A petal-shaped hyperboloid special-shaped steel bridge tower and a manufacturing method thereof

Abstract

The present application belongs to the technical field of steel structure bridge construction, and particularly relates to a petal-shaped double-curved-surface special-shaped steel bridge tower and a manufacturing method thereof. The present application is designed to connect a plurality of tower columns to form a whole, which helps to enhance the stability of the petal-shaped double-curved-surface special-shaped steel bridge tower structure, effectively avoids tilting, deformation and other phenomena under the action of earthquakes, strong winds or traffic loads, and further improves the safety of the bridge. The middle parts of the adjacent tower columns are not connected to each other, which helps to manufacture and install in sections during the construction process, simplifies the construction process, effectively reduces the construction difficulty and improves the construction accuracy, and further improves the construction quality of the petal-shaped double-curved-surface special-shaped steel bridge tower. Compared with the manufacturing and construction of the linear steel bridge tower, the present application has the excellent characteristics of good forming effect, fast assembly speed, less investment in manpower and materials, low production cost, high economic benefit, and further improved production efficiency.

Description

Technical Field

[0001] This invention belongs to the field of steel structure bridge construction technology, specifically relating to a petal-shaped hyperboloid irregular steel bridge tower and its manufacturing method. Background Technology

[0002] With economic development, scientific and technological progress, and improved living standards, humanity has placed higher demands on its surrounding environment. As large, permanent public structures, bridges, in addition to meeting safety, practicality, and economic requirements, are increasingly valued for their aesthetic characteristics. Bridge towers are an indispensable structural element of bridges. Compared to concrete bridge towers, steel bridge towers offer advantages such as lighter weight, higher strength, better seismic performance, and faster construction, making them suitable for both cable-stayed and suspension bridges.

[0003] Currently, the application of steel bridge towers in my country's bridge construction field is still relatively limited. Existing bridge specifications lack clear guidelines for the manufacturing and acceptance of hyperboloid steel bridge towers, and there are no readily available manufacturing processes for reference. This increases the difficulty of manufacturing hyperboloid steel bridge towers. Furthermore, because hyperboloid steel bridge towers have a curvature along their height, their complex hyperboloid arc structure requires ensuring the overall alignment and curvature during manufacturing to meet the required alignment of the completed bridge tower. This high level of manufacturing difficulty and precision requirements are the most significant factors restricting the manufacturing process of steel bridge towers. Summary of the Invention

[0004] The present invention aims to overcome the shortcomings of existing hyperboloid steel bridge towers, such as complex structural design, high manufacturing difficulty, high cost, low production efficiency, low construction precision, difficulty in controlling the tower shape and curvature, and inability to meet the design requirements. The invention provides a petal-shaped hyperboloid irregular steel bridge tower and its manufacturing method.

[0005] To achieve the above-mentioned objectives, the present invention is implemented through the following technical solution:

[0006] A petal-shaped hyperboloid irregular steel bridge tower includes several tower columns. The tops and bottoms of adjacent tower columns are fixedly connected, while the middle parts of adjacent tower columns are not connected to each other, thereby dividing the petal-shaped hyperboloid irregular steel bridge tower into an upper layer, a middle layer, and a lower layer. The cross-sectional area of ​​the middle layer is larger than that of the upper and lower layers.

[0007] The adjacent tower columns enclose each other to form a cavity that is connected from top to bottom;

[0008] Each tower column includes an inner wall panel and an outer wall panel, both of which have curved structures, and the inner wall panel and the outer wall panel together form a receiving cavity.

[0009] The petal-shaped hyperboloid irregular steel bridge tower of this invention comprises several tower columns. The tops and bottoms of adjacent tower columns are fixedly connected, while the middle sections of adjacent tower columns are not connected, thus dividing the petal-shaped hyperboloid irregular steel bridge tower into an upper, middle, and lower layer. This invention, by connecting several tower columns to form a whole, helps enhance the stability and stiffness of the petal-shaped hyperboloid irregular steel bridge tower structure, reduces the vibration of its overall structure, and effectively avoids tilting and deformation of the overall structure under earthquakes, strong winds, or traffic loads, further improving the safety of the bridge. Simultaneously, the fact that the middle sections of adjacent tower columns are not connected facilitates segmented manufacturing and installation during construction, simplifying the construction process, thereby effectively reducing construction difficulty and improving construction accuracy, further enhancing the construction quality of the petal-shaped hyperboloid irregular steel bridge tower.

