Pile stabilizing auxiliary equipment suitable for offshore wind power pile foundation construction and construction method

Abstract

The invention discloses pile stabilizing auxiliary equipment suitable for offshore wind power pile foundation construction and a construction method.The pile stabilizing auxiliary equipment comprises a plurality of lifting supporting columns which are vertically arranged in sequence, and a first truss platform and a second truss platform which are horizontally arranged are connected between the lifting supporting columns; column feet are arranged at the bottoms of the multiple lifting supporting columns, one of the multiple lifting supporting columns is connected with a first operation platform and a second operation platform, and the first operation platform and the second operation platform are connected with opening-closing type variable-diameter hoop devices correspondingly. The first operation platform and the second operation platform are each provided with a positioning sensor and an angle sensor, the pile stabilizing auxiliary equipment can be accurately installed through data collected by the positioning sensors, lifting adjustment can be conducted on the multiple lifting supporting columns on the basis of data collected by the angle sensors, and therefore the first truss platform, the second truss platform and the third truss platform can be adjusted. And the second truss platform and the opening-closing type variable-diameter hoop device are parallel to the horizontal plane.

Description

Technical Field

[0001] The present invention relates to the technical field of water conservancy engineering, and in particular to a pile stabilization auxiliary device and a construction method suitable for offshore wind power pile foundation construction. Background Art

[0002] At present, the construction of pile foundations such as offshore wind power projects must ensure the verticality of the pile body. At present, the construction of such pile foundations mostly uses single clamps or floating pile stabilization equipment, which is not accurate enough in verticality control and complicated to operate, affecting the construction quality and progress. Since the verticality of offshore piles directly affects the installation quality of large-scale marine engineering equipment such as offshore wind power platforms, therefore, when driving piles, it is necessary to set up a pile stabilization platform to determine the position of the steel pipe piles and ensure the verticality of the steel pipe piles.

[0003] Due to the rapid development of offshore wind power and similar marine engineering in recent years, the demand for pile stabilization equipment has increased, but the existing technology has significant shortcomings. Although the currently commonly used single-hoop pile stabilization equipment can provide a certain degree of stability, its control accuracy of the verticality of the pile body is limited when facing complex sea conditions, and the adjustment process is cumbersome, affecting construction efficiency. Although the floating pile stabilization equipment is highly flexible, it also has shortcomings in ensuring the verticality of the pile body, and is easily affected by wind and waves, making it difficult to ensure construction accuracy. In addition, these devices often require a lot of manpower and material resources to cooperate during operation, which increases construction costs and time costs.

[0004] Therefore, the existing offshore pile foundation construction stabilization technology has the following disadvantages:

[0005] 1. Inaccurate verticality control: When using a single clamp or floating pile stabilization equipment, the control accuracy of the verticality of the pile body is limited, which makes it difficult to meet high-precision construction requirements.

[0006] 2. Complex operation and low efficiency: These devices are cumbersome when adjusting the verticality of the pile, and often require a lot of manpower and material resources, resulting in low construction efficiency. Summary of the invention

[0007] In view of the above-mentioned technical problems existing in the existing pile stabilization platforms, the purpose of the present invention is to provide a pile stabilization auxiliary equipment and construction method suitable for offshore wind power pile foundation construction, by adopting a double-hoop pile stabilization equipment control mode and ensuring that the platform has a leveling function to address the situation of inaccurate verticality control, and changing the original pile-insertion positioning mode of the pile stabilization platform, using the platform's own weight to lower it, so that it can be used as soon as it is lifted, reducing pile sinking positioning operations.

[0008] In order to achieve the above-mentioned purpose, the pile stabilization auxiliary equipment suitable for offshore wind power pile foundation construction provided by the present invention comprises a plurality of liftable support columns, the plurality of liftable support columns are vertically arranged in sequence, a first truss platform and a second truss platform arranged horizontally are connected between the plurality of liftable support columns, column feet are arranged at the bottom of the plurality of liftable support columns, the first truss platform and the second truss platform are supported on the sea surface by the column feet, a first operating platform and a second operating platform are connected to one of the plurality of liftable support columns, the first operating platform and the second operating platform are respectively connected to a horizontally arranged open-and-closed variable-diameter clamp device, and workers can stand The opening and closing type variable diameter clamp device can be controlled by standing on the first operating platform and the second operating platform, and the opening and closing of the opening and closing type variable diameter clamp device and the inner diameter of the clamp can be adjusted. The first operating platform or the second operating platform is provided with a positioning sensor and an azimuth sensor, and the first truss platform or the second truss platform is provided with an inclination sensor. The data collected by the positioning sensor and the azimuth sensor can enable the precise installation of the pile stabilization auxiliary equipment, and the lifting and lowering of a number of liftable support columns based on the collected data of the inclination sensor can make the first truss platform, the second truss platform and the opening and closing type variable diameter clamp device parallel to the horizontal plane.

