Response of Single Piles in Marine Deposits to Negative Skin Friction from Long-term Field Monitoring

Sang Seom Jeong, Junyoung Ko, Cheolju Lee, Junghwan Kim

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The behavior of single piles subjected to negative skin friction in soft soil was conducted by analyzing the results from full-scale long-term field measurements and three-dimensional (3D) numerical analyses. A skin friction coefficient (α and β coefficients) of the instrumented piles is back-calculated at different degrees of consolidation (U) of soft marine clay. Back-calculated β-values ranged from 0.15 to 0.35 for clay, and from 0.30 to 0.55 for sand, respectively. In addition, back-calculated α-values ranged from 0.1 to 0.3 for coated pile, and from 0.2 to 0.8 for uncoated pile when undrained shear strength of the soft clay was about 30-60 kPa, respectively. Moreover, this study describes behavior of a pile based on full-coupled 3D finite element (FE) analysis. The appropriate parametric studies needed for verifying the pile-soil interaction with consolidation are presented in this paper. Compared to the results from the measurements, it is shown that the computed results are capable of predicting the pile-soil behavior under consolidation. The major parameters that influence the pile behavior are discussed for different soil-pile conditions.

Original languageEnglish
Pages (from-to)239-263
Number of pages25
JournalMarine Georesources and Geotechnology
Volume32
Issue number3
DOIs
Publication statusPublished - 2014 Jan 1

Fingerprint

Skin friction
Piles
skin
pile
friction
Deposits
Monitoring
monitoring
Consolidation
Soils
consolidation
Clay
clay
soil
soft clay
soft soil
Shear strength
shear strength
Sand
Finite element method

All Science Journal Classification (ASJC) codes

  • Oceanography
  • Geotechnical Engineering and Engineering Geology
  • Ocean Engineering

Cite this

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title = "Response of Single Piles in Marine Deposits to Negative Skin Friction from Long-term Field Monitoring",
abstract = "The behavior of single piles subjected to negative skin friction in soft soil was conducted by analyzing the results from full-scale long-term field measurements and three-dimensional (3D) numerical analyses. A skin friction coefficient (α and β coefficients) of the instrumented piles is back-calculated at different degrees of consolidation (U) of soft marine clay. Back-calculated β-values ranged from 0.15 to 0.35 for clay, and from 0.30 to 0.55 for sand, respectively. In addition, back-calculated α-values ranged from 0.1 to 0.3 for coated pile, and from 0.2 to 0.8 for uncoated pile when undrained shear strength of the soft clay was about 30-60 kPa, respectively. Moreover, this study describes behavior of a pile based on full-coupled 3D finite element (FE) analysis. The appropriate parametric studies needed for verifying the pile-soil interaction with consolidation are presented in this paper. Compared to the results from the measurements, it is shown that the computed results are capable of predicting the pile-soil behavior under consolidation. The major parameters that influence the pile behavior are discussed for different soil-pile conditions.",
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Response of Single Piles in Marine Deposits to Negative Skin Friction from Long-term Field Monitoring. / Jeong, Sang Seom; Ko, Junyoung; Lee, Cheolju; Kim, Junghwan.

In: Marine Georesources and Geotechnology, Vol. 32, No. 3, 01.01.2014, p. 239-263.

Research output: Contribution to journalArticle

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