Efficient, energy-saving and environment-friendly vibrating pile hammer for ocean pile foundation engineering

Abstract

The invention relates to the technical field of ocean pile foundation engineering, and particularly discloses an efficient, energy-saving and environment-friendly vibrating pile hammer for ocean pile foundation engineering. The connecting frame is connected with the bottom end of the vibrating pile hammer main body through a fastener; the pile lifting device is rotationally connected with the connecting frame, and the pile lifting device is used for feeding, turning, clamping and sinking the pile; and the driving mechanism is located in the connecting frame, and the driving mechanism is used for adjusting the overturning angle of the pile lifting device. Horizontal pile feeding, pile turning, pile clamping and pile sinking are integrated, synchronous turning of a vibration pile hammer and a pile lifting device is omitted, the construction time is shortened, the dynamic coefficient of the working load of a steel wire rope under the surge working condition is reduced, the service life of the steel wire rope is prolonged, and a negative rigidity vibration reduction structure is arranged; and the abrasion of the vibration pile hammer to the surfaces of a ship body or other carriers in the transportation or construction process is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of marine pile foundation engineering, and particularly relates to an efficient, energy-saving and environment-friendly vibrating pile hammer for marine pile foundation engineering. Background Art

[0002] The vibrating pile hammer in marine engineering is an efficient and environment-friendly pile foundation construction equipment, which is widely used in pile driving and pile pulling operations of pile foundations in projects such as offshore wind power, cross-sea bridges, port terminals, etc. When the vibrating hammer and the pile body are installed, it is necessary to clamp the pile body lying flat on the ground through a crane and a pile turnover device, and turn the pile body to a vertical direction with respect to the ground, and then lift the pile body to the position where pile driving needs to be carried out and fix the pile body. Finally, the vibrating hammer or impact hammer is displaced to the pile body through the crane to carry out pile driving. In the existing construction process, installing a pile requires the following steps: horizontal pile feeding, pile turning, pile clamping, pile sinking, etc. Among them, horizontal pile feeding, pile turning, pile clamping, and pile sinking are respectively completed by different special equipment. During different construction steps, different special equipment needs to be replaced, which will greatly prolong the construction time and reduce the construction efficiency. To solve the above problems, the pile turnover device is directly connected to the vibrating pile hammer to complete the turning and vibration sinking of the pile body from horizontal to vertical.

[0003] Chinese Patent (CN215406049U) discloses a vibrating hammer convenient for turning the pile body, including a driving and vibration damping mechanism, a gearbox and a pile body clamping mechanism. A lifting mechanism for connecting a steel wire rope is arranged between the driving and vibration damping mechanism and the gearbox. The lifting mechanism includes connecting plates arranged on both sides of the vibrating hammer. The driving and vibration damping mechanism is provided with an extension block, and the connecting plate is connected to the extension block. The connecting plate is installed with a driven gear. One end of the driven gear is provided with an annular cavity for winding the steel wire rope. The driving and vibration damping mechanism is provided with a mounting column corresponding to one end of the driven gear, and a driving gear meshing with the driven gear is arranged on the mounting column. A driving hydraulic motor for driving the driving gear to rotate is arranged on the driving gear.

[0004] However, there are some drawbacks in the above related technologies. For example, during the construction process of the vibrating pile hammer and the pile body, due to the large overall weight after the combination of the vibrating pile hammer and the fixture, and the vibrating pile hammer needs to be turned 90° as a whole, the safety and stability during the construction process are not high enough, and the construction cost is relatively large; the dynamic coefficient of the working load of the steel wire rope is relatively large under surge conditions, and the service life of the steel wire rope is not long enough; the vibrating pile hammer vibrates under external forces during transportation or construction, which is likely to cause wear to the surface of the hull or other carriers. Summary of the Invention

[0005] In order to solve the above problems existing in the prior art, the present invention provides an efficient, energy-saving and environment-friendly vibrating pile hammer for marine pile foundation engineering, which can solve the problems raised in the above background art.

