Setup and calibration of piles with FBG strain sensors in a geotechnical centrifuge
Setup and calibration of piles with FBG strain sensors in a geotechnical centrifuge
This paper discusses technical aspects of the experimental setup and calibration processing during centrifuge testing of single piles, instrumented with fibre Bragg grating (FBG) strain sensors, under vertical loads. Results illustrate the influence of the pile head connection method and data processing/correction of FBG readings. First, experimental data demonstrate issues encountered when adopting a rigid connection between a loading device, and how these can be tackled by adopting a point-to-surface contact. Second, the paper presents a method to minimise, in FBG strain sensor data, issues relating to pile bending during routine compression calibration and centrifuge testing.
Chuanjin Tang; A. M. Marshall; Charles Michael Heron; A. Franza; J. Xu
18th European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE2024)
D - Current and new construction methods
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