Anchoring pile guiding structure and method thereof

Abstract

The application discloses an anchor pile guide structure and a method thereof, and the anchor pile guide structure comprises an anchor pile, a primary guide column, a group of secondary guide columns, a primary guide groove, a secondary guide groove and an anchor pile guide frame; the primary guide column and the group of secondary guide columns are arranged along the axial direction of the anchor pile, and the primary guide groove and the secondary guide groove are arranged at intervals along the inner cylinder wall of the anchor pile guide frame. The anchor pile guide structure provided by the application solves the problem that the anchor pile may deviate from the predetermined horizontal angle and orientation due to the influence of external environmental factors, such as water flow, waves and other factors, and the lack of limitation in the sinking process, so that the anchor pile can meet the requirement of the bow angle.

Description

Technical Field

[0001] This invention belongs to the field of marine oil engineering technology, and particularly relates to an anchor pile guiding structure and its method. Background Technology

[0002] Anchor piles, as a type of marine pile foundation, are suitable for complex soil conditions and have advantages such as low penetration resistance, large depth, and high bearing capacity. They are often used to anchor marine floating facilities (such as FPSOs, tension leg platforms, semi-submersible platforms, offshore floating wind power platforms, etc.) and can be applied in sea areas 1500m and deeper.

[0003] Anchor piles used in marine floating facility mooring systems have very high requirements for their heading after installation, as they are connected to suction anchor legs and floating facilities. Generally, the heading needs to be controlled within ±5 degrees. When anchor piles lack support, guidance, and restraint, they may deviate from the predetermined horizontal angle and orientation due to the influence of external environmental factors (such as water flow, waves, etc.).

[0004] During the sinking process, anchor piles may also be prone to instability due to a lack of restraint, such as rotation, lateral movement, or tilting. These errors may lead to inaccuracies and instability in the installation of anchor piles.

[0005] Therefore, there is an urgent need to design an anchor pile guiding structure to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide an anchor pile guiding structure that eliminates the need for a hydraulic control system, enabling the anchor pile to meet the heading angle requirements and solving the problems involved in the background art.

[0007] To achieve the above objectives, the specific technical solution of the anchor pile guiding structure of the present invention is as follows: An anchor pile guiding structure includes an anchor pile, a primary guide column, a set of secondary guide columns, a primary guide groove, a secondary guide groove, and an anchor pile guiding frame; A primary guide column and a set of secondary guide columns are set along the axial direction of the anchor pile, and primary guide grooves and secondary guide grooves are set at intervals along the inner wall of the anchor pile guide frame.

[0008] Furthermore, a primary guide column is installed along the axial direction of the anchor pile at a position 2000mm from the bottom of the anchor pile.

[0009] Furthermore, a set of secondary guide columns is installed at a position 4500mm from the primary guide column of the anchor pile, along the axial direction of the anchor pile.

[0010] Furthermore, a primary guide groove is provided on the upper part of the inner cylinder wall of the anchor pile guide frame. The primary guide groove is double funnel-shaped.

[0011] Furthermore, the top opening of the upper funnel of the primary guide channel is approximately 1 / 9 of the circumference of the inner cylinder of the anchor pile guide frame, i.e., 45 degrees. The length of the upper funnel is 4000mm, and there is a straight transition section with a length of 500mm and a spacing of 60mm between the upper and lower funnels.

[0012] Furthermore, a secondary guide groove is provided on the inner wall of the anchor pile guide frame, and the secondary guide groove is double Y-shaped.

[0013] Furthermore, the secondary guide grooves are all coaxial with the primary guide grooves, and the position of the secondary guide grooves on the inner wall of the anchor pile guide frame must be slightly higher than that of the primary guide grooves.

[0014] An anchor pile guidance method mainly includes the following steps: S1. The crane on the engineering vessel will lift and lower the anchor pile into the water until the bottom of the anchor pile is 2 meters above the top of the inner cylinder of the anchor pile guide frame. S2. By adjusting the ship's bow and the ROV's underwater propulsion, the orientation of the anchor piles is initially adjusted so that the angle between the primary guide post and the primary guide groove on the anchor pile is controlled within ±22.5 degrees. S3. With the assistance and observation of the ROV, the crane on the engineering vessel slowly lowers the anchor pile. The primary guide column of the anchor pile falls into the upper funnel opening of the primary guide groove. At this time, the secondary guide column is located on the upper part of the anchor pile guide frame and has not yet entered the anchor pile guide frame. S4. Continue to lower the anchor pile. After the primary guide column of the anchor pile passes through the upper funnel opening of the primary guide groove, it falls into the straight transition section of the primary guide groove. At this time, a set of secondary guide columns just enters the secondary guide groove. S5. Continue lowering the anchor piles. When the first secondary guide column falls into the straight transition section of the primary guide groove, the second secondary guide column enters the secondary guide groove. S6. Repeat S1-S5 until all secondary guide posts have passed through the primary guide groove and the secondary guide groove.

