CN219061899U - Novel supporting structure applied to offshore wind power tower - Google Patents

Novel supporting structure applied to offshore wind power tower Download PDF

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CN219061899U
CN219061899U CN202222793583.0U CN202222793583U CN219061899U CN 219061899 U CN219061899 U CN 219061899U CN 202222793583 U CN202222793583 U CN 202222793583U CN 219061899 U CN219061899 U CN 219061899U
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foundation
section
fiber reinforced
reinforced composite
concrete
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戴靠山
丁志斌
熊川楠
黄小瀚
孙弋明
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Sichuan University
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Sichuan University
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    • 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

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Abstract

The utility model belongs to the technical field of wind power, and particularly relates to a novel supporting structure applied to an offshore wind power tower. The novel supporting structure for offshore wind power comprises a foundation section and a steel tower section from bottom to top, or comprises the foundation section, a lattice or frame type supporting section and the steel tower section, wherein the foundation section, the lattice or frame type supporting section adopts a steel structure, or any one of a steel pipe concrete composite member, a fiber reinforced composite material-steel pipe concrete composite member and a fiber reinforced composite material-hollow interlayer steel pipe concrete composite member. The novel supporting structure applied to the offshore wind power tower improves the service performance of the offshore wind power tower in a seawater environment, and has the advantages of prolonging the service life of the wind power tower, being convenient to install and saving cost on the premise of meeting various normal functions of the wind power tower.