[0010] The cross-sectional area of ​​the middle layer of the steel bridge tower is larger than that of the upper and lower layers. This invention, by designing a three-layered steel bridge tower with different cross-sectional areas, helps to improve the overall load-bearing capacity and enhance structural stability of the petal-shaped hyperboloid steel bridge tower. Simultaneously, reasonable cross-sectional design based on stress conditions helps to further reduce the overall weight and manufacturing cost of the petal-shaped hyperboloid steel bridge tower while ensuring overall structural strength and stability. Furthermore, the larger cross-sectional area of ​​the middle layer helps to prevent lateral displacement and deformation of the petal-shaped hyperboloid steel bridge tower under lateral wind loads, improving the wind resistance of the middle layer.

[0011] Adjacent tower columns form interconnected cavities from top to bottom. Each tower column includes an inner wall panel and an outer wall panel, both with curved surfaces, which together form a receiving cavity. This invention, through the design of cavities, improves the overall strength and seismic resistance of the petal-shaped hyperboloid irregular steel bridge tower structure. Simultaneously, it facilitates maintenance personnel entering the steel bridge tower through the cavities for repairs and inspections, making it more convenient and efficient, and possessing high practical value and economic benefits. The inner and outer wall panels of the tower columns of this invention are both curved, resulting in an aesthetically pleasing shape and excellent forming effect, which is conducive to its widespread application in the construction of irregular steel bridge towers for landscape bridges.

[0012] Preferably, the number of tower columns is at least two and adjacent tower columns are arranged symmetrically.

[0013] The above-mentioned design helps to improve the overall stability and structural strength of the petal-shaped hyperboloid steel bridge tower, further enhancing its wind and earthquake resistance and effectively preventing tilting and deformation. Simultaneously, it simplifies the construction process, thereby effectively reducing construction difficulty and improving construction precision, ultimately enhancing the construction quality of the petal-shaped hyperboloid steel bridge tower.

[0014] Preferably, the inner wall of the receiving cavity is provided with a number of ribs along its radial direction.

[0015] The above-mentioned design helps to improve the structural stiffness and load-bearing capacity of the cavity, further enhancing its wind and seismic resistance. Simultaneously, the multiple ribs on the inner wall of the cavity help reduce vibration and deformation, further improving the overall stability and safety of the petal-shaped hyperboloid steel bridge tower. Furthermore, the multiple ribs allow for a reduction in the cavity wall thickness, saving materials and further lowering production costs.

[0016] Preferably, the interior of the receiving cavity is further provided with several transverse partitions, which are fixedly connected to the plate ribs.

[0017] The cavity is equipped with multiple transverse partitions, which can divide the cavity into multiple relatively independent spaces. This helps to reduce the vibration and deformation of the cavity structure, while improving the structural stiffness and load-bearing capacity of the cavity, and further enhancing the overall stability and safety of the petal-shaped hyperboloid irregular steel bridge tower.

[0018] Preferably, the diaphragm is provided with rib holes for the ribs to pass through.

[0019] The ribs pass through the rib holes and are fixedly connected to the diaphragms, making the connection between the ribs and diaphragms tighter and more secure, which helps improve the structural stability and load-bearing capacity of the cavity. At the same time, the multiple rib holes effectively avoid the need for complete disassembly of the diaphragms, simplifying operation and facilitating later inspection and maintenance. Furthermore, the rib holes help reduce the wall thickness of the diaphragms, saving materials and further reducing production costs.

[0020] Preferably, the ribs include outer wall ribs symmetrically arranged along the outer wall panel and inner wall ribs fixedly connected to the inner wall panel.

[0021] The above-mentioned design helps to improve the load-bearing capacity and structural stability of the petal-shaped hyperboloid irregular steel bridge tower, while effectively reducing its weight and production cost.