[0009] Furthermore, there are three liftable support columns, and the three liftable support columns are arranged vertically in a right-angled triangle in sequence. The first truss platform and the second truss platform are right-angled triangle truss platforms composed of three trusses and are respectively connected to the three liftable support columns to connect the three liftable support columns. The second truss platform is connected to the end of the liftable support column where the column foot is set, and the first truss platform is set at the other end of the liftable support column.

[0010] Furthermore, two mutually perpendicular trusses in the first truss platform are respectively connected with expansion plates on both sides.

[0011] Furthermore, a ladder is connected between the first truss platform and the second truss platform.

[0012] Furthermore, the liftable support column includes an outer sleeve, an inner sleeve, and a lifter. The outer sleeve is a cylindrical structure with one end closed and the other end open. The outer sleeve can be connected to a first truss platform, a second truss platform, a first operating platform, and a second operating platform. A lifting lug is provided on the outer surface of the outer sleeve, and the lifting lug is used for lifting pile stabilization auxiliary equipment. The outer sleeve is movably sleeved on the inner sleeve through the open end, and the end of the inner sleeve away from the outer sleeve is connected to the column foot. The lifter is fixed to the closed end of the outer sleeve and the telescopic rod passes through the closed end to connect and move with the inner sleeve.

[0013] Furthermore, the column foot is a circular column foot, which is coaxially arranged with the inner sleeve, the bottom surface of the column foot gradually becomes thinner from the center to the edge, the bottom surface forms an upwardly inclined slope, and the column foot is provided with a plurality of through holes along the circumferential direction.

[0014] Furthermore, the openable and closable variable diameter clamp device includes an openable and closable clamp, a driving assembly, and a plurality of push-pull type tightening assemblies. The driving assembly is arranged on the first operating platform or the second operating platform, and the driving assembly is connected to the openable and closable clamp. The openable and closable clamp can be opened and closed by the driving assembly. The plurality of push-pull type tightening assemblies are circumferentially arranged on the openable and closable clamp in sequence, and the plurality of push-pull type tightening assemblies cooperate with each other to form an annular groove for clamping the pile foundation. The plurality of push-pull type tightening assemblies can adjust the diameter of the annular groove by moving.

[0015] Furthermore, a pulley is provided at the contact end between the push-pull type tightening assembly and the pile foundation.

[0016] Furthermore, the positioning sensor is a GPS sensor, and the inclination sensor is installed on the inclined truss in the first truss platform or the second truss platform.

[0017] In order to achieve the above object, the present invention provides a construction method of a pile stabilization auxiliary device suitable for offshore wind power pile foundation construction, which is used for any one of the above items, and the construction method comprises:

[0018] S1: Connect the liftable support column, the first truss platform and the second truss platform, connect the ladder between the first truss platform and the second truss platform, connect the first operating platform and the second operating platform to the outer sleeve, then install the retractable variable diameter clamp device to the first operating platform and the second operating platform, install the lift on the top of the outer sleeve, and install the column foot at the lower end of the inner sleeve;

[0019] S2: Install a positioning sensor and an azimuth sensor on the first operating platform or the second operating platform and install an inclination sensor on the first truss platform or the second truss platform. Then, according to the coordinates of the pile site, calculate the coordinates of the location where the positioning sensor is located and calculate the orientation of the equipment according to the azimuth sensor, so as to facilitate the subsequent platform hoisting and positioning;

