Technology study of optical fiber bragg grating anchor 
bar sensor in tunnel strain monitoring

JIANG Qi; SUI Qing-mei; ZHANG Qing-song; CUI Xin-zhuang

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Technology study of optical fiber bragg grating anchor bar sensor in tunnel strain monitoring

更新时间：2026-06-25

- Technology study of optical fiber bragg grating anchor bar sensor in tunnel strain monitoring
- Vol. 27, Issue S1, (2006)
- 作者机构：
  
  1. 山东大学控制科学与工程学院,济南,250061
  2. 山东大学土建与水利学院,济南,250061
- 作者简介：
- 基金信息：
- DOI：
  CLC： TP212
- Online First：15 December 2006，
  
  Published：2006
- 稿件说明：
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JIANG Qi, SUI Qing-mei, ZHANG Qing-song, et al. Technology study of optical fiber bragg grating anchor bar sensor in tunnel strain monitoring[J]. 2006, 27(S1).
DOI：

JIANG Qi, SUI Qing-mei, ZHANG Qing-song, et al. Technology study of optical fiber bragg grating anchor bar sensor in tunnel strain monitoring[J]. 2006, 27(S1). DOI：

摘要

针对隧道施工和运行长期监测的需要和当前的岩土监测所用电磁传感器的不足，基于分析了光纤布拉格光栅(FBG)传感监测原理和实现方法，在直径为22 mm的普通螺纹钢上设计和制作了隧道应力应变监测用的FBG锚杆传感器，并分析FBG探测锚杆轴向应变的原理。通过试验室和公路隧道现场对已制作的FBG锚杆进行动态测试与应用，效果良好，并突出了FBG锚杆传感灵敏度高、稳定性好、测量范围大、结构简单和能在野外岩土结构工程进行长期有效监测等优点。

Abstract

The principle and method of optical fiber bragg grating (FBG) sensor inspection are analyzed. According to the increasing development and requirement of tunnel construction engineering long-term testing

a kind of optical FBG sensor for diameter 22 mm anchor bar is put forward

designed

and fabricated for tunnel monitoring; because the electromagnetism sensor is not employed stably in rock and soil engineering monitoring. The axial strain of anchor bar can be detected by FBG on anchor bar easily. FBG anchor bar sensor is used in lab and highway tunnel. The experimental and practical results are both good. It is proved that FBG anchor bar sensor is of high precision on measurement

good anti-interference ability

long-term stability

simple structure

online real-time monitoring application of rock and soil

and so on.

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