北斗卫星导航系统在桥梁顶推施工监控中的应用研究

Research on Application of Beidou Satellite Navigation System in Monitoring of Bridge Jacking Construction

桥梁在顶推施工过程中,位置不断发生改变,使得桥梁结构变形和轴线偏位情况极其复杂,需要对其进行监测控制。而传统的桥梁结构变形和轴线偏位监测是采用全站仪和经纬仪进行,受外界环境和人为因素影响大。本文以实际工程为例,采用北斗卫星导航系统对桥梁顶推施工过程中的结构变形和轴线偏位进行监控,对顶推施工过程进行了仿真分析,确定了桥梁结构的理论变形情况。依托北斗卫星导航系统设计了施工监控方案,对监测数据进行分析,发现北斗监测系统应用效果良好。北斗卫星导航系统为我国自主研发,本次工程应用不仅推动了其在国内的民用发展,也为此类桥梁施工监控积累了经验,提供了借鉴。

In the process of bridge jacking,the position of the bridge is constantly changing,which makes the deformation of the bridge structure and the axis deviation extremely complicated,and needs to be monitored and controlled.The traditional monitoring of bridge structure deformation and axis deviation are carried out by using total stations and theodolites,which are greatly affected by the external environment and human factors.Taking the actual project as an example,this paper uses Beidou satellite navigation system to monitor the structural deformation and axis deviation during the bridge jacking construction.The simulation analysis of the jacking construction process is carried out,and the theoretical deformation of the bridge structure is determined.Relying on the Beidou satellite navigation system,a construction monitoring plan was designed,and the monitoring data was analyzed.The Beidou satellite navigation system is independently researched and developed by our country and it was found that the Beidou monitoring system has a good application effect.The application of this project not only promotes the civil development of Beidou satellite navigation system in China,but also accumulates experience and provides a reference for this type of bridge construction monitoring.