基于北斗高精度技术的大型桥梁健康监测

Health Monitoring of Large Bridges Based on Beidou High-precision Technology

北斗高精度技术已在大型桥梁健康监测中应用,文章对北斗卫星系统的组成、坐标系和时间系统进行了介绍,阐述了桥梁变形监测的水平位移、沉降量、主梁挠度和桥塔变形等内容,对北斗技术桥梁健康监测系统进行了设计,总结了影响变形监测精度的原因和消除方法,最后以汉江大桥为例,提出了大型桥梁监测布置方案,以期为桥梁的安全运营提供参考。

Beidou high-precision technology has been applied in the health monitoring of large bridges.This paper introduces the composition,coordinate system and time system of Beidou satellite system,expounds the horizontal displacement,settlement,main beam deflection and bridge tower deformation of bridge deformation monitoring,designs the bridge health monitoring system with Beidou technology,and summarizes the causes that affect the accuracy of deformation monitoring and elimination methods.Finally,taking Hanjiang Bridge as an example,the monitoring layout scheme of large bridges is put forward in order to provide reference for the safe operation of bridges.