Construction method of pile shoe

Abstract

The invention relates to a construction method of a pile shoe. The construction method comprises the steps that a jig frame is manufactured; the pile shoe is divided into a plurality of structural assemblies, and the structural assemblies comprise a bottom plate assembly, a central top plate assembly, a buoyancy tank assembly, a plurality of large vertical plate assemblies and a plurality of peripheral top plate assemblies. A bottom plate assembly, a center top plate assembly, a buoyancy tank assembly, a plurality of large vertical plate assemblies and a plurality of peripheral top plate assemblies are prefabricated. The prefabrication of the bottom plate combination body is carried out on the jig frame, and the prefabrication of the other combination bodies is independently carried out. Assembling the combination bodies: after the bottom plate combination body and the jig frame are mounted, mounting the central top plate combination body on the bottom plate combination body, then mounting the buoyancy tank combination body on the central top plate combination body, then mounting each large vertical plate combination body, and finally mounting each peripheral top plate combination body. According to the method, the part distribution and sorting efficiency is greatly improved, the part sorting period is shortened, the construction period is shortened, and the construction cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of ship and ocean engineering, and in particular to a method for constructing a pile shoe. Background Art

[0002] There are abundant offshore wind energy resources. Actively promoting the development of offshore wind power is of great significance for promoting the control of atmospheric haze in coastal areas, adjusting the energy structure and transforming the economic development mode. With the development of the offshore wind power industry, shipbuilding companies and supporting manufacturers have increased the research and development of wind power installation platforms in recent years, enhanced their design and manufacturing capabilities, and achieved certain breakthroughs. At the same time, shipbuilding and related companies have also accelerated the research on the design and construction technology of wind power installation platforms. The pile shoe is a device used by the self-elevating wind power installation platform to fix the main hull. It is fixed to the bottom of the pile leg. Its function is to protect the pile leg; the second is to facilitate the pile. In order to ensure the safe operation of the offshore wind power installation platform, the pile shoe of the platform must meet the bearing capacity, anti-slip ability, anti-overturning ability and shoe pulling ability in the working sea area, so the type and bearing area of ​​the pile shoe are closely related to the sea area foundation. In order to increase the support force of the self-elevating wind power installation platform and reduce the pressure on the seabed, a large-area pile shoe is usually installed at the bottom of its pile legs. The pile shoe is welded to the pile leg and has an independent water-tight structure, which can provide support for the platform and provide lateral resistance to prevent the platform from shifting sideways. The pile shoe is one of the most important and critical structures of the self-elevating wind power installation platform. Generally, a wind power installation ship has four pile shoes distributed at the four corners of the hull, which are large in size and complex in structure.

[0003] The existing pile shoe construction process is mostly a bulk parts construction mode. The basic process is: after the base plate is installed, the middle column structure is installed, and the remaining internal structures are assembled in bulk form, from inside to outside and from bottom to top, and then the pile shoe top plate is installed. Due to the dense internal structure of the pile shoe and the large number of similar parts, cutting, distribution, sorting and assembly are difficult and time-consuming. At the same time, due to the extremely heavy weight of the pile shoe after forming, it can only be constructed under a large-tonnage crane, which will cause the four pile shoes to have many parts piled up, difficult to pick, and tight crane resources during the construction process. In addition, the top plate and internal structure of the pile shoe require a large amount of overhead welding, which makes construction difficult. Summary of the invention

[0004] One purpose of the present invention is to solve the problems existing in the prior art, such as the difficulty and time of cutting, distributing, sorting and assembling parts, the shortage of crane resources during the construction process, the large amount of overhead welding when welding the top plate and internal structure, and the difficulty of construction, and to provide a method for constructing a pile shoe. In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A method for constructing a pile shoe comprises the following steps:

[0006] Make tire frame;

[0007] Pile shoe division: the pile shoe is divided into a plurality of structural assemblies, wherein the plurality of structural assemblies include a bottom plate assembly, a central top plate assembly, a pontoon assembly, a plurality of large vertical plate assemblies and a plurality of peripheral top plate assemblies;

[0008] Assembly prefabrication: prefabricate the bottom plate assembly, the central top plate assembly, the pontoon assembly, several large vertical plate assemblies and several peripheral top plate assemblies respectively, wherein the prefabrication of the bottom plate assembly is carried out on the tire frame, and the prefabrication of the remaining assemblies is carried out independently;

[0009] Assembly of the assembly: After the installation of the bottom plate assembly and the tire frame is completed, the central top plate assembly is installed on the bottom plate assembly, and then the pontoon assembly is installed on the central top plate assembly, and then each large vertical plate assembly is installed, and finally each peripheral top plate assembly is installed.

[0010] In one of the embodiments, the central top plate assembly and the plurality of peripheral top plate assemblies are formed by dividing the pile shoe top plate and the internal structure of the pile shoe with the top plate seam as the dividing line.

[0011] In one embodiment, the number of the central roof assembly is one, and the number of the peripheral roof assembly is six.

[0012] In one of the embodiments, in the step of assembling the assembly, each peripheral roof assembly is installed sequentially in a counterclockwise or clockwise direction around a central area where the central roof assembly is located.

[0013] In one embodiment, the central top plate assembly is made by using the central top plate as a base plate and installing the central internal components on the central top plate. After the welding inspection of the central top plate assembly is completed, it is turned over and assembled on the bottom plate assembly.

[0014] In one embodiment, the pontoon assembly is made of a pontoon top plate as a base plate, and internal pontoon components are installed on the pontoon top plate. After the welding inspection of the pontoon assembly is completed, it is turned over and assembled on the central top plate assembly.

