Analysis of Downdrag on Pile Groups by the Finite Element Method

Sangseom Jeong, Sooil Kim, Jean Louis Briaud

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

The downdrag on friction and endbearing pile groups was investigated, based on a numerical analysis. The emphasis was on quantifying the reduction of downdrag on pile groups, with a flexible pile cap, due to group effect. The case of a single pile and, subsequently, the response of groups were analyzed by developing interaction factors obtained from a three-dimensional nonlinear finite element study. Based on a limited parametric study, it is shown that the downdrag on piles in a group is much less than the downdrag on a single pile and is highly influenced by the group spacing, total number of piles, and the relative position of the piles in a group. In light of all these influencing parameters, a simple method is recommended for square groups of 9-25 piles with spacing-to-diameter ratios of 2.5 and 5.0 for downdrag loads.

Original languageEnglish
Pages (from-to)143-161
Number of pages19
JournalComputers and Geotechnics
Volume21
Issue number2
Publication statusPublished - 1997 Dec 1

Fingerprint

pile group
finite element method
Piles
pile
Finite element method
spacing
analysis
friction
Numerical analysis
Friction

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Computer Science Applications

Cite this

Jeong, Sangseom ; Kim, Sooil ; Briaud, Jean Louis. / Analysis of Downdrag on Pile Groups by the Finite Element Method. In: Computers and Geotechnics. 1997 ; Vol. 21, No. 2. pp. 143-161.
@article{b2d128f8fa9a475192941eee35f84677,
title = "Analysis of Downdrag on Pile Groups by the Finite Element Method",
abstract = "The downdrag on friction and endbearing pile groups was investigated, based on a numerical analysis. The emphasis was on quantifying the reduction of downdrag on pile groups, with a flexible pile cap, due to group effect. The case of a single pile and, subsequently, the response of groups were analyzed by developing interaction factors obtained from a three-dimensional nonlinear finite element study. Based on a limited parametric study, it is shown that the downdrag on piles in a group is much less than the downdrag on a single pile and is highly influenced by the group spacing, total number of piles, and the relative position of the piles in a group. In light of all these influencing parameters, a simple method is recommended for square groups of 9-25 piles with spacing-to-diameter ratios of 2.5 and 5.0 for downdrag loads.",
author = "Sangseom Jeong and Sooil Kim and Briaud, {Jean Louis}",
year = "1997",
month = "12",
day = "1",
language = "English",
volume = "21",
pages = "143--161",
journal = "Computers and Geotechnics",
issn = "0266-352X",
publisher = "Elsevier BV",
number = "2",

}

Analysis of Downdrag on Pile Groups by the Finite Element Method. / Jeong, Sangseom; Kim, Sooil; Briaud, Jean Louis.

In: Computers and Geotechnics, Vol. 21, No. 2, 01.12.1997, p. 143-161.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Analysis of Downdrag on Pile Groups by the Finite Element Method

AU - Jeong, Sangseom

AU - Kim, Sooil

AU - Briaud, Jean Louis

PY - 1997/12/1

Y1 - 1997/12/1

N2 - The downdrag on friction and endbearing pile groups was investigated, based on a numerical analysis. The emphasis was on quantifying the reduction of downdrag on pile groups, with a flexible pile cap, due to group effect. The case of a single pile and, subsequently, the response of groups were analyzed by developing interaction factors obtained from a three-dimensional nonlinear finite element study. Based on a limited parametric study, it is shown that the downdrag on piles in a group is much less than the downdrag on a single pile and is highly influenced by the group spacing, total number of piles, and the relative position of the piles in a group. In light of all these influencing parameters, a simple method is recommended for square groups of 9-25 piles with spacing-to-diameter ratios of 2.5 and 5.0 for downdrag loads.

AB - The downdrag on friction and endbearing pile groups was investigated, based on a numerical analysis. The emphasis was on quantifying the reduction of downdrag on pile groups, with a flexible pile cap, due to group effect. The case of a single pile and, subsequently, the response of groups were analyzed by developing interaction factors obtained from a three-dimensional nonlinear finite element study. Based on a limited parametric study, it is shown that the downdrag on piles in a group is much less than the downdrag on a single pile and is highly influenced by the group spacing, total number of piles, and the relative position of the piles in a group. In light of all these influencing parameters, a simple method is recommended for square groups of 9-25 piles with spacing-to-diameter ratios of 2.5 and 5.0 for downdrag loads.

UR - http://www.scopus.com/inward/record.url?scp=0030670894&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0030670894&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0030670894

VL - 21

SP - 143

EP - 161

JO - Computers and Geotechnics

JF - Computers and Geotechnics

SN - 0266-352X

IS - 2

ER -