Negative pressure wind power pile and construction method thereof

Abstract

The application provides a negative pressure type wind power pile and a construction method thereof. The negative pressure type wind power pile comprises a foundation pile, a separator and an extraction piece. The foundation pile has a cavity. The separator and the extraction piece are arranged in the cavity. The separator divides the cavity into a first cavity and a second cavity. An extraction end of one end of the extraction piece is located in the first cavity, and a discharge end of the other end of the extraction piece is located in the second cavity. The extraction piece is configured to extract gas or liquid in the first cavity into the second cavity. The construction method of the negative pressure type wind power pile comprises the following steps: placing the foundation pile above a pile site, and sequentially making the foundation pile enter a liquid surface and a mud surface under stress until the separator in the cavity of the foundation pile is located above the mud surface and has a preset distance from the mud surface. The negative pressure type wind power pile provided by the application can enhance the capacity of bearing bearing capacity and horizontal resistance, reduce the length of the pile and reduce the cost. The construction method of the negative pressure type wind power pile provided by the application is easy to implement.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wind power piles, in particular to a negative pressure type wind power pile and a construction method thereof. BACKGROUND

[0002] With the continuous strengthening of support for the new energy industry, the concept of green development is more implemented, and a large number of offshore wind power projects are also being continuously carried out.

[0003] China's offshore wind power construction has been fully developed, and the type of offshore wind power pile is mainly single pile, and multi-pile jacket is auxiliary, and the pile foundation adopts steel pipe pile.

[0004] However, the wind power pile in the prior art has insufficient capacity to withstand bearing capacity and horizontal resistance, which limits the development of the offshore wind power industry. SUMMARY

[0005] In view of the above problems, the present application provides a negative pressure type wind power pile and a construction method thereof, which can enhance the capacity to withstand bearing capacity and horizontal resistance, reduce the length of the pile, and reduce the cost. The construction method of the negative pressure type wind power pile provided by the present application is easy to implement.

[0006] In order to achieve the above purpose, the present application provides the following technical solutions:

[0007] The first aspect of the present application provides a negative pressure type wind power pile, comprising a foundation pile, a partition piece and an extraction piece, the foundation pile has a cavity, the partition piece and the extraction piece are arranged in the cavity, the partition piece divides the cavity into a first cavity and a second cavity, the first cavity is located at the bottom side of the second cavity close to the foundation pile; the bottom of the foundation pile is provided with a first through hole, the first through hole is in communication with the first cavity; the top of the foundation pile is provided with a second through hole, the second through hole is in communication with the second cavity;

[0008] The extraction end of one end of the extraction piece is located in the first cavity, and the discharge end of the other end of the extraction piece is located in the second cavity; the extraction piece is configured to extract the gas or liquid in the first cavity into the second cavity.

[0009] After the construction of the negative pressure type wind power pile provided by the present application is completed, the soil enters the first cavity and forms an integral whole with the foundation pile, thereby forming a mode of common force bearing of the foundation pile and the soil, both of which jointly bear the bearing capacity in the vertical direction and the horizontal resistance in the horizontal direction; compared with the single pile in the prior art, the negative pressure type wind power pile provided by the present application can bear greater bearing capacity and horizontal resistance. Compared with the single pile in the prior art, the length of the negative pressure type wind power pile of the present application is shorter when bearing the same size of bearing capacity and horizontal resistance, the negative pressure type wind power pile of the present application can reduce the length of the pile and reduce the cost.

[0010] In a possible implementation, the extraction member comprises a pump body and a first pipe body, the pump body is installed on the partition member and located in the second cavity, and the partition member is provided with a through hole;

[0011] The first pipe body passes through the through hole, the first end of the first pipe body is connected with the pump body, the second end of the first pipe body is located in the first cavity, and the second end of the first pipe body is the extraction end.

[0012] In this way, through the cooperation of the pump body and the first pipe body, the gas or liquid in the first cavity can be conveniently extracted into the second cavity.

[0013] In a possible implementation, the extraction member further comprises a protection member, the protection member is installed on the partition member, and the protection member has a protection cavity inside, and the pump body is located in the protection cavity.

