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| 光纤Bragg光栅应变传感器在桥梁结构监测中的应用 |
| Application of FBG strain sensors in bridge structure monitoring system |
| 投稿时间：2013-10-11 |
| DOI：10.3969/j.issn.1005-5630.2014.01.004 |
| 中文关键词: 光纤Bragg光栅 应变传感器 桥梁监测 |
| 英文关键词:fiber Bragg grating strain sensor bridge monitoring |
| 基金项目:云南省应用基础研究基金项目（KKSA201331004） |
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| 中文摘要: |
| 为了更准确了解桥梁结构变化情况，提出了一种新的检测方法。采用串联式组网方法，用光纤Bragg光栅（FBG）表面式应变传感器，对大桥左线衬砌裂缝及其长期变形进行监测。对裂缝存在区域的20个监测断面进行近一年的监测结果表明，对温度（测量记录最大温差6.4 ℃）进行补偿后，光纤Bragg光栅应变传感器的应变在正常范围内，表明在监测期桥梁结构稳定无异常变化。 |
| 英文摘要: |
| In order to more accurately understand the changes in the bridge structure, a new method of detection was proposed. Fiber Bragg grating (FBG) surface strain sensors were applied in monitoring the lining cracking and the deformation of bridge tunnel left. 20 crack sections had been monitored for nearly a year. The monitoring results indicated that after temperature (the maximum measured temperature difference was 6.4 ℃) was compensated, the strain of fiber Bragg grating strain sensor was in the normal range and indicated that the tunnel structure was in a stable and normal condition during the monitoring period. |
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