KR20230161412A - Deep-sea self-rising wind power installation platform pile shoe with good lateral slip resistance performance - Google Patents

Abstract

The present invention relates to a deep-sea self-elevating wind power generation installation platform pile shoe with good lateral anti-slip performance, including a pile shoe body and an anti-slip unit. The pile shoe body and pile leg unit are inserted and mounted as one piece. The anti-slip unit is comprised of a plurality of anti-slip sub-units assembled within the pile shoe body. The anti-slip subunit includes a ground spike pin and a draw section. The ground spike pin is inserted and mounted within the pile shoe body, and receives a traction force from the traction portion to maintain the theoretical design position with respect to the pile shoe body. During the pile insertion process, the ground spike pin first contacts the seafloor stratum, and under the action of continuous downward pressure gradually penetrates deeper into the seafloor stratum, effectively improving the lateral slip prevention ability of the pile shoe. In addition, when pulling a pile, even if the ground spike pin is not smoothly separated from the seafloor stratum in some extreme situations, it can be quickly separated from the pile shoe body and ultimately left separately in the seafloor stratum, which is advantageous for quick performance of the pulling operation.

Description

Deep-sea self-rising wind power installation platform pile shoe with good lateral slip resistance performance

The present invention relates to the field of wind power installation platform manufacturing technology, and particularly to a deep-sea self-rising wind power installation platform pile shoe with good lateral slip prevention performance.

Offshore wind power is developing very rapidly as a non-polluting renewable energy development, and wind power installation platforms are important basic equipment used in the construction of offshore wind power projects. The self-rising wind power installation platform is equipped with pile legs that can rise and fall freely. During work, the pile legs are lowered to the sea floor and erected on the sea floor together with the pile shoes, and the platform Supported by pile legs, the bottom of the platform is kept a certain distance away from the sea surface, thereby avoiding the influence of waves on the platform and allowing work to be performed on the platform.

As the current wind power installation work progresses from 50m to 80m depth, the lateral load on the pile shoe is increasing due to the increase in sea wave load, and the lateral slip prevention ability of the pile shoe needs to be further strengthened. there is. To solve the above problem, the most commonly used method is to increase the contact area between the pile shoe and the seafloor geology. Specifically, the method is 1) to increase the contact area between the pile shoe and the seabed geology, the structural size of the pile shoe must be further increased, so it is structurally heavy and less economical; 2) As the structural size of the pile shoe increases, all vertical loads increase during pile pulling, which increases the requirement for the lifting capacity of the wind power installation platform lifting system and has disadvantages in rapid pulling of the pile.

According to the latest research results, in order to improve the lateral anti-slip ability of the pile shoe, a certain number of vertical anti-slip plates can be added to the bottom wall of the pile shoe and inserted into the seabed geology, such as the Chinese utility model. CN202120592152.0 discloses an anti-slip pile shoe including a pile shoe body and an anti-slip plate. Several anti-slip plates are installed at the bottom of the pile shoe body in a centrally symmetrical manner. The anti-slip plates include the anti-slip plate body, the connecting column and the wedge-shaped cutting teeth, and the top of the anti-slip plate body is the connecting column. It is fixedly connected to the bottom of the pile shoe body, and wedge-shaped cutting teeth are installed at the bottom of the anti-slip plate body. Installing an anti-slip plate can effectively improve the anti-slip ability of the pile shoe. However, the above technology specifically states that 1) too many anti-skid plates are arranged and assembly is difficult, making the assembly work very difficult and time-consuming; 2) If the platform performs pile insertion and pulling operations several times, the entire load on the anti-slip plate is large, so it is easy to be damaged, and since it is directly connected to the pile shoe body structure, even the pile shoe is damaged, so a lot of manpower and material force are invested for subsequent repair work. must proceed; 3) Before facing extreme ocean conditions, there is a problem that too many anti-slip plates are inserted into the seabed geology, so the pulling time is too long and the pile shoe cannot be quickly abandoned, which increases the risk of emergency. Therefore, it is urgent for this research team to solve the above-mentioned problems.

Accordingly, in consideration of the existing problems and defects, the research team of the present invention collected relevant data, evaluated and considered various aspects, and finally developed a deep-sea solution with good lateral slip prevention performance through continuous experimentation and modification by research team members. A self-elevating wind power installation platform pile shoe was developed.

