A floating anti-slip pile holding device and a method for using the same

Abstract

This invention relates to a floating anti-slippage pile clamping device and its usage method, used to prevent pile slippage accidents during the installation of offshore wind turbine monopile foundations. The clamping device includes at least a rubber pad, an arc-shaped steel plate, and hydraulic rods for limiting walls. The limiting walls are closed by hinges and bolts, with their inner side connected to the hydraulic rods and eight evenly distributed limiting wall clips on their outer side connecting to a pontoon. The pontoon has a slot on its inner side and clips on its outer side. In use, the clamping device first clamps the monopile foundation. After the pile is erected, the pontoon is connected to the clamping device via the limiting wall clips. When a pile slippage accident occurs, the monopile foundation causes the clamping device and pontoon to sink. The buoyancy of the pontoon provides resistance to the sinking of the monopile foundation, thereby slowing down the slippage speed or even preventing it from occurring. This invention has a reasonable structural design, reducing the risk of pile slippage accidents and improving the safety of monopile foundation driving.

Description

Technical Field

[0001] This invention belongs to the field of offshore wind power generation technology, and in particular relates to a floating anti-slip pile holding device and its usage method. Background Technology

[0002] The development and utilization of offshore wind energy resources rely on offshore wind farms, whose foundations typically use large-diameter monopile foundations. Due to the structural characteristics of large-diameter monopile foundations, pile slippage can occur during the pile driving process. Pile slippage is a common problem in monopile foundation driving, mainly manifested when the ground cannot support the weight of the monopile foundation, causing it to sink rapidly and resulting in the collapse of cranes. Special attention must be paid to this when driving heavy, large-diameter monopile foundations. Especially during offshore piling work, with a large number of construction workers, crew, and management personnel on board, pile slippage can lead to anything from excessive changes in the verticality of the monopile foundation failing to meet requirements to serious consequences such as the crane boom tilting forward or even damage to the ship and sinking. Therefore, designing a targeted anti-pile slippage device to effectively control and prevent pile slippage is crucial for the construction of offshore wind farm foundations. Summary of the Invention

[0003] The purpose of this invention is to provide a floating anti-slip pile holding device and its usage method. It adopts a prefabricated design and has the advantages of simple structure, convenient construction, and safety and reliability, so as to solve the problems mentioned in the background art and is applicable to the offshore wind power industry.

[0004] To achieve the above objectives, the present invention solves the problem through the following technical means:

[0005] A floating anti-slip pile gripping device includes a gripping device for gripping and releasing a single pile foundation.

[0006] The pile-holding device includes at least an external limiting component, several internal clamping components, several telescopic components connecting the clamping components and the limiting component, and several buoys for providing buoyancy to slow down the sinking speed.

[0007] The pontoon includes at least an inner pontoon, which is detachably connected to the outer limiting assembly via a connector. The number of internal clamping members can be 3, 4, 5, etc. The number of telescopic components is preferably the same as the number of clamping members. The telescopic components can be mechanisms that generate linear reciprocating motion, such as electric push rods, hydraulic push rods, or jacks and similar components. The clamping members mainly serve a clamping function and can be arc-shaped pieces, arc-shaped blocks, square blocks, etc. The limiting assembly is located on the outer ring, providing support for limiting, and can be annular, square, elliptical, etc.

[0008] Optionally, in the aforementioned floating anti-slip pile holding device, the external limiting component includes several limiting walls connected end-to-end by hinges, and finally connected into a ring by a locking device. The number of limiting walls can be 2, 3, 4, 5, 6, etc. The locking device can be a mechanical lock, an electric lock, a bolt, etc.

[0009] Optionally, in the above-mentioned floating anti-slip pile holding device, the side of the holding member away from the external limiting component is connected to a friction member.

[0010] Optionally, the above-mentioned floating anti-slip pile holding device further includes several layers of outer floating boxes, which are connected to the inner floating boxes through connectors, and the outer floating boxes of different layers are connected to each other through connectors.

[0011] Optionally, in the above-mentioned floating anti-slip pile holding device, the connecting member is a buckle assembly, the buckle assembly includes a groove and a buckle, the cross-section of the groove is dovetail-shaped, and the shape and size of the buckle are adapted to the groove so that it can be fastened into the groove.