[0022] Preferably, the middle layer of the steel bridge tower is provided with a support platform that connects to the inner wall panels on each tower column, and the top of the upper layer of the steel bridge tower is provided with a tower cap.

[0023] The support platform connects to the inner wall panels of each tower column, forming a unified structure. This enhances the structural stability and load-bearing capacity of the petal-shaped hyperboloid steel bridge tower, reduces overall structural vibration, and effectively prevents tilting and deformation under earthquakes, strong winds, or traffic loads, further improving bridge safety. Simultaneously, the support platform improves the maintainability of the petal-shaped hyperboloid steel bridge tower, reducing the difficulty of later maintenance. Furthermore, the tower cap effectively protects the top of the petal-shaped hyperboloid steel bridge tower, preventing rainwater and dust from entering the tower and extending its service life. The tower cap also makes the tower's appearance cleaner and more aesthetically pleasing, enhancing its architectural appeal.

[0024] The manufacturing method of the petal-shaped hyperboloid irregular steel bridge tower as described above includes the following steps:

[0025] (S.1) Obtain the hyperboloid line data of the tower column, and divide the inner wall plate and the outer wall plate according to the hyperboloid line data to obtain a number of outer wall plate curved surface units for splicing the outer wall plate and inner wall plate curved surface units for splicing the inner wall plate.

[0026] (S.2) Install the assembly frame, hoist each outer wall panel curved surface unit obtained in step (S.1) onto the assembly frame for temporary fixation, then assemble the outer wall panel ribs and verify and weld them to obtain an outer wall panel in which the outer wall panel ribs and the outer wall panel curved surface units fit together.

[0027] (S.3) Hoist each diaphragm onto the outer wall panel in step (S.3) so that each outer wall panel rib passes through the corresponding through-rib hole on each diaphragm. After verification, weld and fix it to obtain an outer wall panel in which the diaphragm and the outer wall panel are completely fixed.

[0028] (S.4) Install inner wall plate ribs on the transverse diaphragm in step (S.3), attach each inner wall plate curved surface unit obtained in the step to the transverse diaphragm at the corresponding position, and weld and fix each inner wall plate curved surface unit to the inner wall plate rib to obtain the tower column;

[0029] (S.5) Repeat steps (S.1) to (S.4) to weld and fix the other tower columns;

[0030] (S.6) Weld a support platform connected to the inner wall plate on each tower column in the middle layer of the steel bridge tower. Weld the top and bottom of the adjacent tower columns to obtain the main body of the steel bridge tower. Then install a tower cap on the top of the main body of the steel bridge tower to obtain a petal-shaped hyperboloid irregular steel bridge tower.

[0031] Preferably, the specific steps for installing the assembly frame in step (S.2) are as follows:

[0032] The assembly frame base is fixed, and steel supports are installed at intervals on the assembly frame base according to the hyperboloid line data obtained in step (S.1) to form a horizontal and vertical three-dimensional frame support system. Curvature templates are installed at intervals on the horizontal and vertical three-dimensional frame support system.

[0033] As a further preferred embodiment, the radius of curvature of the inner surface of the curvature template is the same as the curvature of the outer surface of the corresponding outer wall plate surface unit.

[0034] By installing a horizontal and vertical three-dimensional frame support system, the continuity and stability of the entire assembly jig system are ensured, while further improving the structural rigidity of the jig base. Setting up a curvature template with a specific radius of curvature ensures that the outer curved surface of the outer wall panel unit is in close contact with the inner curved surface of the curvature template, effectively improving the accuracy of the curvature template. This makes the manufacturing process of the outer wall panel unit more efficient and precise, further enhancing the construction safety and reliability of the petal-shaped hyperboloid irregular steel bridge tower.

[0035] Preferably, the welding method in steps (S.1) to (S.4) is parallel welding.

[0036] Parallel welding results in high weld strength, excellent sealing, and a more aesthetically pleasing weld joint. Furthermore, its fast welding speed improves production efficiency and reduces costs. In addition, parallel welding eliminates the need for additional welding equipment and manpower, further reducing overall welding costs.

