CN117657388A - Floating type foundation construction method, floating type foundation and wind generating set - Google Patents

Abstract

The floating foundation construction method comprises the steps of prefabricating a floating body, a first connecting frame and a second connecting frame in a connecting frame assembly, wherein the floating body is provided with a top wall, a bottom wall and side walls connected between the top wall and the bottom wall which are oppositely arranged along a first direction, transferring the floating body, the first connecting frame and the second connecting frame to a preset area where the floating foundation is arranged, and then connecting the floating body, the first connecting frame and the second connecting frame, so that the floating foundation is assembled on site in the preset area, and integral hoisting and transferring of the floating foundation in the prior art are avoided. The components which form the floating foundation and are arranged in a split mode are transferred to a construction site for assembly, the requirements on hoisting sites and equipment are reduced, the workload of the construction site is simplified, the construction difficulty is reduced, and the construction period is shortened.

Description

Floating type foundation construction method, floating type foundation and wind generating set

Technical Field

The application relates to the technical field of wind power generation, in particular to a floating foundation construction method, a floating foundation and a wind generating set.

Background

Wind energy is becoming more and more interesting as a clean energy source. Compared with land, the offshore wind power project has the advantages that the offshore wind power resources are more abundant, and the advantages of the offshore wind power project are more obvious.

As offshore wind turbines get farther and farther from the shore, floating wind turbines are becoming more and more interesting. The foundation in the wind generating set is used for supporting heavy structures such as a cabin, a generator, an impeller, a tower body and the like, and the foundation is required to bear large load and have good stability. In the related art, a floating foundation is usually manufactured by a manner that a steel floating platform is manufactured at a wharf, then the steel floating platform is hoisted and launched into water and transported to a construction site, so that the steel consumption is large, and the construction period and difficulty of the whole process are large.

Disclosure of Invention

In view of the above problems, the present application provides a floating foundation construction method, a floating foundation and a wind turbine generator system, wherein the floating foundation construction method is beneficial to reducing construction difficulty and shortening construction period.

In a first aspect, the present application provides a floating foundation construction method comprising the steps of:

a transferring step of transferring the floating body, the first connecting frame and the second connecting frame which are arranged in a split manner to a preset area where the floating foundation is arranged, wherein the floating body is provided with a top wall and a bottom wall which are arranged oppositely along a first direction, and a side wall connected between the top wall and the bottom wall;

And assembling, namely connecting the top walls of the two adjacent floating bodies through a first connecting frame, and connecting the side walls of the two adjacent floating bodies through a second connecting frame.

In some embodiments of the present application, the method for constructing a floating foundation includes:

placing at least two floating bodies on the water surface of a preset area;

laminating a first connecting frame on the top wall of each floating body and connecting the first connecting frame with the top wall of each floating body;

the second connecting frame is arranged between the two adjacent floating bodies and is connected with the side walls of the two adjacent floating bodies.

In the floating foundation construction method provided in some embodiments of the present application, further includes a mooring step, where the mooring step includes:

setting a fixed pile on the seabed of a preset area;

and connecting the second connecting frame to the fixed pile through an anchor chain.

In the floating foundation construction method provided by some embodiments of the present application, a first connecting hole is provided on the top wall of the floating body, and a first prestressed tendon is provided in the first connecting frame;

the step of stacking the first connection frame on the top wall of each floating body and connecting the first connection frame with the top wall of each floating body comprises the following steps:

laminating a first connecting frame on the top wall of each floating body;

the first prestressed tendons of the first connecting frame extend into and are connected with the first connecting holes on the top wall.

In the floating foundation construction method provided by some embodiments of the present application, a second connecting hole is arranged on the side wall of the floating body, and a second prestressed tendon is arranged in the second connecting frame;

the step of disposing the second connector between and connecting with the sidewalls of the adjacent two floating bodies comprises:

and a second connecting frame is arranged between two adjacent floating bodies, and a second prestressed tendon of the second connecting frame extends into and is connected with a second connecting hole on the side wall.

In some embodiments of the present application, a floating foundation construction method is provided, where a first connection frame includes a first bracket and a second bracket;

the first connecting frame is laminated on the top wall of each floating body and connected with the top wall of each floating body, and the first connecting frame further comprises:

the first bracket and the second bracket are connected with each other to form a first connecting frame.

In some embodiments of the present application, the floating foundation construction method further includes, before the transferring step:

prefabricating, namely prefabricating the floating body, the first bracket, the second bracket and the second connecting frame which are arranged separately.

In some embodiments of the present application, the prefabricating step includes:

providing a mold forming a floating body, a first bracket, a second bracket and a second connecting bracket;

And pouring concrete slurry into the floating body mould, the first support mould, the second support mould and the second connecting frame mould respectively, and solidifying to form the floating body, the first support, the second support and the second connecting frame.

In a second aspect, the present application also provides a floating foundation comprising:

the floating bodies are arranged at intervals and are provided with a top wall, a bottom wall and side walls, wherein the top wall and the bottom wall are opposite, and the side walls are connected between the top wall and the bottom wall;

the connecting frame assembly comprises a first connecting frame and a second connecting frame, wherein the first connecting frame is connected to the top wall of each floating body, the second connecting frame is connected between the side walls of two adjacent floating bodies, and the first connecting frame is used for connecting the tower body.

