Connecting structure of jacket and steel pipe pile in offshore boosting platform
By adopting a grouting connection structure between steel pipe piles and the main legs of the jacket in the offshore pressurization platform, the grouting problem of the pre-pile jacket foundation was solved, a reliable connection between the jacket and the steel pipe piles was achieved, the construction difficulty and cost were reduced, and the connection safety and reliability were improved.
Patent Information
- Application Number
- CN202520340627.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-02-28
AI Technical Summary
The existing grouting problem of the pre-pile jacket foundation of offshore booster platforms leads to construction difficulties and stringent grouting requirements, resulting in high project investment. There is an urgent need for an effective, safe and reliable connection structure.
The connection structure between the steel pipe pile and the main leg of the jacket is adopted. By setting the first and second grouting components between the steel pipe pile and the main leg of the jacket, the grouting material is used to fill and solidify to form a concrete body, ensuring a firm connection between the two.
This achieved a reliable connection between the jacket and the steel pipe pile, reducing construction complexity and project costs, improving the safety and reliability of the connection, and increasing the project's profitability.
Smart Images
Figure CN223951739U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of connecting structure of jacket and steel pipe pile in offshore booster platform. BACKGROUND
[0002] Offshore booster station is the heart of entire offshore wind power project, undertakes wind farm booster, sending out and monitoring function, is an indispensable part of offshore wind power project.Offshore booster station is composed of upper block and lower foundation, wherein the upper block is equipment block area, and the lower foundation is the main component for resisting environmental load, generally composed of jacket and steel pipe pile.
[0003] The foundation of current offshore booster station is mostly jacket foundation, and the jacket foundation is divided into pile-first type and pile-later type according to the construction technology, wherein the pile-later type includes inner pile type and foot boot type.The pile-first type foundation is a type of foundation in which pile foundation construction is prior to jacket construction.The pile-first type jacket foundation has great difference from other foundation types, mainly reflected in the connection between steel pipe pile and jacket body.The pile-later type jacket foundation has steel pipe pile inside jacket main leg (foot boot sleeve), and the overall construction is relatively simple, and the pile-first type jacket foundation has jacket main leg inserted into steel pipe pile, and the overall construction is relatively difficult.Under the condition that the connection between the pile-first type jacket structure and steel pipe pile is very dependent on grouting material between them, the grouting of both is required to be very strict.
[0004] In view of the difficulty in grouting of the pile-first type jacket foundation of offshore booster platform, it is urgent to develop a grouting structure system suitable for the pile-first type foundation of offshore booster platform, which can effectively and reasonably grout the pile-first type jacket foundation, is safe and reliable, can reduce engineering investment, and can improve the yield of the project as a whole. UTILITY MODEL CONTENTS
[0005] The utility model solves the technical problems: in order to solve the above technical problems, the utility model provides a kind of connecting structure of jacket and steel pipe pile in offshore booster platform.
[0006] The technical scheme adopted by the utility model is: a kind of connecting structure of jacket and steel pipe pile in offshore booster platform, with:
[0007] Steel pipe pile can be anchored into the seabed, and the top of the steel pipe pile is provided with a mounting groove arranged along the axial direction of the steel pipe pile;
[0008] Jacket main leg can be inserted into the mounting groove of the steel pipe pile, and the bottom of the jacket main leg is provided with a first grouting member, and the sidewall of the jacket main leg is provided with a second grouting member;
[0009] The concrete body filled between the steel pipe pile and the jacket main leg through the first grouting member and the second grouting member can bond the steel pipe pile and the jacket main leg. Thus, after the steel pipe pile is anchored into the seabed ground, the jacket is arranged at the corresponding position, the jacket main leg is inserted into the mounting groove at the top of the steel pipe pile, at this time, the first grouting member and the second grouting member on the jacket main leg are between the jacket main leg and the steel pipe pile, after the grouting material is filled into the first grouting member and the second grouting member, the grouting material is filled between the jacket main leg and the steel pipe pile through the first grouting member and the second grouting member, so that the steel pipe pile and the jacket main leg are bonded together. Since the first grouting member and the second grouting member are arranged on the jacket main leg, it is convenient to fill the grouting material between the first grouting member and the second grouting member after the jacket main leg is inserted into the steel pipe pile.