In order to solve the above technical problems, the present invention discloses a deep-sea self-elevating wind power installation platform pile shoe with good lateral slip prevention performance, including the pile shoe body. The pile shoe body and pile leg unit are inserted and mounted as one piece. The deep-sea self-rising wind power installation platform pile shoe with good lateral anti-slip performance further includes an anti-slip unit. The anti-slip unit is used to improve the lateral anti-slip resistance of the pile shoe body and is composed of a plurality of anti-slip subunits assembled within the pile shoe body. The anti-slip subunit includes a ground spike pin and a draw section. The traction portion is disposed within the pile shoe body and is provided as a set with a ground spike pin. The ground spike pin is inserted and mounted within the pile shoe body, and receives a traction force from the traction portion to maintain the theoretical design position with respect to the pile shoe body. When performing pile insertion operations, the ground spike pins are penetrated into the seafloor stratum under the action of downward pressure. And when pulling a pile, the ground spike pin is separated from the seabed stratum or from the pile shoe body under the action of pulling force.

As a further improvement of the technical solution of the present invention, the number of anti-slip sub-units is three, and they are evenly distributed in the circumferential direction surrounding the central axis of the pile shoe body.

As a further improvement of the technical solution of the present invention, the traction portion includes a force receiving member and a flexible tension member. The force receiving member is fixed within the cavity of the pile shoe body and is located on one side of the ground spike pin. The flexible tension member is connected to the upper end of the ground spike pin and is directly pulled by the force receiving member.

As a further improvement of the technical solution of the present invention, the force bearing member is preferably a plastic member, and its tensile strength is less than 30Mpa. The flexible tension member is preferably a chain. In normal pile pulling situations, the force bearing member always exerts a traction force on the ground spike pin through the flexible tension member. In an abnormal pile pulling situation, the force bearing member fractures under the action of excessive traction force of the flexible tension member, releasing the traction on the ground spike pin.

As a further improvement of the technical solution of the present invention, the traction unit further includes a chain guide assembly. The chain guide assembly includes a support seat, a pin shaft, and a guide sprocket. The support sheet is also placed in the cavity of the pile shoe body and maintains the theoretical design position with the force bearing member. A receiving groove used to mount a guide sprocket is provided within the support sheet. The pin shaft is inserted into the support sheet and passes horizontally through the receiving groove. The guide sprocket is installed over the pin shaft and can freely rotate in the circumferential direction when subjected to the frictional force of the flexible tension member.

As a further improvement of the technical solution of the present invention, the anti-slip sub-unit further includes a vertical pipe and a guide sleeve. The vertical pipe is inserted and mounted in a vertical state and fixed in the cavity of the pile shoe body. A through passage through which the flexible tension member can freely pass is provided within the vertical pipe. The guide sleeve is also inserted, mounted and fixed into the cavity of the pile shoe body, and docked with the lower end of the vertical pipe. A receiving chamber suitable for the external shape of the ground spike pin is provided within the guide sleeve. In an abnormal pile pulling situation, the force bearing member is fractured by the action of excessive traction force of the flexible tension member, and the ground spike pin loses the action of traction force and is eventually left in the seafloor stratum.

As a further improvement of the technical solution of the present invention, a conical ground spike section is formed at the free end of the ground spike pin, and its taper is controlled to 1:5 to 1:7.

As a further improvement of the technical solution of the present invention, a wear-resistant coating layer that completely covers the conical ground spike section is additionally installed on the outer wall of the ground spike pin.

As a further improvement of the technical solution of the present invention, at least one diagonal ground spike section is formed on the circumferential side wall of the ground spike pin and located above the conical ground spike section, and the inclination angle β is controlled to 30 to 45°. do.

Compared to the wind power installation platform pile shoe of the conventional design structure, in the technical solution disclosed in the present invention, the pile shoe main body is provided with a plurality of anti-slip subunits simultaneously as a set. And each anti-slip sub-unit includes an independent ground spike pin inserted into the pile shoe body. During the pile insertion process, the ground spike pin first contacts the seafloor stratum, and under the action of continuous downward pressure, it gradually penetrates deeper into the seafloor stratum until the bottom wall of the pile shoe body abuts the seafloor stratum, and the lateral direction of the pile shoe It effectively improves the anti-slip ability and further ensures that the pile legs can withstand the impact from huge waves at sea, ultimately ensuring the application safety of the deep-sea self-rising wind power installation platform.

It should also be explained that the ground spike pin is inserted, mounted and assembled into the pile shoe body due to the action of traction force. When pulling piles, in some extreme situations, even if the ground spike pin does not separate smoothly from the seabed stratum, it may quickly separate from the pile shoe body and ultimately be left separately in the seabed stratum.

