Anti-corrosion pile for coastal area
By designing immersion, drying, and splash-resistant segmental structures for anti-corrosion piles, combined with sleeves and anode blocks, the corrosion resistance problem of pile foundations in the water-air interface area was solved, thereby improving the stability and corrosion resistance of the structure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA CONSTR FIRST BUILDING (GRP) CORP LTD
- Filing Date
- 2025-05-08
- Publication Date
- 2026-05-15
AI Technical Summary
In existing technologies, the corrosion resistance of pile foundations located in the area where water and air meet is insufficient. In particular, the coating is prone to aging and peeling under wave erosion, which increases maintenance costs.
Design an anti-corrosion pile, including a water-immersed segment, a dry segment, and a splash segment. A sleeve covers the splash segment. The sleeve is made of metal and connected to an anode block. A water passage and a buoyancy ball are provided to prevent seawater accumulation, thereby enhancing structural stability and anti-corrosion performance.
It effectively reduces chloride ion intrusion, lowers the risk of concrete cracking and spalling, extends the life of anti-corrosion coating layers, improves maintenance convenience, reduces corrosion risk, and enhances overall durability and safety.
Smart Images

Figure CN224243937U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building construction technology, and in particular to an anti-corrosion pile for use in coastal areas. Background Technology
[0002] Pile foundations are load-bearing components that transfer all or part of the load of a building to the foundation soil and possess a certain degree of rigidity and bending resistance. In marine environments, pile foundations need to pass through the splash zone where the water and air meet. This area is exposed to a high-salt environment with alternating wet and dry conditions and is subject to wave erosion, which makes the concrete of the pile body prone to cracking and spalling, affecting the service life of the project.
[0003] In existing technologies, the common approach to improve the corrosion resistance of piles is to add coatings or use special materials. However, coatings are prone to aging under sunlight exposure and have insufficient weather resistance; especially under the continuous erosion of waves, the coating is very easy to peel off, which greatly increases the cost of later maintenance.
[0004] Therefore, how to improve the corrosion resistance of pile foundations located in the area where water and air meet is a technical problem that urgently needs to be solved in the existing technology. Utility Model Content
[0005] The purpose of this invention is to address the problem of how to improve the corrosion resistance of pile foundations located in the area where water and air meet, and to provide an anti-corrosion pile for coastal areas.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0007] A corrosion-resistant pile for coastal areas includes a pile body, which comprises a submerged segment, a dry segment, and a splash segment. The submerged segment is located below the water surface, the dry segment is exposed to the air, and the splash segment is disposed between the submerged segment and the dry segment, corresponding to the area directly eroded by waves. An integrally formed support platform is provided on the submerged segment, and a sleeve is provided on the support platform. The diameter of the sleeve is larger than the diameter of the pile body, and the end of the sleeve extends to the dry segment.
[0008] Preferably, the sleeve is made of metal, and an anode block is connected to the sleeve, wherein the reducing power of the anode block is greater than that of the sleeve.
[0009] Preferably, the anode block is submerged below the water surface.
[0010] Preferably, the anode block and the sleeve are detachably connected.
[0011] Preferably, the sleeve and the support platform are bolted together, and a first rubber pad is provided at the bottom of the sleeve to improve the tightness of the fit between the sleeve and the support platform.
[0012] Preferably, the sleeve is divided into a first half-sleeve and a second half-sleeve along its diameter, the first half-sleeve and the second half-sleeve are bolted together, and a second rubber pad is provided between the first half-sleeve and the second half-sleeve to improve the tightness of the fit between the first half-sleeve and the second half-sleeve.
[0013] Preferably, the support platform has a water passage extending through it, which includes a first water passage section and a second water passage section. The first water passage section is located above the second water passage section, and its inner diameter is smaller than that of the second water passage section. A buoyancy ball is also provided inside the second water passage section, and its diameter is smaller than that of the second water passage section. The buoyancy ball can float up and down with the change of water level in the second water passage section and is used to block the opening of the first water passage section. A retaining ring is also provided at the end of the second water passage section to confine the buoyancy ball inside the second water passage section.
[0014] Preferably, the top of the sleeve is provided with a cover plate, which is used to close the top opening of the sleeve.
[0015] Preferably, the sleeve is further provided with steel pipe steps for operators to climb.
