INVESTIGATING OF THE BEHAVIOR OF PILE GROUPS UNDER THE EFFECT OF SUCTION POTENTIAL OF UNSATURATED EXPANSIVE SOIL

This research presents an experimental study and numerical modelling to investigate the load-carrying capacity of a group of piles embedded in unsaturated expansive soil. The experimental work consists of a model of group of piles tested under unsaturated condition. The matric suction of the soil i...

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Main Authors: Saad Faik Abbas Al-Wakel, Karim Hadi Ibrahim, Safa Kareem Alwan
Format: Article
Language:Arabic
Published: Mustansiriyah University/College of Engineering 2018-07-01
Series:Journal of Engineering and Sustainable Development
Subjects:
Online Access:https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/425
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author Saad Faik Abbas Al-Wakel
Karim Hadi Ibrahim
Safa Kareem Alwan
author_facet Saad Faik Abbas Al-Wakel
Karim Hadi Ibrahim
Safa Kareem Alwan
author_sort Saad Faik Abbas Al-Wakel
collection DOAJ
description This research presents an experimental study and numerical modelling to investigate the load-carrying capacity of a group of piles embedded in unsaturated expansive soil. The experimental work consists of a model of group of piles tested under unsaturated condition. The matric suction of the soil is measured by the Tensiometers to estimate the soil water characteristic curve (SWCC) by applying a fitting method. The experimental model is performed to validate the numerical modeling of the investigated problem using finite element method. A three-dimensional numerical modelling of a large-scale model is adopted to perform a parametric study on a group of piles in unsaturated expansive soil to investigate the effect of different parameters, such as depth of phreatic surface and initial degree of saturation on the load- carrying capacity. The results showed that a good agreement for the validation process. In addition, the load-carrying capacity increases when the depth of phreatic surface from the ground surface increases, also the decreasing in the initial degree of saturation of the soil lead to an increase in load-carrying capacity.
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spelling doaj.art-a4f1670bcb474e7bbf9ca624ce5cd1352022-12-22T04:38:14ZaraMustansiriyah University/College of EngineeringJournal of Engineering and Sustainable Development2520-09172520-09252018-07-01224INVESTIGATING OF THE BEHAVIOR OF PILE GROUPS UNDER THE EFFECT OF SUCTION POTENTIAL OF UNSATURATED EXPANSIVE SOILSaad Faik Abbas Al-Wakel0Karim Hadi Ibrahim1Safa Kareem Alwan 2Building and Construction Engineering Department, University of Technology, Baghdad, IraqBuilding and Construction Engineering Department, University of Technology, Baghdad, IraqBuilding and Construction Engineering Department, University of Technology, Baghdad, Iraq This research presents an experimental study and numerical modelling to investigate the load-carrying capacity of a group of piles embedded in unsaturated expansive soil. The experimental work consists of a model of group of piles tested under unsaturated condition. The matric suction of the soil is measured by the Tensiometers to estimate the soil water characteristic curve (SWCC) by applying a fitting method. The experimental model is performed to validate the numerical modeling of the investigated problem using finite element method. A three-dimensional numerical modelling of a large-scale model is adopted to perform a parametric study on a group of piles in unsaturated expansive soil to investigate the effect of different parameters, such as depth of phreatic surface and initial degree of saturation on the load- carrying capacity. The results showed that a good agreement for the validation process. In addition, the load-carrying capacity increases when the depth of phreatic surface from the ground surface increases, also the decreasing in the initial degree of saturation of the soil lead to an increase in load-carrying capacity. https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/425finite elementgroup of pilesunsaturated soilexpansive soil
spellingShingle Saad Faik Abbas Al-Wakel
Karim Hadi Ibrahim
Safa Kareem Alwan
INVESTIGATING OF THE BEHAVIOR OF PILE GROUPS UNDER THE EFFECT OF SUCTION POTENTIAL OF UNSATURATED EXPANSIVE SOIL
Journal of Engineering and Sustainable Development
finite element
group of piles
unsaturated soil
expansive soil
title INVESTIGATING OF THE BEHAVIOR OF PILE GROUPS UNDER THE EFFECT OF SUCTION POTENTIAL OF UNSATURATED EXPANSIVE SOIL
title_full INVESTIGATING OF THE BEHAVIOR OF PILE GROUPS UNDER THE EFFECT OF SUCTION POTENTIAL OF UNSATURATED EXPANSIVE SOIL
title_fullStr INVESTIGATING OF THE BEHAVIOR OF PILE GROUPS UNDER THE EFFECT OF SUCTION POTENTIAL OF UNSATURATED EXPANSIVE SOIL
title_full_unstemmed INVESTIGATING OF THE BEHAVIOR OF PILE GROUPS UNDER THE EFFECT OF SUCTION POTENTIAL OF UNSATURATED EXPANSIVE SOIL
title_short INVESTIGATING OF THE BEHAVIOR OF PILE GROUPS UNDER THE EFFECT OF SUCTION POTENTIAL OF UNSATURATED EXPANSIVE SOIL
title_sort investigating of the behavior of pile groups under the effect of suction potential of unsaturated expansive soil
topic finite element
group of piles
unsaturated soil
expansive soil
url https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/425
work_keys_str_mv AT saadfaikabbasalwakel investigatingofthebehaviorofpilegroupsundertheeffectofsuctionpotentialofunsaturatedexpansivesoil
AT karimhadiibrahim investigatingofthebehaviorofpilegroupsundertheeffectofsuctionpotentialofunsaturatedexpansivesoil
AT safakareemalwan investigatingofthebehaviorofpilegroupsundertheeffectofsuctionpotentialofunsaturatedexpansivesoil