Experimental Testing and Analytical Modeling of Strip Footing in Reinforced Sandy Soil with Multi-Geogrid Layers Under Different Loading Conditions

Aram Mohammed Raheem; Mohammed Abdulsalam Abdulkarem

doi:doi:10.11648/j.ajce.20160401.11

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Experimental Testing and Analytical Modeling of Strip Footing in Reinforced Sandy Soil with Multi-Geogrid Layers Under Different Loading Conditions

Aram Mohammed Raheem, Mohammed Abdulsalam Abdulkarem

Published in American Journal of Civil Engineering (Volume 4, Issue 1)

Received: 20 January 2016 Accepted: 30 January 2016 Published: 19 February 2016

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Abstract

In this study, large-scale physical models with dimensions of (0.9m * 0.9m * 0.55m) have been designed and constructed to investigate the behavior of strip footing in reinforced sandy soil with multi-geogrid layers under inclined and eccentric loading conditions. The effect of several parameters such as geogrid layers (N), soil relative density (RD), depth of the topmost geogrid layer (U/B), load inclination angle () and load eccentricity ratio (e/B) on the bearing capacity ratio (BCR) of reinforced soil have been investigated through 120 experimental tests. As the number of the geogrid layers increased from 0 to 4, the BCR increased by 255% for 15o load inclination angle and by 470% for 0.05 load eccentricity ratio in 60% RD. When the RD of the soil increased from 60% to 80%, the average decreases in horizontal displacement and footing tilting angle were about 35% and 21% respectively. Hyperbolic analytical model was used to predict the relationships of most of the studied parameters. However, p-q analytical model was suggested to model the relationship between the BCR versus U/B. Both suggested models (hyperbolic and p-q) were in a very good agreement with the experimental results.

Published in	American Journal of Civil Engineering (Volume 4, Issue 1)
DOI	10.11648/j.ajce.20160401.11
Page(s)	1-11
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2016. Published by Science Publishing Group

Keywords

Strip Footing, Experimental Study, Sandy Soil, Geogrid, Analytical Models, Different Loading Condition

References

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APA Style

Aram Mohammed Raheem, Mohammed Abdulsalam Abdulkarem. (2016). Experimental Testing and Analytical Modeling of Strip Footing in Reinforced Sandy Soil with Multi-Geogrid Layers Under Different Loading Conditions. American Journal of Civil Engineering, 4(1), 1-11. https://doi.org/10.11648/j.ajce.20160401.11

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ACS Style

Aram Mohammed Raheem; Mohammed Abdulsalam Abdulkarem. Experimental Testing and Analytical Modeling of Strip Footing in Reinforced Sandy Soil with Multi-Geogrid Layers Under Different Loading Conditions. Am. J. Civ. Eng. 2016, 4(1), 1-11. doi: 10.11648/j.ajce.20160401.11

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AMA Style

Aram Mohammed Raheem, Mohammed Abdulsalam Abdulkarem. Experimental Testing and Analytical Modeling of Strip Footing in Reinforced Sandy Soil with Multi-Geogrid Layers Under Different Loading Conditions. Am J Civ Eng. 2016;4(1):1-11. doi: 10.11648/j.ajce.20160401.11

