Offshore pile foundation operation assembly platform and assembly method

Abstract

The invention relates to an offshore pile foundation construction platform, in particular to an offshore pile foundation operation assembly platform and method. Comprising a pile top supporting structure, a working platform and an inter-pile connecting structure, and the pile top supporting structure is detachably fixed to the top of a pipe pile; a hole allowing a pipe pile to penetrate through is formed in the middle of the operation platform, and the operation platform is vertically and adjustably connected to the pile top supporting structure through a connecting structure. The inter-pile connecting structure is a telescopic structure which is folded and placed in the working platform before working construction and extends outwards to form a channel for connecting the working platform on the two adjacent pipe piles during working construction. The assembling platform is simple in structure and convenient to use, not only can a platform structure be formed on the pipe pile, but also the adjacent working platforms can be connected, the whole assembling platform is very easy to assemble and disassemble, and construction is easy.

Description

Technical Field

[0001] The 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 foundations are usually composed of steel pipe piles or pipe piles. After the pile foundation construction is completed, the upper steel structure needs to be installed. In order to form a working surface on the top of the pile, the existing technology generally sets a clamp-type ladder to connect the multi-layer clamps to the pile foundation, and the operators reach the top of the pile foundation through the ladder to work. The main technical problems are as follows: First, the safety risk is high and the structural reliability is not strong. For single pile operations, this technology has the problem that the connection reliability between the clamp and the pile foundation is not high. When personnel work on the top platform, eccentric clamps are prone to deformation. Affected by waves, tides, etc., there is a risk of people falling into the water. Second, the work efficiency is low, the turnover is complicated, and the economy is poor. There are a large number of photovoltaic pile foundations, often tens of thousands of pile foundations. The turnover of the working platform is complicated, and a floating crane ship is required to assist in turnover and installation. In addition, there is no working channel between the piles, and personnel cannot move quickly when they need to work across the piles.

[0003] In order to solve this problem, a prior art device called a floating enclosure construction platform device with a rotating opening and closing proposes a construction platform, which includes a floating body, which is equally or unequally divided into at least two parts, wherein the ends of two adjacent parts are connected by a quick-release structure, and the ends of the other two adjacent parts are hinged. During construction, the parts of the floating body are opened, and then the floating body is towed to the pile position by a boat or other equipment, and then the floating body is put on the pile from the side, and the separated parts are fixed together to form a platform structure that is replaced on the outside of the pile. The platform structure is relatively simple, easy to assemble, and also facilitates the operation of offshore pile foundation construction to a certain extent. However, there are also certain problems with this structure. The main problem is that the platform structure has no connection with the pile itself, and is a platform structure that completely relies on buoyancy to surround the pile. During the actual construction process, the entire platform structure is greatly affected by wind and waves, and the platform will move up and down along the pile. When the wind and waves are large, the platform fluctuates greatly, which seriously affects the safety of the construction personnel on the platform. At the same time, in some cases where the distance between the top of the pile and the water surface is large, this platform cannot be applied. Summary of the invention

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

[0005] The technical solution of the present 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 to the pile top supporting structure through a connecting structure;

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

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

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

[0011] A plurality of supporting plates, wherein the supporting plates are plate-like structures laid on the folding structure in the unfolded state, and the plurality of supporting plates are laid on the folding structure in the unfolded state in sequence 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 in 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, 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 is provided on the top of the storage cabin, and a slide rail guiding the lower end of the folding plate in the storage cabin in the extension direction is provided on the bottom of the storage cabin.

[0014] According to an offshore pile foundation operation assembly platform provided by 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 folding plate in an unfolded state, the supporting flat plate is fixedly connected to the folding plate by the positioning pins inserted into the positioning holes.

[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 an 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 cylinder and an inner cylinder; the outer cylinder is a hollow cylindrical structure with an opening at the lower end; the inner cylinder is a cylindrical structure arranged inside the outer cylinder, and the inner cylinder and the outer cylinder are placed on the inner and outer sides of the pipe pile when they are inverted on the top of the pipe pile.

[0018] An offshore pile foundation operation assembly platform provided by the present application also includes a guide cover; the guide cover is a conical structure that is small at the top and large at the bottom, 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 that is large at the bottom and small at the top.