According to the floating foundation provided by some embodiments of the present application, the first connecting frame is formed with a through-flow opening, and the through-flow opening is polygonal.

According to the floating foundation provided by some embodiments of the present application, the first connecting frame comprises at least two first supports arranged at intervals, at least two second supports arranged at intervals and a plurality of reinforcing supports, two ends of the first supports are respectively connected to two adjacent second supports, and the reinforcing supports are connected between the first supports and the second supports to form the overflow port.

According to the floating foundation provided by some embodiments of the application, the second support is arranged along the length direction of the floating body, two ends of the second support are respectively connected to the two first supports which are overlapped on each floating body, and the tower body is connected to the first supports.

According to some embodiments of the present application, there is provided a floating foundation, wherein a cavity is provided in the floating body, and ballast material is provided at the bottom of the cavity.

According to some embodiments of the present application, the floating foundation is provided with a ballast material configured as a fluid, and the second connecting frame is provided with a connecting channel, and the connecting channel is communicated with the cavities of the two adjacent floating bodies.

According to the floating foundation provided by some embodiments of the application, the cavity is provided with the partition board, and the partition board separates the cavity to form at least two compartments which are independently arranged.

According to the floating foundation provided by some embodiments of the application, the floating body is configured into a cuboid structure, and two ends of the floating body are both provided with cone structures.

In a third aspect, some embodiments of the present application also provide a wind power generation set, comprising:

the floating foundation provided by any one of the above technical schemes;

the tower body is connected to the first connecting frame of the floating foundation;

the fixed pile is connected to the sea bottom, and the second connecting frame of the floating foundation is connected with the fixed pile through an anchor chain.

The technical scheme provided by the embodiment of the disclosure at least brings the following beneficial effects:

the utility model provides a floating foundation construction method, first link, the second link among this floating foundation construction method prefabricated body and the link subassembly, wherein the body has roof and diapire and the lateral wall of connecting between roof and diapire that set up relatively along first direction, transfer body, first link, second link to the predetermined region that sets up floating foundation after connect again, realized assembling the scene of floating foundation in predetermined region, avoided among the prior art to floating foundation's integral hoisting and transportation. The components which form the floating foundation and are arranged in a split mode are transferred to a construction site for assembly, the requirements on hoisting sites and equipment are reduced, the workload of the construction site is simplified, the construction difficulty is reduced, and the construction period is shortened.

The application provides a float formula basis, first link in this float formula basis coupling assembling is connected on the roof of each body, the second link is connected between the lateral wall of two adjacent bodies, first link is used for connecting the tower body for the tower body can be connected on the roof of body through first link, make the load that the tower body was passed along vertical direction acts on the roof of body and transmits to whole lateral wall after, but not acts on somewhere of body lateral wall, reduced the concentration of lateral wall load, can improve float formula basis atress condition.

The foregoing description is only an overview of the technical solutions of the present application, and may be implemented according to the content of the specification in order to make the technical means of the present application more clearly understood, and in order to make the above-mentioned and other objects, features and advantages of the present application more clearly understood, the following detailed description of the present application will be given.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the figures.

In the drawings:

FIG. 1 is a flow chart of a floating foundation construction method provided in some embodiments of the present application;

FIG. 2 is a flow chart of assembly steps in a floating foundation construction method provided in some embodiments of the present application;

FIG. 3 is a flow chart of mooring steps in a floating foundation construction method provided in some embodiments of the present application;

FIG. 4 is a top view of a floating body in a floating foundation construction method provided in some embodiments of the present application;

fig. 5 is a schematic view of a first tendon in a first connecting frame in a floating foundation construction method according to some embodiments of the present disclosure;

FIG. 6 is a split view of a first connector frame in a floating foundation construction method according to some embodiments of the present disclosure;

FIG. 7 is a flow chart of prefabrication steps in a floating foundation construction method provided in some embodiments of the present application;

FIG. 8 is a schematic structural view of a floating foundation provided in some embodiments of the present application;

FIG. 9 is a schematic illustration of the structure of a compartment in a floating body in a floating foundation provided in some embodiments of the present application;

fig. 10 is a schematic structural diagram of a wind turbine generator system according to some embodiments of the present disclosure.

1. A floating body; 11. a partition plate; 12. a cavity; 121. a compartment; 13. a connection hole; 14. a first prestressed tendon; 15. a top wall; 16. a bottom wall; 17. a sidewall; 21. a first connection frame; 211. a first bracket; 212. a second bracket; 213. reinforcing the support; 22. a second connecting frame; 221. a mooring structure; 23. a flow-through port; 20. a tower body; 30. fixing piles; 40. seabed. 50. And (5) an anchor chain.

Detailed Description

Embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical solutions of the present application, and thus are only examples, and are not intended to limit the scope of protection of the present application.

It should be noted that unless otherwise indicated, technical or scientific terms used in the embodiments of the present application should be given the ordinary meanings as understood by those skilled in the art to which the embodiments of the present application belong.

