Offshore wind turbine jacket foundation pile sleeve structure and using method thereof
By introducing the level of the central agency at the foundation of the seaside wind farm, the pilot pile legs and steel pipe pile head stitching heads are used to stitch the tone of the routine friction problem, and the construction accuracy and structural safety are improved.
Patent Information
- Application Number
- CN202411715997.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-01-28
AI Technical Summary
During the construction of offshore wind farms, the installation environment of the fixed conduit frame foundation is harsh, and there is friction when the conduit frame pile legs are spliced and leveled, resulting in high accuracy requirements and cumbersome construction, which affects the safety and durability of the structure.
Design a layer of sea -fans guidelines, including duct racks, steel pipe piles, and level pairs. By setting up horizontal agencies on the head of the steel pipe pile pile, the cooperation of the hydraulic oil cylinder and slider uses the level of the pile legs of the pipe rack to avoid the collision friction with the steel pipe pile head.
Improve construction accuracy, reduce the friction between the pile legs and steel pipe pile heads, and enhance the safety and durability of the structure.
Smart Images
Figure CN119373138A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of wind power foundation structures, and more specifically, to an offshore wind turbine conductor frame foundation pile sleeve structure and a use method thereof. Background Art
[0002] In the context of the dual carbon goals, wind power generation, as a clean energy, has broad development prospects. In order to obtain better wind resources, wind farms are gradually moving towards the deep sea, the water depth of the foundation is constantly increasing, and wind turbine units are also developing towards large megawatt units. Fixed jacket foundations are widely used because they can adapt to deeper water depths. Jacket construction is divided into "first pile method" and "later pile method". The jacket foundation of the "first pile method" has strong adaptability and low requirements for seabed flatness; the jacket foundation of the "later pile method" has high requirements for seabed flatness, and the jacket levelness needs to be continuously adjusted during the construction process. The jacket foundation of the "later pile method" is often used for a relatively small number of offshore booster stations, while the jacket foundation of the "first pile method" is often used for a relatively large number of wind turbines.
[0003] The installation environment of the "pile-first method" is harsh and the installation accuracy requirements are high. When the conductor frame pile legs and steel pipe piles are spliced and leveled, there will inevitably be contact friction between individual pile foundations, which makes the assembly and leveling process cumbersome and even affects the safety and durability of the structure. Summary of the invention
[0004] In view of this, an object of the present invention is to provide an offshore wind turbine jacket foundation pile sleeve structure and a use method thereof, aiming to solve the problems existing in the prior art.
[0005] According to a first aspect of the present invention, there is provided an offshore wind turbine jacket foundation pile sleeve structure, which comprises: a jacket, a steel pipe pile and a horizontal centering mechanism; wherein: The upper end of the steel pipe pile is a steel pipe pile head, the lower end of the conductor frame is a conductor frame leg, and the conductor frame leg is inserted into the steel pipe pile head; The horizontal centering mechanism is arranged at the top end of the steel pipe pile head, and the horizontal centering mechanism includes a plurality of tightening components distributed along the circumference of the steel pipe pile head. The tightening components include a sliding guide rail, a hydraulic cylinder and a slider. The sliding guide rail is fixed on the steel pipe pile head, and the hydraulic cylinder is fixed on the sliding guide rail. The slider is slidably arranged on the sliding guide rail and fixedly connected to the front end of the telescopic rod of the hydraulic cylinder. The hydraulic cylinder can push the slider to abut against the pile leg of the conductor frame.
[0006] Preferably, a leg conical head is provided at the bottom of the conductor frame leg.
[0007] Preferably, the cross section of the slider is semicircular, and the sliding guide rail is provided with a semicircular sliding groove matching the slider, and the semicircular sliding groove extends along the length direction of the sliding guide rail and passes through two end surfaces of the sliding guide rail.
[0008] Preferably, the hydraulic cylinder is detachably connected to the sliding guide rail.
[0009] Preferably, a plurality of groups of the tightening assemblies are evenly distributed along the circumference of the steel pipe pile head.
[0010] Preferably, the sliding guide rail is welded and fixed to the top end of the steel pipe pile head.
[0011] Preferably, the jacket legs are further provided with reinforcing wing plates.
[0012] According to a second aspect of the present invention, a method for using the above-mentioned offshore wind turbine jacket foundation pile sleeve structure is provided, which comprises the following steps: Step 1: driving the steel pipe pile into the soil so that the head of the steel pipe pile is exposed from the soil surface; Step 2: inserting the jacket leg of the jacket into the head of the steel pipe pile; Step 3: horizontally align the jacket pile legs inserted into the steel pipe pile heads through a horizontal centering mechanism.
[0013] Preferably, in the step 1, before driving the steel pipe pile into the soil, the horizontal centering mechanism is assembled with the head of the steel pipe pile on the land surface.
