Transverse partition plate for controlling welding shrinkage and cross slope precision and manufacturing method thereof

Abstract

The invention provides a diaphragm plate capable of controlling welding shrinkage and cross slope precision and a manufacturing method thereof, and the manufacturing method comprises the following steps: determining a design structure of the diaphragm plate and a starting point of a process cross slope, the whole partition plate design structure is rotated downwards by the gradient of i% around the starting point of the process cross slope, the top edge of the transverse partition plate and the symmetric center line extend and intersect to obtain a transverse partition plate process structure, the length of the extension line of the top edge of the transverse partition plate in the transverse partition plate process structure is h, and the extension length of the symmetric center line is h; compensating the manufacturing width of the corresponding top plate according to the value, wherein H * i% is approximately equal to H; the end of the diaphragm plate, the starting point position of the process cross slope and the angle and the height of the bottom edge of the diaphragm plate are all the design theoretical values and are not changed; and the U rib notch spacing of the diaphragm plate is increased by the reserved process quantity A according to the design theoretical values. The problems that the plate unit assembly precision is poor and the bridge deck cross slope precision is not easy to control due to overall splicing welding deformation of the large wide steel box girder are solved.

Description

technical field [0001] The invention belongs to the technical field of manufacturing steel box girder transverse-slope type diaphragms, and in particular relates to a transverse diaphragm for controlling welding shrinkage and transverse slope accuracy and a manufacturing method thereof. Background technique [0002] With the development of my country's steel bridge manufacturing technology, in order to meet the needs of transportation and save production costs, more and more bridges across rivers and seas use steel box girder structures. Among them, the general section steel box girder slab units are divided into few blocks, the number of penetration welds is small, and the welding deformation basically has no effect on the accuracy of the steel box girder deck cross slope. Therefore, the diaphragm is made according to the theoretical size to ensure the assembly of the steel box girder structure The geometric dimension can control the cross-slope accuracy of the steel box gi...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a transverse diaphragm for controlling welding shrinkage and transverse slope accuracy and its manufacturing method, by presetting the process transverse slope of i% downward rotation, and utilizing the principle of anti-deformation, the assembly of the steel box girder can be offset The upwarping deformation caused by welding; by adding the reserved process amount A to the design theoretical value of the U-rib notch spacing of the diaphragm unit, to reasonably digest the shrinkage deformation of the U-rib notch spacing caused by the welding of the diaphragm unit; solve the problem of large-scale wide steel Poor assembly accuracy of plate elements caused by box girder assembly welding deformation and difficulties in controlling the accuracy of bridge deck cross slope

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