[0015] In one embodiment, each outer top plate assembly is made of an outer top plate as a base plate, and outer internal components are installed on the outer top plate. After the welding inspection of each outer top plate assembly is completed, it is turned over and assembled on the bottom plate assembly.

[0016] In one embodiment, a toothless plate installation area is provided on the bottom plate assembly. In the step of prefabrication of the assembly, before the tire frame on the bottom plate assembly is prefabricated, the toothless plate installation area of ​​the bottom plate assembly is replaced with a plate:

[0017] Cutting the bottom plate of the bottom plate assembly along the contour line of the non-toothed plate installation area;

[0018] A reinforced bottom plate is welded in the installation area of ​​the toothless plate. The thickness of the reinforced bottom plate is greater than the thickness of the original bottom plate. The material of the reinforced bottom plate is the same as that of the toothless plate.

[0019] In one embodiment, a portion of the peripheral top plate assembly is provided with a toothless plate connection area. In the step of prefabricating the assembly, the toothless plate connection area on the peripheral top plate of the peripheral top plate assembly is first replaced:

[0020] Cutting the outer top plate of the outer top plate assembly along the contour line of the toothless plate connection area;

[0021] A reinforced top plate is welded in the connection area of ​​the toothless plate. The thickness of the reinforced top plate is greater than the thickness of the original outer top plate. The material of the reinforced top plate is the same as that of the toothless plate. A pile leg insertion hole is opened on the reinforced top plate.

[0022] In one embodiment, before the step of making the tire frame, the method further comprises:

[0023] A ground sample line is drawn on the ground below the tire frame, wherein the ground sample line includes the cross center line, the outer edge contour line, and the toothless plate positioning line.

[0024] In one embodiment, in the step of prefabricating the assembly, the step of prefabricating the base assembly on the tire frame includes:

[0025] Align the center of the bottom plate assembly with the cross center line;

[0026] Make the outer peripheral edge of the bottom plate assembly coincide with the outer edge contour line;

[0027] Align the center of the toothless plate installation area of ​​the base plate assembly with the toothless plate positioning line;

[0028] The bottom plate assembly is leveled, and the gap between the bottom plate assembly and the tire frame, as well as the gap between each bottom plate panel in the bottom plate assembly, is controlled. After the bottom plate assembly is positioned, welding is carried out.

[0029] In one embodiment, the outer edge contour of the central area where the central top plate assembly is located is triangular, the number of large vertical plate assemblies is three, and the three large vertical plate assemblies are vertically arranged on the bottom plate assembly corresponding to the three sides of the central area respectively.

[0030] It can be seen from the above technical solution that the present invention has at least the following advantages and positive effects:

[0031] The pile shoe construction method provided by the present invention can distinguish the pile shoes according to different assemblies when sorting parts by dividing them into multiple independent structural assemblies, which is convenient for production planners to cut the parts for sorting and distribution, thereby greatly improving the parts distribution and sorting efficiency and saving the parts sorting period.

[0032] Moreover, after the pile shoe is divided into multiple structural assemblies, the weight of each assembly becomes smaller, and they can be distributed in different areas for simultaneous construction, avoiding the phenomenon of parts crowding and crane resource shortage, thereby effectively reducing the difficulty of parts picking during construction, balancing resource utilization, greatly shortening the construction period, and reducing construction costs.

[0033] In addition, the top plate and internal structure of the pile shoe are divided into a central top plate assembly and several peripheral top plate assemblies, which can be prefabricated with their respective top plates as the base, avoiding a large number of upturned face welds and greatly reducing construction difficulty and labor intensity.

[0034] The pile shoe construction method provided by the present invention can greatly improve the efficiency of parts distribution and sorting, save parts sorting time, balance site resources, reduce construction difficulty, shorten construction time, and improve construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic structural diagram of a pile shoe manufactured using the pile shoe construction method according to an embodiment of the present invention.

[0036] Figure 2 It is a flow chart of a method for constructing a pile shoe according to an embodiment of the present invention.

[0037] Figure 3 It is a schematic diagram of a ground sample line in a construction method according to an embodiment of the present invention.

[0038] Figure 4 It is a schematic diagram of building a tire frame in the construction method of an embodiment of the present invention.

[0039] Figure 5 It is a schematic diagram of manufacturing a bottom plate assembly in a construction method according to an embodiment of the present invention.

[0040] Figure 6 It is a schematic diagram of the division of the pile shoe top plate in the construction method of an embodiment of the present invention.

[0041] Figure 7 It is a schematic diagram of manufacturing a central top plate assembly in a construction method according to an embodiment of the present invention.

[0042] Figure 8 It is a schematic diagram of manufacturing one of the peripheral top plate assemblies in the construction method of an embodiment of the present invention.

[0043] Fig. 9It is a schematic diagram of manufacturing a pontoon assembly in a construction method according to an embodiment of the present invention.

[0044] Fig.10 It is a schematic diagram of manufacturing a large vertical panel assembly in the construction method of an embodiment of the present invention.

[0045] Fig.11 It is a schematic diagram of the closing and installation of various assemblies in the construction method of an embodiment of the present invention.

