A method for manufacturing a space curved steel member

A technology of space curve and manufacturing method, which is applied in the field of manufacturing space curve steel components, can solve the problems of difficult to achieve beautiful appearance of bridges, uneven and smooth bridge line shape, etc., and achieve low cost, increased manufacturing cost and obvious effects

Active Publication Date: 2017-12-12
CHINA RAILWAY BAOJI BRIDGE GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, the straight line was used instead of the curved line to adjust the overall line type through the joints, but the final bridge line type was often uneven. Although it did not affect the structural force, the appearance of the bridge was difficult to achieve the aesthetic requirements

Method used

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  • A method for manufacturing a space curved steel member
  • A method for manufacturing a space curved steel member
  • A method for manufacturing a space curved steel member

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Embodiment 1

[0018] Embodiment 1: with reference to attached Figure 1-5 . A manufacturing method of space curved steel components, (1) Requirements for parts production: steel plates must be pretreated to eliminate rolling stress and transport residual stress in steel plates, use three-dimensional analysis software to loft curved structures, and calculate the expansion of space curved plates Shape, combined with the manufacturing process to add flame cutting compensation amount, deformation process amount, welding process amount, etc., through high-precision numerical control flame cutting equipment to make parts; for the partition of the space curved steel component, because it is an inner tube assembled by steel components , the size should be strictly controlled and realized by mechanical processing; (2) surface forming requirements: according to the line shape of the space curve plate, the minimum curvature of the space curve plate along the length direction of the plate is analyzed a...

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Abstract

The present invention relates to a method for manufacturing a space curved steel component. (1) Parts production: use three-dimensional analysis software to stake out the curved structure, obtain the unfolded shape of the space curved plate, and increase the process quantity, and produce it through high-precision numerical control flame cutting equipment Parts; (2) surface forming requirements: analyze and calculate the minimum curvature of the plate length direction for the space curve plate, pre-bend through the roller plate equipment, and adopt the numerical control top pressure method for the feature points to make it meet the design line type requirements; (3) plate unit production requirements: in Clamp on the special tire type, assemble the stiffeners in sequence, and control the assembly gap and angle of the stiffeners. When welding, a process with a small linear energy should be used for welding; The bottom plate of the component is closely related to the tire shape, and the partitions and other panels are assembled in sequence to ensure the closeness of all parts, so as to realize the overall line shape of the structure.

Description

technical field [0001] The invention relates to a kind of box-shaped steel components such as space curved steel box girders and steel rods, which adopts the method of classification and combined application of multiple manufacturing technologies to control the space line shape of the manufactured steel components so as to make them meet the design structure requirements A method for manufacturing a space curve steel component. Background technique [0002] In recent years, the construction of urban steel structures and steel bridges has developed rapidly, especially the market for urban ramp steel bridges is increasing day by day. The structural design of urban ramp bridges mostly adopts box-type and rod structures, and the structural form is densely reinforced in a small space. It belongs to the combined line structure of plane curve, vertical curve and twisted line. [0003] At present, the manufacturing technology of steel members of plane line and vertical line is rel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 王晓辉康玉梅张亚娟李拴林雷云曹伟
Owner CHINA RAILWAY BAOJI BRIDGE GRP
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