Ultra-large type offshore wind power single pile foundation

Abstract

The ultra-large type offshore wind power single pile foundation comprises a pile body, an outer platform structure, a first crawling ladder structure and a second crawling ladder structure, the outer platform structure is arranged on the outer side of the upper end of the pile body, and the first crawling ladder structure and the second crawling ladder structure are arranged on the two sides of the pile body; the first crawling ladder structure and the second crawling ladder structure respectively comprise an upper crawling ladder, an upper crawling ladder protection cage, a lower crawling ladder, a berthing component and a rest platform, the lower crawling ladder is fixed at the lower end of the outer side of the pile body, the upper crawling ladder is fixed at the upper end of the outer side of the pile body, the lower end of the upper crawling ladder is connected with but not contacted with the upper end of the lower crawling ladder, and the upper crawling ladder protection cage is fixed at the outer side of the upper crawling ladder; the berthing component is fixed outside the lower ladder, and the rest platform is located at the joint of the lower end of the upper ladder and the upper end of the lower ladder and fixed to the upper end of the lower ladder. The construction method is convenient and simple in construction, high in construction efficiency and capable of avoiding deformation.

Description

Technical Field

[0001] The invention relates to a monopile foundation, in particular to an ultra-large offshore wind power monopile foundation, and belongs to the technical field of offshore wind power. Background Art

[0002] Offshore wind power monopile foundation is an important component of offshore wind power. The external part of the traditional offshore wind power monopile foundation mainly adopts a ring-shaped winding ladder structure. Since the installation environment of offshore wind power monopile is mainly located in shallow sea areas, the environment is humid and the wind and waves are large, which is not conducive to on-site welding construction. Therefore, it is currently necessary to weld the monopile body, outer platform and ring-shaped winding ladder in the factory, and then hoist the external structures such as the outer platform and the ring-shaped winding ladder on the monopile body on site. The outer platform and the ring-shaped winding ladder are usually fixed with bolts and other structures and the connection seat pre-welded on the monopile body. With the increase in the capacity of the current offshore wind power projects, the weight of the latest super-large offshore wind power monopile has reached more than 3,000 tons. If the traditional structure is still used, it is easy to deform during transportation, resulting in the inability to successfully complete the installation on site. In addition, the ring-shaped winding ladder finally needs to be completely lifted and installed on the outside of the monopile body. In the case of a very large self-weight of the ring-shaped winding ladder, its construction is very difficult and it is easy to collide and deform. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an ultra-large offshore wind power monopile foundation, which is easy to install and construct and not easily deformed during transportation.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: A super-large offshore wind power single pile foundation comprises a pile body, an outer platform structure, a first ladder structure and a second ladder structure, the outer platform structure is arranged on the outer side of the upper end of the pile body, the first ladder structure and the second ladder structure are arranged on both sides of the pile body, the first ladder structure and the second ladder structure respectively comprise an upper ladder, an upper ladder guard cage, a lower ladder, a berthing component and a rest platform, the lower ladder is fixed to the lower end of the outer side of the pile body, the upper ladder is fixed to the upper end of the outer side of the pile body and the lower end of the upper ladder is connected to the upper end of the lower ladder but not in contact, the upper ladder guard cage is fixed to the outer side of the upper ladder, the berthing component is fixed to the outer side of the lower ladder, the rest platform is located at the connection between the lower end of the upper ladder and the upper end of the lower ladder and the rest platform is fixed to the upper end of the lower ladder.

[0005] Furthermore, a first connecting member group is provided on one side of the inner side surface of the lower ladder, and a second connecting member group is provided on the other side of the inner side surface of the lower ladder, the first connecting member group and the second connecting member group respectively include a first latch, a second latch and a first flange which are arranged in sequence from bottom to top, a first sleeve which matches the first latch is provided on the pile body, a second sleeve which matches the second latch is provided on the pile body, and a second flange which matches the first flange is provided on the pile body.

