A rotating construction platform based on a single pile foundation

Abstract

The present invention relates to a rotating construction platform based on a single pile foundation, comprising a slewing connection mechanism arranged on the top of the single pile foundation, and a working platform arranged on the slewing connection mechanism, wherein the slewing connection mechanism comprises an upper connecting cylinder, a lower connecting cylinder, and a slewing support structure located between the upper connecting cylinder and the lower connecting cylinder, wherein the working platform is fixedly connected to the upper connecting cylinder, and the lower connecting cylinder is detachably fixed to the top of the single pile foundation, and at least one side of the working platform extends out from the side of the single pile foundation. The rotating construction platform of the present invention is stable and reliable, and can replace the original method of using offshore construction vessels or temporary construction platforms, thereby improving the continuity of construction operations, saving construction time and costs, and preventing the ship engine from being shaken by waves and hitting the single pile foundation when the construction space is small, thereby improving construction positioning accuracy and ensuring construction quality.

Description

Technical Field

[0001] The invention relates to an above-water construction platform, in particular to a rotary construction platform based on a single pile foundation. Background Art

[0002] During the construction, equipment installation, and maintenance of offshore structures, work often needs to be carried out around monopile foundations. Currently, there are two common methods for offshore construction: using conventional temporary multi-pile platforms and offshore construction vessels. Using conventional temporary multi-pile platforms, there are two common approaches. One is to build a smaller temporary platform near the monopile foundation, supported by multiple small-diameter steel pipe piles. This approach requires constant pile driving and removal, as well as disassembly and assembly, to adjust the temporary platform's position around the monopile foundation to meet construction needs. The other approach involves using a very large temporary platform with a central hole to enclose the entire monopile foundation. This approach is excessively large and technically and economically unsuitable. Using offshore construction vessels can involve specialized offshore construction vessels (such as DCM mixing vessels) or vessel-mounted construction equipment, where land-based engineering machinery is mounted on a barge or jack-up platform. Specialized offshore construction vessels offer high efficiency, but are generally larger, require tight construction schedules, and are expensive. Modifying the vessel generally requires the appropriate configuration and securing of the relevant equipment. With the exception of jack-up platforms, other vessels require constant anchoring and repositioning during offshore construction. This requires overcoming environmental factors such as currents, wave loads, and winds, making construction quality difficult to control. Jack-up platforms require inserting and removing pile legs and adjusting their positions, resulting in low efficiency and a technically and economically unsuitable solution. Therefore, a new type of construction platform is needed to reduce construction complexity, save time, and reduce costs. Summary of the Invention

[0003] In view of the above-mentioned shortcomings of the existing technology, the technical problem to be solved by the present invention is to provide a rotating construction platform based on a single pile foundation, and propose a new design method to set the construction platform directly on the single pile foundation, thereby saving construction time and costs, improving the continuity of construction operations, and ensuring construction quality.

[0004] To achieve the above-mentioned objectives, the present invention provides a rotating construction platform based on a single pile foundation, comprising a slewing connection mechanism arranged on the top of the single pile foundation, and a working platform arranged on the slewing connection mechanism, the slewing connection mechanism comprising an upper connecting cylinder, a lower connecting cylinder, and a slewing support structure located between the upper connecting cylinder and the lower connecting cylinder, the working platform is fixedly connected to the upper connecting cylinder, the lower connecting cylinder is detachably fixed to the top of the single pile foundation, and at least one side of the working platform extends out from the side of the single pile foundation.

[0005] Furthermore, the rotary connection mechanism also includes a corbel fixedly connected to the upper connecting cylinder, and the working platform is fixedly connected to the corbel.

[0006] Furthermore, a cross brace is fixedly connected between the corbel and the upper connecting tube.

[0007] Furthermore, the load-bearing system of the working platform includes a platform chassis, the platform chassis is fixedly connected to a short column, and the short column is fixedly connected to the bracket of the rotary connection mechanism.

[0008] Furthermore, the platform base frame is rectangular, and one or both sides along the length direction extend out of the single pile foundation. The platform base frame includes a main beam arranged along the length direction, a secondary beam arranged along the width direction, and a panel or grille installed on the main beam and the secondary beam, and the short column is fixedly connected to the main beam.

[0009] Furthermore, the load-bearing system of the working platform also includes a vertical reinforcement structure fixedly connected to the platform chassis.