[0015] The anchor pile guiding structure of the present invention has the following advantages: This solves the problem that anchor piles may deviate from the predetermined horizontal angle and orientation due to the influence of external environmental factors such as water flow and waves, as well as the lack of restrictions during the sinking process, when the anchor piles are inserted, thus enabling the anchor piles to meet the heading angle requirements. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of a primary guide column and a set of secondary guide columns installed on the anchor pile; Figure 2 A schematic diagram showing the installation of primary and secondary guide grooves on the inner wall of the anchor pile guide frame; Figure 3 A schematic diagram of the anchor pile installation process; Figure 4This is a schematic diagram illustrating the principle of the two-stage guidance technology for anchor piles. Figure 5 This is a schematic diagram of the secondary guidance construction for anchor pile insertion.

[0017] Explanation of markings in the diagram: 1. Primary guide post; 2. A set of secondary guide posts; 21. First secondary guide post; 22. Second secondary guide post; 3. Primary guide groove; 4. Secondary guide groove; 5. Anchor pile; 6. Anchor pile guide frame. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0020] The following is a reference to the appendix. Figure 1 To be continued Figure 5 The anchor pile guiding structure of the present invention is described.

[0021] like Figures 1 to 5 As shown, the anchor pile guiding structure of the present invention includes an anchor pile 5, a primary guide column 1, a set of secondary guide columns 2, a primary guide groove 3, a secondary guide groove 4, and an anchor pile guiding frame 6; a primary guide column 1 and a set of secondary guide columns 2 are arranged along the axial direction of the anchor pile 5, and a primary guide groove 3 and a secondary guide groove 4 are arranged at intervals along the inner wall of the anchor pile guiding frame 6.

[0022] Furthermore, at a position 2000mm from the bottom of anchor pile 5, a primary guide column 1 is installed along the axial direction of anchor pile 5. Preferably, the primary guide column 1 has a width of 120mm and a relatively short length of approximately 500mm. The primary guide column 1 is made of high-strength steel plate and is fixed to anchor pile 5 by welding.

[0023] A set of secondary guide columns 2 is installed approximately 4500mm from the primary guide column 1 at the anchor pile 5, along the axial direction of the anchor pile 5. Preferably, the secondary guide columns are also 120mm wide and approximately 2500mm long. The secondary guide columns are also made of high-strength steel plate, and there can be 5 columns in a set, with the anchor pile guide frames 6 spaced 3500mm apart. Each secondary guide column is fixed to the anchor pile 5 by welding.

[0024] Furthermore, a primary guide groove 3 is provided on the upper part of the inner cylinder wall of the anchor pile guide frame 6. The primary guide groove 3 is double funnel-shaped.

[0025] More specifically, the top opening of the upper funnel of the primary guide channel 3 is approximately 1 / 9 of the circumference of the inner cylinder of the anchor pile guide frame 6, i.e., 45 degrees. The length of the upper funnel is 4000mm, and there is a straight transition section with a length of 500mm and a spacing of 60mm between the upper and lower funnels. Preferably, the primary guide channel 3 is made of high-strength steel plate and is fixed to the inner cylinder wall of the anchor pile guide frame 6 by welding.

[0026] Furthermore, a secondary guide groove 4 is provided on the inner wall of the anchor pile guide frame 6, and the secondary guide groove 4 is double Y-shaped.

[0027] More specifically, the secondary guide grooves 4 are all coaxial with the primary guide grooves 3, and the position of the secondary guide grooves 4 on the inner wall of the anchor pile guide frame 6 should be slightly higher than that of the primary guide grooves 1. Preferably, the primary guide grooves 1 have a straight transition section of about 1500mm in length and 60mm in spacing between the two Y-shaped sections.