[0006] Further, the length of the first pin in the first connector group is greater than the length of the first pin in the second connector group, and the length of the second pin in the first connector group is greater than the length of the second pin in the second connector group.

[0007] Furthermore, a third connecting member group is provided on one side of the inner side surface of the upper ladder, and a fourth connecting member group is provided on the other side of the inner side surface of the upper ladder. The third connecting member group and the fourth connecting member group respectively include a third flange and a third latch which are arranged in sequence from bottom to top. A fourth flange which matches the third flange is provided on the pile body, and a third sleeve which matches the third latch is provided on the pile body.

[0008] Furthermore, the length of the third latch in the third connector group is greater than the length of the third latch in the fourth connector group.

[0009] Furthermore, a reference electrode and an auxiliary anode are provided at the lower end of the mooring component, a wiring hole opened in the vertical direction is opened in the vertical structural member on one side of the mooring component, and a wiring pipe is provided on the side of the upper ladder. The cables of the reference electrode and the auxiliary anode are passed upward along the wiring hole of the mooring component to the wiring pipe of the upper ladder, and then connected to the power supply equipment of the outer platform structure from the upper end of the wiring pipe.

[0010] Furthermore, the outer platform structure includes an outer platform structure body, an outer platform ring beam, an outer platform handrail and a plurality of outer platform diagonal braces. The outer platform ring beam is fixed on the inner side of the outer platform structure body, the outer platform handrail is vertically fixed on the outer edge of the outer platform structure body, and a diagonal brace support corresponding to the plurality of outer platform diagonal braces is arranged on the outer side of the upper end of the pile body. The outer platform diagonal brace is inclined, and the upper end of the outer platform diagonal brace is fixedly connected to the lower side of the outer platform structure body, and the lower end of the outer platform diagonal brace is detachably fixed on the diagonal brace support. The plurality of outer platform diagonal braces are equally spaced along the circumferential direction of the pile body.

[0011] Furthermore, an outer platform entrance is provided on the outer platform structure body corresponding to the upper ends of the first ladder structure and the second ladder structure, an outer platform ladder is provided on the upper end of the outer platform entrance, and the lower end of the outer platform ladder is connected to the upper end of the upper ladder but does not touch.

[0012] Furthermore, the outer platform ring beam is composed of a plurality of arc-shaped beams connected end to end, and the ends of two adjacent arc-shaped beams are fixedly connected by a connecting piece.

[0013] Compared with the prior art, the present invention has the following advantages and effects: the present invention provides an ultra-large offshore wind power single pile foundation, the ladder adopts a straight ladder structure on both sides, and is installed in upper and lower sections, the weight of a single ladder structure is greatly reduced, the ladder and the pile body are installed with a structure of pins and flanges, and the pins on both sides are one long and one short. When hoisting, just align the long pin, and then use the long pin partially inserted into the sleeve as a fulcrum to rotate to complete the positioning of the short pin, and finally insert the pins on both sides of the ladder into the sleeve completely, and lock and fix them with the flange structure to complete the installation. The entire hoisting process is convenient and simple to construct, and there is no need to accurately sleeve on the outside of the pile body during hoisting like a ring-shaped ladder, so the construction efficiency is greatly improved, and it is not easy to collide with the pile body, avoiding collision deformation; the ladder adopts a straight ladder structure, which is convenient to transport and not easy to deform. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of a super-large offshore wind power monopile foundation of the present invention.

[0015] Figure 2 It is a schematic diagram of the first ladder structure and the second ladder structure of the present invention.

[0016] Figure 3 It is a schematic diagram of the outer platform structure of the present invention. DETAILED DESCRIPTION

[0017] In order to elaborate on the technical scheme adopted by the present invention to achieve the predetermined technical purpose, the technical scheme 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 only partial embodiments of the present invention, rather than all embodiments, and the technical means or technical features in the embodiments of the present invention can be replaced without paying creative work. The present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0018] like Figure 1 As shown, an ultra-large offshore wind power single pile foundation of the present invention comprises a pile body 1, an outer platform structure 2, a first ladder structure 3 and a second ladder structure 4, the outer platform structure 2 is arranged on the outer side of the upper end of the pile body 1, and the first ladder structure 3 and the second ladder structure 4 are arranged on both sides of the pile body 1.

