Offshore pile foundation operation assembly platform and assembly method

Abstract

The present invention relates to an offshore pile foundation construction platform, specifically an offshore pile foundation operation assembly platform and an assembly method. It includes a pile top support structure, an operation platform and an inter-pile connection structure. The pile top support structure is detachably fixed to the top of the pipe pile; a hole for the pipe pile to pass through is provided in the middle of the operation platform, and the operation platform is vertically adjustable and connected to the pile top support structure through the connection structure; the inter-pile connection structure is a telescopic structure that is folded and placed in the operation platform before operation and construction, and is extended outward during operation and construction to form a channel connecting the operation platforms on two adjacent pipe piles. The assembly platform of the present application has a simple structure and is easy to use. It can not only form a platform structure on the pipe pile, but also connect adjacent operation platforms. The overall installation and disassembly are very easy, and it is easy to construct.

Description

Technical Field

[0001] The present invention relates to an offshore pile foundation construction platform, in particular to an offshore pile foundation operation assembly platform and an assembly method. Background Art

[0002] Offshore pile-based photovoltaic installations typically utilize steel pipe piles or tubular piles. After the pile foundation is completed, the upper steel structure must be installed. To create a working surface at the top of the pile, existing technology typically uses a clamp-type ladder with multiple layers of clamps connected to the pile foundation. Workers use the ladder to reach the top of the pile foundation to perform work. This presents the following major technical issues: First, safety risks are high and the structural reliability is low. For single-pile operations, this technology suffers from low reliability of the clamp-to-pile connection. When workers work on the top platform, eccentric clamp deformation is prone to occur, which can be affected by waves and currents, posing a risk of falling overboard. Second, work efficiency is low, turnover is complex, and cost-effectiveness is poor. The number of photovoltaic pile foundations is large, often reaching tens of thousands. This complex operation platform requires a floating crane to assist with turnover and installation. Furthermore, there are no access routes between the piles, making it difficult for workers to move quickly when working across them.

[0003] To address this problem, a prior art device, titled "A Rotating Opening and Closing Floating Enclosure Construction Platform," proposes a construction platform. This platform comprises a floating body, divided equally or unequally into at least two parts. The ends of two adjacent parts are connected by a quick-release structure, while the ends of the other two adjacent parts are hinged. During construction, the parts of the floating body are unfolded and towed to the pile location using a boat or other equipment. The floating body is then slipped onto the pile from the side, and the separate parts are secured together to form a platform structure that slips over the outside of the pile. This platform structure is relatively simple and easy to assemble, facilitating offshore pile foundation construction to a certain extent. However, this structure also presents certain challenges. Primarily, the platform structure is not connected to the pile itself; it relies entirely on buoyancy to surround the pile. During actual construction, the entire platform structure is significantly affected by wind and waves, causing the platform to move up and down along the pile. In strong winds and waves, the platform fluctuates significantly, seriously impacting the safety of workers on the platform. Furthermore, this platform is not suitable for situations where the distance between the pile top and the water surface is large. Summary of the Invention

[0004] The purpose of this application is to address the deficiencies of the above-mentioned background technology and to provide an offshore pile foundation assembly platform and an assembly method.

[0005] The technical solution of this application is: an offshore pile foundation operation assembly platform, comprising:

[0006] A pile top support structure, wherein the pile top support structure is detachably fixed to the top of the pipe pile;

[0007] A working platform, wherein a hole is provided in the middle of the working platform for the pipe pile to pass through, and the working platform is vertically adjustable connected to the pile top support structure through a connecting structure;

[0008] The inter-pile connection structure is a telescopic structure that is folded and placed in the working platform before operation and construction, and is stretched outward during operation to form a channel connecting the working platforms on two adjacent pipe piles.

[0009] According to an offshore pile foundation operation assembly platform provided by the present application, the inter-pile connection structure includes:

[0010] A folding structure, one end of which is disposed in a storage compartment within the work platform and the other end of which can be extended horizontally toward another work platform;

[0011] Multiple supporting plates, each of which is a plate-like structure laid on the folding structure in the unfolded state, are laid in sequence on the folding structure in the unfolded state along the extension direction to form a walking passage for people, and the supporting plates are fixedly connected to the folding structure in the unfolded state and limit the extension and contraction of the folding structure.