In the description of the embodiments of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

Furthermore, the technical terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or be integrated; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of embodiments of the present application, unless explicitly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intermediary. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Along with the increasing importance of people to the environment, clean energy is increasingly valued by people. Wind energy is of particular interest as a clean energy source. Compared with land, the offshore wind power project has the advantages that the offshore wind power resources are more abundant, and the advantages of the offshore wind power project are more obvious.

In order to better obtain full wind energy, offshore wind power generation units are more and more far away from the shore, and floating wind power generation units which can be far away from the shore are more and more interesting.

In the related art, since the foundation in the wind power generation set is to be used for supporting heavy structures such as a nacelle, a generator, an impeller, a tower body, etc., it is required to not only carry a large load but also have good stability. At present, a steel floating platform is usually manufactured at a wharf, then the steel floating platform is hoisted and launched into water and transported to a construction site in a preset area, and the applicant notices that the steel consumption is large, and the construction period and difficulty of the whole process are large in manufacturing the floating foundation.

In order to reduce the construction difficulty of the floating foundation and shorten the construction period, the applicant has found through intensive research that the floating foundation construction method can be divided into a transferring step and an assembling step, the floating body, the first connecting frame and the second connecting frame are arranged in a split mode, the floating body, the first connecting frame and the second connecting frame are connected after being transferred to a preset area, the floating foundation can be assembled on site in the preset area, the integral hoisting and transferring of the floating foundation in the prior art are avoided, the requirements on hoisting sites and equipment can be reduced, the workload of the construction site is simplified, the construction difficulty is reduced, and the construction period is shortened.

The following further describes a floating foundation construction method, a floating foundation and a technical scheme of a wind generating set provided by the specific embodiment of the application.

Some embodiments of the present application provide a floating foundation construction method, as shown in fig. 1, that includes a transferring step and an assembling step.

S100, transferring the floating body 1, the first connecting frame 21 and the second connecting frame 22 which are arranged in a separated mode to a preset area where the floating foundation is arranged, wherein the floating body 1 is provided with a top wall 15 and a bottom wall 16 which are arranged oppositely along a first direction, and a side wall 17 connected between the top wall 15 and the bottom wall 16.

S200, an assembling step, in which the top walls 15 of two adjacent floating bodies 1 are connected by a first connecting frame 21, and the side walls 17 of two adjacent floating bodies 1 are connected by a second connecting frame 22.

The floating body 1 may refer to a member floating on the water surface, which can provide buoyancy to the floating foundation, so that the floating foundation floats on the water surface. The floating body 1 may be made of a material having a density less than water so that the floating body 1 can not only float on the water surface but also provide buoyancy to the floating foundation. The floating body 1 can also be provided with a cavity 12 structure in its own structure to make its own weight less than the buoyancy force, so that the floating body 1 can not only float on the water surface, but also provide buoyancy for the floating foundation.

The first direction can refer to the vertical direction when the floating foundation is placed on the water surface, and the top wall 15 and the bottom wall 16 are oppositely arranged along the first direction, so that when the floating foundation is placed on the water surface, the top wall 15 and the bottom wall 16 are arranged at intervals along the vertical direction, the floating body 1 has a certain height, the floating body 1 can have a large enough volume, and the floating body 1 can provide larger buoyancy. The top wall 15, the bottom wall 16 and the side walls 17 may each refer to a structure of the floating body 1, which are connected to each other to form a unitary structure. The top wall 15 may refer to the wall structure that is highest when the floating foundation is placed on the water. The bottom wall 16 may refer to a wall body disposed in parallel with the top wall 15 at a spacing along the first direction. The side wall 17 may refer to a wall structure extending in the first direction and connected between the bottom wall 16 and the top wall 15.

The transferring step transfers the floating body 1, the first link 21, and the second link 22, which are separately provided, to a predetermined area where the floating foundation is provided, and may refer to separately and individually transferring the floating body 1, the first link 21, and the second link 22 to the predetermined area where the floating foundation is provided. Through setting up body 1, first link 21 and second link 22 components of a whole that can function independently for body 1, first link 21 and second link 22 can be hoisted and transported separately, and not as a monolithic structure to hoist and mount and transport, have reduced the weight of hoist and mount and transportation by a wide margin, can reduce the requirement to hoist and mount place and equipment by a wide margin, are favorable to reducing the construction degree of difficulty.

The assembling step connects the top walls 15 of two adjacent floating bodies 1 through a first connecting frame 21, and connects the side walls 17 of two adjacent floating bodies 1 through a second connecting frame 22, which may mean that the first connecting frame 21 connects the top walls 15 of two adjacent floating bodies 1, and the second connecting frame 22 connects the side walls 17 of two adjacent floating bodies 1. Through making first link 21 and second link 22 connect in the different positions of body 1 for first link 21 and second link 22 are at the direction of height interval distribution, are favorable to reducing adjacent two body 1 and rock in the direction perpendicular with first direction, can reduce the rocking of floating foundation on the horizontal plane when arranging the surface of water, thereby are favorable to reducing the possibility that floating foundation takes place to topple, have improved the security of this floating foundation.

In some embodiments, as shown in fig. 2, the assembling step includes:

s201, placing at least two floating bodies 1 on the water surface of a preset area.

