KR101659783B1 - Hybrid type concrete foundation of offshore wind turbine using composite of concrete and steel sleevee and fabrication method thereof - Google Patents

Hybrid type concrete foundation of offshore wind turbine using composite of concrete and steel sleevee and fabrication method thereof Download PDF

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Publication number
KR101659783B1
KR101659783B1 KR1020150079665A KR20150079665A KR101659783B1 KR 101659783 B1 KR101659783 B1 KR 101659783B1 KR 1020150079665 A KR1020150079665 A KR 1020150079665A KR 20150079665 A KR20150079665 A KR 20150079665A KR 101659783 B1 KR101659783 B1 KR 101659783B1
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South Korea
Prior art keywords
concrete
steel
steel sleeve
offshore wind
steel pipe
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KR1020150079665A
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Korean (ko)
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김현기
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김현기
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D13/00Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/20Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
    • F03D13/22Foundations specially adapted for wind motors
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/32Foundations for special purposes
    • E02D27/42Foundations for poles, masts or chimneys
    • E02D27/425Foundations for poles, masts or chimneys specially adapted for wind motors masts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00Components
    • F05B2240/90Mounting on supporting structures or systems
    • F05B2240/91Mounting on supporting structures or systems on a stationary structure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00Components
    • F05B2240/90Mounting on supporting structures or systems
    • F05B2240/95Mounting on supporting structures or systems offshore
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/727Offshore wind turbines

Abstract

According to the present invention, disclosed is an offshore wind power generation concrete foundation. The offshore wind power generation concrete foundation according to the present invention is installed on the ocean floor to support an upper structure constituted with a nacelle for offshore wind power generation, a blade and a tower, and includes: a concrete structure comprising multiple shaft holes formed to be arranged in an equal interval on an outer circumference of a block type body; a steel pipe post installed on the ocean floor by being inserted to penetrate the shaft hole to support the concrete structure under the state of being fixed to the ocean floor; and a connector member for dissimilar materials synthesis and reinforcement which is installed to be intervened between the shaft hole and the steel pipe post to form a synthesized structure of the concrete structure and the steel pipe post. According to the same configuration, the present invention can provide a new style of offshore wind power generation concrete foundation which is optimized to secure durability easily by increasing resistance against deformation and vibration and fatigue strength and corrosion, and also is very economical by being able to reduce manufacturing costs sharply by a dissimilar material synthesis structure of the concrete and the steel.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a concrete structure, a method of manufacturing the same, and a method of manufacturing the same. 2. Description of the Related Art [

The present invention relates to an offshore wind power concrete foundation, and more particularly, to a hybrid type offshore wind power generation concrete foundation structure composed of a concrete structure and a steel pipe pile, Method and an installation method.

Today, due to the excessive use of fossil fuels, environmental pollution has become more serious and there is a growing interest in environmentally friendly renewable green energy. These renewable green energy have natural constraints and are less economical than fossil energy. However, they are attracting attention as alternative energy because they are environmentally friendly and can solve fossil energy depletion and environmental pollution problems. Among these new energy sources, wind power generation, which is a representative green energy, is already in operation in domestic as well as overseas. Due to the enlargement of wind turbine and expansion of the complex due to expansion of power generation capacity, it is transformed from onshore wind power generation to offshore wind power generation .

The offshore wind power generation system has a relatively high portion of the project cost for the offshore structure than the turbine, so that the construction and installation cost of the foundation structure accounts for at least 30% of the total cost and 50% when the depth is deepened.

The existing foundation of existing offshore wind power generation system has been mainly applied with steel structure, but the manufacturing cost is rapidly increased due to the cost increase of steel material, so it is not easy to secure economical efficiency by applying it to a large capacity turbine and deep water depth have.

Meanwhile, a gravity type concrete foundation structure capable of securing structural stability and economical efficiency has been developed and applied to solve the disadvantages of the steel foundation structure, but the existing gravity type concrete foundation structure is large and the weight of the main body is excessive The cost of transportation and installation can be rather increased and there is a disadvantage that it is not suitable for the terrain where soft ground settlement occurs.

Therefore, there is an urgent need for development and application of economical offshore wind turbine concrete foundation structures by a new type that can overcome the shortcomings of gravity type concrete foundation structures and steel foundation structures of existing offshore wind power generation systems.

SUMMARY OF THE INVENTION The present invention has been made in view of the technical background as described above and it is an object of the present invention to solve the problems of the background art described above, It can not be said to have been publicly known to the general public before.

