Steel bridge simulation pre-assembly method integrating ground type laser scanning and handheld type laser scanning

• Main Authors: LUO BOREN, ZHANG JIE, XU QIAO, LONG HAI, CHEN JINZHOU, LIU DEQIANG, WU YOUYU, YU FEI
• Format: Patent
• Language: Chinese; English
• Published: 12.04.2022
• Subjects: CALCULATING; COMPUTING; COUNTING; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; PHYSICS

The invention provides a steel bridge simulation pre-assembly method fusing ground type and handheld type laser scanning. The method comprises the following steps that point cloud data including contour information of pre-assembled steel box girder block sections are obtained through a ground type laser scanner; acquiring point cloud data including interface details and splicing surface information of the pre-assembled steel box girder block sections through a handheld laser scanner; performing point cloud data fusion on the point cloud data acquired by the ground laser scanner and the handheld laser scanner; extracting coordinates of the simulated pre-assembly key points; performing adaptive downsampling on the fused point cloud data to generate sparse point clouds of the steel box girder blocks; based on the sparse point cloud of the steel box girder block section, completing three-dimensional modeling of the steel box girder block section; a complete three-dimensional model of the steel box girder bridge i