Description

Novel supporting structure applied to offshore wind power tower
Technical Field
The utility model belongs to the technical field of wind power, and particularly relates to a novel supporting structure applied to an offshore wind power tower.
Background
Wind power support structures have been more studied and have a variety of different structural styles. Fiber reinforced composites have found more mature application in fan blades. At present, the constraint effect of the fiber reinforced composite material on concrete and concrete filled steel tube is fully researched, and a large number of mechanical models are proposed. But these studies have focused mainly on the bridge, building construction fields, and less on wind power support structures. In the field of marine structures, seawater and sea sand concrete itself has a certain research, and the performance of the seawater and sea sand concrete is generally close to that of common concrete, but the corrosion action of seawater and sea sand is considered, so that the fiber reinforced composite material has wide application prospect in the field due to the natural corrosion resistance.
At present, the fiber reinforced composite material pipe concrete core column-steel pipe concrete combined column has no engineering application, but has been subjected to individual experimental study. Feng et al (2015) proposed that the FRP pipe concrete core column was embedded in rectangular steel pipe concrete and a short column axial compression test was performed, and the compression bearing capacity of the core column portion was greatly improved due to the constraint effect. Because the fiber reinforced composite material is corrosion resistant, the concrete in the core column can be seawater sea sand concrete. Li and Zhao (2020) performs an axial compression test on a short column of a tubular column of a circular stainless steel tube concrete column embedded fiber reinforced composite material and provides a calculation method. The application of fiber reinforced composites in pile foundations has also been studied, mainly including fiber reinforced composite pultruded FRP pipe confined concrete and FRP pipe confined concrete-filled steel tube (Guades et al 2012, abyaneh et al 2020). Fiber reinforced composite pipe concrete piles have also found particular application, for example, fiber reinforced composite pipe concrete piles of 625 mm diameter have been successfully used in the foundation of highway bridges (Fam et al 2003).
The pure fiber reinforced composite material structure has the advantages of small dead weight, high tensile strength, corrosion resistance, fatigue resistance and the like, but has the limitations of high manufacturing cost, low compressive strength, difficult design and construction of node structures and the like. The pure steel pipe structure has poor effect in the seawater corrosion environment and high cost.
Disclosure of Invention
The utility model aims to provide a novel support structure applied to an offshore wind power tower, which can improve the stress performance of a system on one hand and can also improve the corrosion resistance of the system in an ocean environment on the other hand.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the novel supporting structure for offshore wind power comprises a foundation section and a steel tower barrel from bottom to top in sequence, or comprises the foundation section, a lattice type or frame type supporting section and the steel tower barrel; the foundation section, the lattice type or the frame type supporting section adopts a steel structure, or any one of a steel pipe concrete combined member, a fiber reinforced composite material-steel pipe concrete combined member and a fiber reinforced composite material-hollow interlayer steel pipe concrete combined member.
Preferably, the steel pipe-concrete composite member comprises, in order from inside to outside: sea water sea sand concrete solid cylinder and stainless steel pipe, or common concrete and steel pipe.
Preferably, the fiber reinforced composite-concrete composite member comprises, in order from inside to outside: sea water sea sand concrete solid cylinder or common concrete and fiber reinforced composite material pipe.
Preferably, the fiber reinforced composite-hollow sandwich steel pipe concrete composite member sequentially comprises from inside to outside: sea water sea sand concrete solid cylinder, fiber reinforced composite material pipe, common concrete and steel pipe.
Preferably, the fiber reinforced composite material-concrete filled steel tube composite member sequentially comprises, from inside to outside: sea water sea sand concrete solid cylinder, stainless steel tube and fiber reinforced composite cloth; or common concrete, steel pipes and fiber reinforced composite cloth; the fiber reinforced composite cloth is wrapped outside the steel pipe or the stainless steel pipe.
Preferably, in the supporting structure consisting of a foundation section and a steel tower section, the foundation section is any one of a single pile foundation, a pile group foundation, a jacket foundation, a floating foundation, a semi-submersible foundation or a tension leg foundation.
Preferably, in the support structure consisting of a foundation section, a lattice type or frame type support section and a steel tower section, the foundation section is any one of a pile group foundation, a floating foundation, a semi-submersible foundation or a tension leg foundation.
The novel supporting structure applied to the offshore wind power tower improves the service performance of the offshore wind power tower in a seawater environment, and has the advantages of prolonging the service life of the wind power tower, being convenient to install and saving cost on the premise of meeting various normal functions of the wind power tower.
Drawings
Fig. 1 (1) -fig. 1 (6) are schematic diagrams of various specific structural forms of a foundation section in a novel support structure applied to an offshore wind turbine tower, wherein: FIG. 1 (1) is a pile group foundation; FIG. 1 (2) is a single pile foundation; FIG. 1 (3) is a floating foundation; FIG. 1 (4) semi-submersible foundation; FIG. 1 (5) is a tension leg foundation; FIG. 1 (6) jacket foundation;
FIG. 2 is a schematic view of a vane assembly and steel tower;
FIG. 3 is a schematic view of the structure of a lattice support;
FIG. 4 is a schematic cross-sectional view of two different steel pipe-fiber reinforced composite-concrete composite components; (1) one of the combination members; (2) another composite member;
FIG. 5 is a schematic cross-sectional view of two different steel pipe-concrete composite members; (1) one of the combination members; (2) another composite member;
FIG. 6 is a schematic cross-sectional view of two different fiber reinforced composite-concrete composite components; (1) one of the combination members; (2) another composite member;
FIG. 7 is a schematic cross-sectional view of a fiber reinforced composite-hollow sandwich concrete filled steel tube composite member;
FIG. 8 is a schematic illustration of one preferred embodiment of the novel support structure of the present utility model applied to an offshore wind tower;
FIG. 9 is another preferred embodiment of the novel support structure provided by the utility model for use in offshore wind towers;
FIG. 10 is another preferred embodiment of the novel support structure provided by the utility model for use in offshore wind towers;
FIG. 11 is a schematic illustration of another preferred embodiment of the novel support structure of the present utility model applied to an offshore wind tower;
in the figure, 001: sea water sea sand concrete; 002: a fiber reinforced composite tube; 003: ordinary concrete; 004: a steel pipe; 005: stainless steel tube; 006: fiber reinforced composite cloth; 007: pile group foundation; 008: lattice type support; 009 is a steel tower; 010: single pile foundation, 011: a floating foundation; 012: a semi-submersible foundation; 013: a tension leg foundation; 014: a jacket foundation.
Detailed Description
The following detailed description of the embodiments of the present utility model is provided in connection with the accompanying drawings, which are intended to be illustrative of only one of the preferred embodiments of the novel support structure of the present utility model, and not to be taken as limiting the scope of the utility model, since any modifications, equivalents, and improvements made within the spirit and principles of the utility model should be included within the scope of the utility model.
The utility model provides a novel supporting structure applied to an offshore wind power tower, which can be divided into three parts, namely a basic section, a lattice or frame type supporting section and a steel tower section along the height direction; or a foundation section and a steel tower section.
In the supporting structure consisting of three parts, namely a foundation section, a lattice type or frame type supporting section and a steel tower section, the foundation section can adopt any one of a pile group foundation 007, a floating foundation 011, a semi-submersible foundation 012 or a tension leg foundation 013.
