Experimental study of anchor bolt stress evaluation with hybrid optical fiber monitoring

Jinsong Fan,Qiang Yuan,Like Wei,Long Zhang,Dingding Zhang,Dingshan Zhang, Yi Wang

Optical Fiber Technology（2023）

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摘要

•We use a special FBG sensor to achieve temperature compensation.•FBG and BOTDA can function well in bolt stress monitoring.•FBG has better strain transfer ability compared to BOTDA under same situations.•BOTDA has a narrower sensing scope compared to strain gauge and FBG.•FBG is great in data accuracy, while BOTDA is good in trend performance.

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关键词

Anchor bolt, Stress distribution, Optical fiber monitoring, Strain transmission coefficient, Evaluation method

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