[0010] Furthermore, the load-bearing system composed of the platform base frame and the vertical reinforcement structure is a frame structure, a truss structure, a self-stressed arch structure or a cable-stayed structure.

[0011] Furthermore, the slewing connection mechanism also includes a slewing control system for controlling the rotation of the slewing support structure.

[0012] Furthermore, a docking and boarding structure is provided on the side of the working platform.

[0013] Furthermore, the working platform includes guardrails and wheel sills arranged on the platform chassis.

[0014] As described above, the rotary construction platform of the present invention has the following beneficial effects:

[0015] By installing a swivel connection mechanism at the top of the single pile foundation and a working platform on the swivel connection mechanism, a new design method is adopted to install the rotating construction platform on the single pile foundation. That is, the single pile foundation is used as the structural support, and an additional pile foundation is no longer required. Moreover, by providing a swivel connection mechanism with a rotation function, the working platform is driven to rotate. Under the condition of achieving the same construction scope, the overall size of the working platform can be effectively reduced, bringing convenience to construction. The rotating construction platform of the present invention is stable and reliable, and can replace the original method of using offshore construction vessels or temporary construction platforms. It can reduce the adverse effects of the marine environment such as tides, waves and currents, improve the continuity of construction operations, save construction time and costs, and prevent the ship engine from being shaken by waves and hitting the single pile foundation when the construction space is small. It improves the construction positioning accuracy and ensures the construction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of Example 1 of the rotary construction platform of the present invention.

[0017] Figure 2 for Figure 1 Top view of .

[0018] Figure 3 It is a top view of the rotary connection mechanism in the first embodiment of the present invention.

[0019] Figure 4 This is a structural diagram of the platform chassis of the working platform in Example 1 of the present invention.

[0020] Figure 5 This is a front view of the working platform in Example 1 of the present invention.

[0021] Figure 6 This is a structural diagram of the working platform in Example 2 of the rotary construction platform of the present invention.

[0022] Figure 7 This is a structural diagram of the working platform in Example 3 of the rotary construction platform of the present invention.

[0023] Figure 8 This is a structural diagram of the working platform in Example 4 of the rotary construction platform of the present invention.

[0024] Figure 9 This is a structural diagram of the working platform in Example 5 of the rotary construction platform of the present invention.

[0025] Figure 10 This is a structural diagram of the working platform in the sixth embodiment of the rotary construction platform of the present invention.

[0026] Component number description

[0027] 1 Single pile foundation

[0028] 2 Rotary connection mechanism

[0029] 21 Lower connecting tube

[0030] 22 Upper connecting tube

[0031] 23. Slewing bearing structure

[0032] 24 Ox Leg

[0033] 25 horizontal brace

[0034] 3 Work Platform

[0035] 31 Platform chassis

[0036] 311 frame beam

[0037] 312 main beam

[0038] 313 beams

[0039] 314 Panel or grille

[0040] 315 holes

[0041] 32 short columns

[0042] 33 guardrail

[0043] 34 wheel guard

[0044] 35 Vertical reinforcement structure

[0045] 351 columns

[0046] 352 Pole

[0047] 353 Liang

[0048] 354 tie rod

[0049] 355 Arch

[0050] 356 Tower

[0051] 357 Cable

[0052] 358 Upper chord

[0053] 359 Belly Bar

[0054] 4 Silo

[0055] 5 Equipment

[0056] 6 Berthing and boarding structure

[0057] 7 rails

[0058] 8 Track beam DETAILED DESCRIPTION

[0059] The following describes the implementation of the present invention through specific embodiments. People skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0060] It should be noted that the structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions for the implementation of the present invention. Therefore, they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the efficacy and purpose of the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", etc. quoted in this specification are only for the convenience of description and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0061] See also Figures 1 to 10 The present invention provides a rotating construction platform based on a single pile foundation 1, including a slewing connection mechanism 2 arranged on the top of the single pile foundation 1, and a working platform 3 arranged on the slewing connection mechanism 2, the slewing connection mechanism 2 includes an upper connecting tube 22, a lower connecting tube 21, and a slewing support structure 23 located between the upper connecting tube 22 and the lower connecting tube 21, the working platform 3 is fixedly connected to the upper connecting tube 22, and the lower connecting tube 21 is detachably fixed to the top of the single pile foundation 1, and at least one side of the working platform 3 extends out of the side of the single pile foundation 1.