In the supporting structure consisting of two parts of the foundation section and the steel tower section, the foundation section can adopt any one of a single pile foundation 010, a pile group foundation 007, a jacket foundation 014, a floating foundation 011, a semi-submersible foundation 012 or a tension leg foundation 013.
In some embodiments of the present utility model, the foundation section, lattice or frame type support section may employ a steel pipe-fiber reinforced composite-concrete composite member as shown in fig. 4, which is, in order from the inside to the outside: seawater sea sand concrete 001, stainless steel tube 005, fiber reinforced composite cloth 006, as shown in fig. 4 (1); or plain concrete 003, steel pipes 004, fiber reinforced composite cloth 006, as shown in fig. 4 (2).
In some embodiments of the present utility model, the foundation section, lattice or frame type support section may employ a steel pipe-concrete composite member as shown in fig. 5, which is sequentially from the inside to the outside: sea water sea sand concrete solid cylinder 001, stainless steel tube 005, as shown in fig. 5 (1); or ordinary concrete 003, steel pipe 004, as shown in fig. 5 (2).
In some embodiments of the utility model, the foundation section, lattice or frame type support section may employ a fiber reinforced composite-concrete composite member as shown in fig. 6, which in turn, from inside to outside: sea water sea sand concrete solid cylinder 001, fiber reinforced composite material pipe 002, as shown in fig. 6 (1); or plain concrete 003, a fiber reinforced composite pipe 002, as shown in fig. 6 (2).
In some embodiments of the present utility model, the foundation section, lattice or frame type support section may employ a fiber reinforced composite-hollow sandwich steel pipe concrete composite member as shown in fig. 7, which is in turn from inside to outside: a seawater sea sand concrete solid cylinder 001, a fiber reinforced composite material pipe 002, common concrete 003 and a steel pipe 004.
In some embodiments of the utility model, the combination of base and lattice or frame support sections may take the same form or may take different forms.
Wherein, the seawater sea sand concrete solid cylinder 001 adopts seawater sea sand as concrete raw material, which can save transportation cost, save fresh water resource and protect ecological environment.
The fiber reinforced composite material has the characteristics of excellent corrosion resistance, high strength-weight ratio, easy construction and the like, and can solve the problem of corrosion of steel by combining the fiber reinforced composite material serving as a reinforcing material with seawater sea sand concrete instead of steel. The fiber reinforced composite pipe 002 and the fiber reinforced composite cloth 006 may be Carbon Fiber (CFRP), glass Fiber (GFRP) or Aramid Fiber (AFRP), and in further embodiments, composite fibers may be used to improve performance and reduce cost.
Embodiment 1 as shown in fig. 8, a preferred embodiment of the present utility model is shown. In this embodiment, the support structure includes a lower pile foundation 007, a middle lattice support 008, an upper steel tower 009, and a blade assembly. Wherein, pile group foundation 007 adopts the solid section of thick bamboo 001 of sea water sea sand concrete and the composite construction that fiber reinforcement combined material pipe 002 constitutes. The lattice support 008 adopts a combined member composed of an inner layer seawater sea sand concrete solid cylinder 001, a fiber reinforced composite material pipe 002, an outer layer common concrete 003 and a steel pipe 004.
Wherein, the combined member that sea water sea sand concrete solid tube 001 and fiber reinforced composite material pipe 002 constitute is prefabricated by the mill, after the pile sinking, is connected with the bottom of lattice formula support 008 through the conversion connecting piece.
The fiber reinforced composite material pipe 002, the common concrete 003 and the steel pipe 004 can be prefabricated by factories, the framework of the lattice type support 008 is firstly built by prefabricated components, and the cast-in-place seawater sea sand concrete solid cylinder 001 is reproduced. The prefabricated mode can be adopted, so that the construction quality and the convenience of construction are further ensured. The components are welded and connected through steel pipes 004.
Embodiment 2 is another preferred embodiment of the present utility model. The supporting structure in this embodiment has the same basic structure as that of embodiment 1, except that the pile group foundation 007 adopts a composite member formed by fully wrapping the seawater sea sand concrete solid cylinder 001 with the fiber reinforced composite material cloth 006, and can adopt a composite wrapping form of fully wrapping the bottom layer and restraining the outer layer by straps, so as to improve the brittle failure characteristic of the seawater sea sand concrete column restrained by the fiber reinforced composite material.
Embodiment 3 as shown in fig. 9, a preferred embodiment of the present utility model is shown. The support structure in this embodiment is the same as that of embodiment 1, except that a floating foundation 011 is used instead of the pile group foundation 007 in this embodiment. In other embodiments, semi-submersible foundation 012, tension leg foundation 013 may be used in place of pile foundation 007. In this embodiment, the floating foundation 011 is a composite member composed of a sea water sea sand concrete solid cylinder 001 and a stainless steel pipe 005.
Embodiment 4 as shown in fig. 10, another preferred embodiment of the present utility model is shown. In this embodiment, the support structure includes a lower mono-pile foundation 010 and an upper steel tower 009 and blade assembly. Wherein, the single pile foundation 010 adopts a combined member formed by a sea water sea sand concrete solid cylinder 001 and a fiber reinforced composite material pipe 002 or a combined member formed by common concrete 003 and a steel pipe 004.
Embodiment 5 as shown in fig. 11, another preferred embodiment of the present utility model is shown. In this embodiment, the support structure includes a lower jacket foundation 014 and an upper steel tower 009 and blade assembly. Wherein, the lattice structure of jacket basis 014 upper portion adopts the solid section of thick bamboo 001 of inlayer sea water sea sand concrete, fiber reinforced composite material pipe 002, outer ordinary concrete 003, steel pipe 004 constitution's combined member, and the pillar of jacket basis 014 lower part adopts the combined member that ordinary concrete 003, steel pipe 004 constitute.
Embodiment 6 is another preferred embodiment of the present utility model. The support structure in this embodiment includes a lower semi-submersible 012 and an upper steel tower 009 and blade assembly. Wherein, the semi-submerged foundation 012 adopts a combined member composed of an inner layer seawater sea sand concrete solid cylinder 001, a fiber reinforced composite material pipe 002, an outer layer common concrete 003 and a steel pipe 004, or adopts a combined member composed of common concrete 003 and a steel pipe 004.
Embodiment 7 is another preferred embodiment of the present utility model. The support structure in this embodiment includes a lower tension leg foundation 013 and an upper steel tower 009 and blade assembly. The tension leg type foundation 013 adopts a combined member composed of an inner layer seawater sea sand concrete solid cylinder 001, a fiber reinforced composite material pipe 002, an outer layer common concrete 003 and a steel pipe 004, or adopts a combined member composed of common concrete 003 and a steel pipe 004.
Embodiment 8 is another preferred embodiment of the present utility model. The support structure in this embodiment includes a lower floating foundation 011 and an upper steel tower 009 and blade assembly. Wherein, the semi-submerged foundation 012 adopts a combined member composed of an inner layer seawater sea sand concrete solid cylinder 001, a fiber reinforced composite material pipe 002, an outer layer common concrete 003 and a steel pipe 004, or adopts a combined member composed of common concrete 003 and a steel pipe 004.
The utility model provides a novel supporting structure applied to an offshore wind power tower, which has the following working principle: when the combined member is pressed, the fiber reinforced composite material is arranged in the circumferential direction of the sea water sea sand concrete column as transverse constraint, so that the ultimate strength and the deformability of the member can be greatly improved. Along with the increasing compression deformation of the seawater sea sand concrete shaft, the steel pipe layer also starts to play a lateral constraint role, and the strength and the deformability of the seawater sea sand concrete solid cylinder are further enhanced. The presence of the steel tube layer prevents brittle failure of the composite structure when the composite member is in tension.
While the present utility model has been particularly shown and described with reference to exemplary examples thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present utility model as defined by the following claims.

