniently grouted with grouting material.
[0017] The utility model discloses a fixing anchor bar is inserted to the anchor bar hole and is welded together, can middle end plate fixed above post -tensioned prestressed high -strength concrete pipe pile, through the fixed anchor bar is inserted to the grouting material between plugging plate and the middle end plate above post -tensioned prestressed high -strength concrete pipe pile, can the fixed anchor bar is fixed in the core pouring inside post -tensioned prestressed high -strength concrete pipe pile, thereby further fixed anchor bar and the middle end plate above post -tensioned prestressed high -strength concrete pipe pile are welded together firmly.
[0018] The utility model discloses a fixing anchor bar's top end is bent after, can increase the contact area of fixed anchor bar and the middle end plate above post -tensioned prestressed high -strength concrete pipe pile, thereby fixed anchor bar and the middle end plate above post -tensioned prestressed high -strength concrete pipe pile are welded together firmly.
[0019] The utility model discloses a middle end plate above post -tensioned prestressed high -strength concrete pipe pile and the upper end plate circle bevel groove welding below pre -tensioned prestressed high -strength concrete pipe pile, can post -tensioned prestressed high -strength concrete pipe pile and pre -tensioned prestressed high -strength concrete pipe pile more firmly connect together.
[0020] Compared with the traditional steel pipe pile system, in addition to the expensive steel itself, in the seawater and atmospheric heavy corrosion environment, both heavy anti -corrosion coating and anticorrosion allowance need to be reserved, and cathodic protection measures are also needed, the construction procedure is complex, the engineering cost is high and the anticorrosion effect is not easy to guarantee, in the utility model, since only need to set up the anticorrosion measure at the welding place of the upper end plate below pre -tensioned prestressed high -strength concrete pipe pile and the middle end plate above post -tensioned prestressed high -strength concrete pipe pile, therefore, the utility model construction procedure is simple, and the engineering cost is low. ACCURACY
[0021] Figure 1 It is a structure schematic view of a kind of offshore photovoltaic support device of the utility model;
[0022] Figure 2 It is a kind of offshore photovoltaic support device of the utility model Figure 1 A portion structure schematic view of;
[0023] Figure 3 It is a kind of offshore photovoltaic support device of the utility model Figure 2 B portion structure schematic view.
[0024] In the drawing, 1, steel pipe pile;
[0025] 2, CD pile; 21, middle end plate; 22, hole; 23, anchor hole; 24, connecting anchor; 25, blocking plate; 26, fixed anchor; 27, grouting material;
[0026] 3, PHC pile; 31, upper end plate. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further explained in detail below in combination with specific implementation manners and with reference to the drawings. In the following description, the description of the known structure and technology is omitted to avoid unnecessary confusion of the concept of the utility model.
[0028] Firstly refer to Figure 1 It can be known that the utility model includes a steel pipe pile 1 located below, the steel pipe pile 1 is inserted into the area below 3m below the marine mud surface, the upper portion of the steel pipe pile 1 is provided with a post-tensioned prestressed high-strength concrete pipe pile (i.e. CD pile 2), the CD pile 2 is inserted into the range from the marine water surface to the mud surface and 3m below the mud surface, the upper portion of the CD pile 2 is provided with a pre-tensioned prestressed high-strength concrete pipe pile (i.e. PHC pile 3), and the PHC pile 3 is located above the marine water surface and exposed in the air.
[0029] Refer to Figure 2 It can be known that the top portion of the side wall of the CD pile 2 in the utility model is pre-buried with a connecting anchor 24, both ends of the CD pile 2 are provided with middle end plates 21, a hole 22 for grouting is formed in the central position of the middle end plate 21 located above the CD pile 2 (the diameter of the hole 22 is 200mm, etc.), and an anchor hole 23 is formed in the position corresponding to the connecting anchor 24 on one side of the hole 22; continue to refer to Figure 2 It can be known that the inside of the CD pile 2 is further provided with a horizontal blocking plate 25, the space between the blocking plate 25 and the middle end plate 21 located above the CD pile 2 is grouted with grouting material 27, the strength grade of the grouting material 27 is not lower than the concrete strength grade of the CD pile 2 and the PHC pile 3, and a plurality of vertical fixed anchors 26 are arranged in the grouting material 27 in the circumferential direction, the top portion of each fixed anchor 26 is bent by 5d (d is the diameter of the fixed anchor 26) and then welded together with the middle end plate 21 located above the CD pile 2. In the utility model, the measures of once pre-buried anchor in the top portion of the side wall of the CD pile 2 and twice grouting in the inside of the CD pile 2 are adopted to realize the reliable connection between the middle end plate 21 located above the CD pile 2 and the CD pile 2. In the utility model, the construction process of the CD pile 2 is synchronous with the traditional CD pile 2 prestressed steel strand hole 22 grouting, does not additionally increase the production period, can reliably connect the middle end plate 21 located above the CD pile 2 and the CD pile 2 together, meets the engineering requirement of welding connection with the PHC pile 3 in the later period, and thus realizes the effective combination of the PHC pile 3 and the CD pile 2.
