A pile anchor and a pile anchor construction method

Abstract

This application discloses a pile anchor and its construction method. The pile anchor is a split structure, including a pile body and a transition pile. The pile body is the part of the pile anchor that can be left in the soil, and the transition pile is the part that can be removed from the soil. Specifically, the pile body and the transition pile are detachably connected by a connector, so that the transition pile can be separated from the pile body after the pile body penetrates to a predetermined depth below the mud surface. That is, the separation of the pile body and the transition pile is achieved by a mechanical structure, which replaces the method of cutting the pile body by an underwater robot or diver in the prior art, thus reducing the installation cost of the pile anchor. At the same time, the transition pile can be completely removed, leaving only the pile body below the mud surface. The removed transition pile can be reused, further reducing the installation cost of the pile anchor. In addition, the transition pile transmits the force of the pile hammer to the pile body, driving the pile body to a predetermined depth below the mud surface. Compared with the method of cutting the pile body flush with the mud surface in the prior art, this reduces the impact of scouring on the pile anchor.

Description

Technical Field

[0001] This application relates to the field of marine engineering technology, and in particular to a pile anchor and a pile anchor construction method. Background Technology

[0002] Anchoring foundations are engineering equipment used to moor floating marine structures in the working sea area.

[0003] Anchoring foundations can be classified into gravity anchors, suction anchors, towed anchors, and pile anchors. Among them, pile anchors can withstand both horizontal and vertical loads simultaneously and are widely used in permanent mooring systems of marine engineering installations.

[0004] However, during construction, the anchor body of the pile anchor cannot be completely embedded in the seabed soil. In order to ensure the safety of the pile anchor and reduce the scouring depth of the pile anchor, it is usually necessary to use underwater robots or divers to cut off the pile body above the mud surface, which increases the installation cost of the pile anchor. Even if the pile body above the mud surface is cut off, the scouring problem of the pile anchor cannot be avoided, resulting in a reduction in the bearing capacity of the pile anchor.

[0005] Therefore, how to reduce the installation cost of pile anchors while minimizing the impact of pile anchor scouring has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] This application proposes a pile anchor to reduce installation costs and mitigate the impact of pile anchor scouring. This application also proposes a pile anchor construction method.

[0007] To achieve the above objectives, this application provides a pile anchor, comprising:

[0008] The pile body has an anchor head installed on it for connection with the mooring cable;

[0009] The transition pile is detachably connected to the pile body via a connector, so that the transition pile can be separated from the pile body after the pile body penetrates to a predetermined depth below the mud surface.

[0010] Preferably, in the above-mentioned pile anchor, the connecting member includes:

[0011] At least three connecting plates are arranged radially, with the inner sides of two adjacent connecting plates connected, and the outer sides of the connecting plates are provided with connecting grooves. The connecting plates are connected to the pile body.

[0012] The transition pile is provided with a first cavity, which can cover multiple connecting plates. A connecting strip is provided around the first cavity, and the transition pile is connected to the pile body through a connecting groove that mates with the connecting strip.

[0013] Preferably, in the above-mentioned pile anchor, a second cavity is provided on the pile body, the inner wall of the second cavity is connected to the outer side of the connecting plate, and the connecting groove of the connecting plate is located outside the second cavity.

[0014] Preferably, in the above-described pile anchor, the inner diameter of the first cavity is equal to the inner diameter of the second cavity, so that the outer edge of the connecting plate fits against the inner wall of the first cavity; and / or,

[0015] The diameter of the pile body is equal to the diameter of the transition pile.

[0016] Preferably, in the above-mentioned pile anchor, the length of the pile body is shorter than the length of the transition pile, and the length of the connecting plate along the axial direction of the pile body does not exceed the length of the pile body.

[0017] Preferably, in the above-mentioned pile anchor, the length of the connecting strip is greater than half the distance between two adjacent connecting grooves and less than the distance between two adjacent connecting grooves.

[0018] Preferably, in the above-mentioned pile anchor, the anchor head is a lifting lug.