S202, the first connection frame 21 is stacked on the top wall 15 of each floating body 1 and connected to the top wall 15 of each floating body 1.

And S203, the second connecting frame 22 is arranged between the two adjacent floating bodies 1 and is connected with the side walls 17 of the two adjacent floating bodies 1.

In the above-described assembling step, placing at least two floating bodies 1 on the water surface of the predetermined area may mean that when the floating bodies 1 are to be transported to the predetermined area where the floating foundation is provided, the at least two floating bodies 1 are floated on the water surface of the predetermined area, and then the connection of the first connection frame 21 and the second connection frame 22 is performed, so that the floating foundation can be installed on the water surface of the predetermined area.

Stacking the first connection frame 21 on the top wall 15 of each floating body 1 and connecting the first connection frame 21 with the top wall 15 of each floating body 1 may mean that the first connection frame 21 is firstly placed on the top walls 15 of at least two floating bodies 1 by means of hoisting or the like, so that at least two floating bodies 1 floating on the water surface bear the first connection frame 21, and then the first connection frame 21 is connected with the top walls 15 of at least two floating bodies 1 contacting with the first connection frame. In some embodiments, the first connection frame 21 may be connected to the top wall 15 of the at least two floating bodies 1 in contact therewith by a connection member, or the first connection frame 21 may be connected to the top wall 15 of the at least two floating bodies 1 in contact therewith by an adhesive substance such that the first connection frame 21 is firmly connected to the top wall 15 of the floating body 1 in contact therewith. The connection mode of the first connection frame 21 and the top wall 15 of the floating body 1 can be selected by a person skilled in the art according to practical situations, as long as the connection between the first connection frame 21 and the top wall 15 of the floating body 1 is firm.

The second connecting frame 22 is arranged between the two adjacent floating bodies 1 and connected with the side walls 17 of the two adjacent floating bodies 1, which means that the second connecting frame 22 is firstly placed between the side walls 17 of the two adjacent floating bodies 1 in a lifting mode and the like, and then the second connecting frames 22 are respectively connected with the side walls 17 of the two adjacent floating bodies 1. In some embodiments, the second connecting frame 22 may be connected to the side walls 17 of the two floating bodies 1 in contact with it by using a connecting member, or the second connecting frame 22 may be connected to the side walls 17 of the two floating bodies 1 in contact with it by using an adhesive substance, so that the second connecting frame 22 is firmly connected to the side walls 17 of the adjacent two floating bodies 1. The connection mode of the second connection frame 22 and the side wall 17 of the floating body 1 can be selected by a person skilled in the art according to practical situations, as long as the connection between the second connection frame 22 and the side wall 17 of the floating body 1 is firm.

In some embodiments, the floating foundation construction method further comprises a mooring step, as shown in fig. 3, comprising:

s301, setting a fixed pile 30 on the seabed 40 in a preset area.

S302, connecting the second connecting frame 22 to the fixed piles 30 through the anchor chain 50.

The anchor piles 30 may refer to piles for fixing the floating foundation, which are disposed at the sea floor 40 of a predetermined area, are connected to rocks of the sea floor 40, and can provide a large force to the floating foundation through the anchor chain 50, so that the floating foundation is restricted to the predetermined area.

The anchor chain 50 may refer to a chain for connecting the anchor pile 30 and the floating foundation. In some embodiments, the second connector 22 is provided with a mooring structure 221, and the anchor chain 50 is connected between the mooring structure 221 and the anchor pile 30, so as to fix the floating foundation.

The floating foundation can adopt 3-point mooring, namely, 3 fixing piles 30 and 3 anchor chains 50 are arranged corresponding to the floating foundation, and 3 mooring structures 221,3 anchor chains 50 are arranged on the second connecting frame 22 and are respectively connected with the 3 fixing piles 30 and the 3 mooring structures 221. In some embodiments, the floating foundation adopts single point mooring, namely 1 fixed pile 30 and 1 anchor chain 50 are arranged corresponding to the floating foundation, and 1 mooring structure 221 is arranged on the second connecting frame 22, so that the number of the fixed piles 30 and the anchor chains 50 on the seabed 40 is reduced, and the material cost and the construction cost are reduced.

In the above steps, the limitation of the floating foundation in a predetermined area is achieved by providing the anchor piles 30 on the sea floor 40 and connecting the second connection frame 22 to the anchor piles 30 through the anchor chain 50.

In the floating foundation construction method in some embodiments, the top wall 15 of the floating body 1 is provided with a first connecting hole 13, and the first connecting frame 21 is provided with a first prestress rib 14.

As shown in fig. 4, the first connection hole 13 may refer to a hole structure provided on the top wall 15 of the floating body 1, which is a through hole structure so that the first tendon 14 can be inserted, so that the first tendon 14 is connected with the top wall 15 of the floating body 1.

As shown in fig. 5, the first tendon 14 may be a structure formed by a single or bundled steel wire, steel strand or steel bar, and is inserted into the first connection hole 13 to be connected with the top wall 15 of the floating body 1, so that the top wall 15 of the floating body 1 and the first connection frame 21 can be firmly connected.

