WO2022199477A1 - 海上浮式风电组合式半潜平台基础 - Google Patents

海上浮式风电组合式半潜平台基础 Download PDF

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Publication number
WO2022199477A1
WO2022199477A1 PCT/CN2022/081659 CN2022081659W WO2022199477A1 WO 2022199477 A1 WO2022199477 A1 WO 2022199477A1 CN 2022081659 W CN2022081659 W CN 2022081659W WO 2022199477 A1 WO2022199477 A1 WO 2022199477A1
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Prior art keywords
support
lower support
wind power
column
submersible platform
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PCT/CN2022/081659
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English (en)
French (fr)
Inventor
陈巍旻
潘徐杰
王革
刘富斌
方智超
周志清
张文禄
方自彪
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惠生（南通）重工有限公司
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Priority to US18/026,597 priority Critical patent/US20230331355A1/en
Publication of WO2022199477A1 publication Critical patent/WO2022199477A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
    • B63B1/10—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls
    • B63B1/107—Semi-submersibles; Small waterline area multiple hull vessels and the like, e.g. SWATH
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
    • B63B73/30—Moving or transporting modules or hull blocks to assembly sites, e.g. by rolling, lifting or floating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
    • B63B73/40—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms characterised by joining methods
    • B63B73/43—Welding, e.g. laser welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B75/00—Building or assembling floating offshore structures, e.g. semi-submersible platforms, SPAR platforms or wind turbine platforms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
    • B63B1/10—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls
    • B63B1/12—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly
    • B63B2001/128—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly comprising underwater connectors between the hulls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B63B2035/4433—Floating structures carrying electric power plants
    • B63B2035/446—Floating structures carrying electric power plants for converting wind energy into electric energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/727—Offshore wind turbines
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the invention relates to an offshore wind power foundation, in particular to an offshore floating wind power semi-submersible platform foundation.
  • the technical problem to be solved by the present invention is to realize the manufacture and launching of the semi-submersible platform without large docks and slideways.
  • the offshore floating wind power combined semi-submersible platform foundation of the present invention includes at least three uprights, the uprights enclose a polygonal structure, and adjacent uprights are connected by an upper support and a lower support, the uprights It consists of an upper cylinder and a lower cylinder, the upper cylinder and the lower cylinder are coaxially arranged, a support block is arranged on the upper part of the upper cylinder, the upper support rests on the support block, and the lower part of the upper cylinder A lower support connection part is provided, and the lower support connection part is connected with the lower support.
  • the front end of the support block is provided with a bump, and the upper support rests on the bump.
  • the front end of the lower support connection part is beyond the outer edge of the lower cylinder, and a support plate is provided on the lower side of the front end of the lower support connection part. rest on a pallet.
  • the uprights are enclosed in a triangular or quadrangular structure.
  • the lower support connecting portion is arranged on the upper top surface of the lower cylinder.
  • the upper support and the lower support are both strip beams.
  • the support plate is provided with a hollowed-out opening, and the hollowed-out opening is arranged at the lower support connection part and the lower support connection part.
  • the construction of the upper support, the lower support and the vertical column is completed at the production site, and two support blocks are welded on the same horizontal line at the upper part of the vertical column, and a 60-degree angle is formed between the support blocks.
  • two lower support connection parts are welded on the same horizontal line at the lower part of the column, the angle between the lower support connection parts is consistent with the angle between the support blocks, the support block and the lower support connection part correspond up and down;
  • the front end is fixed with a horizontal pallet by a ring buckle; the built column, upper support and lower support are transported to the pier near the wind farm by a transport ship, and the two columns are put into the water by a crane or crawler crane at the pier, and the distance between the columns is controlled.
  • the relative distance between the two ends of the lower support is placed on the pallets of the two columns and welded to the lower support connection, and the two ends of the upper support are placed on the support block and welded to the column; then use a crane to fix it.
  • the crawler crane puts a column into the water, drags it to the corresponding position by the tugboat, places the two ends of the lower support on the corresponding pallets of the two columns and welds them with the lower support connection, and the upper support two The ends are placed on the corresponding support blocks and welded and fixed with the uprights, and the above steps are repeated to form the uprights into a polygonal structure.
  • the uprights when the number of uprights is even, the uprights may be connected two by two first, and then the connected uprights are connected through the upper support and the lower support.