[0014] In this way, the protection member can protect the pump body from damage caused by factors outside the protection member.

[0015] In a possible implementation, the extraction member further comprises a second pipe body, the protection member is provided with a protection hole in communication with the protection cavity, and the second pipe body passes through the protection hole; the first end of the second pipe body is in communication with the discharge port of the pump body, the second end of the second pipe body extends to the outside of the protection member and is located in the second cavity, and the second end of the second pipe body is the discharge end.

[0016] In this way, the presence of the second pipe body facilitates the gas or liquid in the pump body to be discharged to the outside of the protection member and into the second cavity.

[0017] In a possible implementation, the cavity wall of the second cavity is provided with a through hole, the through hole is in communication with the second cavity and the outside of the foundation pile, and the through hole is arranged close to the partition member.

[0018] In this way, the liquid entering the second cavity from the through hole can exert a downward pressure on the partition member, thereby facilitating the lowering of the foundation pile and making the foundation pile tightly press against the soil.

[0019] In a possible implementation, the extraction member further comprises a grouting pipe, at least part of the grouting pipe is located in the second cavity; the partition member is provided with a grouting hole, and one end of the grouting pipe is in communication with the first cavity through the grouting hole.

[0020] In this way, the presence of the grouting pipe facilitates the injection of concrete into the first cavity, thereby improving the bearing capacity and horizontal resistance of the wind power pile.

[0021] In a possible implementation, the extraction member further comprises an insertion member, the insertion member is located in the first cavity; one end of the insertion member is connected with the partition member, and the other end of the partition member extends away from the partition member.

[0022] In this way, when the foundation pile is lowered, the insert can be inserted into the soil to connect the soil and the foundation pile, thereby improving the installation stability of the foundation pile.

[0023] In a possible implementation, the insert is provided in plurality, and the plurality of inserts are spaced apart on the partition; and an end of the insert away from the partition is provided with a tapered surface, and a top of the tapered surface is inclined away from a center line of the insert relative to a bottom of the tapered surface.

[0024] In this way, the tapered surface facilitates the insertion of the insert into the soil; and the plurality of inserts can further improve the installation stability of the foundation pile.

[0025] In a possible implementation, the insert further comprises a reinforcing member connected to the cavity wall of the cavity and the partition.

[0026] In this way, the reinforcing member can improve the connection strength between the cavity wall of the cavity and the partition, and ensure normal use of the partition.

[0027] In a possible implementation, the reinforcing member is located in the second cavity, and the reinforcing member is provided in plurality, and the plurality of reinforcing members are spaced apart along the circumference of the second cavity.

[0028] In this way, the connection strength between the cavity wall of the cavity and the partition can be further improved, and the reliability of the partition can be improved.

[0029] The second aspect of the present application provides a construction method of the negative pressure wind power pile, which is applicable to the negative pressure wind power pile in any of the above implementations, and the construction method comprises the following steps.

[0030] The foundation pile is placed above the pile site, and the foundation pile is lowered into the liquid surface and the soil surface in sequence under stress until the partition in the cavity of the foundation pile is located above the soil surface and has a preset distance from the soil surface;

[0031] When the bottom of the foundation pile enters the liquid surface, the extraction member is controlled to extract the gas in the first cavity into the second cavity, and the first cavity is filled with the liquid in the negative pressure environment;

[0032] When the bottom of the foundation pile enters the soil surface, the extraction member is controlled to extract the liquid in the first cavity into the second cavity.

[0033] The construction method of the negative pressure wind power pile provided by the present application is easy to implement when implemented, only needs to make the foundation pile enter the liquid surface and the soil surface in sequence under stress until the partition is located above the soil surface and has a preset distance from the soil surface; and during the lowering process, the extraction member extracts the gas or liquid in the first cavity into the second cavity.

[0034] In a possible implementation, the control of the lowering of the foundation pile comprises:

[0035] When the bottom of the foundation pile enters the liquid surface, the foundation pile is lowered under the action of its own gravity;

[0036] When the bottom of the foundation pile enters the mud surface, the foundation pile is lowered under the pressure of the pressure applying member.