[0014] Preferably, in step three, after the conductor frame pile legs are horizontally centered by the horizontal centering mechanism, the concrete grouting area formed between the conductor frame pile legs and the steel pipe pile heads is filled with mixed soil slurry, and then the hydraulic cylinder and the slider in the horizontal centering mechanism are removed.
[0015] The offshore wind turbine conductor frame foundation pile sleeve structure and the use method thereof provided by the present invention have the following beneficial effects: by arranging a horizontal centering mechanism on the steel pipe pile head, after the conductor frame pile legs are inserted into the steel pipe pile head, the conductor frame pile legs can be horizontally centered relative to the steel pipe pile head through the horizontal centering mechanism, thereby improving construction accuracy, avoiding collision and friction between part of the conductor frame pile legs and the steel pipe pile head, and improving the safety of the structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The above and other objects, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings.
[0017] Figure 1 A schematic structural diagram of a foundation pile sleeve structure of an offshore wind turbine jacket according to an embodiment of the present invention is shown.
[0018] Figure 2 A schematic structural diagram of the connection between a horizontal centering mechanism and a steel pipe pile head in a foundation pile sleeve structure of an offshore wind turbine jacket according to an embodiment of the present invention is shown.
[0019] Figure 3 A schematic diagram of a top view of the structure in which a sliding guide rail is arranged on a steel pipe pile head in a foundation pile sleeve structure of an offshore wind turbine jacket according to an embodiment of the present invention is shown.
[0020] In the figure: 1. jacket frame; 2. reinforced wing plate; 3. jacket leg; 4. conical head of leg; 5. head of steel pipe pile; 6. sliding guide rail; 7. hydraulic cylinder; 8. slide block; 9. concrete grouting area. DETAILED DESCRIPTION
[0021] Various embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. In each of the accompanying drawings, the same elements are represented by the same or similar reference numerals. For the sake of clarity, the various parts in the accompanying drawings are not drawn to scale.
[0022] The present invention provides a foundation pile sleeve structure for an offshore wind turbine jacket, see Figure 1 and Figure 2 The offshore wind turbine jacket foundation pile sleeve structure includes: a jacket, a steel pipe pile and a horizontal centering mechanism; wherein the upper end of the steel pipe pile is a steel pipe pile head 5, and the lower end of the jacket is a jacket leg 3, and the jacket leg 3 is inserted into the steel pipe pile head 5; the horizontal centering mechanism is arranged at the top of the steel pipe pile head 5, and the horizontal centering mechanism includes a plurality of groups of tightening components distributed along the circumferential direction of the steel pipe pile head 5, and the tightening components include a sliding guide rail 6, a hydraulic cylinder 7 and a slider 8, the sliding guide rail 6 is fixed on the steel pipe pile head 5, the hydraulic cylinder 7 is fixed on the sliding guide rail 6, the slider 8 is slidably arranged on the sliding guide rail 6 and fixedly connected to the front end of the telescopic rod of the hydraulic cylinder 7, and the hydraulic cylinder 7 can push the slider 8 to abut against the jacket leg 3.
[0023] Specifically, the steel pipe pile is used to be inserted into the seabed soil by piling, and the steel pipe pile head 5 is exposed from the mud surface. The conductor frame includes a conductor frame body 1 at the upper end and a conductor frame leg 3 at the lower end. The conductor frame leg 3 is used to be inserted into the steel pipe pile head 5. The conductor frame body 1 is located above the water surface. The steel pipe pile is used to support and fix the conductor frame. The conductor frame leg 3 is a structure for connecting the conductor frame with the steel pipe pile. The steel pipe pile head 5 and the conductor frame leg 3 are both made of round steel pipes. The existing conductor frame leg is directly inserted into the steel pipe pile head, and the conductor frame leg will collide and rub with the steel pipe pile head, which will affect the structural safety and durability. The present invention provides a horizontal centering mechanism on the steel pipe pile head 5, and after the jacket leg 3 is inserted into the steel pipe pile head 5, the jacket leg 3 is horizontally centered, so that the jacket leg 3 is horizontally centered relative to the steel pipe pile head 5, and then the concrete grouting area 9 formed between the jacket leg 3 and the steel pipe pile head 5 is grout-filled, thereby improving the safety of the structure.
[0024] In order to facilitate the smooth insertion of the jacket leg 3 into the steel pipe pile head 5, a leg conical head 4 is provided at the bottom of the jacket leg 3. The leg conical head 4 is a nearly frustum-shaped structure with a small lower end and a large upper end. The upper end of the leg conical head 4 is welded and fixed to the bottom end of the jacket leg 3 by welding. The outer diameter of the jacket leg 3 and the large end diameter of the leg conical head 4 are both smaller than the inner diameter of the steel pipe pile head 5, so that after the jacket leg 3 is inserted into the steel pipe pile head 5, there is a gap between the jacket leg 3 and the steel pipe pile head 5 to form a concrete grouting area 9. After the jacket leg 3 is horizontally adjusted and centered by the horizontal centering mechanism, the concrete grouting area 9 can be grouted and filled through the opening formed between the top of the steel pipe pile head 5 and the jacket leg 3.
