CN114941344A - Multiple buffering formula offshore wind power single pile basis buffer stop - Google Patents
Multiple buffering formula offshore wind power single pile basis buffer stop Download PDFInfo
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- CN114941344A CN114941344A CN202210752009.2A CN202210752009A CN114941344A CN 114941344 A CN114941344 A CN 114941344A CN 202210752009 A CN202210752009 A CN 202210752009A CN 114941344 A CN114941344 A CN 114941344A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
- E02D27/425—Foundations for poles, masts or chimneys specially adapted for wind motors masts
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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Abstract
The invention relates to a multi-buffer type offshore wind power single pile foundation anti-collision device which comprises an annular floating body and an energy dissipation ring. The energy dissipation ring is stacked on the annular floating body, and the energy dissipation ring and the annular floating body are sleeved on the periphery of the offshore wind power single pile foundation in a clearance fit mode. In practical application, the energy dissipation ring is arranged around the offshore wind power single-pile foundation and used for directly absorbing impact force from a ship, and the annular floating body used for supporting the energy dissipation ring is suspended in seawater under the action of water buoyancy. The annular floating body can be adaptively adjusted in relative height position according to different seawater levels at different time intervals to ensure that the energy dissipation ring is always positioned above the sea level, so that the energy dissipation ring is beneficial to keeping right relative to the ship to be violated. In addition, when the energy dissipation ring is acted by the ship impact force, the energy dissipation ring can freely rotate in the circumferential direction, namely part of impact kinetic energy is converted into the rotation kinetic energy of the energy dissipation ring, so that the impact strength of the anti-collision device when the anti-collision device is impacted can be reduced to a certain degree.
Description
Technical Field
The invention relates to the technical field of offshore wind power single pile foundation protection, in particular to a multiple buffer type offshore wind power single pile foundation anti-collision device.
Background
In recent years, offshore wind power generation has gained more and more attention, and according to the development plan of new energy industry, the wind power planning installation reaches 1.5 hundred million kilowatts in China in 2020, wherein the offshore wind power is 3000 ten thousand kilowatts, and the offshore wind power generation becomes an industry with great prospects along with the proposal of related encouragement policies and the breakthrough of technical bottlenecks.
In the operation process, the offshore wind power single pile foundation is easily damaged due to the impact of ships, so that on one hand, the operation safety of the offshore wind turbine is affected due to the fact that the structural strength of the offshore wind power single pile foundation is greatly reduced, and even dumping accidents occur in severe conditions; on the other hand, if the type of the ship on the coming side is the oil tanker, the oil tanker is damaged due to the action of rigid impact force except that the offshore wind power single pile foundation is damaged, and then the phenomenon of leakage of the transported oil is caused.
The Chinese patent application CN112301961B discloses a protection device for a pile leg of an ocean platform, which comprises a shell, wherein a floating body is arranged on the shell, two piston cylinder supports are arranged on the shell, a piston cylinder is arranged on each piston cylinder support, a piston rod is arranged on each piston cylinder, a second return spring is arranged on each piston rod, the piston rod is provided with a support frame through a connecting rod, each support frame is provided with a support frame shell, second articulated shafts are respectively arranged at the left end and the right end of each support frame, each second articulated shaft is articulated with a connecting rod frame, and the two connecting rod frames positioned at the same side are articulated together through a third articulated shaft. Under the actual working state, the support frame is suspended in seawater under the action of the traction force of the floating body, so that the problem that floating ice or floating objects on the sea directly impact the pile legs of the ocean platform can be effectively solved. However, in the above technical solution, the support frame with the function of collision avoidance sinks in the sea water, and thus the problem of collision of the marine vessel cannot be effectively solved. Moreover, the design structure of the protection device is complex, and the occupied area is large, which is not beneficial to manufacturing and site assembly construction. More importantly, after the support frame is subjected to plane deformation due to impact, the support frame is difficult to reset subsequently only by means of two opposite columnar springs (namely a first reset spring and a second reset spring) (the reset force generated by the first reset spring and the second reset spring is relatively limited, and the hinged area of the link frame is easy to block in the process of posture adjustment), and maintenance personnel are required to assist subsequently to open the support frame into a regular circle for meeting the next impact. Therefore, it is necessary to deeply research the anti-collision design of the offshore wind turbine pile foundation.