[0037] In this way, the foundation pile can be smoothly installed in the pile position under the action of its own gravity and the pressure applying member.

[0038] In a possible implementation, when the partition member is located above the mud surface and has a preset distance from the mud surface, the method further includes: controlling the grouting pipe to inject concrete into the first cavity.

[0039] In this way, after the concrete is injected into the first cavity, the wind power pile can have improved ability to bear the bearing capacity and horizontal resistance.

[0040] The structure of the present application and other inventive purposes and benefits will be more apparent and easy to understand through the description of the specific embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description are some embodiments of the present application, and other accompanying drawings can also be obtained by those skilled in the art without creative labor.

[0042] Figure 1 A schematic view of the negative pressure wind power pile before entering the water according to an embodiment of the present application;

[0043] Figure 2 A schematic view of the negative pressure wind power pile when entering the water according to an embodiment of the present application;

[0044] Figure 3 A schematic view of the negative pressure wind power pile when entering the mud according to an embodiment of the present application;

[0045] Figure 4 A schematic view of the negative pressure wind power pile when completing the construction according to an embodiment of the present application;

[0046] Figure 5 A flowchart of the construction method of the negative pressure wind power pile according to an embodiment of the present application.

[0047] Explanation of reference signs:

[0048] 100 - foundation pile; 110 - cavity;

[0049] 111 - first cavity; 112 - second cavity;

[0050] 120 - through hole; 130 - first through hole;

[0051] 140 - second through hole; 200 - partition;

[0052] 210 - through hole; 220 - grouting hole;

[0053] 300 - extraction; 310 - pump body;

[0054] 320 - first pipe body; 330 - second pipe body;

[0055] 400 - protection; 410 - protection cavity;

[0056] 420 - protection hole; 500 - grouting pipe;

[0057] 600 - insert; 700 - reinforcement;

[0058] 800 - liquid level; 900 - mud level. DETAILED DESCRIPTION

[0059] China's offshore wind power construction has been fully developed. Due to the shallow water depth of the near shore, most offshore wind power piles adopt fixed pile foundation, and the most common one is single pile foundation. Among them, the single pile foundation is to drive a large-diameter pile into the seabed, with the pile head above the sea level, and connected with the wind turbine tower through bolts. The single pile will be subjected to bearing capacity and horizontal resistance in the working process. The bearing capacity refers to the vertical downward force, and the horizontal resistance is perpendicular to the direction of the bearing capacity. Due to the simple structure of the single pile, the construction is rapid, and it has been widely used in offshore wind power development.

[0060] However, in the existing wind power pile, due to the large flexibility of the single pile foundation type wind power pile, the bearing capacity and horizontal resistance are insufficient in the use process, thereby limiting the development of offshore wind power industry.

[0061] In view of the above problems, the embodiment of the present application provides a negative pressure type wind power pile and a construction method thereof. The negative pressure type wind power pile comprises a foundation pile, a partition piece and an extraction piece. The partition piece can separate the cavity of the foundation pile into a first cavity and a second cavity. The extraction piece can extract the gas or liquid in the first cavity into the second cavity. In the implementation of the construction method of the negative pressure type wind power pile, the foundation pile sequentially enters a liquid surface and a mud surface under stress until the partition piece is above the mud surface and has a preset distance from the mud surface. During the descending process, the extraction piece extracts the gas or liquid in the first cavity into the second cavity, facilitating the smooth descent of the extraction piece. After the construction of the negative pressure type wind power pile is completed, the mud enters the first cavity and forms an integral whole with the foundation pile, thereby forming a mode of mutual force bearing of the foundation pile and the mud, which can enhance the capacity of the wind power pile to bear the bearing capacity and horizontal resistance, reduce the pile length, and reduce the cost. The construction method of the negative pressure type wind power pile is easy to implement.

[0062] To make the objectives, technical solutions, and superiorities of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described below in connection with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without any creative work fall within the protection scope of the present application.

[0063] The technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described again in some embodiments.

[0064] The following will be described in detail in combination with Figures 1 to 4 The structure of the negative pressure type wind power pile provided by the embodiment of the present application is described in detail.

