Earthquakes may cause liquefaction of seabed soil around the monopile foundations offshore wind turbines (OWTs), posing a great threat to safety OWTs. As an accurate prediction method has not been achieved today, further study is conducted in this paper following experimental investigation pore pressure development rule samples farm. In study, new discrimination was proposed first based on tria...

The established foundation type for most offshore wind turbines is monopile. Due to waves and wind, the monopile of such structures experiences cyclic loading that causes rearrangement soil grains around pile, altering damping ratio stiffness soil-pile system. In this study, impact changing frequency density on horizontal displacement, stiffness, piles under lateral load has been evaluated. A s...

Laboratory measurements were undertaken to investigate wave and current velocities in the vicinity of a wind turbine monopile foundation, in order to inform environmental impact assessments and to quantify flow variability in the region of the power take off cable. Flow measurements were made up to 15.5 pile diameters (D) downstream of the pile. Measurements were also taken around the perimeter...

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 indic...

The offshore wind industry is a rapidly growing sector and will likely play significant role in the future of green energy. Monopile support structures are dominant foundation type turbines. Existing monopile to transition piece technologies have number challenges, new design, called wedge connection, presents promising solution. In present study analytical techniques, supported with finite ele...

With the increasing construction of large-scale wind turbines in seismically active coastal areas, survivability these high-rated-power offshore (OWTs) marine and geological conditions becomes extremely important. Although research on dynamic behaviors OWTs under earthquakes has been conducted with consideration soil-structure interaction, attention paid to impact earthquake-induced seabed liqu...

Analysis and interpretation of monitoring data for the seabed bathymetry local to offshore windfarm foundations has shown how the scour develops in time and highlighted variations between sites with different seabed sediment characteristics, i.e. sands and clays. Results from European offshore windfarms have generated a unique dataset for comparison with previously published data. Where surfici...