In order to more clearly explain the embodiments of the present invention or the technical solutions of the prior art, the drawings necessary for the description of the embodiments or the prior art below are briefly introduced. However, to be clear, the drawings described below are only part of the present invention. They are merely examples, and those skilled in the art will be able to obtain other drawings from these drawings without the need to strive for inventive step.
Figure 1 is an application state diagram when a deep-sea self-elevating wind power generation installation platform pile shoe and pile leg with good lateral slip prevention performance according to the present invention are combined.
Figure 2 is a three-dimensional schematic diagram at a first angle of the deep-sea self-elevating wind power generation installation platform pile shoe with good lateral slip prevention performance according to the present invention.
Figure 3 is a three-dimensional schematic diagram at a second angle of the deep-sea self-elevating wind power generation installation platform pile shoe with good lateral slip prevention performance according to the present invention.
Figure 4 is a front view of Figure 2.
Figure 5 is a cross-sectional view taken along AA in Figure 4.
Figure 6 is a three-dimensional schematic diagram of the deep-sea self-rising wind power installation platform pile shoe with good lateral slip prevention performance according to the present invention from a third angle (with the front case plate of the pile shoe body removed).
Figure 7 is an enlarged view of part I of Figure 6.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms “front”, “back”, “top”, “bottom”, “left”, “right”, etc. is the orientation shown in the accompanying drawings. or is based on a positional relationship, and is only intended to facilitate and simplify the description of the present invention, and specifies or implies that the indicating device or element must have a specified orientation, or be configured or operated in a specified orientation. Since it is not intended to do so, it should not be understood as a limitation on the present invention.

As shown in Figure 1, in actual application, the pile shoe is assembled at the bottom of the pile leg, and the two work together to stably support the wind power installation platform.

The contents disclosed in the present invention will be described in more detail in combination with the specific embodiments below, but Figures 2 and 3 show a deep-sea self-elevating wind power generation installation platform file with good lateral slip prevention performance according to the present invention at two various angles, respectively. This is a three-dimensional schematic diagram showing the shoe, and it can be seen that it is mainly composed of several parts, including the pile shoe body (1) and the anti-slip unit (2). Here, the pile shoe body 1 is inserted and mounted integrally with a plurality of pile legs that can be vertically inserted into seawater. The anti-slip unit (2) is used to improve the lateral anti-slip resistance of the pile shoe body and is composed of a plurality of anti-slip sub-units (21) assembled within the pile shoe body (1). The number of anti-slip subunits 21 is three, and they are evenly distributed in the circumferential direction surrounding the central axis of the pile shoe main body 1. 4 to 6, the anti-slip sub-unit 21 preferably includes a ground spike pin 211 and a traction portion 212. The traction portion 212 is disposed within the pile shoe body 1 and is provided as a set with a ground spike pin 211. The ground spike pin 211 is inserted and mounted within the pile shoe body 1, and receives a traction force from the traction portion 212 to maintain the theoretical design position with respect to the pile shoe body 1. During the pile insertion process, the ground spike pin 211 first contacts the seafloor stratum, and under the action of continuous downward pressure gradually penetrates deeper into the seafloor stratum until the bottom wall of the pile shoe body 1 abuts the seafloor stratum. , It effectively improves the lateral slip prevention ability of the pile shoe, and furthermore, the pile leg can withstand the impact from huge waves at sea, ultimately ensuring the application safety of the deep-sea self-rising wind power installation platform.

In order to reduce the downward insertion resistance of the ground spike pin 211 so that it can penetrate more smoothly and thoroughly under the seafloor stratum, as shown in FIG. 5, the free end of the ground spike pin 211 is provided with a conical ground spike section ( 2111) is formed, and its taper is controlled to 1:5 to 1:7.

According to long-term experimental results, after use for a certain period of time, the ground spike pins 211 are worn and dulled due to friction, which not only increases the difficulty of the ground spike pins 211 penetrating the seabed strata, but also increases the subsequent repair and It takes a lot of manpower to replace it. In consideration of this, as a further optimization of the above technical solution, a wear-resistant coating layer (not shown) is additionally provided on the outer wall of the ground spike pin 211 to completely cover the conical ground spike section 2111. .

In addition, when combined with FIGS. 3, 4, 5, and 6, a plurality of diagonal ground spike sections 2112 extend outward from the outer wall of the ground spike pin 211, and the inclination angle β thereof is controlled to 30 to 45°. You can clearly see. Accordingly, in the pile insertion process, the conical ground spike section 2111 first contacts the seafloor stratum, and gradually penetrates deeper into the seafloor stratum to a set depth under the action of continuous downward pressure, and at this time, the diagonal ground spike section 2112 It comes into contact with the seafloor stratum, and likewise, under the action of continuous downward pressure, the bottom wall of the pile shoe body 1 gradually penetrates deeper beneath the seafloor stratum until it comes into contact with the seafloor stratum. The conical ground spike section 2111 and the diagonal ground spike section 2112 work together to limit the lateral sliding displacement of the pile shoe, thereby further improving the lateral slip prevention ability of the pile shoe.