[0065] As Figure 1As shown, the negative pressure wind power pile provided in the application comprises a base pile 100, a partition 200 and an extraction piece 300; wherein the base pile 100 has a cavity 110 therein, the partition 200 and the extraction piece 300 are both arranged in the cavity 110, the partition 200 divides the cavity 110 into a first cavity 111 and a second cavity 112, and the first cavity 111 is located at the side of the bottom of the base pile 100 close to the second cavity 112. Meanwhile, the bottom of the base pile 100 is provided with a first through hole 130, the first through hole 130 is in communication with the first cavity 111; the top of the base pile 100 is provided with a second through hole 140, the second through hole 140 is in communication with the second cavity 112. Specifically, the cavity 110 can penetrate through the base pile 100 along the extension direction of the base pile 100, and the first through hole 130 and the second through hole 140 are respectively located at the opposite ends of the cavity 110; and the partition 200 can be connected with the cavity wall of the cavity 110 along the circumference of the cavity 110.

[0066] Moreover, the extraction end of one end of the extraction piece 300 is located in the first cavity 111, and the discharge end of the other end of the extraction piece 300 is located in the second cavity 112, and the extraction piece 300 is configured to extract the gas or liquid in the first cavity 111 into the second cavity 112, and the liquid can be seawater and the gas can be air. After the partition 200 divides the cavity 110 into the first cavity 111 and the second cavity 112, the gas or liquid in the first cavity 111 cannot flow freely into the second cavity 112; the presence of the extraction piece 300 facilitates the extraction of the gas or liquid in the first cavity 111 into the second cavity 112.

[0067] In the construction process of the negative pressure wind power pile provided in the embodiment of the application, the bottom of the base pile 100 is stressed to descend into the liquid surface 800 and the mud surface 900 in turn, until the partition 200 is located above the mud surface 900 and has a preset distance from the mud surface 900; for example, Figures 1 to 4 As shown, the direction indicated by the arrow of the dotted line is the descending direction of the base pile 100. First, as shown, Figure 2 The bottom of the base pile 100 first enters the liquid surface 800, and the presence of air in the first cavity 111 makes the base pile 100 not easy to sink in the liquid; at this time, the extraction piece 300 is controlled to extract the gas in the first cavity 111 into the second cavity 112, a negative pressure environment is formed in the first cavity 111, and the liquid enters and fills the first cavity 111, thereby facilitating the sinking of the base pile 100. Then, as shown, Figure 3 The bottom of the base pile 100 descends into the mud surface 900, and the presence of liquid in the first cavity 111 makes the base pile 100 not easy to sink in the mud; at this time, the extraction piece 300 is controlled to extract the liquid in the first cavity 111 into the second cavity 112, thereby facilitating the sinking of the base pile 100 in the mud, and in the sinking process, the mud enters and fills the first cavity 111.

[0068] Thus, as shown in Figure 4 the negative pressure type wind power pile is completed, the soil enters the first cavity 111 and forms an integral with the foundation pile 100, thereby forming a mode of the foundation pile 100 and the soil jointly bearing, both of which jointly bear the bearing capacity along the vertical direction and the horizontal resistance along the horizontal direction; compared with the single pile in the prior art, the negative pressure type wind power pile provided by the application can bear greater bearing capacity and horizontal resistance. Compared with the single pile in the prior art, the negative pressure type wind power pile of the application has a shorter length when bearing the same size of bearing capacity and horizontal resistance, so that the negative pressure type wind power pile of the application can reduce the pile length and reduce the cost.

[0069] In the embodiment of the application, as shown in Figure 1 the extraction piece 300 includes a pump body 310 and a first pipe body 320, the pump body 310 is installed on the partition piece 200 and located in the second cavity 112, the partition piece 200 is provided with a through hole 210; and the first pipe body 320 penetrates the through hole 210, the first end of the first pipe body 320 is connected with the pump body 310, the second end of the first pipe body 320 is placed in the first cavity 111, and the second end of the first pipe body 320 is the extraction end. After the first pipe body 320 penetrates the through hole 210, under the extraction action of the pump body 310, the gas or liquid in the first cavity 111 can enter the pump body 310 through the second end of the first pipe body 320 and be discharged into the second cavity 112. In this way, through the cooperation of the pump body 310 and the first pipe body 320, the gas or liquid in the first cavity 111 can be extracted into the second cavity 112. In addition, the first pipe body 320 is sealingly connected with the partition piece 200 at the through hole 210.

