Bulletin of Surveying and Mapping ›› 2024, Vol. 0 ›› Issue (2): 157-160,177.doi: 10.13474/j.cnki.11-2246.2024.0229

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Exploration of multi-source laser point cloud modeling in bridge maintenance

LIU Shuangchen, LI Shengfu, JIA Yang   

  1. Sichuan Highway Planning, Survey, Design and Research Institute Ltd, Chengdu 610041, China
  • Received:2023-08-08 Online:2024-02-25 Published:2024-03-12

Abstract: Under the influence of serious road load and secondary geological disasters, the daily maintenance of complex mountain highway bridges has brought great challenges. Using bridge 3D modeling technology to carry out online visualization, and installing monitoring equipment on key bridge sections, online monitoring of bridge health has become a new technical means. For roads and bridges that have been operating for a long time, the as-built design drawings are difficult to find and the real bridge model can not be reproduced through the drawings. Therefore, the ground-station laser and vehicle-mounted laser are combined to scan the bridges that have been operating for a long time, and the point cloud data obtained by the two methods are registered and filtered, and then the monomer modeling is carried out. Restore the real structure of the bridge. At the same time, using the highway industry BIM model standard, the components of the monomer bridge are split and coded to form a standardized bridge unit module. On this basis, GIS technology is used to develop expressway infrastructure platform, and bridge maintenance related operation modules are associated to realize online inspection and maintenance of existing expressway bridges.

Key words: multi-source LiDAR, point cloud filtering, 3D modeling, componentization, bridge maintenance

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