US10385533B2 - Offshore wind power foundation with improved water-tightness and construction method thereof - Google Patents

Offshore wind power foundation with improved water-tightness and construction method thereof Download PDF

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Publication number
US10385533B2
US10385533B2 US15/912,573 US201815912573A US10385533B2 US 10385533 B2 US10385533 B2 US 10385533B2 US 201815912573 A US201815912573 A US 201815912573A US 10385533 B2 US10385533 B2 US 10385533B2
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United States
Prior art keywords
precast
elastic spring
leg
pile
housing
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Expired - Fee Related
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US15/912,573
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US20180320335A1 (en
Inventor
Hye Kwan JEON
Gee Seung PARK
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ACE ENC Inc
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ACE ENC Inc
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Assigned to ACE ENC INC. reassignment ACE ENC INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: JEON, HYE KWAN, PARK, GEE SEUNG
Publication of US20180320335A1 publication Critical patent/US20180320335A1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/32—Foundations for special purposes
    • E02D27/42—Foundations for poles, masts or chimneys
    • E02D27/425—Foundations for poles, masts or chimneys specially adapted for wind motors masts
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/32—Foundations for special purposes
    • E02D27/52—Submerged foundations, i.e. submerged in open water
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • 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
    • F03D13/25—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors specially adapted for offshore installation
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B2017/0039—Methods for placing the offshore structure
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B2017/0056—Platforms with supporting legs
    • E02B2017/0073—Details of sea bottom engaging footing
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B2017/0091—Offshore structures for wind turbines
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00—Miscellaneous
    • E02D2600/20—Miscellaneous comprising details of connection between elements
    • 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

Definitions

  • the present invention relates to an offshore wind power foundation with improved water-tightness and a construction method thereof, and more specifically, to an offshore wind power foundation with improved water-tightness which is advantageous in constructability and quality management due to structural integrity and water-tightness required to inject a bonding material being secured when an offshore wind foundation is fixed to the seabed ground using a pile, and a construction method thereof.
  • FIG. 1A-1 and FIG. 1A-2 are respectively a perspective view and a cross-sectional view of a conventional offshore wind power generator concrete foundation structure.
  • the concrete foundation structure which is installed on the seabed ground to support an upper structure including a nacelle for an offshore wind power generator, a blade, and a tower, includes:
  • a concrete structure 10 including a leg flange 11 having a plurality of shaft holes disposed at an outer circumference of a block-type body at regular intervals;
  • a connector member 30 for dissimilar material synthesis reinforcement interposed between the shaft holes and the steel pile to form a synthesized structure of the steel pile and the concrete structure.
  • the connector member 30 includes steel sleeves 31 installed in the shaft holes to allow the steel piles to pass therethrough, and a grouting material 32 injected between the steel sleeve and the steel pile.
  • a welding bid 31 B and a stud 31 S are formed between the grouting materials 32 injected into a space between the steel sleeve and the steel pile to ensure synthesis performance.
  • FIG. 1B shows a unit for injecting the grouting material 32 of the conventional offshore wind power generator concrete foundation structure.
  • the guide pipe cap 40 including an injection hole 41 and a discharge hole 42 allows the grouting material 32 to be press-fitted into the guide pipe cap 40 and inserted into the ground under a support structure foundation A.
  • the grouting material (a bonding material) to be press-fitted into a watertight space when the conventional offshore wind power foundation is fixed to the seabed ground using a pile, but since the press-fitting is performed under water, it is practically difficult for quality control to be managed, and a technology in which both structural integration of the pile, the guide pipe cap, and the offshore wind power foundation and water-tightness are secured is required.
  • the present invention is directed to an offshore wind power foundation with improved water-tightness allowing quality control thereof to be easily managed by allowing a pile and a bonding material between a leg of the offshore wind power foundation and the pile to be processed under a water-tight condition when the offshore wind power foundation is fixed to the seabed ground using the pile, and a construction method thereof.
