Multi-section high-bearing four-pile jacket foundation construction positioning device

Abstract

The application discloses a multi-section high-bearing four-pile jacket foundation construction positioning device applied to the field of building foundations, which replaces the existing whole truss type jacket by a center support frame and an underwater guide frame, reduces the number of hydraulic cylinders required when leveling the multi-pile jacket, and reduces the difficulty of jacket sinking positioning and leveling; meanwhile, the center support frame is increased in bed setting stability by filling seawater or concrete mortar in the hollow structure center cylinder and the filling pipe; in addition, the center support frame is fixed by sinking pile before the underwater guide frame is installed, so that the stability of the center support frame is further enhanced; besides, the overwater guide frame installed on the upper portion of the center support frame provides visual guidance when the steel pipe pile is sunk, so that the difficulty of positioning and guiding when the steel pipe pile is sunk is further reduced, and the operation efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of building foundations, and in particular to a multi-segment high-load-bearing four-pile jacket foundation construction positioning device. Background Technology

[0002] The jacket frame used for offshore wind turbine pile driving is a key support structure for deep-sea wind power. It is usually composed of a spatial truss frame consisting of hollow main legs, longitudinal and transverse braces, and pile foundation sleeves. It is fixed to the seabed by multiple steel pipe piles. Its core function is to provide a stable foundation for the wind turbine, evenly transfer the upper load to the pile foundation, and at the same time serve as a pile driving positioning guide to ensure construction accuracy. The jacket frame needs to be installed stably on the seabed through a bed-sitting process: it is first prefabricated on land and then towed to the sea. It is initially positioned using its own weight or negative pressure penetration technology. Then, the annular gap between the pile and the jacket frame is filled with high-strength grouting material to complete the fixation.

[0003] A patent application with publication number CN117988380A discloses a positioning device and method for offshore wind turbine jacket foundations. The positioning device connects the positioning plug in the fixed groove of the positioning seat to the flange connecting plate to initially position the jacket body. Then, a lifting rod passes through the through groove and uses the spring force to push the moving plate and the plug rod to fix them on the surface of the flange connecting plate, thereby further stabilizing the jacket body and achieving precise positioning. The motor drives the threaded rod to rotate, which drives the sleeve and the working platform to rise. The fixed block slides in the slide groove, allowing the working platform to be adjusted to different heights.

[0004] The existing patent application with publication number CN115897578A discloses an underwater pile driving positioning system for the foundation steel pipe piles of a deep-water four-pile guide frame. The system consists of four vertical pile frames and connecting beams forming a framework on the main base. Cage openings are provided at the top of the vertical pile frames, and upper and lower pile gripping supports are provided at the corners. Four sets of leveling devices (including anti-sinking plates and leveling lifting mechanisms) are installed at the bottom of the pile frames, and four sets of pile gripping devices (including upper and lower pile grippers) are placed in the inner cavity of the pile frames. With the help of hydraulic, monitoring and control systems, the pile driving process can be automatically leveled and accurately gripped, realizing high-precision visual positioning construction of deep-water steel pipe piles.

[0005] The aforementioned prior art discloses a technical solution for achieving two-stage positioning and fixing of the jacket using positioning seats and plug rods, and also discloses a technical solution for achieving leveling and positioning of the jacket using four sets of leveling devices. However, the prior art still has shortcomings. The existing multi-pile jacket adopts an integral truss structure, which requires multiple sets of leveling hydraulic mechanisms. The operation is cumbersome, time-consuming, and inconvenient for transportation and sinking installation. Summary of the Invention

[0006] The core of this invention lies in solving the problem of cumbersome self-positioning and leveling operations caused by the use of an integral truss structure for multi-pile guide frames in the prior art by adopting a segmented structure including a central support frame and an underwater guide frame. At the same time, the positioning and leveling difficulties are further reduced by using positioning pipe piles and an underwater guide frame.

