Combined fan supporting structure of single pile and jacket and combined fan

Abstract

The invention discloses a combined fan supporting structure of a single pile and a jacket and a combined fan, the combined fan supporting structure of the single pile and the jacket is arranged under the water surface and used for supporting the combined fan, the combined fan supporting structure of the single pile and the jacket comprises a main pile and a plurality of inclined piles, and the combined fan supporting structure of the single pile and the jacket further comprises a plurality of main pile guide rings arranged at intervals. The main pile can sequentially stretch into the main pile guide rings, the inclined piles and the main pile are arranged in an included angle mode, one ends of the main pile and the inclined piles are inserted into the underwater mud surface, and the other ends of the main pile and the inclined piles are supported on the combined fan. The main pile and the inclined piles are used for bearing the vertical load of the seabed, namely the main pile bearing is used as the main part and the inclined pile bearing is used as the auxiliary part, so that the vertical load is utilized and shared to a certain extent, the stability of the whole structure is ensured, and the high-load bearing requirement of the deeper seabed can be met; and then the main pile sequentially penetrates through the main pile guide rings, so that the overall stability is further improved.

Description

Technical Field

[0001] The present invention belongs to the field of offshore wind power engineering, and in particular relates to a combined wind turbine support structure of a single pile and a conductor pipe frame and a combined wind turbine. Background Art

[0002] Offshore wind power foundations generally bear large horizontal loads and bending moment loads. For high-power wind turbine equipment, conventional wind turbine foundations are difficult to withstand such huge loads. In order to meet the control requirements of offshore wind power foundation stiffness and natural frequency, traditional offshore wind power single pile foundations usually need to increase the pile diameter and increase the pile length to meet design requirements. Increasing the diameter of the single pile foundation can significantly improve the bearing capacity and stiffness of the foundation, but while increasing the pile diameter, the wall thickness needs to be increased, which leads to a significant increase in the use of steel. In addition, the different properties of the seabed and the change in depth make it difficult for the foundation deformation to meet the design requirements of the wind turbine structure, and it is difficult to meet the load bearing requirements of the deeper seabed.

[0003] Therefore, it is urgent to design a combined wind turbine support structure of a single pile and a conductor frame and a combined wind turbine to solve the above-mentioned problems. Summary of the invention

[0004] In order to solve the technical problem mentioned in the background technology that the steel usage of the traditional monopile foundation increases significantly and it is difficult to meet the load bearing requirements of the deeper seabed, a combined wind turbine support structure of a monopile and a conductor frame and a combined wind turbine are provided.

[0005] To achieve the above-mentioned purpose, the specific technical solutions of a combined wind turbine support structure of a single pile and a pipe frame and a combined wind turbine of the present invention are as follows: A combined wind turbine support structure of a single pile and a conductor frame is arranged under the water surface and is used to support the combined wind turbine, including main piles and inclined piles. A plurality of inclined piles are provided. The combined wind turbine support structure of the single pile and the conductor frame also includes a plurality of main pile guide rings arranged at intervals. The main pile can be inserted into the plurality of main pile guide rings in sequence. The inclined piles and the main piles are arranged at an angle. One end of the main pile and the inclined pile is inserted into the underwater mud surface, and the other end is supported on the combined wind turbine.

[0006] Furthermore, the combined wind turbine support structure of a single pile and a conductor pipe frame also includes a cross brace, which is provided in a plurality and spaced apart in the vertical direction, and each inclined pile can be connected to the cross brace.

[0007] Furthermore, the cross brace is configured as a polygonal structure, and the oblique piles are connected to the corners of the polygonal cross brace.

[0008] Furthermore, the cross brace includes an inclined pile guide ring, which is arranged at the corner of the polygonal cross brace, and the inclined piles can be sequentially passed through the inclined pile guide rings located on different cross braces.

[0009] Furthermore, a plurality of transverse braces are arranged in parallel, and support parts are arranged between adjacent transverse braces, and the support parts are respectively connected to the transverse braces and the inclined piles.

[0010] Furthermore, the support portion is configured in an X shape and is connected to the corner where the horizontal brace and the oblique pile are connected.

[0011] Furthermore, the support portion is arranged in a cross shape and is connected to the edges of the horizontal brace and the oblique piles.

[0012] Furthermore, the combined wind turbine support structure of a single pile and a conductor pipe frame also includes a transition section, which is connected to the top cross brace. The transition section and each cross brace are provided with a main pile guide ring.

[0013] Furthermore, the transition section is X-shaped when viewed from above, a flange is provided on the top, and the bottom of the transition section is fixed with inclined piles connected to the topmost cross brace by welding.