Korean Patent Publication No. 10-1130148 Korean Patent Registration No. 10-1171201 Korean Patent Registration No. 10-1237986 Korean Patent Registration No. 10-1289821 Korean Registered Patent No. 10-1318111

The present invention has been made in order to solve the problems inherent in the conventional offshore wind turbine foundation structure as described above, and it is an object of the present invention to provide a concrete structure and a composite structure of a steel pipe pile, The present invention provides an economical new type offshore wind power generation concrete foundation structure and a manufacturing method thereof.

Another object of the present invention is to provide a new type of offshore wind turbine concrete foundation structure optimized for durability and workability by increasing the resistance against deformation, vibration, fatigue strength and corrosion by the composite structure of concrete structure and steel pipe pile and manufacturing method thereof .

Another object of the present invention is to provide a concrete structure and a steel sleeve as a connector for reinforcing a dissimilar material composite structure of a steel pipe pile as means for accomplishing the above objects.

It is still another object of the present invention to provide a method of installing a new type offshore wind power concrete foundation structure to achieve the above objects.

In order to achieve the above object, the present invention provides an offshore wind turbine concrete foundation structure, which is installed on a seabed to support an upper structure made up of an offshore wind turbine nacelle, a blade and a tower, A concrete structure having a plurality of shaft holes arranged to be arranged in a longitudinal direction; A steel pipe pile inserted into the shaft hole to support the concrete structure in a state fixed to the seabed ground and installed on the seabed ground; And a dissimilar material composite reinforcing connector member interposed between the shaft hole and the steel pipe pile to form a composite structure of the concrete structure and the steel pipe pile.

According to the present invention, the connector member comprises a steel sleeve, which is respectively installed in the shaft hole of the concrete structure so as to allow penetration of the steel pipe pile, and a grouting material filled between the steel sleeve and the steel pipe pile.

According to another aspect of the present invention, the connector member includes a steel sleeve installed in the shaft hole of the concrete structure so as to allow the steel pipe pile to be inserted therethrough, a core member provided in the concrete structure to connect the respective steel sleeves, And a grouting material filled between the steel sleeve and the steel pipe pile.

The steel sleeve includes a shear connection member having a plurality of unit studs formed to protrude from the outer circumferential surface of the cylindrical body and spaced apart from each other by a predetermined distance so as to be inserted into the concrete structure and arranged in a radial multi-layered structure.

In addition, the steel sleeve is provided with a plurality of shear connection members protruded so as to be arranged in a continuous strip shape on the inner circumferential surface so as to serve as an anti-activity wall of the concrete structure.

According to another aspect of the present invention, the concrete structure has a plurality of leg flanges projected radially to be evenly spaced on the outer periphery of the block-shaped body, and a shaft hole inserted into the leg flange to penetrate the steel pipe pile Configuration.

The steel sleeve having the above-described construction according to the present invention may be provided as a separate unit unit component and may be provided as a connector member for connecting a steel pipe-pile composite structure of an offshore wind power generation concrete foundation structure according to the present invention.

According to the present invention, the concrete structure and the steel sleeve are formed of a dissimilar material composite structure through a precast manufacturing process.

It is preferable that a stiffener such as a reinforcing bar is provided between the studs in the transverse direction and the longitudinal direction around the steel sleeve.

According to another aspect of the present invention, there is provided a method of manufacturing a concrete structure for an offshore wind power concrete concrete structure, the method comprising the steps of: forming a body of the concrete structure and installing a mold on the outer periphery of the concrete structure; Installing the steel sleeve, installing a reinforcement between the formwork and the steel sleeve, pouring concrete between the outer periphery of the concrete structure, the formwork and the steel sleeve, and removing the formwork .

In order to accomplish the above object, the present invention provides a method of installing a marine wind power concrete foundation structure, comprising the steps of: conveying a concrete structure composed of a steel sleeve by a precast manufacturing process to a sea floor, ; Placing the steel pipe pile coaxially aligned and inserted into the shaft hole of the steel sleeve provided in the concrete structure, and installing the pile in the sea bed in parallel with the piling and drilling operations; Performing a joint operation between the steel pipe pile and the reinforcing bar network; Placing a grouting material between the steel sleeve of the concrete structure and the steel pipe pile; And cutting and removing the upper projecting portion of the steel pipe pile.

