Wave web steel arch structure
A wavy web and wavy technology, applied in the field of new wavy web steel arch structures, can solve the problems of waste of leftover materials, low utilization rate of plates, local buckling, etc., and achieve convenient forming and processing processes and high buckling strength. , the effect of large out-of-plane stiffness
Inactive Publication Date: 2009-08-19
TSINGHUA UNIV
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Problems solved by technology
This kind of flat web steel arch is prone to local buckling under the action of small shear stress or normal stress when the section height is large; in order to prevent premature local buckling of the web, the current common practice is to directly increase the plate thickness or Longitudinal or transverse stiffeners are arranged on both sides of the web, which will lead to a large amount of processing and waste of materials
In addition, the material used for processing the curved flat web is also very wasteful, because usually a large flat steel plate is cut in an arc shape, and the utilization rate of the remaining plate after cutting is low, resulting in a lot of waste such as leftovers
Method used
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[0014] A detailed description will be given below in conjunction with the accompanying drawings.
[0015] Such as Figure 1~5 Shown in the figure: 1-upper flange plate 2-wavy arc web 3-lower flange plate.
[0016] Such as figure 1 As shown, the blanking of the corrugated web steel arch member is very regular. Through cold bending equipment, the upper and lower flange plates can be cold bent into such figure 2 Arched as shown. The corrugation forming of the web is completed in two steps, such as image 3 As shown, in the first step, the web is folded into uniform waves, and in the second step, by adjusting the height of the upper and lower amplitudes of the web, the web can automatically form an arch, and by adjusting the height ratio of the upper and lower amplitudes of the web, different rise-span ratios can be formed The wavy curved web. The upper and lower flange plates are connected to the web by welding, and the actual processing can be completed by an automatic we...
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Abstract
The invention relates to a novel wave-shaped ventral sheet steel arch structure, belonging to the technical field of structure engineering. The steel arch structure is composed of an upper flange slab, a lower flange slab and a wave-shaped arch ventral sheet which are connected by welding; the upper flange slab and the lower flange slab are hot rolled steels; and the wave-shaped arch ventral sheet is rolled by cool bending equipment from a regular thin and plane steel sheet. The wave-shaped arch ventral sheet is a uniform wave-shaped arch ventral sheet rolled by cool bending forming equipment from a regular strip-shaped steel sheet, then waves of different ranges and depths are rolled by the cool bending forming equipment, the ventral sheet automatically bends to form an arch, and the wave-shaped arch ventral sheet of different ratios of rise to span can be formed by adjusting the depth ratio of the upper wave range and the lower wave range of the ventral sheet. The wave-shaped arch ventral sheet steel arch structure provided by the invention is convenient in forming processing of the arch ventral sheet and saves material, has high partial bending strength of the wave-shaped ventral sheet and high surface external rigidity and is an excellent arch steel structure.
Description
technical field [0001] The invention relates to a novel corrugated web steel arch structure, which belongs to the technical field of structural engineering. technical background [0002] The webs of the solid-web steel arch structures commonly used in building roof structures are usually flat webs. This kind of flat web steel arch is prone to local buckling under the action of small shear stress or normal stress when the section height is large; in order to prevent premature local buckling of the web, the current common practice is to directly increase the plate thickness or Longitudinal or transverse stiffeners are arranged on both sides of the web, which will lead to a large amount of processing and waste of materials. In addition, the material used for processing the curved flat web is also very wasteful, because usually a large flat steel plate is cut in an arc shape, and the utilization rate of the remaining plate after cutting is low, resulting in a lot of waste such ...
Claims
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IPC IPC(8): E04C3/40
Inventor 郭彦林王小安田广宇江磊鑫
Owner TSINGHUA UNIV
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