[0020] S3: After the pile-sinking crane ship enters the point, the transport barge of the pile-stabilizing auxiliary equipment is moored to the crane ship through the anchor boat and the crane ship. The crane ship lifts the transport barge through the lifting lugs on the outer sleeve of the liftable support column, and then the transport barge evacuates the operation point. The crane ship lifts the pile-stabilizing auxiliary equipment and anchors it to the vicinity of the operation point. After the position is determined by the positioning sensor on the pile-stabilizing auxiliary equipment, the hoist is used to adjust the posture of the pile-stabilizing auxiliary equipment so that the pile-stabilizing auxiliary equipment is slowly lowered to the mud surface. Due to the shallow water depth, the first truss platform can remain above the water surface;

[0021] S4: After the pile stabilizing auxiliary equipment is lowered, the height of the liftable support column is adjusted according to the display result of the angle sensor, and the height of the lift is adjusted respectively, so that the horizontal inclination angle of the platform is less than 0.01°, ensuring the level of the pile stabilizing auxiliary equipment;

[0022] S5: After the leveling stage of the pile stabilization auxiliary equipment is completed, the operator can enter the first operating platform and the second operating platform, operate to open the clamp, adjust the diameter of the clamp pipe to ensure that the diameters of the upper and lower clamps are consistent, and then close the clamp. After the clamp adjustment is completed, start to pull the pile foundation and carry out pile sinking operations.

[0023] The pile stabilization auxiliary equipment and construction method provided by the present invention are suitable for offshore wind power pile foundation construction. By adopting a double-hoop pile stabilization equipment control mode and ensuring that the platform has a leveling function, in order to address the situation of inaccurate verticality control, the original pile-insertion positioning mode of the pile stabilization platform is changed, and the platform is lowered by its own weight to achieve use as soon as it is lifted, thereby reducing pile sinking positioning operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0025] Figure 1 A schematic diagram of the three-dimensional structure of the pile stabilization auxiliary equipment suitable for offshore wind power pile foundation construction provided by the present invention;

[0026] Figure 2 A schematic diagram of the top view of the structure of the pile stabilization auxiliary equipment suitable for offshore wind power pile foundation construction provided by the present invention;

[0027] Figure 3 A schematic cross-sectional view of the structure of a pile stabilization auxiliary device suitable for offshore wind power pile foundation construction provided by the present invention;

[0028] Figure 4 A schematic diagram of the partial structure of a liftable support column in the pile stabilization auxiliary equipment suitable for offshore wind power pile foundation construction provided by the present invention;

[0029] Figure 5 A cross-sectional view of the pile foot and the liftable support column of the pile stabilization auxiliary equipment suitable for offshore wind power pile foundation construction provided by the present invention when connected;

[0030] Figure 6 A cross-sectional view of a pile stabilization auxiliary device applicable to offshore wind power pile foundation construction provided by the present invention when the column foot is connected to a liftable support column;

[0031] Figure 7 A schematic diagram of a closed open-close variable diameter clamp device in a pile stabilization auxiliary device suitable for offshore wind power pile foundation construction provided by the present invention;

[0032] Figure 8 A schematic diagram of an openable and retractable variable diameter clamp device in a pile stabilization auxiliary device suitable for offshore wind power pile foundation construction provided by the present invention when it is opened;

[0033] Illustration Description:

[0034] A liftable support column 100, an outer sleeve 110, a lifting ear 111, an inner sleeve 120, a lifter 130, a first truss platform 200, an expansion plate 210, a ladder 220, a second truss platform 300, a column foot 400, a through hole 410, a first operating platform 500, a second operating platform 600, an openable and closable variable diameter clamp device 700, an openable and closable clamp 710, a drive assembly 720, and a push-pull tightening assembly 730. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below with reference to specific diagrams.

[0036] See also Figure 1 , which is a structural schematic diagram of the pile stabilization auxiliary equipment suitable for offshore wind power pile foundation construction provided by the present invention.

[0037] As can be seen from the figure, the pile stabilization auxiliary equipment suitable for offshore wind power pile foundation construction provided by the present invention includes three components: a plurality of liftable support columns 100, a first truss platform 200, and a second truss platform 300.

