An offshore wind power monopile berthing component connection structure and construction method thereof

Abstract

The present invention relates to the technical field of offshore wind power equipment, and in particular to an offshore wind power single pile mooring component connection structure and a construction method thereof; the mooring component body adopts a split type, and more than one supporting structure is connected to the side of the single pile foundation body, the width of the supporting structure gradually increases from top to bottom, and a sleeve corresponding to the supporting structure is arranged on the side of the split type mooring component body, so that when the sleeve is sleeved with the corresponding supporting structure from top to bottom, the inner wall of the sleeve and the outer wall of the supporting structure are tightly transitionally matched and connected through the gravity of the mooring component body itself, the construction efficiency is high, the installation is convenient, and the problem of cumbersome installation of conventional split type mooring components and certain gaps in the connection is solved, and the connection structure is stable and will not shake, has excellent bearing capacity, and uses less steel.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore wind power equipment, and in particular to an offshore wind power single pile berthing component connection structure and a construction method thereof. Background Art

[0002] In recent years, the offshore wind power industry has ushered in the best opportunity and achieved leapfrog development, and the corresponding wind turbine support foundation structure technology has also been greatly improved.

[0003] Common offshore wind power foundation types can be divided into gravity foundation, single pile foundation, multi-column foundation, suction foundation, etc. Among them, the single pile foundation generally refers to a single steel pipe pile foundation, which has a clear force analysis, simple structure, fast construction speed, good economy, and its burial depth is determined by the water depth and geological conditions. The single pile foundation has been applied to sea areas with a water depth of 0 to 40m, and the single unit capacity of wind turbines is as high as 8MW and above. According to statistics, more than 75% of the offshore wind turbine foundations in the world currently use single pile foundations.

[0004] At present, the berthing of single pile foundation is divided into integral cage type and split type. The integral cage type integrates the berthing structure, external platform, cable pipe and other peripheral auxiliary components into a whole. It is easy to construct and has high installation efficiency. At the same time, the overall bearing performance is good. It is the most commonly used type in China. However, with the increase of water depth, the shortcomings of the integral cage type become more and more obvious. First, the amount of steel used is large, the welding process is more, and the processing and manufacturing are troublesome. At the same time, the overall height is high, the construction and hoisting are inconvenient, and the overall cost is high. Therefore, in deep waters, split auxiliary components including berthing structures appear. However, the conventional split berthing structure generally uses cylindrical sleeve plug-in at the lower connection points, and the upper end uses flange connection. There is a certain gap in the lower cylindrical sleeve plug-in, which is not conducive to force. The upper flange connection sometimes has installation difficulties due to processing and manufacturing errors. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an offshore wind power single pile berthing component connection structure and a construction method thereof, so that the berthing component has better bearing performance, less steel consumption, and is more convenient and quick to install than the traditional integral cage type and conventional split type.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] An offshore wind power single-pile mooring component connection structure comprises a single-pile foundation body and a split-type mooring component body, wherein the side of the single-pile foundation body is installed with more than one supporting structure, and the width of the supporting structure gradually increases from top to bottom; the side of the split-type mooring component body is connected with a sleeve corresponding to the position of the supporting structure, and the inner wall of the sleeve is transitionally matched with the outer wall of the supporting structure.

[0008] The present invention also relates to a construction method for an offshore wind power monopile berthing component connection structure, comprising the following steps:

[0009] Step 1: manufacturing a monopile foundation body and one or more supporting structures connected to the monopile foundation body, manufacturing a split berthing component body and one or more sleeves connected to the split berthing component body, and drilling bolt holes on the side of a supporting structure located at the top;

[0010] Step 2: Carry out pile sinking construction on the monopile foundation in a specific sea area;

[0011] Step 3: hoist the split berthing component body, align the sleeve connected to the split berthing component body with the corresponding supporting structure, and sleeve the supporting structure from top to bottom to make the sleeve and the corresponding supporting structure transitionally matched;

[0012] Step 4: Thread the bolts into the bolt holes provided on the side of the uppermost support structure to limit the axial displacement of the correspondingly connected sleeve.