Disclosure of Invention
Therefore, in view of the above-mentioned problems and drawbacks, the objective of the present invention is to collect relevant data, and through various evaluations and considerations, and through continuous research and design improvement by the personnel of the objective group, the occurrence of the multi-buffer offshore wind power single-pile foundation anti-collision device will eventually result.
In order to solve the technical problem, the invention relates to a multiple buffer type anti-collision device for a marine wind power single pile foundation, which is used for forming circumferential protection on the marine wind power single pile foundation. The multiple buffer type offshore wind power single pile foundation anti-collision device comprises an annular floating body and an energy dissipation ring. The energy dissipation ring is stacked on the annular floating body, and the energy dissipation ring and the annular floating body are sleeved on the periphery of the offshore wind power single pile foundation in a clearance fit mode. In the application state, the annular floating body is suspended in seawater, and the energy dissipation ring for directly bearing the impact force from the ship floats on the sea surface under the action of the jacking force from the annular floating body.
As a further improvement of the technical scheme disclosed by the invention, the energy dissipation ring is preferably of a layered sandwich structure and is formed by stacking an inner layer supporting frame, a first energy dissipation assembly and an outer layer anti-collision frame from inside to outside in sequence. The inner layer supporting frame and the outer layer anti-collision frame are both made of engineering plastics and are annular as a whole. The first energy dissipation assembly is composed of a plurality of buffers which are arranged between the inner layer supporting frame and the outer layer anti-collision frame in a clamping mode and are uniformly distributed in the circumferential direction.
As a further improvement of the disclosed technical solution, the buffer is preferably a hydraulic crash buffer, a pneumatic hydraulic crash buffer or a polyurethane buffer detachably fixed on the outer side wall of the inner layer supporting frame.
As a further improvement of the technical scheme disclosed by the invention, assuming that the diameter value of the offshore wind power single pile foundation is D, the thickness value of the inner layer supporting frame is t1, and the thickness value of the outer layer anti-collision frame is t2, then t1 is more than or equal to 20/1D and less than or equal to 10/1D, and t2 is more than or equal to 5t 1.
As a further improvement of the technical scheme disclosed by the invention, the outer-layer anti-collision frame is preferably of a split structure and comprises an anti-collision frame body and a second energy dissipation component. An accommodating groove extends downwards from the top wall of the anti-collision frame body. The quantity of holding recess is established to a plurality ofly, and along the central axis circumference equipartition of crashproof frame body. The second energy dissipation component is composed of a plurality of connecting rod buffer mechanisms which are sunk and fixed in the accommodating grooves.
As a further improvement of the technical scheme disclosed by the invention, the connecting rod buffer mechanism comprises an L-shaped mounting seat, a guide post, a sliding block, a first cylindrical spring, a second cylindrical spring and a connecting rod. The L-shaped mounting seat is detachably fixed on the inner circumferential side wall of the accommodating groove. The guide post is inserted and fixed on the L-shaped mounting seat, the free end of the guide post is in contact with the radial side wall of the accommodating groove without a gap, and the central axis of the guide post is tangent to the inner circumferential side wall of the accommodating groove along the reverse extension line. The sliding block is sleeved on the guide post and can freely execute reciprocating displacement motion when being acted by external force. The first cylindrical spring and the second cylindrical spring are sleeved on the guide post and are separated by the sliding block. The inner free end and the outer free end of the connecting rod are respectively hinged with the outer circumferential side walls of the sliding block and the accommodating groove in a one-to-one correspondence mode, and when the anti-collision frame body deforms under the action of ship collision force, the anti-collision frame body can perform self-adaptive deflection motion. In the process of the sliding block performing sliding movement along the guide post, the first cylindrical spring or the second cylindrical spring stores elastic potential energy due to compression.