[0014] A combined wind turbine comprises the combined wind turbine support structure of the above-mentioned single pile and pipe frame.

[0015] The combined wind turbine support structure of a single pile and a conductor frame of the present invention has the following advantages: the vertical load of the seabed is borne by main piles and inclined piles, that is, the main piles are used to bear the load mainly and the inclined piles are used to bear the load supplementarily, which to some extent shares the vertical load and ensures the stability of the overall structure, and can meet the high load-bearing requirements of the deeper seabed. In addition, when installing, the staff needs to drive the inclined piles into the water one by one, and then use the main piles to pass through the main pile guide ring one by one, which further improves the overall stability.

[0016] The combined fan of the present invention has the following advantages: 1) Reasonable force transmission and sharing of various loads on the upper part: The support mechanism of the combined wind turbine adopts structural components such as X-shaped inclined piles, cross braces, and built-in inclined piles. It can reasonably transmit force through multiple components, share various loads of the upper overall wind turbine structure, and reasonably transmit the upper overall load to the soil, making full use of the properties of the soil. At the same time, it can meet the control requirements of the stiffness and natural frequency of the offshore wind power foundation.

[0017] 2) Reduce dependence on large-scale machinery and tools, reduce steel consumption, and improve economy: Compared with the single pile foundation, the combined fan support structure has added structural components such as inclined piles and X-shaped inclined piles, which reasonably conduct force and share various loads of the upper overall fan structure, so that the load borne by the main pile is reduced, and its diameter and wall thickness are also reduced accordingly. The weight of the overall combined fan support structure is lighter than that of the single pile foundation, thereby achieving the purpose of reducing dependence on large-scale machinery and tools, reducing steel consumption, and improving economy.

[0018] 3) Wide scope of application: The support structure of the combined fan can reasonably adjust the main piles, inclined piles and X-shaped inclined piles and other structural components (including but not limited to material, length, diameter, wall thickness, etc.) according to the soil properties, specific project environment and the requirements of the upper fan load, so as to meet the requirements of different external environments and increase the scope of application of the combined fan support structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a cross-sectional schematic diagram of a combined wind turbine support structure of a single pile and a conductor frame provided by the present invention after the inclined piles have been driven; Figure 2 It is a cross-sectional schematic diagram of a main pile sinking process of a combined wind turbine support structure of a single pile and a conductor frame provided by the present invention; Figure 3 It is a cross-sectional schematic diagram of a combined wind turbine support structure of a single pile and a conductor frame provided by the present invention after the main pile is sunk; Figure 4 It is a top view schematic diagram of a combined wind turbine support structure of a single pile and a conductor frame provided by the present invention; Figure 5 It is a top view schematic diagram of a horizontal brace of a combined wind turbine support structure of a single pile and a conductor pipe frame provided by the present invention (one layer of the horizontal brace structure).

[0020] Explanation of markings in the figure: 1. Main pile; 2. Transition section; 3. Inclined pile; 4. Support part; 5. Cross brace; 6. Built-in diagonal brace; 7. Main pile guide ring; 8. Inclined pile guide ring. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0022] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0023] In recent years, as the country continues to strengthen its support for new energy and the concept of green development has become more in-depth, offshore wind energy resources have received increasing attention. Compared with traditional energy, wind energy is a clean renewable energy source with no environmental costs such as carbon emissions and no fuel risks. With the development of society, wind power has gradually become an important part of the sustainable development strategy of many countries, and its development momentum is strong. my country's offshore wind energy resources are very rich. Vigorously developing offshore wind energy is of great strategic significance for improving my country's energy structure, saving land, and achieving sustainable economic and social development.

[0024] The horizontal load and bending moment load that offshore wind power foundation generally bears are large. For high-power wind turbine equipment, it is difficult for conventional wind turbine foundation to bear such huge loads. In order to meet the control requirements of offshore wind power foundation stiffness and natural frequency, the traditional offshore wind power single pile foundation usually needs to increase the pile diameter and pile length to meet the design requirements. Increasing the diameter of the single pile foundation can significantly improve the bearing capacity and stiffness of the foundation, but the wall thickness needs to be increased while increasing the pile diameter, which leads to a significant increase in the use of steel. In addition, in most coastal waters of my country, the seabed soft soil layer is thick and the marine engineering environment is harsh. The soft soil layer is different from other strata. Its particularity lies in: high natural water content, large porosity, large compression coefficient, low shear strength, high thixotropy and high rheology. Therefore, with the increase of offshore distance and water depth, the length of the single pile in the water also increases accordingly, resulting in the deformation of the foundation being difficult to meet the design requirements of the wind turbine structure. Therefore, providing a new, cheap, convenient and reliable offshore wind turbine foundation form has important engineering and economic significance for the construction of offshore wind turbines in my country. The different properties of the seabed and the changes in depth make it difficult for the foundation deformation to meet the design requirements of the wind turbine structure, and it is difficult to meet the load-bearing requirements of the deeper seabed.

