Dynamic and monotonic response of Monopile Foundations for Offshore wind turbines using centrifuge testing

Abstract The seismic response of monopile foundations is a growing area research as the offshore wind industry expands worldwide, including in earthquake prone regions world. This paper presents dynamic centrifuge tests aimed at investigating monopiles both dry and saturated sandy soils. latter case includes soil liquefaction under strong input motions, with measured excess pore pressures indicating liquefaction. natural frequency monopile-soil system experimentally determined by measuring to sine sweep motion. Strong earthquakes are then applied this its harmonics. discusses terms peak accelerations observed tests, well using spectra amplification ratios. bending moments along pile also infer moment profile depth. Finally, two identical pushed-over each establish pre post-earthquake monotonic response, lateral stiffness capacity, which compared for model case.