防灾减灾工程学报2017，Vol.37Issue(2)：280-287,8.DOI:10.13409/j.cnki.jdpme.2017.02.015
基于光纤Bragg光栅传感的地铁拱顶沉降监测研究
Study of Settlement Monitoring of Metro Tunnel Based on Fiber Bragg Grating Sensing
摘要
Abstract
By analyzing the distribution and the corrosion model of stray current for metal pipeline in the case of bilateral power supply to two trains,we obtain the corrosion model of stray current on metal pipe.On the basis of analyzing the process of the concrete cracking of the vault,the influence of stray current on the vault settlement of tunnel is studied.In order to realize the real time monitoring of tunnel vault settlement,a new monitoring method based on Fiber Bragg Grating sensor is proposed.On the basis of the method,we use matched grating demodulation and the vault settlement parameters are identified via matching grating demodulation.According to these parameters,a settlement model is built.Finally,the correctness of the model is tested by simulation.关键词
杂散电流/腐蚀模型/光纤光栅传感/应变变化/沉降监测Key words
stray current/corrosion model/fiber grating sensing/strain variation/settlement monitoring分类
交通工程引用本文复制引用
姜甜甜,郝真真,钟伟,黄元亮,钱清泉..基于光纤Bragg光栅传感的地铁拱顶沉降监测研究[J].防灾减灾工程学报,2017,37(2):280-287,8.基金项目
广东省科技计划项目(2013B010401019)、珠海市公共平台项目(2013D0501990002)资助 （2013B010401019）