As a preferred design, only one set of link cushioning mechanism is contained in a single receiving groove.
Of course, in another modified design of the above technical solution, a single receiving groove may also include two sets of link cushioning mechanisms disposed opposite to each other.
Compared with the anti-collision device for the offshore wind power single-pile foundation with the traditional design structure, in the technical scheme disclosed by the invention, the energy dissipation ring is arranged around the offshore wind power single-pile foundation and used for directly absorbing the impact force from a ship, and the annular floating body used for supporting the energy dissipation ring is suspended in seawater under the action of water buoyancy. In practical application, the energy dissipation ring can be adaptively adjusted in relative height position according to different seawater levels at different time intervals so as to ensure that the energy dissipation ring is always opposite to a ship which is on the way. Therefore, on the premise of not obviously increasing the manufacturing cost and the construction difficulty, the all-round protection of the offshore wind power single pile foundation is realized, so that the capability of meeting accidental collisions from ships in different directions is ensured.
It should be further noted that when the energy dissipation ring is acted by the ship impact force, the energy dissipation ring can freely rotate in the circumferential direction around the central axis, that is, part of impact kinetic energy is converted into rotation kinetic energy of the energy dissipation ring, and the rest of the impact kinetic energy is absorbed by the energy dissipation ring in a mode of elastic deformation of the energy dissipation ring, so that the impact strength of the anti-collision device when the anti-collision device is impacted can be reduced to a certain extent on the premise of ensuring omnibearing and reliable protection of the offshore wind power single pile foundation, and the energy dissipation ring is ensured to have a long service life. In addition, the energy dissipation ring can freely rotate in the circumferential direction under the action of the impact force, so that the stress form of the energy dissipation ring under the collision can be effectively optimized, and the phenomenon that the local part of the energy dissipation ring is damaged too fast under the action of the unbalanced impact force is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic perspective view of a first embodiment of the multiple buffer type offshore wind power single-pile foundation anti-collision device according to the present invention (an offshore wind power single-pile foundation is shown by a dotted line).
Fig. 2 is a schematic perspective view of an energy dissipation ring in a first embodiment of the multiple buffer type offshore wind power single-pile foundation anti-collision device according to the present invention (the offshore wind power single-pile foundation is shown by a dotted line).
Fig. 3 is a schematic view of an actual application state of the first embodiment of the multiple buffer type offshore wind power single-pile foundation anti-collision device.
Fig. 4 is a schematic perspective view of a second embodiment of the multiple buffer type offshore wind power single-pile foundation anti-collision device according to the present invention (the offshore wind power single-pile foundation is shown by a dotted line).
Fig. 5 is a schematic perspective view of an energy dissipation ring in a second embodiment of the multiple buffer type offshore wind power single-pile foundation anti-collision device according to the present invention (the offshore wind power single-pile foundation is shown by a dotted line).
Fig. 6 is a top view of fig. 5 (the offshore wind power single pile foundation is shown in dashed lines).
Fig. 7 is a partial enlarged view of I of fig. 6 (the offshore wind power single pile foundation is shown in dashed lines).
Fig. 8 is a schematic view of an actual application state of the multiple buffer type offshore wind power single pile foundation anti-collision device according to the second embodiment of the invention.
Fig. 9 is a schematic perspective view of a third embodiment of the anti-collision device for the multi-buffer type offshore wind power single-pile foundation according to the invention (the offshore wind power single-pile foundation is shown by a dotted line).
1-an annular floating body; 2-energy dissipation ring; 21-inner layer supporting frame; 22-a first energy dissipating component; 221-polyurethane buffer; 23-outer layer anti-collision frame; 231-impact-proof frame body; 2311-accommodating the grooves; 232-a second energy dissipating component; 2321-link buffer mechanism; 23211-L-shaped mount; 23212-guide post; 23213-sliding block; 23214-first cylindrical spring; 23215-second cylindrical spring; 23216-Link.
