三维激光扫描在桥梁检测中的应用

Application of Three-dimensional Laser Scanning in Bridge Detection

由于各种原因,一些现有的桥梁存在图纸丢失的情况。在桥梁的检测过程中,需要对桥梁的构件尺寸进行恢复。而对于悬索桥、斜拉桥、拱桥等特殊桥梁,传统的测量方法需要耗费大量人力物力,三维激光扫描逐渐成为主要的测量手段。通过三维激光扫描仪器采集点云,再通过数据处理软件对点云进行分析处理,可以在软件里测量桥梁构件的尺寸;通过对比不同时期采集的数据,还可以对桥梁进行变形监测。

Due to several reasons,drawings of some existing bridges could not be found.In the detection process of the bridges,it is necessary to restore the dimensions of bridge components.For suspension bridges,cable-stayed bridges,arch bridges and other special bridges,traditional measuring method requires a lot of manpower and material resources,which has been replaced gradually by 3D laser scanning.After acquiring and analyzing the point clouds of 3D laser scanning by data processing software,the dimensions of bridge components could be measured in software.In addition,by comparing the dates collected in different periods,the deformation of the bridges could be monitored.