PEBSTER (5×5 m): strains and displacements in piled embankment with a steel mesh

The research was part of the H2020 funded “GEOLAB, Science for enhancing Europe’s Critical Infrastructure”. The second stage of the PEBSTER project was focused on load transfer in piled embankments with a steel mesh reinforcement. The deformation of the geotechnical field (5.0 x 5.0 m) was analysed using EpsilonSensors (both bonded to the steel rebars and embedded in the ground) and 3DSensors. Thousands of sensing points allowed a detailed assessmentof axial strains and 3D displacements.

DFOS Sensors Installed: EpsilonSensor and 3DSensor

Project challenges

How to apply non-invasive diagnostics in demanding historic structures?
How to get precise measurement data to detect local damage and imperfection?
How to measure detailed strain profiles over the entire height of the brick masonry wall?

Benefits of using the DFOS monitoring system

Bidirectional distributed strain and displacement (shape change) measurements
Analysis of internal spatial deformation undetectable by conventional methods
Four sensing layers and thousands of points without reinforcing the ground
Detailed and reliable data for design procedures, FEA validation and optimisation

Results of using the DFOS monitoring system

The ground behavior is influenced by the presence of stiff columns, which restrict vertical displacements.

Technical specifications

37 000 measurement points
370 m of sensing path
10 x ES, 40 x 3D
multiple short-term (lab)

Example results

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John Doe

Project partner

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