A method of welding a scissors brace

Abstract

The present application relates to the technical field of engineering construction structure, and particularly relates to a scissors support welding auxiliary method, which solves the problem of insufficient consistency of the scissors support in the existing jacket, the jacket is divided into a lower segment body, a middle segment body and an upper segment body from bottom to top in the height direction, and the corresponding lower segment surface, middle segment surface and upper segment surface of the jacket are defined, the lower segment surface, the middle segment surface and the upper segment surface are all isosceles trapezoidal structures, and the areas decrease successively, and the construction comprises the following steps: S1, welding the lower segment body; S2, welding the middle segment body: within the range of the middle segment surface, the two ends of the welded pipe are cut and formed, and each pipe is placed in an "X" shape, and the centers of the pipes are cross-linked; each pipe is positioned through a bracket assembly; the bracket assembly comprises two rectangular brackets, at least two connecting beams connecting the two rectangular brackets, and a plurality of support plate pieces arranged on the rectangular bracket and used for supporting each pipe; and S3, welding the upper segment body.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engineering construction structure, and particularly relates to a method for assisting welding of a scissors support. BACKGROUND

[0002] Offshore wind power is an important field of renewable energy development in recent years. In construction, the offshore wind power jacket is an important part of the offshore wind farm, mainly used for supporting and fixing the foundation structure of the wind turbine generator, and is the connecting section of the underwater pile foundation and the upper tower of the offshore wind turbine tower. It is mainly used for offshore wind farms with large single machine capacity, deep water level and poor geological conditions. The jacket can support the weight of the wind turbine, booster station or upper structure, transfer the load from the seabed, ensure stability in strong wind, rough sea and corrosive seawater, and has good sealing performance, stable structure, high strength and other characteristics in structure.

[0003] In the prior art, as shown in Chinese patent application CN 119102247 A, the technical solution shown therein is a jacket foundation and a jacket foundation construction method. The jacket structure includes a main frame body, a support structure and the like. The support structure includes a plurality of support rod groups arranged in the height direction, the support rod groups are connected with the first connecting parts of the two side legs, the first connecting parts have first pouring spaces inside, and the first pouring spaces are filled with grouting material; the leg further includes two second connecting parts, the two second connecting parts are arranged on the topmost connecting section and the bottommost connecting section respectively, and the support rod group further includes a third connecting part and two support pieces arranged in cross. The end of the support piece is connected with the first connecting part or the second connecting part. The two support pieces are connected through the third connecting part, the third connecting part has a third pouring space, and the third pouring space is filled with grouting material.

[0004] In this structure, the installation structure between the first connecting part, the second connecting part and the third connecting part located in the center cannot guarantee that the scissors support is located in the center of the jacket, and there are multiple levels of scissors supports in one jacket according to different positions. This state is limited by welding construction, pipe precision and manual factors, and obviously cannot guarantee the structural consistency of the jacket. SUMMARY

[0005] Therefore, the present application provides a method for assisting welding of a scissors support, which solves the problem of insufficient consistency of the scissors support in the existing jacket.

[0006] To achieve the above-mentioned purpose, the present application is realized by the following technical scheme:

[0007] A method for assisting welding of a scissors brace, the outer dimensions of the jacket are divided into a lower section, a middle section and an upper section from bottom to top in the height direction, and the corresponding lower section, middle section and upper section of the jacket are defined, the lower section, middle section and upper section are all isosceles trapezoidal structures, and the areas decrease in size, and the construction includes the following steps:

[0008] S1, welding the lower section:

[0009] Within the range of the lower section, the two ends of the welded pipe are cut and formed, and each pipe is placed in an "X" shape, and the centers of each pipe are interconnected; each pipe is supported by a plurality of support plate members;

[0010] S2, welding the middle section:

[0011] Within the range of the middle section, the two ends of the welded pipe are cut and formed, and each pipe is placed in an "X" shape, and the centers of each pipe are interconnected; each pipe is positioned by a bracket assembly;

[0012] The bracket assembly includes two rectangular brackets, at least two connecting beams connecting the two rectangular brackets, and a plurality of support plate members arranged on the rectangular bracket for supporting each pipe;

[0013] The bracket assembly connection structure is:

[0014] a type, the two ends of the two connecting beams are respectively fixed to the two ends of one side edge of the two rectangular brackets, so that the two rectangular brackets are arranged in parallel on the same horizontal plane, forming a rectangular structure, and when the pipe is welded, the middle section is located at the center of the rectangular structure;