[0010] The first grouting member has an end plate mounted at the bottom of the jacket main leg, the end plate can block the jacket main leg, a through hole is made at the middle position of the end plate, a first grouting pipe is arranged in the jacket main leg, and the end of the first grouting pipe is connected to the through hole position of the end plate. Thus, the end plate can block the bottom end of the jacket main leg, after the grouting material is injected into the first grouting pipe, the grouting material is filled between the jacket main leg and the steel pipe pile from the lower position, and the grouting material can be better filled between the jacket main leg and the steel pipe pile.
[0011] A first support is mounted in the jacket main leg, and the first grouting pipe is fixedly mounted on the inner wall of the jacket main leg through the first support. Thus, the first grouting pipe in the jacket main leg is fixed through the first support.
[0012] A pointed structure is arranged at the bottom end of the jacket main leg, the pointed structure has a main guide pipe mounted on the end plate, at least two guide plates are arranged on the outer wall of the main guide pipe in the circumferential direction of the main guide pipe, and each guide plate is arranged in the radial direction of the main guide pipe. Thus, the guide plates can play a good guiding role when the jacket is lowered, and the jacket main leg can be conveniently inserted into the steel pipe pile.
[0013] The guide plate is trapezoidal, and the wider bottom edge of the guide plate is mounted on the end plate. Thus, the trapezoidal guide plate has a good flow guiding effect when the jacket is lowered.
[0014] At least two branch guide pipes are connected to the side wall of the main guide pipe in the circumferential direction of the main guide pipe, and a placing groove is made on the guide plate at a position corresponding to the branch guide pipe. Thus, when the grouting material is filled between the steel pipe pile and the jacket main leg through the first grouting member, the grouting material can be guided out of the main guide pipe and the branch guide pipe, the grouting material can be filled more uniformly, and the placing groove arranged on the guide plate can fill the grouting material guided out of the branch guide pipe between the steel pipe pile and the jacket main leg.
[0015] The connecting pipe is installed on the end plate of the jacket body at a position corresponding to the through hole, and the first grouting pipe is connected to the connecting pipe. The connecting pipe is in the shape of a trumpet, and the inlet of the connecting pipe is smaller than the outlet. In this way, the first grouting pipe is connected to the connecting pipe installed on the end plate, which facilitates the disassembly and assembly of the first grouting pipe on the end plate, and also alleviates the flow rate of the grouting material in the first grouting pipe.
[0016] The second grouting member has an annular channel steel installed on the inner wall of the jacket leg, and a cavity is formed between the annular channel steel and the jacket leg. The jacket leg has a through hole formed on the side wall at a position corresponding to the annular channel steel. The second grouting pipe is arranged in the jacket leg, and the first grouting pipe is connected to the annular channel steel. In this way, the grouting material is delivered into the cavity between the annular channel steel and the inner wall of the jacket leg through the second grouting pipe, and finally filled into the space between the jacket leg and the steel pipe pile through the through hole on the side wall of the jacket leg. The second grouting member has a better grouting effect in cooperation with the first grouting member.
[0017] A second support is installed in the jacket leg, and the second grouting pipe is fixedly installed on the inner wall of the jacket leg through the second support. In this way, the second grouting pipe in the jacket leg is fixed through the second support.
[0018] A stopper is sleeved on the jacket leg, and the stopper on the jacket leg can block the opening position of the steel pipe pile installation groove when the jacket leg is inserted into the steel pipe pile installation groove. In this way, the stopper can block the opening position of the steel pipe pile installation groove after the jacket leg is inserted into the steel pipe pile, so that the influence of the water flow at the seabed on the coagulation of the grouting material into a concrete body can be reduced when the grouting material is filled between the steel pipe pile and the jacket leg.
[0019] A method for connecting a jacket and a steel pipe pile in an offshore booster platform, which applies the connecting structure of the jacket and the steel pipe pile in the offshore booster platform.
[0020] The construction of the steel pipe pile and the jacket is completed on land.
[0021] The steel pipe pile and the jacket are transported to the corresponding position, and the first grouting pipe and the second grouting pipe on the jacket leg are connected to the storage tank through the material conveying pipe.
[0022] The steel pipe pile is constructed by sinking at the corresponding position on the seabed.
[0023] The jacket is constructed by sinking, so that the jacket leg of the jacket is inserted into the installation groove of the steel pipe pile.
[0024] The grouting material in the storage tank is delivered to the first grouting pipe and the second grouting pipe through the material conveying pipe, and finally filled between the jacket leg and the steel pipe pile.
[0025] The connection between the main legs of the guide frame and the steel pipe pile is completed when the grout has set.