[0019] A pile anchor construction method, applicable to the pile anchor disclosed in any of the above schemes, includes:

[0020] S1. The pile body and the transition pile are detachably connected by connectors to form a pile anchor.

[0021] S2. Lift the pile anchor to the target position and insert the pile body of the pile anchor into the mud surface to a predetermined depth;

[0022] S3. Separate the pile body and the transition pile, and pull out the transition pile.

[0023] Preferably, in the above-described pile-anchor construction method, the connecting member in step S1 includes:

[0024] At least three connecting plates are arranged radially, with the inner sides of two adjacent connecting plates connected, and the outer sides of the connecting plates are provided with connecting grooves. The connecting plates are connected to the pile body.

[0025] The transition pile is provided with a first cavity, which can cover multiple connecting plates. A connecting strip is provided around the first cavity, and the transition pile is connected to the pile body through a connecting groove that mates with the connecting strip.

[0026] Preferably, in the above-described pile-anchor construction method, the number of connecting grooves is equal to the number of connecting strips.

[0027] The pile anchor provided in this application is a split structure, including a pile body and a transition pile. The pile body is the part of the pile anchor that can be left in the soil, and the transition pile is the part that can be removed from the soil. Specifically, the pile body and the transition pile are detachably connected by a connector, so that the transition pile can be separated from the pile body after the pile body penetrates to a preset depth below the mud surface. That is, the separation of the pile body and the transition pile is achieved by a mechanical structure, which replaces the method of cutting the pile body by an underwater robot or diver in the prior art, thus reducing the installation cost of the pile anchor. At the same time, the transition pile can be completely removed, leaving only the pile body below the mud surface. The removed transition pile can be reused, further reducing the installation cost of the pile anchor. In addition, the transition pile transmits the force of the pile hammer to the pile body, driving the pile body to a preset depth below the mud surface. Compared with the method of cutting the pile body flush with the mud surface in the prior art, this reduces the impact of scouring on the pile anchor.

[0028] This application also discloses a pile anchor construction method applicable to the pile anchors described in the above scheme. Since the pile anchors possess the aforementioned technical effects, the pile anchors constructed using this method also possess the same technical effects, and will not be elaborated further here. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some examples or embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort, and this application can be applied to other similar scenarios based on the provided drawings. Unless obvious from the linguistic context or otherwise specified, the same reference numerals in the drawings represent the same structures or operations.

[0030] Figure 1 This is a structural schematic diagram of the pile anchor of this application;

[0031] Figure 2 This is a top view of the pile anchor of this application;

[0032] Figure 3 This is a structural schematic diagram of the connection between the pile body and the connector in this application;

[0033] Figure 4 This is a top view of the connection between the pile body and the connector in this application;

[0034] Figure 5 This is a structural schematic diagram of the transition pile in this application;

[0035] Figure 6 This is a top view of the transition pile in this application;

[0036] Figure 7 This is a schematic diagram of the pile anchor being driven into the soil according to this application;

[0037] Figure 8 This is a structural schematic diagram of the soil in which the pile anchor is placed in the pile body according to this application;

[0038] Figure 9 This is a flowchart of the pile anchor construction method of this application.

[0039] in:

[0040] 1-Pile body; 2-Anchor head; 3-Transition pile; 31-Connecting strip; 4-Connecting piece; 41-Connecting plate; 411-Connecting groove. Detailed Implementation

[0041] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the application and not intended to limit it. The described embodiments are only a part of the embodiments of the present application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without inventive effort are within the scope of protection of the present application.

[0042] It should be noted that, for ease of description, only the parts relevant to the application are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0043] Please see Figures 1-9 .

[0044] Some embodiments of this application disclose a pile anchor, including a pile body 1 and a transition pile 3, wherein the pile body 1 is provided with an anchor head 2 for connection with a mooring cable, and the transition pile 3 is detachably connected to the pile body 1 via a connector 4.

[0045] The pile body 1 and the transition pile 3 are connected as one unit by the connector 4 to form a pile anchor. During the lifting, lowering and penetration process of the pile anchor, the pile body 1 is always connected to the transition pile 3 through the connector 4. After the pile body 1 penetrates to a preset depth below the mud surface, the transition pile 3 is separated from the pile body 1 through the connector 4 and is taken out of the soil, leaving only the pile body 1 in the soil.