[0019] like Figure 2As shown, the first ladder structure 3 and the second ladder structure 4 respectively include an upper ladder 5, an upper ladder cage 6, a lower ladder 7, a berthing component 8 and a resting platform 9, the lower ladder 7 is fixed to the lower end of the outer side of the pile body 1, the upper ladder 5 is fixed to the upper end of the outer side of the pile body 1 and the lower end of the upper ladder 5 is connected to the upper end of the lower ladder 7 but not in contact, the upper ladder cage 6 is fixed to the outer side of the upper ladder 5, the berthing component 8 is fixed to the outer side of the lower ladder 7, the resting platform 9 is located at the connection between the lower end of the upper ladder 5 and the upper end of the lower ladder 7 and the resting platform 9 is fixed to the upper end of the lower ladder 7. During installation, the lower ladder 7 is partially in the sea water, and the maintenance personnel can choose the first ladder structure 3 or the second ladder structure 4 as the berthing position according to the direction of the sea water waves. The berthing component 8 uses two vertical thickened tubular structural members to protect the lower ladder 7. The upper ladder cage 6 protects the climbing staff of the upper ladder 5, and the resting platform 9 provides a place for the staff to pause and rest.

[0020] A first connecting member group is provided on one side of the inner side surface of the lower ladder 7, and a second connecting member group is provided on the other side of the inner side surface of the lower ladder 7. The first connecting member group and the second connecting member group respectively include a first latch 10, a second latch 11 and a first flange 12 which are arranged in sequence from bottom to top. A first sleeve 13 matching the first latch 10 is provided on the pile body 1, a second sleeve 14 matching the second latch 11 is provided on the pile body 1, and a second flange 15 matching the first flange 12 is provided on the pile body 1.

[0021] The length of the first latch pin 10 in the first connector group is greater than the length of the first latch pin 10 in the second connector group, and the length of the second latch pin 11 in the first connector group is greater than the length of the second latch pin 11 in the second connector group. During installation, the lower ladder 7 is vertically lifted by a lifting equipment, and then the first pin 10 and the second pin 11 in the first connecting member group are aligned with the first sleeve 13 and the second sleeve 14 on the pile body 1, and then the first pin 10 and the second pin 11 in the first connecting member group are partially inserted into the first sleeve 13 and the second sleeve 14. At this time, the lower ladder 7 is rotated with the first pin 10 and the second pin 11 in the first connecting member group as the rotation axis until the first pin 10 and the second pin 11 in the second connecting member group are aligned with the first sleeve 13 and the second sleeve 14 on the pile body 1, and then the lower ladder 7 continues to descend until the first pin 10 and the second pin 11 in the first connecting member group and the second connecting member group are completely inserted into the first sleeve 13 and the second sleeve 14, and the first flange 12 and the second flange 15 are locked and fixed by bolts to complete the installation of the lower ladder 7.

[0022] A third connecting member group is provided on one side of the inner side surface of the upper ladder 5, and a fourth connecting member group is provided on the other side of the inner side surface of the upper ladder 5. The third connecting member group and the fourth connecting member group respectively include a third flange 16 and a third latch 17 which are arranged in sequence from bottom to top. A fourth flange 18 matching the third flange 16 is provided on the pile body 1, and a third sleeve 19 matching the third latch 17 is provided on the pile body 1.