Detailed Description
In the description of the present invention, it should be understood that the terms "front", "back", "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the practical application scene, buffer stop arranges around marine wind power single pile basis to form circumference protection to marine wind power single pile basis, avoid it to receive the collision of boats and ships directly.
The contents of the present invention are further described in detail with reference to specific examples, and fig. 1 shows a schematic perspective view of a first embodiment of the multiple buffer type offshore wind power single pile foundation anti-collision device according to the present invention, which is known to mainly comprise an annular floating body 1 and an energy dissipation ring 2. The energy dissipation ring 2 is stacked on the annular floating body 1, and the energy dissipation ring and the annular floating body are sleeved on the periphery of the offshore wind power single pile foundation in a clearance fit mode. The annular buoyant body 1 is preferably made of a lightweight material sealed up to no more than 0.5g/cm thick fruit. In practical application, the energy dissipation ring 2 is used for directly bearing the impact force from the ship and floats on the sea surface under the action of the jacking force of the annular floating body 1. The energy dissipation ring 2 is always suspended in the sea water under the combined action of the pressure from the energy dissipation ring 2 and the buoyancy of the water.
In practical application, the energy dissipation ring 2 can be adaptively adjusted in relative height position according to different seawater levels at different time intervals so as to ensure that the energy dissipation ring is always opposite to a ship which is on the way. Therefore, on the premise of not obviously increasing the manufacturing cost and the construction difficulty, the offshore wind power single-pile foundation is protected in all directions, the capability of meeting accidental collisions from ships in different directions is ensured, and the phenomenon that the offshore wind power single-pile foundation is damaged due to direct collision of the ships is effectively avoided.
It should be further noted that when the energy dissipation ring 2 is acted by the impact force of the ship, it can freely rotate in the circumferential direction around the central axis, that is, part of the impact kinetic energy is converted into the rotation kinetic energy of the energy dissipation ring, and the rest of the impact kinetic energy is absorbed by the energy dissipation ring through the elastic deformation of the energy dissipation ring, so that on the premise of ensuring the omnibearing and reliable protection of the offshore wind-electricity single pile foundation, the impact strength of the anti-collision device when being impacted can be reduced to a certain extent, and the energy dissipation ring 2 is ensured to have a long service life. In addition, the energy dissipation ring can freely rotate in the circumferential direction under the action of the impact force, so that the stress form of the energy dissipation ring 2 in the collision process can be effectively optimized, and the phenomenon that the local part of the energy dissipation ring is damaged too fast under the action of the unbalanced impact force is avoided.
It is known that the dissipator ring 2 may take a variety of designs to receive the kinetic energy of impact from the vessel, according to common design knowledge, however, a simple design and easy to manufacture and assemble embodiment is proposed here, as follows: as shown in fig. 2, the energy dissipation ring 2 is a layered sandwich structure, which is formed by stacking an inner layer support frame 21, a first energy dissipation element 22, and an outer layer anti-collision frame 23 from inside to outside in sequence. The inner layer support frame 21 and the outer layer impact-proof frame 23 are both made of engineering plastic and are annular as a whole. The first energy dissipation assembly 22 is composed of a plurality of polyurethane buffers 221 which are uniformly distributed in the circumferential direction and are clamped between the inner layer supporting frame 21 and the outer layer anti-collision frame 23.
