Novel jacket inserting tip structure
The novel insert structure with a steel brush effectively removes marine growth from steel pipe piles, improving grouting quality and bond strength in offshore wind turbine foundations.
Patent Information
- Application Number
- CN202422398767.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-30
AI Technical Summary
The exposure of steel pipe piles in seawater leads to rapid growth of marine organisms, affecting grouting quality and bonding strength, and the existing technology lacks effective measures.
A new type of catheter insertion structure is designed, including the bottom seal plate at the bottom end of the insertion tip and the steel brush structure on the outer periphery. The steel brush structure consists of vertical grooved sections, horizontal scraping sections and transition scraping sections to clean up the marine organisms on the inner walls of steel pipe piles and ensure grouting quality and sealing.
Through the design of the steel brush structure, the inner wall of the steel pipe piles can be effectively cleaned, the strength and quality of grouting are improved, and the normal operation of the conduit frame foundation is ensured.
Smart Images
Figure CN223103592U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of offshore wind power, in particular to a novel jacket pile tip structure. Background Technique
[0002] With the saturation of the development of offshore waters, offshore wind power is moving towards deeper waters. In recent years, the water depth of offshore wind power projects is basically 40 - 50m. Compared with other foundation types, the jacket foundation has obvious advantages within this water depth range.
[0003] The jacket foundation consists of an upper steel frame structure and a lower pile foundation. The upper and lower structures are connected by filling a high-performance grouting material in the annular gap between the inner and outer steel pipes, so that the upper jacket pile tip and the lower pile foundation form a stressed whole. The bearing performance of the grouting connection section structure is the key to ensuring the normal operation of the fan, and the cleanliness of the surface of the steel pipe pile in the grouting connection section is an important factor affecting the grouting quality. After the pile driving of the lower pile foundation is completed, it is very difficult to hoist the jacket and grout in time. The steel pipe pile is exposed to seawater, and marine organisms grow rapidly on the inner wall of the steel pipe pile (mostly hard marine organisms, such as oysters). In addition, during the pile driving process, soil is squeezed into the pile, and there may be silt attached to the grouting section. The above factors hinder the bonding between the grouting material and the pile body, resulting in a significant reduction in grouting quality and bonding strength. Currently, there is a lack of an effective measure for this situation. Summary of the Invention
[0004] The technical problem to be solved by the utility model is that the steel pipe pile is exposed to seawater, and marine organisms grow rapidly on the inner wall of the steel pipe pile, resulting in a significant reduction in grouting quality and bonding strength.
[0005] To solve the above technical problem, the technical solution adopted by the utility model is: a novel jacket pile tip structure, including a pile tip inserted at the top inside the steel pipe pile. A bottom sealing plate is arranged at the bottom end of the pile tip. A circular steel brush structure is arranged at the bottom of the outer peripheral surface of the pile tip. The steel brush structure includes a vertical slotting section at the bottom, a horizontal scraping section in the middle, and an over-scraping section at the top. The steel brush structure is coaxially arranged with the pile tip.
[0006] Preferably, the vertical slotting section includes vertical plates evenly distributed around the axis of the pile tip. The bottom ends of the vertical plates are fixedly connected to the top surface of the bottom sealing plate. The vertical plates are in a triangular structure, and one end of the vertical plate is located outside the bottom sealing plate.
[0007] Preferably, the horizontal scraping section is a circular scraper coaxially sleeved on the pile tip. The height inside the scraper is lower than the height outside. The vertical plates are in a triangular structure, and the top surface of the vertical plates is fixedly connected to the bottom surface of the scraper.
[0008] Preferably, the transition scraping section is an interference ring arranged on the outer edge of the scraper, the interference ring is an annular structure, and the outer thickness of the interference ring is smaller than the inner thickness.
[0009] Preferably, an annular boss is provided on the top of the bottom sealing plate, the outer side wall of the boss is an inclined surface, and the inner side surface of the vertical plate is connected to the outer side wall of the boss.
[0010] Preferably, a corrosion-resistant layer is provided on the outer wall of the steel brush structure.
[0011] The utility model provides a novel conductor frame plug tip structure. By means of a steel brush welded at the lower part of the plug tip, the interior of the steel pipe pile is relatively sealed, which can greatly reduce the growth of marine organisms. During the sinking process of the conductor frame, the friction between the steel brush and the inner wall of the steel pipe pile is utilized to clean the attachments on the inner wall of the steel pipe pile, thereby achieving the cleaning of the inner wall of the steel pipe pile, which can greatly improve the strength and quality of grouting. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The utility model is further described below in conjunction with the accompanying drawings and embodiments:
[0013] Figure 1 It is a schematic diagram of the internal structure of an embodiment of the utility model.
[0014] Figure 2 It is a front view of the plug tip in the embodiment of the utility model.
[0015] Figure 3 It is a schematic diagram of the structure of the plug tip in the embodiment of the utility model.
[0016] In the figure: 1. Steel pipe pile; 2. Steel brush structure; 3. Insert tip; 4. Bottom sealing plate; 5. Vertical plate; 6. Scraper; 7. Interference ring; 8. Boss. DETAILED DESCRIPTION
[0017] like Figures 1-3 As shown, the utility model proposes a novel catheter rack tip structure, including a tip 3 inserted into the top of a steel pipe pile 1, a bottom sealing plate 4 is provided at the bottom end of the tip 3, and an annular steel brush structure 2 is provided at the bottom of the outer circumference of the tip 3. The steel brush structure 2 includes a vertical groove section at the bottom, a horizontal scraping section in the middle and an over-scraping section at the top, and the steel brush structure 2 is coaxially arranged with the tip 3.