According to design common sense, the pulling part 212 can take on various design structures so as to pull the spike pin 211 and always maintain an accurate assembly relationship with the pile shoe body 1. However, here, an embodiment is recommended that has a simple design structure, is easy to manufacture and implement, and is easy to replace the ground spike pin 211 in the future. Specifically, when combined with FIGS. 4, 5, and 6, the traction It can be seen that the part 212 preferably includes a plastic member 2121 and a chain 2122. The plastic member 2121 is fixed to the cavity of the pile shoe body 1 and is located on one side of the ground spike pin 211. The chain 2122 is connected to the upper end of the ground spike pin 211 and is directly pulled by the plastic member 2121.

After a certain period of use, if the ground spike pin 211 has reached its service life or is damaged due to excessive wear, the operator can restrain the chain 2122 to the plastic member 2121 without breaking the pile shoe body 1. It can be released easily and quickly, which is advantageous for subsequent replacement work.

In normal pile pulling situations, the plastic member 2121 always exerts traction on the ground spike pin 211 via the chain 2122. Of course, in some extreme situations when pulling a pile, even if the ground spike pin 211 is not smoothly separated from the seafloor strata, it may quickly separate from the pile shoe body 1 and ultimately be left separately in the seafloor stratum. The reason is that, in an abnormal pile pulling situation, the plastic member 2121 (tensile strength should be lower than 30Mpa) is broken under the action of excessive traction force of the chain 2122, thereby releasing the traction on the ground spike pin 211, thereby causing the pile shoe to break. This is because the main body (1) can smoothly and quickly escape from the seafloor, reducing the risk of emergency.

In conjunction with FIGS. 4, 5, and 6, it can be seen that a chain guide assembly 2123 is additionally installed in the towing portion 212 to prevent jamming during the process of towing or releasing the ground spike pin 211. You can. As shown in FIG. 7, the chain guide assembly 2123 includes a support seat 21231, a pin shaft 21232, and a guide sprocket 21233. The support sheet 21231 is also disposed within the cavity of the pile shoe body 1 and maintains the theoretical design position with the plastic member 2121. A receiving groove used to mount the guide sprocket 21233 is provided within the support sheet 21231. The pin shaft 21232 is inserted into the support sheet 21231 and passes through the receiving groove horizontally. The guide sprocket 21233 is installed to cover the pin shaft 21232, and an annular guide groove suitable for the chain 2122 is installed on the outer peripheral side wall. In the process of implementing or releasing the traction operation of the ground spike pin 211, the chain 2122 always slides along the annular guide groove, and the guide sprocket 21233 freely moves in the circumferential direction under the action of the friction force of the chain 2122. Rotational movement is possible.

In the pile insertion process, in order to ensure that the ground spike pin 211 is inserted vertically into the seafloor stratum and to prevent the problem of insertion at an angle due to lack of grip force, as a further optimization of the above technical solution, Figures 4, 5, and 6 As shown, a vertical pipe 213 and a guide sleeve 214 are additionally installed in the anti-slip sub-unit 21. The vertical pipe 213 is inserted and mounted in a vertical state and is fixed to the cavity of the pile shoe body 1. A through passage through which the chain 2122 can freely pass is provided within the vertical pipe 213. The guide sleeve 214 is also inserted, mounted, and fixed into the cavity of the pile shoe body 1, and docked with the lower end of the vertical pipe 213. A receiving chamber suitable for the external shape of the ground spike pin 211 is installed within the guide sleeve 214. In an abnormal pile pulling situation, the plastic member 2121 is broken under the action of excessive traction force of the chain 2122, and the ground spike pin 211 loses the action of traction force and is eventually left in the seafloor stratum. In this way, the guide sleeve 214 is a transitional part inserted between the ground spike pin 211 and the pile shoe body 1, and can effectively increase the grip force on the ground spike pin 211, preventing excessive lateral force. Completely blocks the “tilting” phenomenon caused by the action.