  • This scheme proposes the concept of a combined semi-submersible platform. Using the characteristics of the combination, only medium-sized modules need to be built in the production site, without occupying a dock, slipway, or wharf, and it can also be completed in areas with low manufacturing costs. After the manufacturing of the components to be assembled at the production site, a large number of components to be assembled can be transported to the wharf close to the offshore wind farm by ordinary transport ships. The on-site wharf does not need a dock/slip, and only a crane with ordinary lifting capacity can complete the semi-submersible The combination. Through the implementation of this scheme, the large-scale construction of the offshore semi-submersible floating foundation for high-power wind turbines becomes possible.
  • Figure 1 Schematic diagram of the basic structure of the three-column combined semi-submersible corrosion platform.
  • FIG. 1 Schematic diagram of the basic structure of the four-column combined semi-submersible corrosion platform.
  • FIG. 3 is a schematic diagram of the structure of a column in which the assembly aids are arranged at an angle of 60 degrees.
  • the offshore floating wind power combined semi-submersible platform foundation of the present invention is mainly composed of a column 1 and a support structure.
  • the four-column type is mainly composed of four columns 1, four lower supports 2 and four upper supports 3
  • the three-column type is mainly composed of three columns 1, three lower supports 2 and three upper supports 3 compositions.
  • Column 1, lower support 2, upper support 3, and assembly aids are constructed at the manufacturing site, which occupies less space, facilitates transportation, and can be constructed in areas with lower labor costs.
  • the upright column 1 is composed of an upper column body 11 and a lower column body 12 , the cross section of the upper column body may be circular or polygonal, and the cross section of the lower column body may be circular or polygonal.
  • the cross-sectional area of the upper cylinder is smaller than the cross-sectional area of the lower cylinder.
  • the upper cylinder 11 is welded and fixed on the lower cylinder 12, and the two are arranged coaxially. Both the upper cylinder 11 and the lower cylinder 12 are preferably cylinders. body structure.
  • the upper support 3 is a strip-shaped structural beam, and the cross section of the upper support is circular or polygonal. In order to facilitate construction, the upper support 3 generally uses a strip-shaped structural beam of rectangular cross-section.
  • the lower support 2 is a strip-shaped structural beam, and the cross section of the lower support is circular or polygonal. In order to facilitate construction, the lower support 2 generally uses a strip-shaped structural beam of rectangular cross-section.
  • the lower support connecting part 21 is matched with the lower support 2 in cross section, and the lower support connecting part 21 is welded in advance at the connection between the upper column 11 and the lower column 12. Since each column 1 is connected with the two lower supports 2 after the combination, the column 1 Two lower support connection parts 21 are welded to the upper part.
  • the angle between the two lower support connecting parts 21 welded with the connection between the upper column 11 and the lower column 12 is 90°
  • the angle between the two lower support connecting parts 21 welded with the junction of the upper cylinder 11 and the lower cylinder 12 is 60°.
  • a support block 4 is welded, and the front end of the support block 4 is provided with a bump 41 .
  • the support block 4 is used to temporarily place the upper support 3 for welding between the upper support 3 and the upper cylinder 11 .
  • the bump 41 is used to support the lower side part of the upper support end slightly higher than the surface of the support block 4. When it is close to the side surface of the upper cylinder 11, there is sufficient space to make the contact seam between the upper support 3 and the side surface of the upper cylinder 11. exposed for soldering.
  • the lower support connection part 21 is pre-welded at the connection between the lower part of the upper cylinder 11 and the lower cylinder 12, the specification of the lower support connection part 21 is matched with the lower support 2, the front end of the lower support connection part 21 is beyond the side of the lower cylinder 12, and the lower support
  • the front end of the connection portion 21 is provided with a ring buckle 22 , and the ring buckle 22 fixes the support plate 23 on the lower side of the lower support connection portion 21 .
  • the part of the pallet protrudes beyond the lower support connecting part 21 for supporting the lower support 2 .
  • the support plate 23 is provided with a hollowed-out opening 24, and the hollowed-out opening 24 is arranged at the connection between the lower support connecting portion 21 and the lower support 2 of the workpiece for welding.
  • the basic implementation method of the offshore floating wind power combined semi-submersible platform with a three-column or four-column structure is as follows:
  • the upper support 3 and the lower support 2 are rectangular slender beams with hollow structures inside to reduce weight.