According to another aspect of the present invention, there is provided a method of installing an offshore wind power concrete foundation structure according to the present invention, comprising the steps of: installing and excavating a steel pipe pile on a seabed ground at an offshore wind power generator installation location; Conveying the concrete structure having the steel sleeve synthesized by the precast manufacturing process to the sea; Placing a concrete structure on a seabed so that a steel pipe pile is coaxially aligned and inserted into a steel sleeve shaft hole of the concrete structure; Performing a joint operation between the steel pipe pile and the reinforcing bar network; Placing a grouting material between the steel sleeve of the concrete structure and the steel pipe pile; And cutting and removing the upper projecting portion of the steel pipe pile.

According to the present invention, the following effects can be obtained.

Firstly, it is possible to provide a very economical new type offshore wind turbine concrete foundation structure because the production period and cost can be greatly reduced by the composite structure of the concrete structure and the steel pipe pile.

Second, it is possible to provide a new type offshore wind turbine concrete foundation structure optimized to improve stability and durability by increasing the resistance against deformation, vibration, fatigue strength and corrosion by the composite structure of concrete structure and steel pipe pile.

Third, it is possible to provide a new type offshore wind power concrete foundation structure that can improve the accuracy of vertical control in the construction process by reducing the construction period and improving the construction efficiency by the composite structure of the concrete structure and the steel pipe pile have.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view schematically showing a basic structure for offshore wind power concrete according to the present invention. FIG.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]
BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a concrete structure for a wind power generator, and more particularly,
FIG. 4 is a schematic plan view illustrating an essential portion of a basic structure for a concrete offshore wind power generator according to the present invention shown in FIGS. 1 and 2. FIG.
FIG. 5 is a partially cutaway perspective view schematically showing a steel sleeve installed as a connector for dissimilar composite reinforcement of a basic structure for offshore wind power generation concrete according to the present invention shown in FIGS. 1 to 4. FIG.
FIG. 6 is a schematic side view showing an essential part of a basic structure of an offshore wind power generation concrete according to the present invention, which is enlarged; FIG.
FIG. 7 is a plan view schematically illustrating a manufacturing process of a basic structure for offshore wind power generation concrete according to the present invention, which is extracted from a main part according to a process sequence; FIG.
FIG. 8 is a schematic perspective view illustrating a main part of a marine wind power generation concrete foundation structure according to another embodiment of the present invention. FIG.
FIG. 9 is a schematic perspective view illustrating a concrete type of a concrete structure base of an offshore wind power generation concrete foundation structure according to the present invention.
FIGS. 10A to 10F are schematic flowcharts for explaining an installation method of a basic structure of an offshore wind power generation concrete according to the present invention by a post-piling method. FIG.
FIG. 11 is a schematic construction flowchart illustrating a method of installing a basic structure of an offshore wind power generation concrete according to the present invention by a pre-piling method. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a basic structure for an offshore wind power concrete according to the present invention will be described in detail with reference to the accompanying drawings. The following description and accompanying drawings are for the purpose of understanding the technical structure and operation of the present invention, and parts that can be easily implemented by those skilled in the art can be omitted.

1 and 2, a marine wind power concrete foundation structure 100 according to the present invention includes a concrete structure 110 for supporting an upper structure made up of an offshore wind turbine nacelle, a blade and a tower A steel pipe pile 120 for supporting the concrete structure 110 in a state fixed to the seabed ground and a connector member 130 for connecting the concrete structure 110 and the steel pipe pile 120 with the dissimilar material composite structure, .

The concrete structure 110 includes a base portion 110B radially arranged to maintain a plurality of leg flanges 111 protruding from the outer periphery of the cylindrical body, and a cone-shaped hollow portion 110C, a cylinder hollow portion 100R-1, and a ring portion 100R-2. Reference numeral 10 denotes a steel shaft to be inserted into the cylinder hollow portion 110R-1 and the ring portion 110R-2 so as to be connected to a tower of an upper structure.

A shaft hole is formed in each of the leg flanges 111 to allow the steel pipe pile 120 to pass therethrough.

The concrete structure 110 and the leg flange 111 are illustrated in the drawings as one preferred embodiment of the present invention, but the shape and arrangement quantity as shown in the drawings do not limit the present invention.

In the present invention, the concrete structure 110 shown in FIGS. 1 to 8 illustrates a configuration in which a plurality of leg flanges 111 are formed to protrude from the outer periphery of a cylindrical body, and a shaft hole is formed in the leg flanges 111 This configuration is for installing the steel pipe pile 120 more easily in the shaft hole of the leg flange 111 during the construction process.