[0037] Therefore, the present invention has the following beneficial effects:

[0038] (1) The present invention connects several tower columns to form a whole, which helps to enhance the stability of the petal-shaped hyperboloid irregular steel bridge tower structure, effectively avoids tilting and deformation under earthquake, strong wind or traffic load, and further improves the safety of the bridge.

[0039] (2) The middle parts of adjacent tower columns of the present invention are not connected to each other, which helps to manufacture and install in sections during the construction process, simplifying the construction process, thereby effectively reducing the construction difficulty and improving the construction accuracy, and further improving the construction quality of the petal-shaped hyperboloid irregular steel bridge tower.

[0040] (3) By designing a cavity, this invention improves the overall strength and seismic resistance of the petal-shaped hyperboloid irregular steel bridge tower structure. At the same time, it facilitates maintenance personnel to enter the interior of the steel bridge tower for maintenance and inspection through the cavity, making it more convenient and efficient, and has high practical value and economic benefits;

[0041] (4) The inner and outer wall panels of the tower column of the present invention are both curved, with beautiful shape and good forming effect, which is conducive to its application in the construction of irregular steel bridge towers for landscape bridges.

[0042] (5) Compared with the manufacturing and construction of straight steel bridge towers, the present invention has the advantages of good forming effect, fast assembly speed, less input of manpower and materials, low production cost and high economic benefits, which further improves production efficiency. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of a petal-shaped hyperboloid irregular steel bridge tower structure.

[0044] Figure 2 This is a schematic diagram of a petal-shaped hyperboloid irregular steel bridge tower structure without a tower cap or supporting platform.

[0045] Figure 3 This is a schematic diagram of the assembly of the inner wall panel and the outer wall panel.

[0046] Figure 4 This is a schematic diagram of the outer wall panel and its internal structure.

[0047] In the diagram: 1. Tower column; 2. Upper layer of steel bridge tower; 3. Middle layer of steel bridge tower; 4. Lower layer of steel bridge tower; 5. Cavity; 6. Inner wall panel; 7. Outer wall panel; 8. Receiving cavity; 9. Rib; 10. Transverse diaphragm; 11. Through rib hole; 12. Outer wall panel rib; 13. Inner wall panel rib; 14. Support platform; 15. Tower cap; 16. Curved surface unit of outer wall panel; 17. Curved surface unit of inner wall panel. Detailed Implementation

[0048] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Those skilled in the art will be able to implement the present invention based on these descriptions. Furthermore, the embodiments of the present invention described below are generally only some, not all, of the embodiments of the present invention. Therefore, all other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0049] Example 1

[0050] This embodiment provides a petal-shaped hyperboloid irregular steel bridge tower.

[0051] like Figure 1-4As shown, the petal-shaped hyperboloid irregular steel bridge tower of the present invention includes several tower columns 1. The tops and bottoms of adjacent tower columns 1 are fixedly connected, while the middle sections of adjacent tower columns 1 are not connected, thereby dividing the petal-shaped hyperboloid irregular steel bridge tower into an upper layer 2, a middle layer 3, and a lower layer 4. By designing several tower columns 1 connected to form a whole, the present invention helps to enhance the stability and stiffness of the petal-shaped hyperboloid irregular steel bridge tower structure, reduce the vibration of its overall structure, and effectively prevent tilting and deformation of the overall structure under earthquakes, strong winds, or traffic loads, further improving the safety of the bridge. Simultaneously, the fact that the middle sections of adjacent tower columns 1 are not connected facilitates segmented manufacturing and installation during construction, simplifying the construction process, thereby effectively reducing construction difficulty and improving construction accuracy, further enhancing the construction quality of the petal-shaped hyperboloid irregular steel bridge tower.