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A multi-segment high-load-bearing four-pile guide frame foundation construction positioning device includes a central support frame and an underwater guide frame fixedly connected to the central support frame. The central support frame includes a central cylinder, a central anti-sinking plate fixedly connected to the lower end of the central cylinder, a bearing plate fixedly connected to the outer wall of the central cylinder, and multiple hydraulic cylinders evenly distributed in a circle fixedly connected to the lower end face of the bearing plate. The piston rod of the hydraulic cylinder is hinged to the front end of a side anti-sinking plate. The central cylinder is a hollow cylindrical structure, and its upper end is fixedly connected to a filling pipe. The underwater guide frame includes a sliding cylinder sleeved on the outside of the central cylinder. The lower end of the sliding cylinder abuts against the bearing plate. The bearing plate is connected to the sliding cylinder by bolts. Four guide cylinders are provided on the outside of the sliding cylinder. The guide cylinders and the sliding cylinders are fixedly connected by a support beam.

[0009] Furthermore, the central cylinder includes a wide cylindrical section and a cylindrical section integrally formed with the wide cylindrical section. The lower end of the wide cylindrical section is fixedly connected to the upper end face of the central anti-sinking plate, and the inner diameter of the wide cylindrical section is larger than the inner diameter of the cylindrical section.

[0010] Furthermore, both the central anti-sinking plate and the side anti-sinking plates are rectangular block structures, and both have recessed cavities on their upper surfaces.

[0011] Furthermore, the bearing plate is a cylindrical structure with an inverted L-shaped cross-section, which includes a lower cylindrical part and an upper disc part. The bearing plate is fixedly connected to the central cylinder by welding. The cylinder body of the hydraulic cylinder is fixedly connected to the side wall of the bearing plate by fixing bolts. The piston rod of the hydraulic cylinder is hinged to a hinge seat that is fixedly connected to the side anti-sinking plate.

[0012] Furthermore, the guide cylinder is a vertical cylindrical structure with an hourglass cavity. The hourglass cavity consists of conical cavities at the upper and lower ends and a cylindrical cavity connecting the two conical cavities. The inner diameter of the cylindrical cavity is adapted to the steel pipe pile to be installed.

[0013] Furthermore, the support beams are inclined with the inner side lower than the outer side, and connecting beams are fixedly connected between adjacent guide cylinders. Multiple connecting beams are located in the same horizontal plane. Both the support beams and connecting beams are truss structures. The sliding cylinder is a cylinder with an L-shaped cross-section, which includes an upper circular tube section and a lower disc section. The inner wall of the sliding cylinder and the outer wall of the central cylinder are slidably connected.

[0014] Furthermore, a guide pipe is installed along the central axis of the central tube, with its lower end extending to the lower end face of the central anti-sinking plate and its upper end extending to the upper end face of the central tube. An annular cavity is formed between the central tube and the guide pipe, and the filling pipe is connected to the annular cavity. A positioning pipe pile is slidably connected inside the guide pipe.

[0015] Furthermore, a water-based guide frame is fixedly connected to the upper end of the central support frame. The water-based guide frame includes a sleeve fixedly connected to the central cylinder. Four equidistant connecting rods are fixedly connected to the outer wall of the sleeve. A guide ring is fixedly connected to the end of the connecting rod away from the sleeve. The central axis of the guide ring coincides with the central axis of the guide cylinder.

[0016] Furthermore, the guide ring is semi-circular, and the upper end of the central cylinder is provided with a narrow cylindrical part. The sleeve is fitted onto the narrow cylindrical part and connected to the narrow cylindrical part by bolts.

[0017] Compared with the prior art, the advantages of this invention are: (1) The present invention replaces the existing integral jacket frame with a central support frame and an underwater guide frame. Only the central support frame needs to be leveled and the underwater guide frame fixed on the central support frame to complete the positioning and leveling of the jacket frame. This reduces the number of hydraulic cylinders required, reduces the difficulty of positioning and leveling the jacket frame, and improves the operational efficiency of positioning and leveling. In addition, the jacket frame adopts a segmented structure including a central support frame and an underwater guide frame, which facilitates the transportation and hoisting installation of the jacket frame, further reducing the operational difficulty and improving operational efficiency. Furthermore, through the hollow central cylinder and the injection pipe, after leveling, the stability of the central support frame is increased by injecting seawater or concrete mortar.