[0016] Preferably, the lower part of the support platform is provided with a yoke plate, the yoke plate is connected to the water-immersed section, and the yoke plate is used to strengthen the structural strength of the support platform.
[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:
[0018] 1. The anti-corrosion pile for coastal areas described in this utility model, with the sleeve covering the splash segment, allows the splash segment to be kept in a relatively stable and dry environment, effectively reducing chloride ion intrusion into the concrete. Furthermore, it prevents waves from directly eroding the splash segment, thereby reducing the risk of cracking and spalling of the concrete in the splash segment and improving the overall durability and safety of the anti-corrosion pile. In addition, when the surface of the splash segment is coated with an anti-corrosion coating, the sleeve also prevents waves from directly eroding the anti-corrosion coating layer, thus extending the lifespan of the anti-corrosion coating layer. Moreover, when maintenance or replacement of the anti-corrosion coating is required, the sleeve's blocking effect allows the splash segment to be completely exposed to the air, thereby improving the quality and convenience of maintenance operations.
[0019] 2. The anti-corrosion pile for coastal areas described in this utility model is equipped with the water passage channel. When the water level is higher than the bearing platform, the buoyancy ball is located at the top of the second water passage section. At this time, the buoyancy ball can close the first water passage section, preventing water from entering the sleeve through the first water passage section. When the surge causes the water level at the bearing platform to drop, the buoyancy ball falls to the bottom of the second water passage section. At this time, the first water passage section and the second water passage section are connected, and the water accumulated inside the sleeve can be discharged to the external environment through the water passage channel, thereby preventing seawater from accumulating inside the sleeve, effectively reducing the corrosion problems that may be caused by seawater immersion, and further reducing the risk of corrosion of the sleeve and the splash section. Attached Figure Description
[0020] Figure 1 This is a frontal cross-sectional structural diagram of an anti-corrosion pile used in coastal areas;
[0021] Figure 2 yes Figure 1 A schematic diagram of the structure of A in the middle;
[0022] Figure 3 This is a top-view cross-sectional structural diagram of an anti-corrosion pile used in coastal areas.
[0023] The markings in the diagram are: 1-Pile body, 2-Water-immersed segment, 3-Dry segment, 4-Splash segment, 5-Bearing platform, 6-Sleeve, 7-Anode block, 8-First rubber pad, 9-First half-sleeve, 10-Second half-sleeve, 11-Second rubber pad, 12-Water passage, 13-First water passage section, 14-Second water passage section, 15-Buoyancy ball, 16-Retaining ring, 17-Cover plate, 18-Steel pipe step, 19-Halfing plate. Detailed Implementation
[0024] The present invention will now be described in detail with reference to the accompanying drawings.
[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.
[0026] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.
[0027] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.
[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0029] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0030] Example 1: As Figures 1 to 3 As shown, the present invention discloses an anti-corrosion pile for coastal areas, comprising a pile body 1, wherein the pile body 1 includes a water-immersed section 2, a dry section 3, and a wave-splash section 4. The water-immersed section 2 is located below the water surface, the dry section 3 is exposed to the air, and the wave-splash section 4 is disposed between the water-immersed section 2 and the dry section 3, corresponding to the area directly eroded by waves. A bearing platform 5 integrally formed therewith is provided on the water-immersed section 2, and a sleeve 6 is provided on the bearing platform 5. The diameter of the sleeve 6 is larger than the diameter of the pile body 1, and the end of the sleeve 6 extends to the dry section 3.
[0031] The anti-corrosion pile for coastal areas described in this invention, with the sleeve 6 covering the splash segment 4, provides two advantages: firstly, it keeps the splash segment 4 in a relatively stable, dry environment, effectively reducing chloride ion intrusion into the concrete; secondly, it prevents waves from directly eroding the splash segment 4, thereby reducing the risk of cracking and spalling of the concrete in the splash segment and improving the overall durability and safety of the anti-corrosion pile. Furthermore, when the surface of the splash segment 4 is coated with an anti-corrosion coating, the sleeve 6 also prevents waves from directly eroding the anti-corrosion coating layer, thus extending the lifespan of the anti-corrosion coating layer. Moreover, when maintenance or replacement of the anti-corrosion coating is required, the sleeve 6's blocking effect allows the splash segment 4 to be completely exposed to the air, thereby improving the quality and convenience of maintenance operations.