[0038] Among them, a plurality of liftable support columns 100 are arranged vertically in sequence, and a first truss platform 200 and a second truss platform 300 arranged horizontally are connected between the plurality of liftable support columns 100;

[0039] The bottom of the plurality of liftable support columns 100 is provided with column feet 400, and the first truss platform 200 and the second truss platform 300 are supported on the sea surface by the column feet 400;

[0040] One of the plurality of liftable support columns 100 is connected to a first operating platform 500 and a second operating platform 600, and the first operating platform 500 and the second operating platform 600 are respectively connected to a horizontally arranged open-and-close variable-diameter clamp device 700, and a worker can stand on the first operating platform 500 and the second operating platform 600 to control the open-and-close variable-diameter clamp device 700, and can control the opening and closing of the open-and-close variable-diameter clamp device 700 and adjust the inner diameter of the clamp;

[0041] The first operating platform 500 or the second operating platform 600 is provided with a positioning sensor and an azimuth sensor, and the first truss platform 200 or the second truss platform 300 is provided with an inclination sensor. The data collected by the positioning sensor and the azimuth sensor can enable the precise installation of the pile stabilization auxiliary equipment, and the lifting and lowering of a plurality of liftable support columns 100 are adjusted based on the collected data of the inclination sensor, so that the first truss platform 200, the second truss platform 300 and the open and close variable diameter clamp device 700 are parallel to the horizontal plane.

[0042] Compared with the existing technology, this solution adopts a double-hoop pile stabilization equipment control mode and ensures that the platform has a leveling function to address the situation of inaccurate verticality control. It also changes the original pile-insertion positioning mode of the pile stabilization platform and uses the platform's own weight to lower it, so that it can be used as soon as it is lifted, reducing pile sinking positioning operations.

[0043] Specifically, three liftable support columns 100 are adopted in the present scheme, and the three liftable support columns 100 are arranged vertically in a right-angled triangle in sequence. In coordination therewith, the first truss platform 200 and the second truss platform 300 are right-angled triangle truss platforms composed of three trusses and are respectively connected to the three liftable support columns 100 to connect the three liftable support columns 100. The second truss platform 300 is connected to the end of the liftable support column 100 where the column foot 400 is provided, and the first truss platform 200 is provided at the other end of the liftable support column 100.

[0044] The first truss platform 200 , the second truss platform 300 and the liftable support column 100 are detachably connected.

[0045] Furthermore, in order to facilitate the staff to carry out their work, Figure 2 The two mutually perpendicular trusses in the first truss platform 200 are respectively connected with expansion plates 210. The trusses can be widened through the expansion plates 210 to facilitate personnel operation. The staff can walk on the expansion plates 210 on both sides of the two mutually perpendicular trusses in the first truss platform 200 to move between the three liftable support columns 100.

[0046] Furthermore, if Figure 1 ,like Figure 3 A ladder 220 is connected between the first truss platform 200 and the second truss platform 300, and a person can climb from the second truss platform 300 to the first truss platform 200 through the ladder 220. In this example, the ladder 220 is preferably arranged between the mutually perpendicular trusses in the first truss platform 200 and the mutually perpendicular trusses in the second truss platform 300.

[0047] Furthermore, if Figure 4The liftable support column 100 includes an outer sleeve 110, an inner sleeve 120, and a lift 130. The outer sleeve 110 is a cylindrical structure with one end closed and the other end open. The outer sleeve 110 can be connected to the first truss platform 200, the second truss platform 300, the first operating platform 500, and the second operating platform 600. The outer surface of the outer sleeve 110 is provided with a lifting lug 111, which is used for lifting the pile stabilizing auxiliary equipment. The outer sleeve 110 is movably sleeved on the inner sleeve 120 through the open end, and the end of the inner sleeve 120 away from the outer sleeve 110 is connected to the column foot 400. The lift 130 is fixed to the closed end of the outer sleeve 110 and the telescopic rod passes through the closed end and is connected to the inner sleeve 120. The telescopic rod is driven by the lift 130 to move vertically, thereby driving the outer sleeve 110 to move vertically relative to the inner sleeve 120.

[0048] The lift 130 in this embodiment is preferably a worm gear lift or a hydraulic lift.

