Inner skin friction of open-ended piles considering the degree of soil plugging

Sangseom Jeong, Junyoung Ko

Research output: Contribution to conferencePaper

Abstract

This paper presents an experimental study of the plugging effect on the capacity of open-ended piles installed in sandy soil. Full-scale tests, including dynamic and static axial-compression load tests, were carried out on three instrumented piles with different diameters (508.0, 711.2 and 914.4 mm). To measure the outer and inner shaft resistances acting on the piles, a double-walled system was utilized with instrumented strain gauges on the outside and inside walls of the pile. The results of field tests show that the inner shaft resistance was mostly mobilized at the location between the pile tip and 18-34% of the total plug length. It was found that the soil plugging in the lower portion has influence on the inner shaft resistance. In addition, a new design approach that can predict the degree of soil plugging and the inner skin friction is proposed. Based on the plugging measurements, a linear relationship between the PLR and incremental filling ratio (IFR) was proposed. Based on the results of the full-scale field pile load tests, the inner skin friction of the open-ended piles was proposed as a function of the IFR and pile diameter. The proposed method can predict the degree of soil plugging and the inner skin friction of open-ended piles and be selected as convenient option in engineering field.

Original languageEnglish
Pages1327-1332
Number of pages6
DOIs
Publication statusPublished - 2015 Jan 1
Event15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2015 - Fukuoka, Kyushu, Japan
Duration: 2015 Nov 92015 Nov 13

Other

Other15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2015
CountryJapan
CityFukuoka, Kyushu
Period15/11/915/11/13

Fingerprint

Skin friction
friction
Piles
skin
pile
Soils
soil
testing
shaft
gauges
sandy soils
engineering
Axial compression
Strain gages
sandy soil
gauge
experimental study
compression
test
methodology

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Soil Science

Cite this

Jeong, S., & Ko, J. (2015). Inner skin friction of open-ended piles considering the degree of soil plugging. 1327-1332. Paper presented at 15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2015, Fukuoka, Kyushu, Japan. https://doi.org/10.3208/jgssp.KOR-25
Jeong, Sangseom ; Ko, Junyoung. / Inner skin friction of open-ended piles considering the degree of soil plugging. Paper presented at 15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2015, Fukuoka, Kyushu, Japan.6 p.
@conference{1f42eac29c8f412182a0ad9ac36e1d8b,
title = "Inner skin friction of open-ended piles considering the degree of soil plugging",
abstract = "This paper presents an experimental study of the plugging effect on the capacity of open-ended piles installed in sandy soil. Full-scale tests, including dynamic and static axial-compression load tests, were carried out on three instrumented piles with different diameters (508.0, 711.2 and 914.4 mm). To measure the outer and inner shaft resistances acting on the piles, a double-walled system was utilized with instrumented strain gauges on the outside and inside walls of the pile. The results of field tests show that the inner shaft resistance was mostly mobilized at the location between the pile tip and 18-34{\%} of the total plug length. It was found that the soil plugging in the lower portion has influence on the inner shaft resistance. In addition, a new design approach that can predict the degree of soil plugging and the inner skin friction is proposed. Based on the plugging measurements, a linear relationship between the PLR and incremental filling ratio (IFR) was proposed. Based on the results of the full-scale field pile load tests, the inner skin friction of the open-ended piles was proposed as a function of the IFR and pile diameter. The proposed method can predict the degree of soil plugging and the inner skin friction of open-ended piles and be selected as convenient option in engineering field.",
author = "Sangseom Jeong and Junyoung Ko",
year = "2015",
month = "1",
day = "1",
doi = "10.3208/jgssp.KOR-25",
language = "English",
pages = "1327--1332",
note = "15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2015 ; Conference date: 09-11-2015 Through 13-11-2015",

}

Jeong, S & Ko, J 2015, 'Inner skin friction of open-ended piles considering the degree of soil plugging', Paper presented at 15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2015, Fukuoka, Kyushu, Japan, 15/11/9 - 15/11/13 pp. 1327-1332. https://doi.org/10.3208/jgssp.KOR-25

Inner skin friction of open-ended piles considering the degree of soil plugging. / Jeong, Sangseom; Ko, Junyoung.

2015. 1327-1332 Paper presented at 15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2015, Fukuoka, Kyushu, Japan.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Inner skin friction of open-ended piles considering the degree of soil plugging

AU - Jeong, Sangseom

AU - Ko, Junyoung

PY - 2015/1/1

Y1 - 2015/1/1

N2 - This paper presents an experimental study of the plugging effect on the capacity of open-ended piles installed in sandy soil. Full-scale tests, including dynamic and static axial-compression load tests, were carried out on three instrumented piles with different diameters (508.0, 711.2 and 914.4 mm). To measure the outer and inner shaft resistances acting on the piles, a double-walled system was utilized with instrumented strain gauges on the outside and inside walls of the pile. The results of field tests show that the inner shaft resistance was mostly mobilized at the location between the pile tip and 18-34% of the total plug length. It was found that the soil plugging in the lower portion has influence on the inner shaft resistance. In addition, a new design approach that can predict the degree of soil plugging and the inner skin friction is proposed. Based on the plugging measurements, a linear relationship between the PLR and incremental filling ratio (IFR) was proposed. Based on the results of the full-scale field pile load tests, the inner skin friction of the open-ended piles was proposed as a function of the IFR and pile diameter. The proposed method can predict the degree of soil plugging and the inner skin friction of open-ended piles and be selected as convenient option in engineering field.

AB - This paper presents an experimental study of the plugging effect on the capacity of open-ended piles installed in sandy soil. Full-scale tests, including dynamic and static axial-compression load tests, were carried out on three instrumented piles with different diameters (508.0, 711.2 and 914.4 mm). To measure the outer and inner shaft resistances acting on the piles, a double-walled system was utilized with instrumented strain gauges on the outside and inside walls of the pile. The results of field tests show that the inner shaft resistance was mostly mobilized at the location between the pile tip and 18-34% of the total plug length. It was found that the soil plugging in the lower portion has influence on the inner shaft resistance. In addition, a new design approach that can predict the degree of soil plugging and the inner skin friction is proposed. Based on the plugging measurements, a linear relationship between the PLR and incremental filling ratio (IFR) was proposed. Based on the results of the full-scale field pile load tests, the inner skin friction of the open-ended piles was proposed as a function of the IFR and pile diameter. The proposed method can predict the degree of soil plugging and the inner skin friction of open-ended piles and be selected as convenient option in engineering field.

UR - http://www.scopus.com/inward/record.url?scp=84971373105&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84971373105&partnerID=8YFLogxK

U2 - 10.3208/jgssp.KOR-25

DO - 10.3208/jgssp.KOR-25

M3 - Paper

AN - SCOPUS:84971373105

SP - 1327

EP - 1332

ER -

Jeong S, Ko J. Inner skin friction of open-ended piles considering the degree of soil plugging. 2015. Paper presented at 15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2015, Fukuoka, Kyushu, Japan. https://doi.org/10.3208/jgssp.KOR-25