[0026] The beneficial effects of this utility model are as follows: This utility model consists of a main leg of the guide frame, a steel pipe pile, a first grouting component, a second grouting component, and a stop block. By fixing the first and second grouting pipes inside the main leg of the guide frame, this utility model has a simple structure, reduces the amount of grouting pipeline work and welding construction, and saves costs. Through the cooperation of the first and second grouting components, grout can be evenly injected into the bottom of the main leg of the guide frame and between the steel pipe pile and the main leg of the guide frame, reliably connecting the guide frame and the steel pipe pile into a unified load-bearing structure, improving the safety and reliability of the connection structure.
[0027] This invention features a pointed structure at the bottom of the main leg of the jacket frame, an end plate welded to the bottom of the main leg, a through hole in the middle of the end plate, and a connecting pipe installed above the end plate. This facilitates the connection of a first grouting pipe to the connecting pipe, allowing the grout to pass through the first grouting pipe, the connecting pipe, and out through the through hole in the end plate. A main guide pipe is installed below the end plate at a position corresponding to the through hole. At least two guide plates are arranged along the circumference of the main guide pipe on its outer wall, with each guide plate arranged radially along the main guide pipe. The guide plates are trapezoidal, with their wider bottom edges mounted on the end plate. The guide plates support the main guide pipe and guide it during jacket frame placement. At least two branch guide pipes are connected along the circumference of the main guide pipe on its side wall. Placement grooves are formed on the guide plates at positions corresponding to the branch guide pipes. The cooperation between the main guide pipe and the branch guide pipes facilitates the longitudinal and horizontal filling of the grout at the bottom of the main leg of the jacket frame, improving the density of the grouting at the bottom of the main leg.
[0028] This invention features an annular channel steel arranged on the inner wall of the main leg of a guide frame. The annular channel steel is welded around the inside of the main leg, forming a cavity between it and the main leg. Perforations are made on the side wall of the main leg at positions corresponding to the annular channel steel. A second grouting pipe is arranged inside the main leg and connected to the annular channel steel. Grouting material inside the second grouting pipe is injected evenly between the main leg and the steel pipe pile through the annular channel steel and the perforations, ensuring the compactness and uniformity of the grouting material. Attached Figure Description
[0029] Figure 1 : A schematic diagram of the structure of this utility model.
[0030] Figure 2 : A schematic diagram of the structure at the bottom of the main leg of the guide frame in this utility model.
[0031] Figure 3 : Top view of the tip structure in this utility model.
[0032] Figure 4 : The structure diagram of the insertion tip structure in the utility model.
[0033] Figure 5 : The structure diagram of the guide plate in the utility model.
[0034] In the figure: 1, the main leg of the jacket; 2, the steel pipe pile; 3, the concrete body; 4, the first grouting component; 4-1, the first grouting pipe; 4-2, the first support; 4-3, the end plate; 4-4, the connecting pipe; 5, the second grouting component; 5-1, the second grouting pipe; 5-2, the second support; 5-3, the ring channel steel; 6, the insertion tip structure; 6-1, the main guide pipe; 6-2, the guide plate; 6-3, the branch guide pipe; 7, the stop block; 8, the concrete bottom sealing layer. DETAILED DESCRIPTION
[0035] The utility model will be further explained in detail by combining with the drawings and through the embodiment, the following embodiment is the explanation of the utility model and the utility model is not limited to the following embodiment.
[0036] This embodiment is a connecting structure of the jacket and the steel pipe pile 2 in the offshore booster platform.
[0037] In this embodiment, there is the steel pipe pile 2, the steel pipe pile 2 can be anchored into the seabed, the top of the steel pipe pile 2 is provided with the installation groove along the axial direction of the steel pipe pile 2, and the concrete bottom sealing layer 8 is arranged at the bottom of the installation groove.
[0038] In this embodiment, there is the jacket, when the jacket is arranged at the corresponding position, the main leg 1 of the jacket can be inserted and mounted in the installation groove of the steel pipe pile 2, and the first grouting component 4 and the second grouting component 5 are arranged on the main leg 1 of the jacket.When the main leg 1 of the jacket is inserted and mounted on the steel pipe pile 2, the grouting material can be filled between the main leg 1 of the jacket and the steel pipe pile 2 through the first grouting component 4 and the second grouting component 5, and the main leg 1 of the jacket and the steel pipe pile 2 can be connected together after the grouting material is coagulated into the concrete body 3.