[0025] Furthermore, the cross section of the slider 8 is semicircular, and the sliding guide rail 6 is provided with a semicircular slide groove matching the slider 8, and the semicircular slide groove extends along the length direction of the sliding guide rail 6 and penetrates the two end surfaces of the sliding guide rail 6. In this embodiment, the sliding guide rail 6 and the slider 8 are both made of steel material, and the sliding guide rail 6 is welded and fixed to the top of the steel pipe pile head 5, and the sliding guide rail 6 is arranged along the radial direction of the steel pipe pile head 5. The slider 8 is placed in the semicircular slide groove of the sliding guide rail 6, and the slider 8 is pushed to move toward or away from the conductor frame pile leg 3 by the telescopic rod of the hydraulic cylinder 7. Among them, the setting position of the hydraulic cylinder 7 on each of the sliding guide rails 6 is consistent, so that when the conductor frame pile leg 3 is adjusted for centering, the telescopic rod of each hydraulic cylinder 7 can push the slider 8 to move the same length.
[0026] The hydraulic cylinder 7 is detachably connected to the sliding guide rail 6. With such arrangement, after the connection between the conductor frame pile leg 3 and the steel pipe pile head 5 is completed, the semicircular slider 8 and the hydraulic cylinder 7 can be removed from the sliding guide rail 6 for reuse, and the sliding guide rail 6 and the steel pipe pile head 5 are welded together to form a whole without being disassembled. Among them, the semicircular slider 8 can be fixedly connected to the front end of the telescopic rod of the hydraulic cylinder 7 by bolt connection or threaded connection. In specific implementation, a limit block can be provided at the bottom of the cylinder barrel of the hydraulic cylinder 7, and limit holes can be correspondingly provided on the limit block and the sliding guide rail 6. The connection between the hydraulic cylinder 7 and the sliding guide rail 6 is realized by inserting a limit pin into the limit hole on the limit block of the hydraulic cylinder 7 and the sliding guide rail 6. It can be understood that the hydraulic cylinder 7 can also be connected to the sliding guide rail 6 by other detachable connection methods, such as bolt connection.
[0027] Furthermore, a plurality of groups of the tightening components are evenly distributed along the circumference of the steel pipe pile head 5. With such an arrangement, when the jacket leg 3 is horizontally centered by the horizontal centering mechanism, a force can be evenly applied to the circumference of the jacket leg 3, thereby being able to more efficiently complete the centering adjustment of the jacket leg 3 and effectively improve the accuracy of the jacket leg 3 during installation. Figure 3 In this embodiment, the horizontal centering mechanism is provided with four sets of tightening components, and the four sliding guide rails 6 of the four sets of tightening components are arranged in sequence at intervals of 90° along the circumference of the steel pipe pile head 5.
[0028] Furthermore, the jacket leg 3 is also provided with a reinforcing wing plate 2. The reinforcing wing plate 2 is arranged in a circle along the circumference of the jacket leg 3, and the reinforcing wing plate 2 is used to connect with the steel pipe pile head 5, so that the jacket leg 3 and the steel pipe pile head 5 are firmly connected as a whole. In specific implementation, the reinforcing wing plate 2 can be connected to the top of the steel pipe pile head 5 by bolt connection or welding.
[0029] The present invention also provides a method for using the above-mentioned offshore wind turbine jacket foundation pile sleeve structure, the method comprising the following steps: Step 1: driving the steel pipe pile into the soil so that the pile head 5 of the steel pipe pile is exposed from the soil surface.
[0030] Specifically, before the steel pipe pile is driven into the soil, the horizontal centering mechanism is assembled with the steel pipe pile head 5 on the land surface. This includes welding a sliding guide rail 6 to the top of the steel pipe pile head 5, and installing a hydraulic cylinder 7 and a slider 8 on the sliding guide rail 6. After the steel pipe pile is driven into the soil, the steel pipe pile head 5 is exposed from the mud surface, and the jacket leg 3 is installed underwater.
[0031] Step 2: inserting the jacket leg 3 of the jacket into the steel pipe pile head 5.
[0032] Specifically, the jacket is lifted vertically using lifting equipment, and the jacket leg 3 at the lower end of the jacket is vertically inserted into the steel pipe pile head 5 until the reinforcing wing plate 2 on the jacket leg 3 abuts against the top of the steel pipe pile head 5 .
[0033] Step 3: horizontally centering the jacket pile leg 3 inserted into the steel pipe pile head 5 by means of a horizontal centering mechanism.