[0012] According to an offshore pile foundation operation assembly platform provided by the present application, the folding structure includes folding plates, each group of folding plates includes two folding plates that are hingedly connected together and can rotate around a horizontal axis at the middle position, and the ends of adjacent folding plates of two adjacent groups of folding plates are hingedly connected together and can rotate around a horizontal axis. Multiple groups of folding plates are hingedly connected to each other to form a folding structure with one end restricted in the storage compartment and unable to escape, and the other end being able to extend outward in the horizontal direction under traction.

[0013] According to an offshore pile foundation operation assembly platform provided in the present application, the top of the storage cabin is provided with a guide rail arranged along the extension direction and limiting the upper end of the folding plate in the storage cabin in the non-extension direction, and the bottom of the storage cabin is provided with a slide rail guiding the lower end of the folding plate in the storage cabin in the extension direction.

[0014] According to an offshore pile foundation operation assembly platform provided in the present application, a plurality of vertically arranged positioning pins are provided at the upper end of the folding plate; positioning holes corresponding to the positioning pins are opened on the supporting flat plate; when the supporting flat plate is laid on the unfolded folding plate, the positioning pins are inserted into the positioning holes and fixedly connected to the folding plate.

[0015] According to an offshore pile foundation operation assembly platform provided by the present application, a connection box is provided at the telescopic end of the folding structure; and a snap-fit ​​structure is installed on the connection box.

[0016] According to an offshore pile foundation operation assembly platform provided in the present application, it also includes a suspension structure for vertically supporting the folding structure in the unfolded state; the suspension structure includes a crossbeam erected on the top of two pipe piles and a plurality of suspension rods arranged on the crossbeam; the upper end of the suspension rod is fixed on the crossbeam, and the lower end of the suspension rod is telescopically and adjustably connected to the folding structure.

[0017] According to an offshore pile foundation operation assembly platform provided by the present application, the pile top support structure includes an outer tube and an inner tube; the outer tube is a hollow cylindrical structure with an open lower end; the inner tube is a cylindrical structure arranged inside the outer tube, and the inner tube and the outer tube are placed on the inner and outer sides of the pipe pile when they are inverted on the top of the pipe pile.

[0018] According to an offshore pile foundation operation assembly platform provided by the present application, it also includes a guide cover; the guide cover is a conical structure with a small upper part and a large lower part, the upper end of the guide cover is detachably connected to the lower end of the outer tube, and the inner side of the guide cover forms a convergent guide structure with a large lower part and a small upper part.

[0019] According to an offshore pile foundation operation assembly platform provided in the present application, the connection structure includes a plurality of hand hoists, which are equidistantly distributed along the circumference with the axis of the pipe pile as the center. The upper end of the hand hoist is fixedly connected to the lifting lug of the side wall of the outer cylinder, and the lower end is fixedly connected to the operation platform.

[0020] According to an offshore pile foundation operation assembly platform provided in the present application, the operation platform includes two split bodies; one end of the split body is hinged to the other split body rotatable around a vertical axis, and the other end is detachably connected to the other split body.

[0021] The present application also provides an assembly method for an offshore pile foundation operation assembly platform, wherein the assembly method is used to assemble any of the above-mentioned offshore pile foundation operation assembly platforms, comprising:

[0022] After the pipe pile construction is completed, the pile top support structure is installed on the top of the pipe pile;

[0023] Drag the working platform to the pipe pile and put the working platform onto the pipe pile;

[0024] Use the connecting structure to connect the working platform and the pile top support structure to adjust the height of the working platform;

[0025] After reaching the required working height, install a clamp on the pile, fix the working platform to the clamp, and remove the pile top support structure;

[0026] Stretching the inter-pile connection structure to form a passage between the working platforms of adjacent pipe piles;

[0027] Complete the platform assembly.

[0028] According to a method for assembling an offshore pile foundation operation assembly platform provided in the present application, the method for extending the inter-pile connection structure includes: pulling one end of a folding structure in the inter-pile connection structure to extend the folding structure toward the operation platform on the other side, fixing the ends of the two folding structures together, laying a supporting plate on the folding structure in the unfolded state, vertically supporting the stretched folding structure and the supporting plate, and completing the arrangement of the passage between the operation platforms of adjacent pipe piles.