Fig. 3 is a schematic view showing a practical application state of the first embodiment of the anti-collision device for the multi-buffer offshore wind power single-pile foundation according to the present invention, which shows that when a ship unexpectedly drifts to collide with the anti-collision device, the outer layer anti-collision frame 23 is firstly subject to an impact force to elastically deform (taking a rigid polyvinyl chloride engineering plastic as an example, the compression strength of the rigid polyvinyl chloride engineering plastic is not less than that of the rigid polyvinyl chloride engineering plastic50MPa, tensile strength not less than 40MPa, and elastic modulus not less than 10% 4 pa, so that the shock resistance of the shock absorber is stronger, and the shock absorber can be prevented from being torn and losing efficacy due to the action of over-limited impact force to form a first impact defense line, then the residual impact kinetic energy is sequentially conducted inwards, the polyurethane buffer 221 absorbs a part of the impact kinetic energy and converts the part of the impact kinetic energy into compression potential energy to form a second impact defense line, and most of the residual impact kinetic energy is converted into the compression potential energy (in a state of being propped by the offshore wind power single pile foundation) or deformation potential energy of the inner layer supporting frame 21 to form a third impact defense line. Therefore, under the synergistic effect of the first collision defense line, the second collision defense line and the third collision defense line, the collision kinetic energy value finally acting on the offshore wind power single pile foundation is extremely small or zero.
Two points need to be explained here: 1) in addition to the polyurethane buffer 221 for absorbing the impact kinetic energy, the limit impact kinetic energy may be estimated according to the actual application scenario and the tonnage of the ship, and other types of buffers such as a hydraulic anti-collision buffer, a pneumatic hydraulic anti-collision buffer, etc. are preferably selected; 2) the thickness of the inner support frame 21 and the outer impact frame 23 itself has a direct influence on the impact resistance of the crash barrier and, in addition, determines the overall weight of the crash barrier. In view of this, multiple experimental results prove that if the diameter value of the offshore wind power single pile foundation is D, the thickness value of the inner supporting frame 21 is t1 and the thickness value of the outer anti-collision frame 23 is t2, t1 of 20/1D or more and 10/1D or less and t2 or more and 5t1 are good in anti-collision effect, and the offshore wind power single pile foundation is beneficial for workers to carry out site assembly and construction.
Fig. 4 is a schematic perspective view illustrating a second embodiment of the anti-collision device for a single-pile foundation of a multi-buffer offshore wind power plant, which is different from the first embodiment in that: as shown in fig. 5, the outer layer impact-proof frame 23 is a split structure, which is mainly composed of two parts, namely an impact-proof frame body 231 and a second energy dissipation assembly 232. The anti-collision frame 231 is also made of engineering plastic, and a receiving groove 2311 extends downwards from the top wall. The receiving grooves 2311 are provided in plural numbers and are circumferentially and uniformly distributed along the central axis of the anti-collision frame body 231. The second energy dissipating assembly 232 is made up of a plurality of link damping mechanisms 2321. For a single accommodation groove 2311, two link damping mechanisms 2321 are disposed in the accommodation groove and face each other.
As shown in fig. 6 and 7, as a further refinement of the structure of the multi-buffer offshore wind power single pile foundation anti-collision device, the link damping mechanism 2321 is mainly composed of an L-shaped mounting seat 23211, a guide post 23212, a sliding block 23213, a first cylindrical spring 23214, a second cylindrical spring 23215, a link 23216, and the like. The L-shaped mounting seat 23211 is detachably fixed to the inner circumferential sidewall of the accommodating groove 2311, or is directly formed on the inner circumferential sidewall of the accommodating groove 2311 in an integral injection molding manner. The guide 23212 is inserted into and fixed to the L-shaped mount 23211, and its free end contacts the radial sidewall of the accommodating recess 2311 without a gap, and its central axis is tangential to the inner circumferential sidewall of the accommodating recess 2311. The sliding block 23213 is sleeved on the guide post 23212 and can freely perform a reciprocating displacement motion when being acted by an external force. The first and second cylindrical springs 23214 and 23215 are sleeved on the guide bar 23212 and are separated by the sliding block 23213. The inner free end and the outer free end of the connecting rod 23216 are respectively hinged with the sliding block 23213 and the outer circumferential side wall of the accommodating groove 2311 in a one-to-one correspondence manner, and when the anti-collision frame body 231 deforms under the action of the ship collision force, the anti-collision frame body 231 can generate adaptive deflection motion. In the process of the sliding block 23213 performing the sliding movement along the guide post 23212, the first cylindrical spring 23214 or the second cylindrical spring 23215 stores elastic potential energy due to being compressed.
