A marine piling system
By installing hydraulic clamps on the upper part of the guide frame, setting sliding N-shaped clips on the lower part, and combining them with a rear tie rod and a reinforcement layer, the collision problem of traditional guide frames during offshore piling is solved, achieving greater construction flexibility and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE SECOND ENG COMPANY OF CCCC FOURTH HARBOR ENG
- Filing Date
- 2025-07-21
- Publication Date
- 2026-07-31
AI Technical Summary
When driving piles at sea, the hydraulic clamps of traditional guide frames are prone to colliding with the already driven steel pipe piles when the net distance between the piles is small and the tide level is low, which can lead to equipment damage and construction instability.
The guide frame is equipped with only one hydraulic clamp at the top and an N-shaped clamp at the bottom. The N-shaped clamp matches the outer diameter of the steel pipe pile and can be slidably adjusted. Combined with the rear tie rod and reinforcement layer, the stability of the guide frame is improved and equipment interference is reduced.
It effectively avoids collisions between the hydraulic clamps at the bottom of the guide frame and the driven piles, improves the flexibility and stability of construction, simplifies the structure of the guide frame, reduces weight, and facilitates offshore construction.
Smart Images
Figure CN224578725U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of guide frame technology, and in particular to an offshore piling system. Background Technology
[0002] When constructing a berthing platform at sea, the offshore pile driving process using steel pipe piles is typically required. This process involves using a specialized pile driving vessel for pile foundation construction. The pile driving vessel is equipped with a pile frame, lifting equipment, anchor winch, hydraulic system, diesel generator system, and pile hammer, among other equipment. During the pile driving process, the pile hammer can move up and down along a track on the pier to complete the installation of the steel pipe pile.
[0003] To ensure that the deviation of steel pipe piles during construction meets specifications and design requirements, guide frames are typically used to guide and support the piles. Traditional guide frames are equipped with hydraulic clamps at both the top and bottom. These clamps can be opened or closed to achieve pile positioning during pile driving and separation of the vessel from the pile after driving. For example, Chinese invention patent CN114319356B discloses a construction method and dedicated vessel for offshore wind power monopile foundations, which is equipped with upper and lower clamps. However, when the designed pile spacing of the steel pipe piles is small and the tide level is low, the hydraulic clamps at the bottom of the guide frame may collide with the already driven steel pipe piles, causing deformation of the driven piles and damage to the hydraulic clamps. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of traditional guide frame hydraulic clamps that collide with the already driven steel pipe piles when the net distance between pile positions is small and the water level is at its lowest during offshore piling, and to provide an offshore piling system.
[0005] In a first aspect, this utility model provides an offshore piling system, comprising: A barge, on which a guide frame is installed, the guide frame being equipped with only one hydraulic clamp, the hydraulic clamp being located on the upper part of the guide frame; The guide frame is also equipped with an n-shaped clip, which is located at the lower part of the guide frame. The inner diameter of the n-shaped clip matches the outer diameter of the steel pipe pile to be driven, and the two free ends of the n-shaped clip are connected to the guide frame.
[0006] The marine piling system provided by this utility model has a guide frame with only one hydraulic clamp at the top for stabilizing the upper part of the steel pipe pile to be driven. The lower part of the guide frame is equipped with a smaller n-shaped clamp for stabilizing the lower part of the steel pipe pile to be driven. The bottom of the steel pipe pile to be driven is inserted into the seabed, forming a multi-point constraint with one hydraulic clamp at the top, an n-shaped clamp at the bottom, and the bottom inserted into the seabed, which ensures the stability of the steel pipe pile to be driven. Compared with the large hydraulic clamp, the n-shaped clamp is compact in size and occupies less space. When the pile position is small and the tide level is low, it can effectively prevent the hydraulic clamp at the bottom of the guide frame from colliding with the already driven steel pipe pile, avoiding interference between equipment and thus improving the flexibility of construction.
[0007] The offshore piling system provided by this utility model requires only one hydraulic clamp to be installed on the guide frame, which simplifies the overall structure of the guide frame, reduces the overall weight of the guide frame, and makes it easier to carry out offshore construction; the shape of the n-shaped clamp can be customized according to different pile diameters to ensure good fit and support with the steel pipe pile, thereby enhancing the adaptability of the system.
[0008] Preferably, there are two n-shaped clips, one of which is located at the lower part of the guide frame, and the other of which is located at the lower part of the hydraulic clamp.