[0019] According to an offshore pile foundation operation assembly platform provided in the present application, the connection structure includes a plurality of hand chain hoists, which are evenly spaced and distributed circumferentially with the axis of the pipe pile as the center, and the upper end of the hand chain hoist is fixedly connected to the lifting ear 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 rotatably 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 assembly platform, wherein the assembly method is used to assemble any of the above-mentioned offshore pile foundation 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 connection 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] Extend 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 an assembly method of an offshore pile foundation operation assembly platform provided in the present application, the method of 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 other side of the operation platform, 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 an assembled and combined structure, which can be conveniently installed on the pipe piles for construction, and the adjacent working 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 personnel, and the installation and disassembly of this structure are extremely convenient, and the vertical height can be adjusted by itself. 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 working platforms to form a channel structure when in use, and can be folded and retracted into the working platform when not in use, without occupying space, and the transportation, installation and disassembly of the working platform are very convenient;

[0031] 3. The folding structure of the present application is a telescopic folding structure formed by a plurality of folding plates connected by hinges. It has a simple structure, is convenient to shrink and extend, is easy to operate, does not occupy a large amount 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 contraction of the folding board. The folding board is very convenient and smooth to enter and exit 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 the present application is very simple. By fixedly connecting the supporting plate with the folding plate, the folding structure of the original flexible structure is transformed into a rigid component, and the formed channel structure is firm and stable;

[0034] 6. The present 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 sleeved, which can stably support the pile top without shaking, and the structure is also very convenient 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, play a good guiding role, and reduce the difficulty of assembling the inner tube and the outer tube to the top of the pile;

[0037] 9. The connection structure of the present application is extremely convenient 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-scale lifting equipment.

[0038] 10. The structure of the working platform of the present application is very simple, and it can directly enter the pipe pile from the side. The installation of the working platform on the pipe pile is easy to achieve, and there is no need to configure the lifting equipment structure;

[0039] 11. The assembly method of the present application is simple, the assembly platform assembly efficiency is extremely high, and 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 easy 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 the present application (two pipe piles);

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

[0044] Figure 3 : A top view of the assembly platform of the present application;

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

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

[0049] Figure 8 : A schematic diagram of the structure in which the assembly platform of the present application is 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 winch; 15-lifting ear. 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 the present application, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present 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 should not be understood as a limitation on the present application.

[0053] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0054] The present application is further described in detail below in conjunction with 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 assembled structure, which includes multiple independent parts as a whole. The assembly platform is formed after being assembled at the pipe pile position, and the assembly platform of the present application can form an operation channel between two adjacent pipe piles, which is convenient for construction personnel to walk and move between the two pipe piles, greatly improving the working area of ​​the construction personnel, reducing the difficulty of installation and construction of offshore pipe pile photovoltaic equipment, and improving the efficiency of the operation and construction.

[0056] Specifically, 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 on the top of the pipe pile 1, the pile top support structure is a support structure that carries the entire assembly platform onto 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 constructed as a bearing platform, the pile top support structure can be conveniently dismantled without causing any interference to the pile top operation construction; a hole for the pipe pile 1 to pass through is provided in the middle of the operation platform 2, 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 basis of the entire assembly platform and the activity area for 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 construction workers to walk and move. 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 the assembly platform of the present application is assembled: 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 by 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 to 5As shown, the inter-pile connection structure of the present 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 toward another working platform 2 in a horizontal direction. The folding structure of the present embodiment has two functions. One is that it can be extended outward in a horizontal direction, and the other is that it can be contracted and folded in a horizontal direction. When it is extended outward, it serves as the basis of a passage. When it is contracted inward, it can be stored in the storage cabin 3 without occupying space. The storage cabin 3 is a cavity structure with an opening at one end arranged in the working platform 2, which is specially used for placing the folded folding structure. A winch is arranged in the storage cabin 3 to control the contraction of the folding structure.

[0059] The support plate 4 is a plate-like structure laid on the folding structure in the unfolded state. A plurality of support plates 4 are laid on the folding structure in the unfolded state in sequence along the extension direction to form a walking passage for personnel. The support plate 4 is fixedly connected to the folding structure in the unfolded state and limits the extension and contraction of the folding structure. The folding structure of this embodiment is a flexible structure in the extension direction. When the folding structure is stretched, the support plate 4 is laid on the folding structure, and the folding structure is fixed by the support plate 4, so that the support plate 4 and the folding structure form a rigid support passage, which is convenient for construction personnel to pass through.

[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 to 5 As shown, the folding structure of this embodiment includes folding plates 5, each group of folding plates 5 includes 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 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 a 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 to 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, and a buckle structure is installed on the connection box 8. The channel structure of this embodiment is formed by docking two folding structures, that is, the folding structures on the two working platforms 2 are relatively stretched along the stretching direction, and finally the two connection boxes 8 are docked together and fixed to each other through the buckle structure on the connection box 8. At this time, the two folding structures are connected and fixed in the stretching direction, but the folding structure is still flexible and cannot form a channel structure. The support plate 4 is installed 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 stretching direction. The support plate 4 and the folding plate 5 form a fixed rigid component, which can be used as a walking channel for construction workers.