Fig. 8 is a schematic view showing a practical application state of the multiple buffer type offshore wind power single pile foundation anti-collision device according to the second embodiment of the present invention, it can be seen that, when a ship unexpectedly drifts to collide with the anti-collision device, impact kinetic energy is firstly transmitted to the link buffering mechanism 2321 through the anti-collision frame body 231, and in the process, the anti-collision frame body 231 is also elastically deformed to form a first collision line, the link buffering mechanism 2321 absorbs a part of the impact kinetic energy to be converted into compression potential energy of the first column spring 23214 or the second column spring 23215 to form a second collision line, and during the process, the sliding block 23213 performs displacement motion along the guide column 23212 under the push-pull force of the link 23216, and then, the remaining impact kinetic energy is transmitted to the polyurethane 221 through the anti-collision frame body 231 again, the polyurethane buffer 221 absorbs a part of the impact kinetic energy to be converted into compression potential energy, so as to form a third impact defense line, and then, most of the rest impact kinetic energy is converted into the compression potential energy (in a state of being propped by the offshore wind-power single pile foundation) or deformation potential energy of the inner layer supporting frame 21 again so as to form a fourth impact defense line. Therefore, under the synergistic effect of the first collision prevention line, the second collision prevention line, the third collision prevention line and the fourth collision prevention line, the phenomenon that the offshore wind power single pile foundation is damaged or toppled due to the action of overlarge collision kinetic energy can be effectively avoided.
More importantly, when the ship is driven away, the elastic potential energy stored in the first cylindrical spring 23214 or the second cylindrical spring 23215 is released, and the anti-collision frame body 231 can automatically and rapidly restore to the original shape under the action of the pushing and pulling force from the connecting rod 23216, so as to better meet the next collision. In the process of shape recovery, external force assistance is not needed, so that the application and maintenance cost of the anti-collision device is effectively reduced.
Fig. 9 is a schematic perspective view illustrating a third embodiment of the anti-collision device for a multi-buffer offshore wind power single-pile foundation according to the present invention, which is different from the second embodiment in that: only one set of link damping mechanisms 2321 is contained within a single receiving recess 2311. In practical applications, the structural layout of the third embodiment is completely similar to that of the second embodiment, and the working principle is also similar, so for brevity, the description is omitted here. It should be noted that the multiple buffer type marine wind power single-pile foundation anti-collision device disclosed by the third embodiment has a simpler design structure, is beneficial to manufacturing and implementation, is relatively limited in anti-collision capacity, and is only suitable for a scene where a small-tonnage ship passes near the marine wind power single-pile foundation.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A multi-buffer type offshore wind power single-pile foundation anti-collision device is used for forming circumferential protection on an offshore wind power single-pile foundation and is characterized by comprising an annular floating body and an energy dissipation ring; the energy dissipation ring is stacked on the annular floating body, and the energy dissipation ring and the annular floating body are sleeved on the periphery of the offshore wind power single pile foundation in a clearance fit mode; in the application state, the annular floating body is suspended in sea water, and the energy dissipation ring for directly bearing the impact force from a ship floats on the sea surface under the action of the jacking force from the annular floating body.
2. The multi-buffer offshore wind power single-pile foundation anti-collision device according to claim 1, wherein the energy dissipation ring is of a layered sandwich structure and is formed by stacking an inner layer support frame, a first energy dissipation assembly and an outer layer anti-collision frame from inside to outside in sequence; the inner layer supporting frame and the outer layer anti-collision frame are both made of engineering plastics and are annular on the whole; the first energy dissipation assembly is composed of a plurality of buffers which are arranged between the inner layer supporting frame and the outer layer anti-collision frame in a clamping mode and are evenly distributed in the circumferential direction.
