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Application of Optical Fiber Sensor in Civil Structural Monitoring

机译:光纤传感器在民间结构监测中的应用

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摘要

From many points of view, fiber optic sensors are the ideal transducers for civil structural monitoring. Being durable, stable and insensitive to external perturbations, they are particularly interesting for the long-term health assessment of civil structures. On the other hand, the small size and the relative fragility of the naked fibers are apparently incompatible with the hostile environment usually found in civil engineering. In this contribution we will however show that with adequate packaging and careful design of the sensors and their accessories, fiber optic sensors can match and surpass conventional sensors, not only in their measurement performance, but also in the ease of use and survivability. This paper resumes the nine year long experience of our group in the installation of fiber optic sensors in the most diverse structure types, including bridges, tunnels, dams, piles, anchors, historical monuments, nuclear power plants and many others. To date, we have installed about 1'500 sensors in almost 70 different applications. Statistics show that, by proper handling, it is possible to achieve 95-100% survivability during installation and for many years after ward.
机译:从许多角度来看,光纤传感器是用于民用结构监测的理想传感器。对外部扰动持久,稳定,不敏感,它们对民间结构的长期健康评估特别有趣。另一方面,裸纤维的小尺寸和相对脆性显然与通常在土木工程中发现的敌对环境不相容。然而,在这一贡献中,我们将显示,通过足够的包装和仔细设计传感器及其附件,光纤传感器可以匹配和超越常规传感器,不仅在其测量性能方面,而且在易用性和生存能力方面也可以匹配和超越传统传感器。本文恢复了我们集团在安装最多多​​样化的结构类型的光纤传感器中的九年经验,包括桥梁,隧道,水坝,桩,锚,历史纪念碑,核电厂等。迄今为止,我们在近70个不同的应用程序中安装了大约1'500的传感器。统计数据显示,通过适当的处理,在安装期间可以实现95-100%的生存能力和病房后多年。

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