[0025] Please refer to the attached Figure 1 To Attachment Figure 5 The invention describes a combined wind turbine support structure of a single pile and a pipe frame and a combined wind turbine.

[0026] This embodiment provides a combined wind turbine support structure of a single pile and a pipe frame, such as Figure 1-Figure 3 As shown, it is arranged under the water surface for supporting the combined wind turbine, including a main pile 1 and an inclined pile 3, wherein a plurality of inclined piles 3 are arranged, and the combined wind turbine support structure of the single pile and the conductor frame further includes a plurality of main pile guide rings 7 arranged at intervals, wherein the main pile 1 can be inserted into the plurality of main pile guide rings 7 in sequence, and the inclined pile 3 and the main pile 1 are arranged at an angle, and one end of the main pile 1 and the inclined pile 3 are inserted into the underwater mud surface, and the other end is supported on the combined wind turbine.

[0027] The vertical load of the seabed is borne by the main piles 1 and the inclined piles 3, that is, the main piles 1 are used to bear the load mainly, and the inclined piles 3 are used to bear the load supplementarily. To some extent, the vertical load is shared, and the stability of the overall structure is ensured, which can meet the high load-bearing requirements of the deeper seabed. In addition, during the installation, the staff needs to drive the inclined piles 3 into the water one by one, and then use the main piles 1 to pass through the main pile guide rings 7 one by one, which further improves the overall stability.

[0028] Furthermore, if Figure 4 As shown, the combined wind turbine support structure of a single pile and a conductor pipe frame further includes a cross brace 5 , which is provided in a plurality and spaced apart in the vertical direction, and each inclined pile 3 can be connected to the cross brace 5 .

[0029] Furthermore, the cross brace 5 is configured as a polygonal structure, and the oblique piles 3 are connected to the corners of the polygonal cross brace 5. In this embodiment, the plurality of cross braces 5 are configured as rectangles.

[0030] Furthermore, if Figure 1-Figure 4 As shown, the cross brace 5 includes an inclined pile guide ring 8, which is arranged at the corner of the polygonal cross brace 5. The inclined piles 3 can be sequentially passed through the inclined pile guide rings 8 located on different cross braces 5.

[0031] Specifically, the cross brace 5 further includes an internal diagonal brace 6 , and the main pile guide ring 7 is connected to the cross brace 5 via the internal diagonal brace 6 .

[0032] It should be noted that there are four horizontal braces 5, and the guide rings of the inclined piles 3 are all located at the corners of each layer of horizontal braces 5, and each guide ring of the inclined piles 3 is fixed to the corners of the horizontal braces 5 and the adjacent corners of the X-shaped inclined piles 3 by welding. The guide rings of the inclined piles 3 are all the same and the centers are located on the same central axis.

[0033] Furthermore, a plurality of transverse braces 5 are arranged in parallel, and support portions 4 are provided between adjacent transverse braces 5 , and the support portions 4 are respectively connected to the transverse braces 5 and the inclined piles 3 .

[0034] Further, enter 1- Figure 3 As shown, the support portion 4 is configured in an X shape and is connected to the corner where the cross brace 5 and the inclined pile 3 are connected.

[0035] As a preferred embodiment, the X-shaped support part 4 is divided into three layers: upper, middle and lower, which can be adjusted according to specific environmental conditions and the overall fan structure of the upper part (including but not limited to material, length, diameter, wall thickness, etc.). The adjacent corner points of each layer of the X-shaped support part 4 are fixed to the cross brace 5 and the inclined pile guide ring 8 by welding. Each layer of the X-shaped inclined pile 3 is located between the upper and lower two layers of cross braces 5.

[0036] Optionally, the support portion 4 may also be configured as a cross and connected to the edges of the cross brace 5 and the inclined pile 3 .

[0037] Furthermore, if Figure 3-Figure 5 As shown, the combined wind turbine support structure of a single pile and a conductor pipe frame further includes a transition section 2 , which is connected to a cross brace 5 at the top, and a main pile guide ring 7 is provided on the transition section 2 and each cross brace 5 .

[0038] Furthermore, the transition section 2 is X-shaped when viewed from above, and a flange is provided on the top thereof. The inclined piles 3 connected to the topmost cross brace 5 at the bottom of the transition section 2 are fixed by welding.