[0018] (2) The present invention uses a guide pipe and a positioning pipe pile that penetrate the central tube to fix the central support frame before installing the underwater guide frame, thereby further enhancing the stability of the central support frame and improving the positioning effect. In addition, the underwater guide frame installed on the upper part of the central support frame provides visual guidance when the steel pipe pile is laid, further reducing the difficulty of positioning and guiding the steel pipe pile during laying and improving the operation efficiency. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the exploded structure of the present invention; Figure 4 This is a cross-sectional view of the central cylinder in this invention; Figure 5 This is a three-dimensional structural diagram of the central anti-sinking plate in this invention; Figure 6This is an exploded structural diagram of the underwater guide frame in this invention; Figure 7 This is a cross-sectional view of the guide cylinder in this invention; Figure 8 This is a schematic diagram of the installation process of the present invention; Figure 9 This is a schematic diagram of the assembly structure of the guide tube and the positioning pipe pile in this invention; Figure 10 This is a schematic diagram of the installation of the positioning pipe pile in this invention.

[0020] Explanation of the labels in the diagram: 1. Central support frame; 2. Underwater guide frame; 3. Surface guide frame; 4. Central cylinder; 401. Wide cylinder section; 402. Circular cylinder section; 403. Narrow cylinder section; 5. Central anti-sinking plate; 501. Cavity; 6. Bearing plate; 7. Hydraulic cylinder; 8. Side anti-sinking plate; 9. Sliding cylinder; 10. Support beam; 11. Guide cylinder; 1101. Hourglass cavity; 12. Connecting beam; 13. Tilt sensor; 14. Sleeve; 15. Connecting rod; 16. Guide ring; 17. Filling pipe; 18. Guide pipe; 19. Positioning pipe pile. Detailed Implementation

[0021] The technical solutions will now be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention.

[0022] First implementation method Please see Figures 1-3 In one embodiment of the present invention, a multi-segment high-bearing-load four-pile guide frame foundation construction positioning device includes a central support frame 1 and an underwater guide frame 2 fixedly connected to the central support frame 1. The central support frame 1 includes a central cylinder 4, a central anti-sinking plate 5 fixedly connected to the lower end of the central cylinder 4, a bearing plate 6 fixedly connected to the outer wall of the central cylinder 4, and a plurality of hydraulic cylinders 7 evenly distributed in a circle fixedly connected to the lower end face of the bearing plate 6. The piston rod of the hydraulic cylinder 7 is hinged to a side anti-sinking plate 8. When the guide frame is seated, the hydraulic cylinder 7 drives the side anti-sinking plate 8 to move, thereby adjusting the level of the central support frame 1. An tilt sensor 13 is fixedly connected to the upper end of the central cylinder 4. Both the hydraulic cylinder 7 and the tilt sensor 13 are electrically connected to the computer in the control room. Please see Figures 1-3 The underwater guide frame 2 includes a sliding cylinder 9 sleeved on the outside of the central cylinder 4. The lower end of the sliding cylinder 9 abuts against the bearing plate 6. The bearing plate 6 is connected to the sliding cylinder 9 by bolts. Four guide cylinders 11 are provided on the outside of the sliding cylinder 9. The guide cylinders 11 and the sliding cylinder 9 are fixedly connected by a support beam 10. Please see Figure 4The central cylinder 4 is a hollow cylindrical structure, and the upper end is fixedly connected to the injection pipe 17. After the central support frame 1 is leveled, seawater or concrete mortar is injected into the central cylinder 4 through the injection pipe 17.

[0023] For details, please refer to Figure 8 The following steps are included when installing a jacket support: Step 1: Use the crane of the crane ship to lower the central support frame 1 to the seabed, activate the tilt sensor 13 to monitor the levelness of the central support frame 1 in real time, and adjust the extension and retraction length of multiple hydraulic cylinders 7 based on the monitored levelness data to perform preliminary leveling of the central support frame 1. Step 2: After leveling is completed, seawater or concrete mortar is injected into the inner cavity of the central cylinder 4 through the injection pipe 17. During the injection process, the extension and retraction length of the hydraulic cylinder 7 is adjusted in real time based on the tilt angle data detected by the tilt sensor 13 to achieve real-time leveling operation. Step 3: After the seawater or concrete mortar is added, the underwater guide frame 2 is lowered onto the bearing plate 6 using the crane of the crane ship, and the sliding cylinder 9 and the bearing plate 6 are fixed and locked with bolts to complete the installation of the guide frame.