[0015] Or:

[0016] b type, the two connecting beams are respectively extended from one side edge of one rectangular bracket to one side edge of the other rectangular bracket, and are fixed after being staggered, forming a straight line extending connecting edge and a broken line staggered edge; when the pipe is welded, the center of the middle section is located at the center of symmetry of the staggered edge;

[0017] S3, welding the upper section:

[0018] Take the same size a type bracket assembly in step S2, limit the range of the upper section, cut and form the two ends of the welded pipe, and place each pipe in an "X" shape, and the centers of each pipe are interconnected, and when the pipe is welded, the upper section is located at the center of the rectangular structure.

[0019] Preferably, in the above steps S1, S2 and S3, the welding connection position of each pipe is provided with a triangular reinforcing plate located between each pipe and distributed horizontally, and a longitudinal reinforcing plate connecting at least two pipes.

[0020] Preferably, the support plate is a vertical plate with an arc-shaped surface at the top.

[0021] Preferably, the support plate consists of a vertical plate with an arc-shaped top surface and triangular structural plates on both sides of the vertical plate.

[0022] Preferably, the support plate comprises two bottom beams, a crossbeam connecting the two bottom beams, a column located at the connection between the crossbeam and the two bottom beams, a top beam located at both ends of the two columns, and a vertical plate with an arc-shaped top surface arranged on the bottom beam.

[0023] Preferably, vertical reinforcing plates are provided on both sides of the upright plate.

[0024] Preferably, the cross-section of the connecting beam is I-shaped.

[0025] Preferably, in steps S1, S2, and S3 above, each pipe is equipped with a tie rod for auxiliary support during welding.

[0026] By adopting the aforementioned technical solution, the beneficial effects of the present invention are:

[0027] This technical solution addresses the external dimensions of the jacket framework by designing a bracket assembly that facilitates positioning and planning of each section's dimensions. The dimensions of each section are adjusted and positioned using this bracket assembly, ensuring that the dimensions of each section meet design requirements. This facilitates welding construction, guarantees consistent welding of the scissor braces, and features a simple structure that is conducive to production. Furthermore, the bracket assembly can be configured in two different shapes to accommodate the production of jacket frameworks of varying sizes, offering high flexibility. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the planar structure of the lower frame in an embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram of the structure of the support plate in an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the planar structure of the upper frame (type a bracket assembly) in an embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of the planar structure of the upper frame (type a bracket assembly) according to an embodiment of the present invention;

[0032] Figure 5 This is a schematic diagram of another structural bracket assembly according to an embodiment of the present invention (type b bracket assembly);

[0033] Figure 6 This is a schematic diagram of the placement structure of the lower frame in an embodiment of the present invention.

[0034] Figure 7 This is a schematic diagram of an "X" shaped structure.

[0035] Reference numerals in the attached drawings: 1. Lower frame section; 1a. Lower section surface; 2. Upper middle frame section; 2a. Upper middle section surface; 3. Upper frame section; 3a. Upper section surface; 4. Support plate; 41. Bottom beam; 42. Horizontal beam; 43. Column; 44. Top beam; 45. Vertical plate; 46. Vertical reinforcing plate; 5. Bracket assembly; 51. Rectangular bracket; 52. Connecting beam; 53. Connecting edge; 54. Staggered edge; 6. Tie rod; 7. Triangular reinforcing plate; 8. Longitudinal reinforcing plate. Detailed Implementation

[0036] The following will describe in detail the implementation of the present invention with reference to specific embodiments, so that the process of how the present invention uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0037] Example

[0038] refer to Figures 1 to 7 A welding auxiliary method for scissor bracing involves dividing the outer dimensions of the guide frame from bottom to top into a lower section 1, a middle section, and an upper section 3. The middle section is further divided into a lower-middle section and an upper-middle section 2. Corresponding lower surface 1a, lower-middle surface, upper-middle surface 2a, and upper surface 3a on the guide frame are defined. Each of these surfaces is an isosceles trapezoid with decreasing area. The construction process includes the following steps:

[0039] S1, Welding the lower section of the frame 1:

[0040] Within the area of ​​section 1a (the largest dimension of the lower frame 1), the ends of the welded pipes are cut and shaped, and each pipe is placed in an "X" shape, with the centers of each pipe interconnected. Each pipe is supported by several support plates 4. The support plate 4 structure consists of two bottom beams 41, a crossbeam 42 connecting the two bottom beams 41, a column 43 located at the connection between the crossbeam 42 and the two bottom beams 41, a top beam 44 located at both ends of the two columns 43, and an upright plate 45 with an arc-shaped top surface arranged on the bottom beams 41. Vertical reinforcing plates 46 are provided on both sides of the upright plate 45. This support plate 4 structure has sufficient structural strength for the largest dimension of the lower frame 1, and the number can be flexibly selected according to the size of the lower frame 1 for flexible use.

[0041] S2, Welding of the middle section frame:

[0042] The welding of the lower and middle sections of the frame and the welding of the upper and middle sections of the frame are carried out separately. The two ends of the welded pipes are cut and shaped, and each pipe is placed in an "X" shape with the center of each pipe interconnected. Each pipe is positioned by a bracket assembly 5.

[0043] The bracket assembly 5 includes two rectangular brackets 51, two connecting beams 52 connecting the two rectangular brackets 51, and several support plates 4 disposed on the rectangular brackets 51 for supporting each pipe; wherein, the cross section of the connecting beams 52 is I-shaped, which can ensure the structural stability of the connection between the connecting beams 52 and the rectangular brackets 51, and also ensure the external structure of the bracket assembly 5.

[0044] Among them, the upper and middle section of the frame 2 is relatively small in size, and the bracket assembly 5 used has the following connection structure:

[0045] Type a, the two ends of the two connecting beams 52 are respectively fixed to the two ends of one side edge of the two rectangular brackets 51, so that the two rectangular brackets 51 are arranged in parallel on the same horizontal plane to form a rectangular structure. When the pipe is welded, the middle section is located at the center of the rectangular structure; (the upper and lower edges of the upper middle section 2a slightly extend beyond the edge of the bracket assembly 5).

[0046] The lower section of the frame 1 is relatively large, and the connection structure of the bracket assembly 5 used is as follows:

[0047] Type b, the two connecting beams 52 extend from one side edge of a rectangular bracket 51 to one side edge of another rectangular bracket 51, and are fixed together after being staggered from each other, forming a straight connecting edge 53 and a staggered edge 54 with a broken line; when the pipe is welded, the center of the middle section is located at the center of symmetry of the staggered edge 54.

[0048] In this way, during production, type A and type B bracket assemblies 5 can be selected according to different sizes. Since the dimensions of the rectangular bracket 51 and connecting beam 52 of the bracket assembly 5 are clearly defined, the structural dimensions of the produced middle section frame can be easily determined, which is more conducive to production.

[0049] S3, Welding the upper frame section 3:

[0050] The size of the upper section 3 is further reduced compared to the middle and upper section 2. Therefore, the same type a bracket assembly 5 of the same size as in step S2 is used. Limited by the upper section surface 3a (the upper section surface 3a is entirely within the range of the two bracket assemblies 5), the ends of the welded pipes are cut and shaped, and each pipe is placed in an "X" shape, with the centers of each pipe interconnected. When the pipes are welded, the upper section surface 3a is located at the center of the rectangular structure. This technical solution, considering the external dimensions of the guide frame, designs a bracket assembly 5 that facilitates positioning and planning of each section's dimensions. The dimensions of each section are adjusted and positioned using the bracket assembly 5, ensuring that the dimensions of each section meet the design requirements. This facilitates welding construction, ensures the welding consistency of each section's scissor brace, has a simple structure, and is conducive to production. The bracket assembly 5 can be modified into two different shapes according to the dimensions of the guide frame to suit the production of guide frames of different sizes, offering high flexibility.

[0051] During construction, steps S1, S2, and S3 can be performed separately. Furthermore, during the welding of each pipe section, tie rods 6 are installed for auxiliary support. This further ensures that the welded sections of the frame are at the same level and provides auxiliary support during the welding process, preventing displacement.

[0052] Structurally, in steps S1, S2, and S3 above, each pipe has a triangular reinforcing plate 7 located between the pipes and distributed horizontally, as well as a longitudinal reinforcing plate 8 connecting at least two pipes at the welding connection position. The triangular reinforcing plate 7 ensures that the angle of the "X" shaped structure is maintained, while the longitudinal reinforcing plate 8 is located at the upper and lower ends of the pipes, further improving the strength of the connection structure.