The present invention can be used or implemented by those skilled in the art through the above description of the disclosed embodiments. To those skilled in the art, various modifications to these embodiments are obvious, and the general principles defined herein can be implemented through other embodiments without departing from the spirit or scope of the present invention. You can. Therefore, the present invention is not limited to these embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

1: Pile shoe body
2: Anti-slip unit
21: Non-slip subunit
211: Ground spike pin
2111: Conical ground spike section
2112: Diagonal ground spike section
212: Traction unit
2121: Plastic member
2122: chain
2123: Chain guide assembly
21231: Support sheet
21232: pin shaft
21233: Guide sprocket
213: vertical pipe
214: Guide sleeve

Claims (9)

In the deep-sea self-elevating wind power generation installation platform pile shoe with good lateral slip prevention performance,
Includes a pile shoe body; The pile shoe body and the pile leg unit are inserted and mounted as one piece, and further include an anti-slip unit; The anti-slip unit is used to improve the lateral anti-slip resistance of the pile shoe body, and is composed of a plurality of anti-slip sub-units assembled within the pile shoe body; The anti-slip sub-unit includes a ground spike pin and a traction portion; The traction portion is disposed within the pile shoe body and is provided as a set with the ground spike pin; The ground spike pin is inserted and mounted into the pile shoe body and receives a traction force from the traction portion to maintain the theoretical design position with respect to the pile shoe body; When performing the pile insertion operation, the ground spike pin is penetrated into the seabed stratum under the action of downward pressure, and when pulling the pile, the ground spike pin is separated from the seabed stratum under the action of pulling force, or is separated from the pile shoe body. A deep-sea self-elevating wind power generation installation platform pile shoe with good lateral slip prevention performance. According to paragraph 1,
A deep-sea self-rising wind power generation installation platform pile shoe with good lateral anti-slip performance, characterized in that the number of anti-slip subunits is three and evenly distributed in the circumferential direction surrounding the central axis of the pile shoe main body. According to paragraph 2,
The traction portion includes a force receiving member and a flexible tension member; The force receiving member is fixed to the cavity of the pile shoe body and is located on one side of the ground spike pin; The flexible tension member is connected to the upper end of the ground spike pin, and is directly pulled by the force receiving member. A deep-sea self-rising wind power generation installation platform pile shoe with good lateral slip prevention performance. According to paragraph 3,
The force bearing member is a plastic member, and its tensile strength is less than 30Mpa; The flexible tension member is a chain; In a normal pile pulling situation, the force receiving member always exerts a traction force on the ground spike pin through the flexible tension member; In an abnormal pile pulling situation, the force-receiving member is fractured by the action of excessive traction force of the flexible tension member, thereby releasing the traction on the ground spike pin. Deep-sea self-rising wind power with good lateral slip prevention performance. Power generation installation platform pile shoe. According to paragraph 4,
The traction unit further includes a chain guide assembly; The chain guide assembly includes a support seat, a pin shaft and a guide sprocket; The support sheet is also disposed in the cavity of the pile shoe body and maintains a theoretical design position with the force receiving member; A receiving groove used to mount the guide sprocket is provided within the support sheet; The pin shaft is inserted into the support sheet and passes horizontally through the receiving groove; The guide sprocket is installed to cover the pin shaft, and can freely rotate in the circumferential direction when subjected to the frictional force of the flexible tension member. A deep-sea self-elevating wind power generation installation platform with good lateral slip prevention performance. File shoe. According to paragraph 3,
The anti-slip sub-unit further includes a vertical pipe and a guide sleeve; The vertical pipe is inserted and mounted in a vertical state and fixed to the cavity of the pile shoe body; A through passage through which the flexible tension member can freely pass is provided in the vertical pipe; The guide sleeve is also inserted, mounted, and fixed into the cavity of the pile shoe body and docked with the lower end of the vertical pipe; A receiving chamber suitable for the external shape of the ground spike pin is provided within the guide sleeve; In an abnormal pile pulling situation, the force bearing member is fractured by the action of excessive traction force of the flexible tension member, and the ground spike pin loses the action of traction force and is eventually left in the seafloor stratum. Deep-sea self-rising wind power installation platform pile shoe with good performance. According to any one of claims 1 to 6,
A conical ground spike section is formed at the free end of the ground spike pin, and its taper is controlled to 1:5 to 1:7. A deep-sea self-rising wind power generation installation platform pile shoe with good lateral slip prevention performance. . In clause 7,
A deep-sea self-rising wind power generation installation platform pile shoe with good lateral slip prevention performance, characterized in that a wear-resistant coating layer that completely covers the conical ground spike section is additionally installed on the outer wall of the ground spike pin. In clause 7,
It is located above the conical ground spike section and at least one diagonal ground spike section is formed on the peripheral side wall of the ground spike pin, and its inclination angle β is controlled to 30 to 45°. Lateral anti-slip performance is provided. Good deep-sea self-rising wind power installation platform pile shoes.