  • the present invention is also directed to an offshore wind power foundation with improved water-tightness allowing stability of the offshore wind power foundation to be increased by securing water-tightness and applying pre-stress to a head of a pile from a leg of the wind power foundation such that a bonding force of the offshore wind power foundation and the pile is increased, and a construction method thereof
  • a method of constructing an offshore wind power foundation with improved water-tightness includes (a) a step of providing an offshore wind power foundation ( 100 ) having a lower end passing through a leg ( 120 ) from an upper surface of the leg ( 120 ), wherein a first front expanding anchor ( 220 a ) is pre-installed at the upper surface of the leg ( 120 ) so that an upper end of the offshore wind power foundation ( 100 ) is exposed upward, (b) a step of mounting the offshore wind power foundation ( 100 ) on a seabed ground by inserting a hollow part of the leg ( 120 ) into a head of a pile ( 110 ) pre-constructed on a seabed surface and installing an elastic spring unit ( 240 ) including an elastic spring ( 241 ) having a lower end fixed to an upper surface of the finished pile, (c) a step of setting a precast cap member ( 200 ) on an upper surface of the leg ( 110 ) by allowing the first front expanding anchor (
  • a method of constructing an offshore wind power foundation with improved water-tightness includes (a) a step of providing an offshore wind power foundation ( 100 ) having a lower end passing through a leg ( 120 ) from an upper surface of the leg ( 120 ), wherein a first front expanding anchor ( 220 a ) is pre-installed at the upper surface of the leg ( 120 ) so that an upper end of the offshore wind power foundation ( 100 ) is exposed upward, (b) a step of mounting the offshore wind power foundation ( 100 ) on a seabed ground by inserting a hollow part of the leg ( 120 ) into a head of a pile ( 110 ) pre-constructed on a seabed surface and installing an elastic spring unit ( 240 ) including an elastic spring ( 241 ) having a lower end fixed to an upper surface of the finished pile, (c) a step of setting a precast cap member ( 200 ) on an upper surface of the leg ( 110 ) by allowing the first front expanding anchor (
  • FIG. 1A-1 and FIG. 1A-2 are respectively a perspective view and a cross-sectional view of a conventional offshore wind power generator concrete foundation structure
  • FIG. 1B shows an example of a grouting material injection unit of the conventional wind power generator concrete foundation structure
  • FIGS. 2A-1, 2A-2, 2A-3 and 2B are a perspective view and three extracted views of an offshore wind power foundation parts with improved water-tightness of one embodiment of the present invention.
  • FIGS. 3A to 3F are a flowchart of a construction method of the offshore wind power foundation with improved water-tightness of one embodiment of the present invention.
  • FIGS. 2A-1, 2A-2, 2A-3 and 2B are a perspective view and three extracted views of an offshore wind power foundation with improved water-tightness of one embodiment of the present invention.
  • the offshore wind power foundation 100 includes a pile 110 , a foundation 130 with a leg 120 , and a column 140 , and further includes a precast cap member 200 for injecting a bonding material 300 into an upper surface of the leg 120 .
  • the pile 110 is fixed to the seabed ground through the leg 120 of the offshore wind power foundation 100 , may use a steel pile and a concrete pile, and may support the precast cap member 200 through an elastic spring unit 240 , which will be described below, by finishing an upper surface as a horizontal surface.
  • the leg 120 has a vertical hollow shape formed at an outer circumferential surface of the foundation 130 , is a member allowing an upper end of the pile 110 to be inserted thereinto from a lower side, and is integrated with the foundation 130 .
  • the foundation 130 includes the leg 120 to be fixed to the seabed ground by the pile 110 , and the column 140 (a tower) may be installed above the foundation 130 .
  • a nacelle for an offshore wind power generator and a blade are installed at an upper end of the column 140 , and a lower end of the column 140 is integrally installed with the foundation 130 .
  • the nacelle, a blade, and the column refer to an upper structure of the offshore wind power foundation, and the foundation with the leg and the pile is referred to as a lower structure thereof.
  • the upper end of the pile 110 is integrated with the leg 120 while being inserted into the leg 120 , and thus the upper end of the pile 110 is coupled to the leg 120 using a bonding material 300 (a grouting material) under water.
  • a bonding material 300 a grouting material
  • the bonding material 300 should be injected into a space between an inner surface of the leg and the pile 110 while water-tightness is secured, and the precast cap member 200 of the present invention can sufficiently secure water-tightness and integration (the offshore wind power foundation) of the foundation 130 with the leg 120 and the pile 110 by compressing the pile 110 .
