Auxiliary method for diagonal bridging welding

Abstract

The invention relates to the technical field of engineering construction structures, in particular to an auxiliary method for diagonal bridging welding, and solves the problem that the consistency of diagonal bridging in an existing jacket is insufficient. The overall dimension of the jacket is sequentially divided into a lower-section jacket body, a middle-section jacket body and an upper-section jacket body from bottom to top in the height direction; the construction method comprises the following steps: S1, welding a lower section frame body; S2, welding a middle section frame body: by taking the range of the middle section surface as a limit, cutting and forming the two ends of a welded pipe, and welding the middle section frame body to form the lower section frame body and the middle section frame body, so that the two ends of the welded pipe body are welded to form the lower section frame body and the middle section frame body, and the lower section frame body and the middle section frame body are welded to form the lower section frame body and the middle section frame body; the pipes are arranged in an X shape, and the centers of the pipes are mutually crosslinked; each pipe is positioned through a bracket assembly; the bracket assembly comprises two rectangular brackets, at least two connecting beams connected with the two rectangular brackets and a plurality of supporting plates arranged on the rectangular brackets and used for supporting all pipes. And S3, welding the upper-section frame body.

Description

Technical Field

[0001] The invention relates to the technical field of engineering construction structures, and in particular to a scissors brace welding auxiliary method. Background Art

[0002] Offshore wind power is an important area of ​​renewable energy development in recent years. During construction, the offshore wind power conductor frame is an important part of the offshore wind farm. It is mainly used to support and fix the foundation structure of the wind turbine. It is the connection section between the underwater pile foundation of the offshore wind turbine tower and the upper tower. It is mainly used in offshore wind farms with large single-unit capacity, deep water level and poor geological conditions. The conductor frame can support the weight of the wind turbine, booster station or superstructure, transfer the load from the seabed, and ensure stability in strong winds, rough waves and corrosive seawater. In terms of structure, it needs to have good sealing, stable structure and high strength.

[0003] In the prior art, as shown in Chinese patent application CN 119102247 A, the technical solution shown therein is a conductor frame foundation and a conductor frame foundation construction method, wherein the conductor frame structure includes a main frame body, a support structure, etc., wherein the support structure includes a plurality of support rod groups arranged along the height direction, the support rod groups are connected to the first connecting parts of the two side legs, the interior of the first connecting part has a first pouring space, and the first pouring space is filled with grouting material; the legs also include two second connecting parts, the two second connecting parts are respectively arranged on the topmost connecting section and the bottommost connecting section, and the support rod group also includes a third connecting part and two cross-arranged support members, the ends of the support members are connected to the first connecting part or the second connecting part; the two support members 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] Under this structure, the installation structure between the first connection part, the second connection part and the third connection part located in the center cannot ensure that the scissors brace is located in the center of the conductor rack, and a conductor rack has multiple levels of scissors braces according to different positions; this state is limited by factors such as welding construction, pipe accuracy and labor, and obviously cannot guarantee the structural consistency of the conductor rack. Summary of the invention

[0005] Therefore, the present invention provides a scissors brace welding auxiliary method, which solves the problem of insufficient consistency of the scissors braces in the existing conductor frame.

[0006] To achieve the above object, the present invention is achieved through the following technical solutions:

[0007] A scissors brace welding auxiliary method is provided, wherein the outer dimensions of the jacket frame are divided into a lower frame body, a middle frame body and an upper frame body from bottom to top in height direction, and the corresponding lower section surface, middle section surface and upper section surface on the jacket frame are defined, wherein the lower section surface, middle section surface and upper section surface are all isosceles trapezoidal structures, and the area size decreases in sequence, and the construction includes the following steps:

[0008] S1. Welding the lower frame:

[0009] Within the scope of the following section, both ends of the welded pipes are cut and shaped, and the pipes are placed in an "X" shape, with the centers of the pipes interconnected; each pipe is supported by a number of supporting plates;

[0010] S2. Welding the middle frame:

[0011] Cut and shape the two ends of the welded pipe within the range of the middle section, and place the pipes in an "X" shape, with the centers of the pipes interconnected; position the pipes through 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 supporting plates arranged on the rectangular brackets for supporting the pipes;

[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 to form a rectangular structure. When the pipe is welded, the middle section is located at the center of the rectangular structure;

[0015] or:

[0016] Type b: two connecting beams extend from one side edge of a rectangular bracket to another side edge of the rectangular bracket, and are staggered and fixed to each other to form a straight-line extending connecting edge and a staggered edge of a folded line; when the pipe is welded, the center of the middle section is located at the symmetric center of the staggered edge;

[0017] S3. Welding the upper frame:

[0018] Take the A-type bracket assembly of the same size as in step S2, limit the range of the upper section surface, cut and shape the two ends of the welded pipe, and place the pipes in an "X" shape, with the centers of the pipes interconnected. When the pipes are welded, the upper section surface is located in the center of the rectangular structure.

