Experimental Study of the Effects of Cyclic Loading on Base Resistance Mobilization of Piles Using a Calibration Chamber
Experimental Study of the Effects of Cyclic Loading on Base Resistance Mobilization of Piles Using a Calibration Chamber
Cyclic loading significantly changes soil behaviour, particularly in structures such as piles. In this paper, the results of a series of monotonic compressive and cyclic load tests on a jacked closed-ended model pile are presented. Notable findings of this work include a reduction in ultimate unit base resistance following cyclic loading. Interestingly, large cycling displacement amplitude leads to increased limit unit base resistance. This phenomenon results from sand particle movement, particle crushing, and sand dilatancy. Additionally, Digital Image Correlation (DIC) analysis of pictures taken during the tests revealed that, for cyclic displacement half amplitudes of 0.25 mm or less, normalized cumulative radial and vertical displacements in the soil remain minimal. Beyond this threshold, residual displacements increase with increasing cyclic amplitude. The understanding of load cycling effects is crucial for designing resilient geotechnical structures, such as plugged jacket piles for offshore platform.
Ayda Catalina Galvis Castro; Monica Prezzi; Ruben D Tovar-Valencia; Rodrigo Salgado
5th International Symposium on Frontiers in Offshore Geotechnics (ISFOG2025)
10 - Jacket pin piles design: capacity, long-term cyclic loading, seismic loads
https://doi.org/10.53243/ISFOG2025-630
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