  • the precast cap member 200 includes a precast housing 210 , front expanding anchors 220 ( 220 a and 220 b ), a bonding material rotation injection port 230 , and an elastic spring unit 240 .
  • the precast housing 210 includes a housing body 211 and a flange 212 and has a hat shape, and the flange 212 is supported on an upper surface B of the leg 120 .
  • the precast housing 210 should be manufactured of a steel material, but may be manufactured of precast concrete to secure a weight thereof.
  • the front expanding anchors 220 have a difference between positions, that is, the front expanding anchors 220 are positioned at the upper surface of the leg 120 or the precast housing 210 , but the same front expanding anchors 220 are used.
  • the front expanding anchor 220 a installed at the upper surface of the leg 120 passes through the flange 212 of the precast housing 210 , and has an upper end fixed to the flange 212 of the precast housing 210 by a fastening member, such as a nut, and a front end formed as an expansion front end with an expanded diameter to be embedded in the leg 120 such that a pull-out force is efficiently resisted.
  • a fastening member such as a nut
  • the front expanding anchor 220 b installed in the precast housing passes through the housing body 211 of the precast housing 210 via a fastening port, such as a nut, and has an upper end fixed to the housing body 211 of the precast housing 210 and a front end formed as an expansion front end with an expanded diameter to be embedded in the bonding material 300 injected into the precast housing 210 to be set to be supported by the upper surface of the pile 110 .
  • a fastening port such as a nut
  • the bonding material rotation injection port 230 is inserted into an injection port 213 so that the bonding material 300 is injected along a bonding material injection direction BMI into a space between the pile 110 and the leg 120 and the lower portion of the precast housing 210 , and the injection port 213 and a discharge port 214 are formed at the housing body 211 of the precast housing 210 .
  • the bonding material 300 passes through the injection port 213 of the precast housing 210 , and the bonding material rotation injection port 230 with an open lower portion is used in the space of the injection port 213 .
  • the injection port 213 is formed as a hole passing through the housing body 211
  • the discharge port 214 is formed as a hole functioning as an observation hole through which observation is performed so that the bonding material 300 may be hermetically injected into the space.
  • the bonding material rotation injection port 230 includes an inner pipe 231 , an outer pipe 233 , and an upper fixing cap 242 .
  • the outer pipe 231 has a diameter to be inserted into the injection port 213 .
  • the bonding material 300 may not be injected when negative pressure is generated when the bonding material 300 is directly injected into the outer pipe 233 .
  • the inner pipe 231 having a rotating blade 232 formed at an outer circumferential surface thereof is inserted into the outer pipe 233 , and the bonding material 300 is rotation-injected by the rotating blade 232 as the rotating blade 232 is rotated.
  • the bonding material 300 is injected into the inner pipe 231 of the bonding material rotation injection port 230 through a separated pipe.
  • the elastic spring unit 240 may increase a bonding force of the offshore wind power foundation 100 and the pile 110 by introducing a pre-stress to the front expanding anchors 220 a and 220 b using the bonding material 300 with strength injected through the precast cap member 200 as a support to increases stability of the structure.
  • the elastic spring unit 240 includes an elastic spring 241 and the upper fixing cap 242 .
  • the precast housing 210 has a hat shape and has a through hole formed in the center of the housing body 211 so that an upper end of the elastic spring 241 is inserted through the through hole to be positioned at an upper surface of the housing body 211 by the upper fixing cap 242 .
  • the elastic spring 241 may uses a steel spring
  • the upper fixing cap 242 includes a lower plate 242 a , an upper plate fixing bolt 242 b , an upper plate 242 c , and a fixing nut 242 d that are installed above the elastic spring 241 .
  • the upper plate fixing bolt 242 b , the upper plate 242 c , and the fixing nut 242 d are integrated with the upper end of the elastic spring 241 and are fixed and attached to the housing body 211 of the precast housing 210 and the elastic spring 241 .
  • the lower plate 242 a is integrated with an upper surface of the elastic spring 241 , and the upper plate 242 c is fixed to an upper surface of the center of the lower plate 242 a and has the upper plate fixing bolt 242 b extending upward therethrough.
