The Dynamic Stiffness of Surface Footings for Offshore Wind Turbines : reliability based assessment
Publikation: Forskning - peer review › Konferenceartikel i proceeding
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The Dynamic Stiffness of Surface Footings for Offshore Wind Turbines : reliability based assessment. / Vahdatirad, Mohammadjavad; Andersen, Lars; Clausen, Johan; Sørensen, John Dalsgaard.
Proceedings of the Thirteenth International Conference on Civil, Structural and Environmental Engineering Computating. red. / B. H. V. Topping; Y. Tsompanakis. Stirlingshire, Scotland : Civil-Comp Press, 2011. (Civil-Comp Proceedings; Nr. 96).Publikation: Forskning - peer review › Konferenceartikel i proceeding
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RIS
TY - GEN
T1 - The Dynamic Stiffness of Surface Footings for Offshore Wind Turbines
T2 - Proceedings of the Thirteenth International Conference on Civil, Structural and Environmental Engineering Computating
A1 - Vahdatirad,Mohammadjavad
A1 - Andersen,Lars
A1 - Clausen,Johan
A1 - Sørensen,John Dalsgaard
AU - Vahdatirad,Mohammadjavad
AU - Andersen,Lars
AU - Clausen,Johan
AU - Sørensen,John Dalsgaard
PB - Civil-Comp Press
CY - Stirlingshire, Scotland
PY - 2011
Y1 - 2011
N2 - This study concerns the dynamic stiffness of foundations for large offshore wind turbines. Especially, the purpose of the analysis is to quantify the uncertainties related to the first natural frequency of a turbine supported by a surface footing on layered soil. The dynamic properties of the turbine structure are subject to relatively small uncertainties compared to the properties of the subsoil. Thus, the seabed is not a homogeneous half-space but contains layers of sand, clay, silt, etc. with depths that vary from one position to another. The depth of the top layer may even change over time due to sediment transportation. Further, the stiffness and density of the materials within a single layer is subject to uncertainties. This leads to uncertainties of the dynamic stiffness of the foundation and therefore the natural frequencies. The aim of the study is to quantify the level of uncertainties and discuss the utilization of reliability-based design of surface footings for wind turbines.
AB - This study concerns the dynamic stiffness of foundations for large offshore wind turbines. Especially, the purpose of the analysis is to quantify the uncertainties related to the first natural frequency of a turbine supported by a surface footing on layered soil. The dynamic properties of the turbine structure are subject to relatively small uncertainties compared to the properties of the subsoil. Thus, the seabed is not a homogeneous half-space but contains layers of sand, clay, silt, etc. with depths that vary from one position to another. The depth of the top layer may even change over time due to sediment transportation. Further, the stiffness and density of the materials within a single layer is subject to uncertainties. This leads to uncertainties of the dynamic stiffness of the foundation and therefore the natural frequencies. The aim of the study is to quantify the level of uncertainties and discuss the utilization of reliability-based design of surface footings for wind turbines.
KW - Wind Turbines
KW - Foundations
KW - Layered Soil
KW - Stochastic Analysis
KW - Dynamics
KW - Monte Carlo
KW - Wind Turbines
KW - Foundations
KW - Layered Soil
KW - Stochastic Analysis
KW - Dynamics
KW - Monte Carlo
BT - Proceedings of the Thirteenth International Conference on Civil, Structural and Environmental Engineering Computating
A2 - Tsompanakis,Y.
ED - Tsompanakis,Y.
T3 - Civil-Comp Proceedings
T3 - en_GB
ER -