According to another aspect of the present invention, the concrete structure 110 is formed by deforming the base portion 100B into various types of polygonal block bodies in accordance with conditions of an actual construction site, as exemplarily shown in FIG. An example can be applied. At this time, the leg flange 111 may be omitted, and the shaft holes 111h may be arranged at even intervals in the base portion 110B of the concrete structure 110. [

The concrete structure 110 is installed in a state of being fixed to a seabed ground by a pre-piling method and a post-piling method, and a detailed description thereof will be given later.

3 to 6, the connector member 130 is inserted into the shaft hole 111h of each of the leg flanges 111 of the concrete structure 110 so as to allow insertion of the steel pipe pile 120 And a grouting material 132 placed between the steel sleeve 131 and the steel pipe pile 120 to be filled therein.

The grouting material 132 is filled through a conventional underwater grouting process such as a conventional jacket pile method.

The steel sleeve 131 is provided with a plurality of studs 131S protruding from the outer circumferential surface of the cylindrical body 131A as a shear connection member.

The studs 131S are arranged in a radial multi-layer arrangement so as to maintain a constant spacing on the outer circumferential surface of the steel sleeve 131.

The stud 131S is inserted into a concrete block of the leg flange 111 and is set in a wedge shape in a precast manufacturing process of the concrete structure 110, for example. Therefore, it plays a role and function as a connecting stiffener for forming a composite material of a concrete and a steel material.

Accordingly, the stud 131S includes a protruding piece (not shown) welded to protrude to a predetermined length from the outer circumferential surface of the steel sleeve 131 as shown in the figure, and an extended head piece (Not shown).

That is, the structure of the stud 131S as described above is effective for acting as a wedge-shaped member in the concrete structure of the leg flange 111, and the illustrated shape structure does not limit the present invention, It is possible to adopt a shaped structure.

It is preferable that the stud 131S is provided in a horizontal state so that the protruding piece is substantially orthogonal to the outer peripheral surface of the steel sleeve 131, and the extended head piece is provided in a vertical state.

The studs 131S are arranged to have a regular arrangement pattern such as an integral multiple of the spacing of the reinforcing bars 133 installed in the lateral direction, for example, in order to avoid interference with the underlying structure of the reinforcing bars 133 desirable.

The steel sleeve 131 is provided with a plurality of weld beads 131B, which are formed so as to be arranged in a continuous strip shape on the inner peripheral surface and the outer peripheral surface of the steel pipe pile 120, as shear connectors. Accordingly, the weld bead 131B acts as an anti-activity wall of the concrete structure 110.

5, reference numeral 131F denotes a flange provided at the upper end and the lower end of the steel sleeve 131, respectively.

According to an aspect of the present invention, reinforcing rods 133 may be disposed between the studs 131S around the steel sleeve 131 of the concrete structure 110 as reinforcing materials in the transverse direction and the longitudinal direction. have.

The reinforcement 133 is installed as a reinforcing material on the network in the concrete structure 110 and is preferably installed to maintain the spacing in the range of 150 to 300 mm in the transverse direction depending on the diameter of the sleeve 131, .

Therefore, it is preferable that the stud 131S is installed so as to maintain an interval of 300 to 600 mm in order to avoid interference with the structure of the transverse reinforcement 133.

According to the present invention, the concrete structure 110 and the steel sleeve 131 are formed of a dissimilar material composite structure by a precast manufacturing process, and FIG. 7 is a drawing showing a configuration of a recess according to a manufacturing process thereof.

Referring to FIG. 7A, a steel mold 110D is installed to form a flange on the outer periphery of a bottom portion 110B of the concrete structure 110. As shown in FIG.

Then, a steel sleeve 131 is installed inside the steel mold 100D as shown in FIG. 7 (b).

In the next step, as shown in Fig. 7C, reinforcing bars 133 are stitched to the inside of the steel formwork 100D with the lateral and longitudinal stiffeners.

In the next step, as shown in FIGS. 7D and 7E, the concrete 110C is cured by curing and then the steel formwork 110C is removed, so that the axial hole 111h of the leg flange 111 is removed, The concrete structure 110 made of the dissimilar material composite structure having the steel sleeve 131 can be completed.

That is, in order to construct the offshore wind power generation concrete foundation structure 100 according to the present invention, the concrete structure 110 (110) in which the steel sleeve 131 is formed on the shaft hole 111h of the leg flange 111 by the pre- And the steel shaft 110S is mounted on the ring-shaped hollow portion 110R of the concrete structure 110. The steel shaft 110S is transported in the sea state by the steel pipe pile 120, So as to be fixed.