[0049] In this way, according to the data wirelessly transmitted by the positioning sensor, the inclination sensor and the azimuth sensor, and in coordination with the lifting and lowering adjustment of the liftable support column 100, the lifting and positioning and horizontal adjustment of the pile stabilizing auxiliary equipment can be carried out. Since the pile stabilizing platform is a rigid structure, it is only necessary to locate and observe the position of the positioning sensor at the pile stabilizing auxiliary equipment and the position of the azimuth sensor. The positioning sensor is used to position the pile stabilizing auxiliary platform, and the azimuth sensor is used to determine the direction of the positioning of the pile stabilizing auxiliary platform. After the positioning is completed, the three liftable support columns 100 are adjusted respectively according to the angle of the inclination sensor to keep the truss platform in an overall horizontal state, which can further ensure the verticality of the pile driving operation.

[0050] like Figure 5 , Figure 6 The column foot 400 is a circular column foot, which is coaxially arranged with the inner sleeve 120. The bottom surface of the column foot 400 gradually becomes thinner from the center to the edge, and the bottom surface forms an upward inclined slope. In addition, the column foot 400 is provided with a plurality of through holes 410 along the circumferential direction. Such a structure can reduce the adsorption force between the column foot 400 and the seabed when the pile stabilizing auxiliary equipment is displaced.

[0051] Furthermore, if Figure 7 , Figure 8The openable and closable variable diameter clamp device 700 includes an openable and closable clamp 710, a driving component 720, and a plurality of push-pull type tightening components 730. The driving component 720 is arranged on the first operating platform 500 or the second operating platform 600. The driving component 720 is connected to the openable and closable clamp 710. The openable and closable clamp 710 can be opened and closed by the driving component 720. The plurality of push-pull type tightening components 730 are sequentially circumferentially arranged on the openable and closable clamp 710. The plurality of push-pull type tightening components 730 cooperate with each other to form an annular groove for clamping the pile foundation. The plurality of push-pull type tightening components 730 can adjust the diameter of the annular groove by moving to adapt to pile foundations of different diameters.

[0052] In order to reduce the friction between the pile foundation and the push-pull jacking components 730 when the pile foundation is inserted, a pulley is provided at the contact end between the push-pull jacking component 730 and the pile foundation, so that the push-pull jacking component 730 contacts the pile foundation through the pulley.

[0053] Furthermore, the positioning sensor in this example is preferably a GPS sensor; the inclination sensor in this solution is preferably installed on the inclined truss in the first truss platform 200 or the second truss platform 300.

[0054] Furthermore, the GPS sensor can be installed on the first operating platform 500 or the second operating platform 600. The GPS sensor is used to determine the precise position of the pile stabilization auxiliary equipment. According to the coordinates of the pile site, the coordinates of the location where the GPS sensor is required to be placed are calculated to facilitate the subsequent platform hanging and positioning. It provides the precise coordinates of the equipment under the global positioning system and is the key to achieving precise installation and positioning.

[0055] Furthermore, in order to ensure the verticality of the pile, it is necessary to ensure the level of the openable and variable diameter clamp device 700. Since the openable and variable diameter clamp device 700 is rigidly connected, it is necessary to ensure that the first truss platform 200 and the second truss platform 300 are level. The inclined trusses in the first truss platform 200 and the second truss platform 300 are basically in the center of the truss. Ensuring that the inclination angle here is 0° can ensure that the entire first truss platform 200 and the second truss platform 300 are level. The inclination sensor can provide real-time feedback on the stability of the platform, providing a basis for adjusting the height of the liftable support column.

[0056] Furthermore, at least one azimuth sensor is installed on the first operating platform 500 or the second operating platform 600, which is used to determine the orientation of the open and close variable diameter clamp device 700, because the orientation of the entire wind turbine is determined by the design to ensure operation in the correct direction. In the construction of offshore wind power pile foundations, ensuring the correct orientation of the equipment is crucial for subsequent pile sinking operations.

[0057] Based on the above scheme, the pile stabilization auxiliary equipment for offshore wind power pile foundation construction is provided. This scheme also provides a construction method. The construction steps are as follows:

[0058] S1: Installation and construction, connect the liftable support column 100, the first truss platform 200, and the second truss platform 300, connect the ladder 220 between the first truss platform 200 and the second truss platform 300, connect the first operating platform 500 and the second operating platform 600 to the outer sleeve 110, and then install the retractable variable diameter clamp device 700 to the first operating platform 500 and the second operating platform 600, and install the elevator 130 on the top of the outer sleeve 110, and install the column foot 400 at the lower end of the inner sleeve 120;

