Reinforced concrete internal steel structure corrosion damage imaging device and reinforced concrete internal steel structure corrosion damage imaging method

A technology of a reinforced concrete and an imaging device, which is applied to the detection of damage to steel bars in reinforced concrete, and the imaging device for corrosion damage of steel structures in reinforced concrete, can solve the problems of complex data processing, fuzzy experimental results, etc., and achieves low complexity and hardware structure. Low cost and little damage

Inactive Publication Date: 2017-08-18
CHONGQING JIAOTONG UNIVERSITY +1
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Problems solved by technology

Based on numerous literatures, it can be seen that there are many studies on the above detection methods, but some experimental results are relatively vague, and complex post-data processing is required to obtain the detection results.

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  • Reinforced concrete internal steel structure corrosion damage imaging device and reinforced concrete internal steel structure corrosion damage imaging method
  • Reinforced concrete internal steel structure corrosion damage imaging device and reinforced concrete internal steel structure corrosion damage imaging method
  • Reinforced concrete internal steel structure corrosion damage imaging device and reinforced concrete internal steel structure corrosion damage imaging method

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Embodiment Construction

[0041] For the damage detection of steel structures inside reinforced concrete, alternating electromagnetic field detection technology is also a technical direction that can be considered. Alternating electromagnetic fields can be divided into near field and far field according to their range of action. The far-field is the electromagnetic wave in the usual sense, while the near-field does not have any radiation and cannot propagate over a long distance like electromagnetic waves. After a wavelength of propagation, it is basically attenuated to the point where it cannot be detected. However, the near-field does not obey the Rayleigh criterion and can The near-field wave breaks through the diffraction limit, and then feeds back the sub-wavelength information of the target. Based on the near-field effect theory, using the near-field effect of electromagnetic waves with longer wavelengths (such as meter waves), the propagation distance of electromagnetic waves can be judged accor...

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Abstract

The invention provides a reinforced concrete internal steel structure corrosion damage imaging device and a reinforced concrete internal steel structure corrosion damage imaging method. The device is simple in integral structural design and low in cost; by directly adoption of characteristics of high penetrability and propagation attenuation of the meter wave near field effect on dielectric materials, simplicity and directness in data processing and presenting, low complexity and easiness in implementation are realized; since near field waves can only propagate forward by an effective distance of a wavelength maximally, high locality and anti-jamming capability are realized, and imaging effects and processes are protected from influences of stray waves in general far field radar technology, and steel structure surface corrosion damage conditions can be accurately recovered and represented by reinforced concrete internal steel structure surface images obtained by imaging. In addition, owing to attenuation characteristics of near field waves, the imaging method is low in harms to testing personnel and can be widely applied to the technical field of reinforced concrete internal steel structure corrosion damage detection.

Description

technical field [0001] The invention belongs to the technical field of structural safety monitoring, and in particular relates to a detection technology for steel bar damage inside reinforced concrete, in particular to an imaging device and method for corrosion damage imaging of steel structures inside reinforced concrete. Background technique [0002] Reinforced concrete is one of the most widely used building materials in the world, and its material deterioration is mostly due to the corrosion of the internal steel skeleton. In engineering structures, the corrosion problem is still relatively serious, which will not only reduce the bearing capacity of the structure, but also cause greater damage and destruction of the structure. [0003] In the non-destructive testing process, the damage to the component is relatively small or no damage, which is the development direction of the steel damage detection. For non-destructive testing, many technologies and methods have emerge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N17/00
CPCG01N17/006
Inventor 周建庭廖棱周华文何军张洪赵瑞强夏润川赵亚宇
Owner CHONGQING JIAOTONG UNIVERSITY
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