A processing and manufacturing technology for a cross-shaped half-box steel tower segment

Abstract

The application relates to a day-shaped half-box type steel tower segment machining process, which is characterized by the following specific machining process: S1, plate unit manufacturing; S2, bottom plate assembly; S3, side plate structure assembly; S4, web plate unit assembly; S5, vertical stiffened plate unit assembly; S6, half partition plate unit assembly; and S7, double-rib plate assembly. The side plate structure is divided into two sections, namely three-rib plate and two-rib plate. After the partition plate unit is welded during the assembly process, the three-rib plate can be directly welded to the web plate unit, and finally, the two-rib plate is welded. The welding mode divides the side plate structure into two sections to be welded, changes the original sequence of welding the web plate first and then welding the side plate, on the one hand guarantees the welding precision of the web plate unit, and on the other hand, the two-section side plate structure can effectively reduce the internal stress generated in the welding process of the integral side plate structure, and improves the overall machining efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of steel tower segment processing, and particularly to a processing and manufacturing process for a daily-shaped semi-box steel tower segment. Background Art

[0002] In large bridges, such as in the construction of super-large cable-stayed steel structure bridges, the structure volume of the cable tower, that is, the steel tower, is relatively large, and there are certain construction difficulties in the overall construction. Generally, the steel tower is divided into multiple segments, and the installation of the steel tower is completed by first manufacturing the segments and then connecting them integrally.

[0003] In a common daily-shaped semi-box steel tower segment, the side plate structure is generally an integral structure. When the side plate is installed on the bottom plate, it is directly welded integrally, and the side is not segmented. In this processing and manufacturing, it is very inconvenient to install the web plate. Moreover, in the welding sequence of the side plate structure and the web plate unit, it is necessary to first weld the web plate unit and then weld the side plate. Even with such an operation, the perpendicularity error between the side plate and the bottom plate will be relatively large, and there will be relatively large welding internal stress in the side plate structure during welding. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a processing and manufacturing process for a daily-shaped semi-box steel tower segment, which can solve the problems that the partition plate unit is inconvenient to install due to the fact that the side plate of the general daily-shaped semi-box steel tower segment does not adopt the segmented welding and installation method, and there is relatively large internal stress in the integral side plate after welding.

[0005] To solve the above technical problems, the technical solution of the present invention is: A processing and manufacturing process for a daily-shaped semi-box steel tower segment, the innovation of which is as follows: The specific manufacturing process is as follows:

[0006] S1: Manufacture of plate units: The plate units include panel plate units, web plate units, partition plate units, and vertical stiffener plate units; The panel plate units include double-rib panels, triple-rib panels, and five-rib panels; The web plate units are provided with notches, and five rib plates are welded on the web plate units; The partition plate units are provided with through holes in the center, and stiffening rings are welded at the through holes, and stiffening plates are welded on both sides of the stiffening rings on the partition units; The vertical stiffener plate units include triple-rib vertical stiffeners and double-rib vertical stiffeners;

[0007] S2: Assembly of the bottom plate: First, lift the five-rib panel onto the assembly jig, and then vertically weld the partition plate unit onto the five-rib panel;

[0008] S3: Assembly of the side plate structure: First, lift two triple-rib panels onto the assembly jig, and then weld and arrange them perpendicularly to both sides of the five-rib panel. The triple-rib panels are perpendicular to the partition plate unit, and the rib plates on the triple-rib panels are welded and connected to the side surfaces of the partition plate units;

[0009] S4: Assembly of the web plate unit: Lift the web plate unit onto the assembly jig. The web plate unit is placed on top of the partition plate unit, and the side with five ribs on the web plate unit faces upward. The lower surface of the web unit is welded to the top of the partition plate unit; both sides of the web plate unit are welded to the top of the side plate;

[0010] S5: Assembly of the vertical stiffening plate unit: Lift the vertical stiffening plate unit onto the assembly jig; The three-rib vertical stiffening plate is perpendicular to the direction of the partition plate unit and is arranged between the five-rib panel and the web plate unit; The two-rib vertical stiffening plate is arranged perpendicular to the web plate unit at the position corresponding to the three-rib vertical stiffening plate on the top of the web plate unit;

[0011] S6: Assembly of the half partition plate unit: Divide the partition plate unit into two halves, and weld one half perpendicular to the two-rib vertical plate and perpendicular to the web plate unit;

[0012] S7: Assembly of the double-rib panel: Lift a pair of double-rib panels onto the assembly jig. The double-rib panels are arranged on top of the three-rib panel corresponding to the three-rib panel, and the ribs of the double-rib panels are welded to the side of the half partition plate unit.

[0013] Furthermore, the fillet weld requirements between the partition plate unit and the five-rib panel are double-sided fillet welds with a leg size of 12 mm; the fillet weld requirements between the partition plate unit and the rib are double-sided fillet welds with a leg size of 12 mm.

[0014] The advantages of the present invention are as follows:

[0015] 1) In the present invention, the side plate structure is divided into two sections, namely the three-rib panel and the two-rib panel; during the assembly process, after welding the partition plate unit, the three-rib panel can be directly welded and then the web plate unit; finally, the two-rib panel is welded; this welding method divides the side plate structure into two sections for welding, changing the original order of first welding the web and then the side plate. On the one hand, it ensures the welding accuracy of the web plate unit; on the other hand, the two-section side plate structure can effectively reduce the internal stress generated during the welding process of the integral side plate structure; improving the overall processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0017] Figure 1 It is a process flow diagram of the processing and manufacturing of a day-shaped semi-box steel tower segment of the present invention.