[0063] Specifically, in this embodiment, two locating pins are arranged on both sides of the upper ends of the two folding plates 5 of each group of folding plates, and multiple locating pins arranged at intervals along the length direction can also be arranged on the upper end of each folding plate 5. A locating hole corresponding to the locating pin is opened on the support plate 4. When the support plate 4 is laid on the folding plate 5 in the unfolded state, the folding plate 5 is fixedly connected to the folding plate 5 by inserting the locating pins in the locating hole. During assembly, after the folding plate 5 is fully extended and the connection box 8 at the end is fixedly connected as one, 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. It can also be fixed between two non-adjacent folding plates 5, which is determined according to the width of the support plate 4 and the corresponding folding plate 5 form. As long as the support plate 4 is evenly laid on the upper end of the folding plate 5 and fixed with the folding plate 5, the locating hole on the support plate 4 is passed through the locating pins on the folding plate 5 to complete the connection, and the ends of the adjacent support plates 4 along the extension direction are abutted against each other.

[0064] In order to further improve the stability of the connection of the supporting plate 4, a boss and groove structure can be set at the end of the supporting plate 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 into each other and abutted together to form an integral structure, thereby improving the stability of the channel structure.

[0065] In addition, in order to facilitate the extension and folding and storage of the folding plate 5 relative to the storage compartment 3, the present embodiment 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 at the top of the storage compartment 3, and a slide rail 7 is provided at the bottom of the storage compartment 3 for guiding 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. 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 stretching direction. The slide rail 7 is designed to make the folding plate 5 move more smoothly in the storage compartment 3 along the stretching direction. The lower end of the folding plate 5 will not get 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 stretching direction, until the connection boxes 8 at the telescopic ends of the two folding structures are connected together, and the connection boxes 8 are fixedly connected as a whole through a snap-on structure. The construction workers fix the traction ropes, and at this time the folding plates 5 can be stably connected together under the fixing action of the traction ropes; 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, and 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 groups of folding structures, forming a passage 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 crossbeam 9 erected on the top of the two pipe piles 1 and a plurality of suspension rods 10 arranged on the crossbeam 9, the upper end of the suspension rod 10 is fixed on the crossbeam 9, and the lower end of the suspension rod 10 is telescopically and adjustably connected to the folding structure.

[0070] The crossbeam 9 can be placed on the pile top, or can be a structure fixed at other positions of the pipe pile 1. When it is necessary to work on the pile top, the crossbeam 9 can be placed on the pile body of the pipe pile 1 without affecting the work on the pile top. The suspension rod 10 is located between adjacent pipe piles 1. The suspension rod 10 itself is a vertically adjustable structure, which can be an adjustable rod-shaped structure composed of a telescopic sleeve rod or a basket bolt.

[0071] In a further embodiment of the present application, the present embodiment optimizes the above-mentioned pile top support structure. The pile top support structure of the present embodiment includes two parts, one is a support part, and the other is 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 opening at the lower end, and the inner tube 12 is a cylindrical structure arranged inside the outer tube 11. The inner tube 12 and the outer tube 11 are respectively arranged on the inner and outer sides of the pipe pile 1 when they are inverted on the top 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 arranged on the inner and outer sides of the pipe wall of the pile top of the pipe pile 1. The top plate of the outer tube 11 rests on the pile top, and the outer tube 11 and the inner tube 12 limit the horizontal movement between the entire pile top support structure and the pile top.

[0072] The guide part includes a guide cover 13, which is a conical structure with a small top and a large bottom. The upper end of the guide cover 13 is detachably connected to the lower end of the outer tube 11, and the inner side of the guide cover 13 forms a convergent guide structure with a large bottom and a small top. When installing the pile top support structure, the guide cover 13 is sleeved on the pile top. The lower end diameter of the guide cover 13 is larger than the pile top diameter of the pipe pile 1. Under the guiding effect of the guide cover 13, the outer tube 11 and the inner tube 12 can be conveniently sleeved on the pile top. The outer tube 11, the inner tube 12 and the guide cover 13 are coaxially arranged.

[0073] In a preferred embodiment of the present application, the above-mentioned connection structure is optimized in this embodiment. The connection structure of this embodiment includes a plurality of hand winches 14. In actual application, there are generally two pairs. Each pair includes two hand winches 14 symmetrically arranged around the axis of the pipe pile 1. In this embodiment, there are two pairs of four hand winches 14. The four hand winches 14 are equidistantly spaced along the circumference of the pipe pile 1 around the axis of the pipe pile 1. The upper end of the hand winch 14 is fixedly connected to the lifting ear 15 on the side wall of the outer tube 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 working platform 2 of this embodiment includes two parts, one end of which is hinged to the other part and can rotate around a vertical axis, and the other end is detachably connected to the other part. The two parts are combined to form a working platform, and a hole is left in the middle of the combined working platform 2.