[0070] Further, as shown in Figure 1 the negative pressure type wind power pile further includes a protection piece 400, the protection piece 400 is installed on the partition piece 200; the protection piece 400 has a protection cavity 410 inside, and the pump body 310 is located in the protection cavity 410. In this way, the existence of the protection piece 400 can protect the pump body 310 and prevent factors outside the protection piece 400 from damaging the pump body 310. For example, the liquid in the second cavity 112 does not affect the normal work of the pump body 310. Specifically, the protection piece 400 can be a protection cover, and the protection cover and the pump body 310 are detachably installed on the partition piece 200, thereby facilitating the recycling of the protection cover and the pump body 310.

[0071] Further, as shown in Figure 1As shown, the extraction piece 300 further comprises a second tube body 330, the protection piece 400 is provided with a protection hole 420 in communication with the protection cavity 410, and the second tube body 330 penetrates the protection hole 420; the first end of the second tube body 330 is in communication with the discharge port of the pump body 310, the second end of the second tube body 330 extends to the outside of the protection piece 400 and is located in the second cavity 112, and the second end of the second tube body 330 is a discharge end. Therefore, the gas or liquid in the first cavity 111 first enters the pump body 310 through the second end of the first tube body 320, then enters the second tube body 330 through the discharge port of the pump body 310, and finally is discharged to the outside of the protection piece 400 from the second end of the second tube body 330. In this way, the presence of the second tube body 330 facilitates the discharge of the gas or liquid in the pump body 310 to the outside of the protection piece 400 and into the second cavity 112.

[0072] In the embodiment of the present application, as shown in Figure 1 As shown, the cavity wall of the second cavity 112 is provided with a through hole 120, the through hole 120 is in communication with the second cavity 112 and the outside of the foundation pile 100; the through hole 120 is located close to the partition piece 200. Therefore, in the process of the foundation pile 100 being forced to descend, when the through hole 120 is located below the liquid surface 800, the liquid outside the foundation pile 100 can enter the second cavity 112 through the through hole 120, thereby maintaining the balance of internal and external pressure. In this way, the liquid entering the second cavity 112 from the through hole 120 can exert a downward pressure on the partition piece 200, thereby promoting the descent of the foundation pile 100 and making the foundation pile 100 press tightly in the soil, further improving the ability of the wind power pile to withstand bearing capacity and horizontal resistance.

[0073] In the embodiment of the present application, as shown in Figure 1 As shown, the negative pressure type wind power pile further comprises a grouting pipe 500, at least part of the grouting pipe 500 is located in the second cavity 112; the partition piece 200 is provided with a grouting hole 220, one end of the grouting pipe 500 is in communication with the first cavity 111 through the grouting hole 220. After the forced descent of the foundation pile 100 is completed, concrete can be injected into the first cavity 111 through the grouting pipe 500, and after the concrete is coagulated, it can play a role of connecting the soil and the foundation pile 100, the strength of the part of the foundation pile 100 located in the soil is improved, further improving the ability of the wind power pile to withstand bearing capacity and horizontal resistance. In this way, the presence of the grouting pipe 500 facilitates the injection of concrete into the first cavity 111, thereby improving the ability of the wind power pile to withstand bearing capacity and horizontal resistance.

[0074] In the embodiment of the present application, as shown in Figure 2As shown, the negative pressure type wind power pile further comprises an insert 600 located in the first cavity 111, one end of the insert 600 is connected with the partition 200, and the other end of the partition 200 extends away from the partition 200. In this way, after the foundation pile 100 is lowered, the insert 600 in the first cavity 111 can be inserted into the soil, and the insert 600 can play a role in connecting the soil and the foundation pile 100, thereby improving the installation stability of the foundation pile 100. Specifically, the insert 600 can be a rod.

