Results 11 to 20 of about 276 (178)
Installation of Large-Diameter Monopiles: Introducing Wave Dispersion and Non-Local Soil Reaction
Journal of Marine Science and Engineering, 2021 During the last decade the offshore wind industry grew ceaselessly and engineering challenges continuously arose in that area. Installation of foundation piles, known as monopiles, is one of the most critical phases in the construction of offshore wind ...
Athanasios Tsetas +2 more
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Optimization of monopiles for offshore wind turbines [PDF]
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2015 The offshore wind industry currently relies on subsidy schemes to be competitive with fossil-fuel-based energy sources. For the wind industry to survive, it is vital that costs are significantly reduced for future projects. This can be partly achieved by introducing new technologies and partly through optimization of existing technologies and design ...
Dan, Kallehave +3 more
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Evaluation of sand p–y curves by predicting both monopile lateral response and OWT natural frequency
Studia Geotechnica et Mechanica, 2022 Extending the use of the p–y curves included in the regulation codes API and DNV to design large-diameter monopiles supporting offshore wind turbines (OWTs) was unsuccessful as it resulted in an inaccurate estimation of the monopile behavior.
Amel Douifi +3 more
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Biaxial Loading of Offshore Monopiles: Numerical Modeling [PDF]
International Journal of Geomechanics, 2017 In this study, finite-element (FE) modeling was used to examine the influence of biaxial lateral loading of a monopile foundation. Two different soil models were adopted to investigate the influence of state-dependent and anisotropic behavior of soil on monopile response.
Sheil, Brian B., McCabe, Bryan A.
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A model test study on the parameters affecting the cyclic lateral response of monopile foundations for offshore wind turbines embedded in non-cohesive soils [PDF]
Wind Energy Science, 2022 During their service life, monopiles supporting offshore wind turbines are subjected to a large number of lateral cyclic loads resulting from complex environmental conditions such as wind and waves varying in amplitude, direction, load eccentricity and ...
D. Frick, M. Achmus
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Yantu gongcheng xuebao, 2023 The response characteristics of large-diameter monopiles under static and dynamic loads are obviously different from those of traditional small-diameter piles.
CAO Guangwei 1, 2, DING Xuanming 1, 2, ZHANG Dingxin 1, 2, ZHANG Yuting 3, WANG Chunyan 1, 2
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An approach for 2D modelling of laterally loaded piles
Soils and Foundations, 2023 Despite a considerable progress in the analysis and design of monopiles, many methods are based on complex mathematical structures with doubtful or hard assumptions to verify.
M. Ochmański, D. Mašín, J. Duque
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The turbulent wake of a monopile foundation [PDF]
Renewable Energy, 2016 Abstract An experimental programme is presented, examining the turbulent wake of a monopile foundation in a current. Velocity was recorded across an extensive domain downstream of a model monopile in a 0.5 m deep basin, using an acoustic Doppler velocimeter array. The distribution of turbulent kinetic energy (TKE) is examined across the entire domain.
C. Rogan +3 more
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Active vibration control of a monopile offshore structure [PDF]
Journal of Structural Control, 1999 AbstractIn the Danish part of the North Sea monopile platforms with a cylindrical shaft have been used at the exploitation of marginal fields. In the paper a new principle for active vibration control of such structures is suggested. The principle is based on a control of the boundary layer flow around the cylinder of the platform, so the drag force in
Nielsen, Søren R. K. +2 more
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Scour Reduction by Collars around Offshore Monopiles [PDF]
Scour and Erosion, 2010 Excessive scour is a threat to the stability of monopile foundations, e.g. in offshore windparks. Particularly in shallow waters with strong tidal currents such as the North Sea, protection against excessive scouring is required. Commonly applied scour protection consists of loose rock. Little is known about alternative scour protection measures.
De Sonneville, B. +2 more
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