[0075] When assembling an offshore pile foundation operation 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, and the guide cover 13 is sleeved onto the pile top. Under the guiding action of the guide cover 13, the outer tube 11 and the inner tube 12 are sleeved onto the pile top; the two parts of the working platform 2 are opened to make the working platform in 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 winches 14 to fix the working platform 2 with the lifting ears 15 of the outer tube 11, and simultaneously tension the four hand winches 14 to make the working platform 2 rise vertically to the designed height position; Figure 8 As shown, a clamp is installed on the pile body of the pipe pile 1, and the guide cover 13 can be removed. The clamp structure is installed at the position of the guide cover 13. After the clamp 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 clamp, and the two hand chain hoists 14 are tensioned. 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 clamp, and the inner cylinder 11 and the outer cylinder 12 are removed; the construction workers on the two working platforms 2 pull and tension the traction ropes on the folding structure on the opposite side respectively, so that the folding plate 5 of the folding structure on the opposite side is stretched in the extension direction. The two sides are 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 by a buckle structure. The construction personnel 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 support plate 4 is laid on the stretched folding plate 5, and the positioning holes on the support plate 4 are passed through the positioning pins on the folding plate 5. The support plates 4 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 passage between the two groups of working platforms 2; the assembly platform is assembled, and the construction personnel perform 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 pile top or pile 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 cross beam 9 and the suspension rod 10 are dismantled, and then the supporting plate 4 on the folding plate 5 is dismantled in turn, the connection between the two connecting boxes 8 is released, and the folding plate 5 is pulled and retracted by the winch in the storage cabin 3 until the folding plate 5 is completely retracted into the storage cabin 3, and the dismantling of the channel structure is completed; the construction personnel simultaneously tension the hand winch 14, slowly lower the working platform 2 to the water surface, and then open the locking connection between the two splits, drag the working platform 2 away from the pipe pile 1, and complete the dismantling operation of the working 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 the present 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 by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application to be protected. The scope of protection claimed in the present application is defined by the attached claims and their equivalents.

Claims

1. An offshore pile foundation assembly platform, characterized in that: include, A pile top support structure, wherein the pile top support structure is detachably fixed to the top of the pipe pile (1); A working platform (2), wherein a hole is provided in the middle of the working platform (2) for the pipe pile (1) to pass through, 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 which is folded and placed in a working platform (2) before operation and construction, and is stretched outward during operation and construction to form a channel connecting the working platforms (2) on two adjacent pipe piles (1).

2. An offshore pile foundation assembly platform as claimed in claim 1, characterized in that: The inter-pile connection structure comprises: A folding structure, one end of which is arranged in a storage compartment (3) inside a working platform (2), and the other end of which can be extended toward another working platform (2) in a horizontal direction; A plurality of support flat plates (4), wherein the support flat plates (4) are plate-like structures laid on the folding structure in an unfolded state, and the plurality of support flat plates (4) are laid in sequence on the folding structure in an unfolded state along an extension direction to form a passage for people to walk, and the support flat plates (4) are fixedly connected to the folding structure in an unfolded state and restrict the extension and contraction of the folding structure.

3. An offshore pile foundation assembly platform as claimed in claim 2, 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 a 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 effect.

4. An offshore pile foundation assembly platform as claimed in claim 3, 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.

5. The offshore pile foundation assembly platform according to claim 3, 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 means of the positioning pins inserted into the positioning holes.

6. An offshore pile foundation assembly platform as claimed in claim 2, 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 top of two pipe piles (1) and a plurality of suspension rods (10) arranged on the crossbeam (9); the upper end of the suspension rod (10) is fixed on the crossbeam (9), and the lower end of the suspension rod (10) is telescopically and adjustably connected to the folding structure.

7. 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 arranged on the inner and outer sides of the pipe pile (1).

8. An offshore pile foundation assembly platform as claimed in claim 7, characterized in that: It also includes a guide cover (13); the guide cover (13) is a conical structure that is small at the top and large at the bottom; the upper end of the guide cover (13) is detachably connected to the lower end of the outer cylinder (11); and the inner side of the guide cover (13) forms a convergent guide structure that is large at the bottom and small at the top.

9. An assembly method for an offshore pile foundation assembly platform, characterized in that: The assembly method is used to assemble any one of the offshore pile foundation assembly platforms as claimed in claims 1 to 8. 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 supporting 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.

10. The method for assembling an offshore pile foundation assembly platform according to claim 9, characterized in that: The method for extending the inter-pile connection structure comprises: pulling one end of the 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 the passage between the working platforms (2) of adjacent pipe piles (1).

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