Applications of Optical Fiber Sensors in Geotechnical Engineering: Laboratory Studies and Field Implementation at the Acropolis of Athens
Elena Kapogianni, Michael Sakellariou
TL;DR
This paper explores how optical fiber sensors can be used in geotechnical engineering, from lab tests to real-world applications like monitoring the Acropolis of Athens.
Contribution
The study demonstrates the effectiveness of FBG sensors in monitoring geotechnical parameters across various scales and conditions.
Findings
FBG sensors successfully captured strain, temperature, and acceleration under seismic and centrifuge loading.
Real-time monitoring of the Acropolis' structural behavior was achieved over two years despite site constraints.
The sensors proved reliable in both laboratory and field settings, showing potential for future geotechnical projects.
Abstract
The current study investigates the feasibility and performance of Fiber Bragg Grating (FBG) optical sensors in geotechnical engineering applications, aiming to demonstrate their broader applicability across different scales, from controlled laboratory experiments to real-world field implementations. More specifically, the research evaluates the sensors’ ability to monitor key parameters—strain, temperature, and acceleration—under diverse loading conditions, including static, dynamic, seismic, and centrifuge loads. Within this framework, laboratory experiments were conducted using the one-degree-of-freedom shaking table at the National Technical University of Athens to assess sensor performance during seismic loading. These tests provided insights into the behavior of geotechnical physical models under earthquake conditions and the reliability of FBG sensors in capturing dynamic…
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Taxonomy
TopicsAdvanced Fiber Optic Sensors · Geotechnical Engineering and Underground Structures · Seismic Waves and Analysis