[0009] When the water level is at its lowest, the upper hydraulic clamp may interfere with the steel pipe piles that have been driven but whose pile heads have not been cut. Therefore, it is necessary to move the upper hydraulic clamp upwards as much as possible and install two n-shaped clips. One of them is located at the lower part of the guide frame, for example, near the bottom, and the other n-shaped clip is located at the lower part of the hydraulic clamp, for example, near the hydraulic clamp or in the middle of the guide frame. With this structure, the two n-shaped clips provide support points at different heights of the steel pipe pile, which can effectively reduce the shaking and displacement of the pile body during the pile driving process and ensure the stability of the pile body during construction.
[0010] Preferably, the n-shaped card is slidably connected to the guide frame, and the n-shaped card can slide up and down along the guide frame.
[0011] The n-shaped clips can slide up and down along the guide frame, and their position can be flexibly adjusted according to construction needs. This design can accommodate steel pipe piles of different lengths, ensuring that the n-shaped clips can slide to the appropriate position to provide stable support regardless of changes in pile length.
[0012] Preferably, the n-shaped card is a channel steel structural component.
[0013] The preferred N-shaped clamp is made of channel steel. Channel steel is a standardized industrial material, and N-shaped clamps can be quickly fabricated from channel steel available on-site through cutting and welding. The manufacturing process is mature, simple, and cost-effective. Channel steel has high tensile and compressive strength, enabling it to withstand the large stresses transmitted by the steel pipe piles during piling, ensuring the stability of the N-shaped clamp under high loads.
[0014] Preferably, a rear tie rod is also installed between the barge and the guide frame, with one end of the rear tie rod connected to the guide frame and the other end of the rear tie rod connected to the barge.
[0015] By installing a rear tie rod, the guide frame can be prevented from tilting or shifting due to the force of the pile hammer, thus improving the stability of the guide frame.
[0016] Preferably, the barge has a steel plate reinforcement layer welded to its deck, and the guide frame is hinged to the steel plate reinforcement layer.
[0017] The steel plate reinforcement layer significantly improves the load-bearing capacity and deformation resistance of the barge deck, enabling it to withstand the enormous impact and vibration transmitted by the guide frame during piling, effectively preventing cracks or deformations in the deck due to long-term high-load operation, and extending the service life of the barge.
[0018] Preferably, the thickness of the steel plate reinforcement layer is 10mm to 15mm.
[0019] The thickness of the steel plate reinforcement layer is set to a range of 10mm to 15mm, which provides sufficient tensile and compressive strength to effectively withstand the impact and vibration transmitted by the guide frame during piling, prevent deck deformation or cracking, and ensure the structural integrity of the barge.
[0020] Preferably, the barge has a steel plate reinforcement layer welded to its deck, and at least two cantilever beams are fixedly installed on the top surface of the steel plate reinforcement layer, with the guide frame hinged to the cantilever end of the cantilever beams.
[0021] Because the bow of the barge has an irregular arc shape, the cantilever end of the cantilever beam extends the hinge point of the guide frame to the outside of the barge deck, which can better protect the hull. The guide frame is hinged to the cantilever end of the cantilever beam, allowing the guide frame to rotate around the hinge point. After the pile driving is completed, the guide frame can be retracted and the barge can be moved, facilitating the movement of the barge on the construction site.
[0022] Preferably, the cantilever length of the cantilever beam is 85mm ± 5mm.
[0023] After anti-overturning calculations, the cantilever length of the cantilever beam was set at 85mm ± 5mm to ensure that the moment generated by the cantilever beam during pile driving will not cause the barge to capsize. On the one hand, this cantilever length reduces the lever arm, thereby reducing the eccentric impact of the pile driving impact on the barge's center of gravity and maintaining the barge's stability. On the other hand, this cantilever length also takes into account the pile driving requirements in construction scenarios with small pile clearances, avoiding interference between the already driven steel pipe piles and the hydraulic clamps and N-shaped clamps.
[0024] Preferably, stiffening ribs are installed between the cantilever end of the cantilever beam and the barge.
[0025] The stiffening ribs connect the cantilever end of the cantilever beam to the barge, significantly improving the beam's bending and shear resistance, reducing deformation or vibration of the cantilever end under pile driving impact, and further enhancing the overall stability of the system.