  • the upper column 11 and the lower column 12 are welded into a complete main body.
  • the upper column 11 and the lower column 12 are hollow structures inside, and the interior can be partitioned to facilitate the injection of water to adjust the posture.
  • the upper part of the upper column 11 is welded with two support blocks 4, and the included angle between the support blocks 4 is kept more than 60 degrees. When the three-column 1 form is adopted, the included angle is 60 degrees, and when the four-column 1 form is adopted, the included angle is 90 degrees.
  • the included angle is 108 degrees, and so on.
  • the support block 4 is used to overlap the upper support 3.
  • the lower support connecting part 21 is pre-welded, and the lower support connecting part 21 needs to be welded after welding.
  • the lower column body 12 is protruded, and the lower support connecting portion 21 is provided with a ring buckle 22 and a support plate 23 for the lower support 2 to overlap.
  • first repeat step 3 first complete the two groups of two-by-two connected columns 1, and vertically arrange the two groups of two-by-two connected columns in the water.
  • control the angle and distance between the two groups of connected columns set the two groups of connected columns in parallel and maintain a proper distance, and then pass the upper support 3 and the lower support 2, with the help of pre-built support blocks 4 and the lower support connecting part 21, connect the two groups of two-by-two connected columns.
  • the semi-submersible platform foundation in the form of four columns has been constructed on site B.

Abstract

一种海上浮式风电组合式半潜平台基础，包括至少三根立柱（1），立柱（1）围成多边形结构。相邻立柱（1）之间通过上部支撑（3）和下部支撑（2）进行连接。立柱（1）由上柱体（11）和下柱体（12）组成。上柱体（11）和下柱体（12）同轴设置。上柱体（11）上部设置有支撑块（4），上部支撑（3）搁置在支撑块（4）上，上柱体（11）下部设置有下支撑连接部（21），下支撑连接部（21）与下部支撑连接（2）。该海上浮式风电组合式半潜平台基础的结构形式大大降低了制造场地和组合场地的要求，为大规模异地建造提供了可能。

Description

海上浮式风电组合式半潜平台基础 技术领域
本发明涉及一种海上风电基础，尤其涉及一种海上浮式风电半潜平台基础。
