盾构隧道近距离下穿武广高铁桥梁变形监测分析

Deformation monitoring analysis of shield tunneling at vicinity distance under Wuhan-Guangzhou high speed railway bridge

阐述了全自动桥梁变形监测原理方法,并通过全自动桥梁变形监测系统,实时监测盾构下穿高铁过程中高铁桥墩及梁体的变形。监测数据表明,盾构下穿期间桥墩及梁体变形未达到报警值,全自动监测系统为区间盾构顺利下穿高铁桥梁及时提供了变形信息反馈,确保了高铁安全正常运营。

This paper expounds the principle and method of the bridge deformation automatic monitoring,and by using the bridge deformation automatic monitoring system,it monitors in real time the deformation of the high-speed bridge pier and the beam element in the process of shield tunneling.The monitoring data shows that the deformation of the pier and the beam element during the shield tunneling is not up to the alarm value.The automatic monitoring system provides the deformation information feedback in time for the shield smooth-passing through the high-speed bridges,which ensures the safe and normal operation of the highspeed railway.