[0006] The object of the present invention can be achieved by the following technical solutions:

[0007] An efficient energy-saving and environment-friendly vibrating pile hammer for marine pile foundation engineering, comprising:

[0008] The main body of the vibrating pile hammer;

[0009] A connecting frame, which is connected to the bottom end of the main body of the vibrating pile hammer through fasteners;

[0010] A pile hanging device, which is rotatably connected to the connecting frame and is used for feeding piles, turning piles, clamping piles, and driving piles;

[0011] A driving mechanism, which is located inside the connecting frame and is used for adjusting the turning angle of the pile hanging device;

[0012] A locking mechanism, which is located inside the connecting frame and is used for fixing the pile hanging device;

[0013] A vibration damping device, which includes a base. Four limiting cylinders are arranged on one side of the base close to the pile hanging device. A limiting rod is slidably installed inside the limiting cylinder. One end of the limiting rod away from the base is fixedly connected to the pile hanging device. A chute is arranged on one side of the base close to the pile hanging device, and the chute is arranged in an X shape. Four magnetic blocks are slidably arranged on the base through the chute. Two symmetrically arranged limiting blocks are arranged on the side wall of the pile hanging device. Bevels for sliding and fitting are respectively arranged on the sides of the limiting block and the magnetic block close to each other. The magnetic poles on the sides of the four magnetic blocks away from the limiting block are of the same name, and a positive stiffness structure is arranged between the four magnetic blocks.

[0014] Preferably, the pile hanging device includes a composite conical column. An inner support type clamp is arranged inside the composite conical column. The gasket of the inner support type clamp penetrates through the side wall of the composite conical column. A hanging block is arranged in the middle at one end of the composite conical column away from the conical part. A push-pull block is arranged on the circumferential side wall of the composite conical column. A locking block is arranged at one end of the composite conical column away from the conical part.

[0015] Preferably, the connecting frame includes a box shell. The bottom end of the box shell is open. The top end of the box shell is fixedly connected to the main body of the vibrating pile hammer through fasteners. A support plate is arranged on the top wall of the box shell. The bottom end of the support plate is rotatably connected to the hanging block through a pin shaft.

[0016] Preferably, both ends of the support plate in the length direction are fixedly connected to the inner wall of the box shell, and a plurality of reinforcing ribs are arranged at the connection positions of both ends of the support plate in the length direction and the box shell.

[0017] Preferably, the driving mechanism includes a telescopic oil cylinder. The cylinder body of the telescopic oil cylinder is rotatably mounted on the top wall of the box shell through a mounting seat. A connecting block is provided at the end of the piston rod of the telescopic oil cylinder, and the connecting block is rotatably connected to the push-pull block through a pin shaft.

[0018] Preferably, the locking mechanism includes a right-angle frame. The right-angle frame is mounted on the side wall of the support plate. Two limiting plates are provided at the bottom end of the horizontal section of the right-angle frame. The two limiting plates are matched with the locking block. A pin shaft oil cylinder is provided on the side wall of the vertical section of the right-angle frame, and the pin shaft of the pin shaft oil cylinder penetrates through the limiting plate and the locking block.

[0019] Preferably, the limiting rod is arranged in a T-shaped cross-section along the axial direction, the inner channel of the limiting cylinder is arranged in a T-shaped cross-section along the axial direction, and the limiting cylinder is matched with the limiting rod.

[0020] Preferably, the sliding groove is arranged in a "convex" shape in the axial cross-section. An inverted T-shaped column is provided at the bottom end of the magnetic block, and the sliding groove is matched with the T-shaped column of the magnetic block.

[0021] Preferably, the positive stiffness structure includes four groups of compression springs and viscous dampers. The compression springs are installed between two adjacent magnetic blocks, and the viscous dampers are installed between two adjacent magnetic blocks.

[0022] The beneficial effects of the present invention are as follows:

[0023] 1. By providing a vibrating pile hammer main body, a connecting frame and a pile hanging device, the pile hanging device is inserted into the pile body driven by the steel wire rope and the vibrating pile hammer main body to complete pile feeding. The pile hanging device is fixed to the pile body through an inner support type clamp to complete pile clamping. The steel wire rope hoists the vibrating pile hammer main body at a set speed. At the same time, the telescopic oil cylinder cooperates with the connecting block to drive the pile hanging device to rotate around the suspension block at a set speed. After rotating 90 degrees, the pile turning is completed. The pile body sinks into the soil under the vibration action of the vibrating pile hammer main body, the connecting frame and the pile hanging device and its own gravity to complete pile sinking;

[0024] The beneficial effects that can be obtained are: integrating horizontal pile feeding, pile turning, pile clamping and pile sinking, canceling the synchronous flipping of the vibrating pile hammer itself and the pile hanging device, increasing the stability and safety in the use of the vibrating pile hammer, shortening the construction time and reducing the construction cost.