[0029] The advantages of the present application are as follows: 1. The assembly platform of the present application is a modular structure, which can be easily installed on the pipe piles to form an operating construction platform, and adjacent operating platforms can be connected as a whole through the channel formed by the connecting structure between the piles, which greatly facilitates the operation of the construction workers. Moreover, the installation and disassembly of this structure are extremely convenient, and the vertical height can be adjusted automatically. The installation and disassembly process does not require any large-scale lifting equipment, and the operation is extremely simple, which has great promotion value.

[0030] 2. The inter-pile connection structure of the present application can be extended outwards to connect adjacent work platforms to form a channel structure when in use, and can be folded and retracted into the work platform when not in use, thus saving space and making the transportation, installation and removal of the work platform very convenient;

[0031] 3. The folding structure of the present application is a telescopic folding structure formed by multiple hinged folding plates. It has a simple structure, is easy to retract and extend, is easy to operate, does not take up a lot of space, and is extremely simple to transport, assemble and disassemble.

[0032] 4. The present application provides guide rails and slide rail structures in the storage compartment to facilitate the extension and retraction of the folding board. The folding board can be easily and smoothly moved in and out of the storage compartment, and the control of the folding board is more stable and safe.

[0033] 5. The method of laying the supporting plate in this application is very simple. By fixing the supporting plate and the folding plate, the folding structure of the original flexible structure is transformed into a rigid component, and the channel structure formed is firm and stable;

[0034] 6. This application also provides a suspension structure, which can provide vertical support for the formed channel structure, further improving the stability of the channel structure and the safety of construction workers;

[0035] 7. The pile top support structure of the present application adopts a structure in which an inner tube and an outer tube are connected together, which can stably support the pile top without shaking, and the structure is also very easy to disassemble;

[0036] 8. The present application is provided with a guide cover, which can facilitate the installation of the binding structure to the top of the pile, plays a good guiding role, and reduces the difficulty of assembling the inner and outer tubes to the top of the pile;

[0037] 9. The connection structure of the present application is extremely easy to operate. By setting up multiple hand hoists, the height of the working platform can be easily adjusted. The operation is simple and can be carried out without any large lifting equipment.

[0038] 10. The structure of the working platform of the present application is very simple, and it can be directly accessed from the side of the pipe pile. The installation method of the working platform on the pipe pile is easy to implement, and no lifting equipment structure is required;

[0039] 11. The assembly method of the present application is simple, and the assembly efficiency of the assembly platform is extremely high. The formed assembly platform meets the requirements of offshore pile foundation construction, greatly improving the efficiency and safety of offshore pile foundation construction;

[0040] 12. The method of forming the channel structure of the present application is very simple, and the stretching and installation operation of the folding structure is easy and simple to implement.

[0041] The assembly platform of the present application has a simple structure and is easy to use. It can not only form a platform structure on the pipe piles, but also connect adjacent work platforms. The overall installation and disassembly are very easy, and it is easy to construct, and has great promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 : Schematic diagram of the assembly platform structure of this application (two pipe piles);

[0043] Figure 2 : Schematic diagram of the assembly platform structure of this application (single pipe pile);

[0044] Figure 3 : Top view of the assembly platform of this application;

[0045] Figure 4 : Schematic diagram of the folding plate structure of this application;

[0046] Figure 5 : Schematic diagram of the structure in which the folding plate of the present application is extended and connected to another folding plate;

[0047] Figure 6 : Schematic diagram of the pile top support structure of this application;

[0048] Figure 7 : Schematic diagram of the working platform and pipe pile layout of this application;

[0049] Figure 8 : Schematic diagram of the structure of the assembly platform of the present application transferred from the pile top support structure to the hoop;

[0050] Among them: 1-pipe pile; 2-working platform; 3-storage cabin; 4-support plate; 5-folding plate; 6-guide rail; 7-slide rail; 8-connecting box; 9-crossbeam; 10-suspender rod; 11-outer cylinder; 12-inner cylinder; 13-guide cover; 14-hand hoist; 15-lifting eye. DETAILED DESCRIPTION

[0051] The embodiments of the present application are described in detail below, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0052] In the description of this application, it should be understood that the terms "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0053] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0054] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0055] The present application relates to an offshore pile foundation operation assembly platform, which is mainly used for the installation of offshore photovoltaic equipment. The assembly platform of the present application is a modular structure, which includes multiple independent parts as a whole. The assembly platform is formed after being assembled at the pipe pile position. The assembly platform of the present application can form an operation channel between two adjacent pipe piles, which is convenient for construction workers to walk and move between the two pipe piles, greatly improving the working area of ​​the construction workers, reducing the difficulty of installation and construction of offshore pipe pile photovoltaic equipment, and improving the efficiency of operation and construction.