[0039] In this embodiment, the stop block 7 is arranged on the main leg 1 of the jacket, when the main leg 1 of the jacket is inserted and mounted on the steel pipe pile 2, the stop block 7 on the main leg 1 of the jacket can play the plugging role to the installation groove of the steel pipe pile 2, and the stop block 7 can effectively alleviate the influence of the seawater flow on the filling and coagulation of the grouting material when the grouting material is filled between the main leg 1 of the jacket and the steel pipe pile 2.
[0040] In the embodiment, the first grouting member 4 has an end plate 4-3 installed at the bottom of the jacket leg 1, the end plate 4-3 can block the jacket leg 1, a through hole is made at the middle position of the end plate 4-3, a connecting pipe 4-4 is arranged at the corresponding position of the through hole on the end plate 4-3, the connecting pipe 4-4 is in the shape of a trumpet, the inlet is small, which can slow down the flow rate of the grouting material in the first grouting pipe 4-1, the first grouting pipe 4-1 is arranged in the jacket leg 1, the end of the first grouting pipe 4-1 is connected to the connecting pipe 4-4 on the end plate 4-3, the first grouting pipe 4-1 is communicated with a feeder, the feeder can deliver the grouting material into the first grouting pipe 4-1. In this way, the grouting material is discharged to the outside of the jacket body through the first grouting pipe 4-1 and the connecting pipe 4-4.
[0041] In the embodiment, the first grouting pipe 4-1 is fixed to the inner wall of the jacket leg 1 through the first support 4-2.
[0042] In the embodiment, a pointed structure 6 is arranged below the end plate 4-3. In the embodiment, the pointed structure 6 has a main guide pipe 6-1 installed at the lower end of the end plate 4-3, at least two guide plates 6-2 are uniformly arranged on the outer wall of the main guide pipe 6-1 along the circumferential direction of the main guide pipe 6-1, in the embodiment, there are eight guide plates 6-2, each guide plate 6-2 is arranged along the radial direction of the main guide pipe 6-1, the guide plate 6-2 is in the shape of a trapezoid, the wider bottom edge of the guide plate 6-2 is installed on the end plate 4-3. In this way, the guide plate 6-2 supports the main guide pipe 6-1 and guides the jacket when it is lowered. At least two branch guide pipes 6-3 are connected to the side wall of the main guide pipe 6-1 along the circumferential direction of the main guide pipe 6-1, the grouting material is discharged from the end of the main guide pipe 6-1 and the branch guide pipe 6-3, a placing groove is made on the guide plate 6-2 at the corresponding position of the branch guide pipe 6-3, the cooperation of the main guide pipe 6-1 and the branch guide pipe 6-3 facilitates the longitudinal and horizontal filling arrangement of the grouting material at the bottom of the jacket leg 1, which is beneficial to improve the compactness of the grouting at the lower part of the jacket leg 1.
[0043] In the embodiment, the second grouting member 5 has an annular channel steel 5-3 installed on the inner wall of the jacket leg 1, a cavity is formed between the annular channel steel 5-3 and the jacket leg 1, a through hole is made on the side wall of the jacket leg 1 at the corresponding position of the annular channel steel 5-3, a second grouting pipe 5-1 is arranged in the jacket leg 1, the first grouting pipe 4-1 is communicated with a feeder, the feeder can deliver the grouting material into the first grouting pipe 4-1. The second grouting pipe 5-1 is connected to the annular channel steel 5-3, a second support 5-2 is installed in the jacket leg 1, the second grouting pipe 5-1 is fixedly installed on the inner wall of the jacket leg 1 through the second support 5-2. The cooperation of the first grouting member 4 and the second grouting member 5 can uniformly grout the grouting material at the bottom of the jacket leg 1 and between the steel pipe pile 2 and the jacket leg 1, which reliably connects the jacket and the steel pipe pile 2 into a whole to bear together, and improves the safety and reliability of the structure at the connection.
[0044] The connecting method of the embodiment is:
[0045] The steel pipe pile 2 and the jacket are transported to the corresponding positions on land, and the first grouting pipe 4-1 and the second grouting pipe 5-1 on the jacket main leg 1 are communicated with the storage tank through the feeding pipe;
[0046] The steel pipe pile 2 and the jacket are transported to the corresponding positions on land, and the first grouting pipe 4-1 and the second grouting pipe 5-1 on the jacket main leg 1 are communicated with the storage tank through the feeding pipe;
[0047] The steel pipe pile 2 is sunk and constructed at the corresponding position on the seabed;
[0048] The jacket is sunk and constructed, and the jacket main leg 1 of the jacket is inserted into the installation groove of the sunk steel pipe pile 2;
[0049] The grouting material in the storage tank is transported to the first grouting pipe 4-1 and the second grouting pipe 5-1 through the feeding pipe and finally filled between the jacket main leg 1 and the steel pipe pile 2;
[0050] When the grouting material is coagulated, the connection between the jacket main leg 1 and the steel pipe pile 2 is completed.