[0032] As a preferred embodiment, based on the above method, the sleeve 6 is made of metal material, and an anode block 7 is connected to the sleeve 6. The reducing power of the anode block 7 is greater than that of the sleeve 6.
[0033] Specifically, the anode block 7 is made of zinc alloy. In this embodiment, the anode block 7 and the sleeve 6 are connected by a conductive material to form a sacrificial anode cathodic protection structure. The anode block 7 gradually dissolves in the electrochemical reaction with the sleeve 6, thereby protecting the sleeve 6 from corrosion and extending the service life of the overall structure.
[0034] In a preferred embodiment, based on the above method, the anode block 7 is further immersed below the water surface. With this structural arrangement, the oxidation products formed on the surface of the anode block 7 are more easily shed by the water flow, reducing the passivation layer adhering to the surface of the anode block 7, thereby ensuring the activity of the anode block 7. Furthermore, the immersion of the anode block 7 in water effectively reduces the circuit resistance and promotes the formation of a stable current path between the anode and cathode.
[0035] As a preferred embodiment, based on the above method, the anode block 7 and the sleeve 6 are further provided as a separable connection.
[0036] Specifically, in this embodiment, the anode block 7 and the sleeve 6 are connected by bolts. This structural arrangement improves the convenience of replacing the anode block 7.
[0037] Example 2: As Figures 1 to 3 As shown, the anti-corrosion pile for coastal areas described in this utility model, based on the above method, further includes a bolted connection between the sleeve 6 and the bearing platform 5, and a first rubber pad 8 is provided at the bottom of the sleeve 6. The first rubber pad 8 is used to improve the tightness of the fit between the sleeve 6 and the bearing platform 5.
[0038] This structural design improves the ease of connection between the sleeve 6 and the support platform 5. Furthermore, the first rubber pad 8 prevents water from seeping through the gap between the sleeve 6 and the support platform 5, ensuring a dry internal environment for the sleeve 6 and further reducing the risk of corrosion to the sleeve 6 and the splash segment 4.
[0039] In a preferred embodiment, based on the above method, the sleeve 6 is further divided into a first half-sleeve 9 and a second half-sleeve 10 along its diameter. The first half-sleeve 9 and the second half-sleeve 10 are bolted together, and a second rubber pad 11 is provided between the first half-sleeve 9 and the second half-sleeve 10. The second rubber pad 11 is used to improve the tightness of the fit between the first half-sleeve 9 and the second half-sleeve 10. With this structural arrangement, the sleeve 6 can be replaced after damage, thereby further improving the practicality of this invention in actual use.
[0040] As a preferred embodiment, based on the above method, the sleeve 6 is further provided with steel pipe steps 18, which are used for operators to climb.
[0041] Specifically, in this embodiment, the steel pipe steps 18 are welded to the sleeve 6. This structural design makes it safer and more convenient for operators to maintain and replace the anode blocks 7, thereby further improving the practicality of this invention in actual use. In addition, the surface of the steel pipe steps 18 is coated with anti-slip paint to prevent operators from accidentally slipping during climbing, ensuring the safety of the operation.
[0042] Example 3: As Figure 1 and Figure 2 As shown, the anti-corrosion pile for coastal areas according to this utility model, based on the above-mentioned method, further includes a water passage 12 running through the bearing platform 5. The water passage 12 includes a first water passage section 13 and a second water passage section 14. The first water passage section 13 is located above the second water passage section 14, and the inner diameter of the first water passage section 13 is smaller than the inner diameter of the second water passage section 14. A buoyancy ball 15 is also provided in the second water passage section 14. The diameter of the buoyancy ball 15 is smaller than the inner diameter of the second water passage section 14. The buoyancy ball 15 can float up and down with the change of water level in the second water passage section 14. The buoyancy ball 15 is used to block the opening of the first water passage section 13. A retaining ring 16 is also provided at the end of the second water passage section 14. The retaining ring 16 is used to restrict the buoyancy ball 15 inside the second water passage section 14.
[0043] Specifically, in this embodiment, the water passage 12 is pre-embedded inside the support platform 5. The surface of the retaining ring 16 is provided with through holes. This embodiment takes into account that under extreme weather conditions, the surge violently impacts the sleeve 6, potentially causing water to rush into the sleeve 6 from the top, leading to the sleeve 6 and the splash segment 4 being soaked and eroded by seawater.