[0013] The beneficial effects of the present invention are as follows: in the offshore wind power single pile mooring component connection structure provided by the present invention, the mooring component body adopts a split type, and more than one supporting structure is connected to the side of the single pile foundation body, the width of the supporting structure gradually increases from top to bottom, and a sleeve corresponding to the supporting structure is arranged on the side of the split mooring component body, so that when the sleeve is sleeved with the corresponding supporting structure from top to bottom, the inner wall of the sleeve and the outer wall of the supporting structure are tightly transitioned and connected through the gravity of the mooring component body itself, the construction efficiency is high, and the installation is convenient, which solves the problem of cumbersome installation of conventional split mooring components and certain gaps in the connection, and the connection structure is stable, will not shake, has excellent bearing capacity, and uses less steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of an offshore wind power monopile berthing component connection structure in which a single pile foundation body and a split berthing component body are separated from each other in accordance with Embodiment 6 of the present invention;

[0015] Figure 2 This is a structural schematic diagram of a single pile foundation body and a split-type mooring component body of an offshore wind power single pile mooring component connection structure in a connected state according to Embodiment 6 of the present invention;

[0016] Description of labels:

[0017] 1. Monopile foundation body; 2. Support structure; 3. Split berthing component body; 4. Sleeve; 5. Bolt hole. DETAILED DESCRIPTION

[0018] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0019] The most critical concept of the present invention is that the side of the single pile foundation body is connected to more than one supporting structure, the width of the supporting structure gradually increases from top to bottom, and sleeves corresponding to the supporting structures are arranged on the side of the split berthing component body, so that when the sleeves are sleeved with the corresponding supporting structures from top to bottom, the inner wall of the sleeve and the outer wall of the supporting structure are tightly transitionally connected through the gravity of the berthing component body itself.

[0020] Please refer to Figure 1 as well as Figure 2 The present invention relates to an offshore wind power monopile mooring component connection structure, comprising a monopile foundation body 1 and a split mooring component body 3, wherein one or more supporting structures 2 are installed on the side of the monopile foundation body 1, and the width of the supporting structure 2 gradually increases from top to bottom; the side of the split mooring component body 3 is connected with a sleeve 4 corresponding to the position of the supporting structure 2, and the inner wall of the sleeve 4 is transitionally matched with the outer wall of the supporting structure 2.

[0021] In the above-mentioned offshore wind power single pile mooring component connection structure, the mooring component body adopts a split type, by connecting more than one supporting structure 2 to the side of the single pile foundation body 1, the width of the supporting structure 2 gradually increases from top to bottom, and a sleeve 4 corresponding to the supporting structure 2 is arranged on the side of the split mooring component body 3, so that when the sleeve 4 is sleeved with the corresponding supporting structure 2 from top to bottom, the inner wall of the sleeve 4 and the outer wall of the supporting structure 2 are tightly transitioned and connected through the gravity of the mooring component body itself, with high construction efficiency and convenient installation, which solves the problems of cumbersome installation of conventional split mooring components and certain gaps in the connection, and the connection structure is stable, will not shake, has excellent bearing capacity, and uses less steel.

[0022] Furthermore, in the above-mentioned offshore wind power monopile berthing component connection structure, the support structure 2 is in the shape of a truncated cone, and the axis of the truncated cone is parallel to the axis of the monopile foundation body 1.

[0023] Furthermore, in the above-mentioned offshore wind power monopile berthing component connection structure, the support structure 2 is in the shape of a cone, and the axis of the cone is parallel to the axis of the monopile foundation body 1.

[0024] Furthermore, in the above-mentioned offshore wind power monopile berthing component connection structure, the support structure 2 is in the shape of a regular polygonal pyramid, and the axis of the regular polygonal pyramid is parallel to the axis of the monopile body.

