Computer-assisted forming method of steel arch with wave webs

A computer-aided, wavy web technology, applied in computer control, instruments, simulators, etc., can solve problems such as web buckling deformation, large scraps, and unusability, and achieve improved out-of-plane rigidity, raised stiffness, and energy saving The effect of steel

Inactive Publication Date: 2009-09-09
TSINGHUA UNIV
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  • Abstract
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Problems solved by technology

For members with other cross-section forms, such as cross-sections with webs (such as box-shaped cross-sections, rectangular cross-sections, and I-shaped cross-sections, etc.), if cold bending or simmering is used, the material properties will be seriously damaged, or the rear web will be formed. Severe buckling deformation of the plate
This is because when the member is cold-bent or simmered into an arc shape, a large tensile pressure will be generated above and below the neutral axis of the web section to cause plastic deformation, which cannot be realized in the steel structure processing technology.
At present, for the section form that cannot be formed according to the first method, it is often used to cut the material according to the designed arc web size. This method will cause large scraps that cannot be used, resulting in a lot of waste

Method used

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  • Computer-assisted forming method of steel arch with wave webs
  • Computer-assisted forming method of steel arch with wave webs
  • Computer-assisted forming method of steel arch with wave webs

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Embodiment Construction

[0054] The invention proposes a computer-aided forming method for a corrugated web steel arch, and its computer-aided control system is divided into five control modules, which respectively correspond to the five steps of corrugated web forming. Firstly, in the first control module, that is, the blanking module, the rectangular flat web and the upper and lower flange plates are cut according to a specific size, and then the upper and lower flange plates are cold-bent into the upper and lower flange arch plates in the second control module. In the third control module, the rectangular strip web is rolled into a uniform wavy web, and then in the fourth control module, the rectangular uniform wavy web is rolled into an upper and lower non-uniform wavy arc web, along the lower wing The indentation of the web area on the side of the flange is deepened, and the indentation of the web area on the side of the upper flange is elongated, so that the web automatically forms an arch, and f...

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Abstract

The invention relates to a computer-assisted forming method of a steel arch with wave webs and belongs to the technical field of processing of the steel arch with wave webs. The invention is characterized in that under the control of a computer, the processing of arch wave webs can be completed through five stages of blanking, cold bending, rolling of uniform webs, rolling of arch wave webs and welding in sequence. In the processes of rolling of uniform webs and rolling of arch wave webs, the amplitude height of the uniform wave webs and the lower amplitude height of the arch wave webs are respectively taken as control variables. The invention has the advantages that the camber arch forming of webs is very simple and convenient, the blanking process saves steel greatly and by the application of the computer-assisted technique, the processing of components can be completed efficiently and precisely.

Description

technical field [0001] The invention relates to a computer-aided forming method for a corrugated web steel arch, and belongs to the technical field of corrugated web steel arch processing. technical background [0002] Steel arch structures are widely used in building structures and bridge structures due to their superior characteristics such as high bearing capacity. There are currently two methods for making arch components, namely (1) cold bending or bending forming; (2) completely according to the design Cutting to size. For round steel pipe members with small diameter-thickness ratio, it is feasible to cold-bend them into an arched shape, but for large-diameter-thickness ratio steel pipes, it is easy to locally buckle during cold bending, and its manufacturing method is not advisable. For members with other cross-section forms, such as cross-sections with webs (such as box-shaped cross-sections, rectangular cross-sections, and I-shaped cross-sections, etc.), if cold be...

Claims

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Application Information

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IPC IPC(8): G05B19/4097
Inventor 郭彦林王小安窦超田广宇王永海
Owner TSINGHUA UNIV
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