[0012] Optionally, in the above-mentioned floating anti-slip pile holding device, there are two limiting walls. One end of the two limiting walls is connected by a hinge, and the other end is connected by a locking device that can be opened and closed. Eight buckles are evenly distributed on the outer side of the limiting walls.

[0013] Optionally, in the above-mentioned floating anti-slip pile clamping device, the internal clamping component is an arc-shaped steel plate, and the friction component is an arc-shaped rubber pad with patterns engraved on its surface.

[0014] Optionally, in the above-mentioned floating anti-slip pile holding device, the buckle connected to the limiting wall is at the same height as the limiting wall, and the height of the buckle groove that engages with it should be no less than one-third of the height of the pontoon; the height of the buckle and the groove connected to the pontoon should be no less than half the height of the pontoon and no more than two-thirds of the height of the pontoon.

[0015] Optionally, in the above-mentioned floating anti-slip pile holding device, the telescopic component includes a hydraulic rod, a hydraulic cylinder, a hydraulic control system, and a remote controller. The remote controller is connected to the hydraulic control system, the hydraulic control system is connected to the hydraulic cylinder, and the hydraulic rod is movably connected inside the hydraulic cylinder.

[0016] The present invention also provides a method for using a floating anti-slip pile holding device, comprising the following steps:

[0017] S1. The single pile foundation sinks to a certain position by itself, and a pile clamping device is installed near the sea level of the single pile foundation.

[0018] S2. Adjust the expansion joint to make the pile clamping device hold the single pile foundation tightly;

[0019] S3. Connect an appropriate number of pontoons to the buckle positions of the limit wall according to the actual project conditions;

[0020] S4. Begin pile driving operation;

[0021] S5. When the pile holding device sinks to the top position of the pontoon box along with the single pile foundation, adjust the telescopic component to stop holding the pile. The pile holding device floats up to a stable position under the action of buoyancy.

[0022] S6. Repeat steps S2, S4, and S5 until the pile driving operation is completed.

[0023] S7. Disassemble the pontoon and retrieve the bollard.

[0024] Through the above techniques, the present invention can achieve at least one of the following beneficial effects:

[0025] 1. As a floating anti-slip pile holding device, when a slip pile accident occurs, the single pile foundation drives the invention to sink rapidly. The buoyancy box obtains buoyancy and provides buoyancy to the single pile foundation through the holding device, thereby achieving the purpose of slowing down the slip pile speed or even avoiding the slip pile accident, and ensuring the safety of the pile driving process.

[0026] 2. By using hydraulic rods to extend and retract the pile clamping device and to assemble floating boxes of different sizes and quantities, this invention can adapt to single pile foundations of different pile diameters and can be reused in different projects, thus increasing the application range of the pile clamping device and greatly reducing production costs.

[0027] 3. This device has a prefabricated structure, which is simple in structure and has low production cost. It can be prefabricated on shore and assembled on site to meet the needs of different projects, which greatly improves construction efficiency and economy.

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural diagram of the floating anti-slip pile holding device of the present invention in use.

[0030] Figure 2 This is a top view schematic diagram of the floating anti-slip pile holding device of the present invention in use.

[0031] Figure 3 This is a three-dimensional structural diagram of a floating anti-slip pile holding device according to the present invention;

[0032] Figure 4 This is a three-dimensional structural diagram of the pontoon from a certain perspective;

[0033] Figure 5 This is a three-dimensional structural diagram of the pontoon from another perspective.

[0034] In the diagram, 1-single pile foundation, 2-pile clamping device, 21-rubber pad, 22-arc steel plate, 23-limiting wall, 24-hydraulic rod, 25-hinge, 3-clamping assembly, 31-slot, 32-clamp, 4-floating box. Detailed Implementation

[0035] To facilitate understanding of the present invention, further description is provided below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes and to enable those skilled in the art to understand and read the invention; they are not intended to limit the implementation conditions of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effects and objectives of the invention, should still fall within the scope of the technical content disclosed in the present invention. For ease of description, the terms "upper," "lower," "left," and "right" in the following text only indicate that they correspond to the upper, lower, left, and right directions of the accompanying drawings and do not limit the structure.

