Equilibrium scour depth at offshore monopile foundation in combined waves and current
نویسندگان
چکیده
منابع مشابه
An Investigation into the Effect of Scour on the Loading and Deformation Responses of Monopile Foundations
Severe foundation scour may occur around monopile foundations of offshore wind turbines due to currents and waves. The so-called p-y curves method is suggested in the existing design recommendations to determine the behavior of monopiles unprotected against scour and the reduction of effective soil stress is accounted for by the extreme scour depth. This conservative design approach does not co...
متن کاملNumerical and Experimental Modeling of Scour at Foundation Structures for Offshore Wind Turbines
There is presently a lack of knowledge of scour progression for complex offshore foundation structures, such as Tripod foundations for offshore wind turbines. Typically, scour is investigated in physical model tests. As an extension, parts of the investigations could be carried out by using numerical methods; however, such numerical methods require that all relevant processes leading to scour a...
متن کاملThe nature of scour development and scour protection at offshore windfarm foundations.
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...
متن کاملThe Turbulent Wake of a Monopile Foundation
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. Tests were undertaken using several combinations of ...
متن کاملReliability analysis of monopile offshore wind turbine support structures
We probe the reliability of monopile support structures designed to support industrial scale turbines along the coastal United States using stochastic models for the wind and wave loadings, and representations of the uncertainty associated with soil properties. The turbine support structure investigated is that promulgated by the National Renewable Energy Laboratory as typical of a monopile sup...
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ژورنال
عنوان ژورنال: Science China Technological Sciences
سال: 2014
ISSN: 1674-7321,1869-1900
DOI: 10.1007/s11431-014-5538-9