[0059] S2: Install a positioning sensor and an azimuth sensor on the first operating platform 500 or the second operating platform 600 and install an inclination sensor on the first truss platform 200 or the second truss platform 300. Then, according to the coordinates of the pile site, calculate the coordinates of the location where the positioning sensor is located and calculate the orientation of the device according to the azimuth sensor, so as to facilitate the subsequent platform hoisting and positioning;

[0060] S3: After the pile-sinking crane ship enters the point, the transport barge of the pile-stabilizing auxiliary equipment is moored to the crane ship through the anchor boat and the crane ship. The crane ship lifts the transport barge through the lifting lug 111 on the outer sleeve 110 of the liftable support column 100, and then the transport barge evacuates the operation point. The crane ship lifts the pile-stabilizing auxiliary equipment and anchors it to the vicinity of the operation point. After the position is determined by the positioning sensor on the pile-stabilizing auxiliary equipment, the hoist is used to adjust the posture of the pile-stabilizing auxiliary equipment so that the pile-stabilizing auxiliary equipment is slowly lowered to the mud surface. Due to the shallow water depth, the first truss platform 200 can remain above the water surface;

[0061] S4: After the pile stabilizing auxiliary equipment is lowered, the height of the liftable support column 100 is adjusted according to the display result of the angle sensor, and the height of the lift 130 is adjusted respectively, so that the horizontal inclination angle of the platform is less than 0.01°, ensuring the level of the pile stabilizing auxiliary equipment;

[0062] S5: After the leveling stage of the pile stabilizing auxiliary equipment is completed, the operator can enter the first operating platform 500 and the second operating platform 600, operate to open the clamp 710, adjust the diameter of the clamp 710 to ensure that the diameters of the upper and lower clamps 710 are consistent, and then close the clamp 710. After the adjustment of the clamp 710 is completed, start to pull the pile foundation and perform the pile sinking operation.

[0063] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A pile stabilization auxiliary equipment suitable for offshore wind power pile foundation construction, characterized in that: The invention comprises a plurality of liftable support columns, which are arranged vertically in sequence, a first truss platform and a second truss platform arranged horizontally are connected between the plurality of liftable support columns, column feet are arranged at the bottom of the plurality of liftable support columns, the first truss platform and the second truss platform are supported on the sea surface by the column feet, a first operating platform and a second operating platform are connected to one of the plurality of liftable support columns, the first operating platform and the second operating platform are respectively connected to a horizontally arranged opening and closing variable diameter clamp device, and a staff member can stand on the first operating platform and the second operating platform to The opening and closing type variable diameter clamp device is controlled to control the opening and closing of the opening and closing type variable diameter clamp device and adjust the inner diameter of the clamp. The first operating platform or the second operating platform is provided with a positioning sensor and an azimuth sensor, and the first truss platform or the second truss platform is provided with an inclination sensor. The data collected by the positioning sensor and the azimuth sensor can enable the precise installation of the pile stabilization auxiliary equipment, and the data collected by the inclination sensor can be used to lift and lower a number of liftable support columns, so that the first truss platform, the second truss platform and the opening and closing type variable diameter clamp device are parallel to the horizontal plane.

2. The pile stabilization auxiliary equipment suitable for offshore wind power pile foundation construction according to claim 1 is characterized in that: There are three liftable support columns, which are arranged vertically in a right-angled triangle in sequence. The first truss platform and the second truss platform are right-angled triangle truss platforms composed of three trusses and are respectively connected to the three liftable support columns to connect the three liftable support columns. The second truss platform is connected to the end of the liftable support column where the column foot is set, and the first truss platform is set at the other end of the liftable support column.

3. The pile stabilization auxiliary equipment suitable for offshore wind power pile foundation construction according to claim 2 is characterized in that: Two sides of two mutually perpendicular trusses in the first truss platform are respectively connected with expansion plates.

4. The pile stabilization auxiliary equipment suitable for offshore wind power pile foundation construction according to claim 1 is characterized in that: A ladder is connected between the first truss platform and the second truss platform.