[0026] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model provides an offshore piling system, in which the guide frame retains only one hydraulic clamp at the top to stabilize the upper part of the steel pipe pile to be driven, and the lower part of the guide frame is equipped with a smaller n-shaped clamp to stabilize the lower part of the steel pipe pile to be driven. Compared with the large hydraulic clamp, the n-shaped clamp is compact in size and occupies less space. When the net distance between piles is small and the tide level is low, it can effectively prevent the hydraulic clamp at the bottom of the guide frame from colliding with the already driven steel pipe pile, avoid interference between equipment, and thus improve the flexibility of construction. 2. This utility model provides an offshore piling system. The guide frame only needs to be installed with a hydraulic clamp, which simplifies the overall structure of the guide frame, reduces the overall weight of the guide frame, and makes it easier to carry out offshore construction. The shape of the n-shaped clamp can be customized according to different pile diameters to ensure good fit and support with the steel pipe pile, thereby enhancing the adaptability of the system. Attached Figure Description
[0027] Figure 1 A schematic diagram illustrating the positional conflict between the existing guide frame's hydraulic clamps and the already driven steel pipe piles; Figure 2 A schematic diagram of an offshore piling system; Figure 3 This is a diagram showing the state of the hydraulic clamp when it is closed. Figure 4 This is a diagram showing the state of the hydraulic clamp when it is open. Figure 5 This is a schematic diagram of the guide frame.
[0028] Marked in the image: 1-Barge, 2-Guide frame, 21-Hydraulic clamp, 22-N-shaped clamp, 23-Pulley, 3-Rear tie rod, 4-Steel plate reinforcement layer, 5-Cantilever beam, 6-Stiffening rib, 100-Steel pipe pile to be driven, 200-Steel pipe pile already driven. Detailed Implementation
[0029] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.
[0030] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.
[0031] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.
[0032] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.
[0033] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.
[0034] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.
[0035] Example 1 like Figure 1 This illustrates the situation where the hydraulic clamps of the existing guide frame conflict with the position of the driven steel pipe piles, especially when the designed clear distance between the steel pipe piles is small and the tide level is low (e.g., at the lowest tide level). Figure 1 Three hydraulic clamps 21 (or two) are installed on the guide frame 2. The first and second hydraulic clamps 21 from bottom to top will both collide with the driven steel pipe piles 200. For example, the first hydraulic clamp 21 from bottom to top will collide with the pipe wall of the driven steel pipe pile 200, or the second hydraulic clamp 21 from bottom to top will collide with the pile head of the driven steel pipe pile 200 (when the pile has been driven but the pile head has not been cut).
[0036] Therefore, as Figures 2-5 As shown, to overcome the shortcomings of traditional guide frames' hydraulic clamps colliding with already driven steel pipe piles when the clear distance between piles is small and the water level is at its lowest during offshore piling, this embodiment provides an offshore piling system, including: Barge 1, in this embodiment, can be a 2025-ton flatbed barge. A guide frame 2 is installed on barge 1. For example... Figure 2 As shown, the guide frame 2 is equipped with only one hydraulic clamp 21, which is located on the upper part of the guide frame 2.
[0037] In this embodiment, the hydraulic clamp 21 can be a commonly used, openable clamp in industrial production, such as... Figure 3 The state of the hydraulic clamp 21 when it is closed is shown, as follows: Figure 4 The diagram shows the state of the hydraulic clamp 21 when it is open. Furthermore, the hydraulic clamp 21 can also adopt the structural form of the pile driver disclosed in the invention patent with publication number CN112796319B.
[0038] like Figure 2 , Figure 3 As shown, the guide frame 2 is also equipped with an n-shaped clip 22. The specific structure of the n-shaped clip 22 can be referenced from a U-shaped lock. The opening of the n-shaped clip 22 can face the guide frame 2. The n-shaped clip 22 is located at the lower part of the guide frame 2, specifically near the bottom of the guide frame 2. The inner diameter of the n-shaped clip 22 matches the outer diameter of the steel pipe pile 100 to be driven, and the two free ends of the n-shaped clip 22 are connected to the guide frame 2. Furthermore, the n-shaped clip 22 can be a channel steel structural component. Preferably, the n-shaped clip 22 is a channel steel structural component. Channel steel is a standardized industrial material, and the n-shaped clip 22 can be quickly fabricated by cutting and welding channel steel available on the construction site. The manufacturing process is mature, the processing is simple, and the cost is low. Channel steel has high tensile and compressive strength, which can withstand the large stress transmitted by the steel pipe pile during the piling process, ensuring the stability of the n-shaped clip 22 under high loads.
