Revised soil damping using realistic pile-soil interaction models

Research output: Chapter in Book/Report/Conference proceedingConference paper

Abstract

The contribution of soil damping to the overall damping of offshore wind turbine structures has proven to be elusive. The strain-dependent soil stiff-ness and material damping can be quantified from small-scale element tests but applying the results from these tests in an integrated structural model requires a realistic assessment of the shear strains in the subsoil (Kagawa and Kraft, 1980). Recent developments in pile-soil interaction modelling for large-diameter monopiles (Byrne et al, 2017) have led to more accurate models of pile response under operational loads. Moreover, field measure-ments of offshore wind turbine foundations before installation of the su-perstructure are available which allow improved identification of the effect of soil damping. Applying the conventional pile-soil interaction modelling did not provide a satisfactory explanation for the differences in soil damp-ing.

This paper applies improved pile-soil interaction modelling with site-specific soil parameters to three different offshore monopile foundations for a Belgian offshore wind project to identify whether the improved mod-els can explain the differences in measured soil damping. The results show the influence of the pile-soil interaction modelling on the derived soil damping.
Original languageEnglish
Title of host publicationProceedings of the 2nd Vietnam Symposium on Advances in Offshore Engineering. VSOE2021 2021
EditorsDat Vu Huynh, Anh Minh Tang, Dinh Hong Doan, Phil Watson
PublisherSpringer, Singapore
Pages441-448
Number of pages7
ISBN (Electronic)978-981-16-7735-9
ISBN (Print)978-981-16-7734-2
DOIs
Publication statusPublished - 2021
Event2nd Vietnam Symposium on Advances in Offshore Engineering - Ho Chi Minh City, Ho Chi Minh City, Viet Nam
Duration: 1 Nov 20223 Nov 2022

Publication series

NameLecture Notes in Civil Engineering
PublisherSpringer
Volume208
ISSN (Print)2366-2557
ISSN (Electronic)2366-2565

Conference

Conference2nd Vietnam Symposium on Advances in Offshore Engineering
CountryViet Nam
City Ho Chi Minh City
Period1/11/223/11/22

Keywords

  • monopile
  • damping
  • geotechnics

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