[0046] The following are the descriptions of the reference numerals:

[0047] 10- ground sample line; 101- cross center line; 102- outer edge contour line; 103- toothless plate positioning line;

[0048] 20-tire frame;

[0049] 30-pile shoe; 301-pile shoe bottom plate; 302-pile shoe top plate; 303-central radiation bulkhead; 304-upper buoyancy box;

[0050] 100-bottom plate assembly; 110-central hexagonal bottom plate; 120-peripheral bottom plate; 130-reinforced

[0051] Base plate;

[0052] 200-center top plate assembly; 210-center top plate; 220-center internal component;

[0053] 300- pontoon assembly; 310- pontoon top plate; 320- pontoon internal components;

[0054] 400-large vertical plate assembly; 410-large vertical plate; 420-reinforcement member;

[0055] 500-peripheral top plate assembly; 510-peripheral top plate; 511-reinforced top plate; 512-pile leg insertion hole; 520-peripheral internal component. DETAILED DESCRIPTION

[0056] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially used for illustration purposes rather than for limiting the present invention.

[0057] In the description of the present application, it should be understood that in the embodiments shown in the drawings, the indications of directions or positional relationships (such as up, down, left, right, front and back, etc.) are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the descriptions of the positions of these elements change, the indications of these directions also change accordingly.

[0058] 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. Thus, 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 two or more, unless otherwise clearly and specifically defined.

[0059] The method for constructing pile shoes of the present invention is described by taking the manufacturing of pile shoes for wind turbine installation vessels as an example. It is easy for those skilled in the art to understand that in order to apply the method for constructing pile shoes to the manufacturing of pile shoes for other types of offshore platforms, various modifications, additions, substitutions, deletions or other changes are made to the specific embodiments described below, and these changes are still within the scope of the principle of the method for constructing pile shoes proposed by the present invention.

[0060] Generally, a wind turbine installation vessel has four pile shoes, which are distributed at the four corners of the platform. The pile shoes are connected to the bottom of the truss pile legs, and the pile legs are connected to the main hull through gears and guide structures. Among them, a single pile shoe structure of a wind turbine installation vessel can weigh about 482 tons, is 16,500 mm long, 15,700 mm wide, and 8,200 mm high.

[0061] See also Figure 1 As shown, in the embodiment of the present invention, a single pile shoe 30 is mainly composed of a pile shoe bottom plate 301, a pile shoe top plate 302, a central radiation bulkhead 303, a central tube, internally arranged longitudinal and transverse partitions and a buoyancy box 304, and its structure is symmetrical.

[0062] See also Figure 2 As shown, the method for constructing the pile shoe 30 according to the embodiment of the present invention comprises the following steps:

[0063] S10, draw a ground sample line 10 on the ground below the tire frame 20. Figure 3 As shown, the ground sample line 10 includes a cross center line 101 , an outer edge contour line 102 , and a toothless plate positioning line 103 .

[0064] When marking the ground sample line 10, care must be taken to avoid the tire frame 20 area to prevent the reference line from being interfered with after the pile shoe 30 is put on the tire. The marking accuracy of the ground sample line 10 is required to be ±1mm, with a maximum of ±2mm.

[0065] S20, manufacturing a tire frame 20. Specifically, as Figure 4 As shown, the tire frame 20 is composed of four angle steel tire frames, leaving a cross center line 101. Before the construction of the pile shoe 30, the accuracy and integrity of the tire frame 20 need to be checked, and the accuracy of the tire frame 20 is required to be ±3mm. The tire frame 20 needs to be inspected for accuracy, and only after it is confirmed to meet the requirements can the tire frame 20 be put on for construction.

[0066] S30, dividing the pile shoe 30: dividing the pile shoe 30 into a plurality of structural assemblies, wherein the plurality of structural assemblies include a bottom plate assembly 100, a central top plate assembly 200, a pontoon assembly 300, a plurality of large vertical plate assemblies 400 and a plurality of peripheral top plate assemblies 500.

[0067] It should be noted that the bottom plate assembly 100 in the embodiment of the present application refers to Figure 1 The pile shoe bottom plate 301 of a single pile shoe 30 is shown. In the embodiment of the present application, Figure 5 As shown, the bottom plate assembly 100 is assembled from a plurality of bottom plate panels. For example, the plurality of bottom plate panels include a central hexagonal bottom plate panel 110 and six peripheral bottom plate panels 120. Part of the peripheral bottom plate panels 120 are provided with a toothless plate installation area, which is mainly used for the installation of the pile shoe bottom plate 301 and the pile leg toothless plate. It is worth noting that in the art, the toothless plate refers to the part of the pile leg inserted into the pile shoe.

[0068] Various structural lines need to be pre-marked on the bottom plate assembly 100, such as the contour line of the non-toothed plate installation area, the structural lines of each bulkhead, longitudinal and transverse partition, etc. The assembly process of the bottom plate assembly 100 will be described in detail in the assembly prefabrication steps below.

[0069] It should be noted that the central top plate assembly 200 and the plurality of peripheral top plate assemblies 500 in the embodiment of the present application refer to Figure 1 The pile shoe top plate 302, part of the central tube and the internally arranged longitudinal and transverse partitions of the single pile shoe 30 are shown. Among them, part of the central tube and the internally arranged longitudinal and transverse partitions are referred to as the internal structure of the pile shoe in this application.

[0070] For example, Figure 6 As shown, in the present application, the central top plate assembly 200 and the plurality of peripheral top plate assemblies 500 are formed by dividing the pile shoe top plate 302 and the internal structure of the pile shoe with the top plate seam as the dividing line. Specifically, the pile shoe top plate 302 and the internal structure of the pile shoe can be divided into a central top plate assembly 200 and six peripheral top plate assemblies 500 with the top plate seam as the dividing line. For ease of explanation, in the present embodiment, the six peripheral top plate assemblies 500 are respectively represented as 500a, 500b, 500c, 500d, 500e and 500f.

[0071] In this embodiment, see Figure 7 As shown, the central roof assembly 200 is assembled from a central roof 210 and a central internal component 220 thereon. The assembly process of the central roof assembly 200 will be described in detail in the assembly prefabrication steps hereinafter.

