基于地面激光扫描的三山南桥载荷变形监测研究

The Research on Load-Generated Deformation Monitoring of Sanshan South Bridge Based on Terrestrial Laser Scanning

地面激光扫描技术能从复杂的实体中获取精确的3维细节信息,这对于高效的全景设计以及建模工程是至关重要的。但在变形监测领域,地面激光扫描技术的可靠性并没有被充分验证。本文结合三山南桥的载荷试验进行变形监测的研究,使用了地面激光扫描和精密水准测量的方法对其产生的变形进行了检测,重点论述了三山南桥的负载测试以及使用地面激光扫描技术对桥梁变形的观测结果,并对比分析了地面激光扫描和精密水准测量的结果,为使用激光扫描仪进行变形测量的后续应用奠定了初步基础。

People can obtain accurate 3-dimensional detailed information of complicated ground object using terrestrial laser scanning technique,which is crucial to effective landscape design and modeling engineering.However,in the area of deformation monitoring,the reliability of terrestrial laser scanning has not been fully verified.This paper studies deformation monitoring in the light of the load test of Sanshan South Bridge,measures the deformation generated using both terrestrial laser scanning technique and accurate leveling technique,focuses on the elaboration of the result of Sanshan South Bridge load test and the result of deformation observation using terrestrial laser scanning technique,compares and analyzes the result of terrestrial laser scanning technique and accurate leveling,and lays the foundation for future application of laser scanner in deformation observation.