[0028] This invention also discloses an anchor pile guiding method, which mainly includes the following steps: S1. The crane on the engineering vessel lifts and lowers the anchor pile 5 into the water until the bottom of the anchor pile 5 is 2 meters away from the top of the inner cylinder of the anchor pile guide frame 6. S2. By adjusting the ship's bow and the ROV's underwater propulsion, the orientation of the anchor pile 5 is initially adjusted so that the angle between the primary guide column 1 and the primary guide groove 3 on the anchor pile 5 is controlled within ±22.5 degrees. S3. With the assistance and observation of the ROV, the crane of the engineering vessel slowly lowers the anchor pile 5. The primary guide column 1 of the anchor pile 5 falls into the upper funnel opening of the primary guide groove 3. At this time, a set of secondary guide columns 2 are located on the upper part of the anchor pile guide frame 6, but have not yet entered the anchor pile guide frame. S4. Continue to lower the anchor pile 5. After the primary guide column 1 of the anchor pile 5 passes through the upper funnel opening of the primary guide groove 3, it falls into the straight transition section of the primary guide groove 3. At this time, a set of secondary guide columns 2 just enters the secondary guide groove 4. S5. Continue to lower the anchor pile 5. When the first secondary guide column 21 falls into the straight transition section of the primary guide groove 3, the second secondary guide column 22 enters the secondary guide groove 4. S6. Repeat S1-S5 to allow the remaining secondary guide columns to pass through the primary guide groove 3 and the secondary guide groove 4 in sequence, finally completing the insertion and guidance of the anchor pile 5.

[0029] Based on the anchor pile guiding structure, this invention solves the problem that the anchor pile 5 may deviate from the predetermined horizontal angle and orientation due to the influence of external environmental factors such as water flow and waves, as well as the lack of restrictions during the sinking process, when the anchor pile 5 is inserted, so that the anchor pile 5 can meet the requirements of the heading angle.

[0030] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An anchor pile guiding structure, characterized in that, Includes anchor piles, primary guide columns, a set of secondary guide columns, primary guide grooves, secondary guide grooves, and anchor pile guide frames; A primary guide column and a set of secondary guide columns are set along the axial direction of the anchor pile, and primary guide grooves and secondary guide grooves are set at intervals along the inner wall of the anchor pile guide frame.

2. The anchor pile guiding structure according to claim 1, characterized in that, A primary guide column is installed along the axial direction of the anchor pile at a position 2000mm from the bottom of the anchor pile.

3. The anchor pile guiding structure according to claim 1, characterized in that, A set of secondary guide columns is installed at a distance of 4500mm from the primary guide column of the anchor pile, along the axial direction of the anchor pile.

4. The anchor pile guiding structure according to claim 1, characterized in that, A primary guide groove is installed on the upper part of the inner cylinder wall of the anchor pile guide frame. The primary guide groove is double funnel-shaped.

5. The anchor pile guiding structure according to claim 4, characterized in that, The opening at the top of the upper funnel of the primary guide channel is about 1 / 9 of the circumference of the inner cylinder of the anchor pile guide frame, i.e., 45 degrees. The length of the upper funnel is 4000mm. There is a straight transition section with a length of 500mm and a spacing of 60mm between the upper funnel and the lower funnel.

6. The anchor pile guiding structure according to claim 1, characterized in that, A secondary guide groove is provided on the inner wall of the anchor pile guide frame. The secondary guide groove is double Y-shaped.

7. The anchor pile guiding structure according to claim 5 or 6, characterized in that, The secondary guide grooves are all coaxial with the primary guide grooves, and the position of the secondary guide grooves on the inner wall of the anchor pile guide frame must be slightly higher than that of the primary guide grooves.

8. A method for guiding anchor piles, comprising the anchor pile guiding structure as described in any one of claims 1-7, characterized in that, The main steps include: S1. The crane on the engineering vessel will lift and lower the anchor pile into the water until the bottom of the anchor pile is 2 meters above the top of the inner cylinder of the anchor pile guide frame. S2. By adjusting the ship's bow and the ROV's underwater propulsion, the orientation of the anchor piles is initially adjusted so that the angle between the primary guide post and the primary guide groove on the anchor pile is controlled within ±22.5 degrees. S3. With the assistance and observation of the ROV, the crane on the engineering vessel slowly lowers the anchor pile. The primary guide column of the anchor pile falls into the upper funnel opening of the primary guide groove. At this time, the secondary guide column is located on the upper part of the anchor pile guide frame and has not yet entered the anchor pile guide frame. S4. Continue to lower the anchor pile. After the primary guide column of the anchor pile passes through the upper funnel opening of the primary guide groove, it falls into the straight transition section of the primary guide groove. At this time, a set of secondary guide columns just enters the secondary guide groove. S5. Continue lowering the anchor piles. When the first secondary guide column falls into the straight transition section of the primary guide groove, the second secondary guide column enters the secondary guide groove. S6. Repeat S1-S5 until all secondary guide posts have passed through the primary guide groove and the secondary guide groove.

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