The SOURCE project: quantifying and reducing the uncertainties associated with in situ stiffness measurements

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Publication Title
The SOURCE project: quantifying and reducing the uncertainties associated with in situ stiffness measurements

Abstract
Offshore wind turbine foundations account for a significant portion of a wind farm's capital cost, and design optimisation is becoming increasingly important. While the soil or rock in situ shear stiffness is a vital input parameter in several foundation design methods, the reliability of current in situ stiffness measurements and interpretation techniques is known to be variable. The SOURCE (Improved In situ Stiffness Measurement for Offshore Wind Foundation Design Considering Uncertainty Repeatability and Common Sources of Error) project is underway to quantify and reduce uncertainty in soil/rock in situ stiffness measurements and improve the predictive capability of offshore foundation design methods. The project involves multi-method geophysical and in situ field testing at three onshore sites, each having distinct ground conditions representative of offshore sites. The in situ testing is supported by advanced laboratory testing on high- quality samples. This paper reviews typical challenges and presents preliminary insights from the carefully controlled experiments, which aim to identify inter and intra-method variability in estimating the small strain in situ stiffness.
Authors
N. S. Shinde; Roisin Buckley; Luke Rieman

Published In

18th European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE2024)

Theme

E - Environment, water and energy

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