eprintid: 10189340
rev_number: 13
eprint_status: archive
userid: 699
dir: disk0/10/18/93/40
datestamp: 2024-03-20 12:08:41
lastmod: 2024-08-12 15:55:59
status_changed: 2024-03-20 12:08:41
type: article
metadata_visibility: show
sword_depositor: 699
creators_name: Spyridis, Michail
creators_name: Lopez-Querol, Susana
title: Installation of open-ended piles: A numerical investigation into the effects on the state of silica sand
ispublished: pub
divisions: UCL
divisions: B04
divisions: C05
divisions: F44
keywords: Pile installation; Sands; Offshore engineering; Numerical methods; CEL; Hypoplasticity
note: Copyright © 2024 Production and hosting by Elsevier B.V. on behalf of The Japanese Geotechnical Society.
This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
abstract: Up to this day, there are great uncertainties in the design procedures of monopiles, especially
concerning the soil state condition and penetration response during their installation. A
numerical model, based on the Coupled Eulerian method and using the hypoplastic law with
intergranular strain, is proposed and validated in this paper, after which a series of open-ended
pile installation tests have been carried out numerically, to investigate the influence of the
jacked installation on the initial conditions for three types of silica sand. A range of soil densities
and pile diameters is considered in this analysis. A full investigation of the installation forces,
stress level, changes in volume-stress level and voids ratio is conducted. The numerical
solution provided a correlation between the penetration resistance and the granulometric
properties of the studied sands. Subsequently, the radial stresses in the surrounding soil mass
are correlated with the type of sand and its relative density. The stress-volume state of a set of
points in the soil domain during installation is presented and discussed from the critical state
framework, revealing the contribution of the in-situ state in the pile installation. Finally, the
lateral earth pressure resulting after installation is presented.
date: 2024-06
date_type: published
publisher: Elsevier
official_url: https://doi.org/10.1016/j.sandf.2024.101458
oa_status: green
full_text_type: pub
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 2260638
doi: 10.1016/j.sandf.2024.101458
lyricists_name: Lopez-Querol, Maria Susana
lyricists_id: SLOPE50
actors_name: Lopez-Querol, Maria Susana
actors_id: SLOPE50
actors_role: owner
funding_acknowledgements: EP/R513143/1 [EPSRC]
full_text_status: restricted
publication: Soils and Foundations
volume: 64
number: 3
article_number: 101458
issn: 0038-0806
citation:        Spyridis, Michail;    Lopez-Querol, Susana;      (2024)    Installation of open-ended piles: A numerical investigation into the effects on the state of silica sand.                   Soils and Foundations , 64  (3)    , Article 101458.  10.1016/j.sandf.2024.101458 <https://doi.org/10.1016/j.sandf.2024.101458>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10189340/1/Lopez-Querol_1-s2.0-S0038080624000362-main.pdf