[0052] The cross-sectional area of ​​the middle layer 3 of the steel bridge tower is larger than that of the upper layer 2 and the lower layer 4. This invention, by designing a three-layer structure with different cross-sectional areas, helps to improve the overall load-bearing capacity and enhance structural stability of the petal-shaped hyperboloid steel bridge tower. Simultaneously, reasonable cross-sectional design based on stress conditions helps to further reduce the overall weight and manufacturing cost of the petal-shaped hyperboloid steel bridge tower while ensuring overall structural strength and stability. Furthermore, the larger cross-sectional area of ​​the middle layer 3 helps to prevent lateral displacement and deformation of the petal-shaped hyperboloid steel bridge tower under lateral wind loads, thus improving the wind resistance of the middle layer 3.

[0053] Adjacent tower columns 1 form interconnected cavities 5 from top to bottom. Each tower column 1 includes an inner wall panel 6 and an outer wall panel 7, both with curved surfaces, which together form a receiving cavity 8. This invention, through the design of the cavity 5, improves the overall strength and seismic resistance of the petal-shaped hyperboloid irregular steel bridge tower structure. Simultaneously, it facilitates maintenance personnel entering the steel bridge tower through the cavity 5 for maintenance and inspection, making it more convenient and efficient, and possessing high practical value and economic benefits. The inner wall panel 6 and outer wall panel 7 of the tower column 1 of this invention both have curved surfaces, resulting in an aesthetically pleasing shape and good forming effect, which is conducive to its widespread application in the construction of irregular steel bridge towers for landscape bridges.

[0054] The number of tower columns 1 is at least two, and adjacent tower columns 1 are arranged symmetrically.

[0055] The above-mentioned design helps to improve the overall stability and structural strength of the petal-shaped hyperboloid steel bridge tower, further enhancing its wind and earthquake resistance and effectively preventing tilting and deformation. Simultaneously, it simplifies the construction process, thereby effectively reducing construction difficulty and improving construction precision, ultimately enhancing the construction quality of the petal-shaped hyperboloid steel bridge tower.

[0056] The inner wall of the cavity 8 is provided with several ribs 9 along its radial direction.

[0057] The above-mentioned design helps to improve the structural stiffness and load-bearing capacity of the cavity 8, further enhancing its wind and earthquake resistance. Simultaneously, the multiple ribs 9 on the inner wall of the cavity 8 help reduce vibration and deformation, further improving the overall stability and safety of the petal-shaped hyperboloid steel bridge tower. Furthermore, the multiple ribs 9 allow for a reduction in the wall thickness of the cavity 8, saving materials and further lowering production costs.

[0058] The cavity 8 is also provided with several transverse partitions 10, which are fixedly connected to the ribs 9.

[0059] The cavity 8 is equipped with multiple transverse partitions 10, which can divide the cavity 8 into multiple relatively independent spaces. This helps to reduce the vibration and deformation of the cavity 8 structure, while improving the structural stiffness and load-bearing capacity of the cavity 8, and further improving the overall stability and safety of the petal-shaped hyperboloid irregular steel bridge tower structure.

[0060] The diaphragm 10 is provided with a through hole 11 for the rib 9 to pass through.

[0061] Ribs 9 pass through rib holes 11 and are fixedly connected to the diaphragm 10, making the connection between ribs 9 and diaphragm 10 tighter and stronger, which helps to improve the structural stability and load-bearing capacity of the receiving cavity 8. At the same time, the setting of multiple rib holes 11 effectively avoids the need for complete disassembly of the diaphragm 10, simplifying operation and facilitating later inspection and maintenance. In addition, the setting of rib holes 11 helps to reduce the wall thickness of the diaphragm 10, saving materials and further reducing production costs.

[0062] The rib 9 includes an outer wall panel rib 12 symmetrically arranged along the outer wall panel 7 and an inner wall panel rib 13 fixedly connected to the inner wall panel 6.

[0063] The above-mentioned design helps to improve the load-bearing capacity and structural stability of the petal-shaped hyperboloid irregular steel bridge tower, while effectively reducing its weight and production cost.

[0064] The middle layer 3 of the steel bridge tower is equipped with a support platform 14 that connects to the inner wall panels 6 on each tower column 1. The top of the upper layer 2 of the steel bridge tower is equipped with a tower cap 15.