[0023] The length of the third latch 17 in the third connector group is greater than the length of the third latch 17 in the fourth connector group. During installation, the upper ladder 5 is vertically hoisted by a lifting device, and then the third latch 17 in the third connector group is aligned with the third sleeve 19 on the pile body 1, and then the third latch 17 in the third connector group is partially inserted into the third sleeve 19. At this time, the upper ladder 5 is rotated with the third latch 17 in the third connector group as the rotation axis until the third latch 17 in the fourth connector group is aligned with the third sleeve 19 on the pile body 1, and then the upper ladder 7 is further lowered until the third latch 17 in the third connector group and the fourth connector group are completely inserted into the third sleeve 19, and the third flange 16 and the fourth flange 18 are locked and fixed by bolts to complete the installation of the upper ladder 5.

[0024] A reference electrode 20 and an auxiliary anode 21 are provided at the lower end of the mooring component 8, a wiring hole opened in the vertical direction is opened in the vertical structural member on one side of the mooring component 8, and a wiring pipe 22 is provided on the side of the upper ladder 5. The cables of the reference electrode 20 and the auxiliary anode 21 are passed upward along the wiring holes of the mooring component 8 to the wiring pipe 22 of the upper ladder 5, and then connected to the power supply equipment of the outer platform structure 2 from the upper end of the wiring pipe 22.

[0025] like Figure 3 As shown, the outer platform structure 2 includes an outer platform structure body 23, an outer platform ring beam 24, an outer platform handrail 25 and a plurality of outer platform diagonal braces 26. The outer platform ring beam 24 is fixed on the inner side of the outer platform structure body 23. The outer platform handrail 25 is vertically fixed on the outer edge of the outer platform structure body 23. A diagonal brace support 27 corresponding to the plurality of outer platform diagonal braces 26 is arranged on the outer side of the upper end of the pile body 1. The outer platform diagonal braces 26 are arranged obliquely. The upper ends of the outer platform diagonal braces 26 are fixedly connected to the lower sides of the outer platform structure body 23. The lower ends of the outer platform diagonal braces 26 are detachably fixed on the diagonal brace support 27. The plurality of outer platform diagonal braces 26 are evenly spaced and distributed along the circumferential direction of the pile body 1.

[0026] An outer platform entrance is arranged on the outer platform structure body 23 corresponding to the upper ends of the first ladder structure 3 and the second ladder structure 4, and an outer platform ladder 27 is arranged on the upper end of the outer platform entrance. The lower end of the outer platform ladder 27 is connected to the upper end of the upper ladder 5 but does not touch it.

[0027] The outer platform ring beam 24 is composed of a plurality of arc-shaped beams connected end to end, and the ends of two adjacent arc-shaped beams are fixedly connected by connecting pieces.

[0028] The present invention provides an ultra-large offshore wind power single pile foundation. The ladder adopts a straight ladder structure on both sides and is installed in upper and lower sections. The weight of a single ladder structure is greatly reduced. The ladder and the pile body are installed by adopting a structure that cooperates with a pin and a flange, and the pins on both sides are one long and one short. When hoisting, just align the long pin, and then use the long pin partially inserted into the sleeve as a fulcrum to rotate to complete the positioning of the short pin. Finally, the pins on both sides of the ladder are completely inserted into the sleeve and locked and fixed by the flange structure to complete the installation. The entire hoisting process is convenient and simple to construct. There is no need to accurately sleeve the outside of the pile body during hoisting like a ring-shaped winding ladder, so the construction efficiency is greatly improved, and it is not easy to collide with the pile body, so as to avoid collision deformation. The ladder adopts a straight ladder structure, which is convenient to transport and not easy to deform.

[0029] The above is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent replacement and improvement made to the above embodiments without departing from the content of the technical solution of the present invention, based on the technical essence of the present invention, within the spirit and principles of the present invention, still fall within the protection scope of the technical solution of the present invention.

