A multi-purpose underwater suction bucket foundation pile stabilizing platform

Abstract

The application discloses a pile stabilizing platform based on underwater suction bucket foundation, which comprises a platform frame, a plurality of pile sinking guide cylinders and a plurality of suction buckets. The platform frame is a regular polygon in plane and comprises an outer frame and an inner frame; the heads of the plurality of pile sinking guide cylinders are connected to the plurality of corner portions of the platform frame one by one; and the plurality of suction buckets are coaxially sleeved outside the cylinder bodies of the plurality of pile sinking guide cylinders one by one. The application can shorten offshore operation time, save steel consumption, realize low-noise and non-impact installation process, greatly reduce interference to marine organisms, and has the characteristics of being reusable.

Description

Technical Field

[0001] This invention relates to a multi-purpose underwater suction bucket foundation stabilization platform. Background Technology

[0002] With the accelerated global energy transition, offshore wind power, as a core pillar of clean energy, is rapidly developing towards deeper water and larger scale. Monopiles and jacket foundations are the most mainstream foundation forms for offshore wind power, and the accuracy of their pile driving construction directly determines the stability of the wind turbine structure and the safety during operation. In particular, large-diameter monopile foundations have stringent requirements for verticality error (typically controlled within 3‰). Traditional pile stabilization platforms used for pile driving construction rely heavily on auxiliary piles for positioning, which suffers from long construction cycles, significant interference with the marine environment, and poor adaptability to complex mud surfaces, making it difficult to meet the construction needs of deep water and complex sea areas. As water depth increases, the height of jacket foundations will also exceed the existing lifting height limitations of crane vessels. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of existing systems and provide a multi-purpose underwater suction bucket foundation stabilization platform. It can shorten the time of offshore operations, save steel consumption, and the installation process is low-noise and impact-free, greatly reducing interference with marine life. It is also reusable.

[0004] The technical solution to achieve the above objectives is: a pile-stabilizing platform based on an underwater suction bucket foundation, comprising a platform frame, several pile-driving guide cylinders, and several suction buckets; wherein, The platform frame has a regular polygonal plane and includes an outer frame and an inner frame; The heads of several pile driving guide tubes are connected one-to-one to several corners of the platform frame; Several suction buckets are coaxially mounted on the outside of several pile driving guide cylinders.

[0005] The aforementioned stabilizing platform based on an underwater suction bucket foundation includes an outer frame comprising several outer trusses; each outer truss comprises an upper and lower horizontal bar connected between two adjacent pile driving guide tubes, a vertical bar connected between the middle of the upper and lower horizontal bars, and two diagonal braces in an inverted V shape connected between the top of the vertical bar and the two adjacent pile driving guide tubes; the inner frame comprises several inner trusses connected between the middle parts of the several outer trusses; each inner truss comprises an upper horizontal bar and a lower horizontal bar.

[0006] The aforementioned stabilizing platform based on an underwater suction bucket foundation includes a pump skid mounting platform fixed to the inner frame.

[0007] In the aforementioned stabilizing platform based on an underwater suction bucket foundation, several inner ribs are evenly distributed around the outer wall of each pile guide cylinder and the inner wall of the corresponding suction bucket, and water passage holes are opened on each inner rib.

[0008] The aforementioned stabilizing platform based on an underwater suction bucket foundation includes an upper inner rib plate and a lower inner rib plate; upper circumferential stiffening plates are fixed between adjacent upper inner rib plates; and lower circumferential stiffening plates are fixed between adjacent lower inner rib plates.

[0009] In the aforementioned stabilizing platform based on an underwater suction bucket foundation, several outer ribs are evenly distributed around the head of the pile driving guide cylinder and the top surface of the corresponding suction bucket, and outer circumferential stiffening plates are fixed between adjacent outer ribs.

[0010] The aforementioned pile stabilization platform based on an underwater suction bucket foundation includes a guide bell-shaped opening at the top of the pile driving guide cylinder.

[0011] The multi-purpose underwater suction bucket foundation stabilization platform of the present invention has the following characteristics: 1) Based on the principle of negative pressure sinking, auxiliary pile positioning is achieved, which combines high construction efficiency, environmental friendliness and controllable accuracy.