[0056] Specifically, such as Figures 1 to 8, an offshore pile foundation operation assembly platform, including a pile top support structure, an operation platform 2 and an inter-pile connection structure, the pile top support structure is detachably fixed to the top of the pipe pile 1, the pile top support structure is the support structure that carries the entire assembly platform to the pipe pile 1, and the assembly platform is completely supported by the pile top support structure during the assembly process. After the assembly of the operation platform 2 is completed and the operation platform 2 begins to be used as a bearing platform for construction, the pile top support structure can be easily dismantled without causing any interference to the pile top operation construction; a hole is provided in the middle of the operation platform 2 for the pipe pile 1 to pass through, and the operation platform 2 is vertically adjustable and connected to the pile top support structure through the connection structure, and the operation platform 2 It is the working foundation of the entire assembly platform and the activity area of ​​the construction workers. The working platform is mounted on the pipe pile 1. The working platform 2 is fixedly connected to the pipe pile 1 through a connecting structure, and the connecting structure can vertically adjust the position of the working platform 2; the inter-pile connecting structure is a telescopic structure that is folded and placed in the working platform 2 before construction work, and extends outward during construction work to form a channel connecting the working platforms 2 on two adjacent pipe piles 1. The inter-pile connecting structure extends outward when in use to form a channel structure connecting the two working platforms 1, which is convenient for the walking and movement of construction workers. The inter-pile connecting structure is folded and stored in the working platform 2 when not in use, does not take up space, and does not affect the transportation, installation and disassembly of the working platform 2.

[0057] Specifically, when assembling the assembly platform of the present application: after the construction of the pipe pile 1 is completed, the pile top support structure is installed on the top of the pipe pile 1; the working platform 2 is dragged (the working platform 2 can be dragged by a small boat, and the working platform 2 is a hollow pontoon structure that can float on the water) to the pipe pile 1, and the working platform 2 is sleeved onto the pipe pile 1; the working platform 2 and the pile top support structure are connected using a connecting structure, and the height of the working platform 2 is adjusted; after the required working height is reached, a clamp is installed on the pipe pile 1, the working platform 2 is fixed to the clamp, and the pile top support structure is removed, such as Figure 8 As shown; the connecting structure between the piles is stretched to form a channel between the working platforms 2 of adjacent pipe piles 1 to complete the assembly of the platform.

[0058] In some embodiments of the present application, the present embodiment optimizes the above-mentioned pile connection structure. Specifically, Figures 3-5As shown, the inter-pile connection structure of this embodiment includes a folding structure and a plurality of supporting plates 4. One end of the folding structure is arranged in a storage cabin 3 inside the working platform 2, and the other end can be extended horizontally toward another working platform 2. The folding structure of this embodiment has two functions. One is that it can extend outward in the horizontal direction, and the other is that it can shrink and fold in the horizontal direction. When it extends outward, it serves as the basis of the passage. When it shrinks inward, it can be stored in the storage cabin 3 without taking up space. The storage cabin 3 is a cavity structure with an open end arranged in the working platform 2, which is specially used to place the folded folding structure. A winch is provided in the storage cabin 3 to control the shrinkage of the folding structure.

[0059] The support plate 4 is a plate-like structure that is laid on the unfolded folding structure. Multiple support plates 4 are laid sequentially on the unfolded folding structure along the extension direction to form a pedestrian passage. The support plates 4 are fixedly connected to the unfolded folding structure and restrict its expansion and contraction. The folding structure of this embodiment is flexible in the extension direction. When the folding structure is unfolded, the support plates 4 are laid on the folding structure and used to secure the folding structure. The support plates 4 and the folding structure form a rigid support passage, facilitating the passage of construction workers.

[0060] There are many types of folding structures, as long as they can meet the function of expansion and contraction. This embodiment further optimizes the folding structure, such as Figures 3-5 As shown, the folding structure of this embodiment includes folding plates 5, each group of folding plates 5 includes two folding plates 5 that are hingedly connected together and can rotate around a horizontal axis at the middle position, and the ends of adjacent folding plates 5 of two adjacent groups of folding plates 5 are hingedly connected together and can rotate around a horizontal axis. Multiple groups of folding plates 5 are hingedly connected to each other to form a folding structure with one end being restricted in the storage compartment 3 and unable to escape, and the other end being stretched outward in the horizontal direction under traction.