5. The pile stabilization auxiliary equipment suitable for offshore wind power pile foundation construction according to claim 1 is characterized in that: The liftable support column includes an outer sleeve, an inner sleeve, and a lifter. The outer sleeve is a cylindrical structure with one end closed and the other end open. The outer sleeve can be connected to a first truss platform, a second truss platform, a first operating platform, and a second operating platform. A lifting lug is provided on the outer surface of the outer sleeve, and the lifting lug is used for lifting pile stabilization auxiliary equipment. The outer sleeve is movably sleeved on the inner sleeve through the open end, and the end of the inner sleeve away from the outer sleeve is connected to the column foot. The lifter is fixed to the closed end of the outer sleeve and the telescopic rod passes through the closed end to connect and move with the inner sleeve.

6. The pile stabilization auxiliary equipment suitable for offshore wind power pile foundation construction according to claim 5 is characterized in that: The column foot is a circular column foot, which is coaxially arranged with the inner sleeve. The bottom surface of the column foot gradually becomes thinner from the center to the edge, and the bottom surface forms an upwardly inclined slope. The column foot is also provided with a plurality of through holes along the circumferential direction.

7. The pile stabilization auxiliary equipment suitable for offshore wind power pile foundation construction according to claim 1 is characterized in that: The openable and closable variable diameter clamp device includes an openable and closable clamp, a driving component, and a plurality of push-pull type tightening components. The driving component is arranged on the first operating platform or the second operating platform, and is connected to the openable and closable clamp. The openable and closable clamp can be opened and closed by the driving component. The plurality of push-pull type tightening components are sequentially arranged circumferentially on the openable and closable clamp, and the plurality of push-pull type tightening components cooperate with each other to form an annular groove for clamping the pile foundation. The plurality of push-pull type tightening components can adjust the diameter of the annular groove by moving.

8. The pile stabilization auxiliary equipment suitable for offshore wind power pile foundation construction according to claim 7 is characterized in that: The contact end of the push-pull type tightening assembly and the pile foundation is provided with a pulley.

9. The pile stabilization auxiliary equipment suitable for offshore wind power pile foundation construction according to claim 1, characterized in that: The positioning sensor is a GPS sensor, and the inclination sensor is installed on the inclined truss in the first truss platform or the second truss platform.

10. A construction method for pile stabilization auxiliary equipment suitable for offshore wind power pile foundation construction, characterized in that: include: S1: Connect the liftable support column, the first truss platform and the second truss platform, connect the ladder between the first truss platform and the second truss platform, connect the first operating platform and the second operating platform to the outer sleeve, then install the retractable variable diameter clamp device to the first operating platform and the second operating platform, install the lift on the top of the outer sleeve, and install the column foot at the lower end of the inner sleeve; S2: Install a positioning sensor and an azimuth sensor on the first operating platform or the second operating platform and install an inclination sensor on the first truss platform or the second truss platform. Then, according to the coordinates of the pile site, calculate the coordinates of the location where the positioning sensor is located and calculate the orientation of the equipment according to the azimuth sensor, so as to facilitate the subsequent platform hoisting and positioning; S3: After the pile-sinking crane ship enters the point, the transport barge of the pile-stabilizing auxiliary equipment is moored to the crane ship through the anchor boat and the crane ship. The crane ship lifts the transport barge through the lifting lugs on the outer sleeve of the liftable support column, and then the transport barge evacuates the operation point. The crane ship lifts the pile-stabilizing auxiliary equipment and anchors it to the vicinity of the operation point. After the position is determined by the positioning sensor on the pile-stabilizing auxiliary equipment, the hoist is used to adjust the posture of the pile-stabilizing auxiliary equipment so that the pile-stabilizing auxiliary equipment is slowly lowered to the mud surface. Due to the shallow water depth, the first truss platform can remain above the water surface; S4: After the pile stabilizing auxiliary equipment is lowered, the height of the liftable support column is adjusted according to the display result of the angle sensor, and the height of the lift is adjusted respectively, so that the horizontal inclination angle of the platform is less than 0.01°, ensuring the level of the pile stabilizing auxiliary equipment; S5: After the leveling stage of the pile stabilization auxiliary equipment is completed, the operator can enter the first operating platform and the second operating platform, operate to open the clamp, adjust the diameter of the clamp pipe to ensure that the diameters of the upper and lower clamps are consistent, and then close the clamp. After the clamp adjustment is completed, start to pull the pile foundation and carry out pile sinking operations.

Images