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A bridge deformation monitoring system and method

A deformation monitoring and bridge technology, which is applied in radio wave measurement system, satellite radio beacon positioning system, measuring device, etc., can solve the problem of inability to realize bridge millimeter-level deformation monitoring, monitoring bridge deformation, and inability to realize multi-point monitoring overlimit points Fixed-point measurement and other issues

Active Publication Date: 2020-10-30
BEIJING CNTEN SMART TECH CO LTD
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] However, none of the above methods can realize multi-point monitoring and fixed-point measurement of overrun points, and cannot realize bridge millimeter-level deformation monitoring
Moreover, the above method does not take into account the influence of track changes on bridge deformation, and does not monitor bridge deformation in combination with track changes

Method used

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  • A bridge deformation monitoring system and method
  • A bridge deformation monitoring system and method
  • A bridge deformation monitoring system and method

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Embodiment Construction

[0025] In order to realize the real-time deformation monitoring of the bridge, this application proposes a bridge deformation monitoring system, which collects the deformation data of the bridge monitoring points and the change data of the track relative to the bridge through the linkage of GNSS positioning equipment, measuring robots, lasers and inclination sensors. The millimeter-level deformation value of the bridge is calculated based on the deformation data of the bridge monitoring points, and the change data of the track relative to the bridge is fused to calculate the inclination and twist of the track.

[0026] Please refer to the attached figure 1 , the bridge deformation monitoring system 100 includes a data monitoring device 101 and a data processing device 102, wherein:

[0027] The data monitoring device 101 is used to monitor the deformation data of a plurality of bridge monitoring points, and send it to the data processing device; receive the measurement instruc...

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Abstract

The invention discloses a bridge deformation monitoring system and method. The method comprises the following steps: setting a bridge deformation limit value and a sampling frequency; acquiring deformation data of a plurality of bridge monitoring points, and calculating a deformation value of each bridge monitoring point; respectively comparing the deformation value of each bridge monitoring pointwith a set bridge deformation limit value; if the deformation value of the bridge monitoring point exceeds the set bridge deformation limit value, acquiring new deformation data, measured at a set sampling frequency fixed point, of the over-limit bridge monitoring point, and angle change data, collected at a set sampling frequency, of a plurality of tracks relative to the bridge; calculating a millimeter-scale deformation value of the bridge according to the new deformation data of the over-limit bridge monitoring point; and fusing the angle change data of the plurality of tracks relative tothe bridge, and calculating track inclination and distortion attitude data.

Description

technical field [0001] The invention relates to the technical field of bridge monitoring, in particular to a bridge deformation monitoring system and method. Background technique [0002] Existing bridges, especially railway bridges under the moving load of high-speed trains have the characteristics of real-time vibration and instantaneous deformation. At present, the main methods used in monitoring the displacement or deformation of bridge structures are GPS method, leveling method, close-range photogrammetry, laser measurement, etc. [0003] GPS monitoring technology has the characteristics of high sampling rate (20Hz) and static and dynamic monitoring. It also has its unique advantages in large-scale structure monitoring, but it also has certain limitations. Due to the influence of satellite signals being blocked and multi-roadbed effects , the monitoring accuracy and reliability are not high, and the elevation accuracy is far lower than the accuracy of the horizontal po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B21/32G01S19/14G01C5/00
CPCG01B21/32G01C5/00G01S19/14
Inventor 李宁杨翠云何英杰
Owner BEIJING CNTEN SMART TECH CO LTD
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