[0036] Example 1

[0037] Please see Figures 1 to 3 In this invention, the floating anti-slip pile holding device includes: a holding device 2 for holding and releasing a single pile foundation 1, wherein the holding device 2 includes at least three rubber pads 21, at least three arc-shaped steel plates 22, at least one limiting wall 23, and at least three hydraulic rods 24. When there are two limiting walls, one end of the two limiting walls 23 is connected by a hinge 25, and the other end is closed by bolts. The inner side of the limiting wall 23 is connected to the hydraulic rods 24, and the outer side is evenly distributed with eight buckles 32 for connecting the floating box 4.

[0038] Specifically, the rubber pad 21 is bonded to the arc-shaped steel plate 22, and its surface is engraved with patterns to increase friction. The hydraulic rod 24 should have a certain telescopic length to accommodate single pile foundations 1 with different pile diameters.

[0039] Specifically, the pile clamping device 2 is first fixed to the single pile foundation 1 by a hydraulic rod 24, and then the floating box 4 is connected after the pile is erected.

[0040] Please refer to it again. Figure 1 and Figure 3To achieve the clamping and release of the monopile foundation 1 and the pile clamping device 2, a hydraulic rod 24 is connected to the pile clamping device 2. The hydraulic rod 24, through a hydraulic control system, clamps and releases the monopile foundation 1 with different pile diameters. During the pile driving process, the hydraulic rod 24 clamps the monopile foundation 1. Each time the monopile foundation 1 sinks a certain distance, the hydraulic rod 24 releases the monopile foundation 1, and the pile clamping device 2 and the pontoon 4 float to a balanced state. Then, the hydraulic rod 24 clamps the monopile foundation 1 again, and the pile driving continues.

[0041] Specifically, the sinking distance of the single pile foundation 1 should not be too large, so as to avoid the floating box 4 generating too much buoyancy and affecting the pile sinking speed. The hydraulic rod 24 should be retracted until the rubber pad layer 21 is completely separated from the single pile foundation 1 to ensure that the device can float to a balanced state.

[0042] Please refer to it again. Figure 4 and Figure 5 To enable the connection between the pontoon 4 and the bollard 2, as well as the splicing between the pontoons 4, the pontoon 4 is provided with a slot 31 on the inner side and a buckle 32 on the outer side.

[0043] Specifically, the buckle 32 connected to the limiting wall has the same thickness as the limiting wall 23, and is slightly smaller than the slot 31, so that it can be engaged with the slot.

[0044] Specifically, the size and number of the floating boxes 4 can be selected according to the actual project to adapt to the pile driving work of single pile foundations 1 with different weights.

[0045] Specifically, the height of the slot 31 and buckle 32 connected to the pontoon is not less than half the height of the pontoon 4 and not more than two-thirds the height of the pontoon 4, in order to avoid breakage during operation.

[0046] Specifically, the buckle 32 is slightly smaller than the slot 31.

[0047] The device is a prefabricated structure designed to prevent pile slippage during the installation of offshore wind turbine monopile foundations. The pile-holding device 2 can be adapted to monopile foundations 1 with different pile diameters by adjusting the hydraulic rod 24. The rubber pad 21 is arc-shaped with a textured surface, bonded to the arc-shaped steel plate, increasing friction without damaging the anti-corrosion coating on the monopile foundation 1. The pile-holding device 2 is connected to a buckle 32 for prefabricated assembly. The pile-holding device 2 is connected to the slot 31 and the pontoon 4 via the buckle 32. The pontoon 4 is a prefabricated design, allowing for interlocking with the slot 31 via the buckle 32. The size and number of pontoons should be selected based on the actual project. Adjusting the number of pontoons 4 allows for adaptation to different scenarios. The hydraulic rod is connected to the arc-shaped steel plate, and the pile-holding pressure is adjusted via a remotely controlled hydraulic control system. The limiting wall consists of two semi-circular ring arms connected by hinges and bolted together to achieve closure. The buckle connected to the limiting wall is at the same height as the limiting wall. It connects the pile holding device to the pontoon by fastening it in the slot. The height of the slot should be no less than one-third of the height of the pontoon to ensure a stable connection.

[0048] The height of the buckles and slots connected to the pontoon is not less than half the height of the pontoon and not more than two-thirds the height of the pontoon.

[0049] Example 2

[0050] A method for using a floating anti-slip pile holding device includes the following steps:

[0051] 1. The monopile foundation sinks to a certain position, and a pile clamping device is installed near the sea level of the monopile foundation.