Claims (3)

1. Be applied to novel bearing structure of marine wind power tower comprises basic section, steel tower section of thick bamboo section from bottom to top in proper order, perhaps comprises basic section, lattice or frame-type support section and steel tower section of thick bamboo section, its characterized in that: the foundation section, the lattice type or the frame type supporting section adopts any one of a fiber reinforced composite material-concrete combined member, a fiber reinforced composite material-steel pipe concrete combined member and a fiber reinforced composite material-hollow interlayer steel pipe concrete combined member;
the fiber reinforced composite material-concrete composite member sequentially comprises the following components from inside to outside: sea water sea sand concrete solid cylinder or common concrete, and fiber reinforced composite material pipe;
the fiber reinforced composite material-hollow sandwich steel pipe concrete composite member sequentially comprises from inside to outside: sea water sea sand concrete solid cylinder, fiber reinforced composite material pipe, common concrete and steel pipe;
the fiber reinforced composite material-concrete filled steel tube composite member sequentially comprises from inside to outside: sea water sea sand concrete solid cylinder, stainless steel tube and fiber reinforced composite cloth; or common concrete, steel pipes and fiber reinforced composite cloth; the fiber reinforced composite cloth is wrapped outside the steel pipe or the stainless steel pipe.
2. The novel support structure applied to an offshore wind tower according to claim 1, wherein: in the supporting structure consisting of a foundation section and a steel tower section, the foundation section is any one of a single pile foundation, a pile group foundation, a jacket foundation, a floating foundation, a semi-submersible foundation or a tension leg foundation.
3. The novel support structure applied to an offshore wind tower according to claim 1, wherein: in the supporting structure consisting of a foundation section, a lattice type or frame type supporting section and a steel tower section, the foundation section is any one of a pile group foundation, a floating foundation, a semi-submersible foundation or a tension leg foundation.
CN202222793583.0U 2022-10-24 2022-10-24 Novel supporting structure applied to offshore wind power tower Active CN219061899U (en)

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Application Number Priority Date Filing Date Title
CN202222793583.0U CN219061899U (en) 2022-10-24 2022-10-24 Novel supporting structure applied to offshore wind power tower

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202222793583.0U CN219061899U (en) 2022-10-24 2022-10-24 Novel supporting structure applied to offshore wind power tower

Publications (1)

Publication Number Publication Date
CN219061899U true CN219061899U (en) 2023-05-23

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