[0025] 2. By providing a driving mechanism and a locking mechanism, when the vibrating pile hammer completes a single pile sinking and waits for the subsequent pile feeding process, the locking mechanism cancels the fixation of the pile hanging device, and the driving mechanism drives the axis of the pile hanging device to be perpendicular to the steel wire rope, and the pile hanging device is placed on the hull or the ground through the steel wire rope;

[0026] The beneficial effects that can be obtained are: improving the leveling efficiency of the vibrating pile hammer, reducing the dynamic coefficient of the working load of the steel wire rope in the surge condition, and prolonging the service life of the steel wire rope.

[0027] 3. By setting up a vibration damping device, when the pile hoist vibrates on the hull or other vehicles, when the pile hoist moves towards the base, the four limit rods slide in the four limit cylinders respectively. The two limit blocks squeeze the four magnetic blocks closer to each other through the inclined surfaces, the compression spring is compressed, and the elastic force changes linearly. The repulsive force between the two magnetic blocks with the same name and facing each other increases as the magnetic blocks approach. The compression spring and the magnetic blocks form a negative stiffness structure, which greatly reduces the resonance frequency. At the same time, the viscous damper realizes energy dissipation. Cooperating with the negative stiffness structure, it improves the damping ratio, reduces the vibration response of the pile hoist, and reduces the wear of the vibrating pile hammer on the surface of the hull or other carriers.

[0028] The beneficial effects that can be obtained are: having a negative stiffness vibration damping structure, reducing the wear of the vibrating pile hammer on the surface of the hull or other carriers during transportation or construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] For the convenience of those skilled in the art to understand, the present invention will be further described below in conjunction with the accompanying drawings.

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 It is a schematic diagram of the overall pile feeding state of the present invention;

[0032] Figure 3 It is an installation structure diagram of the pile hoist of the present invention;

[0033] Figure 4 It is a schematic diagram of the pile feeding state of the pile hoist of the present invention;

[0034] Figure 5 It is an installation structure diagram of the driving mechanism of the present invention;

[0035] Figure 6 It is an installation structure diagram of the locking structure of the present invention;

[0036] Figure 7 It is an installation structure diagram of the limit cylinder and the base of the present invention;

[0037] Figure 8 It is an installation structure diagram of the limit rod and the limit block of the present invention;

[0038] Figure 9 It is an installation structure diagram of the positive stiffness structure of the present invention;

[0039] Figure 10 It is an installation structure diagram of the magnetic block of the present invention.

[0040] Description of the reference numerals:

[0041] In the figure: 1. Vibration pile hammer main body; 2. Connecting frame; 21. Box shell; 22. Support plate; 23. Reinforcing rib; 3. Pile hanging device; 31. Composite conical column; 32. Inner support type clamp; 33. Suspension block; 34. Push-pull block; 35. Locking block; 4. Driving mechanism; 41. Telescopic oil cylinder; 42. Connecting block; 5. Locking mechanism; 51. Right-angle frame; 52. Limiting plate; 53. Pin oil cylinder; 6. Vibration damping device; 61. Base; 62. Limiting cylinder; 63. Limiting rod; 64. Chute; 65. Magnet; 66. Limiting block; 71. Compression spring; 72. Viscous damper. Detailed implementation manners

[0042] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following describes in clear and complete detail the specific implementation manners, structures, features and their effects of the present invention in combination with the accompanying drawings and preferred embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0043] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "inside", "outside", etc. is based on the orientation or position shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, a specific orientation structure and operation, and thus should not be construed as a limitation to the present application.