The step of stacking the first connection frame 21 on the top wall 15 of each floating body 1 and connecting with the top wall 15 of each floating body 1 includes:

the first connection frame 21 is laminated to the top wall 15 of each floating body 1;

the first tendon 14 of the first connecting frame 21 is inserted into and connected to the first connecting hole 13 of the top wall 15.

In the above steps, the first connection frame 21 is first laminated on the top wall 15 of the floating body 1 so that the first connection frame 21 is supported by the floating body 1, so that the subsequent installation of the first connection frame 21 is convenient. The first tendon 14 of the first connecting frame 21 is inserted into and connected to the first connecting hole 13 on the top wall 15, specifically, the first tendon 14 of the first connecting frame 21 is inserted into the first connecting hole 13, and then the first tendon 14 is connected to the top wall 15 of the floating body 1 with the first connecting hole 13 by using the first connecting member. In some embodiments, the first connecting member may be an anchor with an anchor pad, or may be a member such as a connector, and those skilled in the art may choose according to the actual situation.

In some embodiments, during the process of connecting the first tendon 14 of the first connecting frame 21 to the first connecting hole 13 on the top wall 15, adhesive substances may be respectively applied at the contact positions of the first connecting frame 21 and the top wall 15, and after the first connecting frame 21 and the top wall 15 are connected, the adhesive substances may also adhere the first connecting frame 21 and the top wall 15, so as to be beneficial to enhancing the connection strength of the first connecting frame 21 and the top wall 15.

In this floating foundation construction method according to some embodiments, the side wall 17 of the floating body 1 is provided with a second connecting hole, and the second connecting frame 22 is provided with a second prestressed tendon.

The second connection hole may refer to a hole-like structure provided on the side wall 17 of the floating body 1, which is a through hole structure, so that the second tendon can be inserted, so that the second tendon is connected with the side wall 17 of the floating body 1.

The second tendon may be a structure formed by a single or bundled steel wire, steel strand or steel bar, and is inserted into the second connecting hole to connect with the side wall 17 of the floating body 1, so that the side wall 17 of the floating body 1 and the second connecting frame 22 can be firmly connected.

The step of disposing the second connection frame 22 between the adjacent two floating bodies 1 and connecting the side walls 17 of the adjacent two floating bodies 1 includes:

The second connecting frame 22 is arranged between two adjacent floating bodies 1, and the second prestress rib of the second connecting frame 22 extends into and is connected with the second connecting hole on the side wall 17.

In the above steps, the second connecting frame 22 is first disposed between two adjacent floating bodies 1, so that the second connecting frame 22 is convenient to install. The second tendon of the second connecting frame 22 is inserted into and connected to the second connecting hole on the side wall 17, specifically, the second tendon of the second connecting frame 22 is inserted into the second connecting hole, and then the second tendon is connected to the side wall 17 of the floating body 1 with the second connecting hole by using the second connecting member. In some embodiments, the second connecting member may be an anchor with an anchor pad, or may be a member such as a connector, and those skilled in the art may choose according to the actual situation.

In some embodiments, during the process of connecting the second prestressing tendons of the second connecting frame 22 to the second connecting holes of the side walls 17, adhesive substances may be respectively applied to the contact positions of the second connecting frame 22 and the side walls 17, and after the second connecting frame 22 and the side walls 17 are connected, the adhesive substances may also adhere the second connecting frame 22 and the side walls 17, so as to be beneficial to enhancing the connection strength of the second connecting frame 22 and the side walls 17.

Preferably, as shown in fig. 6, the first connection frame 21 includes a first bracket 211 and a second bracket 212.

The first support 211 and the second support 212 are components used for being connected with each other to form the first connecting frame 21, so that the first connecting frame 21 is also of a split type structure, and the first connecting frame 21 can be split during hoisting and transportation, thereby being beneficial to reducing the requirements on hoisting sites and equipment and reducing the difficulty of construction.

In the floating foundation construction method provided in some embodiments, before the step of stacking the first connection frame 21 on the top wall 15 of each floating body 1 and connecting with the top wall 15 of each floating body 1, further includes:

the first bracket 211 and the second bracket 212 are connected to each other to constitute the first connection frame 21.

Through the above steps, after the split type first and second brackets 211 and 212 are transported to a predetermined area, the first and second brackets 211 and 212 are connected to each other to constitute the first connection frame 21.

Preferably, the first connection frame 21 further includes a reinforcing bracket 213, and the reinforcing bracket 213 is connected between the first bracket 211 and the second bracket 212, so that the overall structural strength of the first connection frame 21 can be enhanced.

In some embodiments, the connection of the first bracket 211, the second bracket 212 and the reinforcing bracket 213 may be performed by a third tendon, which is advantageous in improving the connection strength between the first bracket 211, the second bracket 212 and the reinforcing bracket 213, thereby improving the overall strength of the first connection bracket 21.

In some embodiments, the floating foundation construction method further comprises, before the transferring step:

a prefabrication step of prefabricating the floating body 1, the first bracket 211, the second bracket 212 and the second connection frame 22 separately provided.

