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EFFECTS OF LOADING ON STIFFNESS AND CAPACITY OF WIND TURBINE HYBRID FOUNDATION UNDER 1 G MODELING.
Session: Foundations V / Fondations V
Ahmed Abdelkader, phd candidate (Canada)
hesham el naggar, Professor, Vice dean Faculty of engineering, UWO (Canada)
Wind Energy generation from both onshore and offshore wind farms is growing rapidly. Monopile foundations offer construction advantages, and therefore are widely used, especially in North Sea offshore wind energy projects, as an effective foundation option for wind turbines. To further enhance the efficiency of monopole foundations for wind turbines applications, a new hybrid system that combines a monopile and a concrete plate is presented and tested in this work. Measured wind loads from boundary layer wind tunnel tests conducted at Western University on a model 5 MW NREL (National Renewable Energy Laboratory) wind turbine were used. A scaled-down non-dimensional framework of stiff foundation models installed in sand was used to conduct a series of static tests under 1-g. Two model foundations were tested in a laboratory setup. The test results were used to develop an equation to predict the plate effects of the proposed hybrid foundation system as an effective modeling technique in the lab.
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