[0052] 2. Adjust the hydraulic rod to make the pile clamping device hold the single pile foundation tightly.

[0053] 3. After the piles are erected, connect an appropriate number of pontoons to the locking positions of the limiting wall according to the actual project conditions.

[0054] 4. Begin pile driving operation.

[0055] 5. When the pile holding device sinks to the top of the pontoon as the single pile foundation sinks, adjust the hydraulic rod to stop holding the pile. The pile holding device will then float up to a stable position under the action of buoyancy.

[0056] 6. Repeat steps 2, 4, and 5 until the pile driving operation is completed.

[0057] 7. Dismantle the pontoon and retrieve the bollard.

[0058] First, the pile clamping device grips the monopile foundation. After the pile is erected, the pontoon is connected to the pile clamping device through the buckle on the limiting wall. When a pile slippage accident occurs, the monopile foundation drives the pile clamping device and the pontoon to sink. The buoyancy of the pontoon provides resistance to the sinking of the monopile foundation, thereby slowing down the pile slippage speed or even preventing the pile slippage from occurring.

[0059] The above embodiments are merely illustrative of the principles and operation of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A floating anti-slip pile holding device, characterized in that, Includes a pile gripping device (2) for gripping and releasing a single pile foundation (1); The pile holding device (2) includes at least an external limiting component, several internal clamping components, a telescopic component connecting the clamping components and the limiting component, and several pontoons (4) for providing buoyancy to slow down the sinking speed. The buoy (4) includes at least an inner buoy, which is detachably connected to the external limiting component via a connector; The external limiting component includes several limiting walls (23), which are connected end to end by hinges (25) and finally connected into a ring by a locking device; The connector is a snap fastener assembly (3), which includes a slot (31) and a snap fastener (32). The slot (31) has a dovetail-shaped cross-section, and the shape and size of the snap fastener (32) are adapted to the slot (31) so that it can be fastened into the slot (31). There are two limiting walls (23). One end of the two limiting walls (23) is connected by a hinge (25), and the other end is connected by a lock. Eight buckles (32) are evenly distributed on the outer side of the limiting wall (23).

2. The floating anti-slip pile holding device according to claim 1, characterized in that, The clamping member is connected to the friction member on the side away from the external limiting component.

3. The floating anti-slip pile holding device according to claim 1, characterized in that, The pile holding device (2) also includes several outer floating boxes, which are connected to the inner floating boxes through connectors, and the outer floating boxes of different layers are connected to each other through connectors.

4. A floating anti-slip pile holding device according to claim 2, characterized in that, The internal clamping component is an arc-shaped steel plate (22), and the friction component is an arc-shaped rubber pad (21) with patterns engraved on its surface.

5. A floating anti-slip pile holding device according to claim 1, characterized in that, The buckle connected to the limiting wall is at the same height as the limiting wall, and the height of the buckle groove that engages with it is not less than one-third of the height of the pontoon; the height of the buckle and the buckle groove connected to the pontoon is not less than half the height of the pontoon and not more than two-thirds of the height of the pontoon.

6. A floating anti-slip pile holding device according to claim 1, characterized in that, The telescopic assembly includes a hydraulic rod (24), a hydraulic cylinder, a hydraulic control system, and a remote controller. The remote controller is connected to the hydraulic control system, the hydraulic control system is connected to the hydraulic cylinder, and the hydraulic rod (24) is movably connected inside the hydraulic cylinder.

7. The method of using a floating anti-slip pile holding device according to claim 1, characterized in that, Includes the following steps: S1. The single pile foundation (1) sinks to a certain position, and the pile clamping device is connected to the single pile foundation (1) near the sea level. S2. Adjust the telescopic components to make the pile clamping device (2) clamp the single pile foundation (1); S3. After the piles are erected, connect an appropriate number of pontoons (4) to the buckle (32) position of the limiting wall (23) according to the actual project. S4. Begin pile driving operation; S5. When the pile holding device (2) sinks to the top position of the floating box (4) along with the single pile foundation (1), the telescopic component is adjusted to stop the pile holding. The pile holding device (2) floats up to a stable position under the action of buoyancy. S6. Repeat steps S2, S4, and S5 until the pile driving operation is completed. S7. Disassemble the pontoon (4) and retrieve the bollard (2).

Images