Numerical installation of OE piles in soft rocks within the GPFEM framework

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

63 Downloads (Pure)

Abstract

Pile installation in soft rocks, i.e. chalk, still poses significant design and construction challenges. Episodes of pile run and refusal, both detrimental for the offshore industry continue to occur. This is in part due to the mechanical behaviour of soft-rocks, that in dynamic hydro-mechanical (HM) coupled conditions, become very complicated because of the localised collapse/de-structuration of the initially intact rock. Herein, a constitutive model for soft rocks, calibrated on laboratory data, is implemented within the GPFEM framework and is used to simulate open-ended pile installation in an idealized, homogeneous chalk layer. To prevent mesh dependency during strain localization, a non-local integral regularization is adopted. The results appear to capture the trends observed in the field, such as pile capacity and radial stress profile, showcasing the ability of the GPFEM framework as an useful tool to aid the interpretation of field results and predicting pile capacity.
Original languageEnglish
Title of host publicationProceedings of the 10th European Conference on Numerical Methods in Geotechnical Engineering
EditorsLidija Zdravkovic, Stavroula Kontoe, Aikaterini Tsiampousi, David Taborda
Place of PublicationLondon
PublisherInternational Society for Soil Mechanics and Geotechnical Engineering
Number of pages6
DOIs
Publication statusPublished - 26 Jun 2023
Event10th European Conference on Numerical Methods in Geotechnical Engineering - Imperial College London, London, United Kingdom
Duration: 26 Jun 202328 Jun 2023

Conference

Conference10th European Conference on Numerical Methods in Geotechnical Engineering
Country/TerritoryUnited Kingdom
CityLondon
Period26/06/2328/06/23

Keywords

  • Chalk
  • Large deformations
  • Insertion problems in Continuum Mechanics
  • Coupled H-M

Fingerprint

Dive into the research topics of 'Numerical installation of OE piles in soft rocks within the GPFEM framework'. Together they form a unique fingerprint.

Cite this