Impact of eccentricity and depth-to-breadth ratio on the behavior of skirt foundation rested on dry gypseous soil

Gypseous soils are considered one of the most problematic soils. The skirted foundation is an alternative technology that works to improve the bearing capacity and reduce settlement. This paper investigates the use of square skirted foundations resting on gypseous soil subjected to concentric and ec...

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Main Authors: Abd-Alhameed Hind Jamal, Albusoda Bushra Suhale
Format: Article
Language:English
Published: De Gruyter 2022-07-01
Series:Journal of the Mechanical Behavior of Materials
Subjects:
Online Access:https://doi.org/10.1515/jmbm-2022-0057
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author Abd-Alhameed Hind Jamal
Albusoda Bushra Suhale
author_facet Abd-Alhameed Hind Jamal
Albusoda Bushra Suhale
author_sort Abd-Alhameed Hind Jamal
collection DOAJ
description Gypseous soils are considered one of the most problematic soils. The skirted foundation is an alternative technology that works to improve the bearing capacity and reduce settlement. This paper investigates the use of square skirted foundations resting on gypseous soil subjected to concentric and eccentric vertical load with eccentricity values of 4, 8, and 17 mm in 16 experimental model tests. To obtain the results by using this type of foundation, a small-scale physical model was designed to obtain the load–settlement behavior of the square skirted foundation; the dimension of the square footing is 100 mm × 100 mm with 1 mm thickness, the skirt depth (D s) was 0.5, 1, and 1.5B (where B is the footing width). The footing rests on dry gypseous soil with a relative density of 33%. The tests show that the gypsum content of the soil is 59%. The result shows that the highest bearing capacity for the square shape footing with D s/B = 1.5 subjected to concentric load results in an improvement ratio of 190%. For the eccentric load, with D s/B = 1.5, the increase in bearing capacity is about 120% at e = 8 mm when compared with using a foundation without a skirt.
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spelling doaj.art-57d9a6a67a1b4c1abd9de99ac603682f2022-12-22T03:51:06ZengDe GruyterJournal of the Mechanical Behavior of Materials2191-02432022-07-0131154655310.1515/jmbm-2022-0057Impact of eccentricity and depth-to-breadth ratio on the behavior of skirt foundation rested on dry gypseous soilAbd-Alhameed Hind Jamal0Albusoda Bushra Suhale1Department of Civil Engineering, University of Baghdad, Baghdad, IraqDepartment of Civil Engineering, University of Baghdad, Baghdad, IraqGypseous soils are considered one of the most problematic soils. The skirted foundation is an alternative technology that works to improve the bearing capacity and reduce settlement. This paper investigates the use of square skirted foundations resting on gypseous soil subjected to concentric and eccentric vertical load with eccentricity values of 4, 8, and 17 mm in 16 experimental model tests. To obtain the results by using this type of foundation, a small-scale physical model was designed to obtain the load–settlement behavior of the square skirted foundation; the dimension of the square footing is 100 mm × 100 mm with 1 mm thickness, the skirt depth (D s) was 0.5, 1, and 1.5B (where B is the footing width). The footing rests on dry gypseous soil with a relative density of 33%. The tests show that the gypsum content of the soil is 59%. The result shows that the highest bearing capacity for the square shape footing with D s/B = 1.5 subjected to concentric load results in an improvement ratio of 190%. For the eccentric load, with D s/B = 1.5, the increase in bearing capacity is about 120% at e = 8 mm when compared with using a foundation without a skirt.https://doi.org/10.1515/jmbm-2022-0057square skirted foundationgypseous soil bearing capacitysettlement
spellingShingle Abd-Alhameed Hind Jamal
Albusoda Bushra Suhale
Impact of eccentricity and depth-to-breadth ratio on the behavior of skirt foundation rested on dry gypseous soil
Journal of the Mechanical Behavior of Materials
square skirted foundation
gypseous soil bearing capacity
settlement
title Impact of eccentricity and depth-to-breadth ratio on the behavior of skirt foundation rested on dry gypseous soil
title_full Impact of eccentricity and depth-to-breadth ratio on the behavior of skirt foundation rested on dry gypseous soil
title_fullStr Impact of eccentricity and depth-to-breadth ratio on the behavior of skirt foundation rested on dry gypseous soil
title_full_unstemmed Impact of eccentricity and depth-to-breadth ratio on the behavior of skirt foundation rested on dry gypseous soil
title_short Impact of eccentricity and depth-to-breadth ratio on the behavior of skirt foundation rested on dry gypseous soil
title_sort impact of eccentricity and depth to breadth ratio on the behavior of skirt foundation rested on dry gypseous soil
topic square skirted foundation
gypseous soil bearing capacity
settlement
url https://doi.org/10.1515/jmbm-2022-0057
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