  • the upper plate 242 c is supported on the upper surface of the housing body 211 of the precast housing 210 .
  • the fixing nut 242 d is rotation-fastened to the upper plate fixing bolt 242 b and is configured to maintain a state in which the upper plate 242 c is pressed onto the upper surface of the housing body 211 of the precast housing 210 .
  • the bonding material 300 is injected into a space between a lower portion of the precast cap member 200 and the pile, and a space between a sleeve, which is a steel plate formed on an inner surface of the leg 120 , and the pile 110 by the bonding material rotation injection port 230 of the precast cap member 200 fixed to an upper surface of the leg 120 , and uses a grouting material.
  • the bonding material 300 is injected through the injection port by the bonding material rotation injection port 230 , and is injected using pressure and rotation.
  • FIGS. 3A to 3F are a flowchart of a construction method of the offshore wind power foundation with improved water-tightness of one embodiment of the present invention.
  • the offshore wind power foundation 100 pre-manufactured on the ground is constructed so that an upper end of the pile 110 pre-constructed at a position to be constructed using a barge and the like is inserted into the leg 120 , a tower of the offshore wind power foundation 100 extends above a sea surface, and a nacelle and blade are installed at an upper end of the tower.
  • the present invention will be described on the basis of the pile 110 , the leg 120 , the precast cap member 200 , and the bonding material 300 .
  • the front expanding anchor 220 a is pre-installed at the leg 120 of the offshore wind power foundation 100 pre-manufactured on the ground.
  • a lower end of the front expanding anchor 220 a installed at an upper surface of the leg is installed to pass through the leg from an upper surface of the leg 120 , and an upper end to the front expanding anchor 220 a is exposed upward.
  • the sleeve 121 is formed at an inner surface of a hollow part of the leg 120 , and a protrusion is further formed on the sleeve 121 such that synthetic performance with the bonding material 300 can be secured.
  • the elastic spring unit 240 is installed. That is, a lower end of the elastic spring unit 240 is set to be supported and fixed to the upper surface of the pile 110 .
  • the lower plate 242 a is integrated with an upper surface of the elastic spring 241 , the upper plate fixing bolt 242 b extending from an upper surface of the center of the lower plate 242 a passes through the upper plate 242 c , and the fixing nut 242 d is rotation-fastened to the upper plate fixing bolt 242 b.
  • the precast housing 210 of the precast cap member 200 is set on the upper surface of the leg 120 .
  • the front expanding anchor 220 a installed at an upper surface of the leg passes through the flange 212 of the precast housing 210 constituting the precast cap member 200 .
  • the front expanding anchor 220 b passes through the through hole formed at the housing body 211 of the precast housing 210 , and a front end thereof is supported at the upper surface of the pile.
  • the upper plate 242 c and the upper plate fixing bolt 242 b of the elastic spring unit 240 are inserted from a bottom of the through hole formed in the center of the housing body 211 of the precast housing 210 into the through hole, and the upper plate 242 c is set to be supported at an upper surface of the center of the housing body 211 .
  • the flange 212 of the precast housing 210 secures water-tightness of the inner space of the precast cap member 200 using a water stopping material 122 , which is not shown, on the upper surface of the leg 120 , and an uneven part with or instead of the water stopping material 122 may be formed at the upper surface of the leg and the flange 212 to improve water stopping functionality.
  • injection port 213 and the discharge port 214 are formed at the housing body 211 of the precast housing 210 .
  • the lower plate 242 a integrated with an upper end of the elastic spring 241 extends upward along an extending direction ED. That is, the upper plate fixing bolt 242 b fixed to the upper surface of the center of the lower plate 242 a extends upward by unfastening the fixing nut 242 d , and the lower plate and the elastic spring 241 extend.
  • the bonding material 300 is injected in a state in which the lower plate 242 a extends upward.
  • Water-tightness of the precast cap member 200 is secured by the water stopping material 122 , and thus the bonding material 300 may be injected without an effect of a tide and the like at a still-water level.
  • the bonding material 300 is integrated with the precast cap member 200 , the pile 110 , and the leg 120 as a grouting material and, as described above, is hermetically injected into a space between an inner surface of the leg 120 and an outer surface of the pile 110 , and a space between the precast cap member 200 and the upper surface of the pile using the bonding material rotation injection port 230 including the outer pipe 233 , the inner pipe 231 , and the upper fixing cap 242 .