[0046] The pile anchor disclosed in this solution is a split structure, including a pile body 1 and a transition pile 3. The pile body 1 is the part of the pile anchor that can be left in the soil, and the transition pile 3 is the part that can be removed from the soil. Specifically, the pile body 1 and the transition pile 3 are detachably connected by a connector 4, so that the transition pile 3 can be separated from the pile body 1 after the pile body 1 penetrates to a preset depth below the mud surface. That is, the separation of the pile body 1 and the transition pile 3 is achieved by using a mechanical structure, which replaces the method of cutting the pile body 1 by an underwater robot or diver in the prior art, thus reducing the installation cost of the pile anchor. At the same time, the transition pile 3 can be completely removed, leaving only the pile body 1 below the mud surface. The removed transition pile 3 can be reused, further reducing the installation cost of the pile anchor. In addition, the transition pile 3 transmits the force of the pile hammer to the pile body 1, driving the pile body 1 to a preset depth below the mud surface. Compared with the method of cutting the pile body 1 and making it flush with the mud surface in the prior art, this reduces the impact of scouring on the pile anchor.

[0047] In some embodiments of this application, the connector 4 includes a connecting plate 41, a connecting groove 411, and a connecting strip 31. The connecting plate 41 is disposed on one of the pile body 1 and the transition pile 3. The connecting groove 411 is opened on the outer side of the connecting plate 41. The connecting strip 31 is disposed on the other of the pile body 1 and the transition pile 3. Specifically, a first cavity is opened on the pile body 1 or the transition pile 3, and the connecting strip 31 is disposed on the inner wall of the first cavity.

[0048] Figure 1 In the embodiment shown, a connecting plate 41 is provided on the pile body 1, and a connecting strip 31 is provided on the transition pile 3. The pile body 1 is connected to the connecting plate 41 through a connecting groove 411 that mates with the connecting strip 31. The transition pile 3 is covered by multiple connecting plates 41 through a first cavity. When the transition pile 3 is rotated in a first direction, the connecting strip 31 slides into the connecting groove 411, completing the connection between the transition pile 3 and the connecting plate 41. When the transition pile 3 is rotated further in the first direction or in a second direction opposite to the first direction, the connecting strip 31 slides out of the connecting groove 411, completing the separation between the transition pile 3 and the connecting plate 41.

[0049] There are at least three connecting plates 41, which are arranged radially. The inner sides of two adjacent connecting plates 41 are connected, and the outer sides of the connecting plates 41 are provided with connecting grooves 411.

[0050] Specifically, the inner sides of two adjacent connecting plates 41 can be directly welded together, or a connecting pipe coaxial with the radiation center can be provided, with the inner side of the connecting plate 41 connected to the outer wall of the connecting pipe.

[0051] Preferably, the connecting plate 41 is a rectangular plate, with the inner side and the outer side being two opposite sides of the rectangular plate; the multiple connecting plates 41 are of equal size, such that the outer sides of the multiple connecting plates 41 are located on the same circumference, and the first cavity is connected to the outer sides of the multiple connecting plates 41.

[0052] Preferably, the included angle between two adjacent connecting plates 41 is equal, the connecting strip 31 corresponds one-to-one with the connecting groove 411, and the connecting strip 31 is evenly distributed along the inner circumference of the first cavity.

[0053] Specifically, the connecting strip 31 is an arc-shaped strip, and the circumference of the connecting strip 31 is coaxial with the first cavity.

[0054] The connecting strip 31 is fixedly connected to the inner wall of the first cavity. There are various ways to fix the connecting strip 31 to the inner wall of the first cavity, such as welding the connecting strip 31 to the inner wall of the first cavity, bolting the connecting strip 31 to the inner wall of the first cavity, riveting the connecting strip 31 to the inner wall of the first cavity, bonding the connecting strip 31 to the inner wall of the first cavity, or other connection methods.