[0061] Two traction ropes are connected to the folding structure. One traction rope is connected to the winch in the storage compartment 3. The folding plate 5 can be moved toward the side of the winch by pulling the traction rope by the winch until the folding plate 5 is stored in the storage compartment 3. The other traction rope is at the telescopic end of the folding structure, which is convenient for construction workers to pull the folding plate 5 of the folding structure so that the folding plate 5 can be fully unfolded to form a channel structure.

[0062] The telescopic end of the folding structure is provided with a connection box 8, on which a snap-fit ​​structure is mounted. The passage structure of this embodiment is formed by docking two folding structures. That is, the folding structures on the two work platforms 2 are relatively extended in the extension direction, and finally the two connection boxes 8 are docked together and fixed to each other as a whole via the snap-fit ​​structure on the connection boxes 8. At this point, the two folding structures are connected and fixed in the extension direction, but the folding structures are still flexible and cannot form a passage structure. The support plate 4 is mounted on the folding plate 5, and the folding plate 5 is fixed so that the folding plate 5 cannot be contracted and folded in the extension direction. The support plate 4 and the folding plate 5 form a fixed rigid member, which can now serve as a walking passage for construction workers.

[0063] Specifically, in this embodiment, two locating pins are provided on both sides of the upper ends of the two folding plates 5 of each group of folding plates. Alternatively, multiple locating pins spaced along the length direction may be provided on the upper end of each folding plate 5. Positioning holes corresponding to the locating pins are provided on the support plate 4. When the support plate 4 is laid on the unfolded folding plate 5, the locating pins inserted into the locating holes are fixedly connected to the folding plate 5. During assembly, after the folding plates 5 are fully extended and the connection boxes 8 at the ends are fixedly connected, the support plate 4 is installed between the two adjacent folding plates 5. The support plate 4 limits and fixes the two adjacent folding plates 5 in the extension direction. Alternatively, the support plate 4 may be fixed between two non-adjacent folding plates 5. The width of the support plate 4 and the corresponding folding plate 5 form are determined. As long as the support plates 4 are evenly laid on the upper ends of the folding plates 5 and fixed to the folding plates 5, the connection is completed by inserting the locating holes on the support plate 4 through the locating pins on the folding plate 5. The ends of the adjacent support plates 4 along the extension direction abut against each other.

[0064] In order to further improve the stability of the connection of the supporting plates 4, a boss and groove structure can be set at the end of the supporting plates 4 along the extension direction. When laying the supporting plates 4, the boss at the end of one supporting plate 4 is snapped into the groove of the adjacent supporting plate 4, so that the adjacent supporting plates 4 are bitten and abutted against each other to form an integral structure, thereby improving the stability of the channel structure.

[0065] In addition, in order to facilitate the extension and folding storage of the folding plate 5 relative to the storage compartment 3, this embodiment provides a guide rail 6 arranged along the extension direction on the top of the storage compartment 3 and limiting the upper end of the folding plate 5 in the storage compartment 3 in the non-extension direction, and a slide rail 7 is provided at the bottom of the storage compartment 3 to guide the lower end of the folding plate 5 in the storage compartment 3 in the extension direction.

[0066] The specific structure can be that positioning columns (or pulleys) are set at both ends of the folding plate 5 in the vertical extension direction, and the guide rail 6 is a groove-shaped structure with an open side. The positioning column is clipped into the guide rail 6. The guide rail 6 does not limit the movement of the positioning column along the extension direction, but limits the movement of the positioning column along the vertical and vertical extension directions, which plays a good limiting and guiding effect.

[0067] The slide rail 7 is a guide structure with multiple rollers arranged in sequence along the extension direction. The purpose of designing the slide rail 7 is to make the folding plate 5 move more smoothly in the extension direction in the storage compartment 3. The lower end of the folding plate 5 will not be stuck with the bottom of the storage compartment 3, and the extension and retraction of the folding plate 5 become extremely smooth.

