Effect of Stress Level on Behavior of Bored Piles Embedded in Medium Sandy Soil

In this paper investigation in the end bearing and shaft resistance of bored piles embedded in medium sand and subjected to axial load for wide rang of stress levels starting from laboratory dimensions and go toward field dimensions were made by utilizing the finite element method. The soil is model...

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Main Authors: Kais T. Shlash, Mohammad A. Al-Neam, Saif I. Akoobi
Format: Article
Language:English
Published: Unviversity of Technology- Iraq 2013-11-01
Series:Engineering and Technology Journal
Subjects:
Online Access:https://etj.uotechnology.edu.iq/article_83728_4dfe240dab876c5836cddc9531d04308.pdf
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author Kais T. Shlash
Mohammad A. Al-Neam
Saif I. Akoobi
author_facet Kais T. Shlash
Mohammad A. Al-Neam
Saif I. Akoobi
author_sort Kais T. Shlash
collection DOAJ
description In this paper investigation in the end bearing and shaft resistance of bored piles embedded in medium sand and subjected to axial load for wide rang of stress levels starting from laboratory dimensions and go toward field dimensions were made by utilizing the finite element method. The soil is modeled using hyperbolic soil model with empirical equation account for reduction of angle of internal friction Ø with increase in stress level while the bored pile assumed as a linear elastic material. It was found that the stress level has a significant effect on pile’s behavior and the small scale model in laboratory dimension not represent the real behavior of pile in field dimensions and if the results from such dimensions are adopted, it will lead to overestimate of bearing capacity factor Nq. Also, the effect of embedment ratio (L/D) on pile’s behavior is examined in this study and the results showed that the embedment ratio (L/D) increases the bearing capacity factor Nq up to a certain length beyond it the effect of embedment ratio (L/D) diminished.
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spelling doaj.art-9b9b2d747d164dd29f6b850e5471dff62024-02-04T17:36:58ZengUnviversity of Technology- IraqEngineering and Technology Journal1681-69002412-07582013-11-013119294310.30684/etj.31.19A.383728Effect of Stress Level on Behavior of Bored Piles Embedded in Medium Sandy SoilKais T. ShlashMohammad A. Al-NeamSaif I. AkoobiIn this paper investigation in the end bearing and shaft resistance of bored piles embedded in medium sand and subjected to axial load for wide rang of stress levels starting from laboratory dimensions and go toward field dimensions were made by utilizing the finite element method. The soil is modeled using hyperbolic soil model with empirical equation account for reduction of angle of internal friction Ø with increase in stress level while the bored pile assumed as a linear elastic material. It was found that the stress level has a significant effect on pile’s behavior and the small scale model in laboratory dimension not represent the real behavior of pile in field dimensions and if the results from such dimensions are adopted, it will lead to overestimate of bearing capacity factor Nq. Also, the effect of embedment ratio (L/D) on pile’s behavior is examined in this study and the results showed that the embedment ratio (L/D) increases the bearing capacity factor Nq up to a certain length beyond it the effect of embedment ratio (L/D) diminished.https://etj.uotechnology.edu.iq/article_83728_4dfe240dab876c5836cddc9531d04308.pdfbored pilestress levelfinite element methodbearing capacity factor nqand embedment ratio
spellingShingle Kais T. Shlash
Mohammad A. Al-Neam
Saif I. Akoobi
Effect of Stress Level on Behavior of Bored Piles Embedded in Medium Sandy Soil
Engineering and Technology Journal
bored pile
stress level
finite element method
bearing capacity factor nq
and embedment ratio
title Effect of Stress Level on Behavior of Bored Piles Embedded in Medium Sandy Soil
title_full Effect of Stress Level on Behavior of Bored Piles Embedded in Medium Sandy Soil
title_fullStr Effect of Stress Level on Behavior of Bored Piles Embedded in Medium Sandy Soil
title_full_unstemmed Effect of Stress Level on Behavior of Bored Piles Embedded in Medium Sandy Soil
title_short Effect of Stress Level on Behavior of Bored Piles Embedded in Medium Sandy Soil
title_sort effect of stress level on behavior of bored piles embedded in medium sandy soil
topic bored pile
stress level
finite element method
bearing capacity factor nq
and embedment ratio
url https://etj.uotechnology.edu.iq/article_83728_4dfe240dab876c5836cddc9531d04308.pdf
work_keys_str_mv AT kaistshlash effectofstresslevelonbehaviorofboredpilesembeddedinmediumsandysoil
AT mohammadaalneam effectofstresslevelonbehaviorofboredpilesembeddedinmediumsandysoil
AT saifiakoobi effectofstresslevelonbehaviorofboredpilesembeddedinmediumsandysoil