FIG. 8 is a schematic perspective view illustrating a concrete structure and a steel sleeve according to another embodiment of the present invention.

According to the embodiment illustrated in FIG. 8, the steel sleeve 131 is constituted by a unit structure connected to each other by an arc-shaped steel support plate 131C. In this configuration, the steel material supporting plate 131C is installed as a core material in the concrete block of the body of the concrete structure 110.

That is, the concrete structure 110, the steel sleeve 131, and the steel support plate 131C are formed into a dissimilar material composite structure by a precast manufacturing process to construct the offshore wind power concrete foundation structure 100 according to the present invention And is installed in the seabed so as to be constructed as the above-described offshore wind power concrete foundation structure 100 according to the present invention. At this time, the grouting material 131 is filled through conventional conventional underwater grouting between the steel pipe pile 120 and the steel sleeve 131, which are coupled through the shaft hole of the steel sleeve 131.

FIGS. 10 and 11 are flowcharts for explaining a post-piling method and a pre-piling method for installing an offshore wind power generation concrete foundation structure according to the present invention, respectively.

Referring to FIG. 10, the method of installing the offshore wind power generation concrete foundation structure according to the present invention is as follows. First, referring to FIG. 10 (a), a steel sleeve 131 The concrete structure 110 is transported to the sea using a barge and a sea crane, and is mounted on the seabed of the offshore wind power generator installation site.

10 (b), the steel pipe pile 120 is coaxially installed in the shaft hole of the steel flange 111 of the concrete structure 110 or the steel sleeve 131 of the concrete structure 110 The piling and excavation works are performed in parallel with the alignment and insertion (S-120). At this time, since the steel sleeve 131 functions as a central axis for grasping the alignment state with the steel pipe pile 120, the verticality of the concrete structure 110 can be precisely adjusted.

Next, referring to FIG. 10C, a joint operation between the steel bar N and the steel pipe pile 120 is performed (step S-130).

Referring to FIG. 10D, a grouting material is laid between the steel sleeve 131 of the concrete structure 110 and the steel pipe pile 120 using a concrete mixer (S-140).

Referring to FIGS. 10 (e) and 10 (f), the upper projecting portion of the steel pipe pile 120 is cut and removed to complete the installation of the offshore wind power generation concrete foundation structure 100 as a next construction step.

Referring to FIG. 11, in the method of installing the basic structure for offshore wind power concrete according to the present invention, the steel pipe pile 120 is installed and excavated on the seabed ground of the installation position of the offshore wind power generator (S -110).

In the next step, the concrete structure 110 in which the steel sleeve 131 is synthesized by the precast manufacturing process is conveyed to the sea using a barge, a sea crane or the like (S-120).

The concrete structure 110 is mounted on the seabed so that the steel pipe pile 120 is coaxially aligned and inserted into the shaft hole of the steel sleeve 131 provided in the leg flange 111 of the concrete structure 110 S-130). At this time, since the steel sleeve 131 functions as a central axis for grasping the alignment state with the steel pipe pile 120, the verticality of the concrete structure 110 can be precisely adjusted.

In the next step, the joining operation between the reinforcing net N and the steel pipe pile 120 is performed (S-140).

Next, a grouting material is laid between the steel sleeve 131 of the concrete structure 110 and the steel pipe pile 120 using a remicon (S-150).

In the next construction step, the upper protrusion of the steel pipe pile 120 is cut off (S-160), and the installation of the offshore wind power generation concrete foundation 100 is completed (S-170).

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is to be understood that various modifications may be made, and such modifications are intended to fall within the scope of the appended claims.

100: Offshore wind power concrete foundation structure
110: Concrete structure
110B: Base portion of the concrete structure
110C: cone hollow part of concrete structure
110R-1: Cylinder hollow part of concrete structure
110R-2: Ring portion of concrete structure
111: Leg flange
120: Steel pipe pile
130: connector member
131: Steel sleeve
131B: weld bead (shere key)
131S: Stud (shear connector)
132: Grouting material
133: Stiffener (rebar)

Claims (23)

