Bridge concrete structure surface crack detection method and system

Abstract

The invention discloses a bridge concrete structure surface crack detection method and system, and belongs to the technical field of concrete structure surface damage detection.The method comprises the steps that an industrial unmanned aerial vehicle is remotely operated to shoot the surface of a bridge concrete structure, and a concrete surface picture is obtained; carrying out picture splicing on the obtained concrete surface pictures to obtain a panoramic image of the bridge concrete structure surface; the method comprises the steps of inputting a panoramic image of the surface of a bridge concrete structure into a CNN (Convolutional Neural Networks) model, marking an area where surface cracks exist through recognition, and finally outputting a marking completion result into the panoramic image. Compared with a traditional bridge health monitoring method, the method can achieve the quick and accurate recognition of a target through image input and image output, does not need a large amount of manpower and material resources, and is of practical engineering significance.

Description

technical field [0001] The invention relates to the technical field of bridge concrete structure damage detection, in particular to a method and system for detecting surface cracks of bridge concrete structures. Background technique [0002] my country has built large-scale concrete bridges in the process of achieving excellent results in infrastructure construction, but now the development of bridge construction has entered the maintenance and repair cycle. There are numerous cracks on the surface. If cracks appear in key parts of the structure, the bearing capacity of the bridge will be significantly reduced, and the operation of the bridge will be suspended for several weeks or even months, which will greatly reduce the efficiency of urban transportation, affect people's travel, and in severe cases may even cause the bridge to collapse and cause mass casualties. The accident poses a serious threat to the safety of pedestrians and passing vehicles on the bridge. Therefore...

AI Technical Summary

Problems solved by technology

[0003] At present, the main method of bridge inspection is still to use bridge inspection vehicles. Bridge inspection vehicles are divided into two types: folding arm type and truss type. The inspectors are sent to the bottom or side of the bridge for manual visual inspection. It consumes a lot of manpower and material resources, and the efficiency is very low. The expansion and contraction of the inspection platform of the bridge inspection vehicle is often affected by the electric poles and guardrails on the bridge side, and manual inspection is prone to safety accidents, and the inspection personnel have a high risk of operation

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