Load testing of toothed cable anchors -structural check of a new bridge
During constructing three railway bridges in Kraków, engineers decided to apply a new structural solution. Steel cable anchorages were embedded inside the concrete. To improve their bonding properties, they were shaped with teeth. To assess the effectiveness of both the friction and mechanical teeth-influenced connection, EpsilonSensors and DFOS strain sensors were glued on the surfaces of the steel anchorage. Measurements were performed during its tensioning.
DFOS Sensors Installed: EpsilonSensor
Project challenges
Benefits of using the DFOS monitoring system
Results of using the DFOS monitoring system
Based on the results obtained from glued EpsilonSensors while tensioning the cable, it was possible to analyse in detail all local events and disturbances within the steel anchorage. They were caused by the unregular geometry of this element, including teeth, openings or changes in widths. The example results with identification of specific events are presented on the below graphs in relation to post-installation documentation.
Example results
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