螺溪洲大桥主桥桁架变形监测研究

Research on Deformation Monitoring of the Main Bridge Truss of Luoxizhou Bridge

本文研究螺溪洲大桥主桥桁架的变形监测方法。首先,提出了一种基于激光扫描技术的桁架变形精准监测方法,该方法可以实时获取桥梁表面的三维几何形态信息、计算桥梁的变形量,精度高且监测范围大;其次,针对该精准监测方法的技术原理进行阐述;最后,针对实际桥梁项目,利用三维激光扫描技术对极端天气条件下桥梁变形情况进行了监测,取得了较好的应用效果。

This paper studies the deformation monitoring method of the main bridge truss of Luoxizhou Bridge.Firstly,a precise monitoring method for truss deformation based on laser scanning technology is proposed,this method can obtain real-time three-dimensional geometric information of the bridge surface and calculate the deformation of the bridge,with high accuracy and a wide monitoring range;secondly,elaborate on the technical principles of this precise monitoring method;finally,the application of 3D laser scanning technology for bridge deformation monitoring under extreme weather conditions in actual bridge projects has shown good results.