2014
DOI: 10.1016/j.engstruct.2014.06.006
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Effects of soil–structure interaction on real time dynamic response of offshore wind turbines on monopiles

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Cited by 84 publications
(44 citation statements)
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“…Nevertheless, these assumptions may seem reasonable for many offshore wind turbine locations where the lower part of the monopile is placed in a relatively stiff soil layer that prevents pile deflections during normal turbine operation. In addition, it should be noted that a three-dimensional coupled BE/ FE model [32] of a monopile embedded in a viscoelastic soil layer shows almost a constant impedance component for torsional vibrations in the physical frequency range f 0; 8 Hz ∈ [ ] that equals the static torsional pile stiffness [33]. For that reason, the static torsional pile stiffness enters Eq.…”
Section: Physical Modelling Of Unbounded Soil and Monopilementioning
confidence: 99%
“…Nevertheless, these assumptions may seem reasonable for many offshore wind turbine locations where the lower part of the monopile is placed in a relatively stiff soil layer that prevents pile deflections during normal turbine operation. In addition, it should be noted that a three-dimensional coupled BE/ FE model [32] of a monopile embedded in a viscoelastic soil layer shows almost a constant impedance component for torsional vibrations in the physical frequency range f 0; 8 Hz ∈ [ ] that equals the static torsional pile stiffness [33]. For that reason, the static torsional pile stiffness enters Eq.…”
Section: Physical Modelling Of Unbounded Soil and Monopilementioning
confidence: 99%
“…It must be mentioned that these springs are not only frequency dependent but also change with cycles of loading due to dynamic soil structure interaction. Further details on the dynamic interaction can be found in (Bhattacharya et al 2013b;Bhattacharya et al 2013c;Bhattacharya et al 2013a;Lombardi et al 2013;Zania 2014;Damgaard et al 2014) Randolph (1981), slender piles, both for homogeneous and linear inhomogeneous soils Table 3. Stiffness formulae by different researchers for rigid piles in various soil profiles.…”
Section: Foundation Stiffness Of Monopilesmentioning
confidence: 99%
“…Finally, the current work emphasizes on the importance that the proper simulation of the soil‐pile interaction phenomena has for the estimation of the fatigue lifetime of OWTs; see also the literature. ()…”
Section: Discussionmentioning
confidence: 99%
“…Damgaard et al used semi‐analytical frequency‐domain solutions to evaluate the dynamic impedance functions of the pile‐soil system to calibrate a lumped mass model for integration into an aeroelastic multibody code. They used 3 different models for the monopile foundation, namely, the apparent fixity model, a fixed support model at the seabed level, and a coupled lumped‐parameter model.…”
Section: Introductionmentioning
confidence: 99%