[0044] Refer to Figures 1-9 , a highly efficient, energy-saving and environment-friendly vibration pile hammer for marine pile foundation engineering disclosed by the present invention, which includes a vibration pile hammer main body 1. The vibration pile hammer main body 1 includes a motor, an exciter, a gripper and a vibration damping structure.

[0045] A connecting frame 2, the connecting frame 2 is connected to the bottom end of the vibration pile hammer main body 1 through fasteners. The connecting frame 2 includes a box shell 21. The bottom end of the box shell 21 is open. The top end of the box shell 21 is fixedly connected to the vibration pile hammer main body 1 through fasteners. A support plate 22 is arranged on the top wall of the box shell 21. Both ends of the support plate 22 in the length direction are fixedly connected to the inner wall of the box shell 21. A plurality of reinforcing ribs 23 are arranged at the connection positions of both ends of the support plate 22 in the length direction with the box shell 21.

[0046] Pile hanging device 3, the pile hanging device 3 is rotatably connected to the connecting frame 2. The pile hanging device 3 is used for feeding piles, turning piles, clamping piles, and driving piles. The pile hanging device 3 includes a composite conical column 31. An inner support type clamp 32 is arranged inside the composite conical column 31. The gasket of the inner support type clamp 32 is arranged through the side wall of the composite conical column 31. A suspension block 33 is arranged in the middle at one end of the composite conical column 31 away from the conical part. The bottom end of the support plate 22 is rotatably connected to the suspension block 33 through a pin shaft. A push-pull block 34 is arranged on the circumferential side wall of the composite conical column 31. A locking block 35 is arranged at one end of the composite conical column 31 away from the conical part. The inner support type clamp 32 is a prior art. The inner support type clamp 32 includes: an expansion module, a transmission mechanism, a friction component, and a locking device. Among them, the expansion module includes a hydraulic cylinder, the transmission mechanism includes a connecting rod, the friction component includes a gasket with a high friction coefficient, and the locking device includes a hydraulic pressure maintaining system.

[0047] Driving mechanism 4, the driving mechanism 4 is located inside the connecting frame 2. The driving mechanism 4 is used to adjust the turning angle of the pile hanging device 3. The driving mechanism 4 includes a telescopic oil cylinder 41. The cylinder body of the telescopic oil cylinder 41 is rotatably installed on the top wall of the box shell 21 through a mounting seat. A connecting block 42 is arranged at the end of the piston rod of the telescopic oil cylinder 41. The connecting block 42 is rotatably connected to the push-pull block 34 through a pin shaft.

[0048] Locking mechanism 5, the locking mechanism 5 is located inside the connecting frame 2. The locking mechanism 5 is used to fix the pile hanging device 3. The locking mechanism 5 includes a right-angle frame 51. The right-angle frame 51 is installed on the side wall of the support plate 22. Two limiting plates 52 are arranged at the bottom end of the horizontal section of the right-angle frame 51. The two limiting plates 52 are matched with the locking block 35. A pin shaft oil cylinder 53 is arranged on the side wall of the vertical section of the right-angle frame 51. The pin shaft of the pin shaft oil cylinder 53 penetrates through the limiting plate 52 and the locking block 35.

[0049] Vibration damping device 6, the vibration damping device 6 includes a base 61, on one side of the base 61 close to the pile hanging device 3, four limiting cylinders 62 are provided, a limiting rod 63 is slidably installed in the limiting cylinder 62, the axial cross-section of the limiting rod 63 is T-shaped, the channel in the limiting cylinder 62 is T-shaped in axial cross-section, the limiting cylinder 62 matches the limiting rod 63, one end of the limiting rod 63 away from the base 61 is fixedly connected to the pile hanging device 3, on one side of the base 61 close to the pile hanging device 3, a chute 64 is provided, the chute 64 is X-shaped, four magnetic blocks 65 are slidably arranged on the base 61 through the chute 64, the axial cross-section of the chute 64 is "convex"-shaped, an inverted T-shaped column is provided at the bottom end of the magnetic block 65, and the chute 64 matches the T-shaped column of the magnetic block 65. On the side wall of the pile hanging device 3, two symmetrically arranged limiting blocks 66 are provided. On the sides of the limiting block 66 and the magnetic block 65 close to each other, inclined surfaces for sliding and fitting are respectively provided. The magnetic poles on the sides of the four magnetic blocks 65 away from the limiting blocks 66 are of the same name. A positive stiffness structure is arranged between the four magnetic blocks 65. The positive stiffness structure includes four groups of compression springs 71 and viscous dampers 72. The compression springs 71 are installed between two adjacent magnetic blocks 65, and the viscous dampers 72 are installed between adjacent magnetic blocks 65.