[0065] The support platform 14 is connected to the inner wall panels 6 on each tower column 1, thus connecting multiple tower columns 1 to form a whole. This helps enhance the structural stability and load-bearing capacity of the petal-shaped hyperboloid steel bridge tower, reduces the vibration of its overall structure, and effectively prevents tilting and deformation of the overall structure of the petal-shaped hyperboloid steel bridge tower under earthquakes, strong winds, or traffic loads, further improving the safety of the bridge. At the same time, the support platform 14 helps improve the maintainability of the petal-shaped hyperboloid steel bridge tower and reduces the difficulty of later maintenance. In addition, the tower cap 15 effectively protects the top of the petal-shaped hyperboloid steel bridge tower, preventing rainwater and dust from entering the steel bridge tower and extending its service life. The tower cap 15 also makes the appearance of the steel bridge tower neater and more aesthetically pleasing, improving its architectural aesthetics.

[0066] This embodiment also provides a method for manufacturing a petal-shaped hyperboloid irregular steel bridge tower.

[0067] The manufacturing method of the petal-shaped hyperboloid irregular steel bridge tower described above specifically includes the following steps:

[0068] (S.1) Using drawing and modeling software, the planar dimensions of the inner wall panel 6 and outer wall panel 7 of each segment are determined through layout and unfolding. Then, the curvature transition points of the inner wall panel 6 and outer wall panel 7 of each segment on the tower column 1 are calculated in the drawing and modeling software to obtain hyperboloid linear data. Then, the envelope surface analysis of the inner wall panel 6 and outer wall panel 7 of each segment is performed and their bending process is simulated. Thus, processing lines are drawn on the inner wall panel 6 and outer wall panel 7 of each segment, and the curvature transition areas to be bent are segmented. Then, CNC precision blanking is performed and the sample material is fed into the hydraulic press platform. With the help of a specially made bending die, multi-point flexible bending is performed along the segmented bending areas and the drawn processing lines. The bending is performed by controlling the depth stroke of the hydraulic press along the processing lines each time. During the processing, a curvature template is used for inspection, and the length and width dimensions of the inner wall panel 6 and outer wall panel 7 of each segment are measured to ensure that they match the adjacent inner wall panel 6 and outer wall panel 7. High-precision measuring equipment was used to measure key control points such as curvature transition points, ridge curvature points, and edge curvature points of each segment of the inner wall panel 6 and outer wall panel 7, and finally, the curvature was corrected. After meeting the accuracy and acceptance requirements, the hydraulic press platform was lowered to obtain several outer wall panel curved surface units 16 for splicing to obtain the outer wall panel 7 and inner wall panel curved surface units 17 for splicing to obtain the inner wall panel 6.

[0069] (S.2) Install the assembly jig. Position each outer wall panel curved surface unit 16 obtained in step (S.1) according to the processing line and hoist it onto the assembly jig for temporary fixation to limit the deformation of each outer wall panel curved surface unit 16 during the splicing process. Then, position and assemble the outer wall panel ribs 12 on the inner surface of the outer wall panel curved surface unit 16. After checking and correcting with a special template and feeler gauge, weld and fix it to obtain the outer wall panel 7 with the outer wall panel ribs 12 and the inner surface of the outer wall panel curved surface unit 16 in contact.

[0070] (S.3) Position each diaphragm 10 according to the processing line and hoist it onto the outer wall panel 7 in step (S.3), so that the ribs 12 of each outer wall panel pass through the corresponding through holes 11 on each diaphragm 10. Use a square and a specially made template to check and adjust the perpendicularity between each diaphragm 10 and the outer wall panel 7. Then, spot weld each diaphragm 10 to the outer wall panel 7 and weld temporary diagonal braces on both sides of each diaphragm 10 to improve the stability of the diaphragm 10. Then, complete the welding of the diaphragm 10 before the receiving cavity 8 set inside the steel bridge tower on the inner wall panel 6, thereby reducing the amount of welding work in the narrow space and reducing the safety risks of welding in the narrow space. Finally, the outer wall panel 7 with the diaphragm 10 completely fixed to the outer wall panel 7 is obtained.

