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CN-116537189-B - Floating type anti-slip pile holding device and use method thereof

CN116537189BCN 116537189 BCN116537189 BCN 116537189BCN-116537189-B

Abstract

The invention relates to a floating type pile-holding device for preventing a pile from slipping and a use method thereof, which are used for avoiding pile slipping accidents in the process of installing a single pile foundation of an offshore wind turbine. The pile holding device at least comprises a rubber cushion layer, an arc steel plate and a limiting wall hydraulic rod. The limiting walls are closed through hinges and bolts, the inner sides of the limiting walls are connected with the hydraulic rods, and eight limiting wall buckles are uniformly distributed on the outer sides of the limiting walls and connected with the buoyancy tanks. The inner side of the buoyancy tank is provided with a clamping groove, the outer side is provided with a buckle. During the use, at first hold stake device and hold tightly single pile foundation, accomplish the back of standing a stake, connect the flotation tank through spacing wall buckle on holding stake device, when swift current stake accident emergence, single pile foundation drives and holds stake device and buoyancy tank subsides, provides the resistance for single pile foundation subsidence through the buoyancy of flotation tank to reach the purpose that slows down swift current stake speed and even avoid swift current stake emergence. The pile sinking device is reasonable in structural design, the risk of pile slipping accidents can be reduced, and the safety of a single pile foundation in the pile sinking process is improved.

Inventors

  • SU KAI
  • ZHOU XIN
  • LIU YULING
  • ZHAO XINRUI
  • ZHU HONGZE

Assignees

  • 武汉大学

Dates

Publication Date
20260505
Application Date
20230517

Claims (7)

  1. 1. The floating anti-slip pile holding device is characterized by comprising a pile holding device (2) for holding and releasing a single pile foundation (1); the pile holding device (2) at least comprises an external limiting assembly, a plurality of internal holding pieces, a telescopic assembly for connecting the holding pieces and the limiting assembly, and a plurality of buoyancy tanks (4) for providing buoyancy to delay the sinking speed; the floating box (4) at least comprises an inner layer floating box which is detachably connected to the external limiting component through a connecting piece; The external limiting assembly comprises a plurality of limiting walls (23), the limiting walls (23) are connected end to end through hinges (25), and finally can be opened and closed to form a ring through a locking piece; The connecting piece is a clamping assembly (3), the clamping assembly (3) comprises a clamping groove (31) and a clamping buckle (32), the cross section of the clamping groove (31) is a dovetail shape, the shape and the size of the clamping buckle (32) are matched with those of the clamping groove (31), and the clamping buckle can be buckled in the clamping groove (31); Two limiting walls (23) are arranged, one ends of the two limiting walls (23) are connected through a hinge (25), the other ends of the two limiting walls are connected in an openable mode through locking pieces, and eight buckles (32) are uniformly distributed and connected to the outer sides of the limiting walls (23).
  2. 2. A floating anti-slip pile holding device according to claim 1, wherein the side of the holding member remote from the outer limit assembly is connected with a friction member.
  3. 3. The pile-holding device for floating anti-slip piles according to claim 1, wherein the pile-holding device (2) further comprises a plurality of outer-layer floating boxes, the outer-layer floating boxes are connected with the inner-layer floating boxes through connecting pieces, and the outer-layer floating boxes of different layers are connected with each other through the connecting pieces.
  4. 4. A floating anti-slip pile holding device according to claim 2, characterized in that the inner holding member is an arc steel plate (22), the friction member is an arc rubber cushion layer (21), and the surface is engraved with patterns.
  5. 5. The floating anti-slip pile holding device according to claim 1, wherein the height of the clamping groove buckled with the limiting wall is not less than one third of the height of the buoyancy tank, and the height of the clamping groove and the clamping groove connected with the buoyancy tank is not less than one half of the height of the buoyancy tank and not more than two thirds of the height of the buoyancy tank.
  6. 6. A floating anti-slip pile holding device according to claim 1, characterized in that the telescopic assembly comprises a hydraulic rod (24), a hydraulic cylinder, a hydraulic control system and a remote controller, the remote controller is connected with the hydraulic control system, the hydraulic control system is connected with the hydraulic cylinder, and the hydraulic cylinder is movably connected with the hydraulic rod (24).
  7. 7. The method of using a floating anti-slip pile holding device according to claim 1, comprising the steps of: s1, a single pile foundation (1) is self-sunk to a certain position, and a pile holding device is connected to the position, close to the sea level, of the single pile foundation (1); S2, adjusting the telescopic assembly to enable the pile holding device (2) to hold the single pile foundation (1); S3, connecting a proper number of buoyancy tanks (4) at the positions of the buckles (32) of the limiting walls (23) according to engineering practice after the staking is completed; s4, pile sinking operation is started; S5, adjusting the telescopic assembly to stop pile holding when the pile holding device (2) sinks to the top position of the buoyancy tank (4) along with the single pile foundation (1), and floating the pile holding device (2) to be stable under the buoyancy effect; s6, repeating the step S2, the step S4 and the step S5 until pile sinking operation is completed; s7, disassembling the buoyancy tank (4), and recovering the pile holding device (2).