[0050] The working principle and usage process of the present invention: First, the vibrating pile hammer main body 1, the connecting frame 2 and the pile hanging device 3 are lifted by a steel wire rope. At this time, the axis of the pile hanging device 3 is parallel to the axis of the pile body. The pile hanging device 3 is inserted into the pile body driven by the steel wire rope and the vibrating pile hammer main body 1 to complete pile feeding; then the pile hanging device 3 is fixed to the pile body through the inner support type clamp 32 to complete pile clamping; then the steel wire rope lifts the vibrating pile hammer main body 1 at a set speed. At the same time, the telescopic oil cylinder 41 cooperates with the connecting block 42 to drive the pile hanging device 3 to rotate around the suspension block 33 at a set speed. After rotating 90 degrees, the pile turning is completed; then the pile body sinks into the soil under the vibration action of the vibrating pile hammer main body 1, the connecting frame 2 and the pile hanging device 3 and its own gravity to complete pile sinking;

[0051] When the vibrating pile hammer completes a single pile driving and waits for the process of feeding the subsequent pile, the axis of the pile hanger 3 is perpendicular to the steel wire rope. The pile hanger 3 is placed on the hull or the ground through the steel wire rope. The four compression springs 71 make the four magnetic blocks 65 tend to move away from each other. During the vibration process, when the pile hanger 3 moves towards the base 61, the four limit rods 63 slide in the four limit cylinders 62 respectively. The two limit blocks 66 squeeze the four magnetic blocks 65 to approach each other through the inclined surfaces, and the compression springs 71 are compressed, and the elastic force changes linearly. The repulsive force between the two magnetic blocks 65 with the same name and facing each other increases as the magnetic blocks 65 approach. The repulsive force is inversely proportional to the square of the distance. The compression spring 71 itself is a positive stiffness structure, and together with the magnetic blocks 65, it forms a negative stiffness structure, which greatly reduces the resonance frequency. At the same time, the piston of the viscous damper 72 reciprocates in the cylinder body, and the flow of the damping medium generates resistance, converting the vibration energy into heat energy to achieve energy dissipation. Cooperating with the negative stiffness structure, it improves the damping ratio, reduces the vibration response of the pile hanger 3, reduces the wear of the vibrating pile hammer on the hull surface, reduces the dynamic coefficient of the working load of the steel wire rope under the surge condition, and prolongs the service life of the steel wire rope.

[0052] The above is only a preferred embodiment of the present invention, and it does not impose any form of limitation on the present invention. Although the present invention has been disclosed above with a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still belong to the scope of the technical solution of the present invention.

Claims

1. An efficient, energy-saving and environmental-friendly vibro hammer for marine pile foundation engineering, characterized in that, Comprising: The vibrating pile hammer main body (1); A connecting frame (2), which is connected to the bottom end of the vibrating pile hammer main body (1) through fasteners; A pile hanging device (3), which is rotatably connected to the connecting frame (2), and the pile hanging device (3) is used for feeding piles, turning piles, clamping piles, and sinking piles; A driving mechanism (4), which is located inside the connecting frame (2), and the driving mechanism (4) is used to adjust the turning angle of the pile hanging device (3); A locking mechanism (5), which is located inside the connecting frame (2), and the locking mechanism (5) is used to fix the pile hanging device (3); A shock absorption device (6), the shock absorption device (6) includes a base (61), four limiting cylinders (62) are arranged on one side of the base (61) close to the pile hanging device (3), a limiting rod (63) is slidably installed in the limiting cylinder (62), one end of the limiting rod (63) away from the base (61) is fixedly connected to the pile hanging device (3), a chute (64) is arranged on one side of the base (61) close to the pile hanging device (3), the chute (64) is arranged in an X shape, four magnetic blocks (65) are slidably arranged on the base (61) through the chute (64), two symmetrically arranged limiting blocks (66) are arranged on the side wall of the pile hanging device (3), inclined surfaces for sliding and fitting are respectively arranged on the sides of the limiting blocks (66) and the magnetic blocks (65) close to each other, the magnetic poles on the sides of the four magnetic blocks (65) away from the limiting blocks (66) are of the same name, and a positive stiffness structure is arranged between the four magnetic blocks (65).