[0018] After the steel pipe pile 1 is fixed underwater, the tip 3 is inserted into the steel pipe pile 1. During the process of inserting the tip 3 into the steel pipe pile 1, the marine organisms attached to the inner side of the steel pipe pile 1 are scraped off by the steel brush structure 2. The vertical grooving section is used to cut the marine organisms as a whole, and after being cut into multiple sections, the marine organisms are scraped off by the horizontal scraping section. Finally, through the close extrusion scraping between the excessive scraping section and the inner wall of the steel pipe pile 1, the sealing performance between the tip 3 and the steel pipe pile 1 is ensured, as well as the quality of cleaning the marine organisms on the inner wall of the steel pipe pile 1, realizing the cleaning of the inner wall of the steel pipe pile, and greatly improving the strength and quality of subsequent grouting.
[0019] As Figure 2 and Figure 3 shown. The vertical grooving section includes vertical plates 5 evenly distributed around the axis of the tip 3. The bottom ends of the vertical plates 5 are fixedly connected to the top surface of the bottom sealing plate 4. The vertical plates 5 are of triangular structure, and one end of the vertical plate 5 is located outside the bottom sealing plate 4. The outer edge of the vertical plate 5 is located outside the bottom sealing plate 4. During the process of the tip 3 moving along the steel pipe pile 1, the outer edge of the vertical plate 5 will cut the marine organisms attached to the inner side of the steel pipe pile 1, making it impossible for them to be connected as a whole, facilitating the subsequent horizontal scraping section to scrape off the marine organisms.
[0020] As Figure 2 and Figure 3 shown. The horizontal scraping section is an annular scraping plate 6 coaxially sleeved on the tip 3. The height of the inner side of the scraping plate 6 is lower than that of the outer side. The vertical plate 5 is of triangular structure, and the top surface of the vertical plate 5 is fixedly connected to the bottom surface of the scraping plate 6. After the marine organisms on the inner wall of the steel pipe pile 1 are grooved, the scraping plate 6 slides on the inner wall of the steel pipe pile 1, scraping off the cut marine organisms, realizing the cleaning of the inner wall of the steel pipe pile 1.
[0021] As Figure 2 and Figure 3 shown. The transition scraping section is an interference ring 7 arranged on the outer edge of the scraping plate 6. The interference ring 7 is of annular structure, and the outer thickness of the interference ring 7 is smaller than the inner thickness. The interference ring 7 is used to closely fit with the inner wall of the steel pipe pile 1, further improving the quality of cleaning the inner wall of the steel pipe pile 1 and at the same time improving the sealing performance.
[0022] As Figure 2 shown. The top of the bottom sealing plate 4 is provided with an annular boss 8. The outer side wall of the boss 8 is an inclined surface, and the inner side surface of the vertical plate 5 is connected to the outer side wall of the boss 8. The boss 8 is used to prevent marine organisms from remaining on the bottom sealing plate 4 and can also provide stable support for the vertical plate 5.
[0023] As a preferred embodiment of the present utility model. The outer wall of the steel brush structure 2 is provided with a corrosion-resistant layer for extending the service life of the steel brush structure 2.
Claims
1. A novel jacket spud structure, including a spud (3) inserted at the inner top of a steel pipe pile (1), and a bottom sealing plate (4) is arranged at the bottom end of the spud (3), characterized in that: At the bottom of the outer peripheral surface of the plug tip (3), there is an annular steel brush structure (2). The steel brush structure (2) includes a vertically slotted section at the bottom, a horizontally scraping section in the middle, and a transitional scraping section at the top. The steel brush structure (2) is coaxially arranged with the plug tip (3).
2. The novel jacket tip structure according to claim 1, wherein: The vertically slotted section includes vertical plates (5) evenly distributed around the axis of the plug tip (3). The bottom ends of the vertical plates (5) are fixedly connected to the top surface of the bottom sealing plate (4). The vertical plates (5) are in a triangular structure, and one end of the vertical plate (5) is located outside the bottom sealing plate (4).
3. The novel jacket tip structure according to claim 2, characterized in that: The horizontally scraping section is an annular scraping plate (6) coaxially sleeved on the plug tip (3). The height inside the scraping plate (6) is lower than the height outside. The vertical plate (5) is in a triangular structure, and the top surface of the vertical plate (5) is fixedly connected to the bottom surface of the scraping plate (6).
4. The novel jacket tip structure according to claim 3, wherein: The transitional scraping section is an interference fit ring (7) arranged on the outer edge of the scraping plate (6). The interference fit ring (7) is in an annular structure, and the outer thickness of the interference fit ring (7) is smaller than the inner thickness.
5. The novel jacket spudcan structure according to claim 2, characterized in that: At the top of the bottom sealing plate (4), there is an annular boss (8). The outer wall of the boss (8) is an inclined surface, and the inner side surface of the vertical plate (5) is connected to the outer wall of the boss (8).
6. The novel jacket tip structure according to any one of claims 1-5, characterized in that: On the outer wall of the steel brush structure (2), there is a corrosion-resistant layer.