[0012] 2) The multi-pile guiding mechanism achieves clamping, multi-stage guidance, and verticality control of steel pipe piles through upper, middle, and lower components. These components are located in the middle of the platform's main frame, ensuring structural stability and reliable connection strength. The outer ring beam of the middle component is a box girder structure, while the inner ring beam consists of three fan-shaped ring members. Three pairs of centering cylinders are installed between the inner and outer ring beams to adjust the contraction of the inner ring beam when gripping the pile. The three fan-shaped ring members are connected by a bevel and hydraulic pins for docking and unlocking. Both the upper and lower components use fixed guide sleeves; the guide sleeve of the upper component has a larger diameter, allowing for the use of a hydraulic pile hammer.

[0013] 3) It can shorten the offshore operation time, save steel consumption, and the installation process is low-noise and impact-free, greatly reducing the interference with marine life. At the same time, it has the characteristic of being reusable, which is in line with the development trend of green, low-carbon, cost-reduction and efficiency-increasing offshore wind power. It can effectively break through the bottleneck of pile stabilization construction under deep water complex mud surface conditions. Attached Figure Description

[0014] Figure 1 This is a perspective view of the stabilizing platform based on an underwater suction bucket foundation of the present invention; Figure 2 This is a front view of the pile stabilization platform based on an underwater suction bucket foundation of the present invention; Figure 3 This is a plan view of the stabilizing platform based on an underwater suction bucket foundation of the present invention; Figure 4 This is an elevation sectional view of the pile stabilization platform based on an underwater suction bucket foundation of the present invention. Detailed Implementation

[0015] The technical solutions in the embodiments of the present invention will now be clearly and completely described in conjunction with the accompanying drawings.

[0016] Please see Figures 1 to 4 The present invention relates to a pile stabilization platform based on an underwater suction bucket foundation, comprising a platform frame 1, four pile driving guide cylinders 2 and four suction buckets 3.

[0017] Platform frame 1 has a rectangular plan and includes an outer frame 1A, an inner frame 1B, and a pump skid mounting platform 1C; wherein, The outer frame 1A includes four outer trusses; each outer truss is made of steel pipe and includes an upper and lower crossbar connected between two adjacent pile driving guide tubes, a vertical bar connected between the middle of the upper and lower crossbars, and two diagonal braces connected in an inverted V shape between the top of the vertical bar and the two adjacent pile driving guide tubes. The inner frame 1B includes four inner trusses connected between the middle parts of the four outer trusses; each inner truss is made of steel pipe and includes an upper horizontal bar and a lower horizontal bar; The pump skid mounting platform 1C is fixed at the junction of any two adjacent inner trusses on the inner frame 1C.

[0018] The heads of the four pile driving guide cylinders 2 are connected to several corners of the platform frame 1 in a corresponding manner; each pile driving guide cylinder 2 is provided with a guide horn 20 at the top for guiding the pile foundation and controlling the verticality of the pile foundation.

[0019] The suction bucket 3 is a barrel-shaped structure with an open bottom and a small opening at the top. The four suction buckets 3 are coaxially fitted onto the outside of the four pile driving guide cylinders 2 in a one-to-one correspondence.

[0020] Four inner ribs are evenly distributed around the inner wall of each suction tank 3 and the outer wall of the corresponding pile driving guide cylinder 2. The inner ribs include an upper inner rib 31 and a lower inner rib 32. An upper circumferential stiffener 310 is fixed between adjacent upper inner ribs 31, and a lower circumferential stiffener 320 is fixed between adjacent lower inner ribs 32. Water passage holes 30 are provided on each upper inner rib 31 and each lower inner rib 32 to prevent water flow interruption from affecting the sinking of the platform.

[0021] Eight outer ribs 33 are evenly fixed circumferentially between the top surface of each suction bucket 3 and the head of the corresponding pile driving guide cylinder 2, and outer circumferential stiffeners 330 are fixed between adjacent outer ribs 33.

[0022] The present invention relates to a pile stabilization platform based on an underwater suction bucket foundation. Four pile driving guide cylinders, coaxially arranged in a one-to-one correspondence between the four suction buckets, are used to guide and control the verticality of the steel pipe piles. The four suction buckets enable the platform to drive through the piles and bear the load of the pile driving guide cylinders. The platform frame 1 has a low height, which meets the requirement of a single hammer blow to the pile foundation, eliminating the need for an opening and closing structure to pass through the pile driving hammer.