[0055] The diameter of the circumference of the outer edges of the multiple connecting plates 41 is no greater than the inner diameter of the first cavity, so that after the pile body 1 and the transition pile 3 are connected by the connecting plates 41 and the first cavity, the pile body 1 and the transition pile 3 can rotate relative to each other, so that the connecting strip 31 can be inserted into or slide out of the connecting groove 411. Specifically, when the connecting strip 31 slides into the connecting groove 411, the pile body 1 is connected to the transition pile 3, and when the connecting strip 31 slides out of the connecting groove 411, the pile body 1 is separated from the transition pile 3.

[0056] The pile anchor connector 4 disclosed in this application can separate the transition pile 3 from the pile body 1 simply by rotating the transition pile 3. Compared with the prior art, which uses robots or divers to cut the pile body 1, this effectively reduces the installation cost of the pile anchor.

[0057] Preferably, the diameter of the circumference of the outer edges of the multiple connecting plates 41 is equal to the inner diameter of the first cavity, and the outer edges of the connecting plates 41 can rotate along the inner wall of the first cavity, reducing the swaying of the transition pile 3 and the pile body 1 during rotation.

[0058] Furthermore, the diameter of pile body 1 is equal to the diameter of transition pile 3, so that after pile body 1 and transition pile 3 are connected, the outer wall of pile body 1 is flush with the outer wall of transition pile 3.

[0059] There are multiple ways to connect the connecting plate 41 to the end of the pile body 1.

[0060] In the first case, the end of the connecting plate 41 is directly connected to the end plane of the pile body 1;

[0061] The second method involves opening an embedding groove at the end of the pile body 1. The number of embedding grooves is equal to the number of connecting plates 41. Multiple connecting plates 41 are connected to each other and then inserted into the embedding groove.

[0062] The third type involves opening a second cavity at the end of the pile body 1, with one end of the connecting plate 41 located in the first cavity and the other end of the connecting plate 41 located in the second cavity. The outer side of the connecting plate 41 is welded to the inner wall of the second cavity.

[0063] When the connecting plate 41 is connected to the end of the pile body 1 using the third connection method, both the pile body 1 and the transition pile 3 can be hollow piles.

[0064] Preferably, the distance between the connecting strip 31 and the end face of the transition pile 3 is equal to the distance between the connecting groove 411 and the end face of the pile body 1. After the transition pile 3 is fitted over multiple connecting plates 41, the end face of the transition pile 3 abuts against the end face of the pile body 1. At this time, the connecting strip 31 and the connecting groove 411 are positioned in the axial direction of the transition pile 3 or the pile body 1. The end face of the transition pile 3 rotates against the end face of the pile body 1 to allow the connecting strip 31 to be inserted into or slide out of the connecting groove 411. In this embodiment, the end face of the transition pile 3 and the end face of the pile body 1 mutually limit each other. That is, when the upper end face of the pile body 1 abuts against the lower end face of the transition pile 3, the connecting groove 411 and the connecting strip 31 are at the same height. At this time, rotating the transition pile 3 allows the connecting strip 31 to slide into the connecting groove 411, reducing the difficulty of connecting the transition pile 3 and the pile body 1 and shortening the assembly time of the pile anchor.

[0065] The connection method between the connecting plate 41 and the end of the pile body 1 or the end of the transition pile 3 is not limited to the above embodiment, and can also be other connection methods.

[0066] While ensuring bearing capacity, the length of the pile body 1 anchored below the mud surface can be appropriately shortened. In some embodiments of this application, the length of the pile body 1 is shorter than the length of the transition pile 3. The transition pile 3 is used to lower the pile body 1 and, under the action of the pile hammer, penetrate the pile body 1 to a predetermined depth below the mud surface. The length of the transition pile 3 needs to be designed to be relatively long.

[0067] The length of the connecting plate 41 along the axis of the pile body 1 can be less than, equal to, or greater than the length of the pile body 1. The specific choice is determined by those skilled in the art based on actual needs. In some embodiments of this application, the length of the connecting plate 41 is less than the length of the pile body 1.