[0075] Specifically, a plurality of inserts 600 are arranged on the partition 200 at intervals; the end of the insert 600 away from the partition 200 has a tapered surface, and the top of the tapered surface is inclined away from the center line of the insert 600 relative to the bottom of the tapered surface. In this way, the presence of the tapered surface facilitates the insertion of the insert 600 into the soil; the arrangement of the plurality of inserts 600 can further ensure the installation stability of the foundation pile 100.

[0076] In the embodiments of the present application, as shown in Figure 2 The negative pressure type wind power pile further comprises a reinforcing member 700 connected with the cavity wall of the cavity 110 and the partition 200. In this way, the presence of the reinforcing member 700 can improve the connection strength between the cavity wall of the cavity 110 and the partition 200, and ensure the normal use of the partition 200. Specifically, the reinforcing member 700 can be a reinforcing rib.

[0077] Specifically, the reinforcing member 700 is located in the second cavity 112, and a plurality of reinforcing members 700 are arranged at intervals along the circumference of the second cavity 112. In this way, the plurality of reinforcing members 700 arranged at intervals along the circumference of the second cavity 112 can further improve the connection strength between the cavity wall of the cavity 110 and the partition 200, and improve the reliability of the partition 200.

[0078] On the basis of the above-mentioned embodiments, the present application provides a construction method of a negative pressure type wind power pile, which is applicable to the negative pressure type wind power pile in any of the above-mentioned embodiments, as shown in Figure 5 The construction method comprises:

[0079] S100: placing the foundation pile above the pile site, and sequentially lowering the foundation pile into the liquid surface and the soil surface under stress until the partition in the cavity of the foundation pile is located above the soil surface and has a preset distance from the soil surface.

[0080] Specifically, the preset distance can be in the range of 0 to 0.5 meters; when the preset distance is 0, the partition 200 is in close contact with the soil surface 900, at this time, the soil, the foundation pile 100 and the partition 200 form an integral whole and bear stress together, thereby further improving the ability of the wind power pile to withstand the bearing capacity and horizontal resistance.

[0081] S200: When the bottom of the foundation pile enters the liquid surface, the extraction component is controlled to extract the gas in the first chamber into the second chamber, and the first chamber is filled with liquid in a negative pressure environment.

[0082] like Figure 2 As shown, the bottom of the foundation pile 100 first enters the liquid surface 800. Due to the presence of air in the first cavity 111, the foundation pile 100 is not easy to sink in the liquid. At this time, the extraction component 300 is controlled to extract the gas in the first cavity 111 into the second cavity 112, and a negative pressure environment is formed in the first cavity 111. The liquid enters and fills the first cavity 111, which facilitates the sinking of the foundation pile 100.

[0083] S300: When the bottom of the foundation pile enters the mud surface, the extraction device is controlled to extract the liquid in the first chamber into the second chamber.

[0084] like Figure 3 As shown, the bottom of the foundation pile 100 descends into the mud surface 900. Due to the presence of liquid in the first cavity 111, the foundation pile 100 does not easily sink in the mud. At this time, the extraction component 300 is controlled to extract the liquid in the first cavity 111 into the second cavity 112, which facilitates the sinking of the foundation pile 100 in the mud. During the sinking process, the mud enters and fills the first cavity 111.

[0085] In this embodiment of the application, controlling the descent of the foundation pile 100 includes:

[0086] When the bottom of the foundation pile 100 enters the liquid level 800, the foundation pile 100 descends under its own weight.

[0087] When the bottom of the foundation pile 100 enters the mud surface 900, the pressure on the foundation pile 100 from the pressure-applying component decreases.

[0088] With this configuration, the foundation pile 100 can be successfully installed in the pile position under its own weight and the action of the pressure-applying component.

[0089] In this embodiment, after the separator 200 is located above the mud surface 900 and at a preset distance from the mud surface 900, the method further includes controlling the grouting pipe 500 to inject concrete into the first cavity 111. This configuration, by injecting concrete into the first cavity 111, can enhance the wind turbine pile's ability to withstand bearing capacity and horizontal resistance.