Description

Floating type anti-slip pile holding device and use method thereof Technical Field The invention belongs to the technical field of offshore wind power generation, and particularly relates to a floating type anti-slip pile holding device and a use method thereof. Background Development and utilization of offshore wind energy resources requires depending on an offshore wind farm, and pile foundations of the offshore wind farm usually adopt large-diameter single pile foundations. Because of the structural characteristics of the large-diameter single pile foundation, a pile sliding effect can occur in the pile sinking process. The pile sliding is a common problem of pile sinking of a single pile foundation, and is mainly characterized in that when the pile sinking of the single pile foundation works, the stratum cannot bear the weight of the single pile foundation, so that the single pile foundation is quickly sunk, the lifting equipment is enabled to fall down, and special attention is paid to pile sinking of the single pile foundation with large weight and large diameter. Especially when piling is carried out on the sea, as a large number of constructors, crews and management staff are arranged on the ship, when a pile sliding occurs, the perpendicularity change of a single pile foundation is too large to meet the requirement, and the crane boom is tilted forwards and even causes the damage of the ship and the ship sinking accident, the anti-slip pile device is designed in a targeted mode to realize effective control so as to prevent the pile sliding and is very important for the pile foundation construction of the offshore wind farm. Disclosure of Invention The invention aims to provide a floating type anti-slip pile holding device and a use method thereof, which adopt an assembled design, have the advantages of simple structure, convenient construction, safety and reliability, solve the problems in the background technology and are suitable for the offshore wind power generation industry. To achieve the above object, the present invention is solved by the following techniques: a pile holding device for a floating anti-slip pile comprises a pile holding device for holding and releasing a single pile foundation; The pile holding device at least comprises an external limiting component, a plurality of internal holding pieces, a plurality of telescopic components for connecting the holding pieces and the limiting component, and a plurality of buoyancy tanks for providing buoyancy to delay the sinking speed; The buoyancy tank at least comprises an inner buoyancy tank, and the inner buoyancy tank is detachably connected to the external limiting assembly through a connecting piece. The number of the internal clasping members can be 3, 4, 5, etc. The telescopic assembly is preferably the same number as the number of clasps. The retraction assembly may be a mechanism known in the art that produces linear reciprocation, such as an electric push rod, a hydraulic push rod, or a jack or the like. The enclasping piece mainly plays a role of propping, and can be an arc-shaped piece, an arc-shaped block, a square block and the like. The limiting component is positioned on the outer ring and provides support for the limiting component, and the limiting component can be in the shape of a ring, a square, an ellipse and the like. Optionally, the above-mentioned stake device is embraced to floating anti-slide stake, outside spacing subassembly includes a plurality of spacing walls, and a plurality of spacing walls pass through hinge end to end, but finally the open and shut connection of locking piece becomes the ring. Wherein the number of the limiting walls can be 2, 3, 4, 5, 6, etc. The locking element can be a mechanical lock, an electric lock, a bolt and the like. Optionally, in the above-mentioned pile device is embraced to floating anti-slip pile, the one side that holds the piece and keep away from outside spacing subassembly is connected the friction piece. Optionally, the pile device is embraced to stake of foretell floating type anti-slip stake, pile device is embraced still including a plurality of outer layer buoyancy tanks, and outer buoyancy tank passes through the connecting piece and is connected with the inlayer buoyancy tank, passes through connecting piece interconnect between the outer buoyancy tank of different layers. Optionally, the pile device is embraced to foretell swift current stake is prevented to showy formula, the connecting piece is buckle subassembly, buckle subassembly includes draw-in groove and buckle, the cross section of draw-in groove is the dovetail, and the shape size and the draw-in groove of buckle are suited, can detain in the draw-in groove. Optionally, the pile device is embraced to stake of floating type anti-slide, spacing wall has two, and two spacing wall one ends pass through hinged joint, and the other end passes through the latch fitting and can open and shut the connection,