Numerical analysis of passive pile groups in offshore soft deposits

Sangseom Jeong, Donghee Seo, Youngho Kim

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The performance of pile foundations in offshore soft deposits is frequently dominated by passive loading from approach embankments for reclaimed land in Korea. This is mainly because of a Korean offshore soil profile, involving an over 30 m normally consolidated soil, with a strength that varies linearly with depth. This paper presents the results of an investigation on short- and long-term passive loading on the piles using two dimensional elastoplastic-consolidation coupled FEM analyses with large strain mode. This numerical scheme is essentially based on an updated Lagrangian formulation, which is favorably validated in cases of both centrifuge tests and field measurements. Although a parametric study is limited by some of the application, it is shown that passive pile loading is primarily affected by soil profile, pile head boundary condition, magnitude of embankment load, and average degree of consolidation. Simultaneously, time-dependent effect of shear transfer at the pile head is explicitly identified and a useful starting point in design is recommended for passive pile loading in construction (short-term) and consolidation (long-term) phases.

Original languageEnglish
Pages (from-to)1164-1175
Number of pages12
JournalComputers and Geotechnics
Volume36
Issue number7
DOIs
Publication statusPublished - 2009 Sep 1

Fingerprint

pile group
Piles
Numerical analysis
pile
Deposits
Consolidation
Embankments
consolidation
Soils
embankment
soil profile
Pile foundations
Centrifuges
reclaimed land
centrifuge
analysis
Boundary conditions
boundary condition
Finite element method
soil

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Computer Science Applications

Cite this

Jeong, Sangseom ; Seo, Donghee ; Kim, Youngho. / Numerical analysis of passive pile groups in offshore soft deposits. In: Computers and Geotechnics. 2009 ; Vol. 36, No. 7. pp. 1164-1175.
@article{bfdf034714e842c8b69a314e10a43f5c,
title = "Numerical analysis of passive pile groups in offshore soft deposits",
abstract = "The performance of pile foundations in offshore soft deposits is frequently dominated by passive loading from approach embankments for reclaimed land in Korea. This is mainly because of a Korean offshore soil profile, involving an over 30 m normally consolidated soil, with a strength that varies linearly with depth. This paper presents the results of an investigation on short- and long-term passive loading on the piles using two dimensional elastoplastic-consolidation coupled FEM analyses with large strain mode. This numerical scheme is essentially based on an updated Lagrangian formulation, which is favorably validated in cases of both centrifuge tests and field measurements. Although a parametric study is limited by some of the application, it is shown that passive pile loading is primarily affected by soil profile, pile head boundary condition, magnitude of embankment load, and average degree of consolidation. Simultaneously, time-dependent effect of shear transfer at the pile head is explicitly identified and a useful starting point in design is recommended for passive pile loading in construction (short-term) and consolidation (long-term) phases.",
author = "Sangseom Jeong and Donghee Seo and Youngho Kim",
year = "2009",
month = "9",
day = "1",
doi = "10.1016/j.compgeo.2009.05.003",
language = "English",
volume = "36",
pages = "1164--1175",
journal = "Computers and Geotechnics",
issn = "0266-352X",
publisher = "Elsevier BV",
number = "7",

}

Numerical analysis of passive pile groups in offshore soft deposits. / Jeong, Sangseom; Seo, Donghee; Kim, Youngho.

In: Computers and Geotechnics, Vol. 36, No. 7, 01.09.2009, p. 1164-1175.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Numerical analysis of passive pile groups in offshore soft deposits

AU - Jeong, Sangseom

AU - Seo, Donghee

AU - Kim, Youngho

PY - 2009/9/1

Y1 - 2009/9/1

N2 - The performance of pile foundations in offshore soft deposits is frequently dominated by passive loading from approach embankments for reclaimed land in Korea. This is mainly because of a Korean offshore soil profile, involving an over 30 m normally consolidated soil, with a strength that varies linearly with depth. This paper presents the results of an investigation on short- and long-term passive loading on the piles using two dimensional elastoplastic-consolidation coupled FEM analyses with large strain mode. This numerical scheme is essentially based on an updated Lagrangian formulation, which is favorably validated in cases of both centrifuge tests and field measurements. Although a parametric study is limited by some of the application, it is shown that passive pile loading is primarily affected by soil profile, pile head boundary condition, magnitude of embankment load, and average degree of consolidation. Simultaneously, time-dependent effect of shear transfer at the pile head is explicitly identified and a useful starting point in design is recommended for passive pile loading in construction (short-term) and consolidation (long-term) phases.

AB - The performance of pile foundations in offshore soft deposits is frequently dominated by passive loading from approach embankments for reclaimed land in Korea. This is mainly because of a Korean offshore soil profile, involving an over 30 m normally consolidated soil, with a strength that varies linearly with depth. This paper presents the results of an investigation on short- and long-term passive loading on the piles using two dimensional elastoplastic-consolidation coupled FEM analyses with large strain mode. This numerical scheme is essentially based on an updated Lagrangian formulation, which is favorably validated in cases of both centrifuge tests and field measurements. Although a parametric study is limited by some of the application, it is shown that passive pile loading is primarily affected by soil profile, pile head boundary condition, magnitude of embankment load, and average degree of consolidation. Simultaneously, time-dependent effect of shear transfer at the pile head is explicitly identified and a useful starting point in design is recommended for passive pile loading in construction (short-term) and consolidation (long-term) phases.

UR - http://www.scopus.com/inward/record.url?scp=67650999507&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=67650999507&partnerID=8YFLogxK

U2 - 10.1016/j.compgeo.2009.05.003

DO - 10.1016/j.compgeo.2009.05.003

M3 - Article

AN - SCOPUS:67650999507

VL - 36

SP - 1164

EP - 1175

JO - Computers and Geotechnics

JF - Computers and Geotechnics

SN - 0266-352X

IS - 7

ER -