[0023] The underwater suction bucket foundation-based stabilizing platform of the present invention includes the following steps during use: S1. The stabilizing platform of the present invention relies on the pump skid installed on the pump skid mounting platform 1C to position the four suction tanks 3 on the water by "self-weight sinking + negative pressure penetration"; S2. Before driving the pile, insert the steel pipe pile into the pile driving guide tube 2 to complete the guiding and positioning. S3. During pile driving, the hydraulic hammer can drive the steel pipe pile to the design elevation in one go; combined with the data feedback from the pressure sensor, level and underwater camera, a closed-loop control system is formed to dynamically correct the pile body deviation during pile driving and ensure that the verticality of the steel pipe pile meets the standard. S4. After the pile driving is completed, the pile stabilization platform of the present invention is lifted and retracted.

[0024] This invention relates to a pile stabilization platform based on an underwater suction tank foundation. Utilizing the negative pressure sinking principle of the suction tank, it achieves auxiliary pile positioning, combining high construction efficiency, environmental friendliness, and controllable precision. The pile foundation is guided and positioned through the suction tank via a pile driving guide tube, enabling one-hammer-down construction and significantly improving construction efficiency. The integrated design of the pile driving guide tube and suction tank allows force to be transferred to the suction tank and seabed soil during pile driving, eliminating the need for various control systems and hydraulic mechanisms, significantly reducing risk points, and ensuring high reliability.

[0025] This invention relates to a stabilizing platform based on an underwater suction bucket foundation. It departs from the traditional stabilizing platform model, which relies on guide tubes and jacket structures for stress distribution, resulting in a significant improvement in structural strength. Compared to traditional stabilizing platforms, it shortens offshore operation time, saves steel consumption, and features low-noise, shock-free installation, greatly reducing disturbance to marine life. Furthermore, it is reusable, aligning with the green, low-carbon, cost-effective development trend of offshore wind power. It effectively overcomes the bottleneck of stabilizing pile foundation construction under complex deep-water muddy conditions. This stabilizing platform provides a novel structure and construction solution for deep-sea offshore wind power operations and can be widely applied to offshore wind turbine foundation construction under various complex sea conditions.

[0026] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pile-stabilizing platform based on an underwater suction bucket foundation, comprising a platform frame, several pile-driving guide cylinders, and several suction buckets; characterized in that, The platform frame has a regular polygonal plane and includes an outer frame and an inner frame; The heads of several pile driving guide tubes are connected one-to-one to several corners of the platform frame; Several suction barrels are coaxially mounted on the outside of several pile driving guide cylinders.

2. The stabilizing platform based on an underwater suction bucket foundation according to claim 1, characterized in that, The outer frame includes several outer trusses; each outer truss includes an upper and lower horizontal bar connected between two adjacent pile guide tubes, a vertical bar connected between the middle of the upper and lower horizontal bars, and two diagonal braces connected in an inverted V shape between the top of the vertical bar and the two adjacent pile guide tubes; the inner frame includes several inner trusses connected between the middle parts of the several outer trusses; each inner truss includes an upper horizontal bar and a lower horizontal bar.

3. The stabilizing platform based on an underwater suction bucket foundation according to claim 1 or 2, characterized in that, The platform frame also includes a pump skid mounting platform fixed to the inner frame.

4. The stabilizing platform based on an underwater suction bucket foundation according to claim 1, characterized in that, Several inner ribs are evenly distributed around the outer wall of each pile driving guide cylinder and the inner wall of the corresponding suction cylinder, with water passage holes opened on each inner rib.

5. The stabilizing platform based on an underwater suction bucket foundation according to claim 4, characterized in that, The inner rib plate includes an upper inner rib plate and a lower inner rib plate; upper circumferential stiffeners are fixed between adjacent upper inner rib plates; lower circumferential stiffeners are fixed between adjacent lower inner rib plates.

6. The stabilizing platform based on an underwater suction bucket foundation according to claim 1, characterized in that, Several outer ribs are evenly distributed around the head of the pile driving guide cylinder and the top surface of the corresponding suction cylinder, and outer circumferential stiffeners are fixed between adjacent outer ribs.

7. The stabilizing platform based on an underwater suction bucket foundation according to any one of claims 1, 4, and 6, characterized in that, The top of the pile driving guide tube is provided with a guide bell mouth.

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