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

Marco Previtali; Matteo O. Ciantia; Thomas Riccio

doi:10.53243/NUMGE2023-322

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

Marco Previtali, Matteo O. Ciantia, Thomas Riccio

Civil Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

94 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 language	English
Title of host publication	Proceedings of the 10th European Conference on Numerical Methods in Geotechnical Engineering
Editors	Lidija Zdravkovic, Stavroula Kontoe, Aikaterini Tsiampousi, David Taborda
Place of Publication	London
Publisher	International Society for Soil Mechanics and Geotechnical Engineering
Number of pages	6
DOIs	https://doi.org/10.53243/NUMGE2023-322
Publication status	Published - 26 Jun 2023
Event	10th European Conference on Numerical Methods in Geotechnical Engineering - Imperial College London, London, United Kingdom Duration: 26 Jun 2023 → 28 Jun 2023

Conference

Conference	10th European Conference on Numerical Methods in Geotechnical Engineering
Country/Territory	United Kingdom
City	London
Period	26/06/23 → 28/06/23

Keywords

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

Access to Document

10.53243/NUMGE2023-322

Final Published VersionFinal published version, 429 KB

1 Active

Installation Effects On Cyclic Axial And Lateral Performance Of Displacement Piles In Chalk
Ciantia, M. (Investigator)
Engineering and Physical Sciences Research Council
11/02/22 → 10/02/25
Project: Research

4 Conference contribution
1 Article

Large deformation numerical assessment of rock anchor response under axial loading for offshore renewable energy applications
Genco, A., Ciantia, M. O. (Lead / Corresponding author), Previtali, M., Brown, M., Ivanović, A., Cresswell, N. & Twomey, V., Sept 2024, In: Computers and Geotechnics. 173, 13 p., 106563.
Research output: Contribution to journal › Article › peer-review

Open Access
File
1 Citation (Scopus)

55 Downloads (Pure)
A time-to-fracture DEM model for simulating creep in rough crushable sand
Lei, J., Arroyo, M., Ciantia, M. & Zhang, N., 26 Jun 2023, Proceedings of the 10th European Conference on Numerical Methods in Geotechnical Engineering. Zdravkovic, L., Kontoe, S., Tsiampousi, A. & Taborda, D. (eds.). London: International Society for Soil Mechanics and Geotechnical Engineering, 6 p. 37
Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Open Access
File
72 Downloads (Pure)
DEM analysis of helix number effects on offshore screw pile installation and in-service performance
Wang, W., Brown, M. J., Ciantia, M. O., Sharif, Y. U. & Cerfontaine, B., 26 Jun 2023, Proceedings of the 10th European Conference on Numerical Methods in Geotechnical Engineering. Zdravkovic, L., Kontoe, S., Tsiampousi, A. & Taborda, D. (eds.). London: International Society for Soil Mechanics and Geotechnical Engineering, 6 p. 217
Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Open Access
File
139 Downloads (Pure)

Cite this

Previtali, M., Ciantia, M. O., & Riccio, T. (2023). Numerical installation of OE piles in soft rocks within the GPFEM framework. In L. Zdravkovic, S. Kontoe, A. Tsiampousi, & D. Taborda (Eds.), Proceedings of the 10th European Conference on Numerical Methods in Geotechnical Engineering Article 322 International Society for Soil Mechanics and Geotechnical Engineering. https://doi.org/10.53243/NUMGE2023-322

Previtali, Marco ; Ciantia, Matteo O. ; Riccio, Thomas. / Numerical installation of OE piles in soft rocks within the GPFEM framework. Proceedings of the 10th European Conference on Numerical Methods in Geotechnical Engineering. editor / Lidija Zdravkovic ; Stavroula Kontoe ; Aikaterini Tsiampousi ; David Taborda. London : International Society for Soil Mechanics and Geotechnical Engineering, 2023.

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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. ",

keywords = "Chalk, Large deformations, Insertion problems in Continuum Mechanics, Coupled H-M",

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note = "Funding Information: This work is an output from the ICE-PICK project, funded by the New Investigator Award EPSRC grant EP/W00013X/1. Copyright: {\textcopyright} Authors: All rights reserved, 2023.; 10th European Conference on Numerical Methods in Geotechnical Engineering ; Conference date: 26-06-2023 Through 28-06-2023",

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Previtali, M , Ciantia, MO & Riccio, T 2023, Numerical installation of OE piles in soft rocks within the GPFEM framework. in L Zdravkovic, S Kontoe, A Tsiampousi & D Taborda (eds), Proceedings of the 10th European Conference on Numerical Methods in Geotechnical Engineering., 322, International Society for Soil Mechanics and Geotechnical Engineering, London, 10th European Conference on Numerical Methods in Geotechnical Engineering, London, United Kingdom, 26/06/23. https://doi.org/10.53243/NUMGE2023-322

Numerical installation of OE piles in soft rocks within the GPFEM framework. / Previtali, Marco ; Ciantia, Matteo O.; Riccio, Thomas.
Proceedings of the 10th European Conference on Numerical Methods in Geotechnical Engineering. ed. / Lidija Zdravkovic; Stavroula Kontoe; Aikaterini Tsiampousi; David Taborda. London: International Society for Soil Mechanics and Geotechnical Engineering, 2023. 322.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Numerical installation of OE piles in soft rocks within the GPFEM framework

AU - Previtali, Marco

AU - Ciantia, Matteo O.

AU - Riccio, Thomas

PY - 2023/6/26

Y1 - 2023/6/26

N2 - 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.

AB - 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.

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KW - Large deformations

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A2 - Zdravkovic, Lidija

A2 - Kontoe, Stavroula

A2 - Tsiampousi, Aikaterini

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ER -

Previtali M , Ciantia MO , Riccio T. Numerical installation of OE piles in soft rocks within the GPFEM framework. In Zdravkovic L, Kontoe S, Tsiampousi A, Taborda D, editors, Proceedings of the 10th European Conference on Numerical Methods in Geotechnical Engineering. London: International Society for Soil Mechanics and Geotechnical Engineering. 2023. 322 doi: 10.53243/NUMGE2023-322

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

Abstract

Conference

Keywords

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Projects

Installation Effects On Cyclic Axial And Lateral Performance Of Displacement Piles In Chalk

Research output

Large deformation numerical assessment of rock anchor response under axial loading for offshore renewable energy applications

A time-to-fracture DEM model for simulating creep in rough crushable sand

DEM analysis of helix number effects on offshore screw pile installation and in-service performance

Cite this