多源激光点云建模在桥梁养护中的探索  

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

作　　者：刘霜辰 李升甫 贾洋 LIU Shuangchen;LI Shengfu;JIA Yang(Sichuan Highway Planning,Survey,Design and Research Institute Ltd,Chengdu 610041,China)

机构地区：[1]四川省公路规划勘察设计研究院有限公司,四川成都610041

出　　处：《测绘通报》2024年第2期157-160,177,共5页Bulletin of Surveying and Mapping

基　　金：四川省交通运输科技项目(2023-A-10,2023-A-14)。

摘　　要：运营已久的复杂山区高速公路桥梁在路面负荷严重、次生地质灾害的影响下,对道路日常的养护运维工作带来了很大挑战。利用桥梁三维建模技术进行在线可视化,同时在重点桥梁路段安装监测设备,在线进行桥梁健康监测成为目前新的技术手段。针对运营较长时间的道路桥梁设计竣工图纸缺失,无法通过图纸复现真实的桥梁模型,采用地面站式激光与车载激光相结合的方法,对长时间运营桥梁进行扫描,对两种方法得到的点云数据进行配准及滤波处理,然后进行单体化建模,真实还原运营桥梁的结构形态。同时,利用公路行业BIM模型标准,对单体化的桥梁进行构件拆分编码,形成规范的桥梁单元模块。在此基础上,利用GIS技术开发高速公路基础设施平台,关联桥梁养护相关作业模块,实现既有高速公路桥梁线上巡检养护。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.

关 键 词：多源激光雷达 点云滤波 三维建模 构件化 桥梁养护 

分 类 号：P237[天文地球—摄影测量与遥感]