[0053] In actual production, the structure of the support plate 4 can be flexibly selected according to requirements, simplifying the support plate 4 as follows:

[0054] ① It is a vertical plate with an arc-shaped surface at the top;

[0055] ② The supporting plate 4 is composed of a vertical plate 45 with an arc-shaped surface at the top and triangular structural plates on both sides of the vertical plate 45.

[0056] This makes it easier to fix the support plate 4 onto the rectangular bracket 51, facilitating construction.

[0057] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A welding auxiliary method for scissor braces, characterized in that, The outer dimensions of the jacket are divided from bottom to top in the height direction into a lower section frame (1), a middle section frame, and an upper section frame (3), and the corresponding lower section surface (1a), middle section surface, and upper section surface (3a) on the jacket are defined. The lower section surface (1a), middle section surface, and upper section surface (3a) are all isosceles trapezoid structures, and their areas decrease in sequence. The construction includes the following steps: S1. Weld the lower section frame (1): Limited by the range of the lower section surface (1a), the two ends of the welded pipes are cut and formed, and each pipe is placed in an "X" shape with the centers of each pipe cross-linked; each pipe is supported by a number of support plate members (4) below; S2. Weld the middle section frame: Limited by the range of the middle section surface, the two ends of the welded pipes are cut and formed, and each pipe is placed in an "X" shape with the centers of each pipe cross-linked; each pipe is positioned by a bracket assembly (5); The bracket assembly (5) includes two rectangular brackets (51), at least two connecting beams (52) connecting the two rectangular brackets (51), and a number of support plate members (4) provided on the rectangular brackets (51) for supporting each pipe; The connection structure of the bracket assembly (5) is: Type a: The two ends of the two connecting beams (52) are respectively fixedly connected to the two ends of one side edge of the two rectangular brackets (51), so that the two rectangular brackets (51) are arranged in parallel on the same horizontal plane, forming a rectangular structure. When the pipes are welded, the middle section surface is located at the center of the rectangular structure; Or: Type b: The two connecting beams (52) respectively extend from one side edge of one rectangular bracket (51) to one side edge of the other rectangular bracket (51), and are fixedly connected after being staggered, forming a straight extending connecting edge (53) and a zigzag staggered edge (54); when the pipes are welded, the center of the middle section surface is located at the symmetric center of the staggered edge (54); S3. Weld the upper section frame (3): Take the type a bracket assembly (5) of the same size in step S₂, limited by the range of the upper section surface (3a), the two ends of the welded pipes are cut and formed, and each pipe is placed in an "X" shape with the centers of each pipe cross-linked. When the pipes are welded, the upper section surface (3a) is located at the center of the rectangular structure.

2. The scissor brace welding auxiliary method according to claim 1, characterized in that: In the above steps S1, S2, and S3, at the welded connection positions of each pipe, there are triangular reinforcement plates (7) distributed horizontally between each pipe and longitudinal reinforcement plates (8) connecting at least two pipes.

3. The scissor brace welding auxiliary method according to claim 1, characterized in that: The support plate member (4) is a vertical plate (45) with an arc-shaped surface at the top end.

4. The scissor brace welding auxiliary method according to claim 1, characterized in that: The support plate member (4) consists of a vertical plate (45) with an arc-shaped surface at the top end and triangular structural plates provided on both sides of the vertical plate (45).

5. The scissor brace welding auxiliary method according to claim 1, characterized in that: The support plate member (4) includes two bottom beams (41) at the bottom, a cross beam (42) connecting the two bottom beams (41), columns (43) provided at the connection of the cross beam (42) and the two bottom beams (41), top beams (44) provided at both ends of the two columns (43), and a vertical plate (45) with an arc-shaped surface at the top end arranged on the bottom beam (41).

6. A method for assisting in welding scissor braces according to any one of claims 3-5, characterized in that: Vertical reinforcement plates (46) are provided on both sides of the vertical plate (45).

7. A method for assisting in welding scissor braces according to any one of claims 1-5, characterized in that: The cross section of the connecting beam (52) is in an "I" shape.

8. A method for assisting in welding scissor braces according to any one of claims 1-5, characterized in that: In steps S1, S2, and S3 above, each pipe is equipped with a tie rod (6) for auxiliary support during welding.

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