[0019] Preferably, in the above steps S1, S2, and S3, the welding connection positions of the pipes are provided with triangular reinforcement plates located between the pipes and distributed horizontally, and longitudinal reinforcement plates connecting at least two pipes.

[0020] Preferably, the supporting plate is a vertical plate with a curved surface at the top.

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

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

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

[0024] Preferably, the cross-section of the connecting beam is in the shape of an I.

[0025] Preferably, in the above steps S1, S2 and S3, each pipe is provided with a tie rod to assist in supporting when being welded.

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

[0027] This technical solution aims at the outer dimensions of the conductor rack and designs a bracket assembly that is convenient for positioning and planning the dimensions of each frame section. The dimensions of each frame section are adjusted, designed and positioned according to the dimensions of the bracket assembly, ensuring that the dimensions of each frame section meet the design dimension requirements, facilitating welding construction for workers and ensuring the welding consistency of each section of the scissors strut. The structure is simple and easy to produce. The bracket assembly can be changed into two shapes according to the dimensions of the conductor rack to be suitable for the production of conductor racks of different sizes, and has strong flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0029] Figure 2 This is a schematic structural diagram of a support plate according to an embodiment of the present invention;

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

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

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

[0033] Figure 6 Schematic diagram of the placement structure of the lower frame in an embodiment of the present invention.

[0034] Figure 7 Schematic diagram of the "X" shaped structure.

[0035] Figure numerals: 1, lower frame; 1a, lower surface; 2, middle and upper frame; 2a, middle and upper surface; 3, upper frame; 3a, upper surface; 4, support plate; 41, bottom beam; 42, cross beam; 43, column; 44, top beam; 45, vertical plate; 46, vertical reinforcement plate; 5, bracket assembly; 51, rectangular bracket; 52, connecting beam; 53, connecting edge; 54, staggered edge; 6, tie rod; 7, triangular reinforcement plate; 8, longitudinal reinforcement plate. DETAILED DESCRIPTION

[0036] The following will describe the implementation methods of the present invention in detail in conjunction with specific embodiments, so that the implementation process of how the present invention applies 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 scissors brace welding auxiliary method is provided. The outer dimensions of the jacket frame are divided into a lower frame body 1, a middle frame body and an upper frame body 3 from bottom to top in height direction. The middle frame body is further divided into a middle lower frame body and a middle upper frame body 2. The corresponding lower segment surface 1a, middle lower segment surface, middle upper segment surface 2a and upper segment surface 3a on the jacket frame are defined. The lower segment surface 1a, middle lower segment surface, middle upper segment surface 2a and upper segment surface 3a are all isosceles trapezoidal structures, and the area size decreases in sequence. The construction includes the following steps:

[0039] S1. Welding the lower frame 1:

[0040] The two ends of the welded pipes are cut and formed within the range of the lower section surface 1a (the size of the lower section frame 1 is the largest), and the pipes are placed in an "X" shape, with the centers of the pipes interconnected; each pipe is supported by a number of support plates 4; wherein the structure of the support plates 4 here is: including two bottom beams 41 at the bottom, a cross beam 42 connecting the two bottom beams 41, a column 43 provided at the connection between the cross beam 42 and the two bottom beams 41, a top beam 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, and vertical reinforcement plates 46 are provided on both sides of the vertical plate 45. This support plate 4 structure has sufficient structural strength for the lower section frame 1 with the largest size, and the number can be flexibly selected according to the size of the lower section frame 1 to obtain flexible use;

[0041] S2. Welding the middle frame:

[0042] The welding of the middle and lower frame and the welding of the middle and upper frame 2 are carried out separately, and the two ends of the welded pipes are cut and formed, and each pipe is placed in an "X" shape, and the centers of each pipe are cross-linked; 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 a plurality of support plates 4 arranged on the rectangular brackets 51 for supporting each pipe; wherein the cross-section of the connecting beam 52 is in an "I" shape, which can ensure the structural stability of the connection between the connecting beam 52 and the rectangular bracket 51, and ensure the external structure of the bracket assembly 5.

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

[0045] a-type, 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 ends of the middle upper section 2a slightly extend out of the edge of the bracket assembly 5);

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

[0047] b-type, the two connecting beams 52 extend from one side edge of a rectangular bracket 51 to another side edge of the rectangular bracket 51, and are staggered and fixed to each other to form a straight-line extending connecting edge 53 and a staggered edge 54 of a folded line; when the pipe is welded, the center of the middle section is located at the symmetric center of the staggered edge 54;

[0048] In this way, in production, type a and type b bracket components 5 can be selected according to different sizes. Since the sizes of the rectangular bracket 51 and the connecting beam 52 of the bracket component 5 are clear, the structural size of the produced middle frame can be easily determined, which is more conducive to production.

