Truss arch bridge suspender safety monitoring system and method based on image recognition technology

Abstract

The invention relates to a truss arch bridge suspender safety monitoring method and system based on an image recognition technology, and the method comprises the following steps: providing a marking part, and enabling the marking part to be attached to a suspender; providing a binocular camera, and shooting the marking piece on the suspender through the binocular camera to obtain video data; extracting corresponding image data from the video data, and identifying a marker in the image data based on an image identification technology to obtain horizontal displacement of the marker; obtaining atime history curve of the marking piece according to the horizontal displacement of the marking piece and the corresponding time information; calculating the fundamental frequency of the suspender byusing the time-history curve of the marking piece; and calculating the boom force according to the fundamental frequency. According to the suspender safety monitoring method, the problem of high hardware equipment cost can be greatly solved. Besides, the measurement precision of the binocular camera can collect tiny vibration of the suspender, so that the safety index of the suspender is obtained,and the test range of the suspender is wide.

Description

technical field [0001] The invention relates to the technical field of bridge structure safety, in particular to a truss arch bridge suspender safety monitoring system and method based on image recognition technology. Background technique [0002] The truss arch bridge is particularly favored by design and selection because of its reasonable force and beautiful appearance. The main and key load-bearing member of the truss arch bridge is the suspender. Due to the small mass, small damping, and high flexibility of the boom, it is easy to vibrate under the action of wind, rain and traffic alternating loads, causing fatigue effects, and fatigue fractures may occur. Vibration fatigue of suspenders in arch bridges is a common form of local damage to bridge structures. If not dealt with in time and allowed to develop, it will first cause the suspender wires to break, which in turn will lead to redistribution of internal forces, and may eventually lead to extreme extremes of succes...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of the prior art, provide a truss arch bridge suspender safety monitoring system and method based on image recognition technology, and solve the problems of high cost and large amount of data processing in the existing sensor detection

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