Design of Software and Hardware for Large Bridge Deformation Monitoring System

Aiming at the technical problems of realizing all-weather, full-automatic, high-precision and high-reliability on-line 3D deformation monitoring and early-warning of bridges, taking Wuhan Baishazhou Yangtze River Bridge as an example, a 3D deformation monitoring and early-warning system for bridges with real-time monitoring, intelligent alarm, advanced prediction and dynamic evaluation based on GNSS / GIS high-precision fusion positioning technology is developed. The experimental results show that the monitoring system can realize the functions of unmanned collection, fast and safe transmission, automatic solution processing and visual early warning of 3D deformation information of Baishazhou bridge, and achieve the deformation positioning accuracy of real-time centimeter level and afterwards millimeter level, which can provide decision support for bridge management.