Electromagnetic field-based steel reinforcement corrosion quantification monitoring method and probe monitoring device

By generating electromagnetic fields on both sides of the reinforcing bars using probe-type monitoring equipment, and combining the magnetic field strength change rate and sensitivity correction, the problems of low accuracy and limited application scenarios in the existing technology of reinforcing bar corrosion monitoring are solved, realizing accurate quantitative analysis and wide application of reinforcing bar corrosion.

CN122385745APending Publication Date: 2026-07-14ZHEJIANG SHENGZHI ARCHITECTURAL DESIGN INST +1
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG SHENGZHI ARCHITECTURAL DESIGN INST
Filing Date
2026-06-12
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Existing electromagnetic field-based steel corrosion monitoring technologies cannot accurately reflect the true degree of corrosion of the target steel bars. They are affected by interfering steel bars, resulting in low accuracy, and the applicable scenarios of the sensors are limited.

Method used

Using probe-type monitoring equipment, electromagnetic fields are generated on both sides of the target location of the steel bar under test through the first and second probes. The rate of change of magnetic field strength is detected, and a sensitivity correction coefficient is determined based on the spacing of the steel bars to correct the theoretical sensitivity, thereby realizing quantitative analysis of steel bar corrosion.

Benefits of technology

It improves the accuracy of steel corrosion monitoring, is applicable to existing and newly built reinforced concrete structures, and can monitor any location to ensure structural safety.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122385745A_ABST
    Figure CN122385745A_ABST
Patent Text Reader

Abstract

The application relates to the technical field of civil engineering structure health monitoring, and discloses a reinforcing steel bar corrosion quantitative monitoring method based on an electromagnetic field and a probe type monitoring device, wherein the electromagnetic field is generated by a first probe and a second probe in the probe type monitoring device, and the first probe and the second probe are arranged on the two sides of a target position of a reinforcing steel bar to be measured; the method comprises the following steps: detecting the current magnetic field intensity on the two sides of the target position through the first probe and the second probe, and determining the magnetic field intensity change rate of the current magnetic field intensity relative to a preset reference magnetic field intensity; based on the reinforcing steel bar spacing between the reinforcing steel bar to be measured and an interfering reinforcing steel bar, a sensitivity correction coefficient is determined, and the theoretical sensitivity is corrected based on the sensitivity correction coefficient, wherein the theoretical sensitivity refers to the sensitivity of the magnetic field intensity change on the two sides of the target position to the reinforcing steel bar corrosion when the reinforcing steel bar is not interfered by the interfering reinforcing steel bar; and based on the magnetic field intensity change rate and the corrected sensitivity, the corrosion rate of the target position is determined. The application can achieve the technical effect of improving monitoring precision.
Need to check novelty before this filing date? Find Prior Art