[0071] (S.4) Install inner wall plate ribs 13 on the transverse diaphragm 10 in step (S.3), attach each inner wall plate curved surface unit 17 obtained in step (S.1) to the transverse diaphragm 10 at the corresponding position, and weld each inner wall plate curved surface unit 17 to the inner wall plate rib 13. After the overall dimensions are inspected and qualified, perform overall welding to obtain the tower column 1.

[0072] (S.5) Repeat steps (S.1) to (S.4) to weld and fix the other tower columns 1;

[0073] (S.6) Weld a support platform 14 connected to the inner wall plate 6 on each tower column 1 in the middle layer 3 of the steel bridge tower. Weld the top and bottom of the adjacent tower columns 1 to obtain the main body of the steel bridge tower. Then install the tower cap 15 on the top of the main body of the steel bridge tower to obtain the petal-shaped hyperboloid irregular steel bridge tower.

[0074] As another implementation method, before each inner wall panel curved surface unit 17 is installed, in order to ensure the continuity of the intersection between each inner wall panel curved surface unit 17 and the corresponding outer wall panel curved surface unit 16, it is necessary to install a limiting baffle (to be removed later) on the inner surface of the outer wall panel 7 where there is no transverse partition 10. Then, each inner wall panel curved surface unit 17 is attached to the corresponding transverse partition 10 and the limiting baffle, and the welding gap between each inner wall panel curved surface unit 17 and the outer wall panel 7 is finely adjusted. Then, each inner wall panel curved surface unit 17 is spot welded to the inner wall panel rib 13. After the overall dimensions are inspected and approved, the overall welding work is carried out to obtain the tower column 1.

[0075] The specific steps for assembling the jig frame in step (S.2) are as follows:

[0076] Based on the overall structural shape of the petal-shaped hyperboloid irregular steel bridge tower, an assembly jig for the petal-shaped double-limb outer wall panel curved surface unit 16 is manufactured. The base of the assembly jig is fixed to the ground, and steel supports of different heights are installed at intervals on the base of the assembly jig according to the hyperboloid line data obtained in step (S.1). The steel supports include vertically arranged longitudinal steel supports and horizontally arranged transverse steel supports, thus forming a transverse and longitudinal three-dimensional frame support system. Curvature templates are installed at intervals on the transverse and longitudinal three-dimensional frame support system.

[0077] In another implementation, the radius of curvature of the inner surface of the curvature template is the same as the curvature of the outer surface of the outer wall panel surface unit 16 at the corresponding position.

[0078] By installing a horizontal and vertical three-dimensional frame support system, the continuity and stability of the entire assembly jig system are ensured, while further improving the structural rigidity of the jig base. Setting a curvature template with a specific radius of curvature ensures that the outer curved surface of the outer wall panel unit 16 is in close contact with the inner curved surface of the curvature template, effectively improving the accuracy of the curvature template. This makes the manufacturing process of the outer wall panel unit 16 more efficient and precise, further enhancing the construction safety and reliability of the petal-shaped hyperboloid irregular steel bridge tower.

[0079] The welding method in steps (S.1) to (S.4) is horizontal welding.

[0080] Because the steel bridge towers are manufactured using symmetrical horizontal assembly and employ parallel welding, the weld strength is high, the sealing is excellent, and the weld joints are more aesthetically pleasing. Furthermore, parallel welding is faster, which helps improve production efficiency and reduce production costs. In addition, parallel welding does not require additional welding equipment and manpower, further reducing welding costs.

[0081] As another implementation method, in order to reduce the deformation of the outer wall panel curved unit 16 caused by welding during the positioning welding process of the outer wall panel rib 12, the welding and fixing between the outer wall panel rib 12 and the outer wall panel curved unit 16 is carried out from the middle to both sides.

[0082] The above description is merely a detailed explanation of preferred embodiments and principles of the present invention. For those skilled in the art, there may be changes in specific implementation methods based on the ideas provided by the present invention, and these changes should also be considered within the scope of protection of the present invention.