[0068] During actual use, the construction workers on the two working platforms 2 pull and tension the traction ropes on the folding structures on the opposite sides respectively, so that the folding plates 5 of the folding structures on the opposite sides stretch toward this side along the extension direction until the connection boxes 8 at the telescopic ends of the two folding structures are connected together. The connection boxes 8 are fixedly connected as one through a snap-on structure. The construction workers fix the traction ropes. At this time, the folding plates 5 can be stably connected together under the fixing action of the traction ropes; the support plates 4 are laid on the stretched folding plates 5, and the positioning holes on the support plates 4 are passed through the positioning pins on the folding plates 5. They are laid in sequence, and the adjacent support plates 4 are connected together until the support plates 4 are completely covered with the two groups of folding structures, forming a channel between the two groups of working platforms 2.

[0069] In other embodiments of the present application, in order to further improve the stability of the entire channel structure, such as Figure 1 As shown, it also includes a suspension structure for vertically supporting the folding structure in the unfolded state. The suspension structure includes a beam 9 erected on the top of the two pipe piles 1 and a plurality of suspension rods 10 arranged on the beam 9. The upper end of the suspension rod 10 is fixed on the beam 9, and the lower end of the suspension rod 10 is telescopically and adjustable and connected to the folding structure.

[0070] The crossbeam 9 can be placed on the top of the pile or fixed elsewhere on the pile 1. When work is required on the pile top, the crossbeam 9 can be placed on the pile body without affecting the work on the pile top. The hanger 10 is located between adjacent piles 1 and is a vertically adjustable structure. It can be an adjustable rod structure composed of a telescopic sleeve or a basket bolt.

[0071] In a further embodiment of the present application, the above-mentioned pile top support structure is optimized. The pile top support structure of this embodiment includes two parts: a support part and a guide part. The support part includes an outer tube 11 and an inner tube 12. The outer tube 11 is a hollow cylindrical structure with an open lower end, and the inner tube 12 is a cylindrical structure arranged inside the outer tube 11. When the inner tube 12 and the outer tube 11 are inverted on the top of the pipe pile 1, they are respectively placed on the inner and outer sides of the pipe pile 1. The support part formed by the outer tube 11 and the inner tube 12 is an inverted structure. When the outer tube 11 and the inner tube 12 are inverted on the pile top, the outer tube 11 and the inner tube 12 are respectively placed on the inner and outer sides of the pile top wall of the pipe pile 1. The top plate of the outer tube 11 rests on the pile top. The outer tube 11 and the inner tube 12 restrict the horizontal movement between the entire pile top support structure and the pile top.

[0072] The guide portion includes a guide hood 13, a tapered structure with a smaller top and a larger bottom. The upper end of the guide hood 13 is detachably connected to the lower end of the outer tube 11, forming a convergent guide structure with a larger bottom and a smaller top. When installing the pile top support structure, the guide hood 13 is placed over the pile top. The lower end diameter of the guide hood 13 is larger than the top diameter of the pile 1. Under the guidance of the guide hood 13, the outer tube 11 and inner tube 12 can be easily placed over the pile top. The outer tube 11, inner tube 12, and guide hood 13 are arranged coaxially.

[0073] In a preferred embodiment of the present application, this embodiment optimizes the above-mentioned connection structure. The connection structure of this embodiment includes multiple hand hoists 14. In actual application, there are generally two pairs, and each pair includes two hand hoists 14 symmetrically arranged with the axis of the pipe pile 1 as the center. This embodiment has two pairs of four hand hoists 14. The four hand hoists 14 are equidistantly spaced along the circumference of the pipe pile 1 with the axis of the pipe pile 1 as the center. The upper end of the hand hoist 14 is fixedly connected to the lifting ear 15 on the side wall of the outer cylinder 11, and the lower end is fixedly connected to the working platform 2.

[0074] In other embodiments of the present application, the structure of the working platform 2 is optimized. Specifically, Figure 7 As shown, the work platform 2 of this embodiment comprises two separate parts, one end of which is hingedly connected to the other part and rotatable about a vertical axis, and the other end is detachably connected to the other part. The two separate parts are combined to form the work platform, and a hole is left in the middle of the combined work platform 2.

