Testing method of shearing property of waveform steel-web combination beam

A technology of corrugated steel webs and testing methods, applied in the field of bridge technology research, to achieve reliable research results

Inactive Publication Date: 2014-04-23
GUANGXI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although many specifications have been promulgated, the research on this type of new structure is far from over, and there are still many aspects that need to be discussed and analyzed in depth

Method used

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  • Testing method of shearing property of waveform steel-web combination beam
  • Testing method of shearing property of waveform steel-web combination beam
  • Testing method of shearing property of waveform steel-web combination beam

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Experimental program
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Embodiment Construction

[0034] Please refer to figure 1 and figure 2 Shown, corrugated steel web concrete composite box girder is made up of different materials among the present invention, so when calculating the shear stiffness of this type of structure, can calculate according to the following method: the shear stiffness of upper and lower concrete slabs can be Negligible, this is because the shear stiffness of the concrete slab is smaller than that of the web corrugated steel plate, and the corrugated steel web is bent from the steel plate instead of the concrete web, so only the structural web can be considered in the calculation Shear stiffness, note that the shear stiffness of the corrugated steel plate is slightly smaller than that of the flat steel web. The following formula can be used for calculation:

[0035] GA=α·G x ·A w (2-3)

[0036] In the formula: A w — the cross-sectional area of ​​the corrugated web;

[0037] G x — shear modulus of elasticity of the corrugated...

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Abstract

The invention discloses a testing method of a shearing property of a waveform steel-web combination beam. The waveform steel-web concrete combination box beam is made of different materials. When the shearing rigidness of the structure is calculated, the shearing rigidness is calculated as follows: the shearing resisting rigidness of an upper concrete plate and a lower concrete plate can be neglected, the shearing rigidness of each concrete plate is smaller compared with that of a web waveform steel plate, the waveform steel web is a steel plate substituting a concrete web, so that only the shearing rigidness of the structural web is considered in calculation, and the shearing rigidness of the waveform steel plate is slightly smaller than that of flat steel web. The shearing rigidness is calculated through the following formula as shown in description. By adopting the testing method of the shearing property of the waveform steel-web combination beam, the study on a dynamics property structure of the waveform steel web is relatively reliable.

Description

Technical field: [0001] The invention relates to a shear performance test method of a corrugated steel web composite beam, which belongs to the field of bridge technology research. Background technique: [0002] In 1990, scholars such as Hamlton and Elgaaly in the United States conducted experimental research on 21 corrugated steel web beams, mainly focusing on the failure mode of corrugated steel web composite beams and the shear resistance of the members when they were loaded. Based on the finite element analysis of similar composite structures, the model is established for numerical calculation. The analysis and calculation results lead to the following theory: the entire shear force generated under the load is borne by the web of the beam alone, that is, the corrugated steel plate, while the flange plate does not bear it. The ultimate failure mode of the composite structure is buckling failure under the action of one point of shear force, that is to say, the failure load...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/24
Inventor 王赞芝辛立凤
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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