  1. Is installed in the seabed to support an upper structure composed of a nacelle, a blade and a tower,
    A concrete structure having a plurality of shaft holes formed so as to be evenly spaced on the outer periphery of the block-shaped body;
    A steel sleeve provided in a state of being in contact with the shaft hole by a precast manufacturing process to form the concrete structure and the dissimilar material composite structure;
    A steel pipe pile inserted into the steel sleeve in such a manner that the concrete structure is fixed to a seabed ground, And
    A grouting material disposed between the steel sleeve and the steel pipe pile at a bottom of the steel pipe so as to form a dissimilar material composite reinforcing connector member for forming the composite structure of the concrete structure, the steel sleeve and the steel pipe pile; Wherein the foundation structure comprises at least one of the following.
  2. delete
  3. The method according to claim 1,
    Wherein the steel sleeve comprises a unit unit connected to each other by an arc-shaped steel support plate installed as a core member in the concrete structure.
  4. The method according to claim 1 or 3,
    Wherein the steel sleeve comprises a shear connector made of a plurality of unit studs formed to protrude from an outer circumferential surface of a cylindrical body and arranged in a radial multi-layer arrangement structure so as to be inserted into the concrete structure, Foundation structure.
  5. The method according to claim 1 or 3,
    Wherein the steel sleeve is provided with a plurality of shear connectors formed so as to be arranged in a continuous strip shape on the inner circumferential surface so as to serve as an anti-activity wall of the concrete structure.
  6. The method according to claim 1 or 3,
    Wherein a reinforcing material is provided between the studs in the transverse and longitudinal directions around the steel sleeve.
  7. delete
  8. The method according to claim 1,
    Wherein the concrete structure has a plurality of leg flanges projected radially to be evenly spaced on the outer periphery of the block-shaped body, and a shaft hole inserted into the leg flange so as to penetrate the steel pipe pile, structure.
  9. A steel pipe inserted through the shaft hole of the concrete structure to support a concrete structure constituting a foundation structure for supporting an upper structure made up of an offshore wind power generation nacelle, a blade and a tower, A connector member for connecting a pile and a concrete structure to a composite structure,
    And a plurality of studs protruding from the outer circumferential surface of the cylindrical body in a radial multi-layer arrangement structure and inserted into the concrete structure, as a shear connection member,
    Wherein the cylindrical body is formed as a unit structure unit connected by a steel support plate. ≪ RTI ID = 0.0 > 20. < / RTI >
  10. 10. The method of claim 9,
    Wherein a plurality of shear connectors are arranged on the inner circumferential surface of the cylindrical body so as to be arranged in a continuous strip shape protruding to act as an anti-activity wall of the concrete structure. .
  11. delete
  12. delete
  13. delete
  14. delete
  15. delete
  16. delete
  17. delete
  18. delete
  19. It is installed in the seabed to support an upper structure consisting of a nacelle, a blade and a tower for offshore wind power generation.
    A steel sleeve is installed so as to be inscribed in a central shaft hole of a plurality of leg flanges provided to radially protrude from the outer periphery of the concrete block body during a precast production process,
    Wherein the steel sleeve is formed as a unit structure connected in multiple arrangements by at least two steel support plates and the steel support plate is installed as a core material in a concrete concrete block body. Concrete base of foundation supporting structure.
  20. delete
  21. 20. The method of claim 19,
    Wherein the steel sleeve is provided with a shear connector having a plurality of unit studs formed to protrude from the outer circumferential surface of the cylindrical body so as to be spaced apart from the concrete base so as to be set in a state of being infiltrated into the concrete base, Concrete Bases of Base Support Structures for Offshore Wind Power Generation.
  22. 20. The method of claim 19,
    Characterized in that the steel sleeve is provided with a plurality of shear keys on the inner circumferential surface to act as an anti-active wall of a steel pile engaged to be inserted into the hollow.
  23. 23. The method of claim 22,
    Wherein the shear key comprises a plurality of weld beads protruding from the inner circumferential surface of the steel sleeve so as to be arranged in a continuous strip shape.
KR1020150079665A 2015-06-05 2015-06-05 Hybrid type concrete foundation of offshore wind turbine using composite of concrete and steel sleevee and fabrication method thereof KR101659783B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106013212A (en) * 2016-07-25 2016-10-12 福建永福电力设计股份有限公司 Offshore wind turbine tower foundation structure and installation method
CN106760870A (en) * 2016-12-12 2017-05-31 国网山东省电力公司电力科学研究院 A kind of power transmission tower column foot anti-corrosion method
CN109295994A (en) * 2018-11-06 2019-02-01 重庆大学 A kind of full assembled composite structure wind-power tower basis

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