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Magnetic field gradient tensor-based stay cable corrosion monitoring system and method for cable-stayed bridge

A magnetic field gradient and cable-stayed bridge technology, applied in the field of measurement, can solve problems such as the inability to quantitatively monitor corrosion damage

Active Publication Date: 2019-11-15
SOUTHWEST UNIVERSITY
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Problems solved by technology

[0004] Based on this, it is necessary to address the above problems and provide a bridge erosion monitoring system and monitoring method based on variable baselines and magnetic field gradients to solve the problem that the existing magnetic memory methods can only qualitatively measure structural corrosion damage, but cannot quantitatively monitor corrosion damage. The problem

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  • Magnetic field gradient tensor-based stay cable corrosion monitoring system and method for cable-stayed bridge
  • Magnetic field gradient tensor-based stay cable corrosion monitoring system and method for cable-stayed bridge
  • Magnetic field gradient tensor-based stay cable corrosion monitoring system and method for cable-stayed bridge

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[0054] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific implementations disclosed below.

[0055] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected ...

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Abstract

The invention discloses a magnetic field gradient tensor-based stay cable corrosion damage monitoring system and method for a cable-stayed bridge. The monitoring system comprises a corrosion damage measuring probe, a data transmission system and a data control system, wherein the corrosion damage measuring probe is used for measuring the magnetic induction intensity of a stay cable and transmitting measured induction intensity information to the data transmission system through a wireless data transmission module; the data transmission system transmits the information to the data control system; and the data control system calculates a magnetic field gradient according to the magnetic induction intensity information, and further calculates the corrosion rate of the stay cable, thereby giving a safety warning to the corrosion damage of the stay cable.

Description

technical field [0001] The invention relates to the field of measurement technology, in particular to a monitoring system and monitoring method for cable corrosion damage of cable-stayed bridges based on magnetic field gradient tensor. Background technique [0002] The cable is an important part of the structural system of the cable-stayed bridge. It is the key and important stress-bearing member in the cable-stayed bridge. Components that are prone to damage or destruction. In areas with severe air pollution, areas with severe water pollution, rainwater (especially acid rain), and marine environments, the cables of cable-stayed bridges are easily corroded by environmental corrosive media. The structure has a major impact and even leads to serious catastrophic consequences, which is the bottleneck to prolong the service life of the cable-stayed bridge structure. The performance of the cables seriously affects the service life of the cable-stayed bridge structure. Therefore...

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Application Information

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IPC IPC(8): G01N27/82
CPCG01N27/82Y02A90/30
Inventor 江胜华王浩刘奥洲李豪刚
Owner SOUTHWEST UNIVERSITY
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