[0024] Compared to traditional jacket foundation positioning devices, this invention replaces the existing integral jacket with a central support frame 1 and an underwater guide frame 2. Positioning and leveling of the jacket can be completed simply by leveling the central support frame 1 and then fixing the underwater guide frame 2 onto it. This reduces the number of hydraulic cylinders 7 required, simplifies the positioning and leveling process, and improves operational efficiency. Furthermore, the segmented structure of the jacket, including the central support frame 1 and the underwater guide frame 2, facilitates transportation and hoisting installation, further reducing operational difficulty and improving efficiency. Additionally, the hollow central cylinder 4 and the injection pipe 17 allow for the injection of seawater or concrete mortar after leveling, increasing the stability of the central support frame 1.

[0025] Please see Figure 2 and Figure 4 The central cylinder 4 includes a wide cylindrical portion 401 and a cylindrical portion 402 integrally formed with the wide cylindrical portion 401. The lower end of the wide cylindrical portion 401 is fixedly connected to the upper end face of the central anti-sinking plate 5. The inner diameter of the wide cylindrical portion 401 is larger than the inner diameter of the cylindrical portion 402.

[0026] Specifically, by providing a wide cylindrical section 401, when seawater or concrete mortar is injected, the seawater or concrete mortar is mainly concentrated inside the wide cylindrical section 401, so that the center of gravity of the central cylinder 4 is close to the seabed, further improving the stability of the central support frame 1.

[0027] Please see Figure 2 and Figure 5Both the central anti-sinking plate 5 and the side anti-sinking plate 8 are rectangular block structures, and both have a recessed cavity 501 on their upper surface.

[0028] Specifically, the recesses 501 created on the central anti-sinking plate 5 and the side anti-sinking plates 8 facilitate the entry of seabed silt into the recesses 501, thereby increasing the anti-slip capability of the central anti-sinking plate 5 and the side anti-sinking plates 8 and preventing the central support frame 1 from sinking excessively.

[0029] Please see Figure 2 The bearing plate 6 is a cylindrical structure with an inverted L-shaped cross section, which includes a lower cylindrical part and an upper disc part. The bearing plate 6 is fixedly connected to the central cylinder 4 by welding. The cylinder body of the hydraulic cylinder 7 is fixedly connected to the side wall of the bearing plate 6 by fixing bolts. The piston rod of the hydraulic cylinder 7 is hinged to a hinge seat that is fixedly connected to the side anti-sinking plate 8.

[0030] Specifically, when the guide cylinder 11 is subjected to force, the force is transmitted sequentially to the sliding cylinder 9 and the bearing plate 6 through the support beam 10, and finally to the central cylinder 4, thereby improving the bearing capacity of the central support frame 1.

[0031] Please see Figure 2 and Figure 7 The guide cylinder 11 is a vertical cylindrical structure with an hourglass cavity 1101. The hourglass cavity 1101 consists of conical cavities at the upper and lower ends and a cylindrical cavity connecting the two conical cavities. The inner diameter of the cylindrical cavity is adapted to the steel pipe pile to be installed.

[0032] Specifically, the hourglass cavity 1101 facilitates the insertion of the steel pipe pile into the guide cylinder 11, thereby enabling the guidance and positioning of the steel pipe pile.

[0033] Please see Figure 2 and Figure 6 The support beam 10 is inclined with the inner side lower than the outer side. A connecting beam 12 is fixedly connected between adjacent guide cylinders 11. Multiple connecting beams 12 are located in the same horizontal plane. Both the support beam 10 and the connecting beam 12 are truss structures. The sliding cylinder 9 is a cylinder with an L-shaped cross section, which includes an upper circular tube part and a lower circular disc part. The inner wall of the sliding cylinder 9 is slidably connected to the outer wall of the central cylinder 4.

