基于地面三维激光扫描的桥梁挠度变形测量  

The Test on Bridge Deflection Deformation Monitoring by Terrestrial Laser Scanning

作　　者：徐进军[1,2] 郭鑫伟 廖骅 张洪波[1] 

机构地区：[1]武汉大学测绘学院,武汉市珞喻路129号430079 [2]地球空间信息技术协同创新中心,武汉市珞喻路129号430079

出　　处：《大地测量与地球动力学》2017年第6期609-613,共5页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金(41274021)~~

摘　　要：将地面三维激光扫描技术应用到桥梁挠度变形测量。针对桥底面点云的具体特点,采用点云拟合计算方法和重心计算方法,分别获取不同荷载情况下的桥底挠度变化,并进行对比分析,初步确定其变形测量精度,验证了该技术在桥梁挠度变形测量中的可行性。This paper examines bridge deflection measurement. Against the characteristics of the point cloud at the bottom surface of the bridge, two methods： fitting calculation and center of gravity calculation,are used to obtain the deflection change of the bridge under different loadings. The results are compared and analyzed and the preliminary measuring precision of this technology is confirmed. The experiment also verifies the feasibility of this technology in bridge deflection measurement.

关 键 词：三维激光扫描 点云拟合 点云重心 桥梁挠度 变形监测 

分 类 号：P258[天文地球—测绘科学与技术]