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@article{10.11648/j.ajce.20160401.11,
  author = {Aram Mohammed Raheem and Mohammed Abdulsalam Abdulkarem},
  title = {Experimental Testing and Analytical Modeling of Strip Footing in Reinforced Sandy Soil with Multi-Geogrid Layers Under Different Loading Conditions},
  journal = {American Journal of Civil Engineering},
  volume = {4},
  number = {1},
  pages = {1-11},
  doi = {10.11648/j.ajce.20160401.11},
  url = {https://doi.org/10.11648/j.ajce.20160401.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajce.20160401.11},
  abstract = {In this study, large-scale physical models with dimensions of (0.9m * 0.9m * 0.55m) have been designed and constructed to investigate the behavior of strip footing in reinforced sandy soil with multi-geogrid layers under inclined and eccentric loading conditions. The effect of several parameters such as geogrid layers (N), soil relative density (RD), depth of the topmost geogrid layer (U/B), load inclination angle () and load eccentricity ratio (e/B) on the bearing capacity ratio (BCR) of reinforced soil have been investigated through 120 experimental tests. As the number of the geogrid layers increased from 0 to 4, the BCR increased by 255% for 15o load inclination angle and by 470% for 0.05 load eccentricity ratio in 60% RD. When the RD of the soil increased from 60% to 80%, the average decreases in horizontal displacement and footing tilting angle were about 35% and 21% respectively. Hyperbolic analytical model was used to predict the relationships of most of the studied parameters. However, p-q analytical model was suggested to model the relationship between the BCR versus U/B. Both suggested models (hyperbolic and p-q) were in a very good agreement with the experimental results.},
 year = {2016}
}

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TY  - JOUR
T1  - Experimental Testing and Analytical Modeling of Strip Footing in Reinforced Sandy Soil with Multi-Geogrid Layers Under Different Loading Conditions
AU  - Aram Mohammed Raheem
AU  - Mohammed Abdulsalam Abdulkarem
Y1  - 2016/02/19
PY  - 2016
N1  - https://doi.org/10.11648/j.ajce.20160401.11
DO  - 10.11648/j.ajce.20160401.11
T2  - American Journal of Civil Engineering
JF  - American Journal of Civil Engineering
JO  - American Journal of Civil Engineering
SP  - 1
EP  - 11
PB  - Science Publishing Group
SN  - 2330-8737
UR  - https://doi.org/10.11648/j.ajce.20160401.11
AB  - In this study, large-scale physical models with dimensions of (0.9m * 0.9m * 0.55m) have been designed and constructed to investigate the behavior of strip footing in reinforced sandy soil with multi-geogrid layers under inclined and eccentric loading conditions. The effect of several parameters such as geogrid layers (N), soil relative density (RD), depth of the topmost geogrid layer (U/B), load inclination angle () and load eccentricity ratio (e/B) on the bearing capacity ratio (BCR) of reinforced soil have been investigated through 120 experimental tests. As the number of the geogrid layers increased from 0 to 4, the BCR increased by 255% for 15o load inclination angle and by 470% for 0.05 load eccentricity ratio in 60% RD. When the RD of the soil increased from 60% to 80%, the average decreases in horizontal displacement and footing tilting angle were about 35% and 21% respectively. Hyperbolic analytical model was used to predict the relationships of most of the studied parameters. However, p-q analytical model was suggested to model the relationship between the BCR versus U/B. Both suggested models (hyperbolic and p-q) were in a very good agreement with the experimental results.
VL  - 4
IS  - 1
ER  -

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Author Information

Aram Mohammed Raheem

Civil Engineering Department, University of Kirkuk, Kirkuk, Iraq
Mohammed Abdulsalam Abdulkarem

Geotechnical Engineer, Ministry of Construction and Housing, Kirkuk, Iraq

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APA Style

Aram Mohammed Raheem, Mohammed Abdulsalam Abdulkarem. (2016). Experimental Testing and Analytical Modeling of Strip Footing in Reinforced Sandy Soil with Multi-Geogrid Layers Under Different Loading Conditions. American Journal of Civil Engineering, 4(1), 1-11. https://doi.org/10.11648/j.ajce.20160401.11

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ACS Style

Aram Mohammed Raheem; Mohammed Abdulsalam Abdulkarem. Experimental Testing and Analytical Modeling of Strip Footing in Reinforced Sandy Soil with Multi-Geogrid Layers Under Different Loading Conditions. Am. J. Civ. Eng. 2016, 4(1), 1-11. doi: 10.11648/j.ajce.20160401.11