[0072] In this embodiment, see Figure 8 As shown, each peripheral top plate assembly 500 is assembled from a peripheral top plate 510 and a peripheral internal component 520 thereon. The assembly process of each peripheral top plate assembly 500 will be described in detail in the assembly prefabrication step below.

[0073] It can be understood that in the embodiment of the present application, the central top plate 210 of a central top plate assembly 200 and the peripheral top plates 510 of six peripheral top plate assemblies 500 together constitute Figure 1 The pile shoe top plate 302 of a single pile shoe 30 is shown. Part of the peripheral top plate assembly 500 is provided with a toothless plate connection area, which is mainly used for the installation of the pile shoe top plate 302 and the internal structure of the pile shoe and the toothless plate of the pile leg. Figure 6 As shown, toothless plate connection areas are respectively provided on the peripheral top plate assemblies 500b, 500d, and 500f.

[0074] The central top plate 210 and each peripheral top plate 510 need to be marked with various structural lines in advance, such as the structural lines of each bulkhead, longitudinal and transverse partitions, and the contour lines of the non-toothed plate connection area on some peripheral top plates 510. The central internal component 220 of a central top plate assembly 200 and the peripheral internal components 520 of six peripheral top plate assemblies 500 together constitute Figure 1 The partial central tube of the single pile shoe 30 and the longitudinal and transverse partitions arranged inside constitute the internal structure of the pile shoe arranged between the pile shoe bottom plate 301 and the pile shoe top plate 302.

[0075] It should be noted that the buoyancy tank assembly 300 in the embodiment of the present application refers to Figure 1 The upper buoyancy box 304 and part of the central pipe of a single pile shoe 30 are shown. Fig. 9 As shown, the pontoon assembly 300 is assembled from a pontoon top plate 310 and pontoon internal components 320 thereon. The assembly process of the pontoon assembly 300 will be described in detail in the assembly prefabrication steps hereinafter.

[0076] In the division of each assembly of the present application, the central internal component 220 of the central top plate assembly 200 includes a portion of the central tube. The pontoon internal component 320 of the pontoon assembly 300 includes a portion of the central tube. The portion of the central tube of the central top plate assembly 200 and the portion of the central tube of the pontoon assembly 300 are divided by the pile shoe top plate 302 as the dividing line. The portion of the central tube of the central top plate assembly 200 and the portion of the central tube of the pontoon assembly 300 together constitute Figure 1 The central pipe of a single spud 30 is shown.

[0077] It should be noted that the plurality of large vertical board assemblies 400 in the embodiment of the present application refers to Figure 1 The central radial bulkhead 303 of the single pile shoe 30 is shown. Fig.10 As shown, each large vertical board assembly 400 is assembled from a large vertical board 410 and a reinforcing member 420 thereon. The manufacturing process of each large vertical board assembly 400 will be described in detail in the assembly prefabrication step below.

[0078] See also Figure 1 , Figure 6 and Figure 7 As shown, in one embodiment, the outer edge contour of the central area where the central roof assembly 200 is located is triangular. For example, the outer edge contour of the central area where the central roof assembly 200 is located can be an equilateral triangle.

[0079] The outer edge contour of the pontoon assembly 300 corresponds to the central area where the central roof assembly 200 is located, and the outer edge contour of the pontoon assembly 300 is also triangular. For example, the outer edge contour of the pontoon assembly 300 can be an equilateral triangle.

[0080] See also Figure 1 As shown, in the embodiment of the present application, the number of the large vertical panel assemblies 400 can be three, and the three large vertical panel assemblies 400 are respectively vertically arranged on the bottom plate assembly 100 corresponding to the three sides of the central area.

[0081] In the embodiment of the present application, the pile shoe 30 is divided into a bottom plate assembly 100, a central top plate assembly 200, a pontoon assembly 300, three large vertical plate assemblies 400 and six peripheral top plate assemblies 500. However, the present application is not limited thereto, and in other embodiments, the division of the pile shoe 30 may also have other changes. For example, the pile shoe 30 may be divided into a bottom plate assembly 100, one or two central top plate assemblies 200, one or two pontoon assemblies 300, four large vertical plate assemblies 400 and six or eight peripheral top plate assemblies 500, depending on the specific situation.

[0082] See also Figure 2The construction method of the pile shoe 30 of the embodiment of the present invention further includes S40, prefabrication of assemblies: prefabricating a bottom plate assembly 100, a central top plate assembly 200, a pontoon assembly 300, a plurality of large vertical plate assemblies 400 and a plurality of peripheral top plate assemblies 500 respectively.

[0083] The base plate assembly 100 is prefabricated on the tire frame 20. Figure 3 and Figure 5 As shown, when the bottom plate assembly 100 is prefabricated on the tire frame 20, the central hexagonal bottom plate panel 110 of the bottom plate assembly 100 can be positioned first, so that the center of the bottom plate assembly 100 is aligned with the cross center line 101. Then, six peripheral bottom plate panels 120 are positioned and laid, so that the peripheral edge of the bottom plate assembly 100 coincides with the outer edge contour line 102. And the center of the toothless plate installation area of ​​the bottom plate assembly 100 is aligned with the toothless plate positioning line 103.

[0084] The base plate assembly 100 is leveled to control the overall levelness within ±2 mm.

[0085] The gap between the bottom plate assembly 100 and the tire frame 20 is controlled. The gap between each bottom plate panel in the bottom plate assembly 100 is also controlled. For example, the gap between each bottom plate panel is controlled to be ≤1 mm.

