Wave emissions from pile installation via axial and torsional vibrations in a layered acousto-elastic medium
A. Tsetas (TU Delft - Dynamics of Structures)
A. Tsouvalas (TU Delft - Offshore Engineering, TU Delft - Dynamics of Structures)
Andrei V. Metrikin (TU Delft - Hydraulic Engineering, TU Delft - Dynamics of Structures)
More Info
expand_more
Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.
Abstract
This paper studies the underwater sound and seabed vibrations generated from pile installation via axial and/or torsional vibrations, namely the "Gentle Driving of Piles" (GDP) method. A non-linear pile-soil-water model is utilized in this numerical study, where the pile vibrations and the resulting fluid-soil wave motion are analyzed. A semi-analytical finite element approach is used for pile-soil-water modelling and the pile-soil interaction is based on Coulomb friction enhanced with a memory mechanism. The comparison between classical axial vibratory driving and GDP is considered, investigating the effect of torsion in noise abatement as well as the presence of super-harmonic resonance-like phenomena.