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Large-scale engineering structure deformation full-time global online monitoring device and method

A technology for structural deformation and large-scale engineering, applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems of large sensing scale, improve stability and reliability, eliminate the influence of common mode factors, and facilitate installation

Pending Publication Date: 2021-11-12
WUHAN UNIV OF TECH
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Problems solved by technology

[0008] Aiming at the technical problems of large engineering structure deformation monitoring requiring wide coverage, large sensing scale and high precision requirements, the present invention provides a full-time and global monitoring method and system based on fiber grating array sensing large engineering structure deformation

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  • Large-scale engineering structure deformation full-time global online monitoring device and method
  • Large-scale engineering structure deformation full-time global online monitoring device and method
  • Large-scale engineering structure deformation full-time global online monitoring device and method

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Embodiment Construction

[0063] The present invention will be further described with reference to the accompanying drawings.

[0064] figure 1 The full-time and all-domain online monitoring device and method for large-scale engineering structure deformation of the present invention includes: fiber grating array strain sensing optical cable 1 , fiber grating array demodulation instrument 2 , and computer 3 . The fiber grating array strain sensing optical cables 1 are continuously crossed to form N continuous deformation detection units 1-1, 1-2, 1-3, . . . , 1-N.

[0065] figure 2 For the newly repaired reinforced concrete structure, firstly fix the fiber grating array strain sensing optical cable 1 arranged in a cross on the steel bar 4, and then pour concrete to integrate the fiber grating array strain sensing optical cable 1 with the engineering structure to realize deformation. The built-in installation of the quantity sensing unit can detect the deformation state of the engineering structure in...

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Abstract

The invention discloses a large-scale engineering structure deformation full-time global online monitoring device and method, belongs to the technical field of large-scale safety monitoring, and can solve the technical problems of wide coverage range and high precision required by deformation monitoring of the large-scale engineering structure.According to the invention, a fiber grating array sensing optical cable, a fiber grating array signal demodulation instrument and a data processing unit are utilized to form a large-scale engineering structure deformation full-time global online monitoring system. Due to the fact that the sensing optical cables among the nodes are arranged in a crossed mode, differential detection is achieved, the influence of common mode factors is eliminated, the system is not sensitive to temperature and displacement in other directions, and stability and reliability of the system are effectively improved. The system is simple in structure and convenient to install, so that the system has large-scale engineering conditions.

Description

technical field [0001] The invention belongs to the technical field of structural safety monitoring, and in particular relates to a full-time global online monitoring device and method for engineering structural deformation. Background technique [0002] In recent years, my country's infrastructure projects have developed rapidly, laying a good foundation for my country's economic development. However, most of the infrastructure projects use reinforced concrete as the main structure. Under the action of complex external loads, deformation diseases such as settlement, arch collapse, staggered platform, and slippage are prone to occur, which directly affects the service life and service safety of the engineering structure. Therefore, it is urgent to find an effective detection method to grasp the health status of engineering structures in time. However, at present, most of the state inspection and maintenance of large-scale engineering structures in my country are carried out...

Claims

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Application Information

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IPC IPC(8): G01B11/16
CPCG01B11/165
Inventor 潘建军郭会勇李盛胡文彬南秋明唐健冠甘维兵王立新
Owner WUHAN UNIV OF TECH
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