[0062] As the diameter of the offshore single pile foundation 1 increases, the pile top area increases, the bearing capacity of the single pile foundation 1 is enhanced, and it has sufficient rigidity. Some construction machinery (such as high-pressure rotary jet drilling rigs and cement grouting machines) are small in size, self-weight and construction load. Therefore, it is feasible to arrange a rotating construction platform on the top of the single pile foundation 1.

[0063] The rotating construction platform of the present invention adopts a novel design approach, placing the rotating construction platform on a monopile foundation 1. Specifically, the monopile foundation 1 serves as a structural support, eliminating the need for a separate pile foundation. Furthermore, by providing a slewing connection mechanism 2 with a rotating function, an upper connecting tube 22 rotates relative to a lower connecting tube 21 via a slewing support structure 23, thereby driving a working platform 3 to rotate. The working platform 3 can rotate according to actual construction needs. Therefore, the working platform 3 only needs to be larger in one direction (which can be called the length direction) to extend a longer distance from the monopile foundation 1, while the width dimension is smaller. The rotating construction platform 3 can be moved to the desired location by rotation, making it flexible to use and effectively reducing the overall size of the working platform 3 while achieving the same construction scope, thereby facilitating construction. The rotating construction platform of the present invention is stable and reliable, replacing the previous method of using offshore construction vessels or temporary construction platforms. It reduces the adverse effects of the marine environment, such as tides, waves, and currents, improves the continuity of construction operations, saves construction time and costs, prevents the ship's engine from being impacted by waves when the construction space is small, and improves construction positioning accuracy, ensuring construction quality.

[0064] See also Figures 1 to 10 The present invention will be further described below with reference to several specific embodiments:

[0065] Example 1:

[0066] See also Figures 1 to 5 In this embodiment, as a preferred design, the slewing connection mechanism 2 further includes a corbel 24 fixedly connected to the upper connecting tube 22. The work platform 3 is fixedly connected to the corbel 24. There are multiple corbels 24, which are rationally distributed inside and outside the upper connecting tube 22. A cross brace 25 is also fixedly connected between the corbel 24 and the upper connecting tube 22 to provide further stable support. The corbel 24 facilitates the installation between the slewing connection mechanism 2 and the work platform 3 and increases the support capacity of the work platform 3. Preferably, the corbel 24 is provided with a flange, and the work platform 3 is bolted to the flange on the corbel 24.

[0067] In this embodiment, see Figure 1 、 Figure 2 and Figure 3 The slewing support structure 23 generally consists of two relatively rotatable steel races, capable of simultaneously bearing axial force, radial force, and overturning moment. The slewing support structure 23 can be a single-row four-point contact ball type, a single-row cross-roller type, a double-row or double-row ball type, a triple-row roller type, or a combined ball-and-roller type. As a preferred design, the slewing connection mechanism 2 also includes a slewing control system to control the rotation of the slewing support structure 23. This slewing control system allows the work platform 3 to be efficiently and accurately rotated and positioned to different construction angles and temporarily secured.

[0068] In this embodiment, see Figure 2 、 Figure 4 and Figure 5 As a preferred design, the load-bearing system of the working platform 3 includes a platform base frame 31. The platform base frame 31 is the main structure for carrying equipment 5 and personnel activities. The platform base frame 31 is fixed with a short column 32. The short column 32 can extend downward from the bottom of the platform base frame 31. The lower end of the short column 32 is fixedly connected to the flange of the corbel 24 in the slewing connection mechanism 2 by bolts.

[0069] In this embodiment, see Figure 1 、 Figure 2 and Figure 4 The platform chassis 31 is rectangular, and in the length direction, both sides of the platform chassis 31 extend a long distance from the monopile foundation 1; the width of the platform chassis 31 does not need to be too large, and can meet the needs of equipment and process; therefore, the area of the platform chassis 31 does not need to be too large, and through the rotation of the rotary connection mechanism 2, the platform chassis 31 can cover a larger construction range, so that the platform chassis 31 can adopt a simplified structure as much as possible. In this embodiment, see Figure 5 The platform chassis 31 consists of a main beam 312 arranged along its length, a secondary beam 313 arranged along its width, and panels or grilles 314 mounted on the main beams 312 and secondary beams 313. Short columns 32 are fixedly connected to the main beams 312. The edges of the platform chassis 31 surround the square frame beam 311, thereby ensuring the overall torsional strength of the platform chassis 31. In addition, holes 315 are partially provided on the platform chassis 31 as needed to facilitate construction.