[0068] In some other embodiments of this application, the pile body 1 and the transition pile 3 are connected by shear pins. Specifically, the upper end of the pile body 1 and the lower end of the transition pile 3 are inserted and connected. Both the upper end of the pile body 1 and the lower end of the transition pile 3 are provided with pin holes. After the pile body 1 and the transition pile 3 are inserted, they are connected by shear pins that cooperate with the pin holes. After the pile body 1 penetrates to a preset depth below the mud surface, the transition pile 3 is rotated to break the shear pins and pull out the transition pile 3.

[0069] In some other embodiments of this application, the pile body 1 and the transition pile 3 are connected by threads. Specifically, the upper end of the pile body 1 is provided with external threads, and the lower end of the transition pile 3 is provided with internal threads. The pile body 1 and the transition pile 3 are connected by threads. After the pile body 1 penetrates to a preset depth below the mud surface, the transition pile 3 is rotated to separate the pile body 1 from the transition pile 3 and the transition pile 3 is pulled out.

[0070] In the embodiment where the pile body 1 and the transition pile 3 are connected by a connecting strip 31 and a connecting groove 411, the length of the connecting strip 31 is greater than half the distance between two adjacent connecting grooves 411, or the length of the connecting strip 31 can be less than half the distance between two adjacent connecting grooves 411, but it cannot be too small, so as to ensure the fit strength between the connecting strip 31 and the connecting groove 411.

[0071] However, the length of the connecting strip 31 must be less than the distance between two adjacent connecting grooves 411 to ensure that there is a gap between the adjacent connecting strips 31 in the circumferential direction of the pile body 1, and this gap must be greater than the thickness of the connecting plate 41 in the circumferential direction of the pile body 1 to ensure that the pile body 1 can be separated from the transition pile 3.

[0072] The number of anchor heads 2 on the pile body 1 is at least one. When multiple anchor heads 2 are installed on the pile body 1, the pile body 1 can serve as a shared anchoring foundation to reduce the cost of the mooring system.

[0073] In some embodiments of this application, the anchor head 2 is a lifting lug, which is welded to the outer wall of the pile body 1.

[0074] This application also discloses a pile anchor construction method applicable to the pile anchor described in the above scheme.

[0075] Pile and anchor construction methods include:

[0076] S1, pile body 1 and transition pile 3 are detachably connected by connector 4 to obtain pile anchor;

[0077] S2. Lift the pile anchor to the target position and use a pile hammer to drive the pile body 1 of the pile anchor into the preset depth below the mud surface;

[0078] S3, separate pile 1 and transition pile 3, and pull out transition pile 3.

[0079] The pile anchor of this application consists of two parts: pile body 1 and transition pile 3. Pile body 1 and transition pile 3 are connected as one unit by connector 4 to form pile anchor. During the lifting, lowering and penetration process of pile anchor, pile body 1 is always connected to transition pile 3 through connector 4. After pile body 1 penetrates to a preset depth below the mud surface, transition pile 3 is separated from pile body 1 through connector 4 and removed from the soil, leaving only pile body 1 in the soil.

[0080] By connecting the pile body 1 and the transition pile 3 in a detachable manner, the lower end of the pile body 1 is left in the soil, replacing the existing method of cutting the pile body 1 with an underwater robot or diver, thus reducing the installation cost of the pile anchor. At the same time, the transition pile 3 can be completely removed, leaving only the pile body 1 below the mud surface. The removed transition pile 3 can be reused, reducing design redundancy and further reducing the installation cost of the pile anchor. In addition, the transition pile 3 transfers the force of the pile hammer to the pile body 1, driving the pile body 1 into the predetermined depth below the mud surface. Compared with the existing method of cutting the pile body 1 flush with the mud surface, this reduces the impact of scouring on the pile anchor, and the bearing capacity of the pile anchor is not damaged.

[0081] In some embodiments of this application, the connector 4 includes a connecting plate 41, a connecting groove 411, and a connecting strip 31. The connecting plate 41 is disposed on the pile body 1, and the connecting groove 411 is opened on the outer side of the connecting plate 41. A first cavity is opened on the transition pile 3, and the connecting strip 31 is disposed on the inner wall of the first cavity.

