Method for transforming single-pile type pile stabilizing platform into four-pile guide pipe frame type pile stabilizing platform

Abstract

The invention discloses a method for transforming a single-pile type pile stabilizing platform into a four-pile guide pipe frame type pile stabilizing platform. The method comprises the following steps that firstly, an existing single-pile type pile stabilizing platform is cut; secondly, a top construction platform of the four-pile guide pipe frame type pile stabilizing platform is manufactured, and four limiting cylinders are manufactured; 3, hoisting and installing the top construction platform; (4); four limiting cylinders are hoisted and installed; and fifthly, flaw detection is conducted on all welding parts. The four-pile guide pipe frame type pile stabilizing platform has the beneficial effects that a single-pile type pile stabilizing platform is transformed into the four-pile guide pipe frame type pile stabilizing platform, so that the manufacturing complexity of a product structure is remarkably reduced, and meanwhile, the operation risk in the whole assembling process is reduced, and the working time of operators is shortened. By applying the technology, the production period of the pile stabilizing platform is effectively shortened, and the construction efficiency is improved. According to the method, the construction cost and the construction period of a four-pile guide pipe frame type pile stabilizing platform product are reduced, and the recycling efficiency of idle resources is improved.

Description

Technical Field

[0001] This invention belongs to the field of offshore wind power generation technology, specifically relating to a method for converting a monopile stabilization platform into a four-pile jacket stabilization platform. Background Technology

[0002] Against the backdrop of the accelerated transformation of the global energy structure and the commitment of countries to achieving green and low-carbon development goals, offshore wind power has become an important pillar of the clean energy sector due to its abundant resources, high power generation efficiency, and significant advantages of not occupying valuable land resources, and is experiencing an unprecedented golden age of development.

[0003] Driven by both strong domestic and international policy support and continuous technological breakthroughs, the offshore wind power industry has experienced rapid growth. In recent years, China's offshore wind power industry has developed into a globally leading clean energy industry, achieving leapfrog development through multiple driving forces including policy support, technological innovation, and large-scale development. According to official data, as of the end of April 2025, my country's cumulative installed wind power capacity reached 541.19 million kilowatts, a year-on-year increase of 18.2%. Among them, the cumulative installed capacity of offshore wind power reached 43.51 million kilowatts, accounting for 8.04% of the total cumulative installed wind power capacity. my country has ranked first globally in both newly installed and cumulative offshore wind power capacity for four consecutive years, accounting for nearly half of the global cumulative installed offshore wind power capacity, fully demonstrating my country's sense of responsibility as a major power.

[0004] 2025 will undoubtedly be a pivotal year for the development of offshore wind power in China. The offshore wind power industry is poised to embark on a new stage of higher-quality and more sustainable development.

[0005] Earlier monopile stabilization platforms were unable to meet the needs of deeper water areas and are gradually being phased out, replaced by the widely used four-pile jacket stabilization platforms. However, simply dismantling and rebuilding them is costly and time-consuming. Summary of the Invention

[0006] The purpose of this invention is to provide a method for converting a single-pile stabilizing platform into a four-pile guide frame stabilizing platform, thereby solving the problems of high demolition and reconstruction costs and long construction periods in the prior art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a method for converting a single-pile stabilizing platform into a four-pile guide frame stabilizing platform, comprising the following steps:

[0008] Step 1: Cut off the top of the existing monopile stabilizing platform to form the main structure of the four-pile jacket stabilizing platform, and grind the cut position on the top of the monopile stabilizing platform. After grinding, check the dimensions of the top of the monopile stabilizing platform.

[0009] Step 2: Construct the main frame of the top construction platform of the four-pile guide frame type pile stabilization platform. The middle of the top construction platform is equipped with a connection part corresponding to the four main legs of the original single-pile pile stabilization platform, and the four sides of the top construction platform are equipped with guide tubes.

[0010] Step 3: Weld four limiting cylinder bodies, and install a connector on the side of each cylinder body to connect with the original single pile stabilization platform;

[0011] Step 4: Insert connecting saddles into the top of the four main legs of the original single-pile stabilizing platform, hoist the top construction platform above it, and weld the connecting part of the top construction platform to the connecting saddles.

[0012] Step 5: Hoist the limiting cylinders to the side of the original monopile stabilization platform, and weld them to the middle of the original monopile stabilization platform through connectors, and make the central axis of each limiting cylinder coincide with the central axis of the corresponding guide cylinder;

[0013] Step Six: Perform flaw detection on all welded areas;

[0014] Step 7: Grind the welded areas and apply paint.

[0015] Preferably, in step two, protective railings and lifting lugs for hoisting are welded around the top construction platform, and the surface is painted after welding is completed.

[0016] Preferably, in step three, lifting lugs for hoisting are welded onto the limiting cylinder connecting piece, and after welding, the surface is painted.

[0017] Preferably, in step four, the dimensions of the guide cylinder and the connecting part are measured and checked before welding.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] By transforming monopile stabilization platforms into four-pile jacket-type stabilization platforms, the manufacturing complexity of the product structure is significantly reduced, while operational risks and operator workload during overall assembly are also lowered. This technology effectively shortens the production cycle of the stabilization platform, improving construction efficiency and significantly enhancing structural accuracy, ensuring the platform meets design specifications. Furthermore, this technology provides solid technical support for the rapid and efficient completion of wind power piling construction and opens up new avenues for the sustainable development of wind power products. This method reduces the construction cost and timeframe of four-pile jacket-type stabilization platforms and improves the efficiency of reusing idle resources. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the single-pile stabilizing platform in this invention;

[0021] Figure 2 This is a schematic diagram of the structure of the monopile stabilizing platform of the present invention after cutting.