[0090] In the description of this application, it should be noted that the directional descriptions such as "top," "bottom," "up," "down," "vertical," and "horizontal" are relative to... Figure 1 The diagram of the negative pressure wind turbine pile is for illustrative purposes only and should not be construed as a limitation of this application.

[0091] In the description of the application, it is necessary to point out that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "linking" should be understood in a broad sense, for example, it can be fixed connection, or indirect connection through intermediate medium, or internal communication of two elements, or interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0092] In the description of the application, it is necessary to point out that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "linking" should be understood in a broad sense, for example, it can be fixed connection, or indirect connection through intermediate medium, or internal communication of two elements, or interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0093] The terms "first", "second", "third", "fourth" and the like in the description of the application and claims, and the above-mentioned drawings (if any) are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the application described herein, for example, can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device containing a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0094] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the application, and not to limit it; although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the application.

Claims

1. A negative pressure wind turbine pile, characterized in that, The device includes a foundation pile, a separator, and a removable component. The foundation pile has a cavity, and both the separator and the removable component are disposed within the cavity. The separator divides the cavity into a first cavity and a second cavity. The first cavity is located on the side of the second cavity near the bottom of the foundation pile. A first through hole is provided at the bottom of the foundation pile, communicating with the first cavity. A second through hole is provided at the top of the foundation pile, communicating with the second cavity. The extraction end of the extraction member is located in the first cavity, and the discharge end of the extraction member is located in the second cavity; the extraction member is configured to extract gas or liquid from the first cavity into the second cavity; The extraction component includes a pump body and a first tube body. The pump body is mounted on the partition and located in the second cavity. The partition is provided with a through hole. The first tube is provided with the through hole, the first end of the first tube is connected to the pump body, the second end of the first tube is placed in the first cavity, and the second end of the first tube is the extraction end. It also includes a protective component, which is mounted on the partition; the protective component has a protective cavity inside, and the pump body is located in the protective cavity; The second cavity has a through hole in its cavity wall, which connects the second cavity to the outside of the foundation pile; The through hole is located close to the separator; It also includes a reinforcing member, which is connected to both the cavity wall and the partition.

2. The negative pressure wind turbine pile according to claim 1, characterized in that, The extraction component also includes a second tube. The protective component has a protective hole that communicates with the protective cavity. The second tube passes through the protective hole. The first end of the second tube is connected to the outlet of the pump body. The second end of the second tube extends to the outside of the protective component and is located in the second cavity. The second end of the second tube is the discharge end.

3. The negative pressure wind turbine pile according to any one of claims 1-2, characterized in that, It also includes a grouting pipe, at least a portion of which is located in the second cavity; the partition is provided with a grouting hole, and one end of the grouting pipe is connected to the first cavity through the grouting hole.

4. A construction method for a negative pressure wind turbine pile, applicable to the negative pressure wind turbine pile as described in any one of claims 1-3, characterized in that, The construction method includes: The foundation pile is placed above the pile position. The foundation pile is lowered under force and enters the liquid surface and mud surface in sequence until the separator in the cavity of the foundation pile is above the mud surface and at a predetermined distance from the mud surface. When the bottom of the foundation pile enters the liquid surface, the extraction component is controlled to extract the gas in the first chamber into the second chamber, and the first chamber is filled with liquid in a negative pressure environment. When the bottom of the foundation pile enters the mud surface, the extraction component is controlled to extract the liquid in the first cavity into the second cavity.

5. The construction method of the negative pressure wind turbine pile according to claim 4, characterized in that, Controlling the descent of the foundation piles includes: When the bottom of the foundation pile enters the liquid surface, the foundation pile descends under its own weight. When the bottom of the foundation pile enters the mud surface, the pressure on the foundation pile from the pressure-applying component decreases.

6. The construction method of the negative pressure wind turbine pile according to claim 4, characterized in that, After the separator is positioned above the mud surface and at the predetermined distance from the mud surface, the method further includes: Control the grouting pipe to inject concrete into the first cavity.

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