Claims

1. A super-large offshore wind power monopile foundation, characterized by: It comprises a pile body, an outer platform structure, a first ladder structure and a second ladder structure, the outer platform structure is arranged on the outer side of the upper end of the pile body, the first ladder structure and the second ladder structure are arranged on both sides of the pile body, the first ladder structure and the second ladder structure respectively comprise an upper ladder, an upper ladder guard cage, a lower ladder, a berthing component and a rest platform, the lower ladder is fixed to the lower end of the outer side of the pile body, the upper ladder is fixed to the upper end of the outer side of the pile body and the lower end of the upper ladder is connected to the upper end of the lower ladder but not in contact, the upper ladder guard cage is fixed to the outer side of the upper ladder, the berthing component is fixed to the outer side of the lower ladder, the rest platform is located at the connection between the lower end of the upper ladder and the upper end of the lower ladder and the rest platform is fixed to the upper end of the lower ladder.

2. The ultra-large offshore wind power monopile foundation according to claim 1, characterized in that: A first connecting member group is arranged on one side of the inner side surface of the lower ladder, and a second connecting member group is arranged on the other side of the inner side surface of the lower ladder. The first connecting member group and the second connecting member group respectively include a first latch, a second latch and a first flange which are arranged in sequence from bottom to top. A first sleeve which matches the first latch is arranged on the pile body, a second sleeve which matches the second latch is arranged on the pile body, and a second flange which matches the first flange is arranged on the pile body.

3. The ultra-large offshore wind power monopile foundation according to claim 2, characterized in that: The length of the first latch in the first connector group is greater than the length of the first latch in the second connector group, and the length of the second latch in the first connector group is greater than the length of the second latch in the second connector group.

4. The ultra-large offshore wind power monopile foundation according to claim 1, characterized in that: A third connecting member group is arranged on one side of the inner side surface of the upper ladder, and a fourth connecting member group is arranged on the other side of the inner side surface of the upper ladder. The third connecting member group and the fourth connecting member group respectively include a third flange and a third latch which are arranged in sequence from bottom to top. A fourth flange matching the third flange is arranged on the pile body, and a third sleeve matching the third latch is arranged on the pile body.

5. The super-large offshore wind power monopile foundation according to claim 4, characterized in that: The length of the third latch pin in the third connector group is greater than the length of the third latch pin in the fourth connector group.

6. The super-large offshore wind power monopile foundation according to claim 1, characterized in that: A reference electrode and an auxiliary anode are provided at the lower end of the mooring component, a wire laying hole opened in the vertical direction is opened in the vertical structural member on one side of the mooring component, and a wire laying pipe is provided on the side of the upper ladder. The cables of the reference electrode and the auxiliary anode are passed upward along the wire laying hole of the mooring component to the wire laying pipe of the upper ladder, and then connected to the power supply equipment of the outer platform structure from the upper end of the wire laying pipe.

7. The super-large offshore wind power monopile foundation according to claim 1, characterized in that: The outer platform structure comprises an outer platform structure body, an outer platform ring beam, an outer platform handrail and a plurality of outer platform diagonal braces. The outer platform ring beam is fixed on the inner side of the outer platform structure body. The outer platform handrail is vertically fixed on the outer edge of the outer platform structure body. A diagonal brace support corresponding to the plurality of outer platform diagonal braces is arranged on the outer side of the upper end of the pile body. The outer platform diagonal brace is inclined. The upper end of the outer platform diagonal brace is fixedly connected to the lower side of the outer platform structure body. The lower end of the outer platform diagonal brace is detachably fixed on the diagonal brace support. The plurality of outer platform diagonal braces are equally spaced and distributed along the circumferential direction of the pile body.

8. The super-large offshore wind power monopile foundation according to claim 7, characterized in that: An outer platform entrance is arranged on the outer platform structure body at the upper ends corresponding to the first ladder structure and the second ladder structure, an outer platform ladder is arranged at the upper end of the outer platform entrance, and the lower end of the outer platform ladder is connected to the upper end of the upper ladder but not in contact.

9. The super-large offshore wind power monopile foundation according to claim 7, characterized in that: The outer platform ring beam is composed of a plurality of arc-shaped beams connected end to end, and the ends of two adjacent arc-shaped beams are fixedly connected by connecting pieces.

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