Evaluating the reliability of existing methods for predicting installation torque of screw piles in saturated sand: a comparative study
Evaluating the reliability of existing methods for predicting installation torque of screw piles in saturated sand: a comparative study
Screw piles have been the subject of extensive research, with various methodologies proposed to predict installation torque from earth pressure theory-based and Cone Penetration Test (CPT)-based perspectives. Accurate prediction of installation torque is crucial for determining the required equipment, assessing the suitability of screw piles as a foundation solution, and ensuring that the pile material does not yield under the installation torque necessary for a specific installation depth. This study aims to modify existing methods and adapt them to the unique geometry of the screw piles investigated at Aalborg University. The methodologies compared in this study are based on experiments in saturated sand carried out at the laboratories at Aalborg University. The results indicate that earth pressure theory-based approaches provide more consistent outcomes, while CPT-based methods exhibit greater scatter. Consequently, it is concluded that current methods for predicting installation torque are unreliable, necessitating further research.
D. K. Andreasen; Lars Bo Ibsen; A. K. Koteras
18th European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE2024)
A - New developments on structural design
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