[0044] Based on this, the water passage 12 is provided in this embodiment. When the water level is higher than the support platform 5, the buoyancy ball 15 is located at the top of the second water passage section 14. At this time, the buoyancy ball 15 can close the first water passage section 13, preventing water from entering the sleeve 6 through the first water passage section 13. When the surge causes the water level at the support platform 5 to drop, the buoyancy ball 15 falls to the bottom of the second water passage section 14. At this time, the first water passage section 13 and the second water passage section 14 are connected, and the water accumulated inside the sleeve 6 can be discharged to the external environment through the water passage 12, thereby preventing seawater from accumulating inside the sleeve 6, effectively reducing the corrosion problem that may be caused by seawater immersion, and further reducing the risk of corrosion of the sleeve 6 and the splash section 4.
[0045] As a preferred embodiment, based on the above method, a cover plate 17 is further provided on the top of the sleeve 6, the cover plate 17 being used to close the top opening of the sleeve 6. This structural arrangement prevents water from entering and seeping into the interior of the sleeve 6 from the top, further ensuring the dryness of the internal environment of the sleeve 6, thereby reducing the risk of corrosion of the sleeve 6 and the splash segment 4.
[0046] As a preferred embodiment, based on the above method, the lower part of the support platform 5 is provided with a yoke plate 19, the yoke plate 19 is connected to the water-immersed segment 2, and the yoke plate 19 is used to strengthen the structural strength of the support platform 5.
[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A corrosion-resistant pile for use in coastal areas, characterized in that, The pile includes a main body, which comprises a submerged segment, a dry segment, and a splash segment. The submerged segment is located below the water surface, the dry segment is exposed to the air, and the splash segment is located between the submerged segment and the dry segment, corresponding to the area directly eroded by waves. The submerged segment is provided with a support platform integrally formed therewith, and a sleeve is provided on the support platform. The diameter of the sleeve is larger than the diameter of the main body of the pile, and the end of the sleeve extends to the dry segment.
2. The anti-corrosion pile for coastal areas according to claim 1, characterized in that, The sleeve is made of metal and has an anode block connected to it. The reducing power of the anode block is greater than that of the sleeve.
3. The anti-corrosion pile for coastal areas according to claim 2, characterized in that, The anode block is submerged below the water surface.
4. The anti-corrosion pile for coastal areas according to claim 3, characterized in that, The anode block and the sleeve are detachably connected.
5. The anti-corrosion pile for coastal areas according to claim 1, characterized in that, The sleeve and the support platform are bolted together. A first rubber pad is provided at the bottom of the sleeve to improve the tightness of the fit between the sleeve and the support platform.
6. The anti-corrosion pile for coastal areas according to claim 5, characterized in that, The sleeve is divided into a first half-sleeve and a second half-sleeve along its diameter. The first half-sleeve and the second half-sleeve are bolted together. A second rubber pad is provided between the first half-sleeve and the second half-sleeve to improve the tightness of the fit between the first half-sleeve and the second half-sleeve.
7. The anti-corrosion pile for coastal areas according to claim 6, characterized in that, The sleeve is also provided with steel pipe steps, which are used for operators to climb.
8. The anti-corrosion pile for coastal areas according to claim 1, characterized in that, The support platform has a water passage running through it, which includes a first water passage section and a second water passage section. The first water passage section is located above the second water passage section, and its inner diameter is smaller than that of the second water passage section. A buoyancy ball is also provided inside the second water passage section, and its diameter is smaller than that of the second water passage section. The buoyancy ball can float up and down with the water level in the second water passage section and is used to block the opening of the first water passage section. A retaining ring is also provided at the end of the second water passage section to confine the buoyancy ball inside the second water passage section.
9. The anti-corrosion pile for coastal areas according to claim 8, characterized in that, The top of the sleeve is provided with a cover plate, which is used to close the top opening of the sleeve.
10. The anti-corrosion pile for coastal areas according to claim 9, characterized in that, The lower part of the support platform is provided with a haunch plate, which is connected to the water-immersed section. The haunch plate is used to strengthen the structural strength of the support platform.