2. The high-efficiency, energy-saving and environmental protection type vibrating pile hammer for marine pile foundation engineering according to claim 1, characterized in that, The pile hanging device (3) includes a composite conical column (31), an inner support type clamp (32) is arranged inside the composite conical column (31), the gasket of the inner support type clamp (32) penetrates through the side wall of the composite conical column (31), a suspension block (33) is arranged in the middle at one end of the composite conical column (31) away from the conical part, a push-pull block (34) is arranged on the circumferential side wall of the composite conical column (31), and a locking block (35) is arranged at one end of the composite conical column (31) away from the conical part.

3. The high-efficiency, energy-saving and environmental-friendly vibrating pile hammer for marine pile foundation engineering according to claim 2, wherein, The connecting frame (2) includes a box shell (21), the bottom end of the box shell (21) is open, the top end of the box shell (21) is fixedly connected to the vibrating pile hammer main body (1) through fasteners, a support plate (22) is arranged on the top wall of the box shell (21), and the bottom end of the support plate (22) is rotatably connected to the suspension block (33) through a pin shaft.

4. The high-efficiency, energy-saving and environment-friendly vibrating pile hammer for marine pile foundation engineering according to claim 3, characterized in that, Both ends of the support plate (22) along the length direction are fixedly connected to the inner wall of the box shell (21), and a plurality of reinforcing ribs (23) are arranged at the connection positions of both ends of the support plate (22) along the length direction and the box shell (21).

5. An efficient energy-saving and environmental protection vibration pile hammer for marine pile foundation engineering according to claim 2, characterized in that, The driving mechanism (4) includes a telescopic oil cylinder (41), the cylinder body of the telescopic oil cylinder (41) is rotatably installed on the top wall of the box shell (21) through a mounting seat, a connecting block (42) is arranged at the end of the piston rod of the telescopic oil cylinder (41), and the connecting block (42) is rotatably connected to the push-pull block (34) through a pin shaft.

6. The high-efficiency, energy-saving and environment-friendly vibrating pile hammer for marine pile foundation engineering according to claim 2, wherein, The locking mechanism (5) includes a right-angle frame (51), the right-angle frame (51) is installed on the side wall of the support plate (22), two limiting plates (52) are arranged at the bottom end of the horizontal section of the right-angle frame (51), the two limiting plates (52) are matched with the locking block (35), a pin cylinder (53) is arranged on the side wall of the vertical section of the right-angle frame (51), and the pin of the pin cylinder (53) penetrates through the limiting plate (52) and the locking block (35).

7. The high-efficiency energy-saving and environmental protection type vibrating pile hammer for marine pile foundation engineering according to claim 1, characterized in that, The limiting rod (63) is arranged in a T-shaped cross-section along the axial direction, the inner channel of the limiting cylinder (62) is arranged in a T-shaped cross-section along the axial direction, and the limiting cylinder (62) is matched with the limiting rod (63).

8. The high-efficiency, energy-saving and environmental protection type vibrating pile hammer for marine pile foundation engineering according to claim 1, characterized in that, The sliding groove (64) is arranged in a "convex"-shaped cross-section along the axial direction, an inverted T-shaped column is arranged at the bottom end of the magnetic block (65), and the sliding groove (64) is matched with the T-shaped column of the magnetic block (65).

9. An efficient energy-saving and environmental protection vibration pile hammer for marine pile foundation engineering according to claim 1, characterized in that, The positive stiffness structure includes four groups of compression springs (71) and a viscous damper (72), the compression springs (71) are installed between two adjacent magnetic blocks (65), and the viscous damper (72) is installed between two adjacent magnetic blocks (65).

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