The prefabrication step may refer to the prefabrication of the individual components of the floating foundation separately prior to the transfer step. Specifically, the floating body 1, the first bracket 211, the second bracket 212 and the second connecting frame 22 are manufactured in a centralized manner in a factory, and compared with a wharf and a preset area of the sea surface provided with the floating foundation, the floating foundation has the advantage of complete equipment, and is beneficial to making the manufacture of each member of the floating foundation convenient.

Specifically, as shown in fig. 7, the prefabrication step includes:

s401, providing a mold for forming the floating body 1, the first bracket 211, the second bracket 212 and the second connection frame 22.

And S402, pouring concrete slurry into the mould of the floating body 1, the mould of the first bracket 211, the mould of the second bracket 212 and the mould of the second connecting frame 22 respectively, and curing to form the floating body 1, the first bracket 211, the second bracket 212 and the second connecting frame 22.

In the above steps, the mold may refer to a structure capable of enclosing the cavity 12 in the shape of the floating body 1, the first bracket 211, the second bracket 212, and the second connection frame 22, such that the floating body 1, the first bracket 211, the second bracket 212, and the second connection frame 22 are formed after a predetermined material is poured into the mold to be solidified.

Pouring concrete slurry into the corresponding mould, and respectively forming a floating body 1, a first bracket 211, a second bracket 212 and a second connecting frame 22 after concrete is solidified, wherein the floating body 1, the first bracket 211, the second bracket 212 and the second connecting frame 22 are of concrete structures, and compared with steel materials, the cost of the floating foundation can be greatly reduced.

Some embodiments of the present application further provide a floating foundation, which may be manufactured by using the floating foundation construction method provided by the above technical solution, as shown in fig. 8, where the floating foundation includes at least two floating bodies 1 and a connection frame assembly, the at least two floating bodies 1 are spaced apart, and the floating bodies 1 have opposite top walls 15, bottom walls 16 and side walls 17 connected between the top walls 15 and the bottom walls 16 along a first direction; the connection frame assembly comprises a first connection frame 21 and a second connection frame 22, wherein the first connection frame 21 is connected to the top wall 15 of each floating body 1, the second connection frame 22 is connected between the side walls 17 of two adjacent floating bodies 1, and the first connection frame 21 is used for connecting the tower body 20.

The floating body 1 as a member floating on the water surface is used to provide buoyancy to the floating foundation, and the number of the floating bodies 1 is set to at least two so that the floating body 1 can provide sufficient buoyancy to the floating foundation to enable the floating foundation to stably float on the water surface. At least two floating bodies 1 are arranged at intervals, so that the floating bodies 1 can pass through water flow, and the impact of the water flow on the floating foundation can be reduced.

The floating body 1 is provided with a top wall 15 and a bottom wall 16 at intervals along a first direction, and a side wall 17 connected between the top wall 15 and the bottom wall 16, so that the floating body 1 forms a sealing structure, and the floating body 1 has a certain height when the floating foundation is placed on the water surface, thereby enabling the floating body 1 to provide larger buoyancy. The top wall 15, the bottom wall 16 and the side walls 17 may each refer to a structure of the floating body 1, which are connected to each other to form a unitary structure. The first direction may be a vertical direction when the floating foundation is placed on the water surface, and when the floating foundation is placed on the water surface, the top wall 15 may refer to a wall structure with the highest height, and the bottom wall 16 may refer to a wall body disposed at a distance parallel to the top wall 15 along the first direction. The side wall 17 may refer to a wall structure extending in the first direction and connected between the bottom wall 16 and the top wall 15. In some embodiments, the relative positions of the first and second connection frames 21 and 22 may be such that when the floating foundation is placed on the water surface, the first connection frame 21 is positioned above the water surface and the second connection frame 22 is positioned below the water surface.

Preferably, both the floating body 1 and the connection frame assembly are of concrete structure, which can greatly reduce the cost of the floating foundation.

In some embodiments, a cavity 12 is provided in the float 1, and ballast material is provided at the bottom of the cavity 12.

The cavity 12 may refer to a space formed in the floating body 1 such that the floating body 1 is of a hollow structure, thereby enabling the floating body 1 to provide sufficient buoyancy. Preferably, the bottom of the cavity 12 is provided with ballast material having a predetermined mass, which can provide damping for the floating body 1, advantageously reducing the sloshing of the floating foundation in water, improving the stability of the floating foundation.

In some embodiments, the ballast material is configured as a fluid, and the second connecting frame 22 is provided with a connecting channel therein, and the connecting channel is communicated with the cavities 12 of two adjacent floating bodies 1.

The connection channel may refer to a hole-like structure provided in the second connection frame 22, which makes the second connection frame 22 a hollow structure. When the second connecting frame 22 is connected between the side walls 17 of the two adjacent floating bodies 1, the connecting channels are used for communicating the cavities 12 of the two adjacent floating bodies 1, and the ballast materials are fluid, so that the ballast materials can flow between the two adjacent floating bodies 1 through the connecting channels of the second connecting frame 22, the balance of the ballast materials between the floating bodies 1 is facilitated, and the possibility of tilting of the floating foundation is reduced.

In some embodiments, as shown in fig. 9, a partition 11 is disposed in the cavity 12, the partition 11 dividing the cavity 12 into at least two compartments 121 that are independently disposed.