[0086] After the bottom plate assembly 100 is positioned and qualified, positioning welding is performed according to the welding process requirements, and the non-structural surface is fixed with a horse plate and the tire is sealed. Qualified welders are required to perform welding according to the relevant requirements of the welding process. The welding sequence of the bottom plate assembly 100 is to radiate welding from the center to the surroundings, so as to effectively prevent welding deformation.

[0087] See also Figure 5 In one embodiment, before the tire frame is prefabricated on the bottom plate assembly 100, the toothless plate installation area of ​​the bottom plate assembly 100 is replaced. That is, before the tire frame is positioned and installed on each bottom plate assembly 100, the toothless plate installation area of ​​part of the peripheral bottom plate assembly 120 needs to be replaced.

[0088] Specifically, the bottom plate of the bottom plate assembly 100 may be cut along the contour line of the non-toothed plate installation area. Figure 5 As shown, among the six peripheral bottom plate panels 120, three of the peripheral bottom plate panels 120 are preset with toothless plate installation areas. The three peripheral bottom plate panels 120 can be cut along the contour lines of the toothless plate installation areas.

[0089] Then, a reinforced bottom plate 130 is welded in the toothless plate installation area. The thickness of the reinforced bottom plate 130 is greater than the thickness of the original bottom plate. For example, the thickness of the reinforced bottom plate 130 can be 60 mm. The original bottom plate thickness is 40 mm. In this embodiment, by thickening and replacing the toothless plate installation area of ​​the bottom plate assembly 100, it is possible to avoid performing densification treatment on the internal structure of the pile shoe during the closing process of the pile leg and the pile shoe, so that the pile shoe can meet the design strength requirements and meet the pile shoe strength requirements when the hull is raised and lowered. In other words, the bottom plate can be partially replaced without changing the internal structure of the pile shoe, which is also conducive to simplifying the manufacturing process.

[0090] Preferably, when the reinforcing base plate 130 is welded to the toothless plate installation area of ​​the peripheral base plate assembly 120, the reinforcing base plate 130 can protrude from the peripheral base plate assembly 120 around it toward the outside of the pile shoe. There is no need to change the original size of the internal structure of the pile shoe, which is conducive to simplifying the manufacturing process.

[0091] Preferably, the material of the reinforced bottom plate 130 is the same as that of the toothless plate. For example, the material of the reinforced bottom plate 130 can be E690 steel plate, which is the same as that of the toothless plate. The original bottom plate can be E550 steel plate. In this embodiment, the reinforced bottom plate 130 is made of the same material as that of the toothless plate, which can ensure the strength of the pile leg and the pile shoe when they are closed together, and effectively avoid the problem of welding crack defects that are easy to occur due to a large difference in the plate grade when the pile leg and the pile shoe are closed.

[0092] It can be understood that the center of each reinforced bottom plate 130 is the direct welding area between the leg toothless plate and the pile shoe bottom plate 301. After the leg is inserted into the pile shoe, its bottom abuts against the pile shoe bottom plate 301. Preferably, the area of ​​the reinforced bottom plate 130 can be much larger than the area of ​​the welding point between the toothless plate and the pile shoe bottom plate 301, so as to ensure the welding strength and quality.

[0093] In the present application, except for the bottom plate assembly 100, the prefabrication of the other assemblies can be distributed in different areas and carried out independently. The other assemblies can be prefabricated simultaneously or sequentially, depending on the specific situation.

[0094] See also Figure 7 In one embodiment, the central top plate assembly 200 is made by using the central top plate 210 as a base plate and installing the central internal component 220 on the central top plate 210. The central top plate 210 can be made by splicing a plurality of sub-plates, or the central top plate 210 can be a whole plate. The central internal component 220 includes but is not limited to a central tube, a bulkhead, a T-shaped bar, and bulk parts.

[0095] During the welding and assembly process of the central internal component 220 and the central top plate 210, the accuracy of each structure needs to be strictly controlled, for example, the positioning accuracy of the bulkhead and T-shaped material and the verticality of the central tube need to be strictly controlled. The bulkhead and T-shaped material can be symmetrically welded from the center to the surroundings according to the welding process to form the central top plate assembly 200. After the welding inspection of the central top plate assembly 200 is completed, it is turned over and assembled on the bottom plate assembly 100. The process of assembling the central top plate assembly 200 to the bottom plate assembly 100 will be described in detail in the assembly assembly steps below.

[0096] See also Fig. 9 In one embodiment, the pontoon assembly 300 is made of a pontoon top plate 310 as a base plate, and a pontoon internal component 320 is installed on the pontoon top plate 310. The pontoon top plate 310 can be made of a plurality of sub-plates, or the pontoon top plate 310 can be a whole plate. The pontoon internal component 320 includes but is not limited to a central tube, a bulkhead, a T-shaped bar, and bulk parts.

[0097] During the welding and assembly process of the pontoon internal components 320 and the pontoon top plate 310, the accuracy of each structure needs to be strictly controlled, for example, the positioning accuracy of the bulkhead and T-shaped material and the verticality of the center tube need to be strictly controlled. The bulkhead and T-shaped material can be symmetrically welded from the center to the surroundings according to the welding process to form the pontoon assembly 300. After the welding inspection of the pontoon assembly 300 is completed, it is turned over and assembled on the center top plate assembly 200. The process of assembling the pontoon assembly 300 to the center top plate assembly 200 will be described in detail in the assembly assembly steps below.