[0018] Figures 2 to 7 It is a state diagram of the processing and manufacturing of a day-shaped semi-box steel tower segment of the present invention. SPECIFIC EMBODIMENTS

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0021] As Figures 1 to 7 shown, a processing and manufacturing process for a day-shaped semi-box steel tower segment is as follows:

[0022] S1: Fabrication of plate units: The plate units include panel plate units, web plate units, diaphragm plate units, and vertical stiffener plate units; the panel plate units include double-ribbed panels, triple-ribbed panels, and five-ribbed panels; the web plate units are provided with gaps, and five rib plates are welded on the web plate units; through holes are opened in the center of the diaphragm plate units, and stiffening rings are welded at the through holes, and stiffening plates are welded on both sides of the stiffening rings on the diaphragm units; the vertical stiffener plate units include triple-ribbed vertical stiffeners and double-ribbed vertical stiffeners.

[0023] S2: Assembly of the bottom plate: First, lift the five-ribbed panel onto the assembly jig, and then vertically weld the diaphragm plate unit to the five-ribbed panel.

[0024] S3: Assembly of the side plate structure: First, lift two triple-ribbed panels onto the assembly jig, and then weld them vertically on both sides of the five-ribbed panel. The triple-ribbed panels are perpendicular to the diaphragm plate unit, and the rib plates on the triple-ribbed panels are welded to the sides of the diaphragm plate unit.

[0025] S4: Assembly of the web plate unit: Lift the web plate unit onto the assembly jig. The web plate unit is placed on the top of the diaphragm plate unit, and the side with five rib plates on the web plate unit faces upward. The lower surface of the web unit is welded to the top of the diaphragm plate unit; both sides of the web plate unit are welded to the top of the side plates.

[0026] S5: Assembly of the vertical stiffener plate unit: Lift the vertical stiffener plate unit onto the assembly jig; the triple-ribbed vertical stiffener is arranged between the five-ribbed panel and the web plate unit perpendicular to the diaphragm plate unit; the double-ribbed vertical stiffener is arranged at the top of the web plate unit perpendicular to the web plate unit corresponding to the position of the triple-ribbed vertical stiffener.

[0027] S6: Assembly of the half-diaphragm plate unit: Divide the diaphragm plate unit into two halves, and weld one half perpendicular to the second rib vertical plate and the web plate unit.

[0028] S7: Assembly of double-ribbed panels: Hoist a pair of double-ribbed panels onto the assembly jig. The double-ribbed panels are positioned on the top of the three-ribbed panels, and the ribs of the double-ribbed panels are welded to the sides of the half-partition plate unit.

[0029] The fillet weld between the partition plate unit and the five-rib panel must be a double-sided fillet weld with a weld leg of 12mm; the fillet weld between the partition plate unit and the rib plate must also be a double-sided fillet weld with a weld leg of 12mm.

[0030] Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A manufacturing process for a segment of a semi-box-shaped steel tower, characterized in that: The specific manufacturing process is as follows: S1: Fabrication of plate units: Plate units include face plate units, web plate units, partition plate units, and vertical stiffening plate units; face plate units include double-ribbed face plates, triple-ribbed face plates, and five-ribbed face plates; web plate units have notches and five ribs are welded on them; partition plate units have through holes in the center and stiffening rings are welded at the through holes, and stiffening plates are welded to both sides of the stiffening rings on the partition plate units; vertical stiffening plate units include triple-ribbed vertical stiffening plates and double-ribbed vertical stiffening plates. S2: Assembly of the base plate: First, hoist the five-rib panel onto the assembly jig, and then weld the partition plate unit vertically onto the five-rib panel; S3: Assembly of side panel structure: First, hoist the two three-rib panels onto the assembly jig, then weld the three-rib panels perpendicular to the two sides of the five-rib panel. The three-rib panels are perpendicular to the partition plate unit, and the ribs on the three-rib panels are welded to the sides of the partition plate unit. S4: Assembly of the web plate unit: The web plate unit is hoisted onto the assembly jig, and the web plate unit is placed on top of the partition plate unit, with the side of the web plate unit having five ribs facing upwards. The lower surface of the web plate unit is welded to the top of the partition plate unit; the two sides of the web plate unit are welded to the top of the side plate. S5: Assembly of vertical stiffening plate unit: Hoist the vertical stiffening plate unit onto the assembly jig; the three-rib vertical stiffening plate is perpendicular to the direction of the partition plate unit and is set between the five-rib panel and the web plate unit; the two-rib vertical stiffening plate is positioned at the top of the web plate unit, corresponding to the position of the three-rib vertical stiffening plate, and is perpendicular to the direction of the web plate unit. S6: Assembly of the half-diaphragm plate unit: Divide the diaphragm plate unit into two halves, and weld one half perpendicular to the second rib vertical plate and perpendicular to the web plate unit. S7: Assembly of double-ribbed panels: Hoist a pair of double-ribbed panels onto the assembly jig. The double-ribbed panels are positioned on the top of the three-ribbed panels, and the ribs of the double-ribbed panels are welded to the sides of the half-partition plate unit. The fillet weld between the partition plate unit and the five-rib panel is required to be a double-sided fillet weld with a weld leg of 12mm; the fillet weld between the partition plate unit and the rib is required to be a double-sided fillet weld with a weld leg of 12mm.

Images