[0075] When assembling an offshore pile foundation assembly platform of the present application: after the construction of the pipe pile 1 is completed, the pile top support structure is installed on the top of the pipe pile 1, the guide cover 13 is sleeved onto the pile top, and under the guidance of the guide cover 13, the outer cylinder 11 and the inner cylinder 12 are sleeved onto the pile top; the two parts of the working platform 2 are opened to make the working platform into an eight-shaped shape, and the working platform 2 is dragged to the pipe pile 1, so that the working platform 2 is sleeved onto the outside of the pipe pile 1, and the two parts of the working platform 2 are fixed together by a locking structure to complete the assembly of the working platform 2; the construction personnel use four hand hoists 14 to connect the working platform 2 with the lifting lugs 15 of the outer cylinder 11, and simultaneously tension the four hand hoists 14 to make the working platform 2 rise vertically to the designed height position; Figure 8 As shown, a hoop is installed on the pile body of the pipe pile 1, and the guide cover 13 can be removed. The hoop structure is installed in the position of the guide cover 13. After the hoop is installed, the connection between the two hand chain hoists 14 on the opposite sides and the corresponding lifting ears 15 is loosened, and the upper ends of the two hand chain hoists 14 are connected to the hoop, and the two hand chain hoists 14 are tightened. Then, the other two hand chain hoists 14 are installed and adjusted in the same way, so that the working platform 2 is transferred to the hoop, and the inner cylinder 11 and the outer cylinder 12 are removed; the construction workers on the two working platforms 2 respectively pull and tension the traction ropes on the folding structures on the opposite sides, so that the folding plates 5 of the folding structure on the opposite side are stretched in the extension direction. This side is stretched out until the connection boxes 8 at the telescopic ends of the two folding structures are connected together. The connection boxes 8 are fixedly connected as one through the snap-fit ​​structure. The construction workers fix the traction rope. At this time, the folding plates 5 can be stably connected together under the fixing effect of the traction rope; the supporting plates 4 are laid on the stretched folding plates 5, and the positioning holes on the supporting plates 4 are passed through the positioning pins on the folding plates 5. They are laid in sequence and the adjacent supporting plates 4 are connected together until the supporting plates 4 are completely covered with the two sets of folding structures, forming a passage between the two sets of working platforms 2; the assembly platform is assembled, and the construction workers carry out pile top construction based on the working platform 2;

[0076] In some cases, in order to improve the stability of the channel structure, a suspension structure can be installed on the pile top. A crossbeam 9 is installed on the top or body of the pipe pile 1, and a suspension rod 10 is installed between the crossbeam 9 and the folding plate 5. The length of the suspension rod 10 is adjusted so that the channel structure formed by the folding plate 5 and the supporting plate 4 can be stably suspended between the two pipe piles 1.

[0077] After the pile top operation is completed, the entire assembly platform is dismantled, the crossbeam 9 and the boom 10 are dismantled, and then the supporting plate 4 on the folding plate 5 is removed in turn, the connection between the two connecting boxes 8 is released, and the winch in the storage cabin 3 is used to pull the folding plate 5 to retract until the folding plate 5 is completely retracted into the storage cabin 3, completing the dismantling of the channel structure; the construction personnel simultaneously tension the hand hoist 14, slowly lowering the work platform 2 to the water surface, and then open the locking connection between the two splits, dragging the work platform 2 away from the pipe pile 1, completing the dismantling operation of the work platform 2; remove the clamp on the pipe pile 1 to complete the dismantling of the entire assembly platform.

[0078] like Figure 1 As shown, the stretching direction of this application is Figure 1 The left and right directions in this application refer to the vertical direction. Figure 1 The up and down directions in .

[0079] The above shows and describes the basic principles, main features, and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present application. Various changes and improvements may be made to the present application without departing from the spirit and scope of the present application. Such changes and improvements are intended to fall within the scope of the present application. The scope of protection claimed in this application is defined by the appended claims and their equivalents.

Claims

1. An offshore pile foundation assembly platform, characterized by: include, A pile top support structure, the pile top support structure being detachably fixed to the top of the pipe pile (1); A working platform (2), wherein a hole for the pipe pile (1) to pass through is provided in the middle of the working platform (2), and the working platform (2) is vertically adjustable connected to the pile top support structure via a connecting structure; The inter-pile connection structure is a telescopic structure that is folded and placed inside the working platform (2) before construction and is stretched outward during construction to form a passage connecting the working platforms (2) on two adjacent pipe piles (1); The inter-pile connection structure includes: A folding structure, one end of which is arranged in a storage compartment (3) inside a work platform (2), and the other end of which can be extended horizontally toward another work platform (2); A plurality of supporting flat plates (4) are plate-like structures laid on a folding structure in an unfolded state. The plurality of supporting flat plates (4) are laid in sequence on the folding structure in an unfolded state along an extension direction to form a pedestrian passage. The supporting flat plates (4) are fixedly connected to the folding structure in an unfolded state and limit the extension and contraction of the folding structure.

