Strain sensing during load tests of large-diameter piles Museum of Modern Art

The project is one of the most prestigious investments built in the heart of Poland’s capital. Museum of Modern Art is a structure with unique design, built close to existing infrastructure. Foundations include deep large-diameter piles equipped with EpsilonRebars for safety reasons. Measurements were done during load tests and allowed for detailed analysis of piles structural performance and force transfer to the surrounding ground.

DFOS Sensors Installed: EpsilonRebar

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

Analysis of force transfer from large-diameter piles to the surrounding ground
Detection of local cracks and fractures along the entire depth of more than 30m
Control and validation of load tests in reference to theoretical predictions
Reliable data for “observation method” proposed in geotechnical standards

Results of using the DFOS monitoring system

EpsilonRebars were embedded in large-diameter piles over their entire depth up to 35 m. Strain measurements made during load tests allowed for detailed analysis of force distribution from the pile to the surrounding ground, as well as early-age concrete cracks being closed due to the compression. An example plot of this unique data is presented.

Technical specifications

16 900 measurement points
169 m of sensing path
5 x EpsilonRebar
short-term (load tests)

Example results

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John Doe

Project partner

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