Axial compressive bearing capacity of piles in oil-contaminated sandy soil using FCV

Amirhossein Mohammadi, Taghi Ebadi, Abolfazl Eslami, S.E.A.T.M. van der Zee

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Oil and its derivatives contaminate many soils and not only affect their chemical and biological properties but also their geotechnical properties. As oil contamination may deteriorate the functioning of piles, this paper addresses the effects of oil contamination on soil–pile interactions. Axial compressive bearing capacities of two close-ended, instrumented piles were investigated in different oil-contaminated sand using frustum confining vessel. Three different oils (gasoil, crude oil, and used motor oil) at different contamination levels were considered and using some strain gauges, the toe, shaft, and the net total bearing capacity of piles, as well as load distributions along the pile length, were derived. The results show that the presence of oil between soil particles has considerable adverse effects on bearing capacities of model piles, especially the shaft bearing capacity. The oil viscosity and percentage, as well as the contaminated sand bed thickness around the piles, are the most influential parameters. The higher the oil viscosity and oil content, the lower the values of the piles’ bearing capacities in comparison to the uncontaminated sand. With some modifications on the bearing capacity parameters of CFEM method, a good agreement was observed between measured and calculated bearing capacity values.
LanguageEnglish
Pages164-179
JournalMarine Georesources & Geotechnology
Volume37
Issue number2
Early online date5 Jan 2018
DOIs
Publication statusPublished - 2019

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Bearing capacity
bearing capacity
sandy soil
Piles
pile
Soils
oil
Contamination
shaft
sand
Sand
viscosity
Viscosity
Oils
Oil sands
soil
Strain gages
geotechnical property
Loads (forces)
crude oil

Cite this

Mohammadi, Amirhossein ; Ebadi, Taghi ; Eslami, Abolfazl ; van der Zee, S.E.A.T.M. / Axial compressive bearing capacity of piles in oil-contaminated sandy soil using FCV. In: Marine Georesources & Geotechnology. 2019 ; Vol. 37, No. 2. pp. 164-179.
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title = "Axial compressive bearing capacity of piles in oil-contaminated sandy soil using FCV",
abstract = "Oil and its derivatives contaminate many soils and not only affect their chemical and biological properties but also their geotechnical properties. As oil contamination may deteriorate the functioning of piles, this paper addresses the effects of oil contamination on soil–pile interactions. Axial compressive bearing capacities of two close-ended, instrumented piles were investigated in different oil-contaminated sand using frustum confining vessel. Three different oils (gasoil, crude oil, and used motor oil) at different contamination levels were considered and using some strain gauges, the toe, shaft, and the net total bearing capacity of piles, as well as load distributions along the pile length, were derived. The results show that the presence of oil between soil particles has considerable adverse effects on bearing capacities of model piles, especially the shaft bearing capacity. The oil viscosity and percentage, as well as the contaminated sand bed thickness around the piles, are the most influential parameters. The higher the oil viscosity and oil content, the lower the values of the piles’ bearing capacities in comparison to the uncontaminated sand. With some modifications on the bearing capacity parameters of CFEM method, a good agreement was observed between measured and calculated bearing capacity values.",
author = "Amirhossein Mohammadi and Taghi Ebadi and Abolfazl Eslami and {van der Zee}, S.E.A.T.M.",
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Axial compressive bearing capacity of piles in oil-contaminated sandy soil using FCV. / Mohammadi, Amirhossein; Ebadi, Taghi; Eslami, Abolfazl; van der Zee, S.E.A.T.M.

In: Marine Georesources & Geotechnology, Vol. 37, No. 2, 2019, p. 164-179.

Research output: Contribution to journalArticleAcademicpeer-review

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PY - 2019

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N2 - Oil and its derivatives contaminate many soils and not only affect their chemical and biological properties but also their geotechnical properties. As oil contamination may deteriorate the functioning of piles, this paper addresses the effects of oil contamination on soil–pile interactions. Axial compressive bearing capacities of two close-ended, instrumented piles were investigated in different oil-contaminated sand using frustum confining vessel. Three different oils (gasoil, crude oil, and used motor oil) at different contamination levels were considered and using some strain gauges, the toe, shaft, and the net total bearing capacity of piles, as well as load distributions along the pile length, were derived. The results show that the presence of oil between soil particles has considerable adverse effects on bearing capacities of model piles, especially the shaft bearing capacity. The oil viscosity and percentage, as well as the contaminated sand bed thickness around the piles, are the most influential parameters. The higher the oil viscosity and oil content, the lower the values of the piles’ bearing capacities in comparison to the uncontaminated sand. With some modifications on the bearing capacity parameters of CFEM method, a good agreement was observed between measured and calculated bearing capacity values.

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