[0030] With reference to the above Figure 1 It can be known that the upper end plate 31 below the PHC pile 3 is fixedly connected with the middle end plate 21 above the CD pile 2, and the specific reference Figure 3 It can be known that the upper end plate 31 below the PHC pile 3 is fixedly connected with the middle end plate 21 above the CD pile 2, and the specific reference
[0031] The working principle of the supporting device for offshore photovoltaic power generation is that the PHC pile 3, the CD pile 2 and the steel pipe pile 1 in the utility model are sequentially welded together, and anticorrosion measures are arranged at the welding position of the PHC pile 3 and the CD pile 2, and the anticorrosion measures are selected according to the Water Transport Engineering Structure Durability Design Standard JTS153-2015 to be coated with an organic composite layer.
[0032] Then, the welded utility model is inserted into the ocean downwards until the steel pipe pile 1 in the utility model is inserted into the area 3m below the ocean mud surface, at this time, the CD pile 2 is located in the range from the ocean water surface to the mud surface and 3m below the mud surface, and the PHC pile 3 is located above the ocean water surface and exposed in the air.
[0033] In the above embodiment, the utility model provides a supporting device for offshore photovoltaic power generation, and the utility model makes full use of the corrosion resistance of the concrete structure, and fully gives play to the excellent crack resistance of the prestressed high-strength concrete structure, and also takes into account the advantages of easy pile sinking of the steel pipe pile, improves the engineering construction efficiency and reduces the engineering cost; compared with the traditional steel pipe pile system, the utility model has obvious advantages and application prospect in the construction of offshore photovoltaic power station.
[0034] The above-described embodiments are merely preferred embodiments of the utility model, and do not limit the design concept and scope of the utility model. Various modifications and improvements to the technical solutions of the utility model made by those skilled in the art without departing from the design concept of the utility model shall fall within the protection scope of the utility model, and the technical content claimed by the utility model has been fully recorded in the claims.
Claims
1. A support device for offshore photovoltaics comprising steel pipe piles (1) located in the area 3 m down to the ocean mudline, characterized in that: The steel pipe pile (1) is provided with a post-tensioned prestressed high-strength concrete pipe pile located above the sea surface to the mud surface and within a range of 3 m below the mud surface, both ends of the post-tensioned prestressed high-strength concrete pipe pile are provided with a middle end plate (21), the upper part of the post-tensioned prestressed high-strength concrete pipe pile is provided with a pre-tensioned prestressed high-strength concrete pipe pile located above the sea surface and provided with an upper end plate (31) at both ends, the lower upper end plate (31) is welded together with the middle end plate (21) located above the post-tensioned prestressed high-strength concrete pipe pile.
2. A support device for offshore photovoltaics according to claim 1, characterized in that: A core pouring hole (22) is formed in the center of the middle end plate (21) located above the post-tensioned prestressed high-strength concrete pipe pile, and an anchor hole (23) is formed in the edge of the middle end plate (21) located above the post-tensioned prestressed high-strength concrete pipe pile.
3. A support arrangement for offshore photovoltaics according to claim 2, characterised in that: A connecting anchor (24) is embedded in the anchor hole (23) at the top of the side wall of the post-tensioned prestressed high-strength concrete pipe pile, a plugging plate (25) is arranged inside the core of the post-tensioned prestressed high-strength concrete pipe pile, and a fixed anchor (26) connected with the middle end plate (21) located above the post-tensioned prestressed high-strength concrete pipe pile is arranged above the plugging plate (25).
4. A support arrangement for offshore photovoltaics according to claim 3, characterised in that: The top end of the fixed anchor (26) is bent and welded together with the middle end plate (21) located above the post-tensioned prestressed high-strength concrete pipe pile.
5. A support device for offshore photovoltaics according to claim 3, characterized in that: The space between the plugging plate (25) and the middle end plate (21) located above the post-tensioned prestressed high-strength concrete pipe pile is grouted with grouting material (27).
6. A support arrangement for offshore photovoltaics according to any one of claims 1-5, characterized in that: The middle end plate (21) located below the post-tensioned prestressed high-strength concrete pipe pile is welded together with the top end of the steel pipe pile (1), and the middle end plate (21) located above the post-tensioned prestressed high-strength concrete pipe pile is welded together with the upper end plate (31) located below the pre-tensioned prestressed high-strength concrete pipe pile.
7. A support arrangement for offshore photovoltaics according to claim 6, characterised in that: The middle end plate (21) located above the post-tensioned prestressed high-strength concrete pipe pile is bevel welded with the outer peripheral groove of the upper end plate (31) located below the pre-tensioned prestressed high-strength concrete pipe pile, and when the inner diameter of the post-tensioned prestressed high-strength concrete pipe pile is greater than or equal to 800 mm, the middle end plate (21) located above the post-tensioned prestressed high-strength concrete pipe pile is also bevel welded with the inner peripheral groove of the upper end plate (31) located below the pre-tensioned prestressed high-strength concrete pipe pile.
8. A support device for offshore photovoltaics according to any of claims 1-5, characterized in that: Anti-corrosion measures are arranged at the welding position of the upper end plate (31) located below the pre-tensioned prestressed high-strength concrete pipe pile and the middle end plate (21) located above the post-tensioned prestressed high-strength concrete pipe pile.