[0051] The above is only the preferred specific implementation method of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.
Claims
1. A structure for connecting a jacket to a steel pipe pile in an offshore booster platform, characterized in that: Have: Steel pipe pile (2) can be anchored into the seabed, the top of the steel pipe pile (2) is provided with installation slot along the axial direction of the steel pipe pile (2); Jacket main leg (1) can be inserted into the installation slot of the steel pipe pile (2), the bottom of the jacket main leg (1) is provided with the first grouting member (4), the sidewall of the jacket main leg (1) is provided with the second grouting member (5); Concrete body (3) is filled between the steel pipe pile (2) and the jacket main leg (1) through the first grouting member (4) and the second grouting member (5), and can bond the steel pipe pile (2) and the jacket main leg (1).
2. The connecting structure of jacket and steel pipe pile in an offshore booster platform according to claim 1, characterized in that: The first grouting member (4) has an end plate (4-3) installed at the bottom of the jacket main leg (1), the end plate (4-3) can block the jacket main leg (1), a through hole is formed at the middle position of the end plate (4-3), a first grouting pipe (4-1) is arranged in the jacket main leg (1), and the end of the first grouting pipe (4-1) is connected to the through hole position of the end plate (4-3).
3. The connecting structure of jacket and steel pipe pile in an offshore booster platform according to claim 2, characterized in that: A first support (4-2) is installed in the jacket main leg (1), and the first grouting pipe (4-1) is fixedly installed on the inner wall of the jacket main leg (1) through the first support (4-2).
4. The connecting structure of jacket and steel pipe pile in an offshore booster platform according to claim 2, characterized in that: A pointed structure (6) is arranged at the bottom end of the jacket main leg (1), the pointed structure (6) has a main guide pipe (6-1) installed on the end plate (4-3), at least two guide plates (6-2) are arranged on the outer wall of the main guide pipe (6-1) along the circumferential direction of the main guide pipe (6-1), and each guide plate (6-2) is arranged along the radial direction of the main guide pipe (6-1).
5. The connecting structure of jacket and steel pipe pile in an offshore booster platform according to claim 4, characterized in that: The guide plate (6-2) is trapezoidal, and the wider bottom of the guide plate (6-2) is installed on the end plate (4-3).
6. The connecting structure of jacket and steel pipe pile in an offshore booster platform according to claim 4, characterized in that: At least two branch guide pipes (6-3) are connected to the sidewall of the main guide pipe (6-1) along the circumferential direction of the main guide pipe (6-1), and a placing groove is formed in the guide plate (6-2) at a position corresponding to the branch guide pipe (6-3).
7. The connecting structure of jacket and steel pipe pile in an offshore booster platform according to claim 2, characterized in that: A connecting pipe (4-4) is installed on the end plate (4-3) in the jacket main body at a position corresponding to the through hole, and the first grouting pipe (4-1) is connected to the connecting pipe (4-4); the connecting pipe (4-4) is trumpet-shaped, and the inlet of the connecting pipe (4-4) is smaller than the outlet.
8. The connecting structure of jacket and steel pipe pile in an offshore booster platform according to claim 1, characterized in that: The second grouting member (5) has an annular channel steel (5-3) installed on the inner wall of the jacket main leg (1), a cavity is formed between the annular channel steel (5-3) and the jacket main leg (1), a through hole is formed on the sidewall of the jacket main leg (1) at a position corresponding to the annular channel steel (5-3), a second grouting pipe (5-1) is arranged in the jacket main leg (1), the second grouting pipe (5-1) is connected to the annular channel steel (5-3), and a second support (5-2) is installed in the jacket main leg (1), and the second grouting pipe (5-1) is fixedly installed on the inner wall of the jacket main leg (1) through the second support (5-2).
9. The connecting structure of jacket and steel pipe pile in an offshore booster platform according to claim 1, characterized in that: A stop block (7) is sleeved on the jacket main leg (1), and the stop block (7) on the jacket main leg (1) can block the opening position of the installation slot of the steel pipe pile (2) when the jacket main leg (1) is inserted into the installation slot of the steel pipe pile (2).