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AMA Style

Aram Mohammed Raheem, Mohammed Abdulsalam Abdulkarem. Experimental Testing and Analytical Modeling of Strip Footing in Reinforced Sandy Soil with Multi-Geogrid Layers Under Different Loading Conditions. Am J Civ Eng. 2016;4(1):1-11. doi: 10.11648/j.ajce.20160401.11

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@article{10.11648/j.ajce.20160401.11,
  author = {Aram Mohammed Raheem and Mohammed Abdulsalam Abdulkarem},
  title = {Experimental Testing and Analytical Modeling of Strip Footing in Reinforced Sandy Soil with Multi-Geogrid Layers Under Different Loading Conditions},
  journal = {American Journal of Civil Engineering},
  volume = {4},
  number = {1},
  pages = {1-11},
  doi = {10.11648/j.ajce.20160401.11},
  url = {https://doi.org/10.11648/j.ajce.20160401.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajce.20160401.11},
  abstract = {In this study, large-scale physical models with dimensions of (0.9m * 0.9m * 0.55m) have been designed and constructed to investigate the behavior of strip footing in reinforced sandy soil with multi-geogrid layers under inclined and eccentric loading conditions. The effect of several parameters such as geogrid layers (N), soil relative density (RD), depth of the topmost geogrid layer (U/B), load inclination angle () and load eccentricity ratio (e/B) on the bearing capacity ratio (BCR) of reinforced soil have been investigated through 120 experimental tests. As the number of the geogrid layers increased from 0 to 4, the BCR increased by 255% for 15o load inclination angle and by 470% for 0.05 load eccentricity ratio in 60% RD. When the RD of the soil increased from 60% to 80%, the average decreases in horizontal displacement and footing tilting angle were about 35% and 21% respectively. Hyperbolic analytical model was used to predict the relationships of most of the studied parameters. However, p-q analytical model was suggested to model the relationship between the BCR versus U/B. Both suggested models (hyperbolic and p-q) were in a very good agreement with the experimental results.},
 year = {2016}
}

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TY  - JOUR
T1  - Experimental Testing and Analytical Modeling of Strip Footing in Reinforced Sandy Soil with Multi-Geogrid Layers Under Different Loading Conditions
AU  - Aram Mohammed Raheem
AU  - Mohammed Abdulsalam Abdulkarem
Y1  - 2016/02/19
PY  - 2016
N1  - https://doi.org/10.11648/j.ajce.20160401.11
DO  - 10.11648/j.ajce.20160401.11
T2  - American Journal of Civil Engineering
JF  - American Journal of Civil Engineering
JO  - American Journal of Civil Engineering
SP  - 1
EP  - 11
PB  - Science Publishing Group
SN  - 2330-8737
UR  - https://doi.org/10.11648/j.ajce.20160401.11
AB  - In this study, large-scale physical models with dimensions of (0.9m * 0.9m * 0.55m) have been designed and constructed to investigate the behavior of strip footing in reinforced sandy soil with multi-geogrid layers under inclined and eccentric loading conditions. The effect of several parameters such as geogrid layers (N), soil relative density (RD), depth of the topmost geogrid layer (U/B), load inclination angle () and load eccentricity ratio (e/B) on the bearing capacity ratio (BCR) of reinforced soil have been investigated through 120 experimental tests. As the number of the geogrid layers increased from 0 to 4, the BCR increased by 255% for 15o load inclination angle and by 470% for 0.05 load eccentricity ratio in 60% RD. When the RD of the soil increased from 60% to 80%, the average decreases in horizontal displacement and footing tilting angle were about 35% and 21% respectively. Hyperbolic analytical model was used to predict the relationships of most of the studied parameters. However, p-q analytical model was suggested to model the relationship between the BCR versus U/B. Both suggested models (hyperbolic and p-q) were in a very good agreement with the experimental results.
VL  - 4
IS  - 1
ER  -

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