[0082] There are at least three connecting plates 41, which are arranged radially, with the inner sides of adjacent connecting plates 41 connected. Specifically, the inner sides of adjacent connecting plates 41 can be directly welded together, or a connecting pipe coaxial with the radiation center can be provided, with the inner side of the connecting plate 41 welded to the outer wall of the connecting pipe.

[0083] Preferably, the connecting plate 41 is a rectangular plate, with the inner side and the outer side being two opposite sides of the rectangular plate; the multiple connecting plates 41 are of equal size, the outer sides of the multiple connecting plates 41 are located on the same circumference, and the circumference where the outer sides of the multiple connecting plates 41 are located is in clearance fit with the first cavity.

[0084] Preferably, the connecting strip 31 corresponds one-to-one with the connecting groove 411, the included angle between two adjacent connecting plates 41 is equal, and the connecting strip 31 is evenly distributed along the inner circumference of the first cavity.

[0085] The diameter of the circumference of the outer edges of the multiple connecting plates 41 is no greater than the inner diameter of the first cavity, so that after the pile body 1 and the transition pile 3 are connected by the connecting plates 41 and the first cavity, the pile body 1 and the transition pile 3 can rotate relative to each other, so that the connecting strip 31 can be inserted into or slide out of the connecting groove 411. Specifically, when the connecting strip 31 slides into the connecting groove 411, the pile body 1 is connected to the transition pile 3, and when the connecting strip 31 slides out of the connecting groove 411, the pile body 1 is separated from the transition pile 3.

[0086] Preferably, the diameter of the circumference of the outer edges of the multiple connecting plates 41 is equal to the inner diameter of the first cavity, and the outer edges of the connecting plates 41 can rotate along the inner wall of the first cavity, reducing the swaying of the transition pile 3 and the pile body 1 during rotation.

[0087] The pile anchor disclosed in this application can separate the transition pile 3 from the pile body 1 simply by rotating the transition pile 3. Compared with the prior art, which uses robots or divers to cut the pile body 1, this effectively reduces the installation cost of the pile anchor.

[0088] Furthermore, the diameter of pile body 1 is equal to the diameter of transition pile 3, so that after pile body 1 and transition pile 3 are connected, the outer wall of pile body 1 is flush with the outer wall of transition pile 3.

[0089] In the embodiment where the connector 4 includes a connecting plate 41, a connecting groove 411, and a connecting strip 31, the step of detachably connecting the pile body 1 and the transition pile 3 via the connector 4 in S1 specifically involves the transition pile 3 being covered by a first cavity outside the multiple connecting plates 41 of the pile body 1. Rotating the transition pile 3 causes the connecting strip 31 of the transition pile 3 to slide into the connecting groove 411 of the connecting plate 41. Here, the rotation of the transition pile 3 is a rotation about its own axis.

[0090] The specific steps for separating the pile body 1 and the transition pile 3 in S3 are as follows: rotate the transition pile 3 so that the connecting strip 31 of the transition pile 3 slides out of the connecting groove 411 of the connecting plate 41.

[0091] There are multiple ways to connect the connecting plate 41 to the end of the pile body 1.

[0092] In the first case, the end of the connecting plate 41 is directly connected to the end plane of the pile body 1;

[0093] The second method involves opening an embedding groove at the end of the pile body 1. The number of embedding grooves is equal to the number of connecting plates 41. Multiple connecting plates 41 are connected to each other and then inserted into the embedding groove.

[0094] The third type involves opening a second cavity at the end of the pile body 1, with one end of the connecting plate 41 located in the first cavity and the other end of the connecting plate 41 located in the second cavity. The outer side of the connecting plate 41 is welded to the inner wall of the second cavity.

[0095] When the connecting plate 41 is connected to the end of the pile body 1 using the third connection method, both the pile body 1 and the transition pile 3 can be hollow piles.