[0022] Figure 3 This is a schematic diagram of the top-level construction platform structure in this invention;

[0023] Figure 4 This is a schematic diagram showing the installation position of the limiting cylinder in this invention;

[0024] Figure 5 This is a schematic diagram of the modified structure of the present invention; Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] The invention discloses a method for modifying a single-pile stabilizing platform into a four-pile guide frame stabilizing platform, the specific process of which is as follows:

[0027] Please see Figures 1-2 The existing monopile stabilization platform was modified by first removing the upper support structure to form the main structure of a four-pile jacket-type stabilization platform. During the removal of the support structure, it was crucial to ensure no damage was caused to the lower main structure. After removal, the removed sections of the main structure were finely ground, and the dimensions of the main structure were precisely checked to ensure smooth assembly later. After grinding, all structural components were transported to a sandblasting and painting booth for surface coating.

[0028] Please see Figure 3 To construct the top-level construction platform for a four-pile jacket-type pile stabilization platform, the main frame of the platform is first erected. Then, the railings and other auxiliary components are assembled. The middle of the top-level construction platform has a connection point corresponding to the four main legs of the original single-pile stabilization platform, and guide tubes are installed on all four sides. Four lifting lugs are installed on the top-level construction platform; their placement should correspond to the four main legs of the single-pile stabilization platform, and the opening dimensions should be consistent.

[0029] Please see Figure 4 Four limiting cylinder bodies are fabricated. First, a roller frame is used to weld the limiting cylinder bodies. Then, the connectors for the four limiting cylinders are installed to construct the complete limiting cylinder structure. The connectors are horizontal diagonal braces. Auxiliary lifting lugs are installed on the horizontal diagonal braces of the limiting cylinders, and the auxiliary lifting lugs should be located at the connection point between the horizontal diagonal brace and the vertical brace of the limiting cylinders.

[0030] Check the opening dimensions of the guide tube and connecting parts of the construction platform, check the outer dimensions of the limiting tube, check for any missing auxiliary components, and after the top construction platform and limiting tube are welded, grind the welds and sharp corners, and then carry out painting operations.

[0031] At the same time, four saddles were manufactured to support the top-level construction platform. The saddles are placement platforms inserted into the four main legs of the original monopile stabilizing platform.

[0032] Please see Figure 5 After the construction platform is hoisted above the main structure, the opening dimensions of the guide tube and the connecting part are precisely checked. After confirming that there are no errors, welding operations are carried out, and inspection personnel are notified to conduct flaw detection.

[0033] The completed limiting cylinder is hoisted to the designated installation position. The installation dimensions of the limiting cylinder are checked to ensure that they are completely consistent with the dimensions of the guide cylinder of the construction platform. After confirming that there are no errors, welding operations are carried out, and the inspection personnel are notified to conduct flaw detection.

[0034] After the main structure of the four-pile guide frame type pile stabilization platform, the top construction platform and the four limiting cylinders are assembled, painting and repair work is carried out.

[0035] After the closure operation is completed, the overall dimensions of the stabilizing platform need to be accurately measured, and the installation status of the remaining auxiliary components needs to be fully checked.

[0036] Although embodiments of the invention have been shown and described in detail above, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for converting a single-pile stabilizing platform into a four-pile guide frame stabilizing platform, characterized in that, Includes the following steps: Step 1: Cut off the top of the existing monopile stabilizing platform to form the main structure of the four-pile jacket stabilizing platform, and grind the cut position on the top of the monopile stabilizing platform. After grinding, check the dimensions of the top of the monopile stabilizing platform. Step 2: Construct the main frame of the top construction platform of the four-pile guide frame type pile stabilization platform. The middle of the top construction platform is equipped with a connection part corresponding to the four main legs of the original single-pile pile stabilization platform, and the four sides of the top construction platform are equipped with guide tubes. Step 3: Weld four limiting cylinder bodies, and install a connector on the side of each cylinder body to connect with the original single pile stabilization platform; Step 4: Insert connecting saddles into the top of the four main legs of the original single-pile stabilizing platform, hoist the top construction platform above it, and weld the connecting part of the top construction platform to the connecting saddles. Step 5: Hoist the limiting cylinders to the side of the original monopile stabilization platform, and weld them to the middle of the original monopile stabilization platform through connectors, and make the central axis of each limiting cylinder coincide with the central axis of the corresponding guide cylinder; Step Six: Perform flaw detection on all welded areas; Step 7: Grind the welded areas and apply paint.

2. The method for converting a single-pile stabilizing platform into a four-pile guide frame stabilizing platform according to claim 1, characterized in that: In step two, protective railings and lifting lugs for hoisting are welded around the top construction platform. After welding, the surface is painted.

3. The method for converting a single-pile stabilizing platform into a four-pile guide frame stabilizing platform according to claim 1, characterized in that: In step three, lifting lugs for hoisting are welded onto the limiting cylinder connecting parts. After welding, the surface is painted.

4. The method for converting a single-pile stabilizing platform into a four-pile guide frame stabilizing platform according to claim 1, characterized in that: In step four, the dimensions of the guide cylinder and the connecting part are measured and checked before welding.

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