Distributed Fibre Optic Sensing (DFOS) in 3D small-scale tests on steel-reinforced piled embankments

1. Home
2. Publications
3. Online Library
4. Distributed Fibre Optic Sensing (DFOS) in 3D small-scale tests on steel-reinforced piled embankments

This paper explores the application of Distributed Fibre Optic Sensing (DFOS) technology in a series of small-scale tests on steel-reinforced piled embankments. The tests were conducted as part of a study on the impact of welded steel mesh reinforcement on soil arching, settlement patterns, and strain distribution.

DFOS technology played a key role, providing a detailed 3D perspective on the strains and deformations of the reinforcement and soil at various levels in the fill. While DFOS measurements have high precision, occasional local spikes (deviations or strain reading anomalies (SRAs)) were observed, necessitating careful interpretation.

The interpretation procedures employed may affect the results. The paper discusses these procedures, addressing challenges such as handling spikes and determining 3D deformations from strain measurements. Recommendations for future DFOS applications in similar contexts are provided.  Besides the extensive benefits provided by the innovative DFOS technology for geotechnical experimental research, this paper thoroughly discusses the challenges and limitations in data interpretation.

Insights gained from small-scale tests at Deltares were used to detail the large-scale test set-up of a piled embankment at Technical University of Darmstadt, Germany.

5th European Conference on Physical Modelling in Geotechnics (ECPMG2024)

Geotechnical infrastructure