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Numerical analysis of shallow foundations with varying loading and soil conditions

The load-deformation relationship under the footing is essential for foundation design. Shallow foundations are subjected to changes in hydrological conditions such as rainfall and drought, affecting their saturation level and conditions. The actual load-settlement response for design and reconstruc...

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Main Authors:	Hakro, Muhammad Rehan, Kumar, Aneel, Ali, Mujahid, Habib, Agha Faisal, de Azevedo, Afonso R. G., Fediuk, Roman, Sabri, Mohanad Muayad Sabri, Salmi, Abdelatif, Awad, Youssef Ahmed
Format:	Article
Published:	MDPI 2022
Subjects:	TA Engineering (General). Civil engineering (General)
Online Access:	http://eprints.um.edu.my/42229/
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spelling	my.um.eprints.422292023-10-11T00:44:38Z http://eprints.um.edu.my/42229/ Numerical analysis of shallow foundations with varying loading and soil conditions Hakro, Muhammad Rehan Kumar, Aneel Ali, Mujahid Habib, Agha Faisal de Azevedo, Afonso R. G. Fediuk, Roman Sabri, Mohanad Muayad Sabri Salmi, Abdelatif Awad, Youssef Ahmed TA Engineering (General). Civil engineering (General) The load-deformation relationship under the footing is essential for foundation design. Shallow foundations are subjected to changes in hydrological conditions such as rainfall and drought, affecting their saturation level and conditions. The actual load-settlement response for design and reconstructions is determined experimentally, numerically, or utilizing both approaches. Ssettlement computation is performed through large-scale physical modeling or extensive laboratory testing. It is expensive, labor intensive, and time consuming. This study is carried out to determine the effect of different saturation degrees and loading conditions on settlement shallow foundations using numerical modeling in Plaxis 2D, Bentley Systems, Exton, Pennsylvania, US. Plastic was used for dry soil calculation, while fully coupled flow deformation was used for partially saturated soil. Pore pressure and deformation changes were computed in fully coupled deformation. The Mohr-Columb model was used in the simulation, and model parameters were calculated from experimental results. The study results show that the degree of saturation is more critical to soil settlement than loading conditions. When a 200 KPa load was applied at the center of the footing, settlement was recored as 28.81 mm, which was less than 42.96 mm in the case of the full-depth shale layer; therefore, settlement was reduced by 30% in the underlying limestone rock layer. Regarding settlement under various degrees of saturation (DOS), settlment is increased by an increased degree of saturation, which increases pore pressure and decreases the shear strength of the soil. Settlement was observed as 0.69 mm at 0% saturation, 1.93 mm at 40% saturation, 2.21 mm at 50% saturation, 2.77 mm at 70% saturation, and 2.84 mm at 90% saturation of soil. MDPI 2022-05 Article PeerReviewed Hakro, Muhammad Rehan and Kumar, Aneel and Ali, Mujahid and Habib, Agha Faisal and de Azevedo, Afonso R. G. and Fediuk, Roman and Sabri, Mohanad Muayad Sabri and Salmi, Abdelatif and Awad, Youssef Ahmed (2022) Numerical analysis of shallow foundations with varying loading and soil conditions. Buildings, 12 (5). ISSN 2075-5309, DOI https://doi.org/10.3390/buildings12050693 <https://doi.org/10.3390/buildings12050693>. 10.3390/buildings12050693
institution	Universiti Malaya
building	UM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaya
content_source	UM Research Repository
url_provider	http://eprints.um.edu.my/
topic	TA Engineering (General). Civil engineering (General)
spellingShingle	TA Engineering (General). Civil engineering (General) Hakro, Muhammad Rehan Kumar, Aneel Ali, Mujahid Habib, Agha Faisal de Azevedo, Afonso R. G. Fediuk, Roman Sabri, Mohanad Muayad Sabri Salmi, Abdelatif Awad, Youssef Ahmed Numerical analysis of shallow foundations with varying loading and soil conditions
description	The load-deformation relationship under the footing is essential for foundation design. Shallow foundations are subjected to changes in hydrological conditions such as rainfall and drought, affecting their saturation level and conditions. The actual load-settlement response for design and reconstructions is determined experimentally, numerically, or utilizing both approaches. Ssettlement computation is performed through large-scale physical modeling or extensive laboratory testing. It is expensive, labor intensive, and time consuming. This study is carried out to determine the effect of different saturation degrees and loading conditions on settlement shallow foundations using numerical modeling in Plaxis 2D, Bentley Systems, Exton, Pennsylvania, US. Plastic was used for dry soil calculation, while fully coupled flow deformation was used for partially saturated soil. Pore pressure and deformation changes were computed in fully coupled deformation. The Mohr-Columb model was used in the simulation, and model parameters were calculated from experimental results. The study results show that the degree of saturation is more critical to soil settlement than loading conditions. When a 200 KPa load was applied at the center of the footing, settlement was recored as 28.81 mm, which was less than 42.96 mm in the case of the full-depth shale layer; therefore, settlement was reduced by 30% in the underlying limestone rock layer. Regarding settlement under various degrees of saturation (DOS), settlment is increased by an increased degree of saturation, which increases pore pressure and decreases the shear strength of the soil. Settlement was observed as 0.69 mm at 0% saturation, 1.93 mm at 40% saturation, 2.21 mm at 50% saturation, 2.77 mm at 70% saturation, and 2.84 mm at 90% saturation of soil.
format	Article
author	Hakro, Muhammad Rehan Kumar, Aneel Ali, Mujahid Habib, Agha Faisal de Azevedo, Afonso R. G. Fediuk, Roman Sabri, Mohanad Muayad Sabri Salmi, Abdelatif Awad, Youssef Ahmed
author_facet	Hakro, Muhammad Rehan Kumar, Aneel Ali, Mujahid Habib, Agha Faisal de Azevedo, Afonso R. G. Fediuk, Roman Sabri, Mohanad Muayad Sabri Salmi, Abdelatif Awad, Youssef Ahmed
author_sort	Hakro, Muhammad Rehan
title	Numerical analysis of shallow foundations with varying loading and soil conditions
title_short	Numerical analysis of shallow foundations with varying loading and soil conditions
title_full	Numerical analysis of shallow foundations with varying loading and soil conditions
title_fullStr	Numerical analysis of shallow foundations with varying loading and soil conditions
title_full_unstemmed	Numerical analysis of shallow foundations with varying loading and soil conditions
title_sort	numerical analysis of shallow foundations with varying loading and soil conditions
publisher	MDPI
publishDate	2022
url	http://eprints.um.edu.my/42229/
_version_	1781704613033934848
score	13.244745

Numerical analysis of shallow foundations with varying loading and soil conditions

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