背景技术
海上风电大功率化以及逐步深水化是未来发展趋势，浮式风电将逐渐成为海上风电的主流，采用半潜方式是浮式风电最可靠的基础形式。然而风机功率越来越大，为了抵御风倾力矩，半潜的尺寸也需要不断加大，这就为最终的建造的场地提出极高的要求，要么有大型的船坞，要么有重载轨道配合半潜驳下水，这两个均是稀缺资源，极大限制了浮式风电大规模快速发展。
发明内容
本发明所要解决的技术问题是在没有大型船坞和滑道的情况下实现半潜平台的制造及下水。
为了解决上述技术问题，本发明的海上浮式风电组合式半潜平台基础，包括至少三根立柱，所述立柱围成多边形结构，相邻立柱之间通过上部支撑和下部支撑进行连接，所述立柱由上柱体和下柱体组成，所述上柱体和下柱体同轴设置，所述上柱体上部设置有支撑块，所述上部支撑搁置在支撑块上，所述上柱体下部设置有下支撑连接部，所述下支撑连接部与下部支撑连接。
上述技术方案中，所述支撑块前端设置有凸块，所述上部支撑搁置在凸块上。
上述技术方案中，所述下支撑连接部前端超出下柱体外边沿，所述下支撑连接部前端下侧设置有托板，所述托板通过环扣固定在下支撑连接部前端，所述下部支撑搁置在托板上。
上述技术方案中，所述立柱围成三角形或四边形结构。
上述技术方案中，所述下支撑连接部设置在下柱体上顶面。
上述技术方案中，所述上部支撑和下部支撑均为条形梁。
上述技术方案中，所述托板上设置有镂空口，所述镂空口设置在下支撑连接部和下部支撑连接处。
本发明的海上浮式风电组合式半潜平台基础的安装方法，在生产地完成上部支撑、下部支撑和立柱的建造，在立柱上部同一水平线上焊接两个支撑块，支撑块之间形成60度以上的夹角，在立柱下部同一水平线上焊接两个下支撑连接部， 下支撑连接部之间夹角与支撑块之间夹角一致，支撑块和下支撑连接部上下对应；下支撑连接部前端通过环扣固定有水平托板；通过运输船将建造好的立柱、上部支撑和下部支撑运至风场附近码头，在码头借助吊车或履带吊将两个立柱放入水中，控制好立柱之间的相对距离将下部支撑两端放置在两个立柱的托板上并将其与下支撑连接部焊接固定，将上部支撑两端放置在支撑块上并将其与立柱焊接固定；再借助吊车或履带吊将一个立柱放入水中，通过拖轮将其拖至对应的位置，将下部支撑两端放置在两个立柱的对应托板上并将其与下支撑连接部焊接固定，将上部支撑两端放置在对应支撑块上并将其与立柱焊接固定，重复上述步骤，使立柱组成多边形结构。
上述方法中，当立柱为偶数个时，可先将立柱两两进行连接，再将连接好的立柱之间通过上部支撑和下部支撑进行连接。
本方案提出了组合式半潜平台的概念，利用组合的特性，在生产场地只需建造中型的模块，不需要占用船坞、船台、码头，并且还可以实现在制造成本低廉的地区完成制造。在生产场地完成待组合件制造后，通过普通运输船可将大量的待组合件运送至靠近海上风电场的码头，现场码头无需船坞/船台，只需普通起吊能力的吊机就可完成半潜的组合。通过本方案的实施，使得面向大功率风机的海上半潜浮式基础大规模建造成为可能。
附图说明
图1三立柱组合式半潜腐蚀平台基础结构示意图。
图2四立柱组合式半潜腐蚀平台基础结构示意图。
图3以60度角设置装配辅助件的立柱结构示意图。
具体实施方式
参见图1至图3，本发明的海上浮式风电组合式半潜平台基础，主要由立柱1与支撑结构构成，组合后的半潜平台基础优选方案是采用四柱型或三柱型两种。参见图2，四柱型主要由四个立柱1、四个下部支撑2和四个上部支撑3组成，参见图1，三柱型主要由三个立柱1、三个下部支撑2和三个上部支撑3组成。在制造场地建造立柱1、下部支撑2、上部支撑3和装配辅助件，上述部件所占用场地较少，便于运输，可以在劳动力成本较低的区域建造。
立柱1由上柱体11和下柱体12组成，上柱体的横截面可为圆型或多边形， 下柱体的横截面可为圆型或多边形。上柱体的横截面面积要小于下柱体的横截面面积，上柱体11焊接固定在下柱体12上，两者之间采用同轴设置，上柱体11和下柱体12均优选圆柱体结构。
上部支撑3为条形结构梁，上部支撑的横截面为圆型或多边形。为了方便建造，上部支撑3一般使用矩形横截面的条形结构梁。
下部支撑2为条形结构梁，下部支撑的横截面为圆型或多边形。为了方便建造，下部支撑2一般使用矩形横截面的条形结构梁。在组合前，下部支撑2需通过下支撑连接部21、环形扣22和托板23与立柱1连接固定上。下支撑连接部21与下部支撑2截面匹配，下支撑连接部21提前焊接在上柱体11与下柱体12连接处，由于组合后每个立柱1与两个下部支撑2连接，所以立柱1上焊接有两个下支撑连接部21。