[0070] In this embodiment, see Figure 2 、 Figure 4 and Figure 5 The working platform 3 includes a guardrail 33 and a wheel guard sill 34 arranged at the edge of the platform chassis 31 for safety protection. In addition, a docking and boarding structure 6 is also provided on the side of the working platform 3 to facilitate people to get on and off the platform.

[0071] In the present invention, the working platform 3 is also provided with life-saving and escape facilities, and is provided with necessary sunshade, rainproof and windproof facilities. The working platform 3 is also provided with basic lightning protection facilities.

[0072] As a preferred design, in this embodiment, see Figure 2 、 Figure 4 and Figure 5The working platform 3 is equipped with track beams 8, guide rails 7, brackets, embedded bolts, etc., which are used for installing and moving silos 4 such as oil tanks, water tanks, and cement silos, as well as for installing and moving equipment 5 such as diesel generators, air compressors, mud pumps, high-pressure grouting machines, cement mixers, small cranes, and small drilling rigs. The working platform 3 is also equipped with lifting points for platform lifting and installation. Silos 4 and equipment 5 can be lifted onto the working platform 3 via a crane ship or temporarily fixed to the working platform 3 in advance and then hoisted integrally with the platform.

[0073] In the present invention, the lower connecting tube 21 of the rotary connecting mechanism 2 is fixedly connected to the single column foundation by bolts, so that the rotating construction platform can be flexibly removed from the single pile foundation 1 and can be reused without affecting the subsequent use of the single pile foundation 1.

[0074] In this embodiment, see Figure 5 The load-bearing system of the working platform 3 also includes a vertical reinforcement structure 35. The vertical reinforcement structure 35 includes columns 351 and beams 353. Specifically, the number of columns 351 is determined according to actual needs. The lower ends of the columns 351 are fixed to the platform base frame 31, and the beams 353 are laterally fixed to the columns 351. The columns 351 and the beams 353 together with the platform base frame 31 constitute a frame structure for ensuring the strength and rigidity of the entire working platform 3, improving the load-bearing performance, and reducing the deformation of the working platform 3 due to load.

[0075] Example 2:

[0076] See also Figure 6 This embodiment is an improvement on the first embodiment. The vertical reinforcement structure 35 of the work platform 3 is composed of columns 351, braces 352, and beams 353. Adjacent columns 351 (also known as spans) are fixedly connected by braces 352, improving the stress state at the beam-column joint. The columns 351, braces 352, and beams 353, together with the platform chassis 31, form a horizontal bracing frame structure, further increasing the overall strength and rigidity of the work platform 3.

[0077] Example 3:

[0078] See also Figure 7 In this embodiment, the vertical reinforcement structure 35 of the work platform 3's load-bearing system includes tie rods 354 and arch rings 355. Specifically, the arch rings 355 are fixedly connected to the platform base frame 31 at both ends. Tie rods 354 are fixedly connected between the arch rings 355 and the platform base frame 31. Multiple tie rods 354 are arranged along the length of the platform base frame 31. The tie rods 354, arch rings 355, and platform base frame 31 together form a self-stressed arch structure, which is used to ensure the strength and rigidity of the entire work platform 3. This self-stressed arch-type load-bearing system can improve load-bearing performance and reduce deformation of the work platform 3 due to load.

[0079] Example 4:

[0080] See also Figure 8 In this embodiment, the vertical reinforcement structure 35 of the work platform 3's load-bearing system includes towers 356 and cables 357. Specifically, towers 356 are fixed to the platform base frame 31 near its center. Multiple cables 357 are provided, with their upper ends secured to the top of towers 356 and their lower ends secured to different locations on the platform base frame 31. Together with the platform base frame 31, towers 356 and cables 357 form a cable-stayed structure that ensures the strength and rigidity of the entire work platform 3. This cable-stayed load-bearing system improves load-bearing performance and reduces deformation of the work platform 3 due to load.

[0081] Embodiment 5:

[0082] See also Figure 9 In this embodiment, the vertical reinforcement structure 35 of the load-bearing system of the work platform 3 includes web members 358 and upper chord members 359. Specifically, multiple web members 358 are provided as needed, including vertical and inclined configurations. The lower ends of the web members 358 are fixed to the platform base frame 31, and the upper chord members 359 are laterally fixed to the web members 358. The web members 358 and upper chord members 359, together with the platform base frame 31, form a truss structure that ensures the strength and rigidity of the entire work platform 3, improves load-bearing performance, and reduces deformation of the work platform 3 due to load.