Claims

1. A method for manufacturing a petal-shaped hyperboloid irregular steel bridge tower, characterized in that, The petal-shaped hyperboloid irregular steel bridge tower includes several tower columns (1). The tops and bottoms of adjacent tower columns (1) are fixedly connected, while the middle parts of adjacent tower columns (1) are not connected to each other, thus dividing the petal-shaped hyperboloid irregular steel bridge tower into an upper layer (2), a middle layer (3), and a lower layer (4). The cross-sectional area of ​​the middle layer (3) is larger than that of the upper layer (2) and the lower layer (4). Adjacent tower columns (1) enclose each other to form a cavity (5) that is connected from top to bottom. Each tower column (1) includes an inner wall panel (6) and an outer wall panel (7) that are both curved. The inner wall panel (6) and the outer wall panel (7) enclose each other to form a receiving cavity (8). (8) has a number of ribs (9) arranged radially on its inner wall, and a number of transverse partitions (10) are also arranged inside the cavity (8). The transverse partitions (10) are fixedly connected to the ribs (9). The transverse partitions (10) are provided with through holes (11) for the ribs (9) to pass through. The ribs (9) include outer wall ribs (12) symmetrically arranged along the outer wall plate (7) and inner wall ribs (13) fixedly connected to the inner wall plate (6). The middle layer (3) of the steel bridge tower is provided with a support platform (14) connected to the inner wall plate (6) on each tower column (1). The top of the upper layer (2) of the steel bridge tower is provided with a tower cap (15). The manufacturing method of the petal-shaped hyperboloid irregular steel bridge tower includes the following steps: (S.1) Obtain the hyperboloid line data of the tower column (1), and divide the inner wall plate (6) and outer wall plate (7) according to the hyperboloid line data to obtain a number of outer wall plate curved surface units (16) for splicing to obtain the outer wall plate (7) and inner wall plate curved surface units (17) for splicing to obtain the inner wall plate (6). (S.2) Install the assembly frame, hoist each outer wall panel curved surface unit (16) obtained in step (S.1) onto the assembly frame for temporary fixation, then assemble the outer wall panel ribs (12) and verify and weld them to obtain an outer wall panel (7) in which the outer wall panel ribs (12) and the outer wall panel curved surface unit (16) fit together. (S.3) Hoist each diaphragm (10) onto the outer wall panel (7) in step (S.2) so that each outer wall panel rib (12) passes through the corresponding through rib hole (11) on each diaphragm (10). After verification, weld and fix it to obtain an outer wall panel (7) where the diaphragm (10) and the outer wall panel (7) are completely fixed. (S.4) Install inner wall plate ribs (13) on the transverse diaphragm (10) in step (S.3), attach each inner wall plate curved surface unit (17) obtained in step (S.1) to the transverse diaphragm (10) at the corresponding position, and weld and fix each inner wall plate curved surface unit (17) to the inner wall plate rib (13) to obtain the tower column (1); (S.5) Repeat steps (S.1) to (S.4) to weld and fix the other tower columns (1); (S.6) Weld a support platform (14) connected to the inner wall plate (6) on each tower column (1) in the middle layer (3) of the steel bridge tower. Weld the top and bottom of the adjacent tower columns (1) to obtain the main body of the steel bridge tower. Then install the tower cap (15) on the top of the main body of the steel bridge tower to obtain the petal-shaped hyperboloid irregular steel bridge tower.

2. The method for manufacturing a petal-shaped hyperboloid irregular steel bridge tower according to claim 1, characterized in that, The specific steps for assembling the jig in step (S.2) are as follows: The assembly frame base is fixed, and steel supports are installed at intervals on the assembly frame base according to the hyperboloid line data obtained in step (S.1) to form a horizontal and vertical three-dimensional frame support system. Curvature templates are installed at intervals on the horizontal and vertical three-dimensional frame support system.

3. The method for manufacturing a petal-shaped hyperboloid irregular steel bridge tower according to claim 1, characterized in that, The welding method in steps (S.1) to (S.4) is horizontal welding.

4. The method for manufacturing a petal-shaped hyperboloid irregular steel bridge tower according to claim 1, characterized in that, The number of tower columns (1) is at least two and adjacent tower columns (1) are arranged symmetrically.

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