The partition 11 may refer to a plate-shaped member having a certain thickness, which is disposed in the cavity 12, is hermetically connected to the inner wall of the cavity 12, and partitions the cavity 12 into at least two compartments 121 independently disposed. Preferably, the partition 11 divides the cavity 12 into at least two independent compartments 121 with equal size, each compartment 121 is independent of the other, and when the floating body 1 is partially damaged and part of the compartments 121 are filled with water, the floating body 1 still has buoyancy and does not sink, thereby being beneficial to improving the safety of the floating foundation.

Preferably, the floating body 1 is configured as a rectangular parallelepiped structure, and both ends of the floating body 1 are provided as cone structures.

The floating body 1 is configured into a cuboid structure, so that a special template is not required to be manufactured when the floating body 1 is manufactured, the manufacturing cost of the template is reduced, and the cost of the floating foundation is reduced. In some embodiments, the floating body 1 may also be configured as a cylindrical structure, and the structural shape of the floating body 1 may be set by those skilled in the art according to actual circumstances.

Preferably, both ends of the floating body 1 are provided with cone structures, so that the impact force on the floating body 1 is smaller when water flows through the floating body 1, and the stability of the floating foundation is improved.

The connection frame assembly may refer to a frame assembly for connecting floating bodies 1, and includes a first connection frame 21 and a second connection frame 22, wherein the first connection frame 21 is connected to the top wall 15 of each floating body 1 of the floating foundation, the second connection frame 22 is connected between the side walls 17 of two adjacent floating bodies 1, the first connection frame 21 is used for connecting the tower body 20, so that the tower body 20 can be connected to the top wall 15 of the floating body 1 through the first connection frame 21, when the floating foundation is placed on the water surface, the load transferred by the tower body 20 along the vertical direction acts on the top wall 15 of the floating body 1 and then is transferred to the whole side wall 17 instead of acting on a certain part of the side wall 17 of the floating body 1, thereby reducing the concentration of the load of the side walls 17 and improving the stress condition of the floating foundation.

In some embodiments, the first connecting frame 21 has a through-flow opening 23 formed therein, and the through-flow opening 23 has a polygonal shape.

The through-flow opening 23 may refer to a space in the first connection frame 21 in which no member is provided. Because the first connecting frame 21 is connected to the top wall 15 of the floating body 1, when the floating foundation is placed on the water surface, the first connecting frame 21 is located above the water surface, and the overflow port 23 is used for passing through the air flow or the splashed water wave on the water surface, so that the effect of the air flow or the water wave on the floating foundation is reduced, the floating foundation is kept stable, and the possibility of overturning the floating foundation is reduced.

Specifically, the first connection frame 21 includes at least two first brackets 211 disposed at intervals, at least two second brackets 212 disposed at intervals, and a plurality of reinforcing brackets 213, two ends of the first brackets 211 are respectively connected to two adjacent second brackets 212, and the reinforcing brackets 213 are connected between the first brackets 211 and the second brackets 212 to form the through-flow openings 23.

The first brackets 211 are arranged at least two, at least two first brackets 211 are arranged at intervals in parallel, at least two second brackets 212 are arranged at intervals in parallel, two ends of each first bracket 211 are respectively connected between two adjacent second brackets 212, and the first connecting frame 21 formed by connecting the first brackets 211 and the second brackets 212 is of a rectangular structure, so that the first connecting frame 21 is conveniently connected with the at least two floating bodies 1.

The reinforcing bracket 213 is connected between the first bracket 211 and the second bracket 212, so as to enhance the structural strength of the first connecting frame 21, and enhance the bearing capacity of the first connecting frame 21, so that the first connecting frame 21 can bear the load transmitted by the tower body 20.

In some embodiments, the second brackets 212 are disposed along the length direction of the floating body 1, both ends of the second brackets 212 are connected to two first brackets 211 respectively stacked on the two floating bodies 1, and the tower body 20 is connected to the first brackets 211.

The second brackets 212 are arranged along the length direction of the floating body 1, so that the whole second brackets 212 are completely overlapped on the top wall 15 of the floating body 1, and two ends of each second bracket 212 are respectively connected with two first brackets 211 overlapped on each floating body 1, thereby being beneficial to improving the connection strength of the first connecting frame 21 and the top wall 15 of the floating body 1. The tower body 20 is connected to the first bracket 211, so that the tower body 20 is located in the middle of at least two floating bodies 1, which is beneficial to keeping balance of the floating foundation and improving stability of the floating foundation.

Some embodiments of the present application further provide a wind generating set, as shown in fig. 10, which includes a floating foundation provided by any one of the above technical solutions, a tower body 20, and a fixing pile 30, where the tower body 20 is connected to a first connection frame 21 of the floating foundation; a anchor pile 30 connected to the sea floor 40, and a second connection frame 22 of the floating foundation connected to the anchor pile 30 by an anchor chain 50.

The tower body 20 may refer to a tower consisting of a plurality of towers in a wind generating set, and is used for supporting heavy structures such as a nacelle, a generator, an impeller and the like, and is connected with the first connecting frame 21 of the floating foundation, so that the tower body can bear a large load and transfer the load to the floating foundation.