[0039] Furthermore, in this embodiment or other embodiments, the number of n-shaped cards 22 is two, such as... Figure 2 As shown, one n-shaped clamp 22 is located at the lower part of the guide frame 2, and the other n-shaped clamp 22 is located at the lower part of the hydraulic clamp 21 (or it can be located in the middle of the guide frame 2). When the water level is at its lowest, the upper hydraulic clamp 21 may also interfere with the steel pipe piles that have been driven but whose pile heads have not been cut. Therefore, it is necessary to move the upper hydraulic clamp 21 upwards as much as possible and set two n-shaped clamps 22, one at the lower part of the guide frame 2, for example, near the bottom, and the other n-shaped clamp 22 at the lower part of the hydraulic clamp 21, for example, near the hydraulic clamp 21 or in the middle of the guide frame 2. With this structural arrangement, the two n-shaped clamps 22 provide support points at different heights of the steel pipe pile, which can effectively reduce the shaking and displacement of the pile body during the pile driving process and ensure the stability of the pile body during construction.
[0040] Furthermore, in this embodiment or other embodiments, the n-shaped card 22 is slidably connected to the guide frame 2, and the n-shaped card 22 can slide up and down along the guide frame 2. Specifically, for example... Figure 2 As shown, the two free ends of the n-shaped clip 22 can be slidably connected to both sides of the guide frame 2 via pulleys 23. A locking device, such as a pin, can be installed on the pulley system. When the n-shaped clip 22 moves to the appropriate position, locking the pulleys 23 restricts its movement. The n-shaped clip 22 can slide up and down along the guide frame 2, allowing its position to be flexibly adjusted according to construction needs. This design can adapt to steel pipe piles of different lengths, ensuring that regardless of changes in pile length, the n-shaped clip 22 can slide to the appropriate position to provide stable support.
[0041] Furthermore, in this embodiment or other embodiments, a rear tie rod 3 is also installed between the barge 1 and the guide frame 2. One end of the rear tie rod 3 is connected to the guide frame 2 (e.g., hinged), and the other end of the rear tie rod 3 is connected to the barge 1 (e.g., hinged). Specifically, the rear tie rod 3 can be a hydraulic rod. By setting the rear tie rod 3, the guide frame 2 can be prevented from tilting or shifting due to the force of the pile hammer, thereby improving the stability of the guide frame 2.
[0042] Furthermore, in other embodiments, a steel plate reinforcement layer 4 is welded onto the deck of barge 1, and a guide frame 2 is hinged to the steel plate reinforcement layer 4. The thickness of the steel plate reinforcement layer 4 is 10mm~15mm, preferably 10mm. The steel plate reinforcement layer 4 significantly improves the load-bearing capacity and deformation resistance of the deck of barge 1, and can withstand the huge impact force and vibration transmitted by the guide frame 2 (2) during piling, effectively preventing the deck from cracking or deforming due to long-term high-load operation, and extending the service life of barge 1. Setting the thickness of the steel plate reinforcement layer 4 to the range of 10mm~15mm provides sufficient tensile and compressive strength for the steel plate reinforcement layer 4, which can effectively withstand the impact force and vibration transmitted by the guide frame 2 during piling, prevent deck deformation or cracking, and ensure the structural integrity of barge 1.
[0043] Furthermore, such as Figure 2 As shown, in this embodiment or other embodiments, a steel plate reinforcement layer 4 is welded to the deck of barge 1. At least two cantilever beams 5 are fixedly installed on the top surface of the steel plate reinforcement layer 4. A guide frame 2 is hinged to the cantilever end of the cantilever beam 5. The cantilever length of the cantilever beam 5 is 85mm ± 5mm, preferably 85mm. Since the bow front edge of barge 1 is an irregular arc shape, the cantilever end of the cantilever beam 5 extends the hinge point of the guide frame 2 to the outside of the deck of barge 1, which can better protect the hull. The guide frame 2 is hinged to the cantilever end of the cantilever beam 5, allowing the guide frame 2 to rotate around the hinge point. After the pile driving is completed, the guide frame 2 can be retracted and the barge 1 can be moved, facilitating the movement of the barge 1 at the construction site. After anti-overturning calculation, the cantilever length of the cantilever beam 5 is set to 85mm ± 5mm to ensure that the moment generated by the cantilever beam 5 during pile driving will not cause the barge 1 to overturn. On the one hand, the cantilever length reduces the lever arm, thereby reducing the eccentric impact of the pile driving impact on the center of gravity of the barge 1 and maintaining the stability of the barge 1. On the other hand, the cantilever length takes into account the pile driving requirements in construction scenarios with small pile spacing, and avoids interference between the already driven steel pipe piles 200 and the hydraulic clamps 21 and n-shaped clamps 22.