[0098] See also Figure 8 In one embodiment, each peripheral top plate assembly 500 is made of a peripheral top plate 510 as a base plate, and a peripheral internal component 520 is installed on the peripheral top plate 510. The peripheral top plate 510 can be made of a plurality of sub-plates, or the peripheral top plate 510 can be a whole plate. The peripheral internal component 520 includes but is not limited to bulkheads, T-shaped bars, peripheral walls, and bulk parts.

[0099] It should be noted that Figure 8 FIG. 5 is a schematic diagram showing the manufacturing process of one of the peripheral top plate assemblies 500a. Figure 8 As shown, the peripheral top plate assembly 500a is made by welding the peripheral top plate 510 with the internal component 520. It can be understood that the manufacturing process of the other peripheral top plate assemblies 500b, 500c, 500d, 500e and 500f is similar to that of the peripheral top plate assembly 500a, and will not be repeated here.

[0100] In the process of welding and assembling the peripheral internal component 520 and the peripheral top plate 510, the accuracy of each structure needs to be strictly controlled, for example, the positioning accuracy of the bulkhead, the peripheral wall and the T-shaped material needs to be strictly controlled. The bulkhead and the T-shaped material can be symmetrically welded from the center to the surrounding according to the welding process to form the peripheral top plate assembly 500. After the welding inspection of each peripheral top plate assembly 500 is completed, it is turned over and assembled on the bottom plate assembly 100. The process of assembling each peripheral top plate assembly 500 to the bottom plate assembly 100 will be described in detail in the assembly assembly steps below.

[0101] See also Figure 1 and Figure 6 In one embodiment, a portion of the peripheral top plate assembly 500 is provided with a non-toothed plate connection area. In the assembly prefabrication step, the non-toothed plate connection area on the peripheral top plate 510 of the peripheral top plate assembly 500 needs to be replaced. Among them, each non-toothed plate connection area is arranged in a one-to-one correspondence with the toothed plate installation area on the bottom plate assembly 100, that is, the center of the non-toothed plate connection area can be relatively coincident with the center of the corresponding toothed plate installation area.

[0102] For example, Figure 6 As shown, the outer top plate assemblies 500b, 500d, and 500f are respectively provided with toothless plate connection areas. During the prefabrication process of the outer top plate assembly 500b, the toothless plate connection area of ​​the outer top plate 510 needs to be replaced first, and then the inner component 520 is installed on the outer top plate 510 after the replacement. Among them, when the inner component 520 is installed on the outer top plate 510, it is necessary to reserve a channel for inserting the toothless plate of the pile leg. It can be understood that the prefabrication process of the outer top plate assemblies 500d and 500f is similar to the prefabrication process of the outer top plate assembly 500b, and will not be repeated here.

[0103] Specifically, when replacing the toothless plate connection area on the peripheral top plate 510, the peripheral top plate 510 can be cut along the contour line of the toothless plate connection area. Then, the reinforced top plate 511 is welded in the toothless plate connection area. Among them, the thickness of the reinforced top plate 511 is greater than the thickness of the original peripheral top plate 510. In this embodiment, by thickening and replacing the toothless plate connection area of ​​the peripheral top plate assembly 500, it is possible to make the pile shoe meet the design strength requirements without performing encryption processing on the internal structure of the pile shoe, and meet the pile shoe strength requirements when the hull is raised and lowered.

[0104] Preferably, when the reinforcing top plate 511 is welded to the toothless plate connection area of ​​the peripheral top plate 510, the reinforcing top plate 511 can protrude from the peripheral top plate 510 around it toward the outside of the pile shoe, thereby eliminating the need to change the original size of the internal structure of the pile shoe, which is conducive to simplifying the manufacturing process.

[0105] Preferably, the material of the reinforced top plate 511 is the same as that of the toothless plate. For example, the material of the reinforced top plate 511 can be E690 steel plate, which is the same as that of the toothless plate. In this embodiment, the reinforced top plate 511 is made of the same material as that of the toothless plate, which can ensure the strength of the pile leg and the pile shoe when they are closed, and effectively avoid welding defects when the pile shoe and the pile leg are welded.

[0106] like Figure 1 and Figure 6 As shown, a pile leg insertion hole 512 may be provided on the reinforced top plate 511. The pile leg insertion hole 512 is used to insert the pile leg when the pile shoe and the pile leg are closed, so that the pile leg can be abutted against the pile shoe bottom plate 301 after being inserted into the pile shoe, thereby facilitating direct welding of the pile leg toothless plate and the pile shoe bottom plate 301.

[0107] See also Fig.10 In one embodiment, the large vertical board assembly 400 is made of a large vertical board 410 as a base plate, and a reinforcing member 420 is installed on the large vertical board 410. The large vertical board 410 can be spliced ​​by a plurality of sub-boards, or the large vertical board 410 can be a whole board. The reinforcing member 420 includes but is not limited to flat steel, T-shaped material, etc.

[0108] During the welding and assembly process of the reinforcing member 420 and the large vertical plate 410, the precision of each structure must be strictly controlled. After the large vertical plate assembly 400 is welded and inspected, it is vertically assembled to the bottom plate assembly 100. The process of assembling the large vertical plate assembly 400 to the bottom plate assembly 100 will be described in detail in the assembly assembly steps below.

[0109] In this application, the finishing accuracy of each assembly needs to be strictly controlled, and the accuracy measurement needs to be continuously carried out during the welding process and after the prefabrication is completed. The accuracy measurement mainly includes the angle between the top plate and the bottom plate, the internal structural angles, the assembly gap of each structure and the overall dimensions, the flatness of the bottom end of the structure, etc. The measurement position requires a deviation of ±1mm. According to the measurement results, the DACS-OFFICE software is used to simulate the loading of each assembly. According to the simulated loading results, the excess cutting or meat growth is carried out, and the accuracy of each product is strictly controlled to ensure that the subsequent closing is smooth and the accuracy is qualified.

