摘要
简要介绍了FBG(光纤布拉格光栅)传感器的性能特点和基本工作原理。将FBG传感器应用于地铁隧道混凝土管片的结构力学性能试验中,通过大型压力试验机的分级加载,把粘贴在混凝土管片表面相同部位的FBG传感器和传统电阻应变片的应变进行比较,结果表明两者试验数据吻合良好,为以FBG传感技术为核心的隧道结构健康监测系统的开发和应用提供了科学依据。
The characteristics and principle of FBG sensors are introduced briefly. After having used FBG sensors in the structural test of concrete segments of .subway tunnel in Shanghai, the strain of FBG sensors is compared with that of the strain gauges under multi-stage loading of testing machine, which are stuck to the same places of the surface of concrete segments, the result shows that the data obtained from FBG sensors tally with those from strain gauges. This provides a scientific basis for the research and application of the health-monitoring system of subway tunnel based on the FBG technology.
出处
《光纤与电缆及其应用技术》
2006年第4期24-25,38,共3页
Optical Fiber & Electric Cable and Their Applications
基金
上海市建设技术发展基金项目(A0300512)
关键词
FBG传感器
隧道混凝土管片
结构试验
应变
FBG sensor
concrete segments of subway tunnel
structural test
strain
