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  • Experimental analysis of the response of open-ended pipe piles to static and cyclic axial loading using digital image correlation

This content will become publicly available on June 9, 2026

Title: Experimental analysis of the response of open-ended pipe piles to static and cyclic axial loading using digital image correlation
Offshore foundation elements are often subjected to cycles of compressive and tensile loading. Open-ended pipe piles are frequently used as foundations for wind turbines as monopiles or as part of jacket structures. This paper reports the results of two open-ended pipe pile tests in a half-cylindrical calibration chamber with image analysis capabilities. The model piles, with diameters of 44 mm and 63 mm, were jacked into dense silica sand samples, statically load tested in compression, cyclically load tested (under displacement-controlled conditions), and statically load tested in compression a second time. The cyclic load tests had 100 cycles with a half-amplitude of 1 mm. Digital images captured during testing were analysed using digital image correlation to obtain the displacement fields in the soil domain. Image analyses of compressive static load tests indicate that the soil plug undergoes vertical compression during static loading. Cyclic loading leads to shaft resistance degradation, which is correlated with contractive radial strains around the model pile. Cycling also causes vertical compression below the pile base and inside the soil plug, which increases the base resistance of the piles and ultimately increases the total compressive capacity of the model open-ended piles under static loading.  more » « less
Award ID(s):
2028672
PAR ID:
10600828
Author(s) / Creator(s):
; ;
Publisher / Repository:
Proceedings of ISFOG 2025
Date Published:
ISBN:
978-2-85782-758-0
Subject(s) / Keyword(s):
Open-ended pipe piles axial loading cyclic loading digital image correlation
Format(s):
Medium: X
Location:
https://doi.org/10.53243/ISFOG2025-206
Sponsoring Org:
National Science Foundation
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