[0044] Furthermore, in this embodiment or other embodiments, stiffening ribs 6 are installed between the cantilever end of the cantilever beam 5 and the barge 1. The specific form of the stiffening ribs 6 is not limited, and can be as follows: Figure 2 The structure shown is a triangular plate. The stiffening rib 6 connects the cantilever end of the cantilever beam 5 to the barge 1, which significantly improves the bending and shear resistance of the cantilever beam 5, reduces the deformation or vibration of the cantilever end under the impact of pile driving, and further enhances the overall stability of the system.
[0045] The offshore piling system provided in this embodiment has a guide frame 2 with only one hydraulic clamp 21 at the top for stabilizing the upper part of the steel pipe pile 100 to be driven. The lower part of the guide frame 2 is equipped with a smaller n-shaped clamp 22 for stabilizing the lower part of the steel pipe pile 100. The bottom of the steel pipe pile 100 is inserted into the seabed, forming a multi-point constraint with an upper hydraulic clamp 21, a lower n-shaped clamp 22, and the bottom inserted into the seabed, ensuring the stability of the piling process. Figure 2 As shown, compared with the large hydraulic clamp 21, the n-shaped clamp 22 is compact in size and occupies less space. When the net distance between piles is small and the tide level is low, it can effectively prevent the hydraulic clamp 21 at the bottom of the guide frame 2 from colliding with the already driven steel pipe pile 200, thus avoiding interference between equipment and improving the flexibility of construction.
[0046] The offshore piling system provided in this embodiment requires only one hydraulic clamp 21 to be installed on the guide frame 2, which simplifies the overall structure of the guide frame 2, reduces its overall weight, and facilitates offshore construction. The shape of the n-shaped clamp 22 can be customized according to different pile diameters to ensure good fit and support with the steel pipe pile, thereby enhancing the system's adaptability.
[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 marine piling system, characterized in that, include: A barge (1) is equipped with a guide frame (2), and the guide frame (2) is equipped with only one hydraulic clamp (21), which is located on the upper part of the guide frame (2). The guide frame (2) is also equipped with an n-shaped clip (22), which is located at the lower part of the guide frame (2). The inner diameter of the n-shaped clip (22) matches the outer diameter of the steel pipe pile (100) to be driven. The two free ends of the n-shaped clip (22) are connected to the guide frame (2).
2. The offshore piling system according to claim 1, characterized in that, There are two n-shaped clips (22), one of which is located at the lower part of the guide frame (2) and the other is located at the lower part of the hydraulic clamp (21).
3. The offshore piling system according to claim 1, characterized in that, The n-shaped card (22) is slidably connected to the guide frame (2), and the n-shaped card (22) can slide up and down along the guide frame (2).
4. The offshore piling system according to claim 1, characterized in that, The n-shaped card (22) is a channel steel structural component.
5. The offshore piling system according to claim 1, characterized in that, A rear tie rod (3) is also installed between the barge (1) and the guide frame (2). One end of the rear tie rod (3) is connected to the guide frame (2), and the other end of the rear tie rod (3) is connected to the barge (1).
6. The offshore piling system according to claim 1, characterized in that, The deck of the barge (1) is reinforced with a steel plate (4), and the guide frame (2) is hinged to the steel plate reinforcement layer (4).
7. A marine piling system according to claim 6, characterized in that, The thickness of the steel plate reinforcement layer (4) is 10mm~15mm.
8. The offshore piling system according to claim 1, characterized in that, The deck of the barge (1) is reinforced with a steel plate (4) welded together. At least two cantilever beams (5) are fixedly installed on the top surface of the steel plate reinforcement layer (4). The guide frame (2) is hinged to the cantilever end of the cantilever beam (5).
9. A marine piling system according to claim 8, characterized in that, The cantilever length of the cantilever beam (5) is 85mm ± 5mm.
10. A marine piling system according to claim 9, characterized in that, A stiffening rib (6) is installed between the cantilever end of the cantilever beam (5) and the barge (1).