Wave emissions from pile installation via axial and torsional vibrations in a layered acousto-elastic medium

Abstract (2024)

Authors

Athanasios Tsetas Dynamics of Structures
Apostolos Tsouvalas Offshore Engineering, Dynamics of Structures
Andrei Metrikine Hydraulic Engineering, Dynamics of Structures
Research Group
Dynamics of Structures
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Published Date

2024

Language

English

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Research Group

Dynamics of Structures

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.

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