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Erschienen in:
Evaluating Fatigue Resistance of FRP-Strengthened RC Bridge Decks Subjected to Repeated Wheel Load Kapitel lesen Erstes Kapitel lesen

2018 | OriginalPaper | Buchkapitel

Application of Distributed Optical Fiber Sensors for Monitoring Pavement Settlement

verfasst von : Yifan Zhang, Chengyu Hong, Yawen Zhang, Rafique Ahmed

Erschienen in: Environmental Vibrations and Transportation Geodynamics

Verlag: Springer Singapore

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Abstract

This paper presents a novel beam (namely large-settlement beam) applied for monitoring large settlement underground based on fiber Bragg grating (FBG) and Brillouin optical time domain analysis (BOTDA), which were primarily mounted on the beam surface for strain measurement. Calibration test was performed to validate the performance of the beam for monitoring large deflection (settlement) under a load/unload cycle. Strain data collected from FBG and BOTDA sensors agree fairly well under this load/unload cycle and the corresponding deflection calculated using finite difference method are in good agreement with measured data from Linear Variable Differential Transformers (LVDTs). The relative errors occurred during loading and unloading processes were also found to be maintained within a limited range. The errors occurred during unload process were slightly higher than that in loading process, this phenomenon is possibly attributed to the unrecoverable plastic deformation when large deflection occurs. The maximum deflection achieved in present test was around 110 mm so that the large-settlement is expect to be embedded as a settlement sensor under pavements, foundations, and dams for monitoring possible excessive settlement.

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Vorheriges Kapitel Lateral Ground Displacement Induced by EPB Tunneling in Ningbo Soft Clay
Nächstes Kapitel Numerical Model of Widen Construct of Geogrid-Reinforced Pile-Supported Railway Embankment
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Metadaten
Titel
Application of Distributed Optical Fiber Sensors for Monitoring Pavement Settlement
verfasst von
Yifan Zhang
Chengyu Hong
Yawen Zhang
Rafique Ahmed
Copyright-Jahr
2018
Verlag
Springer Singapore
Buch
Environmental Vibrations and Transportation Geodynamics

Print ISBN: 978-981-10-4507-3

Electronic ISBN: 978-981-10-4508-0

Copyright-Jahr: 2018

DOI
https://doi.org/10.1007/978-981-10-4508-0_64