The anchor piles 30 connected to the sea floor 40 can provide a large force to the floating foundation through the anchor chains 50 so that the floating foundation is moored to a predetermined area. Specifically, at least one mooring structure 221 is provided on the second connection frame 22 of the floating foundation, and the mooring structure 221 is connected to the anchor pile 30 through the anchor chain 50, so as to moor the floating foundation.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the embodiments, and are intended to be included within the scope of the claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (17)

1. The floating foundation construction method is characterized by comprising the following steps of:

a transferring step of transferring the floating body, the first connecting frame and the second connecting frame which are separately arranged to a preset area where the floating foundation is arranged, wherein the floating body is provided with a top wall and a bottom wall which are oppositely arranged along a first direction and a side wall connected between the top wall and the bottom wall;

and assembling, namely connecting the top walls of two adjacent floating bodies through the first connecting frame, and connecting the side walls of two adjacent floating bodies through the second connecting frame.

2. The floating foundation construction method of claim 1, wherein,

the assembling step comprises the following steps:

placing at least two of said floats on the surface of water in said predetermined area;

laminating the first connection frame to the top wall of each floating body and connecting the first connection frame to the top wall of each floating body;

and the second connecting frame is arranged between two adjacent floating bodies and is connected with the side walls of the two adjacent floating bodies.

3. The floating foundation construction method of claim 1, further comprising a mooring step comprising:

Setting a fixed pile on the seabed of the preset area;

and connecting the second connecting frame with the fixed piles through anchor chains.

4. The floating foundation construction method according to claim 2, wherein the top wall of the floating body is provided with a first connecting hole, and a first prestressed tendon is arranged in the first connecting frame;

the step of stacking the first connection frame on the top wall of each floating body and connecting with the top wall of each floating body includes:

stacking the first connection frame on the top wall of each floating body;

and the first prestressed tendons of the first connecting frame extend into and are connected with the first connecting holes on the top wall.

5. The floating foundation construction method according to claim 2, wherein a second connecting hole is formed in the side wall of the floating body, and a second prestressed tendon is arranged in the second connecting frame;

the step of disposing the second connection frame between the adjacent two floating bodies and connecting the second connection frame with the side walls of the adjacent two floating bodies includes:

and the second connecting frame is arranged between two adjacent floating bodies, and the second prestressed tendons of the second connecting frame extend into and are connected with the second connecting holes on the side walls.

6. The floating foundation construction method of claim 2 wherein the first connection frame comprises a first bracket and a second bracket;

before the step of stacking the first connection frame on the top wall of each floating body and connecting the first connection frame with the top wall of each floating body, the method further comprises:

and interconnecting the first bracket and the second bracket to form the first connecting bracket.

7. The floating foundation construction method of claim 6, further comprising, prior to said transferring step:

prefabricating, namely prefabricating the floating body, the first bracket, the second bracket and the second connecting frame which are arranged in a split mode.

8. The floating foundation construction method of claim 7 wherein said prefabricating step comprises:

providing a mold forming the floating body, the first bracket, the second bracket and the second connecting frame;

and pouring concrete slurry into the floating body mould, the first support mould, the second support mould and the second connecting frame mould respectively, and solidifying to form the floating body, the first support, the second support and the second connecting frame.

9. A floating foundation comprising:

at least two floating bodies, at least two floating bodies are arranged at intervals, and the floating bodies are provided with a top wall, a bottom wall and side walls, wherein the top wall and the bottom wall are opposite, and the side walls are connected between the top wall and the bottom wall;

the connecting frame assembly comprises a first connecting frame and a second connecting frame, wherein the first connecting frame is connected to the top wall of each floating body, the second connecting frame is connected between the side walls of two adjacent floating bodies, and the first connecting frame is used for connecting the tower body.

10. The floating foundation of claim 9 wherein the first connector frame has a through-flow opening formed therein, the through-flow opening having a polygonal shape.

11. The floating foundation of claim 10 wherein said first connector includes at least two first brackets spaced apart, at least two second brackets spaced apart and a plurality of reinforcing brackets, said first brackets having ends connected to adjacent ones of said second brackets, respectively, said reinforcing brackets being connected between said first brackets and said second brackets to form said flow-through openings.

12. The floating foundation of claim 11, wherein the second brackets are disposed along the length direction of the floating body, two ends of the second brackets are respectively connected to two first brackets stacked on each floating body, and the tower body is connected to the first brackets.

13. The floating foundation of claim 9, wherein a cavity is provided in the floating body, and ballast material is provided at the bottom of the cavity.

14. The floating foundation of claim 13 wherein said ballast material is configured as a fluid and said second connector has a connecting passage disposed therein, said connecting passage communicating with said cavities of adjacent two of said floating bodies.

15. A floating foundation according to claim 13, wherein a partition is provided in the cavity, the partition dividing the cavity into at least two separately arranged compartments.

16. A floating foundation according to any one of claims 9 to 15, wherein the floating body is configured as a cuboid structure, both ends of the floating body being provided as cone structures.

17. A wind turbine generator set, comprising:

a floating foundation according to any one of claims 9 to 16;

the tower body is connected to the first connecting frame of the floating foundation;

the second connecting frame of the floating foundation is connected with the fixed pile through an anchor chain.