[0049] S3, welding upper frame 3:

[0050] The size of the upper frame 3 is further reduced compared to the middle and upper frame 2, so the a-type bracket assembly 5 of the same size in step S2 is taken, and the upper surface 3a is limited (the upper surface 3a is located within the range of the two bracket assemblies 5), and 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. When the pipes are welded, the upper surface 3a is located in the center of the rectangular structure. This technical solution is designed to facilitate the positioning and planning of the size of each frame section according to the outer dimensions of the catheter rack. The size adjustment design and positioning of each frame section are carried out through the size of the bracket assembly 5, ensuring that the size of each frame section meets the design size requirements, facilitating the welding construction of workers, and ensuring the welding consistency of each section of the scissors support. The structure is simple and convenient for production; the bracket assembly 5 can be changed in two shapes according to the size of the catheter rack to be suitable for the production of catheter racks of different sizes, and has strong flexibility.

[0051] During construction, the above steps S1, S2, and S3 can be performed separately, and during construction, each pipe is welded with a tie rod 6 for auxiliary support. This can further ensure that each section of the frame is at the same level after welding, and provide auxiliary support for the welding process to avoid displacement.

[0052] Structurally, in the above steps S1, S2, and S3, the welding connection positions of each pipe are provided with triangular reinforcing plates 7 located between each pipe and distributed horizontally, and longitudinal reinforcing plates 8 connecting at least two pipes. The triangular reinforcing plates 7 can ensure that the angle of the "X"-shaped structure is maintained, and the longitudinal reinforcing plates 8 are provided at the upper and lower ends of the pipe to further improve the strength of the connection structure.

[0053] In actual production, the structure of the support plate 4 can be flexibly selected according to the needs, and the support plate 4 can be simplified, for example:

[0054] ①, a vertical plate 45 having an arc-shaped surface at the top;

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

[0056] In this way, it is convenient to fix the support plate 4 on the rectangular bracket 51, so as to facilitate construction.

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

Claims

1. A scissors brace welding auxiliary method, characterized in that: The outer dimensions of the jacket are divided into a lower frame body (1), a middle frame body and an upper frame body (3) from bottom to top in height direction, 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 trapezoidal structures, and the area sizes decrease in sequence. The construction includes the following steps: S1. Welding the lower frame (1): Within the range of the lower section (1a), both ends of the welded pipes are cut and shaped, and the pipes are placed in an "X" shape, with the centers of the pipes interconnected; each pipe is supported by a plurality of support plates (4) below; S2. Welding the middle frame: The two ends of the welded pipes are cut and shaped within the range of the middle section, and the pipes are placed in an "X" shape, with the centers of the pipes interconnected; each pipe is positioned by a bracket assembly (5); The bracket assembly (5) comprises two rectangular brackets (51), at least two connecting beams (52) connecting the two rectangular brackets (51), and a plurality of supporting plates (4) arranged on the rectangular brackets (51) for supporting each pipe; The connection structure of the bracket assembly (5) is: a-type, 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 to form a rectangular structure. When the pipe is welded, the middle section is located at the center of the rectangular structure; or: b-type, the two connecting beams (52) extend from one side edge of a rectangular bracket (51) to another side edge of the rectangular bracket (51), and are staggered and fixed to each other to form a straight-line extending connecting edge (53) and a folded-line staggered edge (54); when the pipe is welded, the center of the middle section is located at the symmetric center of the staggered edge (54); S3. Welding the upper frame (3): Take the A-type bracket assembly (5) of the same size as in step S2, and cut and shape the two ends of the welded pipe within the range of the upper section surface (3a), and place the pipes in an "X" shape. The centers of the pipes are interconnected. When the pipes are welded, the upper section surface (3a) is located at the center of the rectangular structure.

2. A scissors brace welding auxiliary method according to claim 1, characterized in that: In the above steps S1, S2, and S3, the welding connection positions of the pipes are provided with triangular reinforcing plates (7) located between the pipes and distributed horizontally, and longitudinal reinforcing plates (8) connecting at least two pipes.

3. The auxiliary method for scissors brace welding according to claim 1, characterized in that: The supporting plate (4) is a vertical plate (45) having a curved surface at the top end.

4. The auxiliary method for scissors brace welding according to claim 1, characterized in that: The support plate (4) is composed of a vertical plate (45) having an arc-shaped surface at the top and triangular structural plates arranged on both sides of the vertical plate (45).

5. The auxiliary method for scissors brace welding according to claim 1, characterized in that: The support plate (4) comprises two bottom beams (41) at the bottom, a cross beam (42) connecting the two bottom beams (41), a column (43) arranged at the connection between the cross beam (42) and the two bottom beams (41), a top beam (44) arranged 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 scissors brace welding auxiliary method according to claims 3-5, characterized in that: Vertical reinforcing plates (46) are provided on both sides of the vertical plate (45).

7. A scissors brace welding auxiliary method according to claims 1-5, characterized in that: The cross section of the connecting beam (52) is in the shape of an I.

8. A scissors brace welding auxiliary method according to claims 1-5, characterized in that: In the above steps S1, S2 and S3, each pipe is provided with a tie rod (6) for auxiliary support during welding.

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