期刊
MEASUREMENT
卷 58, 期 -, 页码 207-214出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.measurement.2014.08.013
关键词
Geotechnical structure; Structural health monitoring; Fiber Bragg Grating; Brillouin Optical Time Domain Analysis
资金
- National Basic Research Program of China (973 Program) [2013CB733201]
- Chinese Academy of Sciences [KZZD-EW-05-01]
- Hong Kong Polytechnic University [1-BB7U, 5-ZJE9, G-U960]
In recent decades, conventional electric instruments have already been widely used to monitor the performance of geotechnical structures. However, there are several inherent limitations of electric instruments for engineering including: electromagnetic interference, a large number of cables for multipoint measurement, signal loss in long distance transmission, and poor durability. Since the first Fiber Bragg Grating (FBG) sensor was fabricated in 1978, a significant progress has been made on the commercialization of optical fiber sensing technologies. In 1980s, a fully distributed sensing technology named Brillouin Optical Time Domain Analysis (BOTDA) has been proposed and developed for measuring strain and temperature. In this paper, the authors review previous studies on the development and application of fiber optic sensors. Based on the measured strains, various analysis methods were transferred to required parameters such as displacement, force and pressure which can more directly reflect the safety of geotechnical structures under complex engineering stress condition. (C) 2014 Elsevier Ltd. All rights reserved.
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