当半潜平台基础结构为四柱形式时，与上柱体11与下柱体12连接处焊接的两个下支撑连接部21之间的角度为90°，当半潜平台基础结构为三柱形式时，与上柱体11与下柱体12的交接处焊接的两个下支撑连接部21之间的角度为60°。
在上柱体11上部，焊接有支撑块4，支撑块4的前端设置有凸块41。支撑块4用于临时搭放上部支撑3，用于上部支撑3与上柱体11之间的焊接。凸块41用于支持上部支撑端部下侧面部分略高于支撑块4表面，在靠近上柱体11侧边表面时，有充分的空间使得上部支撑3与上柱体11侧边表面的接触缝暴露在外以便焊接。
在上柱体11下部与下柱体12连接处预焊接好下支撑连接部21，下支撑连接部21规格与下部支撑2匹配，下支撑连接部21前端超出下柱体12侧边，下支撑连接部21前端设置有环扣22，环扣22将托板23固定在下支撑连接部21下侧边。托板的部分超出下支撑连接部21，以供支撑下部支撑2。托板23上设置有镂空口24，镂空口24设置在工件在下支撑连接部21和下部支撑2连接处，以供焊接使用。
以三柱体或四柱体结构的海上浮式风电组合式半潜平台基础实施方法如下所述：
1.在场地A建造立柱1、上部支撑3、下部支撑2，并在立柱1上安装支撑 块4和下支撑连接部21。上部支撑3和下部支撑2为矩形细长条状梁，内部采用空心结构，减轻重量。建造立柱1时将上柱体11和下柱体12焊接成完整的主体，上柱体11和下柱体12内部为空心结构，内部可进行隔断，便于注入水进行调节姿态。并且上柱体11上部焊接两个支撑块4，支撑块4之间夹角保持60度以上，采用三立柱1形式时，夹角60度，采用四立柱1形式时，夹角90度，采用五立柱形式时，夹角108度，以此类推。支撑块4用于搭接上部支撑3，在柱体的下部，也就是上柱体11与下柱体12的交接处，预先焊接好下支撑连接部21，下支撑连接部21焊接好以后要伸出下柱体12，并且下支撑连接部21安装环扣22和托板23，以供下部支撑2搭接。
2.通过运输船将建造好的立柱1、上部支撑3和下部支撑2，运送至风场附近码头，场地B；
3.在场地B的码头，借助吊车或履带吊，将两个柱体1放入水中，柱体1在自身的浮力下浮稳，在码头简单的系泊条件下，控制好两个柱体的相对距离，通过上部支撑3和下部支撑2，借助预先搭建的支撑块4和下支撑连接部21，将两个柱体1连接固定。
4.当半潜平台基础是三柱体结构时，再借助吊车/履带吊，将最后一个柱体1放入水中，通过拖轮将该柱体1拖至恰当的位置，通过上部支撑3和下部支撑2，借助预先搭建的支撑块4和下支撑连接部21，将该柱体1与之前已完成搭建的两个柱体1连接，至此三柱体结构的半潜平台基础在场地B建造完毕。
5.当半潜平台基础是四柱体结构时，首先重复步骤3，先完成两组两两连接的柱体1，将两组两两连接好的柱体，垂直布置于水中，通过简单的系泊，控制好两组连接好柱体之间的角度以及距离，将两组连接好柱体之间平行设置并保持适当距离，然后通过上部支撑3和下部支撑2，借助预先搭建的的支撑块4和下支撑连接部21，将这两组两两连接好的柱体连接，至此四柱形式的半潜平台基础在场地B建造完毕。

Claims (8)

  1. 海上浮式风电组合式半潜平台基础，包括至少三根立柱，所述立柱围成多边形结构，相邻立柱之间通过上部支撑和下部支撑进行连接，其特征在于：所述立柱由上柱体和下柱体组成，所述上柱体和下柱体同轴设置，所述上柱体上部设置有支撑块，所述上部支撑搁置在支撑块上，所述上柱体下部设置有下支撑连接部，所述下支撑连接部与下部支撑连接。
  2. 如权利要求1所述海上浮式风电组合式半潜平台基础，其特征在于：所述支撑块前端设置有凸块，所述上部支撑搁置在凸块上。
  3. 如权利要求1所述海上浮式风电组合式半潜平台基础，其特征在于：所述下支撑连接部前端超出下柱体外边沿，所述下支撑连接部前端下侧设置有托板，所述托板通过环扣固定在下支撑连接部前端，所述下部支撑搁置在托板上。
  4. 如权利要求1所述海上浮式风电组合式半潜平台基础，其特征在于：所述立柱围成三角形或四边形结构。
  5. 如权利要求1所述海上浮式风电组合式半潜平台基础，其特征在于：所述下支撑连接部设置在下柱体上顶面。
  6. 如权利要求1所述海上浮式风电组合式半潜平台基础，其特征在于：所述上部支撑和下部支撑均为条形梁。
  7. 如权利要求1所述海上浮式风电组合式半潜平台基础，其特征在于：所述上柱体、下柱体、上部支撑和下部支撑内部为空心结构。
  8. 如权利要求3所述海上浮式风电组合式半潜平台基础，其特征在于：所述托板上设置有镂空口，所述镂空口设置在下支撑连接部和下部支撑连接处。
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