  • the fixing nut 242 d is set so that the upper plate 242 c is supported on the upper surface of the center of the housing body 211 using the bonding material 300 as a support. Therefore, the front expanding anchor 220 a allowing a downwardly applied pre-stress to be introduced such that a water stopping effect (WS) is further increased.
  • a pre-stress P is also introduced to the front expanding anchor 220 b so that the offshore wind power foundation 100 and the pile 110 are efficiently compressed (increase bonding).
  • the precast cap member 200 , the leg 120 , and the pile 110 are efficiently integrated and compressed, and the injection port and the discharge port are finished.
  • the tower is installed at the offshore wind power foundation 100 , and the nacelle and the blade are mounted at the upper portion of the exposed tower so that the offshore wind power generator may be constructed.
  • a precast cap member is installed at a pile and an upper end of an offshore wind power foundation bonding part to maintain a stillwater level, and thus prevents a bonding material from being lost due to a tide.
  • the precast cap material functioning as a conventional guide pipe cap is installed to block a tide and the bonding material from coming into direct contact, and thus prevents the bonding material from being lost and prevents contamination caused by leakage of the bonding material.
  • a pre-stress is introduced to the front expanding anchor using the precast cap member as a support to increase a bonding force of the offshore wind power foundation and the pile and increase stability of a structure.
  • the elastic spring unit is installed at an upper end of the pile, a bonding material is prepared in a state in which an elastic spring installed at an upper end of the pile extends using the precast cap member as a support, and a tensile force introduced to the elastic spring unit is released when the bonding material exerts sufficient strength so that the pre-stress introduced to the offshore wind power foundation and the pile is introduced to increase a bonding force of the offshore wind power foundation and the pile and increase stability of the structure.
  • an inner pipe and outer pipe separation-type bonding material rotation injection port having a rotating blade attached to the inside of the outer pipe is installed and the bonding material is injected via the rotating blade when a bonding material is injected, thereby preventing material separation due to freefall and hermetically pouring the bonding material so that quality of the bonding material can be secured.
  • an observation port which is an injection port and a discharge port is installed at an upper portion of the precast cap member to allow a condition of the filled bonding material to be directly checked such that construction and management of the bonding material can be easy and quality of the bonding material can be secured.
  • an uneven part or a water stopping material is installed at an upper surface of the precast cap member and the offshore wind power foundation to secure water-tightness of a contact surface between the precast cap member and the offshore wind power foundation such that water-tightness can be increased.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Wind Motors (AREA)
  • Foundations (AREA)
US15/912,573 2017-05-08 2018-03-06 Offshore wind power foundation with improved water-tightness and construction method thereof Expired - Fee Related US10385533B2 (en)

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KR10-2017-0057253 2017-05-08
KR1020170057253A KR101755410B1 (ko) 2017-05-08 2017-05-08 수밀성이 증진된 해상풍력기초부 및 그 시공방법

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US20180355851A1 (en) * 2015-12-21 2018-12-13 Vestas Wind Systems A/S Method for forming a wind turbine foundation and related system for forming such a foundation

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CN109649595A (zh) * 2019-01-04 2019-04-19 上海海洋大学 用于深水浮式平台的机械与焊接组合连接节点及施工方法
KR200493823Y1 (ko) * 2019-11-13 2021-06-09 유지현 지하차도용 누수방지장치
NL2025306B1 (en) * 2020-04-08 2021-10-25 Heerema Marine Contractors Nl Devices and methods for installing piles into the ground or seabed
CN111779636B (zh) * 2020-07-13 2023-05-02 中国能源建设集团湖南火电建设有限公司 一种提高风力发电机组基础防水性能的方法
CN112112182A (zh) * 2020-08-14 2020-12-22 海洋石油工程股份有限公司 一种导管架平台
US11293407B1 (en) * 2020-10-26 2022-04-05 Dongyuan Wang Circular can-shape foundation and construction method for onshore wind turbines
CN115897675A (zh) * 2022-05-05 2023-04-04 青岛理工大学 一种气囊预加载模拟足尺静压桩沉桩过程装置及其试验方法

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