[0039] It should be noted that in order to make the combined wind turbine support structure form a whole after complete construction, welding, grouting or other fixing methods can be used to fix the main pile 1 to the main pile guide ring 7 and the inclined pile 3 to the inclined pile guide ring 8.

[0040] This embodiment also provides a combined wind turbine, including the combined wind turbine support structure of the above-mentioned single pile and the conductor frame. It has the following advantages: 1) Reasonable force transmission and sharing of various loads of the upper overall structure: The support mechanism of the combined wind turbine adopts structural components such as X-shaped inclined piles 3, cross braces 5, and built-in inclined piles 3, which can reasonably transmit force through multiple components, share various loads of the upper overall wind turbine structure, and reasonably transmit the upper overall load to the soil, making full use of the properties of the soil, and at the same time meeting the control requirements of the stiffness and natural frequency of the offshore wind power foundation. 2) Reduce dependence on large-scale tools and machinery, reduce steel consumption, and improve economic efficiency: Compared with the single pile foundation, the combined fan support structure has increased structural components such as inclined piles 3 and X-shaped inclined piles 3, which can reasonably conduct force and share various loads of the upper overall fan structure, so that the load borne by the main pile 1 is reduced, and its diameter and wall thickness are also reduced accordingly. The weight of the overall combined fan support structure is lighter than that of the single pile foundation, achieving the purpose of reducing dependence on large-scale tools and machinery, reducing steel consumption, and improving economic efficiency. 3) Wide range of applications: The support mechanism of the combined fan can reasonably adjust the main pile 1, inclined pile 3 and X-shaped inclined pile 3 and other structural components (including but not limited to material, length, diameter, wall thickness, etc.) according to the different requirements of the soil properties, the specific environment of the project and the upper fan load, so as to meet the requirements of adapting to different external environments and increase the scope of application of the combined fan support structure.

[0041] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A combined wind turbine support structure of a single pile and a pipe frame, which is arranged under the water surface and is used to support a combined wind turbine, characterized in that: The combined wind turbine support structure comprises main piles and inclined piles, wherein a plurality of inclined piles are provided. The combined wind turbine support structure of the single pile and the conductor frame further comprises a plurality of main pile guide rings arranged at intervals. The main pile can be inserted into the plurality of main pile guide rings in sequence. The inclined piles and the main piles are arranged at an angle. One end of the main pile and the inclined pile is inserted into the underwater mud surface, and the other end is supported on the combined wind turbine.

2. The combined wind turbine support structure of a single pile and a pipe frame according to claim 1, characterized in that: The combined wind turbine support structure of a single pile and a conductor frame also includes a cross brace, which is provided in a plurality and spaced apart in the vertical direction, and each inclined pile can be connected to the cross brace.

3. The combined wind turbine support structure of a single pile and a pipe frame according to claim 2, characterized in that: The cross brace is set as a polygonal structure, and the oblique piles are connected to the corners of the polygonal cross brace.

4. The combined wind turbine support structure of a single pile and a pipe frame according to claim 3 is characterized in that: The cross brace includes an inclined pile guide ring, which is arranged at the corner of the polygonal cross brace. The inclined piles can be sequentially passed through the inclined pile guide rings located on different cross braces.

5. The combined wind turbine support structure of a single pile and a pipe frame according to claim 2, characterized in that: A plurality of transverse braces are arranged in parallel, and support parts are arranged between adjacent transverse braces, and the support parts are respectively connected to the transverse braces and the inclined piles.

6. The combined wind turbine support structure of a single pile and a pipe frame according to claim 5, characterized in that: The support part is arranged in an X shape and is connected to the corner where the horizontal brace and the oblique pile are connected.

7. The combined wind turbine support structure of a single pile and a pipe frame according to claim 5, characterized in that: The supporting part is arranged in a cross shape and is connected to the edges of the horizontal brace and the oblique piles.

8. The combined wind turbine support structure of a single pile and a pipe frame according to any one of claims 1 or 2, characterized in that: The combined wind turbine support structure of a single pile and a conductor frame also includes a transition section, which is connected to a cross brace at the top. A main pile guide ring is arranged on the transition section and each cross brace.

9. The combined wind turbine support structure of a single pile and a pipe frame according to claim 8, characterized in that: The transition section is X-shaped when viewed from above, with a flange plate provided on the top, and the bottom of the transition section is fixed with inclined piles connected to the topmost cross brace by welding.

10. A combined fan, characterized in that: A combined wind turbine support structure comprising a single pile and a conductor pipe frame as described in any one of claims 1 to 9.

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