基于无人机倾斜摄影的钢箱梁桥三维精细化巡检研究OA

In response to the problems of inspecting the structural health of large-span steel box girder bridges,which are char-acterized by difficulties,low efficiency,and limited workspace,a refined inspection mode combining a five-way flight route three-dimensional model with bridge-side aerial was proposed,with the Chongqi Bridge serving as the research subject.This approach involved the establishment of an initial three-dimensional real-scene model of the steel box girder bridge through the use of five-flight paths.Key points of interest on the bridge structure were marked,and DJI Terra software was employed to program the flight paths and real-time actions of UAV(unmanned aerial vehicle).Subsequently,a comprehensive three-dimensional refined inspection of the bridge was conducted.Research results indicate that conducting refined inspections based on three-dimensional real-scene models enables precise positioning and focused monitoring of defects in critical areas,enhancing the targeting and effectiveness of data collection,and building a foundation for subsequent surface defect image rec-ognition and grading evaluation.