[0025] Furthermore, in the above-mentioned offshore wind power monopile berthing component connection structure, the support structure 2 is in the shape of a regular polygonal pyramid, and the axis of the regular polygonal pyramid is parallel to the axis of the monopile body.

[0026] Furthermore, in the above-mentioned offshore wind power monopile berthing component connection structure, the material of the supporting structure 2 is steel or UHPC, and the material of the sleeve 4 is steel or UHPC.

[0027] It can be seen from the above description that the material of the support structure 2 and the sleeve 4 can be steel, UHPC or a composite structure of steel and UHPC.

[0028] Furthermore, in the above-mentioned offshore wind power single pile berthing component connection structure, the number of the supporting structures 2 is more than 2, and the more than 2 supporting structures 2 are distributed up and down, and the side of the supporting structure 2 located at the top is provided with a bolt hole 5, so that after the supporting structure 2 located at the top is transitionally matched with the corresponding sleeve 4, the axial movement of the sleeve 4 is limited by the threaded connection between the bolt and the bolt hole 5.

[0029] A construction method for an offshore wind power monopile berthing component connection structure comprises the following steps:

[0030] Step 1: manufacturing a monopile foundation body 1 and one or more supporting structures 2 connected to the monopile foundation body 1, manufacturing a split berthing component body 3 and one or more sleeves 4 connected to the split berthing component body 3, and drilling bolt holes 5 on the side of the uppermost supporting structure 2;

[0031] Step 2: performing pile sinking construction on the monopile foundation body 1 in a specific sea area;

[0032] Step 3: hoist the split berthing component body 3, align the sleeve 4 connected to the split berthing component body 3 with the corresponding supporting structure 2, and sleeve the supporting structure 2 from top to bottom, so that the sleeve 4 and the corresponding supporting structure 2 are transitionally matched;

[0033] Step 4: Thread the bolts into the bolt holes 5 provided on the side of the uppermost support structure 2 to limit the axial displacement of the correspondingly connected sleeve 4.

[0034] Example 1

[0035] An offshore wind power monopile berthing component connection structure comprises a monopile foundation body 1 and a split berthing component body 3, wherein one or more supporting structures 2 are installed on the side of the monopile foundation body 1, and the width of the supporting structure 2 gradually increases from top to bottom; a sleeve 4 corresponding to the position of the supporting structure 2 is connected to the side of the split berthing component body 3, and the inner wall of the sleeve 4 is transitionally matched with the outer wall of the supporting structure 2. The shape of the supporting structure 2 is a regular polygonal pyramid, and the axis of the regular polygonal pyramid is parallel to the axis of the monopile body.

[0036] Example 2

[0037] An offshore wind power monopile berthing component connection structure as described in Example 1, wherein the support structure 2 is in the shape of a truncated cone, and the axis of the truncated cone is parallel to the axis of the monopile foundation body 1.

[0038] Example 3

[0039] An offshore wind power monopile berthing component connection structure as described in Example 1, wherein the support structure 2 is in the shape of a cone, and the axis of the cone is parallel to the axis of the monopile foundation body 1.

[0040] Example 4

[0041] An offshore wind power monopile berthing component connection structure as described in Example 1, wherein the support structure 2 is in the shape of a regular polygonal pyramid, and the axis of the regular polygonal pyramid is parallel to the axis of the monopile body.

[0042] Example 5

[0043] An offshore wind power monopile berthing component connection structure as described in Example 1, wherein the material of the supporting structure 2 is steel or UHPC, and the material of the sleeve 4 is steel or UHPC.

[0044] Example 6

[0045] An offshore wind power single pile berthing component connection structure as described in Example 1, wherein the number of the support structures 2 is more than 2, and the more than 2 support structures 2 are distributed up and down, and the side of the support structure 2 located at the top is provided with a bolt hole 5, so that after the support structure 2 located at the top is transitionally matched with the corresponding sleeve 4, the axial movement of the sleeve 4 is limited by the threaded connection between the bolt and the bolt hole 5.