2. The offshore pile foundation assembly platform according to claim 1, characterized in that: The folding structure comprises folding plates (5), each group of folding plates (5) comprises two folding plates (5) which are hingedly connected together and can rotate around a horizontal axis at the middle position, and the ends of adjacent folding plates (5) of two adjacent groups of folding plates (5) are hingedly connected together and can rotate around the horizontal axis. Multiple groups of folding plates (5) are hingedly connected to each other to form a folding structure in which one end is restricted in the storage compartment (3) and cannot escape, and the other end can be stretched outward in the horizontal direction under the pulling action.

3. The offshore pile foundation assembly platform according to claim 2, characterized in that: The top of the storage compartment (3) is provided with a guide rail (6) arranged along the extension direction and limiting the upper end of the folding plate (5) in the storage compartment (3) in the non-extension direction, and the bottom of the storage compartment (3) is provided with a slide rail (7) guiding the lower end of the folding plate (5) in the storage compartment (3) in the extension direction.

4. The offshore pile foundation assembly platform according to claim 2, characterized in that: The upper end of the folding plate (5) is provided with a plurality of positioning pins arranged in a vertical direction; the supporting plate (4) is provided with positioning holes corresponding to the positioning pins; when the supporting plate (4) is laid on the folding plate (5) in an unfolded state, it is fixedly connected to the folding plate (5) by inserting the positioning pins into the positioning holes.

5. The offshore pile foundation assembly platform according to claim 1, characterized in that: It also includes a suspension structure for vertically supporting the folding structure in an unfolded state; the suspension structure includes a crossbeam (9) erected on the tops of two pipe piles (1) and a plurality of suspension rods (10) arranged on the crossbeam (9); the upper ends of the suspension rods (10) are fixed on the crossbeam (9), and the lower ends of the suspension rods (10) are telescopically and adjustably connected to the folding structure.

6. The offshore pile foundation assembly platform according to claim 1, characterized in that: The pile top support structure comprises an outer cylinder (11) and an inner cylinder (12); the outer cylinder (11) is a hollow cylindrical structure with an open lower end; the inner cylinder (12) is a cylindrical structure arranged inside the outer cylinder (11); when the inner cylinder (12) and the outer cylinder (11) are inverted on the top of the pipe pile (1), they are respectively placed on the inner and outer sides of the pipe pile (1).

7. The offshore pile foundation assembly platform according to claim 6, characterized in that: The guide cover (13) is a conical structure with a small upper portion and a large lower portion. The upper end of the guide cover (13) is detachably connected to the lower end of the outer cylinder (11). The inner side of the guide cover (13) forms a convergent guide structure with a large lower portion and a small upper portion.

8. A method for assembling an offshore pile foundation assembly platform, characterized by: The assembly method is used to assemble any one of the offshore pile foundation assembly platforms according to claims 1 to 7. include, After the construction of the pipe pile (1) is completed, a pile top support structure is installed on the top of the pipe pile (1); Drag the working platform (2) to the pipe pile (1), and sleeve the working platform (2) onto the pipe pile (1); Using a connecting structure to connect the working platform (2) and the pile top support structure, and adjusting the height of the working platform (2); After reaching the required working height, a clamp is installed on the pipe pile (1), the working platform (2) is fixed to the clamp, and the pile top support structure is removed; Extending the inter-pile connection structure to form a passage between the working platforms (2) of adjacent pipe piles (1); Complete the platform assembly.

9. The method for assembling an offshore pile foundation assembly platform according to claim 8, wherein: The method for extending the inter-pile connection structure comprises: pulling one end of a folding structure in the inter-pile connection structure to extend the folding structure toward the working platform (2) on the other side, fixing the ends of the two folding structures together, laying a supporting plate (4) on the folding structure in the unfolded state, vertically supporting the extended folding structure and the supporting plate (4), and completing the arrangement of a passage between the working platforms (2) of adjacent pipe piles (1).

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