| 光纤光栅锚杆传感在隧道应变监测中的技术研究 |
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| 引用本文： | 蒋 奇,隋青美,张庆松,崔新壮.光纤光栅锚杆传感在隧道应变监测中的技术研究[J].岩土力学,2006,27(Z1):315-318. |
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| 作者姓名： | 蒋 奇 隋青美 张庆松 崔新壮 |
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| 作者单位： | 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 |
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| 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。
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| 关 键 词： | 隧道 光纤光栅(FBG) 锚杆 监测 |
| 收稿时间： | 2006-07-31 |
Technology study of optical fiber bragg grating anchor
bar sensor in tunnel strain monitoring |
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| JIANG Qi,SUI Qing-mei,ZHANG Qing-song,CUI Xin-zhuang.Technology study of optical fiber bragg grating anchor
bar sensor in tunnel strain monitoring[J].Rock and Soil Mechanics,2006,27(Z1):315-318. |
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| Authors: | JIANG Qi SUI Qing-mei ZHANG Qing-song CUI Xin-zhuang |
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| Institution: | 1.School of Control Science and Engineering, Shandong University, Jinan 250061, China;
2.School of Civil and Hydraulic Engineering, Shandong University, Jinan 250061, China |
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| 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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| Keywords: | tunnel fiber bragg grating anchor bar monitoring |
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