3. The multiple buffer offshore wind power single pile foundation buffer stop according to claim 2, wherein the buffer is a hydraulic buffer stop, a pneumatic hydraulic buffer stop or a polyurethane buffer stop detachably fixed on the outer sidewall of the inner layer support frame.
4. The multi-buffer type offshore wind power single-pile foundation anti-collision device according to claim 2, wherein assuming that the diameter value of the offshore wind power single-pile foundation is D, the thickness value of the inner layer supporting frame is t1, and the thickness value of the outer layer anti-collision frame is t2, then 20/1D is not less than t 1D is not less than 10/1D, and t2 is not less than 5t 1.
5. The multiple buffer type offshore wind power single pile foundation anti-collision device according to any one of claims 2 to 4, wherein the outer layer anti-collision frame is of a split structure and comprises an anti-collision frame body and a second energy dissipation component; an accommodating groove extends downwards from the top wall of the anti-collision frame body; the number of the accommodating grooves is multiple, and the accommodating grooves are uniformly distributed along the circumferential direction of the central axis of the anti-collision frame body; the second energy dissipation assembly is composed of a plurality of connecting rod buffer mechanisms which are sunk and fixed in the accommodating grooves.
6. The multiple buffer type offshore wind power single pile foundation anti-collision device according to claim 5, wherein the connecting rod buffer mechanism comprises an L-shaped mounting seat, a guide post, a sliding block, a first cylindrical spring, a second cylindrical spring and a connecting rod; the L-shaped mounting seat is detachably fixed on the inner circumferential side wall of the accommodating groove; the guide post is inserted, matched and fixed on the L-shaped mounting seat, the free end of the guide post is in gapless contact with the radial side wall of the accommodating groove, and the reverse extension line of the central axis of the guide post is tangent to the inner circumferential side wall of the accommodating groove; the sliding block is sleeved on the guide post and can freely perform reciprocating displacement motion when being acted by external force; the first cylindrical spring and the second cylindrical spring are sleeved on the guide post and are separated by the sliding block; the inner free end and the outer free end of the connecting rod are respectively hinged with the sliding block and the outer circumferential side wall of the containing groove in a one-to-one correspondence mode, and when the anti-collision frame body deforms under the action of ship collision force, the anti-collision frame body can perform adaptive deflection motion; in the process of the sliding block performing sliding movement along the guide post, the first cylindrical spring or the second cylindrical spring stores elastic potential energy due to compression.
7. The multi-buffer offshore wind power single pile foundation anti-collision device of claim 6, wherein only one set of the link buffer mechanism is contained in a single receiving groove.
8. The multi-buffer offshore wind power single pile foundation anti-collision device of claim 6, wherein two sets of link buffer mechanisms are oppositely arranged and contained in a single accommodating groove.
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| CN113006002A (en) * | 2021-03-19 | 2021-06-22 | 南昌大学 | Self-floating buffer device suitable for collision avoidance of bridge pier |
| CN114250696A (en) * | 2021-12-31 | 2022-03-29 | 重庆交通职业学院 | Traffic transport facility buffer stop |
| CN216156503U (en) * | 2021-09-04 | 2022-04-01 | 湖北中润路桥工程有限公司 | Self-floating pier anti-collision device |
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| CN207260028U (en) * | 2017-09-27 | 2018-04-20 | 东北林业大学 | A kind of bridge span structure anticollision device, collision-prevention device |
| CN108625343A (en) * | 2018-06-11 | 2018-10-09 | 福建省新能海上风电研发中心有限公司 | It is a kind of to limit the floating anticollision device, collision-prevention device stepped on and multiplied |
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| CN113006002A (en) * | 2021-03-19 | 2021-06-22 | 南昌大学 | Self-floating buffer device suitable for collision avoidance of bridge pier |
| CN216156503U (en) * | 2021-09-04 | 2022-04-01 | 湖北中润路桥工程有限公司 | Self-floating pier anti-collision device |
| CN114250696A (en) * | 2021-12-31 | 2022-03-29 | 重庆交通职业学院 | Traffic transport facility buffer stop |
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