[0034] Specifically, the guide tube 11 is supported by the support beam 10 and horizontally connected and fixed by the connecting beam 12, so that the underwater guide frame 2 has a high load capacity and a good limiting and guiding effect on the large mass steel pipe pile.

[0035] Second implementation method Based on the first implementation, please refer to Figure 4 and Figure 9A guide pipe 18 is provided through the central axis of the central cylinder 4. The lower end of the guide pipe 18 extends to the lower end face of the central anti-sinking plate 5, and the upper end extends to the upper end face of the central cylinder 4. An annular cavity is formed between the central cylinder 4 and the guide pipe 18. The filling pipe 17 is connected to the annular cavity. A positioning pipe pile 19 is slidably connected inside the guide pipe 18.

[0036] For details, please refer to Figure 10 After leveling the central support frame 1, the positioning pipe pile 19 is hoisted and inserted into the guide pipe 18. Then, the positioning pipe pile 19 is hammered into the seabed by a hydraulic impact hammer. Inserting the positioning pipe pile 19 improves the positioning stability of the central support frame 1, which facilitates the subsequent installation of the underwater guide frame 2 and further improves the positioning stability.

[0037] Please see Figures 1-3 The upper end of the central support frame 1 is fixedly connected to the water guide frame 3. The water guide frame 3 includes a sleeve 14 fixedly connected to the central cylinder 4. Four equidistant connecting rods 15 are fixedly connected to the outer wall of the sleeve 14. A guide ring 16 is fixedly connected to the end of the connecting rod 15 away from the sleeve 14. The central axis of the guide ring 16 coincides with the central axis of the guide cylinder 11.

[0038] Specifically, by providing a guide ring 16, when hoisting the steel pipe pile, the steel pipe pile first fits against the guide ring 16 to pre-position the steel pipe pile. Then, the steel pipe pile is vertically lowered and inserted into the guide cylinder 11, which further improves the positioning efficiency of the steel pipe pile and reduces the difficulty of inserting the steel pipe pile into the guide cylinder 11, thereby reducing the difficulty and time consumption of underwater operations and further improving the positioning efficiency.

[0039] Compared to traditional guide frames, this invention uses a guide pipe 18 and a positioning pipe pile 19 that pass through the central cylinder 4 to fix the central support frame 1 by driving piles before installing the underwater guide frame 2, which further enhances the stability of the central support frame 1 and improves the positioning effect. In addition, the underwater guide frame 3 installed on the upper part of the central support frame 1 provides visual guidance during the sinking of the steel pipe pile, which further reduces the difficulty of positioning and guiding the steel pipe pile during sinking and improves the operational efficiency.

[0040] Please see Figure 2 , Figure 3 and Figure 4 The guide ring 16 is semi-circular, and the upper end of the central cylinder 4 is provided with a narrow cylinder part 403. The sleeve 14 is sleeved on the narrow cylinder part 403 and connected to the narrow cylinder part 403 by bolts.

[0041] Specifically, the narrow cylindrical section 403 facilitates the quick installation of the sleeve 14, thereby facilitating the quick positioning and installation of the water guide frame 3. In addition, the semi-circular guide ring 16 facilitates the insertion and positioning of the steel pipe pile. It should be noted that the narrow cylindrical section 403 is integrally formed with the cylindrical section 402 and the wide cylindrical section 401, and the diameter of the narrow cylindrical section 403 is smaller than the diameter of the cylindrical section 402.

[0042] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A multi-stage high bearing capacity four-pile jacket foundation construction positioning device, characterized in that, The system includes a central support frame (1) and an underwater guide frame (2) fixedly connected to the central support frame (1). The central support frame (1) includes a central cylinder (4). A central anti-sinking plate (5) is fixedly connected to the lower end of the central cylinder (4). A bearing plate (6) is fixedly connected to the outer wall of the central cylinder (4). A plurality of hydraulic cylinders (7) evenly distributed in a circle are fixedly connected to the lower end face of the bearing plate (6). A side anti-sinking plate (8) is hinged to the front end of the piston rod of the hydraulic cylinder (7). The central cylinder (4) is a hollow cylindrical structure, and a filling pipe (17) is fixedly connected to its upper end. The underwater guide frame (2) includes a sliding cylinder (9) sleeved on the outside of the central cylinder (4). The lower end of the sliding cylinder (9) abuts against the bearing plate (6). The bearing plate (6) is connected to the sliding cylinder (9) by bolts. Four guide cylinders (11) are provided on the outside of the sliding cylinder (9). The guide cylinders (11) and the sliding cylinder (9) are fixedly connected by a support beam (10).