[0096] Preferably, the distance between the connecting strip 31 and the end face of the transition pile 3 is equal to the distance between the connecting groove 411 and the end face of the pile body 1. After the transition pile 3 is fitted over the multiple connecting plates 41, the end face of the transition pile 3 abuts against the end face of the pile body 1. At this time, the connecting strip 31 and the connecting groove 411 are positioned in the axial direction of the transition pile 3 or the pile body 1. The end face of the transition pile 3 rotates against the end face of the pile body 1 so that the connecting strip 31 is inserted into or slides out of the connecting groove 411. In this embodiment, the end face of the transition pile 3 and the end face of the pile body 1 mutually limit each other, reducing the difficulty of matching the connecting strip 31 and the connecting groove 411.

[0097] The connection method between the connecting plate 41 and the end of the pile body 1 or the end of the transition pile 3 is not limited to the above embodiment, and can also be other connection methods.

[0098] In some other embodiments of this application, the pile body 1 and the transition pile 3 are connected by shear pins. Specifically, the upper end of the pile body 1 and the lower end of the transition pile 3 are inserted and connected. Both the upper end of the pile body 1 and the lower end of the transition pile 3 are provided with pin holes. After the pile body 1 and the transition pile 3 are inserted, they are connected by shear pins that cooperate with the pin holes. After the pile body 1 penetrates to a preset depth below the mud surface, the transition pile 3 is rotated to break the shear pins and pull out the transition pile 3.

[0099] In some other embodiments of this application, the pile body 1 and the transition pile 3 are connected by threads. Specifically, the upper end of the pile body 1 is provided with external threads, and the lower end of the transition pile 3 is provided with internal threads. The pile body 1 and the transition pile 3 are connected by threads. After the pile body 1 penetrates to a preset depth below the mud surface, the transition pile 3 is rotated to separate the pile body 1 from the transition pile 3 and the transition pile 3 is pulled out.

[0100] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed, and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. The scope of this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described application concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A pile anchor, characterized in that, include: A pile body (1), on which an anchor head (2) is provided, the anchor head (2) being used to connect with a mooring cable; Transition pile (3), the transition pile (3) is detachably connected to the pile body (1) by a connector (4) so ​​that the transition pile (3) can be separated from the pile body (1) after the pile body (1) penetrates to a preset depth below the mud surface; The connector (4) includes: At least three connecting plates (41) are arranged radially, with the inner sides of two adjacent connecting plates (41) connected, and the outer sides of the connecting plates (41) are provided with connecting grooves (411), and the connecting plates (41) are connected to the pile body (1). The transition pile (3) is provided with a first cavity, which can cover multiple connecting plates (41). A connecting strip (31) is provided around the first cavity. The transition pile (3) is connected to the connecting plate (41) through a connecting groove (411) that cooperates with the connecting strip (31). The length of the connecting strip (31) is greater than half the distance between two adjacent connecting slots (411) and less than the distance between two adjacent connecting slots (411).

2. The pile anchor according to claim 1, characterized in that, A second cavity is provided on the pile body (1), the inner wall of the second cavity is connected to the outer side of the connecting plate (41), and the connecting groove (411) of the connecting plate (41) is located outside the second cavity.

3. The pile anchor according to claim 2, characterized in that, The inner diameter of the first cavity is equal to the inner diameter of the second cavity, so that the outer edge of the connecting plate (41) fits against the inner wall of the first cavity; and / or, The diameter of the pile body (1) is equal to the diameter of the transition pile (3).

4. The pile anchor according to claim 1, characterized in that, The length of the pile body (1) is shorter than the length of the transition pile (3), and the length of the connecting plate (41) along the axial direction of the pile body (1) does not exceed the length of the pile body (1).

5. The pile anchor according to claim 1, characterized in that, The anchor head (2) is a lifting lug.

6. A pile-anchor construction method, characterized in that, The pile anchor applicable to any one of claims 1-5 comprises: S1, the pile body (1) and the transition pile (3) are detachably connected by connector (4) to obtain the pile anchor; S2. Lift the pile anchor to the target position and insert the pile body (1) of the pile anchor into the mud surface to a predetermined depth; S3. Separate the pile body (1) and the transition pile (3), and pull out the transition pile (3).

7. The pile anchor construction method according to claim 6, characterized in that, The number of the connecting grooves (411) is equal to the number of the connecting strips (31).

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