[0034] Specifically, the multiple groups of tightening components in the horizontal centering mechanism work together. During the horizontal centering adjustment, the slider 8 moves toward the jacket leg 3 on the sliding guide rail 6 under the action of the hydraulic cylinder 7. After the slider 8 comes into contact with the jacket leg 3, it continues to move under the thrust of the hydraulic cylinder 7. The sliders 8 in the multiple groups of tightening components tighten the jacket leg 3 in the radial direction in the circumferential direction of the jacket leg 3 at the same time, thereby completing the horizontal centering adjustment of the jacket leg 3.
[0035] After the jacket leg 3 is horizontally centered by the horizontal centering mechanism, concrete grouting area 9 formed between the jacket leg 3 and the steel pipe pile head 5 is filled with soil slurry, and at the same time, the connection between the jacket leg 3 and the steel pipe pile head 5 is strengthened, and the reinforcing wing plate 2 on the jacket leg 3 is connected to the steel pipe pile head 5, and then the hydraulic cylinder 7 and the slide block 8 in the horizontal centering mechanism are removed, and the hydraulic cylinder 7 and the slide block 8 can be reused after being removed.
[0036] In summary, the offshore wind turbine conductor frame foundation pile sleeve structure and the use method thereof provided by the present invention, by setting a horizontal centering mechanism on the steel pipe pile head, after the conductor frame pile legs are inserted into the steel pipe pile head, the conductor frame pile legs can be horizontally centered relative to the steel pipe pile head through the horizontal centering mechanism, thereby improving construction accuracy, avoiding collision and friction between part of the conductor frame pile legs and the steel pipe pile head, and improving the safety of the structure.
[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.
[0038] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.
Claims
1. An offshore wind turbine jacket foundation pile sleeve structure, characterized in that: include: Jacket, steel pipe piles and horizontal centering mechanism; among them, The upper end of the steel pipe pile is a steel pipe pile head, the lower end of the conductor frame is a conductor frame leg, and the conductor frame leg is inserted into the steel pipe pile head; The horizontal centering mechanism is arranged at the top end of the steel pipe pile head, and the horizontal centering mechanism includes a plurality of tightening components distributed along the circumference of the steel pipe pile head. The tightening components include a sliding guide rail, a hydraulic cylinder and a slider. The sliding guide rail is fixed on the steel pipe pile head, and the hydraulic cylinder is fixed on the sliding guide rail. The slider is slidably arranged on the sliding guide rail and fixedly connected to the front end of the telescopic rod of the hydraulic cylinder. The hydraulic cylinder can push the slider to abut against the pile leg of the conductor frame.
2. The offshore wind turbine jacket foundation pile sleeve structure according to claim 1, characterized in that: A leg conical head is provided at the bottom of the conductor frame leg.
3. The offshore wind turbine jacket foundation pile sleeve structure according to claim 1, characterized in that: The cross section of the slider is semicircular, and the sliding guide rail is provided with a semicircular sliding groove matching the slider, and the semicircular sliding groove extends along the length direction of the sliding guide rail and passes through the two end surfaces of the sliding guide rail.
4. The offshore wind turbine jacket foundation pile sleeve structure according to claim 1, characterized in that: The hydraulic cylinder is detachably connected to the sliding guide rail.
5. The offshore wind turbine jacket foundation pile sleeve structure according to claim 1, characterized in that: A plurality of groups of the tightening components are evenly distributed along the circumference of the steel pipe pile head.
6. The offshore wind turbine jacket foundation pile sleeve structure according to claim 1, characterized in that: The sliding guide rail is welded and fixed to the top end of the steel pipe pile head.
7. The offshore wind turbine jacket foundation pile sleeve structure according to claim 1, characterized in that: The pipe frame pile legs are also provided with reinforcing wing plates.
8. A method for using the offshore wind turbine jacket foundation pile sleeve structure according to any one of claims 1 to 7, characterized in that: The steps include: Step 1: driving the steel pipe pile into the soil so that the head of the steel pipe pile is exposed from the soil surface; Step 2: inserting the jacket leg of the jacket into the head of the steel pipe pile; Step 3: horizontally align the jacket pile legs inserted into the steel pipe pile heads through a horizontal centering mechanism.
9. The method for using the offshore wind turbine jacket foundation pile sleeve structure according to claim 8, characterized in that: In the step 1, before the steel pipe pile is driven into the soil, the horizontal centering mechanism is assembled with the head of the steel pipe pile on the land surface.
10. The method for using the offshore wind turbine jacket foundation pile sleeve structure according to claim 8, characterized in that: In the step three, after the jacket pile legs are horizontally centered by the horizontal centering mechanism, the concrete grouting area formed between the jacket pile legs and the steel pipe pile heads is filled with soil slurry, and then the hydraulic cylinder and the slider in the horizontal centering mechanism are removed.