2. The multi-stage high bearing four-pile jacket foundation construction positioning device according to claim 1, characterized in that, The central cylinder (4) includes a wide cylinder (401) and a cylindrical part (402) integrally formed with the wide cylinder (401). The lower end of the wide cylinder (401) is fixedly connected to the upper end face of the central anti-sinking plate (5). The inner diameter of the wide cylinder (401) is larger than the inner diameter of the cylindrical part (402).

3. The multi-stage high bearing four-pile jacket foundation construction positioning device according to claim 1, characterized in that, The central anti-sinking plate (5) and the side anti-sinking plate (8) are both rectangular block structures, and both have a cavity (501) on their upper surface.

4. The multi-stage high bearing four-pile jacket foundation construction positioning device according to claim 1, characterized in that, The bearing plate (6) is a cylindrical structure with an inverted L-shaped cross section, including a lower cylindrical tube part and an upper disc part. The bearing plate (6) is fixedly connected to the central cylinder (4) by welding. The cylinder body of the hydraulic cylinder (7) is fixedly connected to the side wall of the bearing plate (6) by fixing bolts. The piston rod of the hydraulic cylinder (7) is hinged to the front end of a hinge seat that is fixedly connected to the side anti-sinking plate (8).

5. The multi-stage high bearing four-pile jacket foundation construction positioning device according to claim 1, characterized in that, The guide cylinder (11) is a vertical cylindrical structure with an hourglass cavity (1101). The hourglass cavity (1101) consists of conical cavities at the upper and lower ends and a cylindrical cavity connecting the two conical cavities. The inner diameter of the cylindrical cavity is adapted to the steel pipe pile to be installed.

6. The multi-segment high-bearing-load-bearing four-pile jacket foundation construction positioning device according to claim 1, characterized in that, The support beam (10) is inclined with the inner side lower than the outer side. A connecting beam (12) is fixedly connected between adjacent guide cylinders (11). Multiple connecting beams (12) are located in the same horizontal plane. Both the support beam (10) and the connecting beam (12) are truss structures. The sliding cylinder (9) is a cylinder with an L-shaped cross section. It includes an upper circular tube part and a lower circular disc part. The inner wall of the sliding cylinder (9) and the outer wall of the central cylinder (4) are slidably connected.

7. The multi-segment high-bearing-load-bearing four-pile jacket foundation construction positioning device according to claim 1, characterized in that, A guide tube (18) is provided through the central axis of the central cylinder (4). The lower end of the guide tube (18) extends to the lower end face of the central anti-sinking plate (5), and its upper end extends to the upper end face of the central cylinder (4). An annular cavity is formed between the central cylinder (4) and the guide tube (18). The filling pipe (17) is connected to the annular cavity. A positioning pipe pile (19) is slidably connected inside the guide tube (18).

8. The multi-segment high-bearing-load-bearing four-pile jacket foundation construction positioning device according to claim 1, characterized in that, The upper end of the central support frame (1) is fixedly connected to a water guide frame (3). The water guide frame (3) includes a sleeve (14) fixedly connected to the central cylinder (4). Four equidistant connecting rods (15) are fixedly connected to the outer wall of the sleeve (14). A guide ring (16) is fixedly connected to one end of the connecting rod (15) away from the sleeve (14). The central axis of the guide ring (16) coincides with the central axis of the guide cylinder (11).

9. A multi-segment high-bearing-load-bearing four-pile jacket foundation construction positioning device according to claim 8, characterized in that, The guide ring (16) is semi-circular, and the upper end of the central cylinder (4) is provided with a narrow cylinder part (403). The sleeve (14) is sleeved on the narrow cylinder part (403) and connected to the narrow cylinder part (403) by bolts.

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