[0083] Example 6:

[0084] See also Figure 10 This embodiment is substantially similar to the first embodiment, differing in that, in this embodiment, the platform underframe 31 of the work platform 3 extends a considerable distance beyond the monopile foundation 1 on one side along its length, while the other side only slightly extends beyond the monopile foundation 1. This embodiment, in other words, extends only on one side of the work platform 3. This embodiment can be used in situations where the platform area requirement is minimal, reducing the structure of the work platform 3 and the weight of the platform itself. However, it places higher technical requirements on the arrangement of the construction equipment 5 and the silo 4.

[0085] The rotary construction platform of the present invention utilizes the top of the single pile foundation 1 as the supporting foundation under the following conditions: as the diameter of the offshore single pile increases, the pile top area increases, and it has sufficient rigidity, the bearing capacity of the single pile is enhanced, and the rotary platform can be stably and reliably supported. Through this rotary construction platform, the construction around the single pile foundation 1 can be effectively completed, such as the reinforcement of the foundation around the pile (such as the replacement method, the high-pressure rotary spraying method, and the cement mixing method). It can replace the original method of using offshore construction vessels or conventional temporary multi-pile platforms, reduce the adverse effects of the marine environment such as tide waves and water currents, improve the continuity of construction, save ship time and costs, avoid the ship engine being shaken by waves and hitting the single pile foundation 1 when the construction space is small, improve the construction positioning accuracy, and ensure the construction quality. The rotary construction platform reduces the size of the platform while achieving the same construction scope, brings convenience to construction, and has practical engineering significance.

[0086] The rotating construction platform of the present invention can also be used for the construction of anti-scour facilities around piles (such as sand blankets, pile riprap, artificial blocks, and solidified soil anti-scour layers), the installation of auxiliary components, and the repair of anti-corrosion coatings. It can also be used as a temporary survey, observation, and testing platform. In addition to its application on offshore single-column foundations, the rotating construction platform, based on the same or similar principles, can also be used on single-column foundations in lakes, rivers, and other water bodies as an aquatic construction platform.

[0087] In summary, the present invention effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

[0088] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A rotating construction platform based on a single pile foundation, characterized by: The slewing mechanism comprises a rotary connection mechanism arranged at the top of the single pile foundation, and a working platform arranged on the rotary connection mechanism, the rotary connection mechanism comprises an upper connecting cylinder, a lower connecting cylinder, and a rotary support structure located between the upper connecting cylinder and the lower connecting cylinder, the rotary connection mechanism also comprises a rotary control system for controlling the rotation of the rotary support structure, the rotary support structure is composed of two steel seat rings that can rotate relative to each other and can simultaneously withstand axial force, radial force and overturning moment; the working platform is fixedly connected to the upper connecting cylinder, the lower connecting cylinder is detachably fixed to the top of the single pile foundation, and at least one side of the working platform extends out of the side of the single pile foundation; the rotary connection mechanism also comprises a bracket fixedly connected to the upper connecting cylinder, the bracket is provided with a flange, and the working platform is fixedly connected to the bracket by bolts. In the embodiment, there are multiple corbels distributed inside and outside the upper connecting tube, and a cross brace is fixedly connected between the corbel and the upper connecting tube. The load-bearing system of the working platform includes a platform chassis, and the platform chassis is fixedly connected to a short column; the short column is fixedly connected to the corbel of the slewing connection mechanism; the platform chassis is rectangular, and one or both sides along the length direction extend out of the single pile foundation, and the platform chassis includes a main beam arranged along the length direction, a secondary beam arranged along the width direction, and a panel or grille installed on the main beam and the secondary beam, and the short column is fixedly connected to the main beam; the load-bearing system of the working platform also includes a vertical reinforcement structure fixedly connected to the platform chassis, and the load-bearing system composed of the platform chassis and the vertical reinforcement structure is a frame structure, a truss structure, a self-stressed arch structure or a cable-stayed structure.

2. The rotary construction platform according to claim 1, characterized in that: A docking and boarding structure is also provided on the side of the working platform.

3. The rotary construction platform according to claim 1, characterized in that: The working platform comprises guardrails and wheel sills arranged on the platform chassis.

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