[0046] Example 7

[0047] A construction method for an offshore wind power monopile berthing component connection structure comprises the following steps:

[0048] Step 1: After accurate layout in the factory, a monopile foundation body 1 and one or more supporting structures 2 connected to the monopile foundation body 1 are manufactured, the supporting structures 2 are welded to the sides of the monopile foundation body 1, a split berthing component body 3 and one or more sleeves 4 connected to the split berthing component body 3 are manufactured, and bolt holes 5 are drilled on the side of the uppermost supporting structure 2;

[0049] Step 2: On-site construction is also related to determining the location of the single pile foundation body 1, and sinking the single pile foundation body 1 in a specific sea area;

[0050] Step 3: hoist the split berthing component body 3, align the sleeve 4 connected to the split berthing component body 3 with the corresponding supporting structure 2, and slowly sleeve the supporting structure 2 from top to bottom, so that the sleeve 4 and the corresponding supporting structure 2 are transitionally matched. After the sleeve is completed, the sleeve will be very tight under the action of its own weight because the upper part is small and the lower part is not large;

[0051] Step 4: Thread the high-strength bolts into the bolt holes 5 provided on the side of the uppermost support structure 2 to limit the axial displacement (upward movement) of the correspondingly connected sleeve 4.

[0052] To sum up, in the offshore wind power single pile mooring component connection structure provided by the present invention, the mooring component body adopts a split type, and more than one supporting structure is connected to the side of the single pile foundation body, the width of the supporting structure gradually increases from top to bottom, and a sleeve corresponding to the supporting structure is arranged on the side of the split mooring component body, so that when the sleeve is sleeved with the corresponding supporting structure from top to bottom, the inner wall of the sleeve and the outer wall of the supporting structure are tightly transitioned and connected through the gravity of the mooring component body itself, the construction efficiency is high, and the installation is convenient, which solves the problem of cumbersome installation of conventional split mooring components and certain gaps in the connection, and the connection structure is stable, will not shake, has excellent bearing capacity, and uses less steel.

[0053] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An offshore wind power monopile berthing component connection structure, characterized in that: It comprises a monopile foundation body and a split-type berthing component body, wherein the side of the monopile foundation body is equipped with more than one supporting structure, and the width of the supporting structure gradually increases from top to bottom; the side of the split-type berthing component body is connected with a sleeve corresponding to the position of the supporting structure, and the inner wall of the sleeve is transitionally matched with the outer wall of the supporting structure; The support structure is in the shape of a regular polygonal pyramid or a regular polygonal pyramid, and the axis of the regular polygonal pyramid or the regular polygonal pyramid is parallel to the axis of the single pile foundation body; The number of the supporting structures is more than 2, and the more than 2 supporting structures are distributed up and down. The side of the supporting structure located at the top is provided with a bolt hole, so that after the supporting structure located at the top is transitionally matched with the corresponding sleeve, the axial movement of the sleeve is limited by the threaded connection between the bolt and the bolt hole.

2. The offshore wind power monopile berthing component connection structure according to claim 1, characterized in that: The support structure is made of steel or UHPC, and the sleeve is made of steel or UHPC.

3. The construction method of the offshore wind power monopile berthing component connection structure according to any one of claims 1 to 2, characterized in that: The following steps are involved: Step 1: manufacturing a monopile foundation body and one or more supporting structures connected to the monopile foundation body, manufacturing a split berthing component body and one or more sleeves connected to the split berthing component body, and drilling bolt holes on the side of a supporting structure located at the top; Step 2: Carry out pile sinking construction on the monopile foundation in a specific sea area; Step 3: hoist the split berthing component body, align the sleeve connected to the split berthing component body with the corresponding supporting structure, and sleeve the supporting structure from top to bottom to make the sleeve and the corresponding supporting structure transitionally matched; Step 4: Thread the bolts into the bolt holes provided on the side of the uppermost support structure to limit the axial displacement of the correspondingly connected sleeve.

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