[0110] In the present application, after the prefabrication of each assembly is completed, a transport vehicle or a crane can be used to transport the assemblies constructed at different locations to the tire frame 20 for closing and installing the assemblies.

[0111] See also Figure 2The construction method of the pile shoe 30 of the embodiment of the present invention also includes S50, assembly assembly: after the bottom plate assembly 100 and the tire frame 20 are installed, the central top plate assembly 200 is installed on the bottom plate assembly 100, and then the pontoon assembly 300 is installed on the central top plate assembly 200, and then each large vertical plate assembly 400 is installed, and finally each peripheral top plate assembly 500 is installed.

[0112] See also Fig.11 As shown, the central top plate assembly 200 can be turned over by a crane and hoisted above the bottom plate assembly 100. The central top plate assembly 200 is positioned according to the structural installation line on the pile shoe bottom plate 301, the pressing line accuracy and the verticality of the central pipe are controlled, and the central top plate assembly 200 and the bottom plate assembly 100 are symmetrically welded according to the welding process.

[0113] Subsequently, the pontoon assembly 300 is turned over by a crane and hoisted above the central roof assembly 200. The pontoon assembly 300 is positioned according to the structural installation line on the pile shoe top plate 302, the pressing line accuracy and the verticality of the central pipe are controlled, and the pontoon assembly 300 and the central roof assembly 200 are symmetrically welded according to the welding process.

[0114] Then, the three large vertical plate assemblies 400 are hoisted above the bottom plate assembly 100 by a crane. The three large vertical plate assemblies 400 are positioned and installed respectively, and the pressure line deviation and assembly gap are paid attention to, and the position and verticality of the large vertical plate assemblies 400 are controlled. After the accuracy inspection is qualified, the large vertical plate assemblies 400 are positioned and welded.

[0115] Finally, the six peripheral top plate assemblies 500 are turned over and hoisted to the top of the bottom plate assembly 100 by a crane. Each peripheral top plate assembly 500 is positioned and installed respectively, paying attention to the pressure line deviation and assembly gap. After the overall assembly is completed, it is welded symmetrically from the center to both sides.

[0116] In the embodiment of the present application, each peripheral top plate assembly 500 is sequentially installed counterclockwise or clockwise around the central area where the central top plate assembly 200 is located. Figure 6 As shown, the six peripheral roof assembly bodies 500 are sequentially installed counterclockwise around the central area where the central roof assembly body 200 is located. Specifically, the six peripheral roof assembly bodies 500 can be arranged in the order of 500a→500b→500c→500d→

[0117] The assembly is performed in the order of 500e→500f. During assembly, attention is paid to the pressure line deviation and assembly clearance. After the accuracy inspection is qualified, each peripheral top plate assembly 500 is positioned and welded.

[0118] In the present application, by designing the assembly sequence of each peripheral top plate assembly 500, it is possible to effectively avoid the phenomenon that part of the top plate will press on other structures when closing, avoid inserting closing, and thus greatly reduce the difficulty of assembly.

[0119] After each assembly is assembled and the positioning welding is performed, it is necessary to conduct pre-welding inspection of the overall pile shoe 30. After the pre-welding inspection is qualified, the pile shoe 30 is symmetrically welded from the center to the periphery according to a given welding process.

[0120] After the overall welding of the pile shoe 30 is completed, the weld inspection and tightness test can be carried out according to the non-destructive testing plan and the segmented pre-tightness test diagram. If defects are found, they can be repaired according to the corresponding welding repair process.

[0121] After the construction of pile shoe 30 is completed, submit an application for precision inspection, and the precision control personnel will measure the precision of pile shoe 30 and generate a "Precision Measurement Report" for archiving. Draw a cross center line on the top and bottom plates of pile shoe 30, and make a mark on the seabed, which will serve as the reference line for the closing of the pile shoe 30 segment slipway.

[0122] At this point, the construction of a pile shoe 30 of the wind power installation vessel is completed and can be subsequently painted and closed.

[0123] Since the pile shoe 30 has a large number of parts and many similar parts, in the construction method of the pile shoe 30 of the present invention, by dividing the pile shoe 30 into multiple independent structural assemblies, the parts can be distinguished according to different assemblies during sorting, which is convenient for the material preparation center MPC (Material Preparation Center) to perform some steel plate pretreatment, steel plate cutting, and groove processing work corresponding to each structural assembly, thereby facilitating the rapid sorting, manufacturing, and distribution of parts. At the same time, since the pile shoe 30 is heavy, after being divided into multiple assemblies, the weight of each assembly becomes smaller, and it can be distributed in different areas for simultaneous construction, avoiding the phenomenon of parts piling up and resource shortage, and can effectively reduce the difficulty of picking parts during the construction period, balance resource utilization, and thus shorten the construction period.

[0124] In the construction method of the pile shoe 30 of the present invention, each outer top plate assembly 500 is prefabricated by reverse manufacturing with its own top plate as the base, thus avoiding a large number of upward face welds and greatly reducing labor intensity; and the prefabrication of each assembly can be carried out simultaneously and arranged in multiple sections. After the prefabrication of each assembly is completed, it can be transported to the segmented large assembly site by a transport vehicle for assembly, which can greatly reduce the segmented construction time, shorten the construction period, solve the problem of difficult picking of parts from a cluster, and alleviate the problem of tight construction resources when building in the same area.

