Automatic Alignment Monitoring Technologies for Kilometer-level Rail-cum-Road Bridges Based on Multi-source Sensor Data
Alignment monitoring is an effective measure to ensure the safe operation of long span rail-cum-road bridge.Bridge deformation monitoring based on terrestrial surveying has long monitoring cycles and heavy workloads,making it difficult to achieve real-time monitoring due to limitations in monitoring frequency.In view of this,an automated bridge alignment monitoring technology based on GNSS(Global Navigation Satellite System)as the core of multi-source sensor data was in this paper.Through its application in the kilometer-level span of the Shanghai-Suzhou-Hangzhou Rail-cum-Road Yangtze River Bridge,it demonstrates that the monitoring scheme is reasonable and feasible,with an accuracy reaching the centimeter level(horizontal±15 mm,elevation±30 mm).It has the advantages of all-weather real-time monitoring,instantaneous extreme value monitoring,and alarm capabilities,providing technical support for routine maintenance.
rail-cum-road bridgeautomated monitoringexperimental researchdynamic alignment of bridgesGNSS dynamic relative positioning
万方数据
维普
