FBG应变传感器在隧道长期健康监测中的应用

隧道结构长期运营安全监测需要采用长效性好的传感测试技术，近年发展起来的光纤光栅传感器是一种数字式的光纤传感技术，具有长期稳定性好、测量精度高和适宜远程监测等优点。将光纤光栅传感器应用于厦门翔安隧道结构健康监测系统，实现了对二次衬砌混凝土应变的长期监测。结果表明光纤光栅传感器测量数据稳定可靠，监测效果良好。

Application of Optical Fbg Sensors to Long Term Health Monitoring for Tunnel

The perennial sensing and measuring technology is needed by tunnel structure safety monitoring for long term operation. In recent years Fiber Bragg Grating （FBG） sensors was developed and applied for its predominant advantages such as long term stability, high accuracy, resistance to electromagnetic interference, and remote monitoring ability. The successful application of FBG concrete strain sensor to Xiamen xiang＇an tunnel structural health monitoring project, which implemented the long term monitoring, showed FBG sensor data is stable and its monitoring effect is superior to the traditional sensors.