[0125] The construction method of the pile shoe 30 of the present invention effectively solves the problems of tight construction site for the pile shoe 30 of the self-elevating wind power installation ship, difficulty in picking and distributing parts between sections of the same structure, and difficulty in picking parts during the construction period due to the clustering after distribution, which greatly improves the efficiency of parts distribution and sorting, and saves the time for parts sorting. In addition, almost all the overhead welding seams in the welding process of the pile shoe 30 are changed to flat welding, which reduces the labor intensity and avoids the turning over of the heavy weight structure. According to practice, the construction efficiency of the pile shoe 30 with the same structural form and larger tonnage is improved by about 30% compared with the previous one.

[0126] The above embodiments are merely exemplary descriptions of the structures. The structures in the embodiments are not fixed combination structures. In the absence of structural conflicts, the structures in multiple embodiments can be used in any combination.

[0127] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present invention can be embodied in a variety of forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A method for constructing a pile shoe, characterized in that: The following steps are involved: Make tire frame; Pile shoe division: the pile shoe is divided into a plurality of structural assemblies, wherein the plurality of structural assemblies include a bottom plate assembly, a central top plate assembly, a pontoon assembly, a plurality of large vertical plate assemblies and a plurality of peripheral top plate assemblies; Assembly prefabrication: prefabricate the bottom plate assembly, the central top plate assembly, the pontoon assembly, a plurality of the large vertical plate assemblies and a plurality of the peripheral top plate assemblies, wherein the bottom plate assembly is prefabricated on the tire frame, and the prefabrication of the remaining assemblies is carried out independently; Assembly of the assembly: After the installation of the bottom plate assembly and the tire frame is completed, the central top plate assembly is installed on the bottom plate assembly, and then the pontoon assembly is installed on the central top plate assembly, and then each of the large vertical plate assemblies is installed, and finally each of the peripheral top plate assemblies is installed.

2. The method for constructing a pile shoe according to claim 1, characterized in that: The central top plate assembly and the plurality of peripheral top plate assemblies are formed by dividing the pile shoe top plate and the internal structure of the pile shoe with the top plate seam as the dividing line.

3. The method for constructing a pile shoe according to claim 1 or 2, characterized in that: The number of the central top plate assembly is one, and the number of the peripheral top plate assemblies is six.

4. The method for constructing a pile shoe according to claim 1, characterized in that: In the step of assembling the assembly, each of the peripheral top plate assemblies is installed in sequence in a counterclockwise or clockwise direction around the central area where the central top plate assembly is located.

5. The method for constructing a pile shoe according to claim 1, characterized in that: The central top plate assembly is made by using the central top plate as a base plate and installing the central internal components on the central top plate. After the welding inspection of the central top plate assembly is completed, it is turned over and assembled on the bottom plate assembly.

6. The method for constructing a pile shoe according to claim 1, characterized in that: The pontoon assembly is made of a pontoon top plate as a base plate, and internal components of the pontoon are installed on the pontoon top plate. After the welding inspection of the pontoon assembly is completed, it is turned over and assembled on the central top plate assembly.

7. The method for constructing a pile shoe according to claim 1, characterized in that: Each of the outer top plate assemblies is made of an outer top plate as a base plate, and outer internal components are installed on the outer top plate. After the welding inspection of each of the outer top plate assemblies is completed, they are turned over and assembled on the bottom plate assembly.

8. The method for constructing a pile shoe according to claim 1, characterized in that: The bottom plate assembly is provided with a toothless plate installation area. In the step of prefabrication of the assembly, before the tire frame on the bottom plate assembly is prefabricated, the toothless plate installation area of ​​the bottom plate assembly is first replaced with a plate: Cutting the bottom plate of the bottom plate assembly along the contour line of the toothless plate installation area; A reinforcing bottom plate is welded in the toothless plate installation area, the thickness of the reinforcing bottom plate is greater than the thickness of the original bottom plate, and the material of the reinforcing bottom plate is the same as that of the toothless plate.

9. The method for constructing a pile shoe according to claim 1, characterized in that: Some of the peripheral top plate assemblies are provided with a toothless plate connection area. In the step of prefabrication of the assembly, the toothless plate connection area on the peripheral top plate of the peripheral top plate assembly is first replaced: Cutting the outer top plate of the outer top plate assembly along the contour line of the toothless plate connection area; A reinforced top plate is welded in the connection area of ​​the toothless plate. The thickness of the reinforced top plate is greater than the thickness of the original outer top plate. The material of the reinforced top plate is the same as that of the toothless plate. A pile leg insertion hole is opened on the reinforced top plate.

10. The method for constructing a pile shoe according to claim 1, characterized in that: Before making the tire frame, it also includes: A ground sample line is drawn on the ground below the tire frame, wherein the ground sample line includes the cross center line, the outer edge contour line, and the toothless plate positioning line.

11. The method for constructing a pile shoe according to claim 10, characterized in that: In the step of prefabricating the assembly, the step of prefabricating the base plate assembly on the tire frame includes: Align the center of the base plate assembly with the cross center line; Make the outer peripheral edge of the bottom plate assembly coincide with the outer edge contour line; Align the center of the toothless plate installation area of ​​the base plate assembly with the toothless plate positioning line; The bottom plate assembly is leveled, and the gap between the bottom plate assembly and the tire frame, as well as the gap between each bottom plate panel in the bottom plate assembly, is controlled. After the bottom plate assembly is positioned, welding is performed.

12. The method for constructing a pile shoe according to claim 1, characterized in that: The outer edge contour of the central area where the central top plate assembly is located is triangular, and the number of the large vertical plate assemblies is three, and the three large vertical plate assemblies are vertically arranged on the bottom plate assembly corresponding to the three sides of the central area respectively.

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